JP4719523B2 - Battery holder - Google Patents

Description

  The present invention relates to a battery holder for a disk-shaped battery such as a button battery or a coin battery.

  Button batteries and coin batteries are widely used as power sources for small electronic devices such as cameras and watches, and many battery holders for holding such batteries have been devised (see, for example, Patent Document 1). ). A battery holder for a button battery includes, for example, as shown in FIG. 7, a case member 201 formed using an insulating resin, and a positive electrode terminal piece 202 and a negative electrode terminal piece 203 fixed to the case member 201. Composed. The case member 201 is formed in a bottomed cylindrical shape that opens upward (on the plane side), and a storage chamber 204 that can store the button battery 210 from above is formed inside the case member 201. In addition, a claw portion 205 that restricts the button battery 210 from protruding upward from the storage chamber 204 is formed on the upper portion of the case member 201.

  The positive electrode terminal piece 202 and the negative electrode terminal piece 203 are formed using conductive leaf spring pieces, and are fixed to predetermined portions of the case member 201, respectively. Among these, the one end side of the positive electrode terminal piece 202 reaches the side of the storage chamber 204 and is elastically deformed to the positive electrode 211 exposed on one bottom surface and side surface of the button battery 210 stored in the storage chamber 204. It comes to contact with. In addition, the negative electrode terminal piece 203 reaches the center of the bottom surface of the housing chamber 204 and comes into contact with the negative electrode 212 exposed on the other bottom surface of the button battery 210 in an elastically deformed state. On the other hand, the other ends of the positive electrode terminal piece 202 and the negative electrode terminal piece 203 are drawn out to be flush with the bottom surface of the case member 201. Such a battery holder 200 is mounted on a printed circuit board, for example.

  However, in the conventional battery holder 200 as described above, since the case member 201 is formed using an insulating resin, it is necessary to thicken the meat portion of the case member 201 to some extent in order to ensure the necessary strength. This is a cause that the holder becomes large and the space occupied by the battery holder provided in the electronic device or the like becomes large. Further, since the shape of the case member 201 is complicated, the cost of the mold is increased, the cost of the case member 201 is increased, and the cost of the battery holder is increased.

  Accordingly, the inventors of the present application have devised a battery holder 250 as shown in FIG. The battery holder 250 includes a first holding member 251 having a plate portion 252 and an arm portion 253 that can come into contact with the + electrode 211 of the button battery 210, and a first electrode that can contact the negative electrode 212 of the button battery 210 in an elastically deformed state. 2 holding member 254 and fixed holding member 255 for fixing and holding the second holding member 254 to the first holding member 251 so as to face the plate portion 252, and the button battery 210 is housed in the housing space S 10. It comes to hold.

The first holding member 251 and the second holding member 254 are formed using a conductive material, and the fixed holding member 255 is formed using an insulating resin, and the first holding member 251 and the second holding member 255 Are configured to be insulated from each other. In this way, the first holding member 251 and the second holding member 254 can be made thin by using a conductive material (for example, a metal material) having high strength as the material of the first holding member 251 and the second holding member 254. Thus, the battery holder can be saved in space.
JP 2002-313299 A

  However, in such a battery holder 250, when the button battery 210 is turned upside down, that is, when the + and − electrodes 211 and 212 are reversed and inserted into the housing space S10, the side + electrode 211 becomes the first holding member. There is a problem that the circuit is short-circuited because the negative electrode 212 is in contact with the plate portion 252 of the first holding member 251 while being in contact with the arm portion 253 of 251.

  The present invention has been made in view of such problems, and an object of the present invention is to save space and reduce the cost of the battery holder. Another object of the present invention is to prevent a circuit from being short-circuited even if a disc battery is inserted in the reverse direction.

  In order to achieve such an object, the battery holder according to the present invention is provided with one electrode (for example, + electrode 6 in the embodiment) on one bottom surface and the other electrode (for example in the embodiment) on the other bottom surface. A battery holder for receiving and holding a disk-shaped battery (for example, the button battery 5 in the embodiment) provided with the electrode 7), and having a plate-like plate portion that contacts one bottom surface of the disk-shaped battery; The first holding member, the second holding member that contacts the other bottom surface of the disk-shaped battery in an elastically deformed state, and the second holding member that is disposed on the base end side of the plate portion and faces the plate portion. In this way, a holding part fixedly held by the first holding member and a fixed part having a pair of arm parts that are formed so as to face each other at the front end side of the holding part and are in elastically deformed contact with the side surface of the disk-shaped battery Constructed and a support member.

