CN110474172B - Connection structure of electronic equipment - Google Patents
Connection structure of electronic equipment Download PDFInfo
- Publication number
- CN110474172B CN110474172B CN201811579770.0A CN201811579770A CN110474172B CN 110474172 B CN110474172 B CN 110474172B CN 201811579770 A CN201811579770 A CN 201811579770A CN 110474172 B CN110474172 B CN 110474172B
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- Prior art keywords
- wire
- contact
- wire insertion
- electric wire
- insertion space
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- 238000003780 insertion Methods 0.000 claims abstract description 91
- 230000037431 insertion Effects 0.000 claims abstract description 91
- 238000000926 separation method Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/14—Terminal arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
- H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-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
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-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
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
- H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
- H01R4/4821—Single-blade spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-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
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/4846—Busbar details
- H01R4/485—Single busbar common to multiple springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5844—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-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
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/484—Spring housing details
- H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention provides a connection structure of an electronic device, which prevents poor conduction and falling off of an electric wire elastically held between the front end of an electric wire holding part and a contact part for a long time. The method comprises the following steps: a housing (5) provided with a wire insertion space (10a) and a wire insertion port (12a) into which a power supply wire (W1) is inserted; a fixed contact (15) having a contact portion (15d) provided along a direction in which the electric wire is inserted into the electric wire insertion space; and an elastic member (21) for pressing the electric wire to the contact portion by an elastic force. The elastic member includes: a flat plate-shaped fixed portion (22) fixed to the fixed contact; curved portions (25a, 25b) formed continuously from the fixing portion and having an arc shape; flat plate-like wire holding portions (26a, 26b) formed continuously from the bent portion; and a centering section (27) in which the wire (W1) which is brought into contact with the longitudinal front end of the wire holding section and pushed to the contact section is positioned at the widthwise center position of the front end.
Description
Technical Field
The present invention relates to a connection structure for an electronic device such as an electromagnetic contactor that elastically holds an electric wire.
Background
In recent years, spring terminals equipped with an elastic member for elastically holding an electric wire have been used in electronic devices such as electromagnetic contactors (for example, patent document 1).
The spring terminal of patent document 1 includes: an electric wire insertion space provided in the electronic apparatus case; a wire insertion opening provided in the housing communicating with the wire insertion space; a fixed contact disposed in the housing, a contact portion of which is electrically connectable to the electric wire inserted through the electric wire insertion space from the electric wire insertion port; and an elastic member disposed in the wire insertion space and configured to press the wire inserted through the wire insertion opening to the contact portion side by an elastic force.
The elastic member is formed by bending a metal plate, and is composed of: a flat plate-shaped fixing portion; and a flat plate-like wire holding portion formed by a curved portion curved in an arc shape from an end portion of the fixing portion.
The elastic member is configured in the following manner: the fixing portion is fixed in the housing, and the wire holding portion is stretched over the vicinity of the opening of the wire insertion port in the housing, and the tip thereof is opposed to the contact portion of the fixed contact.
After the electric wire inserted from the electric wire insertion opening enters between the contact portion of the fixed contact and the electric wire holding portion of the elastic member, the tip of the electric wire holding portion presses the electric wire toward the contact portion side by the elastic force generated by the elastic deformation of the bent portion, and elastically holds the electric wire.
Patent document
Patent document 1: japanese patent No. 5539809
Disclosure of Invention
Problems to be solved by the invention
In the elastic member constituting the spring terminal of patent document 1, the tip of the wire holding portion that is in contact with the wire is formed as a flat surface.
However, in the electric wire elastically held between the tip of the wire holding portion and the contact portion, since the tip of the wire holding portion is a flat surface, the electric wire gradually moves toward the lateral end portion of the wire holding portion due to long-term use or vibration of the electric wire, and there is a possibility that poor conduction and falling-off of the electric wire occur.
Therefore, an object of the present invention is to provide a connection structure for an electronic device, which can prevent a poor conduction of an electric wire elastically held between a tip of an electric wire holding portion and a contact portion and a drop-off of the electric wire for a long period of time.
