JP3853779B2 - Internal protector for hermetic electric compressor - Google Patents

Description

  The present invention relates to a protective device for a hermetic electric compressor, and more particularly, to an internal protector that is integrally attached to a fusite pin of a hermetic electric compressor.

  When an abnormal state such as overload operation or refrigerant gas leakage operation occurs in a hermetic electric compressor, a protector is used to protect the electric compressor by detecting the overcurrent flowing to the motor and the ambient temperature. Yes. The protector includes a bimetal switch that senses an overcurrent and an abnormal temperature of the atmosphere. When an abnormal state of the electric compressor is sensed, the protector opens a contact of the bimetal switch to shut off the circuit and protect the motor from burning.

  The fusing pin (C: common terminal, M: main winding terminal, S: auxiliary winding terminal) attached to the upper part of the shell of the electric compressor is welded with a connecting tab terminal by a compressor manufacturer. Motor windings and internal protectors are connected via terminals. However, recently, attention has been paid to reducing material costs and work costs by removing the connection tab terminals and using an integrated protector including the connection tabs. If an integrated protector is used, it can be attached to the fusing pin by a single operation.

  In addition to protection by a protector, an IBPS (Integral Backup Protection System) with a fuse function that instantaneously cuts off an abnormal current several tens of times the rated current that flows when a bimetal switch contact is welded or a motor winding is short-circuited is used. It is done. In this case, the fuse element is connected in series with the bimetal switch, and is installed in the electric compressor together with the protector.

  Patent Document 1 discloses a protection device in which a protector and a fuse element connected in series to the protector are attached to a cluster block, and the cluster block is connected to a lead pin or a fuse pin in an electric compressor.

US Pat. No. 5,903,418

  However, the conventional protection device has the following problems. Since the protective device shown in Patent Document 1 has a structure in which all of the protector, the fuse, and the terminal are attached to the cluster block, the structure inside the electric compressor, particularly the arrangement, direction, and space around the fusite pin are different. And the cluster block must be designed accordingly. In particular, when the mounting space is limited due to the miniaturization of the electric compressor, the mounting position and mounting direction of the protector are likely to be restricted. In this case, each company must have a protection device, and there is a problem that an inexpensive product cannot be provided.

An object of the present invention is to provide a protection device for an electric compressor that solves the above-described conventional problems and can reduce the cost.
Another object of the present invention is to provide a protective device for an electric compressor that can be made thin and compact.

  The protection device attached to the electric compressor according to the present invention includes a top surface, a bottom surface, a side surface connecting the top surface and the bottom surface, and a plurality of at least first and second connection terminals are inserted into the first side surface. A housing made of an insulating material in which an opening is formed and a plurality of openings are formed on a second side surface opposite to the first side surface, and a first and a second electrically connected to a thermally responsive switch housed therein A protector having two external terminals, one end portion, the other end portion, and a fuse portion between the one end portion and the other end portion, one end portion being connected to the first external terminal of the protector and the other end portion being Holding the protector so that a part of the protector is exposed; a fuse terminal made of a conductive metal connected to the connection terminal 1; a connection terminal electrically connected to the second external terminal of the protector; And the first outside of the protector And a holding member made of an insulating material that holds the fuse terminal having one end connected to the child, and when the holding member is attached to the second side surface of the housing, the other end of the fuse terminal is the second Inserted into one opening on the side surface and connected to the first connection terminal in the opening, and the connection terminal connected to the second external terminal of the protector is inserted into the other opening on the second side surface and A second connection terminal is connected in the opening.

  Preferably, the plurality of openings formed in the first side surface are separated from each other by the partition wall and extend in parallel toward the inside of the housing, and some of the plurality of openings formed in the second side surface are the first ones. Communicate with some of the side openings.

  Preferably, a plurality of through holes are formed in the bottom surface of the housing, and the plurality of through holes communicate with corresponding ones of the plurality of openings on the first side surface. Also, a welding opening is formed on the upper surface of the housing, and the other end of the first connection terminal inserted from the first side opening and the fuse terminal inserted from the second side opening is the welding opening. It is welded through. Thereby, assembly can be performed efficiently.

