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WO2005031213A1 - Pilot safety shut off device for gas - Google Patents

Pilot safety shut off device for gas Download PDF

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Publication number
WO2005031213A1
WO2005031213A1 PCT/JP2004/014223 JP2004014223W WO2005031213A1 WO 2005031213 A1 WO2005031213 A1 WO 2005031213A1 JP 2004014223 W JP2004014223 W JP 2004014223W WO 2005031213 A1 WO2005031213 A1 WO 2005031213A1
Authority
WO
WIPO (PCT)
Prior art keywords
male terminal
terminal
cylindrical
cylindrical male
safety device
Prior art date
Application number
PCT/JP2004/014223
Other languages
French (fr)
Japanese (ja)
Inventor
Hirokazu Sato
Isao Kobayashi
Nobuyuki Fujiwara
Original Assignee
Mikuni Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mikuni Corporation filed Critical Mikuni Corporation
Priority to EP04788290.7A priority Critical patent/EP1669673B1/en
Priority to BRPI0414923-8A priority patent/BRPI0414923A/en
Priority to JP2005514245A priority patent/JP4198156B2/en
Publication of WO2005031213A1 publication Critical patent/WO2005031213A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/24Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/107Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23QIGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00Pilot flame igniters
    • F23Q9/08Pilot flame igniters with interlock with main fuel supply
    • F23Q9/12Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66Connections with the terrestrial mass, e.g. earth plate, earth pin
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00Special features of, or arrangements for controlling combustion
    • F23N2900/05101Connections between thermocouple and magnetic valves, e.g. by plug and socket connectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/643Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for rigid cylindrical bodies

Definitions

  • the present invention relates to a gas extinguishing safety device applied to a gas stove, a gas heater, or the like, and particularly relates to a thermocouple unit and an electromagnetic valve tut operated by a current generated by the thermoelectromotive force.
  • a gas extinguishing safety device connected to the
  • a main parner 2 disposed at an upper end of a gas supply pipe 1 and an auxiliary supply pipe 3 branched from the gas supply pipe 1 are disposed at a tip end.
  • Valve 4 that opens and closes the passage of the gas supply pipe 1, an electromagnetic valve cut 6, and a thermocouple unit 7 having cables 7 a ′ and 7 connected to the electromagnetic valve unit 6.
  • the operating shaft 9 is pushed to introduce gas into the gas supply pipe 1 and the auxiliary supply pipe 3, and when the main parner 2 is ignited by the flame of the ignition parner 4, the main The flame of the amplifier 2 heats the tip (thermosensitive part) of the thermocouple unit 7. Then, a thermoelectromotive force is generated in the thermocouple unit 7, and the current generated by the thermoelectromotive force flows through the coil of the solenoid valve unit 6 to generate an electromagnetic force. Keep the passage open.
  • thermocouple unit 7 stops, the thermoelectromotive force, that is, the electromagnetic force disappears, and the valve body 5 is returned by the return panel 10. Returned to close gas passage. As a result, the emission of unburned gas can be prevented.
  • the solenoid valve unit 6 and the thermocouple unit 7 are connected to two male terminals 6a and 6b provided on the solenoid valve unit 6 side as shown in Figs. 14 (a) and 14 (b).
  • the two female terminals 7a and 7b provided on the thermocouple unit 7 side are connected to each other so as to be electrically connected. That is, two pairs of male terminals 6a and 6b and female terminals 7a and 7b having substantially the same shape are arranged in parallel with each other and are detachably connected to each other.
  • thermocouple units 7 are provided as cables 7a7 connected to the female terminals 7a and 7b, respectively, and as thermosensitive portions provided at the ends of the cables 7a7.
  • the rod-shaped conductor 7a ⁇ , the cylindrical conductor 7b ⁇ which is arranged around the rod-shaped conductor 7a ⁇ and whose tip is formed in a conical shape with a tapered end and which is joined to the rod-shaped conductor 7a ⁇ , and the outer diameter ⁇ D of which At the tip where the rod-shaped conductor 7a ⁇ and the cylindrical conductor 7b ⁇ are joined to have a hot junction P1 and a cold junction P2, P3 at a predetermined distance from the hot junction P1. Formed!
  • Patent Document 1 JP-A-2000-18591
  • Patent Document 2 JP-A-8-178296
  • thermocouple unit 7 is required to have high electromotive force, high responsiveness, and the like so that the disappearance of gas can be detected with high accuracy. In order to achieve the above, it is necessary to satisfy these performances without increasing the size of the heat-sensitive sections (7a to 7b ", 7 to), causing a high cost, and the like.
  • the present invention has been made in view of the circumstances of the above-described conventional apparatus, and an object thereof is to reduce the size of the apparatus, reduce the cost, facilitate the assembly work, and the like.
  • An object of the present invention is to provide a gas extinguishing safety device capable of improving performance reliability.
  • the gas extinguishing safety device of the present invention includes a thermocouple unit having two terminals connected to a thermosensitive part, and a thermocouple unit connected to an exciting coil and provided in the thermocouple unit.
  • the two terminals that are individually connected to the two terminals and the coil are energized.
  • An electromagnetic valve unit provided with a valve element driven by an electromagnetic force generated by the electromagnetic valve unit, and either one of the two terminals provided in the thermocouple unit or the two terminals provided in the electromagnetic valve unit
  • One of the thermocouple unit is composed of a cylindrical male terminal including at least an arc-shaped portion of a cylinder, and one of an inner male terminal and an inner female terminal disposed inside the cylindrical male terminal.
  • An outer female terminal connected to at least one of the inner and outer walls of the cylindrical male terminal, the other of the two held terminals or the two terminals held by the solenoid valve unit;
  • the internal male terminal and the internal female terminal are arranged inside the cylindrical male terminal.
  • thermocouple unit and the solenoid valve unit when the thermocouple unit and the solenoid valve unit are integrally connected, the cylindrical male terminal provided on one of the thermocouple unit and the solenoid valve unit is connected to the thermocouple unit. Or the solenoid valve unit is connected to an external female terminal provided on the other side. Either the inner male terminal or the inner female terminal provided in the axial direction of the center axis position of the cylindrical male terminal, either the inner male terminal or the inner female terminal provided in a unit different from the unit equipped with the cylindrical male terminal Connected to either of the other.
  • connection (fitting) between the thermocouple unit and the solenoid valve cutout can be achieved by arranging the terminals in a direction parallel to the axial direction of the cylindrical male terminal, thereby achieving a narrower and smaller device.
  • the cylindrical male terminal can be connected to the outer female terminal at any position in the arc direction of the cylindrical male terminal, the angle of attachment between the thermocouple unit and the solenoid valve unit should be adjusted when connecting the thermocouple unit and the solenoid valve unit. The degree of freedom can be obtained.
  • the inner female terminal is composed of a pair of panel pieces that can clamp the inner male terminal, and the outer female terminal is a pair of springs that can clamp the wall surface of the cylindrical male terminal from inside and outside.
  • a one-piece configuration can be employed.
  • the pin-shaped male terminal is sandwiched by the inner female terminal that also has a panel force, and the cylindrical male terminal is also sandwiched by the outer female terminal made of a spring piece on the inside and outside of the wall surface. Therefore, electrical contact is reliably performed.
  • the inner female terminal and the outer female terminal are bent in a substantially V shape so as to have a flexible piece, and the cylindrical male terminal and the inner male terminal are formed of the flexible piece.
  • a configuration that can be inserted and removed in a direction substantially perpendicular to the radius direction can be adopted.
  • the male terminal (cylindrical male terminal and inner male terminal) and the female terminal (inner female terminal and Since the contact pressure with the outer and outer female terminals acts substantially uniformly in the insertion and removal directions, electrical contact can be reliably obtained in a stable state.
  • a configuration may be employed in which the cylindrical male terminal is formed to be longer than a terminal provided inside the cylindrical male terminal.
  • the pin-shaped male terminal when the solenoid valve unit and the thermocouple unit are separated from each other, the pin-shaped male terminal is in a state in which the pin-shaped male terminal enters the inside without protruding. Can be prevented.
  • the same outer female terminal and inner female terminal forming a pair of female terminals can be employed, and therefore, low cost siding can be achieved by using common components.
  • thermocouple unit or the solenoid valve unit when either the thermocouple unit or the solenoid valve unit is provided with an inner female terminal and an outer female terminal, the unit having the two female terminals holds the inner female terminal and holds the inner female terminal.
  • a fitting portion fitted inside the male terminal and a holding piece for holding the external female terminal in cooperation with the outer peripheral surface of the fitting portion and sandwiching the cylindrical male terminal from the outside. Can be used.
  • the fitting portion is fitted inside the cylindrical male terminal, and the pin-shaped male terminal is attached to the inner female terminal surrounded by the fitting portion.
  • the cylindrical male terminal is pinched in cooperation with the outer peripheral surface of the fitting portion by being connected, and the inner and outer surfaces of the cylindrical male terminal are connected to the outer female terminal, so that reliable electrical contact is obtained.
  • the configuration is adopted in which the cylindrical male terminal is formed to have substantially the same thickness, and the fitting portion is formed in a substantially columnar shape so as to fit the cylindrical male terminal. can do.
  • thermocouple unit having a cylindrical shape and the substantially cylindrical fitting portion (thermocouple unit) that fits the cylindrical male terminal are point-symmetrical about the axis. Will be fitted. Therefore, the thermocouple unit and the solenoid valve unit can be fitted to each other even if they have no directivity and are inclined in the direction of the angle V, and the assembly operation can be easily performed.
  • the cylindrical male terminal may have a folded portion whose leading edge is folded inward. And the fitting portion has a claw portion hooked on the folded portion.
  • the fitting portion has a deformable portion that can be elastically deformed in a direction substantially perpendicular to the fitting direction to the cylindrical male terminal, and the claw portion is formed at a tip of the deformed portion.
  • a configuration can be employed.
  • a configuration may be adopted in which the cylindrical male terminal integrally has a mounting flange for fixing the electromagnetic valve unit at a desired position.
  • the gas extinguishing safety device including the solenoid valve unit and the thermocouple unit can be fixed by fixing the cylindrical male terminal to a desired position as a mounting flange while grounding.
  • a configuration may be adopted in which the cylindrical male terminal integrally has a screw-in cap for fixing the electromagnetic valve unit at a desired position.
  • the gas extinguishing safety device including the solenoid valve unit and the thermocouple unit can be fixed by screwing the screw cap into a desired position while grounding the cylindrical male terminal.
  • the solenoid valve unit includes a movable iron core movable integrally with the valve body, and a fixed iron core on which a coil is wound, and the cylindrical male terminal integrally includes a holder for holding the fixed iron core.
  • the configuration having the following can be adopted.
  • the gas extinguishing safety device of the present invention provides a thermocouple unit having a thermosensitive portion at a tip thereof, and an electromagnetic valve driven by an electromagnetic force generated based on thermoelectromotive force generated by the thermocouple unit.
  • the cold junction at the rear end is formed thicker than the hot junction at the top joined to the rod-shaped conductor. ing.
  • the cold junction portion side of the cylindrical conductor is formed thick, so that even if the outer diameter is reduced as compared with the conventional case, the electromotive force characteristics and responsiveness are maintained as before, and the size is reduced.
  • the electromotive force characteristics and the responsiveness can be improved as compared with the related art.
  • a small-diameter tip portion having the smallest outer diameter is formed in a joining region at the distal end of the rod-shaped conductor and the cylindrical conductor, and the small-diameter tip portion extends from the hot junction to the cold junction.
  • a configuration can be employed that is formed to a length of about 30-50% of the distance. According to this configuration, the electromotive force characteristics and the responsiveness can be improved (high electromotive force and high responsiveness) by increasing the length of the small-diameter portion at the tip as compared with the related art.
  • the two terminals on the solenoid valve unit side and the two terminals on the thermocouple unit side are provided in the same axial direction. It is possible to consolidate, and to achieve narrower and smaller devices. Also, in one of the units provided with the cylindrical male terminal, by providing another terminal of one unit at the center axis position of the cylindrical male terminal, the external female terminal of the other unit is provided. Thus, the cylindrical male terminal can be fitted and connected at any angle about the center axis thereof, and when the thermocouple unit and the solenoid valve unit are connected, a degree of freedom can be obtained in the mounting angle of each other, and assembling is performed. Mounting work can be performed easily.
  • the cylindrical conductor which is cylindrically arranged around the rod-shaped conductor and whose tip is formed in a conical shape and which is joined to the rod-shaped conductor is joined to the rod-shaped conductor.
  • FIG. 1 shows one embodiment of a gas extinguishing safety device according to the present invention, wherein (a) is a front view of the device and (b) is a side view of the device.
  • FIG. 2 is a cross-sectional view of the device shown in FIG. 1, cut in a fitting direction (axial direction).
  • FIG. 3 is a cross-sectional view showing a state where a solenoid valve unit and a thermocouple unit constituting the device shown in FIG. 1 are separated.
  • FIG. 4 (a) is a cross-sectional view taken along line E1-E1 in FIG. 2
  • FIG. 4 (b) is a cross-sectional view taken along line E2-E2 in FIG.
  • FIG. 5 is a cross-sectional view showing a part of a first connector of the thermocouple unit.
  • FIG. 6 shows the relationship between the female terminal inside the thermocouple unit and the pin-shaped male terminal of the solenoid valve unit, (a) is a side view, (b) is a front view, and (c) is a part.
  • FIG. 6 (d) is an enlarged front view, and is a cross-sectional view taken along line E3-E3 in FIG. 6 (c).
  • FIG. 7 is a view showing a heat-sensitive portion of a thermocouple unit, where (a) is an external view and (b) is a cross-sectional view.
  • FIG. 8 shows another embodiment of the thermosensitive part of the thermocouple unit, where (a) is an external view and (b) is a cross-sectional view.
  • FIG. 9 is a cross-sectional view showing another embodiment of the gas extinguishing safety device according to the present invention.
  • FIG. 10 is a sectional view showing still another embodiment of the gas extinguishing safety device according to the present invention.
  • FIG. 11 is a perspective view showing another embodiment of the gas extinguishing safety device according to the present invention.
  • FIG. 12 is a sectional view of the gas extinguishing safety device shown in FIG. 11.
  • FIG. 13 is a system diagram showing a gas inlet port system to which a conventional gas extinguishing safety device is applied.
  • FIG. 14 shows a conventional gas extinguishing safety device, in which (a) is a cross-sectional view of the device and (b) is an end view of the device.
  • FIG. 15 is a view showing a heat-sensitive portion of a thermocouple unit forming a part of a conventional gas extinguishing safety device, (a) is an external view, and (b) is a cross-sectional view. Explanation of reference numerals
  • FIG. 1 is a front view and a side view showing the entire device
  • FIG. 2 is a cross-sectional view in the axial direction of the device
  • FIG. 3 is a cross-sectional view showing a state where the solenoid valve unit and the thermocouple unit are separated
  • FIG. 4 is a cross-sectional view in a direction perpendicular to the axis of the device
  • FIG. 5 is a cross-sectional view showing a part of the device
  • FIG. FIG. 7 is a partial view showing the structure of the terminal
  • FIG. 7 is a side view and a sectional view showing a heat-sensitive portion of the thermocouple unit.