Means for solving the problems
In order to achieve the above object, an electronic device connection structure according to an aspect of the present invention includes: a housing having a wire insertion space therein and a wire insertion port through which a power supply wire is inserted into the wire insertion space from the outside; a fixed contact, a contact portion of which is provided along a direction in which the electric wire is inserted into the electric wire insertion space, being capable of being electrically connected with the electric wire; and an elastic member disposed in the wire insertion space and configured to press the wire inserted from the wire insertion opening to the contact portion by an elastic force, the elastic member including: a flat plate-shaped fixing portion fixed to the fixed contact; a curved portion formed continuously from the fixing portion and having an arc shape; a flat plate-like wire holding portion formed continuously from the bent portion; and a centering section that positions the electric wire, which is in contact with the longitudinal front end of the electric wire holding section and is pressed against the contact section, at a center position in the width direction of the front end.
Effects of the invention
According to the connection structure of the electronic device of the present invention, it is possible to prevent the electric wire elastically held between the tip of the electric wire holding portion and the contact portion from being poor in electric conduction and falling off for a long period of time.
Drawings
Fig. 1 is a perspective view showing an electromagnetic contactor according to embodiment 1 of the present invention.
Fig. 2 is a plan view showing an electromagnetic contactor according to embodiment 1.
Fig. 3 is a plan view of the electromagnetic contactor according to embodiment 1 with a case cover removed.
Fig. 4 is a line-ii view of fig. 2.
Fig. 5 is a diagram showing a spring terminal disposed in the electric wire insertion space according to embodiment 1.
Fig. 6 is a diagram showing an elastic member constituting the spring terminal according to embodiment 1.
Fig. 7 is a diagram showing a state in which the divided wire holding portion constituting the elastic member of embodiment 1 elastically holds the electric wire by pressing the electric wire against the contact portion.
Fig. 8 is a diagram showing a state in which the divided wire holding portion of embodiment 2 of the present invention elastically holds the electric wire by pressing the electric wire against the contact portion.
Fig. 9 is a plan view of the wire retaining wall inserted between the pair of divided wire holding portions according to embodiment 3 of the present invention.
Fig. 10 is a perspective view showing a state in which the wire separation preventing wall is fitted between a pair of divided wire holding portions according to embodiment 3 of the present invention.
Detailed Description
Embodiments 1 to 3 of the present invention will be described below with reference to the drawings. In the drawings below, the same or similar parts are denoted by the same or similar symbols. It should be noted that the drawings are only schematic, and the relationship between the thickness and the plane size, the ratio of the thickness of each layer, and the like are not the same as the actual ones. Therefore, specific thickness and size should be determined with reference to the following description. It is to be noted that the drawings naturally include portions having different dimensional relationships and ratios from one another.
The following embodiments 1 to 3 are apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention is not limited to the following materials, shapes, structures, arrangements, and the like of the constituent members. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.
In fig. 1 to 5 and 9, the symbol X denotes a1 st direction, the symbol Y denotes a2 nd direction orthogonal to the 1 st direction, and the symbol Z denotes a 3 rd direction orthogonal to a virtual plane including the 1 st direction X and the 2 nd direction Y.
[ embodiment 1 ]
Fig. 1 to 7 show an electromagnetic contactor 1 according to embodiment 1 of the present invention for opening and closing an electric circuit between a power source on one side and a load on the other side.
The electromagnetic contactor 1 includes: a housing 2 (see fig. 1); a contact mechanism 3 (see fig. 3) housed in the housing 2; and an electromagnet unit 4 (see fig. 4) housed in the case 2 and driving the contact mechanism 3.
As shown in fig. 1 and 4, the housing 2 includes: a case body 5 having a bottomed rectangular parallelepiped shape and having an opening formed in one of the 3 rd direction Z; and a case cover 6 detachably attached to the case main body 5 so as to cover the opening.
As shown in fig. 4, is formed in the housing main body 5; the contact mechanism housing portion 7 and the electromagnet unit housing portion 8 of the contact mechanism 3 are housed in the central portion, the contact mechanism 3 is housed in the contact mechanism housing portion 7, and the electromagnet unit 4 is housed in the electromagnet unit housing portion 8.
A plurality of pairs of wire insertion spaces 10a to 10e are formed by both sides (see fig. 3) in the 1 st direction X of the contact mechanism housing 7 sandwiching the housing body 5 and the housing cover 6 covering the upper opening of the housing body 5, and a partition wall 11 is provided between the adjacent wire insertion spaces 10a to 10 e.
As shown in fig. 4, the front plate 6a of the case cover 6 is provided with a pair of wire insertion ports 12a that communicate with the pair of wire insertion spaces 10 a.