  Preferably, an opening is formed on the upper surface of the housing, and the fuse portion of the fuse terminal inserted from the opening on the second side surface is exposed through the opening. By fusing the fuse portion, fusing is performed at a desired temperature.

  Preferably, the holding member has a protector holding part that covers a part of the outer periphery of the protector and a fuse terminal holding part connected to the protector holding part, and the fuse terminal holding part includes a cut along the longitudinal direction thereof. The fuse terminal is inserted into the notch, and the fuse holding part has an exposure opening for exposing the fuse part.

  Preferably, the protector includes a metal container that is open on one side for housing the heat responsive switch, and a header that is electrically insulated from the metal container and attached to the open surface of the metal container, and the first switch terminal of the heat responsive switch. Is electrically connected to the first external terminal attached to the header, the second switch terminal of the thermally responsive switch is electrically connected to the metal container, and the metal container constitutes the second external terminal.

  Preferably, the top and bottom surfaces of the housing are flat and parallel to each other, and the thickness of the housing is substantially defined by the first and second side openings. By making the housing surface flat and parallel, it becomes easy to handle, and by making the thickness in accordance with the opening, the housing can be made thin, so that it can be installed in a very limited space.

  The protection device of the present invention is provided with a holding member for holding the protector and the fuse terminal separately from the housing, and each can be designed individually, so that it is flexible even if the specifications of the electric compressor are different. Can deal with. For example, when the installation space inside multiple electric compressors is different, using a common housing and changing the design of the holding member can save labor and time compared to designing all the protective devices. As a result, the cost can be reduced. Alternatively, on the contrary, the holding member may be made common and the design of the housing may be changed. Further, by holding the fuse terminal by the holding member, it is possible to make only the holding member a material having high heat resistance and to make the housing a heat-resistant material that is less expensive than the holding member. Further, since the connection terminal and the holding member are attached through the openings on the first and second side surfaces of the housing, a thin protection device can be obtained in a plan view, and the installation space for the protection device can be reduced. it can.

  The protection device according to the present invention is preferably installed inside a hermetic electric compressor used in a freezer or an air conditioner, and protects the motor from burning during overload operation or restraint operation of the motor. Embodiments will be described below with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of attachment of a protection device according to an embodiment of the present invention. The hermetic electric compressor 10 accommodates an electric motor (motor) and a compressor inside a shell (outer shell) 12, and the shell is filled with a refrigerant gas for heat exchange. At the top of the shell 12, a fusite pin 14 or a lead pin sealed with glass is provided. The fuse pin 14 functions as an interface for supplying electric power from the outside to the internal motor. 2A is a perspective view of the fusite pin when viewed from the outside of the shell 12, and FIG. 2B is a plan view of the fusite pin when viewed from the inside of the shell. A common terminal C, a starting winding terminal S, and a main winding terminal M are allocated to the fusing pin 14, respectively.

  As shown in FIG. 1, the protection device 1 according to the present embodiment is attached to a fusite pin 14 inside a shell 12. Preferably, the upper surface of the housing of the protection device 1 is in contact with the outer periphery of the flange 14a to which the fusite pin is attached, and the inside of the flange is sealed so that dust, dust, or the like does not adhere to the periphery of the fusite pin 14. Around the fusing pin 14, the discharge pipe 16 for sending the refrigerant gas to the heat exchanger and the winding 18 of the electric motor are dense, and the protection device 1 must be arranged in a limited space. For this reason, the protective device 1 is designed in a thin and compact configuration.

  FIGS. 3 to 6 are perspective views showing the structure when the protective device 1 of the present embodiment is disassembled, and FIGS. 3 and 4 are perspective views as seen from above and below from the direction in which the holding member is inserted. 5 and 6 are perspective views seen from above and below from the direction in which the connection terminal is inserted.

  The protection device 1 includes a housing 20, an IBPS holding member 50 that holds the protector 30 and the fuse terminal 40, three connection terminals 60, 70, and 80, a connection terminal 90 that is welded to the protector 30, and a connection terminal. The connection terminal 100 connected to 90 is included.