  • this device has a solenoid valve unit 100 and a thermocouple unit 200 detachably connected to each other.
  • the solenoid valve unit 100 includes a fixed core 101, a fixed core 101. Resin bobbin 102 for holding the coil, fixed core 101 and exciting coil 103 wound integrally with bobbin 102, conductive holder 104 for fixing bobbin 102 by caulking, and one end 103a of coil 103.
  • a pin-shaped male terminal (inner male terminal) 105 that is connected to form one of a pair of male terminals, an insulating member 106 that holds the pin-shaped male terminal 105 at the center of the holder 104, and electrically insulates both from each other.
  • a cylindrical male terminal 107 which is the other of a pair of male terminals joined and formed of a conductive material, a resin case 108 covering the fixed iron core 101, and a shaft 109 slidably supported by the case 108.
  • a movable iron core 110 fixed to one end of the shaft 109, a rubber valve body 111 fixed to the other end of the shaft 109, a spring 112 for urging the valve body 111 outward, and the like.
  • the fixed iron core 101 is formed in a substantially U-shape from a magnetic material such as permalloy.
  • the bobbin 102 is formed in a substantially inverted U-shape using an insulating material (a non-conductive material) such as a resin material, and the bobbin 102 and the fixed core 101 are substantially H-shaped while holding the fixed core 101.
  • a coil 103 is wound around them in a vertical winding around them.
  • the holder 104 is formed of a conductive material such as brass, and the upper end piece is caulked to fix the bobbin 103, and the other end 103b of the coil 103 is electrically connected to the upper end by welding, pressure welding, or the like. It is connected to the.
  • the pin-shaped male terminal 105 is formed of a conductive material in a tapered cylindrical shape (needle shape) having a closed end. And, it is held at the center by the insulating member 106 without contact with the holder 104.
  • the cylindrical male terminal 107 is formed into a cylindrical shape by molding (deep drawing) a conductive material such as a metal plate having a predetermined thickness, and has a substantially diamond-shaped mounting flange 107a at the upper end. Further, the leading edge is folded inward to form a folded portion 107b.
  • the cylindrical male terminal 107 functions as a second connector fitted to the thermocouple unit 200 (a first connector 206 described later).
  • the relationship between the cylindrical male terminal 107 and the pin-shaped male terminal 105 is that, as shown in FIG. 3, the pin-shaped male terminal 105 is arranged at the center inside the cylindrical male terminal 107 and The male terminal 107 is formed so as to be longer than the male terminal 105 by the dimension L, that is, the male terminal 105 does not protrude from the male terminal 107. This prevents the pin-shaped male terminal 105 from coming into direct contact with other objects even if it is dropped or collides with other parts when handled only by the solenoid valve unit 100. Can be.
  • the wall thickness of the cylindrical male terminal 107 including the folded portion 107b and the outer diameter of the pin-shaped male terminal 105 are formed to have the same dimensions.
  • the same inner female terminal 204 and outer female terminal 205 described later can be employed.
  • the thermocouple unit 200 includes a thermosensitive portion 201 formed at the tip, a first cable 202 and a second cable 203, and a first cable 202 led from the thermosensitive portion 201.
  • An inner female terminal 204 connected to the end to form one of the pair of female terminals, an outer female terminal 205 connected to the end of the second cable 203 to form the other of the pair of female terminals, an inner female terminal 204 and
  • the first connector 206 that holds the outer female terminal 205, a seal member 207 that closes one end of the first connector 206, and the like are formed.
  • the cost can be reduced by using a common component.
  • the heat-sensitive portion 201 has a rod-shaped conductor 201a connected to the first cable 202, and is disposed in a cylindrical shape around the rod-shaped conductor 201a.
  • a rod-shaped conductor 201a connected to the first cable 202, and is disposed in a cylindrical shape around the rod-shaped conductor 201a.
  • the rod-shaped conductor 201a is formed in a solid shape from an alloy material of Ni, Cu, and Mn.
  • the cylindrical conductor 201b is made of an alloy material of Ni, Cr, and Fe, and has a conical tip and a cylindrical rear end, and has a cylindrical thickness greater than the thickness of the conical region. Is thicker.
  • the outer diameter of the cylindrical portion of the cylindrical conductor 201b is formed smaller than the conventional one shown in FIG.
  • the second cylindrical conductor 201c is formed in a cylindrical shape having an outer diameter of ⁇ , and has a smaller diameter D1 ( ⁇ ) than the conventional one shown in FIG.
  • the hot junction portion P1 is located at the distal end region where the rod-shaped conductor 201a and the cylindrical conductor 201b are joined, and a rear position separated by a predetermined distance from the hot junction portion P1. It has cold junctions P2 and P3.
  • the rear end of the cylindrical conductor 201b that is, the cold junction P2 is thicker than the hot junction P1. Even if the outer diameter of the cylindrical conductor is reduced by 20 lb compared to the conventional one, it is possible to achieve miniaturization and low cost while maintaining the electromotive force characteristics and responsiveness as before. Can be done.
  • a tip small-diameter portion having the smallest outer diameter ⁇ d is defined, and the length L1 of the tip small-diameter portion is defined as a hot junction portion.
  • the length is about 30-50% of the distance from P1 to the cold junction P2.
  • This dimension L1 is set longer than the dimension L of the conventional one shown in FIG. 15, and contributes to higher electromotive force and higher responsiveness.
  • the other heat-sensitive portion 20 ° includes a cylindrical conductor 201 having the same outer diameter as the conventional one shown in FIG.
  • the second cylindrical conductor 201 having the same outer diameter ⁇ D and the narrow portion at the front end having the same outer diameter ⁇ d and length L as the conventional one are adopted.
  • the contact portion P2 may be formed to be thicker than the hot junction portion P1. In this case, the electromotive force characteristics and the responsiveness can be further improved with the same size as the conventional one.
  • the inner female terminal 204 has a pin-shaped male terminal 105 which extends along its axis. It has a pair of non-pieces 204a, 204a formed so as to be sandwiched from both radially outer sides of the surface. As shown in FIG. 6 (d), each of the pair of non-pieces 204a and 204ai is bent into a substantially V-shape, and is opposed to each other to contact the outer peripheral surface of the pin-shaped male terminal 105 from both sides. It has a pair of flexible pieces 204a 204a ′ to be obtained.
  • the pin-shaped male terminal 105 is positioned in the radial direction of the pair of flexible pieces 204a 204a '(Fig. 4 (a),
  • the contact pressure between the pin-shaped male terminal 105 and the inner female terminal 204 acts substantially uniformly in the insertion and removal directions, it is possible to reliably obtain stable electrical contact therebetween. .
  • the outer female terminal 205 is formed in substantially the same shape as the inner female terminal 204, and as shown in Figs. 3 and 4, sandwiches the wall surface of the cylindrical male terminal 107 between the inner and outer forces. ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ 205 205.
  • the outer female terminal 205 may be such that the wall surface of the cylindrical male terminal 107 contacts only one of the inner side and the outer side.
  • tubular male terminal 107 a pair of oar viewed portion of the flexible pieces 205a 205 a '(FIGS. 4 (a), (horizontal b)) substantially perpendicular to the (FIGS. 4 (a) , (b) in a direction perpendicular to the plane of the paper), and can be freely inserted and removed!
  • the first connector 206 holds the inner female terminal 204 and is fitted to the inside of the cylindrical male terminal 107.
  • the outer periphery of the fitting portion 206 a The outer female terminal 205 is formed in cooperation with the surface, and is formed by a holding piece 206b and the like that sandwich the cylindrical male terminal 107 from the outside.
  • the fitting portion 206a is formed so that a part thereof is cut in the fitting direction and includes a deformable portion 206 ⁇ that can be elastically deformed in a direction perpendicular to the fitting direction. Then, at the tip of the deformed portion 206, as shown in FIG. 5, a claw portion 206a, 'which is hooked on the folded portion 107b of the cylindrical male terminal 107 is formed physically.
  • the fitting portion 206a when the fitting portion 206a is inserted into the cylindrical male terminal 107, if the deforming portion 206a is fitted to a predetermined position while being deformed inward, it returns elastically and is located at the tip thereof.
  • the claw portions 206a ⁇ are engaged with the folded portions 107b of the cylindrical male terminals 107. That is, while the fitting operation between the fitting portion 206a (the first connector 206) and the cylindrical male terminal (second connector) 107 can be easily performed, the fitting portion 206a suddenly moves from the cylindrical male terminal 107. It can surely prevent falling off.
  • the fitting portion 206a is formed in a substantially cylindrical shape so as to be integrated with the deformable portion 206 so as to fit the cylindrical male terminal 107 as the second connector having a cylindrical shape. That is, when the first connector 206 and the second connector (cylindrical male terminal) 107 are fitted, the fitting portion 206a is fitted inside the tubular male terminal 107, and the inside surrounded by the fitting portion 206a is fitted.
  • the pin-shaped male terminal 105 is fitted and connected to the terminal 204, and the holding piece 206b cooperates with the outer peripheral surface of the fitting portion 206a to sandwich the cylindrical male terminal 107, and the outer female terminal 205 is connected to the cylindrical male terminal 1
  • the cylindrical male terminal 107 is fitted and connected so that the inner and outer surfaces of 07 are in contact with each other, so that reliable electrical contact is obtained.
  • the cylindrical male terminal (second connector) 107 and the fitting portion 206a (first connector 206) are fitted point-symmetrically around the axis, so that the first connector 206 and the second connector 206
  • the connector (cylindrical male terminal) 107 has no directionality and can be fitted in any angle direction, so that the assembling work can be easily performed.
  • the pin-shaped male terminal 105 is positioned so as to face the inner female terminal 204 and both are positioned.
  • the fitting portion 206a (and the deformed portion 206) of the first connector 206 is inserted into the cylindrical male terminal (second connector) 107, the deformed portion 206 is deformed toward the center and the fitting is completed.
  • the claw portions 206a ⁇ are hooked on the folded portions 107b, and the solenoid valve unit 100 and the thermocouple unit 200 are securely connected.
  • the pin-shaped male terminal (inner male terminal) 105 enters the inner female terminal 204 and is sandwiched between the pair of spring pieces 204a, 204a. And, the outer peripheral surface enters the outer female terminal 205 and is held between the pair of spring pieces 205a, 205a.
  • the pair of male terminals (the pin-shaped male terminal 105 and the cylindrical male terminal 107) and the pair of female terminals (the inner female terminal 204 and the outer female terminal 205) are electrically reliably connected.
  • thermosensitive part 201 of the thermocouple unit 200 the operation when applied to the gas outlet system shown in FIG. 13 will be described.
  • the operating shaft 9 is pushed, and the gas supply pipe 1 and the auxiliary supply pipe 3 are pushed.
  • the gas is introduced into the furnace and the flame of the ignition parner 4 ignites the main parner 2.
  • the flame of the main parner 2 heats the thermosensitive part 201 of the thermocouple unit 200.
  • thermocouple unit 200 This heating generates a thermoelectromotive force in the thermocouple unit 200, and the current generated by the thermoelectromotive force flows through the coil 103 of the solenoid valve unit 100 via the first cable 202 and the second cable 203. Generates electromagnetic force. Then, the movable iron core 110 is attracted to the fixed iron core 101 by this electromagnetic force, and the valve body 111 is held in a state where the gas passage is opened. On the other hand, when the flame of the main parna 2 goes out due to blowout or boiling over, the thermocouple The heating of the knit 200 stops, the thermoelectromotive force, that is, the electromagnetic force disappears, and the valve body 111 is pushed back by the spring 112 to close the gas passage. As a result, the emission of unburned gas is prevented.
  • FIG. 9 shows another embodiment of the gas extinguishing safety device according to the present invention.
  • the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.
  • this device is a modification of the above-described embodiment with a part of the solenoid valve unit 10CT being changed.
  • a cylindrical male terminal 107 ' is adopted as a connector.
  • the cylindrical male terminal 107 has a holder 107 for holding the fixed iron core 101 and the bobbin 102 integrally formed, and has a claw portion 206a to a cylindrical shape inside the fitting portion 206a.
  • a step 107 for hooking the step is formed.
  • the cylindrical male terminal 107 ' also serves as a second connector connected to the first connector 206 of the thermocouple unit 200 and a holder for holding the fixed iron core 101, so that the number of parts is reduced accordingly. Is reduced, the structure is simplified, and the device is downsized.
  • FIG. 10 shows still another embodiment of the gas extinguishing safety device according to the present invention.
  • the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. You.
  • this device is obtained by changing a part of the solenoid valve units 100 to the above-described embodiment, and replacing the cylindrical male terminal 107 shown in FIG. 2 with a second connector. It employs a cylindrical male terminal 107 ".
  • screw-in caps 107a to be screwed to the gas supply pipes 1 and the like are formed in the cylindrical male terminals 107 to, and the inside of the cylindrical shape in which the fitting portion 206a is fitted is formed inside the cylindrical male terminal 107 to.
  • a step portion 107 ′ for hooking the claw portion 206 a ′ ′ is formed!
  • the cylindrical male terminal 107 also serves as the second connector connected to the first connector 206 of the thermocouple unit 200 and the screw-in cap 107a to be screwed into a thread portion such as a pipe. Therefore, by screwing the screw cap 107a, 'to the desired position (for example, gas supply pipe) while grounding the cylindrical male terminal 107,', the gas extinguishing safety device is fixed without using a separate fixing member. can do.
  • the cylindrical male terminals 107, 107 ′, 107 as the second connector are formed in a cylindrical shape, and the fitting portion 206a forming the first connector is formed in a substantially cylindrical shape.
  • the present invention is not limited to this. For example, a rectangular cylindrical male terminal other than a circular shape and a fitting portion may be employed. The size can be reduced, and the pair of male terminals and the pair of female terminals can be securely connected.
  • the force of the inner female terminal 204 and the outer female terminal 205 forming a pair of female terminals is represented by a pair of pieces 204a, 204a, 205a, 205a. It is not limited to this, but adopts a configuration with one or three or more spring pieces.
  • the unit 200 includes a pair of female terminals, an inner female terminal 204 and an outer female terminal 205, and the pin-shaped male terminal 105 and the inner female terminal 204 are fitted to each other to connect the cylindrical male terminal 107 and the outer female terminal 205.
  • the terminals provided in the solenoid valve unit 100 are not limited to two male terminals
  • the terminals provided in the thermocouple unit 200 are two female terminals.
  • Each of the solenoid valve unit 100 and the thermocouple unit 200 which is not limited to a terminal, has one male terminal and one female terminal.
  • One of the first units 300 includes a cylindrical male terminal 301, a pair of inner female terminals 302 made of a spring material provided inside the cylindrical male terminal 301, and an outer side of the inner female terminal 302. And a supporting member 303 to be positioned.