As shown in fig. 2, in the pair of wire insertion ports 12a, two wire insertion ports 12a1, 12a2 are provided toward the wire insertion space 10 a.
Further, a plurality of pairs of wire insertion ports 12b to 12e are formed in the front plate 6a of the case cover 6 so as to be aligned with the pair of wire insertion ports 12a in the 2 nd direction Y, and these pairs of wire insertion ports 12b to 12e communicate the outside of the case cover 6 with the pair of wire insertion spaces 10b to 10 e. These pairs of wire insertion ports 12b to 12 are also provided with two wire insertion ports toward the wire insertion spaces 10b to 10e, respectively.
In the electromagnetic contactor according to embodiment 1, 6 pairs of the wire insertion ports 12a to 12c among the pairs of the wire insertion ports 12a to 12e are used as main circuit terminals, the pair of the wire insertion ports 12d are used as auxiliary terminals, and the pair of the wire insertion ports 12e are used as coil terminals of the electromagnet unit 4.
As shown in fig. 1, 2, and 4, insertion holes 13 through which a press release tool is inserted are formed in the front plate 6a of the case cover 6 in the vicinity of the pairs of wire insertion ports 12b to 12e so as to communicate with the wire insertion spaces 10a to 10 e. The insertion hole 13 is formed corresponding to two of the plurality of pairs of wire insertion ports 12a to 12 e.
On the other hand, as shown in fig. 3, the contact mechanism 3 includes: a plurality of pairs of fixed contacts 15 separated in the 1 st direction X and fixed to the housing main body 5; and a plurality of movable contacts 16 capable of contacting each pair of the fixed contacts 15.
The plurality of movable contacts 16 are fixed to a movable contact support member 17 extending in an elongated shape in the 2 nd direction Y at predetermined intervals along the 1 st direction. When the coil of the electromagnet unit 4 is excited, the movable contact support member 17 moves downward in fig. 3 by a drive lever, not shown, and the plurality of movable contacts 16 fixed to the movable contact support member 17 are brought into contact with the respective pairs of fixed contacts 15. Thereby, the fixed contact 15 on one side in the 1 st direction X and the fixed contact 15 on the other side in the 1 st direction X are electrically connected to each other via the movable contact 16, and the electric circuit is closed.
On the other hand, if the coil of the electromagnet unit 4 is in the non-excited state, the movable contact support member 17 moves upward in fig. 3 by the action of a return spring, not shown, and the plurality of movable contacts 16 fixed to the movable contact support member 17 are separated from the respective pairs of fixed contacts 15. Thereby, the fixed contact 15 in one of the 1 st directions X is disconnected from the fixed contact 15 in the other of the 1 st directions X.
As shown in fig. 4, spring terminals 20 for connecting wires W to be described later to the fixed contacts 15 are disposed in the pair of wire insertion spaces 10a provided in the housing main body 5.
As shown in fig. 5, the electric wire W includes: a core wire W1 having a circular cross section and composed of a plurality of metal wire rods, and an insulating coating W2 covering the outer periphery of the core wire W1. When the electric wire W is connected to the fixed contact 15, the tip of the insulating coating W2 is removed, and only a predetermined portion of the core wire W1 is exposed.
The structure of the fixed contact 15 will be described with reference to fig. 3 and 5.
The fixed contact 15 includes: a flat plate-shaped fixed contact portion 15a with which the movable contact 16 is in contact; a flat plate-shaped substrate portion 15b bent in a direction extending in the 3 rd direction Z; a flat plate-like base plate portion 15c bent from the substrate portion 15b in a direction extending in the 1 st direction X; and a flat plate-like contact portion 15d bent from the base plate portion 15c in parallel with the substrate 15b in a direction extending in the 3 rd direction Z. The fixed contact 15 is formed by punching and bending a metal plate.
As shown in fig. 3, the fixed contact 15 provided in the wire insertion space 10a has a fixed contact portion 15a located inside the contact mechanism housing portion 7, and the base plate portion 15b, the base plate portion 15c, and the contact portion 15d are fixed to the housing main body 5 in a state of being along the inner wall of the housing main body 5 forming the wire insertion space 10 a.
Similarly, the fixed contacts 15 provided in the other pairs of wire insertion spaces 10b to 10e have the fixed contact portion 15a located in the contact mechanism housing portion 7, and the substrate portion 15b, the base plate portion 15c, and the contact portion 15d fixed to the housing main body 5 so as to be located in the wire insertion spaces 10b to 10 e.