  7A is a view showing the second side surface of the housing, FIG. 7B is a top view, FIG. 7C is a bottom view, and FIG. 7D is a view showing the first side surface. 8A is a cross-sectional view taken along line Y1-Y1, Y2-Y2, Y3-Y3, Y4-Y4, and Y5-Y5 in FIG. 7B, and FIG. 8B is X1 in FIG. 7D. It is -X1 sectional view taken on the line.

  The housing 20 is made of a thermoplastic resin such as PBT (polybutylene terephthalate), and has an upper surface 202, a bottom surface 204, and four side surfaces 206, 208, 210, and 212 that connect the upper surface 202 and the bottom surface 204 (hereinafter referred to as “bottom surface”). Side 206 is referred to as the first side, and side 210 is referred to as the second side). The first side surface 206 is formed with five rectangular openings 220, 222, 224, 226, and 228 extending toward the inside of the housing.

  The opening 220 penetrates from the first side face 206 to the second side face 210. The opening 222 is partitioned from the adjacent openings 220 and 224 by a wall, and extends to the wall 222 a located in front of the second side face 210. Further, the opening 222 is surrounded by an upper wall 222c so as to form a gap 222b with the upper surface 202 of the housing.

  The opening 224 extends longer inside the housing than the opening 222, and its end is closed by a wall 224a. The opening 224 communicates with a gap 222b formed at the upper part of the opening 222 described above.

  The opening 226 extends the same distance as the opening 222 and its end is closed by a wall 226a. The opening 228 extends in a certain shape up to the wall 228a, and extends from there to the second side surface 210 through a slit-like through hole 228b. The openings 220 to 228 are juxtaposed so as to be substantially parallel between the upper surface 202 and the bottom surface 204.

  The second side surface 210 includes an opening 230 that defines the outlet of the opening 220, an opening 232 that faces the opening 222, an opening 236 that faces the opening 226, and an opening that defines the outlet of the elongated through hole 228 b of the opening 228. 238 is formed. Opening 232 extends to wall 222a and opening 236 extends to wall 226a.

  Two rectangular openings 202a and 202b are formed on the upper surface 202 of the housing. Each of the openings 202a and 202b communicates with a space formed by the opening 220.

  On the bottom surface 204 of the housing, circular through holes 204a, 204b, and 204c for inserting the fusing pin 14 are formed. The through holes 204a, 204b, 204c communicate with the spaces of the openings 222, 224, 226, respectively. Protrusions 204d and 204e are formed at positions adjacent to the through holes 204a and 204c. Furthermore, the bottom surface 204 has an extending portion 240 that protrudes a certain distance after exceeding the second side surface 210.

  FIG. 9 is a cross-sectional view showing the internal configuration of the protector. The protector 30 has a metal container 302 and a header 304 that is electrically insulated and attached to the open surface of the metal container 302 as is well known. A bimetal switch 306 is disposed in the metal container 302. One end of the bimetal disk is fixed to a conductive support plate 308, and the metal container 302 is connected to a conductive pin 310 passing through the center of the header 304 by welding or the like. A movable contact 312 is fixed to the other end of the bimetal, and the movable contact 312 contacts or is isolated from a fixed contact 314 provided on the inner wall of the metal container 302. The conductive pins 310 and the metal container 302 function as external terminals of the protector 30. When an excessive current is passed through the external terminal or when the ambient temperature becomes abnormal, the bimetal disk is reversed, the movable contact 312 is isolated from the fixed contact 314, and the current path is interrupted.

  FIG. 10 is a plan view of the fuse terminal. The fuse terminal 40 is formed by punching a conductive sheet metal such as a copper alloy, thereby connecting a wide end portion 402, a wide end portion 404, and a narrow cross-sectional area with a small cross-sectional area. The fuse part 406 is processed. A protrusion 408 is formed at one end 402, the protrusion 408 is held by a holding member 50 described later and connected to the conductive pin 310 of the protector 30 by welding, and the other end 404 is a second side surface 210 of the housing. Is inserted into the opening 230. The cross-sectional area of the fuse portion 406 is appropriately selected so as to blow when a constant current flows.

