JP5505988B2 - Insulation structure, button battery with insulation structure, and method of mounting insulation structure - Google Patents

Description

  The present invention relates to a button battery, and more particularly to a mounting structure thereof.

  Button batteries are often used in various electronic devices with low power consumption. A button battery is detachably mounted on a battery holder prepared by being fixed to various devices.

  FIG. 1 is a perspective view for explaining a button battery and a battery holder. Referring to FIG. 1, a surface of the button battery 1 on the positive electrode 1a side (hereinafter also referred to as a surface) is shown. The button battery 1 has a substantially cylindrical shape. The outer peripheral surface of the button battery 1 continuing from the surface is also a positive electrode 1a. On the other hand, the back surface of the button battery 1 opposite to the front surface is a negative electrode 1b. The battery holder 2 on which the button battery 1 is mounted includes a negative contact 3, a positive contact 4, and a housing 5. The battery holder 2 has a structure of a negative electrode contact 3 at its center and a positive electrode contact 4 on its side.

  FIG. 2 is a perspective view showing a state in which the button battery is mounted on the battery holder. Referring to FIG. 2, there is a gap B in the region between the outer peripheral surface of the button battery 1 and the battery holder 2 (housing 5).

  FIG. 3 is a cross-sectional view showing a state in which the button battery is mounted on the battery holder. Referring to FIG. 3, a cross section of the region indicated by AA in FIG. 2 is shown. In the button battery 1 mounted on the battery holder 2, the positive electrode 1 a and the positive contact 4 are in contact with each other. Further, the negative electrode 1b and the negative contact 3 are in contact. The button cell 1 that receives an upward force from the negative contact 3 is pressed by the positive contact 4 and the housing 5.

  In connection with the above description, a flat assembled battery is disclosed in Japanese Utility Model Laid-Open No. 59-168963. In this example, in a flat assembled battery in which a plurality of button batteries are arranged on a flat surface, a unit battery group is surrounded by a liquid absorbent material laminated with a liquid-impermeable plastic film on the outer surface, and both ends are opened. A metal cap whose inner surface is coated with an alkali-resistant insulating material is fitted to the part, and the positive and negative electrodes of both unit cells constituting the assembled battery are connected to the metal cap, and the outer surface is covered with a heat-shrinkable tube doing.

  Japanese Utility Model Laid-Open No. 04-047261 discloses a coin battery holder. In this example, the holder main body that forms a part of the case is composed of a knob portion and a holder portion, and the coin battery is accommodated by leaving a cutout portion that exposes a portion of the coin battery by the short arm and the curved arm of the holder portion. A possible space is defined, and a holder plate that abuts the coin cell center electrode is arranged on one side of the holder, and the holder plate is squeezed at a required position of the short arm and the curved arm, and the staking part and the battery exposing part are provided. It is possible to make contact with the contacts provided on the electronic device case side, and the knob does not have a charging terminal hole for inserting the pin contact of the coin battery charger, and the coin battery charger contacts the periphery of the coin battery charger with a curved arm. It covers the point where the contact point for contact comes into contact.

  Further, a battery holder is disclosed in Japanese Patent Laid-Open No. 2002-75312. In this example, the button-type battery 1 is inserted between the housings 4 b and 4 c and between the lower side of the fixed housings 8 b and 8 c and the bottom surface of the battery holder 2 from the upper side of the stopper 9. . Therefore, the fixed housings 8a to 8d are not deformed because they do not receive a pressing force from the button battery 1 when the button battery 1 is inserted. When the button-type battery 1 is stored in the battery holder 2, the button-type battery 1 is prevented from falling upward by the fixed housings 8 a to 8 d, and the housing 4 a to 4 f and the stopper 9 are prevented from dropping laterally. It is supposed that the fixed state is prevented. Since the lengths of the fixed housings 8a to 8d can be increased, they can be prevented from falling off due to impact or the like.

  Japanese Patent Application Laid-Open No. 2002-324532 also discloses a battery holder. In this example, a columnar lock portion 5 is protruded from the holder main body 2 of the battery holder 1, and the opposite surface 5a of the lock portion facing the peripheral side surface Bs of the button-type battery is placed about an angle θ1 in the center direction of the button-type battery. It is said that the lock part can be flexibly bent greatly when the button-type battery is accommodated. In addition, since the engaging surface 5c of the claw portion 5b that engages with the upper surface Bu of the button-type battery is formed on the opposite surface 5a so as to be inclined downward by an angle θ2, even if the locking portion is bent and warps, the engaging surface is inclined downward. The button-type battery is not easily detached by being locked to the upper surface in a state or in a substantially horizontal state.