  In the battery holder having such a configuration, an accommodation space capable of accommodating a disk-shaped battery is formed by being surrounded by the plate portion, the second holding member, the holding portion, and the pair of arm portions, and the plate portion The disk-shaped battery is configured to be housed and held in the housing space while being sandwiched between the second holding member and sandwiched between the holding portion and the pair of arm portions. The holding member is formed using a conductive material, and the fixed holding member is formed using an insulating resin so that the first holding member and the second holding member are insulated from each other. In the above-described invention, the disk-shaped battery refers to a battery having a disk shape, such as a button battery or a coin battery.

  In the above-described invention, one or the other electrode may be provided on the side surface of the disk-shaped battery.

  In the above-described invention, the first holding member is formed to be opposite to each other on both side portions of the plate portion, and the pair of auxiliary members is configured such that the distal end side is adjacent to the outer surface of the pair of arm portions, respectively. It is preferable to have an arm portion, and when the arm portion comes into contact with the side surface of the disk-shaped battery and elastically deforms, the distal end side of the auxiliary arm portion comes into contact with the outer surface of the arm portion and is elastically deformed respectively. .

  Furthermore, in the above-mentioned invention, it is preferable that a contact terminal portion that contacts the one bottom surface of the disk-shaped battery in an elastically deformed state is formed on the plate portion.

  In the above-mentioned invention, the plate portion may be formed with a stopper portion that restricts the disc-shaped battery housed and held in the housing space from detaching outward from the gap portion at the tip of the pair of arm portions. preferable.

  According to the present invention, since the first holding member and the second holding member are formed using the conductive material, and the fixed holding member is formed using the insulating resin, the first holding member and the second holding member The function of holding the battery and the function as a contact terminal can be combined. The first holding member and the second holding member can be made thin by forming the first holding member and the second holding member using a conductive material (for example, a metal material) having a strength higher than that of the insulating resin. Thus, the space of the battery holder can be saved. Further, since the accommodation space is formed using the first holding member and the second holding member formed using the conductive material, the shape of the fixed holding member formed using the insulating resin can be reduced in size. This makes it possible to reduce the cost of the mold and the like, so that the cost of the battery holder can be reduced.

  Furthermore, even if one or the other electrode is provided on the side surface of the disk-shaped battery, a pair of arm portions that are in contact with a fixed holding member formed using an insulating resin while being elastically deformed on the side surface of the disk-shaped battery Therefore, regardless of the insertion direction of the disk-shaped battery, the side of the disk-shaped battery having one of the electrodes is always in contact with the arm portion having an insulating property. It is possible to prevent the circuit from being short-circuited when inserted in the direction.

  In addition, since the first holding member includes a pair of auxiliary arm portions adjacent to the outer side surfaces of the arm portions, the rigidity of the arm portions formed using the insulating resin is increased. The force for holding the battery can be improved.

  Furthermore, a contact terminal portion that contacts the bottom surface of the disk-shaped battery in an elastically deformed state is formed on the plate portion, so that the contact between the plate portion (contact terminal portion) and one bottom surface of the disk-shaped battery is prevented. It is possible to prevent a momentary interruption.

  In addition, the plate portion is formed with a stopper portion that restricts the disc-shaped battery accommodated and held in the accommodating space from detaching outward from the gap portion at the tip of the pair of arm portions. It can prevent more reliably that a battery falls off.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. A battery holder 1 according to the present invention is shown in FIG. As shown in FIG. 1, the battery holder 1 is mainly composed of a first holding member 10, a second holding member 20, and a fixed holding member 30, and a button battery 5 (see FIG. 5B). Is accommodated and held in the accommodation space S1. As shown in FIG. 5B, the button battery 5 has a disk shape, and is provided with the + electrode 6 exposed from one bottom surface (lower bottom surface) to the side surface, and the other side. The negative electrode 7 is exposed on the bottom surface (upper bottom surface).