  11A and 11B are views showing the structure of the holding member 50. FIG. 11A is a perspective view of the holding member, and FIGS. 11B to 11F are views of FIG. 11A from the arrows A1 to A5. FIG.

  The holding member 50 is made of, for example, a thermosetting resin such as unsaturated acid polyester, and includes a protector holding part 500 that holds the protector 30, and a fuse terminal holding part 520 connected to the protector holding part 500. . The protector holding part 500 is formed at a center portion of the partition surface 508 and a first space 510 surrounded by a pair of opposing side surfaces 502 and 504, an upper surface 506 connecting the side surfaces 502 and 504, and the partition surface 508. And a second space 514 communicated through an elliptical opening 512. The second space is surrounded by the side surfaces 502 and 504, the partition surface 508, and the side surface 516, and the upper surface side thereof is exposed. The header portion of the protector 30 is accommodated in the first space 510, and the conductive pin 310 extends into the second space 516 through the opening 512.

  The fuse terminal holding part 520 has a rectangular outer shape and extends from the side surface 502. A U-shaped protrusion 524 is formed on the upper surface 522 of the fuse terminal holding portion 520. An opening 526 is formed in a portion surrounded by the protrusion 524, and a third space is formed inside by the opening 526. The third space communicates with the second space 514 through an opening (not shown) formed in the side surface 502. A slit-like cut 530 is formed from the end 528 of the fuse terminal holding portion 520 along the central longitudinal direction thereof, and the cut 530 is communicated with the third space.

  As shown in FIG. 11 (f), the interval between the notches 530 gradually decreases toward the center, and the portion with the narrowest interval is substantially equal to the plate thickness of the fuse terminal 40. When the header portion of the protector 30 is accommodated in the first space 510 and the conductive pin 310 is inserted into the second space 514 therefrom, the fuse terminal 40 is held in the notch 530 and one end of the fuse terminal 40 is held. The part 402 is located in the second space 514. The fuse terminal 40 is positioned so that the protrusion 408 formed on the one end 402 can be welded to the conductive pin 310. When the protrusion 408 and the conductive pin 310 are fixed by welding, the fuse portion 406 is exposed from the opening 526 surrounded by the protrusion 524.

  FIG. 12 is a diagram illustrating a configuration of the connection terminal (quick terminal) 90. The connection terminal 90 is preferably made of a metal such as stainless steel. The connection terminal 90 has a connection part 900 connected to the bottom surface of the metal container 302 of the protector 30 and a terminal part 910. The connecting portion 900 is set to a length substantially equal to that of the metal container 302 of the protector 30, a welding protrusion 902 to be welded to the metal container 302, and a plurality of protrusions 904 having substantially the same height as the welding protrusion 902. Have Since the outer shape of the header 304 of the protector 30 is larger than that of the metal container 302, the welding projection 902 and the projection 904 cause the protector 30 to be substantially horizontal when the protector 30 is placed on the connection portion 900. The terminal portion 910 extends in a direction perpendicular to the connection portion 900 so that its surface is perpendicular to the surface of the placement portion. The terminal portion 910 is inserted into the slit-shaped through hole 228b from the opening 238 on the second side surface of the housing 20 described above. Note that the protrusion 904 can also be used for welding.

  After the protector 30 and the fuse terminal 40 are held by the holding member 50, the connection portion 900 is welded to the metal container 302 of the protector 30. As a result, the holding member 500 is modularized. In addition, after welding the connection part 900 to the protector 30, you may make it weld the electroconductive pin 310 and the fuse terminal 40 of the protector 30. FIG.

  As shown in FIGS. 3 to 6, the modular holding member 50 is attached to the second side surface 210 of the housing 20. The fuse terminal holding part 520 is inserted into the opening 230 having a rectangular inner shape, and the U-shaped protrusion 524 of the fuse terminal holding part 520 is fitted into the opening 202a of the housing. Further, the connection terminal portion 910 of the connection terminal 90 is inserted into the through hole 228 a from the opening 238, and the bottom surface of the holding member 50 is supported on the extending portion 240 of the housing 20. In this way, the holding member 50 is fixed to the second side surface 210 of the housing 20.

