Battery box

Abstract

To improve the workability of battery replacement.SOLUTION: In a battery box 500, a holder 530 has a battery accommodating section 534 that accommodates a battery 520, a battery terminal section 535 that is provided in the battery accommodating section 534 and is capable of contacting an electrode of the battery 520, a holder terminal section 532 that is electrically connected to the battery terminal section and is provided on a holder bottom section 536 of the holder, and at least one engaging section 533 that protrudes from an engaging section side surface 537 that is one of the side surfaces of the holder; and a case 510 has a holder receiving section 511 that receives the holder, an insertion / removal section 512 that is an opening for inserting and removing the holder from the holder receiving section, a case terminal section 514 that is provided on a case bottom section 513 of the holder receiving section and is capable of contacting the holder terminal section 532 received in the holder receiving section, and an engaged section 515 that is provided on an inner wall of the holder receiving section and is capable of engaging with the engaging section 533.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a battery box. [Background technology]

[0002] BACKGROUND ART As a power supply device for a lock in a technology for outputting an electronic signal to perform an operation for locking or unlocking a locking object such as a door, for example, a power supply system for a lock is known (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-174994 Summary of the Invention [Problem to be solved by the invention]

[0004] In a battery box that supplies power to a lock that locks and unlocks using an electrical signal, a structure is desired that allows the contacts of the holder that holds the battery to be easily and reliably connected to the contacts of the case attached to the door where the lock is located, thereby improving the ease of battery replacement.

[0005] The present invention addresses the above-mentioned problem as an example, and has an object to provide a battery box that improves the workability of battery replacement. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the battery box of the present invention is a battery box that supplies power to an electronic lock on a door, and comprises: a case that is attached to the door and electrically connected to the electronic lock; and a holder that is equipped with a battery and is configured to be attachable and detachable to the case, wherein the holder has a battery accommodating section that accommodates the battery, a battery terminal section that is provided in the battery accommodating section and capable of contacting the electrodes of the battery, a holder terminal section that is electrically connected to the battery terminal section and provided on the bottom surface of the holder, and an engaging section that protrudes from at least one of the side surfaces of the holder, and the case has a holder receiving section that receives the holder, an insertion / removal section that is an opening for inserting and removing the holder from the holder receiving section, a case terminal section that is provided on the bottom of the holder receiving section and capable of contacting the holder terminal section received in the holder receiving section, and an engaged section that is provided on the inner wall of the holder receiving section and can engage with the engaging section. [Effects of the Invention]

[0007] The battery box according to the present invention can improve the workability of battery replacement. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a schematic configuration of a battery box according to an embodiment of the present invention; [Figure 2] 2 is a perspective view showing the battery box shown in FIG. 1 with the cover removed. FIG. [Figure 3] 2 is a perspective view showing a state in which a holder is inserted into a case in the battery box shown in FIG. 1. FIG. [Figure 4] 2 is a front view showing a holder in the battery box shown in FIG. 1 with a battery loaded therein. [Figure 5] 2 is a rear view showing the holder in the battery box shown in FIG. 1 with batteries loaded therein. [Figure 6] 2 is a bottom view showing a holder in the battery box shown in FIG. 1. FIG. [Figure 7] 1 is a perspective view showing a schematic configuration of a battery box and a door according to an embodiment of the present invention; [Figure 8] 2 is a perspective view showing a case in the battery box shown in FIG. 1. FIG. [Figure 9] 2 is a perspective view showing a state in which a holder is inserted into and removed from a case in the battery box shown in FIG. 1. FIG. [Figure 10] 2 is a perspective view showing a case terminal portion of the battery box shown in FIG. 1. FIG. [Figure 11] 2 is a partially enlarged perspective view showing a communication hole provided in the bottom of the case of the battery box shown in FIG. 1. FIG. [Figure 12] 2 is a partially enlarged perspective view, seen from below, showing a communication hole provided in the bottom of the case of the battery box shown in FIG. 1. FIG. [Figure 13] FIG. 2 is a perspective view of the battery box shown in FIG. 1, seen from below. [Figure 14] FIG. 2 is a perspective view of the battery box shown in FIG. 1 as seen from the rear. [Figure 15] 2 is a perspective view of the battery box shown in FIG. 1 with the sheet removed, as seen from the rear. FIG. [Figure 16] 2 is an enlarged cross-sectional view of a screw insertion hole portion in the battery box shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] A battery box 500 according to an embodiment of the present invention will be described below with reference to the drawings.