  • the support member 303 is made of an insulating material and is interposed between the cylindrical male terminal 301 and the inner female terminal 302. Assuming that the central axis of the cylinder of the cylindrical male terminal 301 is P, the pair of inner female terminals 302 are arranged at positions sandwiching the central axis P and extend in a direction parallel to the central axis P.
  • the support member 303 has a cylindrical shape centered on the central axis P of the cylindrical male terminal 301, and the cylindrical shape forms a slit 304 parallel to the central axis P. Note that the support member 303 does not necessarily need to have the slit 304 formed therein.
  • the tip of the inner female terminal 302 provided inside the cylindrical male terminal 301 is located outside the tip of the cylindrical male terminal 301. It shall not protrude.
  • the cylindrical male terminal 301 has a shape including a circular arc portion of a cylinder (a shape in which a part of the cylinder is cut out), but the cylindrical male terminal 301 has a cylindrical shape without a notch. May be. It should be noted that the cylindrical male terminal 107 shown in FIGS. 1 to 4, 4, 9 and 10 also has a shape including a circular arc portion of the cylinder (a shape in which a part of the cylinder is cut away) shown in FIG. good.
  • the second unit 400 includes a pin-shaped male terminal 401, a pair of outer female terminals 402 made of a spring material extending in parallel with the pin-shaped male terminal 401, and a support for supporting each outer female terminal 402. And a support member 403 which also serves as an insulating material.
  • the cylindrical male terminal 301 of the first unit 300 is formed. Is in contact with the female terminal 402 of the second unit 400 at any position in the arc shape (any position at an angle of 360 degrees in the cylindrical shape having no notch).
  • each of the first unit 300 and the second unit 400 has a male terminal and a female terminal, and both the first unit 300 and the second unit 400 necessarily have two terminals.
  • the male terminal force is not limited to having two female terminals.
  • the first unit 300 may be a solenoid valve cut 100 or a thermocouple cut 200
  • the second unit 400 may be a thermocouple unit 200 or a solenoid valve unit 100. Is also good. 1 to 4, the solenoid valve unit 100 has a pair of male terminals, and the thermocouple unit 200 has a pair of female terminals. On the contrary, the solenoid valve unit 100 has a pair of female terminals.
  • the thermocouple unit 200 may be provided with a pair of male terminals.
  • the cylinder of the first unit 300 is Any position of the circular arc of the male terminal 301 (any position of 360 degrees in a cylindrical shape without a notch) can be pinched and contacted by the female terminal 402 of the second unit 400.
  • the two terminals in the second unit 400 may be surrounded by a connector such as the second connector 206 shown in FIGS. Industrial applicability
  • the gas extinguishing safety device of the present invention achieves narrowing, miniaturization, simplification of the structure, cost reduction, and securing the freedom of the angles at the time of connection. Any system that shuts off the gas passage when the gas flame inside suddenly goes out can be applied to gas heaters and other gas appliances, not limited to gas inlets.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

It is intended to attain width reduction, size reduction, cost reduction, etc., for a pilot safety shut off device for gas. A pilot safety shut off device for gas comprises a thermocouple unit (200) having a pair of female terminals (204, 205) connected to a heat sensing section (201), and a first connector (206) holding the pair of female terminals, and an electromagnetic valve unit (100) having a pair of male terminals (105, 107) connected to an exciting coil (103), a valve disk (111) driven by electromagnetic force produced by feeding current to the coil, and a second connector (107) adapted to be fitted to the first connector so as to connect the pair of male terminals to the pair of female terminals. The pair of male terminals include a cylindrical male terminal (107) cylindrically formed to serve as a second connector, and a pin-like male terminal (105) disposed inside the cylindrical male terminal. The pair of female terminals include an inner female terminal (204) including a pair of spring pieces capable of holding the pin-like male terminal (105), and an outer female terminal (205) including a pair of spring pieces capable of holding the wall surface of the cylindrical male terminal (107). Thereby, width reduction and size reduction of the device can be attained.

Description

明 細 書  Specification
ガス立消え安全装置  Gas extinguishing safety device
技術分野  Technical field
[0001] 本発明は、ガスコンロあるいはガス湯沸し機等に適用されるガス立消え安全装置に 関し、特に、熱電対ユニットとその熱起電力により生じる電流で作動する電磁弁ュ- ットとを一体的に連結したガス立消え安全装置に関する。  The present invention relates to a gas extinguishing safety device applied to a gas stove, a gas heater, or the like, and particularly relates to a thermocouple unit and an electromagnetic valve tut operated by a current generated by the thermoelectromotive force. To a gas extinguishing safety device connected to the
背景技術  Background art
[0002] 従来のガスコン口のシステムとしては、例えば図 13に示すように、ガス供給管 1の上 端に配置されたメインパーナ 2、ガス供給管 1から分岐する補助供給管 3の先端に位 置する点火用パーナ 4、ガス供給管 1の通路を開閉する弁体 5を備える電磁弁ュ-ッ ト 6と電磁弁ユニット 6に連結されるケーブル 7a', 7 を有する熱電対ユニット 7とを 一体的に備えたガス立消え安全装置 8、操作軸 9等により形成されたものが知られて いる (例えば、特許文献 1、特許文献 2参照)。  [0002] As a conventional gas inlet system, for example, as shown in Fig. 13, a main parner 2 disposed at an upper end of a gas supply pipe 1 and an auxiliary supply pipe 3 branched from the gas supply pipe 1 are disposed at a tip end. Valve 4 that opens and closes the passage of the gas supply pipe 1, an electromagnetic valve cut 6, and a thermocouple unit 7 having cables 7 a ′ and 7 connected to the electromagnetic valve unit 6. A device formed by a gas extinguishment safety device 8, an operation shaft 9, and the like, which are provided, for example, is known (for example, see Patent Documents 1 and 2).
[0003] このガスコン口のシステムにお 、ては、操作軸 9を押して、ガス供給管 1及び補助供 給管 3内にガスを導き、点火パーナ 4の炎によりメインパーナ 2が着火すると、このメイ ンパーナ 2の炎は熱電対ユニット 7の先端 (感熱部)を加熱する。すると、熱電対ュニ ット 7に熱起電力が発生し、この熱起電力により生じた電流が電磁弁ユニット 6のコィ ルを流れて電磁力を生じ、弁体 5を吸引してガスの通路を開放した状態に保持する。 一方、吹き消え、煮こぼれ等によりメインパーナ 2の炎が立ち消えすると、熱電対ュ- ット 7の加熱が停止して熱起電力すなわち電磁力が消滅し、弁体 5は戻しパネ 10によ り戻されてガスの通路を閉鎖する。これにより、未燃ガスが放出されるのを防止できる ようになっている。  [0003] In this gas inlet system, the operating shaft 9 is pushed to introduce gas into the gas supply pipe 1 and the auxiliary supply pipe 3, and when the main parner 2 is ignited by the flame of the ignition parner 4, the main The flame of the amplifier 2 heats the tip (thermosensitive part) of the thermocouple unit 7. Then, a thermoelectromotive force is generated in the thermocouple unit 7, and the current generated by the thermoelectromotive force flows through the coil of the solenoid valve unit 6 to generate an electromagnetic force. Keep the passage open. On the other hand, when the flame of the main parner 2 extinguishes due to blowout, boiling over, etc., the heating of the thermocouple unit 7 stops, the thermoelectromotive force, that is, the electromagnetic force disappears, and the valve body 5 is returned by the return panel 10. Returned to close gas passage. As a result, the emission of unburned gas can be prevented.
[0004] ここで、電磁弁ユニット 6と熱電対ユニット 7とは、図 14 (a) , (b)に示すように、電磁 弁ユニット 6側に設けられた 2本の雄端子 6a, 6bと、熱電対ユニット 7側に設けられた 2本の雌端子 7a, 7bとをお互いに連結することにより、電気的に接続されるようになつ ている。すなわち、略同一形状をなす二対の雄端子 6a, 6b及び雌端子 7a, 7bをそ れぞれ平行に配置して着脱自在に連結するように形成されて ヽる。 [0005] さらに、これら熱電対ユニット 7は、図 13ないし図 15に示すように、雌端子 7a, 7bに それぞれ連結されたケーブル 7a 7 、ケーブル 7a 7 の先端に設けられた感 熱部としての棒状導体 7a~、棒状導体 7a~の周りに配置されると共に先端が先細り の円錐形状に形成されて棒状導体 7a~に接合された筒状導体 7b~及び外径 φ D をなす筒状導体 7 ~を有し、棒状導体 7a~と筒状導体 7b~とが接合された先端 に温接点部 P1及び温接点部 P1から所定の距離だけ隔てた位置に冷接点部 P2, P 3をもつように形成されて!、る。 [0004] Here, the solenoid valve unit 6 and the thermocouple unit 7 are connected to two male terminals 6a and 6b provided on the solenoid valve unit 6 side as shown in Figs. 14 (a) and 14 (b). The two female terminals 7a and 7b provided on the thermocouple unit 7 side are connected to each other so as to be electrically connected. That is, two pairs of male terminals 6a and 6b and female terminals 7a and 7b having substantially the same shape are arranged in parallel with each other and are detachably connected to each other. [0005] Further, as shown in Figs. 13 to 15, these thermocouple units 7 are provided as cables 7a7 connected to the female terminals 7a and 7b, respectively, and as thermosensitive portions provided at the ends of the cables 7a7. The rod-shaped conductor 7a ~, the cylindrical conductor 7b ~ which is arranged around the rod-shaped conductor 7a ~ and whose tip is formed in a conical shape with a tapered end and which is joined to the rod-shaped conductor 7a ~, and the outer diameter φD of which At the tip where the rod-shaped conductor 7a ~ and the cylindrical conductor 7b ~ are joined to have a hot junction P1 and a cold junction P2, P3 at a predetermined distance from the hot junction P1. Formed!
[0006] 特許文献 1 :特開 2000-18591号公報  Patent Document 1: JP-A-2000-18591
特許文献 2 :特開平 8- 178296号公報  Patent Document 2: JP-A-8-178296
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0007] ところで、上記従来の立消え安全装置においては、図 14 (a) , (b)に示すような端 子の接続構造の場合、略同一の形状をなす雄端子 6a, 6b及び雌端子 7a, 7bを並 列に配置して各々を嵌合させるため、端子間を絶縁しかつ保護するためのケースが 大型化し、装置の小型化を図るのが困難である。また、両者を嵌合して連結する場合 に、そのケースの向きが決まっているため、ケースの向きを予め確認しながら組付け る必要があり、組付け作業を容易に行なうことができな 、。  [0007] By the way, in the above conventional fall-off safety device, in the case of the terminal connection structure as shown in FIGS. 14 (a) and 14 (b), the male terminals 6a and 6b and the female terminals 7a having substantially the same shape. , 7b are arranged in parallel and fitted to each other, so that the size of the case for insulating and protecting the terminals becomes large, and it is difficult to reduce the size of the device. In addition, when the two are fitted and connected, the direction of the case is determined, so it is necessary to assemble while checking the direction of the case in advance, and the assembling work cannot be performed easily. .
[0008] さらに、熱電対ユニット 7には、ガスの立消えを高精度に検出できるように、高起電 力、高応答性等の性能が要求されるため、装置全体の小型化、低コストィ匕等を図る には、感熱部(7a~ , 7b" , 7 ~)の大型化、高コストィ匕等を招くことなぐこれらの 性能を満足させる必要がある。  Further, the thermocouple unit 7 is required to have high electromotive force, high responsiveness, and the like so that the disappearance of gas can be detected with high accuracy. In order to achieve the above, it is necessary to satisfy these performances without increasing the size of the heat-sensitive sections (7a to 7b ", 7 to), causing a high cost, and the like.
[0009] 本発明は、上記従来の装置の事情に鑑みて成されたものであり、その目的とすると ころは、装置の小型化、低コスト化、組付け作業の容易化等を図りつつ、性能上の信 頼性を向上させることのできるガス立消え安全装置を提供することにある。  [0009] The present invention has been made in view of the circumstances of the above-described conventional apparatus, and an object thereof is to reduce the size of the apparatus, reduce the cost, facilitate the assembly work, and the like. An object of the present invention is to provide a gas extinguishing safety device capable of improving performance reliability.
課題を解決するための手段  Means for solving the problem
[0010] 本発明のガス立消え安全装置は、感熱部に接続された 2個の端子を備えた熱電対 ユニットと、励磁用のコイルに接続されるものであって前記熱電対ユニットに備えられ た前記 2個の端子と個々に接続する 2個の端子並びに前記コイルへの通電により生 じる電磁力により駆動される弁体を備える電磁弁ユニットと、を備え、前記熱電対ュ- ットに備えられる 2個の端子または前記電磁弁ユニットに備えられる 2個の端子のい ずれか一方が、円筒のすくなくとも円弧状部分を含む筒状雄端子と、前記筒状雄端 子の内側に配置される内側雄端子または内側雌端子のいずれか一方とから成り、前 記熱電対ユニットに保持される 2個の端子または前記電磁弁ユニットに保持される 2 個の端子のいずれか他方が、前記筒状雄端子の壁面の内側と外側のすくなくとも一 方側と接続する外側雌端子と、前記筒状雄端子の内側に配置された前記内側雄端 子または前記内側雌端子のいずれか他方の端子とから成る、構成となっている。 [0010] The gas extinguishing safety device of the present invention includes a thermocouple unit having two terminals connected to a thermosensitive part, and a thermocouple unit connected to an exciting coil and provided in the thermocouple unit. The two terminals that are individually connected to the two terminals and the coil are energized. An electromagnetic valve unit provided with a valve element driven by an electromagnetic force generated by the electromagnetic valve unit, and either one of the two terminals provided in the thermocouple unit or the two terminals provided in the electromagnetic valve unit One of the thermocouple unit is composed of a cylindrical male terminal including at least an arc-shaped portion of a cylinder, and one of an inner male terminal and an inner female terminal disposed inside the cylindrical male terminal. An outer female terminal connected to at least one of the inner and outer walls of the cylindrical male terminal, the other of the two held terminals or the two terminals held by the solenoid valve unit; The internal male terminal and the internal female terminal are arranged inside the cylindrical male terminal.
[0011] この構成によれば、熱電対ユニットと電磁弁ユニットとを一体的に結合する際に、熱 電対ユニットか電磁弁ユニットのいずれか一方に設けられる筒状雄端子は、熱電対 ユニットか電磁弁ユニットのいずれカゝ他方に設けられる外側雌端子と接続される。筒 状雄端子の中心軸位置の軸方向に備えられる内側雄端子か内側雌端子の!/、ずれ か一方は、筒状雄端子を備えるユニットと異なるユニットに備えられる内側雄端子か 内側雌端子のいずれか他方と接続される。このように、熱電対ユニットと電磁弁ュ-ッ トとの接続 (嵌合)は筒状雄端子の軸方向に平行な方向に端子を配置でき、装置の 幅狭化、小型化を達成できる。また、筒状雄端子の円弧方向のどの位置においても 、筒状雄端子を外側雌端子と接続することができるので、熱電対ユニットと電磁弁ュ ニットとの接続の際に互いの取付け角度に自由度を得ることができる。 [0011] According to this configuration, when the thermocouple unit and the solenoid valve unit are integrally connected, the cylindrical male terminal provided on one of the thermocouple unit and the solenoid valve unit is connected to the thermocouple unit. Or the solenoid valve unit is connected to an external female terminal provided on the other side. Either the inner male terminal or the inner female terminal provided in the axial direction of the center axis position of the cylindrical male terminal, either the inner male terminal or the inner female terminal provided in a unit different from the unit equipped with the cylindrical male terminal Connected to either of the other. As described above, the connection (fitting) between the thermocouple unit and the solenoid valve cutout can be achieved by arranging the terminals in a direction parallel to the axial direction of the cylindrical male terminal, thereby achieving a narrower and smaller device. . Further, since the cylindrical male terminal can be connected to the outer female terminal at any position in the arc direction of the cylindrical male terminal, the angle of attachment between the thermocouple unit and the solenoid valve unit should be adjusted when connecting the thermocouple unit and the solenoid valve unit. The degree of freedom can be obtained.