  Next, the connection terminals 60, 70, 80 inserted into the first side surface 206 of the housing 20 will be described. As shown in FIGS. 3 to 6, the connection terminal 60 is inserted into the opening 222 of the first side face 206. The connection terminal 60 is made of a conductive metal such as a copper alloy, and a motor operation winding 64 is fixed to one end 62. The metal extending from the one end 62 is folded back at approximately 360 degrees to form the other end 66. By forming the folded portion, a certain gap is formed between the one end portion 62 and the other end portion 66, and the other end portion 66 can be elastically deformed with respect to the one end portion 62 using the folded portion as a fulcrum. Further, an elastic holding portion 68 having a curved surface for elastically holding the fusite pin (main winding terminal M) is formed at a predetermined position where the one end portion 62 and the other end portion 66 face each other.

  The width of the opening 222 is slightly narrower than the gap between the one end 62 and the other end 66. When the connection terminal 60 is inserted into the opening 222, the one end 62 and the other end 66 cover the inner wall of the opening 222. Press. At the same time, the connection terminal 60 is positioned on the protrusion 204d from the bottom surface of the housing, the folded portion is brought into contact with the wall 222a, and the elastic holding portion 68 is aligned with the through hole 204a. In this way, the connection terminal 60 is held in the opening 222.

  The connection terminal 80 has the same basic configuration as the connection terminal 60. A motor start winding 82 is connected to one end of the connection terminal 80, inserted into the opening 226 of the first side face 206, and positioned by the protrusion 204e. The elastic holding portion of the connection terminal 80 is aligned with the through hole 204c and elastically holds the starting winding terminal S inserted from the through hole 204c.

  13A and 13B are diagrams showing the configuration of the connection terminal 70. FIG. 13A is a left side view, FIG. 13B is a top view, FIG. 13C is a right side view, and FIG. It is a front view. The connection terminal 70 is obtained by processing a conductive metal such as a copper alloy, and includes a base portion 700 and two protrusions 704 protruding downward from one end portion 702 that is bent from the base portion 700 and extends in a crank shape. And a pair of positioning portions 710 extending from the central portion of the base portion 700 in a perpendicular direction, and a terminal holding portion 720 extending from the other end portion of the base portion 700 in a perpendicular direction.

  The pair of positioning portions 710 extend a certain distance from the base portion 700 so that the width gradually decreases, and a protruding portion 712 having an inclined surface at the tip is formed.

  The terminal holding portion 720 includes a bent portion 722 that bends in a right angle direction from the other end of the base portion 700, a first extending portion 724 that extends from the bent portion 722, and approximately 360 from the first extending portion 724. A folded portion 726 that is folded back and a second extending portion 728 that extends from the folded portion 726 to the front of the base 700 are provided. An elastic holding portion 730 including a curved surface for elastically holding the fusite pin is formed at a position where the first and second extending portions 724 and 728 face each other.

  The connection terminal 70 is inserted into the opening of the first side face 206 of the housing. That is, the terminal holding part 720 is inserted into the opening 224, and at this time, the elastic holding part 730 is aligned with the through hole 204b formed in the bottom surface. At the same time, the positioning portion 710 is inserted into the gap 222b formed in the upper portion of the opening 222, and the protruding portion 712 at the tip is locked with a locking portion (not shown) formed in the gap 222b, thereby connecting terminals. 70 is fixed. Further, the protrusion 704 of the base 700 is positioned in the opening 220 through the gap 222b, and the protrusion 704 is aligned on the other end 404 of the fuse terminal 40. In this state, the projection 704 is welded from the welding opening 202 b of the housing 20 to the other end 404 of the fuse terminal 40.

  Further, as shown in FIGS. 3 to 6, the connection terminal 100 is inserted from the opening 228 of the first side face 206 of the housing. As described above, the terminal portion 910 of the connection terminal 90 extends from the second side surface 210 of the housing into the opening 228 through the slot-shaped through hole 228b. As shown in FIG. 5, the one end portion 102 of the connection terminal 100 is formed with an elastic holding portion 104 whose end portion is bent so that the terminal portion 910 can be elastically held. The other end 106 of the connection terminal 100 is connected to the common electrode line 108.