[0010] Fig. 1 is a perspective view schematically showing the configuration of a battery box 500 according to an embodiment of the present invention. Fig. 2 is a perspective view showing the battery box 500 with a cover 580 removed. Fig. 3 is a perspective view showing the battery box 500 with a holder 530 inserted into a case 510.

[0011] In the following description, for convenience, the front-to-rear or depth direction of the battery box 500 shown in Fig. 1 is referred to as the x-axis direction. In the following description, the width or left-to-right direction of the battery box 500 is referred to as the y-axis direction. In the following description, the up-down, vertical, or height direction of the battery box 500 is referred to as the z-axis direction.

[0012] 2 and 3, a battery box 500 according to this embodiment is provided on the door 100 (see FIG. 7) separately from the electronic lock of the door 100, and supplies power to the electronic lock. The battery box 500 includes a case 510 attached to the door 100 and electrically connected to the electronic lock, and a holder 530 that has a battery 520 mounted therein and is configured to be detachable from the case 510. The holder 530 includes a battery housing portion 534 that houses the battery 520, a battery terminal portion 535 that is provided in the battery housing portion 534 and can come into contact with the electrode of the battery 520, a holder terminal portion 532 that is electrically connected to the battery terminal portion 535 and is provided on a holder bottom portion 536 of the holder 530, and a terminal portion 532 on one side of the holder 530. Case 510 has holder receiving portion 511 that receives holder 530, insertion / removal portion 512 that is an opening for inserting and removing holder 530 into holder receiving portion 511, case terminal portion 514 that is provided on case bottom 513 of holder receiving portion 511 and that can come into contact with at least a portion of holder terminal portion 532 received in holder receiving portion 511, and engaged portion 515 that is provided on an inner wall of holder receiving portion 511 and can engage with engaging portion 533. Note that engaging portion 533 may be provided not only on engaging portion side surface 537 of holder 530 but also on another side surface of holder 530. The configuration and operation of battery box 500 will be described in detail below.

[0013] [Door Overview] FIG. 7 is a perspective view showing a schematic configuration of a battery box 500 and a door 100 according to an embodiment of the present invention. FIG. 7 is a perspective view of the door 100, such as a front door, as seen from the inside of a room. The door 100 has an exterior surface 101, which is the exterior surface shown in FIG. 7, and an interior surface 102, which is the interior surface shown in FIG. 7, and is attached to a door frame (not shown) so as to be able to open and close. The door 100 is equipped with a push-pull handle device 400. The end of the door 100 (the left side in the drawing, on which the handle device 400 is not attached) is connected to the door frame by a hinge (not shown). The door 100 can rotate around the hinge. In other words, the door 100 shown in FIG. 7 is a right-handed door. In addition to the battery box 500, the door 100 is also equipped with, for example, the handle device 400, an upper lock 600, and a lower lock 700. The upper box lock 600 and the lower box lock 700 are locked and unlocked by an electronic lock device (not shown) powered by the battery box 500, which receives an electrical signal from a remote control key, a smartphone, etc. In the battery box 500, a back part 519 is attached to the door 100 as shown in FIG.

[0014] [Battery box configuration] 1, battery box 500 includes, as main components, a case 510, a holder 530, and a cover 580. In Fig. 1, cover 580 is shown by imaginary lines to show the internal configuration of cover 580 of battery box 500.

[0015] Fig. 4 is a front view showing holder 530 with batteries 520 loaded in battery box 500. Fig. 5 is a rear view showing holder 530 with batteries 520 loaded in battery box 500. Fig. 6 is a bottom view showing holder 530 in battery box 500.

[0016] Holder 530 is equipped with a plurality of batteries 520. Holder 530 is configured to be detachable (insertable) from case 510 so that the plurality of batteries 520 can be replaced.

[0017] The holder 530 has a holder body 531 , a holder terminal portion 532 , an engagement portion 533 , a battery accommodating portion 534 , a battery terminal portion 535 , a holder bottom portion 536 , a side surface 537 on the engagement portion side, and an opposite side surface 538 .

[0018] The holder body 531 forms the general shape of the holder 530. The holder body 531 is formed so as to be able to accommodate a plurality of batteries 520, such as AA batteries, arranged with the longitudinal direction of the batteries 520 aligned in the z-axis direction. For this reason, the holder body 531 is configured, for example, in a cubic or approximately cubic shape. As shown in FIGS. 4 and 5 , the holder body 531 has four battery accommodating sections 534 on each of the front and rear sides so as to be able to accommodate, for example, four batteries 520 on each side.