As shown in fig. 5, the engagement claw 18 is formed so as to protrude from the inner wall of the base plate portion 15b of the fixed contact 15.
An insertion hole 19 is formed in the base plate portion 15c at a position close to the substrate portion 15b of the fixed contact 15.
Here, as shown in fig. 5, the spring terminal 20 described above is composed of the elastic member 21 and the contact portion 15d of the fixed contact 15.
As shown in fig. 6, the elastic member 21 is a member made of a long flat metal plate, and includes: a flat plate-like fixing portion 22; a flat plate-like inclined portion 24 continuous with the first bent portion 23 of the obtuse-angle shape provided between the first bent portion and the longitudinal end of the fixing portion 22; and a flat plate-like wire holding portion 26 provided with an arc-shaped 2 nd bent portion 25 between the inclined portion 24 and the wire holding portion and extending in substantially the same direction as the inclined portion 24.
In the elastic member 21, a slit SL is formed in the center portion in the width direction between the wire holding portion 26 and the 2 nd bent portion 25, the 2 nd bent portion 25 is divided into two divided into the 2 nd bent portions 25a and 25b, and the wire holding portion 26 is also divided into two divided wire holding portions 26a and 26 b.
Here, at the distal ends of the divided wire holding portions 26a, 26b, centering portions 27 are formed which are cut in an arc shape with a predetermined radius R so that the widthwise center is recessed deepest.
Further, an insertion convex portion 28 is formed at the lower end of the fixing portion 22 of the elastic member 21, and an engagement through hole 29 is formed in the fixing portion 22.
As shown in fig. 5, the fixing portion 22 of the elastic member 21 is disposed along the substrate portion 15b of the fixed contact 15 disposed in one of the pair of electric wire insertion spaces 10a, the fitting convex portion 28 at the lower end of the fixing portion 22 is fitted into the fitting hole 19 of the substrate portion 15b, and the elastic member 21 and the fixed contact 15 are coupled in a state where the engaging claw 18 of the substrate portion 15b enters the engaging through hole 29 of the fixing portion 22.
The elastic member 21 is also coupled to the fixed contact 15 disposed in the other of the pair of wire insertion spaces 10a in the same configuration, and the elastic member 21 is also coupled to the fixed contacts 15 disposed in the other of the plurality of pairs of wire insertion spaces 10b to 10e in the same configuration.
When the case cover 6 is attached to the case main body 5, the divided wire holding portion 26a of the elastic member 21 disposed in the plurality of pairs of wire insertion spaces 10a of the case main body 5 is disposed at a position facing one of the two wire insertion ports 12a1, 12a2 constituting the wire insertion port 12a shown in fig. 2. The divided wire holding portion 26b of the elastic member 21 is disposed at a position facing the other of the two wire insertion ports 12a1, 12a 2. The divided wire holding portions 26a and 26b are also similarly disposed at positions facing the two wire insertion ports constituting the other pairs of wire insertion ports 12b to 12 e.
As shown in fig. 5, the core wire W1 of the electric wire W inserted into the electric wire insertion space 10a from one of the electric wire insertion openings 12a1 of the electric wire insertion openings 12a is elastically held between the leading end of the divided electric wire holding portion 26a of the elastic member 21 and the contact portion 15d of the fixed contact 15. The electric wire W inserted into the electric wire insertion space 10a from the other electric wire insertion port 12a2 of the electric wire insertion port 12a and the core wire W1 of the electric wire W inserted into the other pair of electric wire insertion ports 12b to 12e are also elastically held between the distal ends of the divided electric wire holding portions 26a and 26b of the elastic member 21 and the contact portion 15d of the fixed contact 15, which are not shown in the drawings.
The electric wire described in the present invention corresponds to the core wire W1.
Here, as shown by reference numerals W1a and W1b in fig. 7, the operation when the core wire elastically held between the tip of the divided wire holding portion 26a and the contact portion 15d is held close to the width-direction edge of the divided wire holding portion 26a will be described. As described above, even if the core wires W1a, W1b are located on the width direction end portion side of the divided wire holding portion 26a, the centering portion 27 is formed at the tip of the divided wire holding portion 26a, and the core wires W1a, W1b move to the width direction center position (the position of the core wire W1) along the arc-shaped notch recessed deepest in the width direction center.