  Japanese Patent Application Laid-Open No. 2004-39347 discloses a battery holder terminal. This is because the positive terminal 5 is in electrical contact with the positive electrode of the button battery 2 housed in the battery housing part 10 composed of the bottom plate 7 and the peripheral walls 8 and 9 provided on the bottom plate 7, and the negative terminal is connected to the negative electrode. 6 is an electrical contact. The configuration is such that the plus terminal 5 and / or the minus terminal 6 are formed by bending elongated rectangular metal pieces 30 and 40 to be attached to the peripheral walls 8 and 9; and Locking portions 32, 42 that are provided in a part of the metal pieces 30, 40 forming the mounting portions 31, 41, engage with the peripheral walls 8, 9, and lock the mounting portions 31, 41, and the mounting portions. The metal terminal 30 and 40 which become the battery accommodating part 10 side from 31 and 41 are bent, It consists of the contact terminal parts 34 and 43 which contact the electrode of the button battery 2 accommodated in the battery accommodating part 10 electrically.

  Also, a button battery holder and a connection structure thereof are disclosed in Japanese Patent Application Laid-Open No. 2004-134271. This comprises an insulating holder 5 for storing the button battery 1 and a holder 7 for fixing the insulating holder 5 to the circuit board 15. The insulating holder 5 is formed of an elastic material into a bottomed cylindrical shape, and is substantially at the center of the bottom. The first connecting terminal 6 connected to one electrode of the button battery 1 is provided on the electrode 7, and the holder 7 has an electrode leg having a second connecting terminal 11 connected to the holding leg 8 and the other electrode of the button battery at the tip. And 10. The holding legs 8 of the holder 7 formed so as to cover the insulating holder 5 are provided at two positions at both ends of the button battery 1 (both ends of the diameter when the button battery is circular), and the electrode legs 10 are held. It is preferable to be provided at a position substantially perpendicular to the leg 8.

  Japanese Patent Application Laid-Open No. 2009-259666 discloses a button battery removal structure, an electronic device, and a button battery removal jig. In this example, the battery cover 21 attached to the case body 20 functions as a removal jig for removing the button battery 10 from the case body 20. The battery cover 21 has a plurality of engaging claws 211 inserted into the gaps between the case body 20 that houses the plurality of button batteries 10 and the side surfaces of the plurality of button batteries 10. The plurality of button batteries 10 can be simultaneously detached from the case body 20 using the engaging claws.

Japanese Utility Model Publication No.59-168963 Japanese Utility Model Publication No. 04-047261 JP 2002-075312 A JP 2002-324532 A Japanese Patent Laid-Open No. 2004-039347 JP 2004-134271 A JP 2009-259666 A

  In the button battery, the positive electrode and the negative electrode are exposed. When the button battery reaches the end of its life, it needs to be replaced. When the button battery is mounted on the battery holder, it is very likely that it will be handled with bare hands, and if a foreign substance adheres to the electrode portion, the contact may be oxidized and a contact failure may be induced. In addition, loose sliding between the button battery and the battery holder may induce fine sliding wear of the contact due to vibration.

  The problem to be solved by the present invention is to provide a button battery having higher contact reliability with the battery holder.

  The insulating structure of the present invention includes an elastic first insulator that is attached to the positive electrode of the button battery by mechanical coupling, and an elastic second insulator that is attached to the negative electrode of the button battery by mechanical coupling. The first insulator is provided so as to have a first exposed region in which at least a part of each of the first surface and the outer peripheral surface where the positive electrode is formed is exposed, and the second insulator Is provided so as to have a second exposed region in which at least a part of the second surface on which the negative electrode is formed is exposed.

  The button battery with an insulating structure of the present invention includes the insulating structure according to the present invention and a button battery.

  The button battery mounting structure of the present invention includes the button battery with an insulating structure according to the present invention and a battery holder.