  As shown in FIGS. 3 to 6, the first holding member 10 is formed in a box shape having an opening at the front and rear and the top using a conductive metal plate material such as phosphor bronze, and the plate-like plate portion 11 and And a pair of auxiliary arm portions 12a and 12b formed on the left and right side portions of the plate portion 11 and facing each other. In addition, a predetermined plating process is performed on the surface of the first holding member 10. In the present embodiment, for ease of explanation, the left direction in FIG. 3 is the left direction of the battery holder 1, the downward direction in FIG. 3 is the front direction of the battery holder 1, and the front direction in FIG. The upper direction of the holder 1 is assumed. Of course, the orientation of the battery holder 1 is not limited to such orientation.

  The plate portion 11 is formed in a plate shape, and the upper surface is in contact with one bottom surface (the bottom surface on the + electrode 6 side) of the button battery 5. As shown in FIG. 6, fitting protrusions 13 are formed at the left and right rear end portions of the plate portion 11 so as to extend upward. As shown in FIG. It is designed to press fit.

  As shown in FIGS. 1 and 6, a plate-like contact terminal portion 14 is formed by being cut and raised obliquely rearward and upward in the center of the plate portion 11. As shown in FIG. 5B, the button battery 5 One bottom surface (the bottom surface on the + electrode 6 side) is in a state of being elastically deformed downward and in contact therewith. Thereby, since the contact terminal portion 14 is in contact with one bottom surface of the button battery 5 in a state of receiving an elastic force, the contact between the plate portion 11 (contact terminal portion 14) and one bottom surface of the button battery 5 is instantaneous. Can be prevented from being interrupted.

  As shown in FIGS. 1 and 6, a stopper portion 15 is formed at the center of the front end of the plate portion 11 so as to protrude upward, and the button battery 5 housed and held in the housing space S1 is fixedly held. From the gap (at the left and right guide portions 40a, 40b described later) at the tips of the left and right arm portions 32a, 32b formed on the member 30 is restricted from being released outward (forward). Thereby, it is possible to more reliably prevent the button battery 5 from dropping from the battery holder 1. In addition, first terminal protrusions 16 are formed in the left and right front end portions of the plate portion 11 so as to extend in the left-right direction, and are formed on a printed circuit board (not shown) located below the plate portion 11 (battery holder 1). It is designed to be soldered.

  The left auxiliary arm portion 12a is formed so as to be bent upward from the left side portion of the plate portion 11 as shown in FIG. 6, and the left auxiliary arm portion 12a is formed outside the left arm portion 32a as shown in FIG. It contacts the side surface of the step part 41a adjacently. The right auxiliary arm portion 12b is formed so as to be bent upward from the right side portion of the plate portion 11 symmetrically with the left auxiliary arm portion 12a, and is formed outside the right arm portion 32b as shown in FIG. The right step portion 41b is in contact with the side surface of the right step portion 41b.

  When the left arm portion 32a and the right arm portion 32b come into contact with the side surface of the button battery 5 and are elastically deformed, the distal end sides of the auxiliary arm portions 12a and 12b are the side surfaces of the left and right step portions 41a and 41b (that is, each arm portion). 32a and 32b), and are elastically deformed in contact with each other. Thereby, since the rigidity of the arm parts 32a and 32b formed using insulating resin increases, the force holding the button battery 5 can be improved.

  As shown in FIGS. 2 and 6, the second holding member 20 is formed in a plate shape extending in the front-rear direction using a conductive metal plate material such as phosphor bronze so that the front side faces the plate portion 11. Configured. A negative electrode contact portion 21 is formed at the front end portion of the second holding member 20 so that the button battery 5 is elastically deformed upward as shown in FIG. It is in contact with the electrode 7; As shown in FIG. 5A, the rear side of the second holding member 20 is formed to be bent downward in a crank shape and extend rearward, and the lower surface side is formed at the rear end portion of the second holding member 20. A second terminal protrusion 22 that is soldered to a printed circuit board (not shown) is formed. As shown in FIG. 6, engagement protrusions 23 are formed on the left and right side portions of the second holding member 20 extending in the vertical direction, and as shown in FIGS. 2 and 3, the fixed holding member 30. The engaging groove portions 37 are engaged with each other.

  As shown in FIG. 6, the fixed holding member 30 is formed in an “U” shape in a plan view using an insulating resin such as an LCP (Liquid Crystal Polymer) resin, and has a substantially rectangular parallelepiped holding portion 31 and a holding portion. A pair of arm portions 32a and 32b that are formed on the left and right tip sides of 31 and face each other. As shown in FIG. 4, fitting holes 33 are formed on the left and right sides of the holding portion 31 so as to extend upward, and the fitting protrusions 13 of the plate portion 11 are press-fitted and fitted from below. 1 to 3, the holding portion 31 closes the gap between the left and right auxiliary arm portions 12a and 12b (the rear end), so that the base end portion (the rear end portion) of the plate portion 11 is closed. ) To be fixed.