[0012] 上記構成において、前記内側雌端子は前記内側雄端子を挟持し得る一対のパネ 片から成り、前記外側雌端子は前記筒状雄端子の壁面を内側及び外側から挟持し 得る一対のバネ片から成る、構成を採用することができる。  [0012] In the above configuration, the inner female terminal is composed of a pair of panel pieces that can clamp the inner male terminal, and the outer female terminal is a pair of springs that can clamp the wall surface of the cylindrical male terminal from inside and outside. A one-piece configuration can be employed.
この構成によれば、接続状態において、ピン状雄端子はパネ力もなる内側雌端子 により挟持され、又、筒状雄端子もバネ片からなる外側雌端子によりその壁面の内側 及び外側を挟持されるため、電気的な接触が確実に行なわれる。  According to this configuration, in the connection state, the pin-shaped male terminal is sandwiched by the inner female terminal that also has a panel force, and the cylindrical male terminal is also sandwiched by the outer female terminal made of a spring piece on the inside and outside of the wall surface. Therefore, electrical contact is reliably performed.
[0013] 上記構成において、前記内側雌端子及び前記外側雌端子は、可撓片をもつよう〖こ 略 V字状に折り曲げ、前記筒状雄端子及び前記内側雄端子は、前記可撓片の橈み 方向に略垂直な方向にぉ 、て挿脱可能とする、構成を採用することができる。  [0013] In the above configuration, the inner female terminal and the outer female terminal are bent in a substantially V shape so as to have a flexible piece, and the cylindrical male terminal and the inner male terminal are formed of the flexible piece. A configuration that can be inserted and removed in a direction substantially perpendicular to the radius direction can be adopted.
この構成によれば、雄端子 (筒状雄端子及び内側雄端子)と雌端子(内側雌端子及 び外側雌端子)との接触圧力が、挿入及び離脱方向において略均一に作用するた め、電気的な接触を安定した状態で確実に得ることができる。 According to this configuration, the male terminal (cylindrical male terminal and inner male terminal) and the female terminal (inner female terminal and Since the contact pressure with the outer and outer female terminals acts substantially uniformly in the insertion and removal directions, electrical contact can be reliably obtained in a stable state.
[0014] 上記構成において、前記筒状雄端子は、その筒状雄端子の内側に備えられる端 子よりも長く形成した、構成を採用することができる。  [0014] In the above configuration, a configuration may be employed in which the cylindrical male terminal is formed to be longer than a terminal provided inside the cylindrical male terminal.
この構成によれば、電磁弁ユニットと熱電対ユニットとを分離した状態において、ピ ン状雄端子は筒状雄端子力 突出せず内側に入り込んだ状態にあるため、ピン状雄 端子の折損等を防止できる。  According to this configuration, when the solenoid valve unit and the thermocouple unit are separated from each other, the pin-shaped male terminal is in a state in which the pin-shaped male terminal enters the inside without protruding. Can be prevented.
[0015] 上記構成において、筒状雄端子の肉厚とピン状雄端子の外径とは、同一寸法に形 成されている、構成を採用することができる。 [0015] In the above configuration, it is possible to adopt a configuration in which the thickness of the cylindrical male terminal and the outer diameter of the pin-shaped male terminal are formed to have the same dimensions.
この構成によれば、一対の雌端子をなす外側雌端子及び内側雌端子として同一の もの採用することができ、それ故に、部品の共通化による低コストィ匕を達成できる。  According to this configuration, the same outer female terminal and inner female terminal forming a pair of female terminals can be employed, and therefore, low cost siding can be achieved by using common components.
[0016] 上記構成において、熱電対ユニットか電磁弁ユニットのいずれか一方に内側雌端 子と外側雌端子とを備える場合に、その 2個の雌端子を備えるユニットが内側雌端子 を保持し筒状雄端子の内側に嵌合される嵌合部と、嵌合部の外周面と協働して外側 雌端子を保持すると共に筒状雄端子を外側から挟み込む挟持片とを含む、構成を採 用することができる。 [0016] In the above configuration, when either the thermocouple unit or the solenoid valve unit is provided with an inner female terminal and an outer female terminal, the unit having the two female terminals holds the inner female terminal and holds the inner female terminal. A fitting portion fitted inside the male terminal and a holding piece for holding the external female terminal in cooperation with the outer peripheral surface of the fitting portion and sandwiching the cylindrical male terminal from the outside. Can be used.
この構成によれば、熱電対ユニットと電磁弁ユニットとを接続すると、嵌合部が筒状 雄端子の内側に嵌合されて、嵌合部に包囲された内側雌端子にピン状雄端子が接 続され、挟持片が嵌合部の外周面と協働して筒状雄端子を挟み込み、外側雌端子 に筒状雄端子の内外面が接続されて、確実な電気的接触が得られる。  According to this configuration, when the thermocouple unit and the solenoid valve unit are connected, the fitting portion is fitted inside the cylindrical male terminal, and the pin-shaped male terminal is attached to the inner female terminal surrounded by the fitting portion. The cylindrical male terminal is pinched in cooperation with the outer peripheral surface of the fitting portion by being connected, and the inner and outer surfaces of the cylindrical male terminal are connected to the outer female terminal, so that reliable electrical contact is obtained.
[0017] 上記構成において、筒状雄端子は、略同一の肉厚に形成されており、嵌合部は、 筒状雄端子に適合するように略円柱状に形成されている、構成を採用することができ る。 In the above configuration, the configuration is adopted in which the cylindrical male terminal is formed to have substantially the same thickness, and the fitting portion is formed in a substantially columnar shape so as to fit the cylindrical male terminal. can do.
この構成によれば、円筒形状をなす筒状雄端子 (電磁弁ユニット)と筒状雄端子に 適合する略円柱形状をなす嵌合部 (熱電対ユニット)とは、軸線回りに点対称的に嵌 合されることになる。したがって、熱電対ユニットと電磁弁ユニットとは、方向性がなく V、ずれの角度方向にぉ 、ても嵌合でき、組付け作業を容易に行なうことができる。  According to this configuration, the cylindrical male terminal (solenoid valve unit) having a cylindrical shape and the substantially cylindrical fitting portion (thermocouple unit) that fits the cylindrical male terminal are point-symmetrical about the axis. Will be fitted. Therefore, the thermocouple unit and the solenoid valve unit can be fitted to each other even if they have no directivity and are inclined in the direction of the angle V, and the assembly operation can be easily performed.
[0018] 上記構成において、筒状雄端子は、その先端縁部が内側に折り返された折返し部 を有し、嵌合部は、折返し部に掛止される爪部を有する、構成を採用することができ る。 [0018] In the above configuration, the cylindrical male terminal may have a folded portion whose leading edge is folded inward. And the fitting portion has a claw portion hooked on the folded portion.
この構成によれば、嵌合部 (熱電対ユニット)が筒状雄端子 (電磁弁ユニット)に嵌 合されると、嵌合部の爪部が筒状雄端子の折返し部に掛止されて、嵌合部が筒状雄 端子力 抜け落ちるのを防止できる。  According to this configuration, when the fitting portion (thermocouple unit) is fitted to the cylindrical male terminal (solenoid valve unit), the claw portion of the fitting portion is engaged with the folded portion of the cylindrical male terminal. Also, it is possible to prevent the fitting portion from falling off the cylindrical male terminal force.
[0019] 上記構成において、嵌合部は筒状雄端子への嵌合方向に略垂直な方向に弾性変 形し得る変形部を有し、爪部は変形部の先端に形成されている、構成を採用すること ができる。  [0019] In the above configuration, the fitting portion has a deformable portion that can be elastically deformed in a direction substantially perpendicular to the fitting direction to the cylindrical male terminal, and the claw portion is formed at a tip of the deformed portion. A configuration can be employed.
この構成によれば、嵌合部を筒状雄端子に挿入する際に、変形部が内側に変形し つつ所定の位置まで嵌合されると、弾性復帰してその先端にある爪部が筒状雄端子 の折返し部に掛止される。すなわち、嵌合部 (熱電対ユニット)と筒状雄端子 (電磁弁 ユニット)との嵌合作業を容易に行なえると同時に、嵌合部が筒状雄端子から容易に 抜け落ちるのを防止することができる。  According to this configuration, when the fitting portion is inserted into the cylindrical male terminal, if the deformed portion is fitted to the predetermined position while deforming inward, the claw portion at the distal end thereof is elastically restored and the claw portion at the tip thereof is returned to the cylindrical shape. It is hooked on the folded part of the male terminal. That is, it is possible to easily perform the fitting operation between the fitting portion (thermocouple unit) and the cylindrical male terminal (solenoid valve unit), and at the same time, prevent the fitting portion from easily falling out of the cylindrical male terminal. Can be.
[0020] 上記構成において、筒状雄端子は、電磁弁ユニットを所望の位置に固定するため の取り付けフランジを一体的に有する、構成を採用することができる。 In the above configuration, a configuration may be adopted in which the cylindrical male terminal integrally has a mounting flange for fixing the electromagnetic valve unit at a desired position.
この構成によれば、筒状雄端子をアースしつつ取り付けフランジとして所望の位置 に固定することで、電磁弁ユニット及び熱電対ユニットからなるガス立消え安全装置 を固定することができる。  According to this configuration, the gas extinguishing safety device including the solenoid valve unit and the thermocouple unit can be fixed by fixing the cylindrical male terminal to a desired position as a mounting flange while grounding.
[0021] 上記構成において、筒状雄端子は、電磁弁ユニットを所望の位置に固定するため のねじ込みキャップを一体的に有する、構成を採用することができる。 In the above configuration, a configuration may be adopted in which the cylindrical male terminal integrally has a screw-in cap for fixing the electromagnetic valve unit at a desired position.
この構成によれば、筒状雄端子をアースしつつねじ込みキャップを所望の位置に 螺合することで、電磁弁ユニット及び熱電対ユニットからなるガス立消え安全装置を 固定することができる。  According to this configuration, the gas extinguishing safety device including the solenoid valve unit and the thermocouple unit can be fixed by screwing the screw cap into a desired position while grounding the cylindrical male terminal.
[0022] 上記構成において、電磁弁ユニットは、弁体と一体的に可動な可動鉄心と、コイル が卷回された固定鉄心とを含み、筒状雄端子は、固定鉄心を保持するホルダを一体 的に有する、構成を採用することができる。  [0022] In the above configuration, the solenoid valve unit includes a movable iron core movable integrally with the valve body, and a fixed iron core on which a coil is wound, and the cylindrical male terminal integrally includes a holder for holding the fixed iron core. The configuration having the following can be adopted.
この構成によれば、筒状雄端子が第 2コネクタと固定鉄心を保持するホルダとを兼 ねるため、部品点数を削減して構造を簡略ィ匕することができる。 [0023] また、本発明のガス立消え安全装置は、先端に感熱部を有する熱電対ユニットと、 熱電対ユニットで発生する熱起電力に基づ ヽて発生する電磁力により駆動される電 磁弁ユニットと、を備えたガス立消え安全装置であって、上記熱電対ユニットの感熱 部は、棒状導体と、棒状導体の周りに筒状に配置されると共に先端が円錐形状に形 成されて棒状導体に接合される筒状導体とを含み、筒状導体は、棒状導体に接合さ れた先端の温接点部に比べて後端側の冷接点部が厚肉に形成されている、構成と なっている。 According to this configuration, since the cylindrical male terminal doubles as the second connector and the holder for holding the fixed iron core, the number of components can be reduced and the structure can be simplified. [0023] Further, the gas extinguishing safety device of the present invention provides a thermocouple unit having a thermosensitive portion at a tip thereof, and an electromagnetic valve driven by an electromagnetic force generated based on thermoelectromotive force generated by the thermocouple unit. A heat-sensing part of the thermocouple unit, wherein the heat-sensitive portion of the thermocouple unit is a rod-shaped conductor which is disposed in a cylindrical shape around the rod-shaped conductor and whose tip is formed in a conical shape. The cold junction at the rear end is formed thicker than the hot junction at the top joined to the rod-shaped conductor. ing.
この構成によれば、筒状導体の冷接点部側を厚肉に形成することで、従来に比べ て外径を縮小しても、従来同様に起電力特性、応答性を確保しつつ、小型化、低コ ストィ匕を達成することができ、又、従来と同様の外径寸法にすれば、従来に比べて起 電力特性及び応答性を向上させることができる。  According to this configuration, the cold junction portion side of the cylindrical conductor is formed thick, so that even if the outer diameter is reduced as compared with the conventional case, the electromotive force characteristics and responsiveness are maintained as before, and the size is reduced. In addition, when the outer diameter is the same as that of the related art, the electromotive force characteristics and the responsiveness can be improved as compared with the related art.
[0024] 上記構成の装置において、棒状導体と筒状導体の先端の接合領域には、最も外 径が小さい先端細径部が形成され、先端細径部は、温接点部から冷接点部までの 距離の約 30— 50パーセントの長さに形成されている、構成を採用することができる。 この構成によれば、従来に比べて先端細径部の長さを長くすることで、起電力特性 及び応答性を向上 (高起電カイ匕、高応答性化)させることができる。 [0024] In the apparatus having the above-described configuration, a small-diameter tip portion having the smallest outer diameter is formed in a joining region at the distal end of the rod-shaped conductor and the cylindrical conductor, and the small-diameter tip portion extends from the hot junction to the cold junction. A configuration can be employed that is formed to a length of about 30-50% of the distance. According to this configuration, the electromotive force characteristics and the responsiveness can be improved (high electromotive force and high responsiveness) by increasing the length of the small-diameter portion at the tip as compared with the related art.