[0019] Battery accommodating section 534 has a cylindrical shape that is open outward, that is, toward the front and / or rear of holder 530, depending on the shape of battery 520, so that it can accommodate batteries 520 such as AA batteries. Battery accommodating section 534 is provided with battery terminal sections 535 at both ends of each battery 520 in the longitudinal direction.

[0020] Battery terminal 535 is a spring provided in battery housing 534 and capable of contacting an electrode of battery 520. Battery terminal 535 is also electrically connected to at least two (three in this embodiment of the present invention) holder terminals 532. Holder terminal 532 is a conductive plate capable of contacting at least some of battery terminals 535, and is provided inside holder main body 531 on the side of holder bottom 536, which is the leading end in the insertion direction when holder 530 is inserted into case 510. When holder 530 is inserted into case 510, holder terminal 532 electrically connects to case terminal 514 provided on case bottom 513 of case 510. In other words, in battery box 500, power is supplied to the electronic lock from battery 520 housed in holder 530 via battery terminal 535, holder terminal 532, and case terminal 514.

[0021] As described above, holder terminal portion 532 is a conductive plate formed in a plate shape, and has recessed portion 532a in the center that is recessed toward battery 520. When holder 530 is received in holder receiving portion 511, recessed portion 532a comes into contact with case terminal portion 514 (described below) that is provided in holder receiving portion 511. Because recessed portion 532a is provided, when holder terminal portion 532 and case terminal portion 514 come into contact, the tip of case terminal portion 514 stays in recessed portion 532a, and electrical connection between holder terminal portion 532 and case terminal portion 514 can be reliably made.

[0022] Like conventional products, holder terminal 532 is made of brass and its surface is covered with nickel plating, but it also has a gold-plated layer at least in the area including recess 532a. Because of the gold-plated layer, holder terminal 532 has a lower electrical resistivity than a holder without a gold-plated layer. Therefore, holder terminal 532 can achieve a good electrical connection with case terminal 514 even if the elasticity of case terminal 514 is relatively weak. The gold-plated layer of holder terminal 532 need only be provided within recess 532a, which is the surface that contacts case terminal 514. However, it may also be provided over the entire holder terminal 532, not just recess 532a. If holder terminal 532 does not have a highly conductive layer such as a gold-plated layer, the contact pressure between holder terminal 532 and case terminal 514 must be increased. One way to increase the contact pressure is to strengthen the elastic force of the elastic member of case terminal portion 514, but in that case, it becomes difficult to bend the elastic member when attaching or detaching holder 530 to or from case 510, making it difficult to remove or attach holder 530. This problem can be solved by providing holder terminal portion 532 with a highly conductive layer such as a gold-plated layer.

[0023] The engagement portion 533 is provided on a side surface of the holder main body 531, specifically, on one of the left and right side surfaces, i.e., on an engagement portion-side side surface 537 on the right side in FIGS. 2 and 4 . The engagement portion 533 is formed as a convex portion extending in the vertical direction and protruding to the right so as to slide and fit onto the side surface of the case 510 when the holder 530 is inserted from the top to the bottom into the case 510. On the other hand, the side surface of the holder main body 531 on which the engagement portion 533 is not provided, i.e., the opposite side surface 538 on the left side in FIGS. 2 and 4 , has a shape different from that of the engagement portion-side side surface 537, for example, a flat or approximately flat surface extending in the vertical direction. The engagement portion 533 may also be provided on another side surface facing the case 510.

[0024] Holder bottom 536 is the tip side of holder main body 531 where holder terminal portion 532 described above is provided in the insertion direction into case 510, that is, the lower surface of holder main body 531. In holder main body 531, engagement portion side surface 537 and opposite side surface 538 have different shapes.

[0025] Fig. 8 is a perspective view showing the case 510 in the battery box 500. Fig. 9 is a perspective view showing the state in which the holder 530 in the battery box 500 is inserted into and removed from the case 510.

[0026] Case 510 is a base portion for attaching battery box 500 to door 100. As shown in Fig. 8, case 510 has holder receiving portion 511, insertion / removal portion 512, case bottom 513, case terminal portion 514, and engaged portion 515 as described above, as well as protrusion 516, engaging portion side surface 517, opposite side surface 518, and back surface 519.