  As shown in FIGS. 2 and 4, a base-side stepped portion 34 that is connected to the left and right side surfaces from the lower surface front portion of the holding portion 31 and overlaps the rear portion of the first holding member 10 is formed. Further, in the vicinity of the fitting hole 33 in the holding portion 31, positioning boss portions 35 with respect to a printed board (not shown) of the battery holder 1 are formed to protrude downward.

  As shown in FIG. 6, a groove-shaped second holding member fixing portion 36 is formed in the center of the rear portion of the holding portion 31 so as to extend in the vertical direction. As shown in FIGS. The second holding member 20 is fixed to the second holding member fixing portion 36 by engaging the engaging protrusions 23 of the second holding member 20 with the engaging groove portions 37 formed on the left and right sides of the member fixing portion 36, respectively. It has become so. Accordingly, the first holding member 10 and the second holding member 20 are insulated from each other using the holding portion 31 of the fixed holding member 30, and the first holding member 20 faces the plate portion 11. It is fixedly held by the holding member 10. As shown in FIG. 6, a battery contact portion 38 having a curved surface that matches the shape of the side surface of the button battery 5 is formed at the front center of the fixed holding member 30, as shown in FIG. When the button battery 5 is housed in the housing space S1, the side surface of the button battery 5 is brought into contact.

  As shown in FIGS. 2 and 6, the left arm portion 32a is formed to extend forward on the left side (front left side) of the holding portion 31 and on the inner side (right side) on the side surface of the button battery 5. A curved left contact portion 39a that can be contacted is formed. Further, the left arm portion 32a is configured to swing left and right on the upper surface of the plate portion 11 using elastic deformation, and when the button battery 5 is accommodated in the accommodation space S1, the button battery 5 It contacts the side surface in an elastically deformed state.

  A left guide portion 40a is formed on the front end portion (front end portion) of the left arm portion 32a in a planar shape extending from the front end of the left contact portion 39a to the front left (outward), and the button battery 5 is accommodated in the accommodation space S1. Easy to insert into. Further, as shown in FIG. 1, a left step portion 41a is formed on the outer (left side) lower portion of the left arm portion 32a, and the left auxiliary arm portion 12a of the first holding member 10 is connected to the left step portion 41a. It comes in contact with the outer side.

  The right arm portion 32b is formed so as to extend forward on the right side (front right side) of the holding portion 31 symmetrically with the left arm portion 32a, and on the inner side (left side) as shown in FIG. A curved right contact portion 39b that can contact the side surface of the button battery 5 is formed. Further, the right arm portion 32b is configured to be able to swing left and right on the upper surface of the plate portion 11 using elastic deformation, and when the button battery 5 is accommodated in the accommodation space S1, the button battery 5 It contacts the side surface in an elastically deformed state.

  A right guide portion 40b is formed in a flat shape extending from the front end of the right contact portion 39b to the front right (outward) at the front end portion (front end portion) of the right arm portion 32b, and the button battery 5 is accommodated in the accommodation space S1. Easy to insert into. Further, as shown in FIGS. 2 and 6, a right step portion 41b is formed on the outer (right side) lower portion of the right arm portion 32b, and the right auxiliary arm portion 12b of the first holding member 10 has the right step portion. It contacts the outer surface of the portion 41b.

  The button battery 5 is accommodated by being surrounded by the plate portion 11 of the first holding member 10, the second holding member 20, the holding portion 31 of the fixed holding member 30, and the left and right (a pair of) arm portions 32a and 32b. A possible accommodation space S1 is formed, and as shown in FIG. 5B, sandwiched between the plate portion 11 and the second holding member 20 and sandwiched between the holding portion 31 and the left and right arm portions 32a and 32b. Thus, the button battery 5 is accommodated and held in the accommodation space S1. Thereby, the button battery 5 can be housed and held in the housing space S <b> 1 using the battery holder 1.

  In the battery holder 1 configured as described above, as described above, the first holding member 10 and the second holding member 20 are formed using a conductive material, and the fixed holding member 30 is formed using an insulating resin. Thus, the first holding member 10 and the second holding member 20 are configured to be insulated from each other. Therefore, the first holding member 10 and the second holding member 20 can have both the function of holding the button battery 5 and the function as a contact terminal that contacts the + electrode 6 and the − electrode 7 of the button battery 5. .