発明の効果  The invention's effect
[0025] 上記のように、本発明のガス立消え安全装置によれば、電磁弁ユニット側の 2個の 端子と熱電対ユニット側の 2個の端子とは同一軸方向に備えられるので、装置を集約 化でき、装置の幅狭化、小型化を達成できる。また、筒状雄端子を備える一方のュ- ットにおいて、その筒状雄端子の中心軸位置に一方のユニットのもう 1個の端子を備 えることで、他方のユニットの外側雌端子に対して前記筒状雄端子はその中心軸を 中心とするどの角度でも嵌合接続させることができ、熱電対ユニットと電磁弁ユニット との接続の際に互いの取付け角度に自由度を得て、組付け作業を容易に行うことが できる。  As described above, according to the gas extinguishing safety device of the present invention, the two terminals on the solenoid valve unit side and the two terminals on the thermocouple unit side are provided in the same axial direction. It is possible to consolidate, and to achieve narrower and smaller devices. Also, in one of the units provided with the cylindrical male terminal, by providing another terminal of one unit at the center axis position of the cylindrical male terminal, the external female terminal of the other unit is provided. Thus, the cylindrical male terminal can be fitted and connected at any angle about the center axis thereof, and when the thermocouple unit and the solenoid valve unit are connected, a degree of freedom can be obtained in the mounting angle of each other, and assembling is performed. Mounting work can be performed easily.
更に、熱電対ユニットの感熱部において、棒状導体の周りに筒状に配置されると共 に先端が円錐形状に形成されて棒状導体に接合される筒状導体を、棒状導体に接 合された温接点部に比べて後端側の冷接点部を厚肉に形成することにより、従来同 様に起電力特性、応答性を確保しつつ、小型化、低コストィ匕を達成することができ、 又、従来の同様の大きさで、起電力特性及び応答性を向上させることができる。 図面の簡単な説明 Further, in the thermosensitive part of the thermocouple unit, the cylindrical conductor which is cylindrically arranged around the rod-shaped conductor and whose tip is formed in a conical shape and which is joined to the rod-shaped conductor is joined to the rod-shaped conductor. By forming the cold junction on the rear end side thicker than the hot junction, Thus, downsizing and low cost can be achieved while securing the electromotive force characteristics and the responsiveness, and the electromotive force characteristics and the responsiveness can be improved with the same size as the conventional one. Brief Description of Drawings
[図 1]本発明に係るガス立消え安全装置の一実施形態を示すものであり、(a)は装置 の正面図、(b)は装置の側面図である。 FIG. 1 shows one embodiment of a gas extinguishing safety device according to the present invention, wherein (a) is a front view of the device and (b) is a side view of the device.
[図 2]図 1に示す装置を嵌合方向(軸線方向)に切断した断面図である。  FIG. 2 is a cross-sectional view of the device shown in FIG. 1, cut in a fitting direction (axial direction).
[図 3]図 1に示す装置を構成する電磁弁ユニットと熱電対ユニットとを分離した状態を 示す断面図である。  FIG. 3 is a cross-sectional view showing a state where a solenoid valve unit and a thermocouple unit constituting the device shown in FIG. 1 are separated.
[図 4] (a)は図 2中の E1— E1における断面図、(b)は図 2中の E2— E2における断面 図である。  FIG. 4 (a) is a cross-sectional view taken along line E1-E1 in FIG. 2, and FIG. 4 (b) is a cross-sectional view taken along line E2-E2 in FIG.
[図 5]熱電対ユニットの第 1コネクタの一部を示す断面図である。  FIG. 5 is a cross-sectional view showing a part of a first connector of the thermocouple unit.
[図 6]熱電対ユニットの内側雌端子と電磁弁ユニットのピン状雄端子との関係を示す ものであり、(a)は側面図、(b)は正面図、(c)は一部を拡大した正面図、(d)は図 6 ( c)中の E3— E3における断面図である。 FIG. 6 shows the relationship between the female terminal inside the thermocouple unit and the pin-shaped male terminal of the solenoid valve unit, (a) is a side view, (b) is a front view, and (c) is a part. FIG. 6 (d) is an enlarged front view, and is a cross-sectional view taken along line E3-E3 in FIG. 6 (c).
[図 7]熱電対ユニットの感熱部を示すものであり、(a)は外観図、(b)は断面図である。  FIG. 7 is a view showing a heat-sensitive portion of a thermocouple unit, where (a) is an external view and (b) is a cross-sectional view.
[図 8]熱電対ユニットの感熱部の他の実施形態を示すものであり、(a)は外観図、(b) は断面図である。 FIG. 8 shows another embodiment of the thermosensitive part of the thermocouple unit, where (a) is an external view and (b) is a cross-sectional view.
[図 9]本発明に係るガス立消え安全装置の他の実施形態を示す断面図である。  FIG. 9 is a cross-sectional view showing another embodiment of the gas extinguishing safety device according to the present invention.
[図 10]本発明に係るガス立消え安全装置のさらに他の実施形態を示す断面図である  FIG. 10 is a sectional view showing still another embodiment of the gas extinguishing safety device according to the present invention.
[図 11]本発明に係るガス立消え安全装置のその他の実施形態を示す斜視図である。 FIG. 11 is a perspective view showing another embodiment of the gas extinguishing safety device according to the present invention.
[図 12]図 11に示すガス立消え安全装置の断面図である。 FIG. 12 is a sectional view of the gas extinguishing safety device shown in FIG. 11.
[図 13]従来のガス立消え安全装置が適用されたガスコン口のシステムを示すシステム 図である。  FIG. 13 is a system diagram showing a gas inlet port system to which a conventional gas extinguishing safety device is applied.
[図 14]従来のガス立消え安全装置を示すものであり、(a)は装置の断面図、(b)は装 置の端面図である。  FIG. 14 shows a conventional gas extinguishing safety device, in which (a) is a cross-sectional view of the device and (b) is an end view of the device.
[図 15]従来のガス立消え安全装置の一部をなす熱電対ユニットの感熱部を示すもの であり、(a)は外観図、(b)は断面図である。 符号の説明 FIG. 15 is a view showing a heat-sensitive portion of a thermocouple unit forming a part of a conventional gas extinguishing safety device, (a) is an external view, and (b) is a cross-sectional view. Explanation of reference numerals
100, 100' , 100" 電磁弁ユニット  100, 100 ', 100 "solenoid valve unit
101 固定鉄心  101 Fixed iron core
102 ボビン  102 bobbin
103 励磁用のコイル  103 Excitation coil
104 ホノレダ  104 Honoreda
105 ピン状雄端子(一対の雄端子の一方)  105 pin male terminals (one of a pair of male terminals)
106 絶縁部材  106 Insulation material
107, 107' , 107" 筒状雄端子(一対の雄端子の他方、第 2コネクタ) 107, 107 ', 107 "cylindrical male terminal (the other of a pair of male terminals, second connector)
107a 取り付けフランジ 107a Mounting flange
107b 折返し部  107b Folding part
107a' ホノレダ  107a 'Honoreda
107b' 段差部  107b 'step
107a" ねじ込みキャップ  107a "screw cap
107b" 段差部  107b "step
108 ケース  108 cases
109 シャフト  109 shaft
110 可動鉄心  110 Movable iron core
111 弁体  111 valve
112 スプリング  112 spring
200 熱電対ユニット  200 thermocouple unit
201, 201' 感熱部  201, 201 'heat sensitive part
201a 棒状導体  201a Bar-shaped conductor
201b, 201b' 筒状導体  201b, 201b 'tubular conductor
201c, 201 第 2筒状導体  201c, 201 2nd tubular conductor
202 第 1ケーブル  202 No. 1 cable
203 第 2ケーブル  203 2nd cable
204 内側雌端子 (一対の雌端子の一方) 204a 一対のバネ片 204 Inner female terminal (one of a pair of female terminals) 204a A pair of spring pieces
204a' 可撓片  204a 'flexible piece
205 外側雌端子 (一対の雌端子の他方)  205 Outer female terminal (the other of a pair of female terminals)
205a 一対のバネ片  205a A pair of spring pieces
205a' 可撓片  205a 'flexible piece
206 第 1コネクタ  206 1st connector
206a 嵌合部  206a mating part
206a' 変形部  206a 'deformed part
206a" 爪部  206a "claw
206b 挟持片  206b Nipping piece
207 シーノレ咅附  207 Sinolle
300 第 1ユニット  300 1st unit
301 筒状雄端子  301 cylindrical male terminal
302 内側雌端子  302 Inner female terminal
400 第 2ユニット  400 2nd unit
401 ピン状雄端子  401 pin male terminal
402 外側雌端子  402 Outer female terminal
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0028] 以下、本発明の最良の実施形態について添付図面を参照しつつ説明する。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
図 1ないし図 7は、本発明に係るガス立消え安全装置の一実施形態を示すものであ り、図 1は装置全体を示す正面図及び側面図、図 2は装置の軸線方向における断面 図、図 3は電磁弁ユニットと熱電対ユニットとを分離した状態を示す断面図、図 4は装 置の軸線に垂直な方向における断面図、図 5は装置の一部を示す断面図、図 6は端 子の構造を示す部分図、図 7は熱電対ユニットの感熱部を示す側面図及び断面図 である。  1 to 7 show one embodiment of a gas extinguishing safety device according to the present invention, FIG. 1 is a front view and a side view showing the entire device, FIG. 2 is a cross-sectional view in the axial direction of the device, FIG. 3 is a cross-sectional view showing a state where the solenoid valve unit and the thermocouple unit are separated, FIG. 4 is a cross-sectional view in a direction perpendicular to the axis of the device, FIG. 5 is a cross-sectional view showing a part of the device, and FIG. FIG. 7 is a partial view showing the structure of the terminal, and FIG. 7 is a side view and a sectional view showing a heat-sensitive portion of the thermocouple unit.
[0029] この装置は、図 1ないし図 3に示すように、電磁弁ユニット 100と熱電対ユニット 200 とを着脱自在に連結したものである。  As shown in FIGS. 1 to 3, this device has a solenoid valve unit 100 and a thermocouple unit 200 detachably connected to each other.
電磁弁ユニット 100は、図 1ないし図 3に示すように、固定鉄心 101、固定鉄心 101 を保持する榭脂製のボビン 102、固定鉄心 101及びボビン 102に一体的に卷回され た励磁用のコイル 103、ボビン 102をカシメにより固定する導電性のホルダ 104、コィ ル 103の一端 103aに接続されて一対の雄端子の一方をなすピン状雄端子(内側雄 端子) 105、ピン状雄端子 105をホルダ 104の中心に保持すると共に両者を電気的 に絶縁する絶縁部材 106、ホルダ 104に接合され導電性の材料により形成された一 対の雄端子の他方をなす筒状雄端子 107、固定鉄心 101を覆う榭脂製のケース 10 8、ケース 108に摺動自在に支持されたシャフト 109の一端に固定された可動鉄心 1 10、シャフト 109の他端に固定されたゴム製の弁体 111、弁体 111を外向きに付勢 するスプリング 112等により形成されている。 As shown in FIGS. 1 to 3, the solenoid valve unit 100 includes a fixed core 101, a fixed core 101. Resin bobbin 102 for holding the coil, fixed core 101 and exciting coil 103 wound integrally with bobbin 102, conductive holder 104 for fixing bobbin 102 by caulking, and one end 103a of coil 103. A pin-shaped male terminal (inner male terminal) 105 that is connected to form one of a pair of male terminals, an insulating member 106 that holds the pin-shaped male terminal 105 at the center of the holder 104, and electrically insulates both from each other. A cylindrical male terminal 107 which is the other of a pair of male terminals joined and formed of a conductive material, a resin case 108 covering the fixed iron core 101, and a shaft 109 slidably supported by the case 108. A movable iron core 110 fixed to one end of the shaft 109, a rubber valve body 111 fixed to the other end of the shaft 109, a spring 112 for urging the valve body 111 outward, and the like.
[0030] 固定鉄心 101は、パーマロイ等の磁性材料により、略 U字形状に形成されている。  [0030] The fixed iron core 101 is formed in a substantially U-shape from a magnetic material such as permalloy.
ボビン 102は、榭脂材料等の絶縁材料 (非導電性材料)により、略逆 U字形状に形成 されており、固定鉄心 101を保持した状態で、ボビン 102と固定鉄心 101とは略 H字 形状をなし、それらの回りに縦巻きにコイル 103が卷回されて!/、る。  The bobbin 102 is formed in a substantially inverted U-shape using an insulating material (a non-conductive material) such as a resin material, and the bobbin 102 and the fixed core 101 are substantially H-shaped while holding the fixed core 101. A coil 103 is wound around them in a vertical winding around them.
ホルダ 104は、真鍮等の導電性材料により形成されており、その上端片がカシメら れてボビン 103を固定し、又、その上端にはコイル 103の他端 103bが溶着、圧接等 により電気的に接続されている。  The holder 104 is formed of a conductive material such as brass, and the upper end piece is caulked to fix the bobbin 103, and the other end 103b of the coil 103 is electrically connected to the upper end by welding, pressure welding, or the like. It is connected to the.
[0031] ピン状雄端子 105は、導電性材料により先端が閉じた先細りの円筒状 (ニードル形 状)に形成されている。そして、絶縁部材 106により、ホルダ 104と非接触の状態で中 央に保持されている。  [0031] The pin-shaped male terminal 105 is formed of a conductive material in a tapered cylindrical shape (needle shape) having a closed end. And, it is held at the center by the insulating member 106 without contact with the holder 104.
筒状雄端子 107は、所定の板厚をなす金属板等の導電性材料を型成形 (深絞り加 ェ)して円筒状に形成され、上端に略菱形の取り付けフランジ 107aを一体的に有し 、又、その先端縁部が内側に折り返されて折返し部 107bをもつように形成されている 。そして、この筒状雄端子 107は、熱電対ユニット 200 (の後述する第 1コネクタ 206) に嵌合される第 2コネクタとして機能するものである。  The cylindrical male terminal 107 is formed into a cylindrical shape by molding (deep drawing) a conductive material such as a metal plate having a predetermined thickness, and has a substantially diamond-shaped mounting flange 107a at the upper end. Further, the leading edge is folded inward to form a folded portion 107b. The cylindrical male terminal 107 functions as a second connector fitted to the thermocouple unit 200 (a first connector 206 described later).
[0032] ここで、筒状雄端子 107とピン状雄端子 105との関係は、図 3に示すように、ピン状 雄端子 105が筒状雄端子 107の内側中央に配置され、かつ、筒状雄端子 107がピ ン状雄端子 105よりも寸法 Lだけ長めに、すなわち、ピン状雄端子 105が筒状雄端子 107から突出しな 、ように形成されて!、る。 これにより、電磁弁ユニット 100だけで取り扱われる場合に、仮に落下あるいは他の 部品と衝突させても、ピン状雄端子 105は直接他の物と接触しないため、その屈曲、 折損等を防止することができる。 Here, the relationship between the cylindrical male terminal 107 and the pin-shaped male terminal 105 is that, as shown in FIG. 3, the pin-shaped male terminal 105 is arranged at the center inside the cylindrical male terminal 107 and The male terminal 107 is formed so as to be longer than the male terminal 105 by the dimension L, that is, the male terminal 105 does not protrude from the male terminal 107. This prevents the pin-shaped male terminal 105 from coming into direct contact with other objects even if it is dropped or collides with other parts when handled only by the solenoid valve unit 100. Can be.