Next, the operation and effects of the electromagnetic contactor 1 according to embodiment 1 will be described. Here, since the spring terminal 20 (the elastic member 21 and the contact portion 15d of the fixed contact 15) is disposed in the plurality of pairs of wire insertion spaces 10a to 10b, the operational effect of the spring terminal 20 disposed in one of the pair of wire insertion spaces 10a will be described below.
In the electromagnetic contactor 1 according to embodiment 1, even if the core wire elastically held between the tip of the divided wire holding portion 26a and the contact portion 15d is held near the width-direction edge of the divided wire holding portion 26a, as shown by reference numerals W1a and W1b in fig. 7, for example, the central portion 27 is formed at the tip of the divided wire holding portion 26a, and the core wires W1a and W1b move to the width-direction central position of the tip (the position of the core wire W1) along the arc-shaped notch where the width-direction central recess is deepest.
Therefore, in the electromagnetic contactor 1 according to embodiment 1, since the centering portion 27 is formed in the divided wire holding portion 26a, the core wire W1 can be prevented from moving to the end portion side in the width direction of the divided wire holding portion 26a, and the wire W does not fall off or lead a failure.
[ 2 nd embodiment ]
Next, fig. 8 shows a main part of an elastic member 21 according to embodiment 2 of an electromagnetic contactor 1 according to the present invention. In the elastic member 21 according to embodiment 2, the shape of the centering portion 30 formed at the tip of the divided wire holding portion 26a is different from the centering portion 27 formed in the divided wire holding portion 26a of the elastic member 21 shown in fig. 6.
That is, the two flat inclined surfaces 30a and 30b of the centering portion 30 formed at the tip of the divided wire holding portion 26a of embodiment 2 intersect at the center in the width direction so as to be recessed deepest at the center in the width direction, thereby forming a V-shape. A centering portion 30 having the same shape is also formed at the tip of the divided wire holding portion 26b of the elastic member 21.
As shown by reference numerals W1a and W1b in fig. 8, even if the core wires of the wires W are located on the width direction end portions of the divided wire holding portions 26a, the center portions 30 are formed at the front ends of the divided wire holding portions 26a, the core wires W1a move to the width direction center position (the position of the core wire W1) along the inclined surfaces 30a, and the core wires W1b move to the width direction center position along the inclined surfaces 30 b.
Therefore, the intermediate portion 30 is formed at the distal ends of the divided wire holding portions 26a, 26b, and the core wire W1 near the widthwise edges of the divided wire holding portions 26a, 26b moves to the widthwise central position along the inclined surfaces 30a, 30b, so that poor conduction and wire W falling are not caused.
[ 3 rd embodiment ]
Next, fig. 9 and 10 show the spring terminal 20 (the elastic member 21, the contact portion 15d of the fixed contact 15) disposed in the wire insertion space 10a of the electromagnetic contactor 1 according to embodiment 3 of the present invention. However, in embodiment 3 as well, since the spring terminal 20 is disposed in the other of the pair of wire insertion spaces 10a and the plurality of pairs of wire insertion spaces 10b to 10e in the same manner, only the configuration and operational effects of the spring terminal 20 disposed in the wire insertion space 10a of embodiment 3 will be described.
The distal ends of the pair of divided wire holding portions 26a, 26b of the elastic member 21 disposed in the wire insertion space 10a are formed as flat surfaces 31a, 31b, the widthwise outer surface 26a1 of the divided wire holding portion 26a is disposed along the wall portion 6b, and the widthwise outer surface 26b1 of the divided wire holding portion 26b is disposed along the wall portion 6 d.
As shown in fig. 9 and 10, the wire escape preventing wall 32 projects from the housing cover 6 toward the wire insertion space 10 a.
The wire separation preventing wall 32 is fitted into the engaging groove 15d1 formed in the contact portion 15d, and enters the slit SL provided between the pair of divided wire holding portions 26a and 26b of the elastic member 21.
The pair of bent portions in the present invention correspond to the pair of divided bent portions 2a and 25b, and the pair of wire holding portions in the present invention correspond to the pair of divided wire holding portions 26a and 26 b.
Next, the operation and effect of embodiment 3 will be described.
As shown in fig. 9, even if the core wire W1 of the wire W that is in contact with the tip 31b of the divided wire holding section 26b and is pressed toward the contact section 15d moves in the direction of the arrow, there is no space for the core wire W1 to fall off on the side surfaces (the side surface on the slot SL side and the outer side surface 26b1) in the width direction of the divided wire holding section 26b, and therefore, poor conduction and falling off of the wire W do not occur.