  The first holding member 10 and the second holding member 20 are formed using a conductive material (metal material) having a strength higher than that of the insulating resin, so that the first holding member 10 and the second holding member 20 are thinly formed. Thus, the battery holder 1 can be saved in space. Further, since the accommodation space S1 is formed using the first holding member 10 and the second holding member 20 formed using the conductive material, the shape of the fixed holding member 30 formed using the insulating resin is reduced in size. Since the cost of the mold can be reduced, the cost of the battery holder 1 can be reduced.

  Further, although the + electrode 6 is provided on the side surface of the button battery 5, the left and right arm portions 32 a and 32 b are formed using an insulating resin, so that the + Since the insulating arm portions 32a and 32b are always in contact with the side surface of the button battery 5 having the electrode 6, the circuit is short-circuited when the button battery 5 is inserted in the reverse direction. It becomes possible to prevent.

  The battery holder 1 is used in a state where it is mounted on a printed board (not shown) by soldering or the like. In order to accommodate and hold the button battery 5 in the battery holder 1, the button battery 5 is brought into contact with the left and right guide portions 40a and 40b from the front upper side of the battery holder 1 so that the arm portions 32a and 32b are spread and accommodated. Insert into the space S1. Then, as shown in FIG. 5 (b), the elastic member is sandwiched between the plate portion 11 and the second holding member 20 using the elastic deformation of the second holding member 20 and the left and right arm portions 32a and 32b, and the holding portion. The button battery 5 is housed and held in the housing space S <b> 1 of the battery holder 1 while being sandwiched between the left and right arm portions 32 a and 32 b. At this time, the plate portion 11 (and the contact terminal portion 14) of the first holding member 10 is in contact with the + electrode 6 of the button battery 5, and the −electrode contact portion 21 of the second holding member 20 is the −electrode of the button battery 5. 7 is contacted. On the other hand, in order to take out the button battery 5 from the housing space S1 of the battery holder 1, an operation reverse to the case where the button battery 5 is inserted into the housing space S1 may be performed.

  According to the battery holder 1 configured as described above, the first holding member 10 and the second holding member 20 are formed using a conductive material, and the fixed holding member 30 is formed using an insulating resin. The first holding member 10 and the second holding member 20 can have both a function of holding the button battery 5 and a function as a contact terminal. Then, the first holding member 10 and the second holding member 20 are formed using a conductive material (metal material) having a strength higher than that of the insulating resin, so that the first holding member 10 and the second holding member 20 are thinned. Therefore, the space of the battery holder 1 can be saved. Further, since the accommodation space S1 is formed using the first holding member 10 and the second holding member 20 formed using the conductive material, the shape of the fixed holding member 30 formed using the insulating resin is reduced in size. Since the cost of the mold can be reduced, the cost of the battery holder 1 can be reduced.

  Furthermore, even if the + electrode 6 is provided on the side surface of the button battery 5, the left and right (pair) left and right (a pair) that come into contact with the side surface of the button battery 5 in an elastically deformed state with the fixing holding member 30 formed using an insulating resin. Since the arm portions 32a and 32b are provided, the arm portions 32a and 32b having insulating properties always come into contact with the side surface of the button battery 5 having the + electrode 6 regardless of the direction in which the button battery 5 is inserted. Therefore, it is possible to prevent the circuit from being short-circuited when the button battery 5 is inserted in the reverse direction.

  The first holding member 10 includes left and right (a pair of) auxiliary arm portions 12a and 12b that are adjacent to the outer surfaces of the left and right arm portions 32a and 32b (left and right step portions 41a and 41b), respectively. Thus, since the rigidity of the arm portions 32a and 32b formed using the insulating resin is increased, the force for holding the button battery 5 can be improved.

  Furthermore, the plate part 11 is formed with a contact terminal part 14 which is in contact with one bottom surface (+ electrode 6) of the button battery 5 in an elastically deformed state, so that the plate part 11 (contact terminal part 14) and the button battery are formed. It is possible to prevent the contact with one bottom surface of 5 from being momentarily interrupted.