また、筒状雄端子 107の折返し部 107bを含めた肉厚とピン状雄端子 105の外径と は、同一の寸法に形成されている。これにより、後述する内側雌端子 204と外側雌端 子 205として同一のものを採用することができる。  Further, the wall thickness of the cylindrical male terminal 107 including the folded portion 107b and the outer diameter of the pin-shaped male terminal 105 are formed to have the same dimensions. As a result, the same inner female terminal 204 and outer female terminal 205 described later can be employed.
[0033] 熱電対ユニット 200は、図 1ないし図 4に示すように、先端に形成された感熱部 201 、感熱部 201から導かれる第 1ケーブル 202及び第 2ケーブル 203、第 1ケーブル 20 2の端部に結合されて一対の雌端子の一方をなす内側雌端子 204、第 2ケーブル 2 03の端部に結合されて一対の雌端子の他方をなす外側雌端子 205、内側雌端子 2 04及び外側雌端子 205を保持する第 1コネクタ 206、第 1コネクタ 206の一端部を密 閉するシール部材 207等により形成されている。 As shown in FIG. 1 to FIG. 4, the thermocouple unit 200 includes a thermosensitive portion 201 formed at the tip, a first cable 202 and a second cable 203, and a first cable 202 led from the thermosensitive portion 201. An inner female terminal 204 connected to the end to form one of the pair of female terminals, an outer female terminal 205 connected to the end of the second cable 203 to form the other of the pair of female terminals, an inner female terminal 204 and The first connector 206 that holds the outer female terminal 205, a seal member 207 that closes one end of the first connector 206, and the like are formed.
ここで、内側雌端子 204と外側雄端子 205としては、同一の部品が採用されている ため、部品の共通化による装置の低コストィ匕を達成することができる。  Here, since the same components are employed as the inner female terminal 204 and the outer male terminal 205, the cost can be reduced by using a common component.
[0034] 感熱部 201は、図 1及び図 7 (a) , (b)に示すように、第 1ケーブル 202に接続され た棒状導体 201a、棒状導体 201aの周りに筒状に配置されて先端が円錐状に形成 されて棒状導体 201aに接合された筒状導体 201b、筒状導体 201bを第 1ケーブル 203に接続する第 2筒状導体 201c等により形成されている。 [0034] As shown in Figs. 1 and 7 (a) and 7 (b), the heat-sensitive portion 201 has a rod-shaped conductor 201a connected to the first cable 202, and is disposed in a cylindrical shape around the rod-shaped conductor 201a. Are formed in a conical shape and are formed by a cylindrical conductor 201b joined to the rod-shaped conductor 201a, a second cylindrical conductor 201c connecting the cylindrical conductor 201b to the first cable 203, and the like.
棒状導体 201aは、 Ni, Cu, Mnの合金材料により、中実形状に形成されている。 筒状導体 201bは、 Ni, Cr, Feの合金材料により、先端が円錐状にかつ後端側が円 筒状に形成されており、かつ、円錐状の領域の肉厚よりも円筒状の肉厚が厚めに形 成されている。また、筒状導体 201bの円筒状部分の外径は、図 15に示す従来のも のよりも小径に形成されている。さらに、第 2筒状導体 201cは、外径が φ ϋΐをなす 円筒状に形成され、図 15に示す従来のものよりも小径 D1く φ ϋ)となっている。  The rod-shaped conductor 201a is formed in a solid shape from an alloy material of Ni, Cu, and Mn. The cylindrical conductor 201b is made of an alloy material of Ni, Cr, and Fe, and has a conical tip and a cylindrical rear end, and has a cylindrical thickness greater than the thickness of the conical region. Is thicker. Further, the outer diameter of the cylindrical portion of the cylindrical conductor 201b is formed smaller than the conventional one shown in FIG. Further, the second cylindrical conductor 201c is formed in a cylindrical shape having an outer diameter of φϋΐ, and has a smaller diameter D1 (φϋ) than the conventional one shown in FIG.
[0035] そして、図 7 (b)に示すように、棒状導体 201aと筒状導体 201bとが接合された先端 領域に温接点部 P1、温接点部 P1から所定の距離だけ隔てた後方の位置に冷接点 部 P2, P3をもつように形成されている。 Then, as shown in FIG. 7 (b), the hot junction portion P1 is located at the distal end region where the rod-shaped conductor 201a and the cylindrical conductor 201b are joined, and a rear position separated by a predetermined distance from the hot junction portion P1. It has cold junctions P2 and P3.
ここで、筒状導体 201bの後端側すなわち冷接点部 P2が温接点部 P1に比べて厚 肉に形成されているため、従来に比べて筒状導体 20 lbの外径を縮小しても、従来 同様に起電力特性、応答性を確保しつつ、小型化、低コストィ匕を達成することができ る。 Here, the rear end of the cylindrical conductor 201b, that is, the cold junction P2 is thicker than the hot junction P1. Even if the outer diameter of the cylindrical conductor is reduced by 20 lb compared to the conventional one, it is possible to achieve miniaturization and low cost while maintaining the electromotive force characteristics and responsiveness as before. Can be done.
また、棒状導体 201aと筒状導体 201bの先端の接合領域には、最も小さい外径 φ dをなす先端細径部が画定されており、この先端細径部の長さ L1は、温接点部 P1か ら冷接点部 P2までの距離の約 30— 50パーセントの長さに形成されている。この寸 法 L1は、図 15に示す従来のものの寸法 Lよりも長く設定されており、高起電力化、高 応答性化に寄与する。  In the joining region at the tip of the rod-shaped conductor 201a and the tubular conductor 201b, a tip small-diameter portion having the smallest outer diameter φd is defined, and the length L1 of the tip small-diameter portion is defined as a hot junction portion. The length is about 30-50% of the distance from P1 to the cold junction P2. This dimension L1 is set longer than the dimension L of the conventional one shown in FIG. 15, and contributes to higher electromotive force and higher responsiveness.
[0036] 尚、他の感熱部 20Γとしては、図 8 (a) , (b)に示すように、図 15に示す従来のもの と同一の外径をなす筒状導体 201 及び従来のものと同一の外径 φ Dをなす第 2筒 状導体 201 並びに従来のものと同一の外径 φ d及び長さ Lをなす先端細径部を採 用し、筒状導体 201 の後端側すなわち冷接点部 P2が温接点部 P1に比べて厚肉 となるように形成してもよい。この場合は、従来のものと同様の大きさで、起電力特性 及び応答性を一層向上させることができる。  As shown in FIGS. 8 (a) and 8 (b), the other heat-sensitive portion 20 ° includes a cylindrical conductor 201 having the same outer diameter as the conventional one shown in FIG. The second cylindrical conductor 201 having the same outer diameter φD and the narrow portion at the front end having the same outer diameter φd and length L as the conventional one are adopted. The contact portion P2 may be formed to be thicker than the hot junction portion P1. In this case, the electromotive force characteristics and the responsiveness can be further improved with the same size as the conventional one.
[0037] 内側雌端子 204は、図 3、図 4、図 6 (a) , (b) , (c) , (d)に示すように、ピン状雄端 子 105をその軸線に沿って外周面の径方向両外側から挟持し得るように形成された 一対のノネ片 204a、 204aを有する。一対のノネ片 204a, 204aiま、図 6 (d)【こ示す ように、それぞれ略 V字形状に折り曲げられて、お互いに対向して、ピン状雄端子 10 5の外周面に両側から接触し得る一対の可撓片 204a 204a'を有する。  [0037] As shown in FIGS. 3, 4, and 6 (a), (b), (c), and (d), the inner female terminal 204 has a pin-shaped male terminal 105 which extends along its axis. It has a pair of non-pieces 204a, 204a formed so as to be sandwiched from both radially outer sides of the surface. As shown in FIG. 6 (d), each of the pair of non-pieces 204a and 204ai is bent into a substantially V-shape, and is opposed to each other to contact the outer peripheral surface of the pin-shaped male terminal 105 from both sides. It has a pair of flexible pieces 204a 204a ′ to be obtained.
[0038] そして、ピン状雄端子 105は、一対の可撓片 204a 204a'の橈み方向(図 4 (a) ,  [0038] The pin-shaped male terminal 105 is positioned in the radial direction of the pair of flexible pieces 204a 204a '(Fig. 4 (a),
(b)の水平方向)に略垂直な方向(図 4 (a) , (b)の紙面に垂直な方向)にお 、て、挿 入及び離脱自在になって!/、る。  In a direction substantially perpendicular to (horizontal direction in (b)) (a direction perpendicular to the paper surface in FIGS. 4 (a) and 4 (b)), it is possible to insert and remove freely!
したがって、ピン状雄端子 105と内側雌端子 204との接触圧力は、挿入及び離脱 方向にお 、て略均一に作用するため、両者の電気的な接触を安定した状態で確実 に得ることができる。  Therefore, since the contact pressure between the pin-shaped male terminal 105 and the inner female terminal 204 acts substantially uniformly in the insertion and removal directions, it is possible to reliably obtain stable electrical contact therebetween. .
[0039] 外側雌端子 205は、内側雌端子 204と略同一の形状に形成されており、図 3及び 図 4に示すように、筒状雄端子 107の壁面を内側及び外側力ゝら挟持し得るように形成 された一 ¾ "のノネ; 205a、 205&を¾ "する。一 のノネ; 205a, 205ai¾、 04 (b) に示すように、それぞれ略 V字形状に折り曲げられて、お互いに対向して、筒状雄端 子 107の内周面及び外周面の両側から接触し得る一対の可撓片 205a,, 205a,を 有する。なお、外側雌端子 205は筒状雄端子 107の壁面を内側と外側の一方側の みに接触するものであっても良い。 [0039] The outer female terminal 205 is formed in substantially the same shape as the inner female terminal 204, and as shown in Figs. 3 and 4, sandwiches the wall surface of the cylindrical male terminal 107 between the inner and outer forces.一 ノ 一 一 一 一 一 一 一 一 一 一 205 205. One no; 205a, 205ai¾, 04 (b) As shown in FIG. 5, a pair of flexible pieces 205a, 205a, 205a, 205a, 205a, It has. The outer female terminal 205 may be such that the wall surface of the cylindrical male terminal 107 contacts only one of the inner side and the outer side.
[0040] そして、筒状雄端子 107は、一対の可撓片 205a 205a'の橈み方向(図 4 (a) , ( b)の水平方向)に略垂直な方向(図 4 (a) , (b)の紙面に垂直な方向)にお 、て、揷 入及び離脱自在になって!/、る。 [0040] Then, the tubular male terminal 107, a pair of oar viewed portion of the flexible pieces 205a 205 a '(FIGS. 4 (a), (horizontal b)) substantially perpendicular to the (FIGS. 4 (a) , (b) in a direction perpendicular to the plane of the paper), and can be freely inserted and removed!
したがって、筒状雄端子 107と外側雌端子 205との接触圧力は、挿入及び離脱方 向にお 、て略均一に作用するため、両者の電気的な接触を安定した状態で確実に 得ることができる。  Therefore, since the contact pressure between the cylindrical male terminal 107 and the outer female terminal 205 acts almost uniformly in the insertion and removal directions, it is possible to surely obtain a stable electrical contact therebetween. it can.
[0041] 第 1コネクタ 206は、図 3及び図 4に示すように、内側雌端子 204を保持し筒状雄端 子 107の内側に嵌合される嵌合部 206a、嵌合部 206aの外周面と協働して外側雌 端子 205を保持すると共に筒状雄端子 107を外側から挟み込む挟持片 206b等によ り形成されている。  As shown in FIGS. 3 and 4, the first connector 206 holds the inner female terminal 204 and is fitted to the inside of the cylindrical male terminal 107. The outer periphery of the fitting portion 206 a The outer female terminal 205 is formed in cooperation with the surface, and is formed by a holding piece 206b and the like that sandwich the cylindrical male terminal 107 from the outside.
また、嵌合部 206aは、その一部が嵌合方向において切り込みを入れた状態に形 成され嵌合方向に垂直な方向に弾性変形し得る変形部 206^を含むように形成され ている。そして、変形部 206 の先端には、図 5に示すように、筒状雄端子 107の折 返し部 107bに掛止される爪部 206a, 'がー体的に形成されて!、る。  Further, the fitting portion 206a is formed so that a part thereof is cut in the fitting direction and includes a deformable portion 206 ^ that can be elastically deformed in a direction perpendicular to the fitting direction. Then, at the tip of the deformed portion 206, as shown in FIG. 5, a claw portion 206a, 'which is hooked on the folded portion 107b of the cylindrical male terminal 107 is formed physically.
[0042] したがって、嵌合部 206aを筒状雄端子 107に挿入する際に、変形部 206a,が内 側に変形しつつ所定の位置まで嵌合されると、弾性復帰してその先端にある爪部 20 6a~が筒状雄端子 107の折返し部 107bに掛止される。すなわち、嵌合部 206a (第 1コネクタ 206)と筒状雄端子 (第 2コネクタ) 107との嵌合作業を容易に行なえると同 時に、嵌合部 206aが筒状雄端子 107から不意に抜け落ちるのを確実に防止するこ とがでさる。 [0042] Therefore, when the fitting portion 206a is inserted into the cylindrical male terminal 107, if the deforming portion 206a is fitted to a predetermined position while being deformed inward, it returns elastically and is located at the tip thereof. The claw portions 206a ~ are engaged with the folded portions 107b of the cylindrical male terminals 107. That is, while the fitting operation between the fitting portion 206a (the first connector 206) and the cylindrical male terminal (second connector) 107 can be easily performed, the fitting portion 206a suddenly moves from the cylindrical male terminal 107. It can surely prevent falling off.
[0043] 上記構成において、嵌合部 206aは、変形部 206 と一体となって、円筒形状をな す第 2コネクタとしての筒状雄端子 107に適合するように略円柱形状に形成されてい る。すなわち、第 1コネクタ 206と第 2コネクタ (筒状雄端子) 107とを嵌合すると、嵌合 部 206aが筒状雄端子 107の内側に嵌合されて、嵌合部 206aに包囲された内側雌 端子 204にピン状雄端子 105が嵌め込まれて接続され、挟持片 206bが嵌合部 206 aの外周面と協働して筒状雄端子 107を挟み込み、外側雌端子 205に筒状雄端子 1 07の内外面が接触するように筒状雄端子 107が嵌め込まれて接続されて、確実な 電気的接触が得られる。 In the above configuration, the fitting portion 206a is formed in a substantially cylindrical shape so as to be integrated with the deformable portion 206 so as to fit the cylindrical male terminal 107 as the second connector having a cylindrical shape. . That is, when the first connector 206 and the second connector (cylindrical male terminal) 107 are fitted, the fitting portion 206a is fitted inside the tubular male terminal 107, and the inside surrounded by the fitting portion 206a is fitted. female The pin-shaped male terminal 105 is fitted and connected to the terminal 204, and the holding piece 206b cooperates with the outer peripheral surface of the fitting portion 206a to sandwich the cylindrical male terminal 107, and the outer female terminal 205 is connected to the cylindrical male terminal 1 The cylindrical male terminal 107 is fitted and connected so that the inner and outer surfaces of 07 are in contact with each other, so that reliable electrical contact is obtained.