  Thus, the connection terminals 60.70, 80, 100 are attached to the first side face 206 of the housing 20, and the modularized IBPS holding member 50 is attached to the second side face 210. Then, fusing pins are inserted into through holes 204 a, 204 b and 204 c formed in the bottom surface of the housing 20, and these are electrically connected to the connection terminals 60, 70 and 80.

  The current supplied from the common terminal C flows to the common electrode line 108 via the connection terminal 70, the fuse terminal 40, the conductive pin 310, the bimetal switch 305, the metal container 302, the connection terminal 90, and the connection terminal 100. It is. Further, the main winding of the motor is interfaced with the outside via the connection terminal 60 and the main winding terminal M, and the starting winding is interfaced with the outside via the connecting terminal 80 and the starting winding terminal S. Is done.

  According to the present embodiment, the protection device 1 is configured to be divided into the housing 20 and the holding member 50. Therefore, even if the mounting position, the mounting direction mounting space, etc. are different for each specification of the electric compressor. It is expected that it is possible to cope with the problem by designing either the housing or the holding member without designing the entire protective device. Thereby, the cost and labor required for the design can be reduced.

  Further, since the holding member 50 holds the fuse terminal 40, the holding member 50 has a thermally stable and expensive thermosetting resin (such as unsaturated acid polyester) so that it can cope with high heat that may occur at the time of fusing. However, in the case of a monolithic housing as in the prior art, the entire housing had to be made of an expensive thermosetting material. In the present embodiment, a thermoplastic material having a cost lower than that of the holding member can be used as the material of the housing, and as a result, a protection device with a reduced cost can be provided.

  Furthermore, by adopting a configuration in which a plurality of openings are juxtaposed on the first and second side surfaces of the housing, the housing can be made thin and compact, and accommodated in a limited space in the electric compressor. It becomes possible.

  Although the preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the specific embodiment, and various modifications are possible within the scope of the gist of the present invention described in the claims. Can be changed.

  The protection device according to the present invention is used in an electric compressor such as a freezer or an air conditioner, and is particularly used as an integrated protector including an internal protector or a cluster block mounted in the electric compressor.

It is a figure explaining the protective device attached to the inside of a hermetic type electric compressor. 2A is a perspective view of the fusite pin as seen from the top of the shell, and FIG. 2B is a plan view of the fusite pin as seen from the inside of the shell. It is a figure which shows the structure of the protection apparatus of a present Example, and is the perspective view seen from the 2nd side surface upper side. It is a figure which shows the structure of the protection apparatus of a present Example, and is the perspective view seen from the downward direction of the 2nd side surface side. It is a figure which shows the structure of the protection apparatus of a present Example, and is the perspective view seen from the upper side of the 1st side surface side. It is a figure which shows the structure of the protection apparatus of a present Example, and is the perspective view seen from the downward | lower direction of the 1st side surface side. FIG. 7A is a view showing a second side surface of the housing, FIG. 7B is a top view, FIG. 7C is a bottom view, and FIG. 7D is a first side view. FIG. 8A is a cross-sectional view taken along line Y1, Y2, Y3, Y4, and Y5 in FIG. 7B, and FIG. 8B is a cross-sectional view taken along line X1 in FIG. 7D. It is sectional drawing which shows the internal structure of a protector. It is a figure which shows a fuse terminal. FIG. 11A is a perspective view of the holding member, and FIGS. 11B to 11F are arrow views of A1 to A5 in FIG. 11A. 12A is a front view of the connection terminal 90, FIG. 12B is a side view thereof, and FIG. 12C is a front view thereof. 12A is a left side view of the connection terminal 70, FIG. 13B is a top view, FIG. 13C is a right side view, and FIG. 13D is a front view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Protection apparatus 10: Electric compressor 12: Shell 14: Fucite pin 16: Discharge pipe 18: Winding 20: Housing 30: Protector 40: Fuse terminal 50: Holding member 60: Connection terminal 70: Connection terminal 80 : Connection terminal 90: connection terminal 100: connection terminal 206: first side surface 210: second side surface 220, 222, 224, 226, 228: opening 230, 232, 236, 238: opening