  The plate portion 11 is formed with a stopper portion 15 for restricting the button battery 5 housed and held in the housing space S1 from being detached from the gaps at the tips of the left and right (a pair of) arm portions 32a and 32b. Thus, it is possible to more reliably prevent the button battery 5 from dropping from the battery holder 1.

  In the above-described embodiment, a battery holder for a button battery is described as an example of the battery holder according to the present invention. However, the present invention is not limited to this. For example, a disk-shaped battery such as a coin battery is accommodated and held. The present invention can be applied to any battery holder. Moreover, although there exist a silver oxide battery, an air zinc battery, an alkaline button battery, etc. in a button battery, this invention is applicable also to any button battery.

  In the above-described embodiment, the plate portion 11 of the first holding member 10 is in contact with the + electrode 6 of the button battery 5, and the second holding member 20 is in contact with the − electrode 7 of the button battery 5. However, the present invention is not limited to this, and the plate portion of the first holding member may be in contact with the negative electrode and the second holding member may be in contact with the positive electrode.

  Further, in the above-described embodiment, the + electrode 6 is provided from one bottom surface to the side surface of the disk-shaped battery (button battery 5), and the-electrode 7 is provided on the other bottom surface. Instead, the + electrode may be provided only on one bottom surface of the disk-shaped battery. Further, a negative electrode may be provided from one bottom surface to a side surface of the disk-shaped battery, and a positive electrode may be provided on the other bottom surface. At this time, the negative electrode may be provided only on one bottom surface of the disk-shaped battery.

It is a perspective view of the battery holder which concerns on this invention. It is the perspective view which looked at the battery holder from back. It is a top view of a battery holder. It is a bottom view of a battery holder. (A) is a sectional side view of a battery holder, (b) is a sectional side view which shows the state in which the button battery was accommodated in the battery holder. It is a disassembled perspective view of a battery holder. It is a sectional side view which shows the conventional battery holder. It is a perspective view which shows another conventional battery holder.

Explanation of symbols

1 Battery holder 5 Button battery (disc-shaped battery)
6 + electrode (one electrode)
7-Electrode (the other electrode)
DESCRIPTION OF SYMBOLS 10 1st holding member 11 Plate part 12a Left auxiliary arm part 12b Right auxiliary arm part 14 Contact terminal part 15 Stopper part 20 Second holding member 30 Fixed holding member 31 Holding part 32a Left arm part 32b Right arm part S1 Storage space

Claims (5)

A battery holder for holding and holding a disk-shaped battery in which one electrode is provided on one bottom surface and the other electrode is provided on the other bottom surface,
A first holding member having a plate-like plate portion in contact with one bottom surface of the disk-shaped battery;
A second holding member that contacts the other bottom surface of the disk-shaped battery in an elastically deformed state;
A holding portion that is disposed on the base end side of the plate portion and fixes and holds the second holding member on the first holding member so as to face the plate portion, and faces the distal end side of the holding portion. A fixed holding member having a pair of arm portions formed in contact with each other in a state of being elastically deformed to the side surface of the disk-shaped battery,
An accommodation space capable of accommodating the disk-shaped battery is formed surrounded by the plate portion, the second holding member, the holding portion, and the pair of arm portions, and the plate portion and the second holding member. And the disc-shaped battery is configured to be housed and held in the housing space in a state sandwiched between the holding portion and the pair of arm portions.
The first holding member and the second holding member are formed using a conductive material, the fixed holding member is formed using an insulating resin, and the first holding member and the second holding member are mutually connected. A battery holder configured to be in an insulated state.   The battery holder according to claim 1, wherein the one or the other electrode is provided on a side surface of the disk-shaped battery. The first holding member has a pair of auxiliary arm portions that are formed on both side portions of the plate portion so as to face each other, and the distal end sides are respectively adjacent to the outer surfaces of the pair of arm portions. And
When the arm portion comes into contact with the side surface of the disk-shaped battery and elastically deforms, the distal end side of the auxiliary arm portion comes into contact with the outer surface of the arm portion and is elastically deformed. The battery holder according to claim 1 or 2.   The contact terminal part which contacts the said plate part in the state elastically deformed to the one bottom face of the said disk shaped battery is formed in any one of Claims 1-3 characterized by the above-mentioned. Battery holder.   The plate portion is formed with a stopper portion for restricting the disk-shaped battery housed and held in the housing space from detaching outward from the gap portion at the tip of the pair of arm portions. The battery holder as described in any one of Claims 1-4.

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