In addition, although not shown in the drawings, even if the core wire W1 of the wire W that is in contact with the tip 31a of the divided wire holding section 26a and is pressed toward the contact section 15d moves along the contact section, there is no space for the core wire W1 to fall off on the side surfaces (the side surface on the side of the slit SL and the outer side surface 26a1) in the width direction of the divided wire holding section 26b, and therefore, poor conduction and falling off of the wire W do not occur.
Although the connection structure of the electromagnetic contactor 1 is described in embodiments 1 to 3, the same effects can be obtained even when the connection structure is used for connection structures of various electronic devices such as a wiring breaker, an electromagnetic switch, and a circuit protector.
Description of the reference numerals
1 electromagnetic contactor
2 casing
3 contact mechanism
4 electromagnet unit
5 casing body
6 casing lid
6a front panel
7 contact mechanism storage part
8 electromagnet unit housing part
10 a-10 e wire insertion space
11 bulkhead
12 a-12 e wire insertion port
12a1, 12a2 wire insertion opening
13 through hole
15 fixed contact
15a fixed contact part
15b substrate part
15c base plate part
15d contact part
15d1 clamping groove
17 movable contact supporting member
18 clamping claw
19 insert hole
20 spring terminal
21 elastic member
22 fixed part
23 st bend
24 inclined part
25 nd 2 nd bend
26 electric wire holding part
25a, 25b divide the 2 nd bend
26a, 26b divided wire holding part
27 centering section
28 fitting into the convex part
29 engaging through hole
30 centering part
30a, 30b inclined surface
31a, 31b flat surfaces
32 wire anti-drop wall
X1 st direction
Y2 nd direction
Z3 rd direction
SL slot
W wire
W1 core wire
W2 is insulated and coated.
Claims (4)
1. A connection structure of an electronic device, comprising:
a housing having a wire insertion space therein and a wire insertion port through which a power supply wire is inserted into the wire insertion space from the outside;
a fixed contact, a contact portion of which is provided along a direction in which the electric wire is inserted into the electric wire insertion space, being capable of being electrically connected to the electric wire; and
an elastic member disposed in the wire insertion space and configured to press the wire inserted from the wire insertion opening to the contact portion by an elastic force,
the elastic member includes:
a flat plate-shaped fixing portion fixed to the fixed contact at a position facing the contact portion;
a first bent portion bent at an obtuse angle from the fixing portion to a direction opposite to the contact portion;
a first inclined portion continuous from the first curved portion;
a second curved portion curved in an arc shape from the first inclined portion to the contact portion side;
a second inclined portion extending continuously from the second curved portion and substantially parallel to the first inclined portion;
a third curved portion that curves from the second inclined portion to the first inclined portion side;
a third inclined portion that is continuous from the third curved portion and extends toward the contact portion on the first inclined portion side with respect to the second inclined portion; and
and a centering portion that positions the electric wire, which is in contact with a longitudinal front end of the third inclined portion and is pressed against the contact portion, at a center position in a width direction of the front end.
2. The connection structure of electronic equipment according to claim 1, characterized in that:
the centering portion is formed by cutting the tip of the third inclined portion into an arc shape having a predetermined radius R so that a center in a width direction is recessed deepest.
3. The connection structure of electronic equipment according to claim 1, characterized in that:
the centering portion is formed by cutting the tip of the third inclined portion into a V shape so that the center in the width direction is recessed deepest.