[0027] 3, holder receiving portion 511 is formed in a shape that surrounds the left and right side surfaces and rear surface of holder 530 in order to receive holder 530 in case 510. Holder receiving portion 511 in battery box 500 is formed in a concave shape with an inner circumferential surface that has cubic or approximately cubic left and right side surfaces and a rear surface in accordance with the shape of holder 530, which is cubic or approximately cubic.

[0028] 8 and 9, insertion / removal portion 512 is an opening provided for inserting and removing holder 530 into holder receiving portion 511. Insertion / removal portion 512 is an opening provided so that the configuration of case 510 does not interfere with inserting holder 530 from the upper side of case 510 as shown by arrow A in Fig. 9. The openings of insertion / removal portion 512 are open on the upper side of case 510 and on the front side opposite back portion 519.

[0029] At least two (three in this embodiment of the present invention) case terminal portions 514 are provided on case bottom portion 513. Case terminal portions 514 are provided at positions where they can come into contact with holder terminal portions 532 received in holder receiving portion 511. Case terminal portions 514 are composed of an elastic member (spring) that exerts elastic force on holder 530 received in holder receiving portion 511, and a conductive plate.

[0030] FIG. 10 is a perspective view showing the case terminal portion 514. As shown in FIG. 10, the case terminal portion 514 is provided with a plurality of (two in this embodiment of the present invention) concave-shaped wire housing portions 514a for housing ends of electric wires (harnesses) (not shown). Having such shaped wire housing portions 514a allows each electric wire to be soldered to one case terminal portion 514 at a position corresponding to each of the two wire housing portions 514a. As a result, for example, if one of two electric wires is broken, the electric wire can be removed simply by removing the solder from one of the wire housing portions 514a. This would not be possible if the two electric wires were soldered together. Furthermore, because the wire housing portion 514a is divided into two portions corresponding to the two electric wires, the amount of solder material used can be reduced compared to when the two electric wires are soldered together. Furthermore, since the wire accommodating section 514a is divided into two sections corresponding to the two wires, it is easy to check whether the solder connection of each of the two wires to the case terminal section 514 is securely made.

[0031] The engaged portion 515 is provided on the right inner wall of the holder receiving portion 511, corresponding to the right engaging portion-side surface 517 on which the engaging portion 533 of the holder 530 is provided. The engaged portion 515 is formed as a convex portion extending in the vertical direction and protruding toward the holder 530 so as to slide into and fit with the engaging portion 533 when the holder 530 is inserted from the top to the bottom of the case 510. Note that the left opposite side surface 518 of the inner wall of the holder receiving portion 511, on which the engaged portion 515 is not provided, is formed in a shape corresponding to the opposite side surface 538 of the holder 530, for example, as a flat or approximately flat surface extending in the vertical direction. Note that when a plurality of engaging portions 533 are provided, the engaged portions 515 can be provided corresponding to the number and positions of the engaging portions 533.

[0032] Here, the effect of engaging portion 533 and engaged portion 515 will be described. When holder 530 is installed in case 510 in the correct orientation, engaging portion 533 of holder 530 engages with engaged portion 515 of case 510. If an attempt is made to install holder 530 in case 510, for example, upside down or upside down, engaging portion 533 may hit opposite side surface 518 of case 510, or engaged portion 515 may hit opposite side surface 538 of holder 530, making installation impossible. In other words, engaging portion 533 and engaged portion 515 function as guide members for installing holder 530 in case 510 in the correct orientation.

[0033] Protrusion 516 is formed in a canopy-like shape protruding from rear portion 519 (rear side) of case 510 toward the front side at the end on the insertion / removal portion 512 side. When holder 530 is received in holder receiving portion 511, protrusion 516 receives elastic force from case terminal portion 514 via the upper surface of holder 530, thereby preventing holder 530 from falling off toward the front side. Note that multiple protrusions 550 are formed on the upper surface of holder 530 in a portion facing protrusion 516. When viewed from the left-right direction (y direction), multiple protrusions 550 are protrusions formed in a triangular or approximately triangular shape, and have a shape such that their height in the vertical direction (z direction) gradually increases from the edge on the rear side of the upper surface of holder 530 toward the front side. Such multiple protrusions 550 are interposed between the upper surface of holder 530 and protrusion 516 of case 510, thereby reducing the frictional force generated between the upper surface of holder 530 and protrusion 516 when holder 530 is attached to or detached from case 510. In other words, the presence of multiple protrusions 550 makes it possible to easily attach and detach holder 530 to and from case 510. Furthermore, multiple protrusions 550 can prevent sink marks (a phenomenon in which the surface of a molded product becomes hollow) that occur when the product is cooled and solidified in a mold during molding.