  The method for mounting an insulating structure on a button battery according to the present invention includes a step of mounting the first insulator of the elastic body on the positive electrode of the button battery by mechanical coupling, and an elasticity on the negative electrode of the button battery by mechanical coupling. Mounting the second insulator of the body, wherein the step of mounting the first insulator is a first in which at least a part of each of the first surface and the outer peripheral surface where the positive electrode is formed is exposed. The step of mounting the second insulator is provided so as to have a second exposed region where at least a part of the second surface on which the negative electrode is formed is exposed.

  The button battery mounting method of the present invention includes a step of mounting a button battery with an insulating structure on a battery holder, wherein the battery holder has a first exposed region of the button battery and a first electrode terminal of the battery holder. The button battery is formed such that the second exposed region of the button battery is in contact with the second electrode terminal of the battery holder, and the button battery with an insulating structure has the first insulator on the positive electrode of the button battery, An insulator is attached to the negative electrode of the button battery.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide a button battery with higher contact reliability with a battery holder.

FIG. 1 is a perspective view for explaining a button battery and a battery holder. FIG. 2 is a perspective view for explaining a state in which the button battery is mounted on the battery holder. FIG. 3 is a cross-sectional view for explaining a state in which the button battery is mounted on the battery holder. FIG. 4 is a perspective view showing an example of a button battery and a battery holder according to the present embodiment. FIG. 5 is a perspective view showing an example of a state in which the button battery according to the present embodiment is mounted on the battery holder. FIG. 6 is a cross-sectional view showing an example of a state in which the button battery according to this embodiment is mounted on the battery holder.

  Hereinafter, an insulating structure according to an embodiment of the present invention, a mounting method thereof, a button battery with an insulating structure, a mounting structure thereof, and a mounting method thereof will be described in detail with reference to the accompanying drawings.

  First, the configuration of the button battery with an insulating structure according to the present embodiment will be described in detail.

  FIG. 4 is a perspective view showing an example of a button battery and a battery holder according to the present embodiment. Referring to FIG. 4, a surface (hereinafter also referred to as a surface) on the positive electrode (positive electrode) 1a side of the button battery (button type battery) 1 according to the present embodiment is shown. The button battery 1 has a substantially cylindrical shape. The outer peripheral surface (side surface) of the button battery 1 continuing from the surface is also a positive electrode 1a. On the other hand, the back surface of the button battery 1 opposite to the front surface is a negative electrode (negative electrode) 1b. In addition, this embodiment is applicable not only to a button battery but similar, for example, a coin battery.

  The button battery 1 is provided with an insulating rubber 6 that is an insulating structure formed of an insulating material. An elastic body having elasticity is used for the insulating rubber 6. In the present embodiment, an annular structure is formed in which a portion attached to the plus pole 1a side and a portion attached to the minus pole 1b side are connected. From the viewpoint of manufacturing the insulating rubber 6 and ease of mounting on the button battery 1, a ring structure is preferable. The insulating rubber 6 is formed by integrally molding the button battery 1 and the resin, attaching the molded rubber to the button battery 1, or covering the button battery 1 with a shrinkable tube. As described above, the insulating rubber 6 is not limited to rubber, and an insulating and elastic material such as plastic can be used freely. Further, preferably, the button battery 1 and the insulating rubber 6 are in a state of being bonded by mechanical coupling. Although the insulating rubber 6 does not necessarily need to be connected to one ring, it is preferable that the insulating rubber 6 is attached to a part of each region on the front surface, the back surface, and the side surface.

  The battery holder 2 on which the button battery 1 according to this embodiment is mounted includes a negative contact (negative electrode terminal) 3, a positive contact (positive electrode terminal) 4, and a housing (holding wall) 5. The battery holder 2 has a substantially circular bottom surface and an annular wall on the outer periphery thereof. The bottom surface and the annular wall of the battery holder 2 are formed of an insulating material.

  Near the center (center) of the bottom surface of the battery holder 2, a negative contact 3 formed of an electric conductor material is provided. The negative contact 3 extends in the center direction from the bottom surface near the outer periphery of the battery holder 2. The minus contact 3 is provided so as to be inclined away from the bottom surface of the battery holder 2 near the center. The minus contact 3 has flexibility. That is, the negative contact 3 is provided so as to be bent toward the bottom surface of the battery holder 2 by being pushed by the button battery 1 mounted on the battery holder 2.