また、筒状雄端子 (第 2コネクタ) 107と嵌合部 206a (第 1コネクタ 206)とは、軸線回 りに点対称的に嵌合されることになるため、第 1コネクタ 206と第 2コネクタ (筒状雄端 子) 107とは、方向性がなくいずれの角度方向においても嵌合でき、組付け作業を容 易に行なうことができる。  The cylindrical male terminal (second connector) 107 and the fitting portion 206a (first connector 206) are fitted point-symmetrically around the axis, so that the first connector 206 and the second connector 206 The connector (cylindrical male terminal) 107 has no directionality and can be fitted in any angle direction, so that the assembling work can be easily performed.
[0044] 上記構成をなす電磁弁ユニット 100と熱電対ユニット 200との組付けに際しては、 図 3に示すように、ピン状雄端子 105が内側雌端子 204に対向するように位置決めし て両者を近づけ、筒状雄端子 (第 2コネクタ) 107内に第 1コネクタ 206の嵌合部 206 a (及び変形部 206 )を挿入すると、変形部 206 が中心寄りに変形しつつ嵌合が 終了した時点で、爪部 206a~が折返し部 107bに掛止されて、電磁弁ユニット 100と 熱電対ユニット 200とが確実に連結される。  When assembling the solenoid valve unit 100 and the thermocouple unit 200 having the above configuration, as shown in FIG. 3, the pin-shaped male terminal 105 is positioned so as to face the inner female terminal 204 and both are positioned. When the fitting portion 206a (and the deformed portion 206) of the first connector 206 is inserted into the cylindrical male terminal (second connector) 107, the deformed portion 206 is deformed toward the center and the fitting is completed. As a result, the claw portions 206a ~ are hooked on the folded portions 107b, and the solenoid valve unit 100 and the thermocouple unit 200 are securely connected.
[0045] また、この嵌合動作と同時に、ピン状雄端子(内側雄端子) 105が内側雌端子 204 に入り込んで一対のバネ片 204a、 204aに挟持され、筒状雄端子 107の内周面及び 外周面が外側雌端子 205に入り込んで一対のバネ片 205a, 205aに挟持される。こ れにより、一対の雄端子 (ピン状雄端子 105及び筒状雄端子 107)と一対の雌端子( 内側雌端子 204及び外側雌端子 205)とが電気的に確実に接続される。  At the same time as the fitting operation, the pin-shaped male terminal (inner male terminal) 105 enters the inner female terminal 204 and is sandwiched between the pair of spring pieces 204a, 204a. And, the outer peripheral surface enters the outer female terminal 205 and is held between the pair of spring pieces 205a, 205a. Thus, the pair of male terminals (the pin-shaped male terminal 105 and the cylindrical male terminal 107) and the pair of female terminals (the inner female terminal 204 and the outer female terminal 205) are electrically reliably connected.
[0046] 次に、このガス立消え安全装置力 図 13に示すようなガスコン口のシステムに適用 された場合の動作について説明すると、先ず操作軸 9を押して、ガス供給管 1及び補 助供給管 3内にガスを導き、点火パーナ 4の炎によりメインパーナ 2を着火させる。す ると、メインパーナ 2の炎は熱電対ユニット 200の感熱部 201を加熱する。  Next, the operation when applied to the gas outlet system shown in FIG. 13 will be described. First, the operating shaft 9 is pushed, and the gas supply pipe 1 and the auxiliary supply pipe 3 are pushed. The gas is introduced into the furnace and the flame of the ignition parner 4 ignites the main parner 2. Then, the flame of the main parner 2 heats the thermosensitive part 201 of the thermocouple unit 200.
この加熱により、熱電対ユニット 200に熱起電力が発生し、この熱起電力により生じ た電流が第 1ケーブル 202及び第 2ケーブル 203を介して、電磁弁ユニット 100のコ ィル 103を流れて電磁力を発生させる。そして、この電磁力により可動鉄心 110は固 定鉄心 101に吸引されて、弁体 111はガスの通路を開放した状態に保持される。 一方、吹き消え、煮こぼれ等によりメインパーナ 2の炎が立ち消えすると、熱電対ュ ニット 200の加熱が停止して、熱起電力すなわち電磁力が消滅し、弁体 111はスプリ ング 112により押し戻されてガスの通路を閉鎖する。これにより、未燃ガスの放出が防 止される。 This heating generates a thermoelectromotive force in the thermocouple unit 200, and the current generated by the thermoelectromotive force flows through the coil 103 of the solenoid valve unit 100 via the first cable 202 and the second cable 203. Generates electromagnetic force. Then, the movable iron core 110 is attracted to the fixed iron core 101 by this electromagnetic force, and the valve body 111 is held in a state where the gas passage is opened. On the other hand, when the flame of the main parna 2 goes out due to blowout or boiling over, the thermocouple The heating of the knit 200 stops, the thermoelectromotive force, that is, the electromagnetic force disappears, and the valve body 111 is pushed back by the spring 112 to close the gas passage. As a result, the emission of unburned gas is prevented.
[0047] 図 9は、本発明に係るガス立消え安全装置の他の実施形態を示すものであり、前述 の実施形態と同一の構成については同一の符号を付してその説明を省略する。 この装置は、図 9に示すように、前述の実施形態に対して、電磁弁ユニット 10CTの 一部を変更したものであり、図 2に示す筒状雄端子 107及びホルダ 104に替えて、第 2コネクタとして筒状雄端子 107'を採用したものである。  FIG. 9 shows another embodiment of the gas extinguishing safety device according to the present invention. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIG. 9, this device is a modification of the above-described embodiment with a part of the solenoid valve unit 10CT being changed. Instead of the cylindrical male terminal 107 and the holder 104 shown in FIG. (2) A cylindrical male terminal 107 'is adopted as a connector.
すなわち、筒状雄端子 107Ίこは、固定鉄心 101及びボビン 102を保持するホルダ 107 が一体的に形成されており、嵌合部 206aが嵌合される円筒形状の内側には 、爪部 206a~を掛止させるための段差部 107 が形成されている。  That is, the cylindrical male terminal 107 has a holder 107 for holding the fixed iron core 101 and the bobbin 102 integrally formed, and has a claw portion 206a to a cylindrical shape inside the fitting portion 206a. A step 107 for hooking the step is formed.
[0048] この装置においては、筒状雄端子 107'が、熱電対ユニット 200の第 1コネクタ 206 に連結される第 2コネクタと固定鉄心 101を保持するホルダとを兼ねるため、その分 だけ部品点数が削減されて、構造が簡略化され、装置が小型化される。  [0048] In this apparatus, the cylindrical male terminal 107 'also serves as a second connector connected to the first connector 206 of the thermocouple unit 200 and a holder for holding the fixed iron core 101, so that the number of parts is reduced accordingly. Is reduced, the structure is simplified, and the device is downsized.
[0049] 図 10は、本発明に係るガス立消え安全装置のさらに他の実施形態を示すものであ り、前述の実施形態と同一の構成については同一の符号を付してその説明を省略す る。  FIG. 10 shows still another embodiment of the gas extinguishing safety device according to the present invention. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. You.
この装置は、図 10に示すように、前述の実施形態に対して、電磁弁ユニット 100~ の一部を変更したものであり、図 2に示す筒状雄端子 107に替えて、第 2コネクタとし て筒状雄端子 107"を採用したものである。  As shown in FIG. 10, this device is obtained by changing a part of the solenoid valve units 100 to the above-described embodiment, and replacing the cylindrical male terminal 107 shown in FIG. 2 with a second connector. It employs a cylindrical male terminal 107 ".
すなわち、筒状雄端子 107~には、ガス供給管 1等に螺合されるねじ込みキャップ 107a~がー体的に形成されており、嵌合部 206aが嵌合される円筒形状の内側に は、爪部 206a' 'を掛止させるための段差部 107 'が形成されて!、る。  That is, screw-in caps 107a to be screwed to the gas supply pipes 1 and the like are formed in the cylindrical male terminals 107 to, and the inside of the cylindrical shape in which the fitting portion 206a is fitted is formed inside the cylindrical male terminal 107 to. A step portion 107 ′ for hooking the claw portion 206 a ′ ′ is formed!
[0050] この装置においては、筒状雄端子 107 "が、熱電対ユニット 200の第 1コネクタ 20 6に連結される第 2コネクタと配管等のねじ部に螺合されるねじ込みキャップ 107a~ を兼ねるため、筒状雄端子 107, 'をアースしつつねじ込みキャップ 107a, 'を所望の 位置 (例えば、ガス供給管)に螺合することで、別個の固定部材を用いることなくガス 立消え安全装置を固定することができる。 [0051] 上記実施形態においては、第 2コネクタとしての筒状雄端子 107, 107' , 107一一を 円筒形状に形成し、第 1コネクタを形成する嵌合部 206aを略円柱形状に形成した場 合を示したが、これに限定されるものではなぐ円形以外の例えば矩形形状の筒状 雄端子と嵌合部とを採用してもよぐこの場合でも同様に装置を幅狭ィ匕あるいは小型 化することができ、又、一対の雄端子と一対の雌端子とを確実に接続することができ る。 [0050] In this device, the cylindrical male terminal 107 "also serves as the second connector connected to the first connector 206 of the thermocouple unit 200 and the screw-in cap 107a to be screwed into a thread portion such as a pipe. Therefore, by screwing the screw cap 107a, 'to the desired position (for example, gas supply pipe) while grounding the cylindrical male terminal 107,', the gas extinguishing safety device is fixed without using a separate fixing member. can do. In the above embodiment, the cylindrical male terminals 107, 107 ′, 107 as the second connector are formed in a cylindrical shape, and the fitting portion 206a forming the first connector is formed in a substantially cylindrical shape. Although a case is shown, the present invention is not limited to this. For example, a rectangular cylindrical male terminal other than a circular shape and a fitting portion may be employed. The size can be reduced, and the pair of male terminals and the pair of female terminals can be securely connected.
[0052] 上記実施形態にお!ヽては、一対の雌端子をなす内側雌端子 204及び外側雌端子 205力 それぞれ一対のノ 片 204a, 204a, 205a, 205aをちつ構成を示した力 これに限定されるものではなぐそれぞれ 1つもしくは 3つ以上のバネ片をもつ構成を 採用してちょい。  In the above embodiment, the force of the inner female terminal 204 and the outer female terminal 205 forming a pair of female terminals is represented by a pair of pieces 204a, 204a, 205a, 205a. It is not limited to this, but adopts a configuration with one or three or more spring pieces.
[0053] その他の実施形態を図 11及び図 12に基づいて説明する。図 1乃至図 4,図 9及び 図 10に示す実施形態においては、電磁弁ユニット 100に一対の雄端子であるピン状 雄端子 105と筒状雄端子 107 (107 107")を備え、熱電対ユニット 200に一対の 雌端子である内側雌端子 204と外側雌端子 205とを備え、ピン状雄端子 105と内側 雌端子 204とを嵌合させ、筒状雄端子 107と外側雌端子 205とを嵌合させるものを示 した。図 11及び図 12に示す実施形態においては、電磁弁ユニット 100に備える端子 は 2個の雄端子に限るものではなぐ熱電対ユニット 200に備える端子は 2個の雌端 子に限るものではなぐ電磁弁ユニット 100と熱電対ユニット 200とのそれぞれが、 1 個の雄端子と 1個の雌端子とを有するものを示す。  Other embodiments will be described with reference to FIGS. 11 and 12. In the embodiment shown in FIGS. 1 to 4, FIG. 9 and FIG. The unit 200 includes a pair of female terminals, an inner female terminal 204 and an outer female terminal 205, and the pin-shaped male terminal 105 and the inner female terminal 204 are fitted to each other to connect the cylindrical male terminal 107 and the outer female terminal 205. In the embodiment shown in Fig. 11 and Fig. 12, the terminals provided in the solenoid valve unit 100 are not limited to two male terminals, and the terminals provided in the thermocouple unit 200 are two female terminals. Each of the solenoid valve unit 100 and the thermocouple unit 200, which is not limited to a terminal, has one male terminal and one female terminal.
[0054] 一方の第一ユニット 300は、筒状雄端子 301と、その筒状雄端子 301の内部に備 えられるバネ材から成る一対の内側雌端子 302と、その内側雌端子 302の外側に位 置する支持部材 303とを有する。支持部材 303は絶縁材を素材とし、筒状雄端子 30 1と内側雌端子 302との間に介在させる。筒状雄端子 301の円筒の中心軸を Pとす れば、一対の内側雌端子 302は中心軸 Pを挟んだ位置に配置され、中心軸 Pと平行 な方向に伸びるものとする。支持部材 303は、筒状雄端子 301の中心軸 Pを中心と する筒状形状とし、その筒状形状は中心軸 Pに平行なスリット 304を形成する。なお、 この支持部材 303には、スリット 304は必ずしも形成しなくても良い。筒状雄端子 301 の内側に備えられる内側雌端子 302の先端は、筒状雄端子 301の先端より外側に 突出しないものとする。図 11においては、筒状雄端子 301は円筒の円弧状部分を含 む形状(円筒の一部を切り欠いた形状)としてあるが、筒状雄端子 301は切欠部の無 い円筒形状であっても良い。なお、図 1乃至図 4,図 9及び図 10に示す円筒状の筒 状雄端子 107も、図 11に示す円筒の円弧状部分を含む形状(円筒の一部を切り欠 いた形状)としても良い。 One of the first units 300 includes a cylindrical male terminal 301, a pair of inner female terminals 302 made of a spring material provided inside the cylindrical male terminal 301, and an outer side of the inner female terminal 302. And a supporting member 303 to be positioned. The support member 303 is made of an insulating material and is interposed between the cylindrical male terminal 301 and the inner female terminal 302. Assuming that the central axis of the cylinder of the cylindrical male terminal 301 is P, the pair of inner female terminals 302 are arranged at positions sandwiching the central axis P and extend in a direction parallel to the central axis P. The support member 303 has a cylindrical shape centered on the central axis P of the cylindrical male terminal 301, and the cylindrical shape forms a slit 304 parallel to the central axis P. Note that the support member 303 does not necessarily need to have the slit 304 formed therein. The tip of the inner female terminal 302 provided inside the cylindrical male terminal 301 is located outside the tip of the cylindrical male terminal 301. It shall not protrude. In FIG. 11, the cylindrical male terminal 301 has a shape including a circular arc portion of a cylinder (a shape in which a part of the cylinder is cut out), but the cylindrical male terminal 301 has a cylindrical shape without a notch. May be. It should be noted that the cylindrical male terminal 107 shown in FIGS. 1 to 4, 4, 9 and 10 also has a shape including a circular arc portion of the cylinder (a shape in which a part of the cylinder is cut away) shown in FIG. good.