Claims (14)

A protective device installed in an electric compressor, wherein the protective device is
A second surface that includes a top surface, a bottom surface, a side surface that connects the top surface and the bottom surface, a plurality of openings for inserting at least the first and second connection terminals are formed in the first side surface, and the second side faces the first side surface; A housing made of an insulating material having a plurality of openings formed on the side surface thereof,
A protector having first and second external terminals electrically connected to a thermally responsive switch housed therein;
One end portion, the other end portion, and a fuse portion between the one end portion and the other end portion are included, one end portion is connected to the first external terminal of the protector, and the other end portion is connected to the first connection terminal. A fuse terminal made of conductive metal;
A connection terminal electrically connected to the second external terminal of the protector;
Holding the protector so that a part of the protector is exposed, and having a holding member made of an insulating material that holds a fuse terminal having one end connected to the first external terminal of the protector,
When the holding member is attached to the second side surface of the housing, the other end of the fuse terminal is inserted into one opening of the second side surface and connected to the first connection terminal in the opening. A protective device in which a connection terminal connected to the second external terminal is inserted into another opening of the second side surface and connected to the second connection terminal in the opening. The plurality of openings formed in the first side surface are separated from each other by the partition wall and extend in parallel toward the inside of the housing, and some of the plurality of openings formed in the second side surface are the first side surface. The protection device of claim 1 in communication with some of the openings. The protective device according to claim 1, wherein a plurality of through holes are formed in a bottom surface of the housing, and the plurality of through holes communicate with corresponding ones of the plurality of openings on the first side surface. An opening for welding is formed on the upper surface of the housing, and the other end of the first connection terminal inserted from the opening on the first side surface and the fuse terminal inserted from the opening on the second side surface passes through the welding opening. The protective device according to claim 1, wherein the protective device is welded. The protective device according to any one of claims 1 to 4, wherein an opening is formed on an upper surface of the housing, and a fuse portion of a fuse terminal inserted from the opening on the second side surface is exposed through the opening. The protection member according to any one of claims 1 to 5, wherein the holding member includes an extending portion for holding the fuse terminal, and the extending portion has an outer shape corresponding to the shape of the opening of the second side surface. apparatus. The first connection terminal includes a holding portion for holding a terminal inserted through the through hole at a position aligned with one of the plurality of through holes formed on the bottom surface of the housing, and a fuse terminal extending from the holding portion. The protective device according to claim 1, further comprising: a connecting portion connected to the other end portion of the first positioning portion; and a positioning portion that performs positioning in the opening of the first side surface. The protection device according to claim 7, wherein the holding portion, the connection portion, and the positioning portion of the first connection terminal are inserted into different openings of the first side surface. The protection device according to any one of claims 1 to 8, wherein a bottom surface of the housing has an extending portion protruding beyond the second side surface, and a holding member is supported on the extending portion. The holding member has a protector holding part that covers a part of the outer periphery of the protector, and a fuse terminal holding part connected to the protector holding part, and the fuse terminal holding part includes a cut along its longitudinal direction, The protection device according to claim 1, wherein a fuse terminal is inserted into the notch, and the protector holding part has an opening for exposing the fuse part. 11. The protective device according to claim 1, wherein when the fuse terminal holding portion is inserted into the opening on the second side surface of the housing, the opening on the upper surface of the housing is aligned with the opening for exposure. The protector includes a metal container having one side opened to accommodate the heat responsive switch, and a header that is electrically insulated from the metal container and attached to the open surface of the metal container, and the first switch terminal of the heat responsive switch is the header. And a second switch terminal of the thermally responsive switch is electrically connected to the metal container, and the metal container constitutes the second external terminal. The protective device according to any one of 1 to 11. The protection device according to any one of claims 1 to 12, wherein the connection terminal includes a welded portion welded to the metal container of the protector and a terminal portion inserted into the opening of the second side surface. 14. Protection according to any of the preceding claims, wherein the top and bottom surfaces of the housing are flat and parallel to each other, the thickness of the housing being substantially defined by the size of the first and second openings. apparatus.

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