[0034] Fig. 11 is a partially enlarged perspective view showing communication hole 541 provided in case bottom 513 of case 510. Fig. 12 is a partially enlarged perspective view seen from below showing communication hole 541 provided in case bottom 513 of case 510. Fig. 13 is a perspective view of battery box 500 seen from below.

[0035] As shown in FIGS. 11 and 12 , the case 510 has a communication hole 541 on at least one of the lower side and rear side of the case bottom 513, which connects the inside and outside of the case 510. The communication hole 541 allows moisture, such as condensation generated inside the battery box 500 or water flowing in from outside the battery box 500, to be discharged to the outside. Moisture flowing out from the communication hole 541 can be discharged to the outside of the battery box 500 through a slit 546 provided in a bottom cover 545 of the case 510 shown in FIG. 13 . The slit 546 is a gap formed between the bottom cover 545 and an opening in the case 510 to which the bottom cover 545 is attached. The communication hole 541 can also be used as a hole through which a cable tie, a harness, etc. can be passed.

[0036] Fig. 14 is a perspective view of the battery box 500 as seen from the rear side. Fig. 15 is a perspective view of the battery box 500 as seen from the rear side with the sheet 543 removed.

[0037] 14 and 15, a sheet 543 is provided on the rear surface 519 of the case 510 at the surface where the case 510 comes into contact with the interior surface 102 of the door 100. The rear surface 519 is provided with screw insertion holes 542 for inserting screws 547 when attaching the case 510 to the interior surface 102 of the door 100. The rear surface 519 also has wire insertion holes 549 as shown in FIG. 15. The wires inserted through the wire insertion holes 549 can be drawn out of the battery box 500 from wire openings 544 provided in the sheet 543 as shown in FIG.

[0038] Furthermore, by providing a detour path 551 for the electric wires around the electric wire insertion hole 549 and the screw insertion hole 542 on the rear surface 519 side, which is the side on which the holder 530 is attached, it is possible to prevent the electric wire insertion hole 549 from being blocked by wiring being routed through the electric wire insertion hole 549 from various angles in the battery box 500, and it is possible to easily insert an external connector routed from an electronic lock or the like into the battery box 500, for example.

[0039] FIG. 16 is an enlarged cross-sectional view of the screw insertion hole 542 portion of the battery box 500. As shown in FIG. 16, the screw 547 used to attach the case 510 of the battery box 500 to the door 100 has a bearing surface larger than the diameter of the pop nut 548 interposed between the screw insertion hole 542 and the screw 547. This allows the screw 547 to be attached to the interior wall 102 after the back surface 519, which has a larger diameter than the pop nut 548, is placed against the case 510. A sheet 543 is also placed between the back surface 519 and the interior wall 102. The sheet 543 is also placed on the bearing surface of the screw 547 and on the back of the step 552 around the pop nut 548. When the screw 547 is tightened to attach the case 510 to the indoor surface 102, the seat of the screw 547 presses the screw insertion hole 542 toward the indoor surface 102, causing the sheet 543 to be crushed and deformed between the indoor surface 102 and the step 552 around the screw insertion hole 542. In this way, the sheet 543 deforms between the indoor surface 102 and the step 552, thereby sealing the gap between the door 100 and the case 510 and preventing moisture from entering from the indoor surface 102.