[0055] 第二ユニット 400は、ピン状雄端子 401と、そのピン状雄端子 401と平行に伸びる バネ材から成る一対の外側雌端子 402と、それぞれの外側雌端子 402を支持するた めの絶縁材カもなる支持部材 403とを有する。第一ユニット 300と第二ユニット 400と を図 12に示すように互いに嵌合接続させた状態では、第二ユニット 400のピン状雄 端子 401は第一ユニット 300の一対の内側雌端子 302と接触し、第一ユニット 300の 筒状雄端子 301は第二ユニット 400の 1対の外側雌端子 402と接触するよう設定する 。即ち、第一ユニット 300と第二ユニット 400とを互いに嵌合接続させる場合に、ピン 状雄端子 401と内側雌端子 302とを嵌合接触させれば、第一ユニット 300の筒状雄 端子 301は円弧状のどの位置 (切欠部の無い筒状形状では 360度の角度のどの位 置)においても、第二ユニット 400の雌端子 402と嵌合接触する。  The second unit 400 includes a pin-shaped male terminal 401, a pair of outer female terminals 402 made of a spring material extending in parallel with the pin-shaped male terminal 401, and a support for supporting each outer female terminal 402. And a support member 403 which also serves as an insulating material. When the first unit 300 and the second unit 400 are fitted and connected to each other as shown in FIG. 12, the pin-shaped male terminal 401 of the second unit 400 contacts the pair of inner female terminals 302 of the first unit 300. Then, the cylindrical male terminal 301 of the first unit 300 is set to be in contact with the pair of outer female terminals 402 of the second unit 400. That is, when the first unit 300 and the second unit 400 are fitted and connected to each other, if the pin-shaped male terminal 401 and the inner female terminal 302 are brought into contact with each other, the cylindrical male terminal 301 of the first unit 300 is formed. Is in contact with the female terminal 402 of the second unit 400 at any position in the arc shape (any position at an angle of 360 degrees in the cylindrical shape having no notch).
[0056] 以上説明したように、第一ユニット 300も第二ユニット 400もそれぞれ、雄端子と雌 端子とを有しているものであり、第一ユニット 300も第二ユニット 400も、必ずしも 2個 の雄端子力 2個の雌端子を備えることに限定されるものではない。第一ユニット 300 は電磁弁ュ-ット 100であつても熱電対ュ-ット 200であっても良く、第二ユニット 40 0は熱電対ユニット 200であっても電磁弁ユニット 100であっても良い。また、図 1乃 至図 4では、電磁弁ユニット 100に一対の雄端子を備え、熱電対ユニット 200に一対 の雌端子を備えるようにしたが、この反対に、電磁弁ユニット 100に一対の雌端子を 備え、熱電対ユニット 200に一対の雄端子を備えるようにしても良!、。  [0056] As described above, each of the first unit 300 and the second unit 400 has a male terminal and a female terminal, and both the first unit 300 and the second unit 400 necessarily have two terminals. The male terminal force is not limited to having two female terminals. The first unit 300 may be a solenoid valve cut 100 or a thermocouple cut 200, and the second unit 400 may be a thermocouple unit 200 or a solenoid valve unit 100. Is also good. 1 to 4, the solenoid valve unit 100 has a pair of male terminals, and the thermocouple unit 200 has a pair of female terminals. On the contrary, the solenoid valve unit 100 has a pair of female terminals. The thermocouple unit 200 may be provided with a pair of male terminals.
[0057] 図 11及び図 12に示す実施形態においても、第二ユニット 400のピン状雄端子 401 と第一ユニット 300の内側雌端子 302とを嵌合接触させれば、第一ユニット 300の筒 状雄端子 301の円弧状のどの位置 (切欠部の無い筒状形状では 360度の角度のど の位置)でも、第二ユニット 400の雌端子 402で挟持接触させることができる。この結 果、電磁弁ユニット 100と熱電対ユニット 200との接続の際に、互いの取付け角度に 自由度を得て、組付け作業を容易に行うことができる。なお、第二ユニット 400におけ る 2個の端子を図 1乃至図 4に示す第 2コネクタ 206のようなコネクタで囲っても良い。 産業上の利用可能性 In the embodiment shown in FIGS. 11 and 12, if the pin-shaped male terminal 401 of the second unit 400 and the inner female terminal 302 of the first unit 300 are brought into contact with each other, the cylinder of the first unit 300 is Any position of the circular arc of the male terminal 301 (any position of 360 degrees in a cylindrical shape without a notch) can be pinched and contacted by the female terminal 402 of the second unit 400. As a result, when the solenoid valve unit 100 and the thermocouple unit 200 are connected, The degree of freedom is obtained, and the assembling work can be easily performed. The two terminals in the second unit 400 may be surrounded by a connector such as the second connector 206 shown in FIGS. Industrial applicability
以上述べたように、本発明のガス立消え安全装置は、幅狭化、小型化、構造の簡 略化、低コスト化、接続時に互いの角度の自由度の確保等が達成されるため、燃焼 中のガスの炎が不意に立消えしたような場合にガスの通路を遮断するようなシステム であれば、ガスコン口に限らず、ガス湯沸し機、その他のガス機器に適用され得る。  As described above, the gas extinguishing safety device of the present invention achieves narrowing, miniaturization, simplification of the structure, cost reduction, and securing the freedom of the angles at the time of connection. Any system that shuts off the gas passage when the gas flame inside suddenly goes out can be applied to gas heaters and other gas appliances, not limited to gas inlets.

Claims

請求の範囲 The scope of the claims
[1] 感熱部に接続された 2個の端子を備えた熱電対ユニットと、励磁用のコイルに接続 されるものであって前記熱電対ユニットに備えられた前記 2個の端子と個々に接続す る 2個の端子並びに前記コイルへの通電により生じる電磁力により駆動される弁体を 備える電磁弁ユニットと、を備え、  [1] A thermocouple unit having two terminals connected to the thermosensitive part and connected to an exciting coil and individually connected to the two terminals provided in the thermocouple unit An electromagnetic valve unit comprising: a valve body driven by an electromagnetic force generated by energizing the coil;
前記熱電対ユニットに備えられる 2個の端子または前記電磁弁ユニットに備えられ る 2個の端子のいずれか一方が、円筒のすくなくとも円弧状部分を含む筒状雄端子 と、前記筒状雄端子の内側に配置される内側雄端子または内側雌端子のいずれか 一方とから成り、  Either one of the two terminals provided in the thermocouple unit or the two terminals provided in the solenoid valve unit is a cylindrical male terminal including at least a circular arc portion of a cylinder; and Consisting of either the inner male terminal or the inner female terminal arranged inside,
前記熱電対ユニットに保持される 2個の端子または前記電磁弁ユニットに保持され る 2個の端子のいずれか他方が、前記筒状雄端子の壁面の内側と外側のすくなくと も一方側と接続する外側雌端子と、前記筒状雄端子の内側に配置された前記内側 雄端子または前記内側雌端子のいずれか他方の端子とから成る、  The other of the two terminals held by the thermocouple unit or the two terminals held by the solenoid valve unit is connected to at least one of the inner and outer walls of the cylindrical male terminal. An external female terminal, and the other of the internal male terminal and the internal female terminal disposed inside the cylindrical male terminal.
ことを特徴とするガス立消え安全装置。  Gas extinguishing safety device characterized by the following.
[2] 前記内側雌端子は前記内側雄端子を挟持し得る一対のバネ片から成り、前記外側 雌端子は前記筒状雄端子の壁面を内側及び外側から挟持し得る一対のバネ片から 成ることを特徴とする請求項 1記載のガス立消え安全装置。  [2] The inner female terminal is composed of a pair of spring pieces that can clamp the inner male terminal, and the outer female terminal is composed of a pair of spring pieces that can clamp the wall surface of the cylindrical male terminal from inside and outside. 2. The gas extinguishing safety device according to claim 1, wherein:
[3] 前記内側雌端子及び前記外側雌端子は、可撓片をもつように略 V字状に折り曲げ 前記筒状雄端子及び前記内側雄端子は、前記可撓片の橈み方向に略垂直な方 向にお 、て挿脱可能とする、  [3] The inner female terminal and the outer female terminal are bent in a substantially V shape so as to have a flexible piece. The cylindrical male terminal and the inner male terminal are substantially perpendicular to a radius direction of the flexible piece. In a suitable direction,
ことを特徴とする請求項 2記載のガス立消え安全装置。  3. The gas extinguishing safety device according to claim 2, wherein:
[4] 前記筒状雄端子は、その筒状雄端子の内側に備えられる端子よりも長く形成したこ とを特徴とする請求項 1記載のガス立消え安全装置。 4. The gas extinguishing safety device according to claim 1, wherein the cylindrical male terminal is formed longer than a terminal provided inside the cylindrical male terminal.
[5] 前記筒状雄端子の肉厚と前記内側雄端子の外径とは、同一寸法に形成されている ことを特徴とする請求項 1記載のガス立消え安全装置。 5. The gas extinguishing safety device according to claim 1, wherein the thickness of the cylindrical male terminal and the outer diameter of the inner male terminal are formed to have the same dimensions.
[6] 前記熱電対ユニットか前記電磁弁ユニットのいずれか一方に前記内側雌端子と前 記外側雌端子とを備える場合に、その 2個の雌端子を備えるユニットが前記内側雌 端子を保持し前記筒状雄端子の内側に嵌合される嵌合部と、前記嵌合部の外周面 と協働して前記外側雌端子を保持すると共に前記筒状雄端子を外側から挟み込む 挟持片とを含む、 [6] One of the thermocouple unit and the solenoid valve unit is provided with the inner female terminal and When the outer female terminal is provided, a unit including the two female terminals holds the inner female terminal and is fitted inside the cylindrical male terminal; and an outer periphery of the fitting portion. A holding piece for holding the outer female terminal in cooperation with a surface and for holding the cylindrical male terminal from the outside,
ことを特徴とする請求項 1記載のガス立消え安全装置。  The gas extinguishing safety device according to claim 1, wherein:
[7] 前記筒状雄端子は、略同一の肉厚に形成されており、 [7] The cylindrical male terminal is formed to have substantially the same thickness,
前記嵌合部は、前記筒状雄端子に適合するように略円柱状に形成されている、 ことを特徴とする請求項 6記載のガス立消え安全装置。  7. The gas extinguishing safety device according to claim 6, wherein the fitting portion is formed in a substantially columnar shape so as to fit the cylindrical male terminal.
[8] 前記筒状雄端子は、その先端縁部が内側に折り返された折返し部を有し、 [8] The cylindrical male terminal has a folded portion whose tip edge is folded inward,
前記嵌合部は、前記折返し部に掛止される爪部を有する、  The fitting portion has a claw portion hooked on the folded portion,
ことを特徴とする請求項 6に記載のガス立消え安全装置。  7. The gas extinguishing safety device according to claim 6, wherein:
[9] 前記嵌合部は、前記筒状雄端子への嵌合方向に略垂直な方向に弾性変形し得る 変形部を有し、 [9] The fitting portion has a deformable portion that can be elastically deformed in a direction substantially perpendicular to a fitting direction to the cylindrical male terminal,
前記爪部は、前記変形部の先端に形成されている、  The claw portion is formed at a tip of the deformation portion,
ことを特徴とする請求項 8記載のガス立消え安全装置。  9. The gas extinguishing safety device according to claim 8, wherein:
[10] 前記筒状雄端子は、前記電磁弁ユニットを所望の位置に固定するための取り付け フランジを一体的に有する、 [10] The cylindrical male terminal integrally has a mounting flange for fixing the electromagnetic valve unit at a desired position.
ことを特徴とする請求項 1記載のガス立消え安全装置。  The gas extinguishing safety device according to claim 1, wherein:
[11] 前記筒状雄端子は、前記電磁弁ユニットを所望の位置に固定するためのねじ込み キャップを一体的に有する、 [11] The cylindrical male terminal integrally has a screw cap for fixing the electromagnetic valve unit at a desired position.
ことを特徴とする請求項 1記載のガス立消え安全装置。  The gas extinguishing safety device according to claim 1, wherein:
[12] 前記電磁弁ユニットは、前記弁体と一体的に可動な可動鉄心と、前記コイルが卷回 された固定鉄心とを含み、 [12] The solenoid valve unit includes a movable iron core movable integrally with the valve element, and a fixed iron core on which the coil is wound.
前記筒状雄端子は、前記固定鉄心を保持するホルダを一体的に有する、 ことを特徴とする請求項 1記載のガス立消え安全装置。  2. The gas extinguishing safety device according to claim 1, wherein the cylindrical male terminal integrally has a holder that holds the fixed iron core.
[13] 先端に感熱部を有する熱電対ユニットと、前記熱電対ユニットで発生する熱起電力 に基づいて発生する電磁力により駆動される電磁弁ユニットと、を備えたガス立消え 安全装置であって、 前記熱電対ユニットの感熱部は、棒状導体と、前記棒状導体の周りに筒状に配置 されると共に先端が円錐形状に形成されて前記棒状導体に接合される筒状導体と、 を含み、 [13] A gas extinguishing safety device comprising: a thermocouple unit having a thermosensitive portion at a tip; and an electromagnetic valve unit driven by an electromagnetic force generated based on thermoelectromotive force generated by the thermocouple unit. , The heat-sensitive portion of the thermocouple unit includes: a rod-shaped conductor; and a cylindrical conductor that is disposed in a cylindrical shape around the rod-shaped conductor and has a conical tip and is joined to the rod-shaped conductor.
前記筒状導体は、前記棒状導体に接合された先端の温接点部に比べて後端側の 冷接点部が厚肉に形成されて!ヽる、  In the cylindrical conductor, a cold junction portion at a rear end side is formed thicker than a hot junction portion at a front end joined to the rod-shaped conductor.
ことを特徴とするガス立消え安全装置。 Gas extinguishing safety device characterized by the following.
前記棒状導体と前記筒状導体の先端の接合領域には、最も外径が小さ 1、先端細 径部が形成され、  In the joint region between the tip of the rod-shaped conductor and the tip of the cylindrical conductor, an outer diameter 1 is small, and a tip small-diameter portion is formed,
前記先端細径部は、前記温接点部から冷接点部までの距離の約 30— 50パーセン トの長さに形成されている、  The tip small diameter portion is formed to have a length of about 30-50% of a distance from the hot junction to the cold junction.
ことを特徴とする請求項 13記載のガス立消え安全装置。 14. The gas extinguishing safety device according to claim 13, wherein:
PCT/JP2004/014223 2003-09-30 2004-09-29 Pilot safety shut off device for gas WO2005031213A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04788290.7A EP1669673B1 (en) 2003-09-30 2004-09-29 Safety shut off device for gas burner
BRPI0414923-8A BRPI0414923A (en) 2003-09-30 2004-09-29 gas burner safety device
JP2005514245A JP4198156B2 (en) 2003-09-30 2004-09-29 Gas extinguishing safety device

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JP2003339063 2003-09-30
JP2003-339063 2003-09-30

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JP4198156B2 (en) 2008-12-17
BRPI0414923A (en) 2006-11-07
CN100526718C (en) 2009-08-12
CN1860332A (en) 2006-11-08
EP1669673A4 (en) 2012-02-01
EP1669673A1 (en) 2006-06-14
JPWO2005031213A1 (en) 2008-06-12
EP1669673B1 (en) 2016-06-22

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