4. A connection structure of an electronic device, comprising:
a housing having a wire insertion space therein and a wire insertion port through which a power supply wire is inserted into the wire insertion space from the outside;
a fixed contact, a contact portion of which is provided along a direction in which the electric wire is inserted into the electric wire insertion space, being capable of being electrically connected to the electric wire; and
an elastic member disposed in the wire insertion space and configured to press the wire inserted from the wire insertion opening to the contact portion by an elastic force,
the elastic member includes:
a flat plate-shaped fixed portion fixed to the fixed contact;
a pair of arcuate bent portions formed continuously from the fixing portion and extending in parallel to each other in a longitudinal direction with a slit provided therebetween; and
a pair of wire holding portions that hold the wires at the distal ends in the longitudinal direction, the slit extending continuously between the pair of wire holding portions, the pair of wire holding portions extending continuously from the pair of bent portions in parallel with each other across the slit,
the housing is provided with a wire separation prevention wall that protrudes toward the slit between the pair of wire holding portions and is disposed along an inner surface of the pair of wire holding portions in the width direction on the slit side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-090577 | 2018-05-09 | ||
| JP2018090577A JP6638759B2 (en) | 2018-05-09 | 2018-05-09 | Connection structure of electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110474172A CN110474172A (en) | 2019-11-19 |
| CN110474172B true CN110474172B (en) | 2021-03-12 |
Family
ID=68336694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811579770.0A Active CN110474172B (en) | 2018-05-09 | 2018-12-24 | Connection structure of electronic equipment |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6638759B2 (en) |
| CN (1) | CN110474172B (en) |
| DE (1) | DE102018133604A1 (en) |
| FR (1) | FR3081084B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114303216A (en) * | 2020-03-19 | 2022-04-08 | 富士电机机器制御株式会社 | Attachment for electrical equipment, electrical equipment to which the attachment can be attached, and electrical equipment having the attachment |
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|---|---|---|---|---|
| CN1118202A (en) * | 1993-11-18 | 1996-03-06 | 惠特克公司 | Transversal connector for electric wire and cable applications |
| CN1135809A (en) * | 1994-09-23 | 1996-11-13 | 艾伯特阿克曼公司 | Terminal for electrical installations |
| EP0867973A1 (en) * | 1997-03-28 | 1998-09-30 | Entrelec Sa | Electric connectour arrangement and modul in particular connection modul comprising such a connector arrangement |
| CN1988263A (en) * | 2005-10-24 | 2007-06-27 | 蒂科电子奥地利有限责任公司 | Electrical device, particularly relay socket, with spring clip and method of manufacture |
| CN102354831A (en) * | 2011-08-15 | 2012-02-15 | 浙江正泰建筑电器有限公司 | Binding post apparatus without screw thread |
| CN103001013A (en) * | 2011-09-08 | 2013-03-27 | 欧姆龙株式会社 | Conductor connection tool and relay unit using the same |
| CN105591212A (en) * | 2014-11-11 | 2016-05-18 | Smk株式会社 | Structure of socket contact |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2872493B2 (en) * | 1992-07-17 | 1999-03-17 | 東芝テック株式会社 | Lock terminal fittings |
| JP2017204415A (en) * | 2016-05-12 | 2017-11-16 | パナソニックＩｐマネジメント株式会社 | Terminal device and wiring accessory including the same |
-
2018
- 2018-05-09 JP JP2018090577A patent/JP6638759B2/en active Active
- 2018-12-24 CN CN201811579770.0A patent/CN110474172B/en active Active
- 2018-12-27 DE DE102018133604.7A patent/DE102018133604A1/en active Pending
- 2018-12-27 FR FR1874200A patent/FR3081084B1/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118202A (en) * | 1993-11-18 | 1996-03-06 | 惠特克公司 | Transversal connector for electric wire and cable applications |
| CN1135809A (en) * | 1994-09-23 | 1996-11-13 | 艾伯特阿克曼公司 | Terminal for electrical installations |
| EP0867973A1 (en) * | 1997-03-28 | 1998-09-30 | Entrelec Sa | Electric connectour arrangement and modul in particular connection modul comprising such a connector arrangement |
| CN1988263A (en) * | 2005-10-24 | 2007-06-27 | 蒂科电子奥地利有限责任公司 | Electrical device, particularly relay socket, with spring clip and method of manufacture |
| CN102354831A (en) * | 2011-08-15 | 2012-02-15 | 浙江正泰建筑电器有限公司 | Binding post apparatus without screw thread |
| CN103001013A (en) * | 2011-09-08 | 2013-03-27 | 欧姆龙株式会社 | Conductor connection tool and relay unit using the same |
| CN105591212A (en) * | 2014-11-11 | 2016-05-18 | Smk株式会社 | Structure of socket contact |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3081084A1 (en) | 2019-11-15 |
| CN110474172A (en) | 2019-11-19 |
| DE102018133604A1 (en) | 2019-11-14 |
| JP2019197644A (en) | 2019-11-14 |
| FR3081084B1 (en) | 2021-07-16 |
| JP6638759B2 (en) | 2020-01-29 |
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Address after: Saitama Prefecture, Japan Patentee after: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Address before: Tokyo, Japan Patentee before: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. |
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