[0040] [Battery box function and effect] The battery box 500 described above has an engaging portion 533 that protrudes outward in the left-right direction (toward the holder 530) from an engaging portion-side side surface 537 of the holder 530. The provision of the engaging portion 533 makes the shape of the holder bottom 536 asymmetrical when viewed from below in the vertical direction. The battery box 500 also has an engaged portion 515 that is provided on the inner wall of the holder receiving portion 511 and can engage with the engaging portion 533. With the battery box 500 configured as described above, even if the left-right direction of the holder 530 is reversed, that is, even if an attempt is made to attach the holder 530 to the case 510 with the engaging portion 533 facing left in the left-right direction, the presence of the engaging portion 533 makes it impossible to insert the holder 530 into the insertion / removal portion 512. Furthermore, even if holder 530 is attached to case 510 with the top and bottom directions reversed, i.e., with engaging portion 533 facing forward, engaging portion 533 will collide with engaged portion 515, preventing holder 530 from being inserted into insertion / removal portion 512. Therefore, according to battery box 500, engaging portion 533 and engaged portion 515 guide the correct attachment / detachment direction, allowing holder 530 to be easily and reliably inserted into and removed from case 510, improving the workability of battery replacement. Note that engaging portion 533 only needs to be provided on at least one of the left and right side surfaces, and may be provided on both left and right side surfaces, for example, as long as holder 530 cannot be mistakenly inserted into holder receiving portion 511 with the left and right directions reversed.

[0041] The battery box 500 described above has a protrusion 516 at the end on the insertion / removal section 512 side that protrudes from the rear section 519 side of the case 510 toward the front side, thereby preventing the holder 530 from falling off the case 510.

[0042] In the battery box 500 described above, the holder terminal portion 532 has a gold-plated layer at least on the portion that comes into contact with the case terminal portion 514, so that the electrical resistivity can be set lower than when there is no gold-plated layer, and even if the elastic force of the elastic member of the case terminal portion 514 is relatively weak, a good electrical connection with the holder terminal portion 532 can be obtained.

[0043] In the battery box 500 described above, the case terminal portion 514 has a plurality of wire housing portions 514a, so that two wires can be soldered to one case terminal portion 514, and the soldering state of each of the two wires can be easily confirmed. Therefore, the battery box 500 can improve productivity.

[0044] The battery box 500 described above has a communication hole 541 in the case bottom 513 of the case 510, which facilitates the discharge of moisture such as condensation, and the communication hole 541 can also be used as a fixing part for cable ties, thereby improving productivity.

[0045] In addition, those skilled in the art can appropriately modify the present invention in accordance with conventionally known knowledge. As long as such modifications still comprise the structure of the present invention, they are of course included in the scope of the present invention. [Explanation of symbols]

[0046] 100...door, 101...exterior surface, 102...interior surface, 400...handle device, 500...battery box, 510...case, 511...holder receiving portion, 512...insertion / removal portion, 513...case bottom, 514...case terminal portion, 514a...electric wire accommodating portion, 515...engaged portion, 516...protruding portion, 517...engagement portion side surface, 518...opposite side surface, 519...back portion, 520...battery, 530...holder, 531...holder main body, 532...holder terminal portion, 5 33...engagement portion, 534...battery storage portion, 535...battery terminal portion, 536...holder bottom portion, 537...engagement portion side surface, 538...opposite side surface, 541...communication hole, 542...screw insertion hole, 543...sheet, 544...electric wire opening, 545...bottom cover, 546...slit portion, 547...screw, 548...pop nut, 549...electric wire insertion hole, 550..., 551...detour path, 552...step portion, 580...cover, 600...upper box lock, 700...lower box lock

Claims

1. It is a battery box that supplies power to the electronic door lock. a case attached to the door and electrically connected to the electronic lock; a holder in which a battery is mounted and which is configured to be detachable from the case, The holder is a battery housing portion that houses the battery; a battery terminal portion provided in the battery housing portion and capable of coming into contact with an electrode of the battery; a holder terminal portion electrically connected to the battery terminal portion and provided on a bottom surface of the holder; an engagement portion protruding from at least one side surface of the holder; and The case is a holder receiving portion that receives the holder; an insertion / removal portion which is an opening for inserting and removing the holder into and from the holder receiving portion; a case terminal portion provided at a bottom of the holder receiving portion and capable of contacting at least a part of the holder terminal portion received in the holder receiving portion; an engaged portion provided on an inner wall of the holder receiving portion and capable of engaging with the engaging portion; having Battery box.

2. The case is The insertion / removal part is open at the top and front sides, and has a protrusion at the end of the insertion / removal part that protrudes from the rear side to the front side. The battery box according to claim 1 .

3. The holder terminal portion has a gold-plated layer at least on a surface that comes into contact with the case terminal portion. The battery box according to claim 1 .

4. The case is An electric wire is drawn out from the case terminal portion, The case terminal portion is provided with a plurality of concave wire accommodating portions for accommodating the ends of the wires. The battery box according to claim 1 .

5. The case is The bottom has a communication hole communicating with the outside. The battery box according to claim 1 .

Images