  On the side of the battery holder 2 (one corner of the annular wall), a plus contact 4 made of an electric conductor material is provided. The positive contact 4 rises in the direction away from the bottom surface near the outer periphery of the battery holder 2, and the tip extends in the center direction. The positive contact 4 has flexibility in the outer peripheral direction, but does not need flexibility in the bottom direction and in the opposite direction. That is, during the attachment of the button battery 1 to the battery holder 2, the plus contact 4 is provided so as to be pushed by the button battery 1 and bend in the outer peripheral direction of the battery holder 2.

  The housing (holding wall) 5 is formed on the outer periphery of the battery holder 2 so as to rise from the bottom surface as an annular wall. The housing 5 is made of an insulating material. The button battery 1 fits in a region surrounded by the housing 5. The button battery 1 is prevented from being detached from the battery holder 2 by the housing 5, particularly in a direction parallel to the bottom surface.

  FIG. 5 is a perspective view showing an example of a state in which the button battery according to the present embodiment is mounted on the battery holder. Referring to FIG. 5, a state where the button battery 1 according to this embodiment is mounted on the battery holder 2 with the surface on the positive electrode 1 a side exposed is shown. The button battery 1 is accommodated in a region surrounded by the housing 5. Further, the button cell 1 is accommodated on the bottom side of the tip of the plus contact 4 extending in the center direction.

  The insulating rubber 6 attached to the button battery 1 is attached so that the positive electrode 1a and the positive contact 4 are brought into contact with each other to be conducted. More specifically, the insulating rubber 6 is positively connected by mechanical coupling so that at least a part of each of the surface of the button battery 1 where the positive electrode 1a is formed and the outer peripheral surface of the button battery 1 is exposed. It is attached to 1a. Although not shown in FIG. 5, the insulating rubber 6 is attached to the negative electrode 1b by mechanical coupling so as to have a region where at least a part of the back surface of the button battery 1 where the negative electrode 1b is formed is exposed. Yes.

  Further, the insulating rubber 6 attached to the button battery 1 fills a region D between the outer peripheral surface of the button battery 1 and the housing 5 corresponding to the gap B in FIG. Since the insulating rubber 6 is formed of an elastic material, the thickness of the region D to be filled can be widened.

  In addition, the width of the insulating rubber 6, which is perpendicular to the direction in which the insulating rubber 6 extends in a ring shape, in other words, the direction extending on the surface between the two outer peripheral portions of the button battery 1 is near the center of the button battery 1. A notch 6a is formed which becomes narrower. This structure is similarly formed on the back surface (not shown). The insulating rubber 6 has a structure that does not affect the sliding and contact of the negative contact 3 and the positive contact 4 of the battery holder 2 by providing such a relief portion by the notch 6a.

  FIG. 6 is a cross-sectional view showing an example of a state in which the button battery according to this embodiment is mounted on the battery holder. Referring to FIG. 6, there is shown a cross section of a region indicated by C-C extending through the plus contact 4 of FIG. 5 and extending substantially in the diameter direction of the button cell 1. The negative electrode 1b of the button battery 1 mounted on the battery holder 2 and the negative contact 3 are in contact with each other and are electrically connected. At that time, the button battery 1 receives a force pushed by the minus contact 3 in a direction away from the bottom surface of the battery holder 2. On the other hand, the positive electrode 1a and the positive contact 4 are in contact. The button battery 1 that receives the force from the negative contact 3 is pressed by the positive contact 4 and the housing 5. This prevents the button battery 1 from being detached from the battery holder 2.

  The insulating rubber 6 is mounted on the front surface (the positive electrode 1a) and the back surface (the negative electrode 1b), respectively. The insulating rubber 6 does not cover all of the button battery 1, but has a structure in which at least a part of each of the front surface, the outer peripheral surface, and the back surface is exposed and a structure having a notch 6a. Contact with the terminal of the battery holder 2 is not hindered. As described above, the insulating rubber 6 has a structure that does not affect the sliding and contacting of the negative contact 3 and the positive contact 4 of the battery holder 2.

  As described above, the insulating rubber 6 mainly has an action of preventing contamination on the front surface and the back surface of the button battery 1 and an action of preventing a looseness when loosely mounted on the battery holder 2 on the side surface. have.

  Next, a method for mounting the insulating structure according to the present embodiment on the button battery will be described in detail.

  First, the insulating rubber 6 is attached to the positive electrode 1a by mechanical coupling so that at least a part of each of the surface of the button battery 1 where the positive electrode 1a is formed and the outer peripheral surface of the button battery 1 is exposed. . This exposed region is in contact with the positive contact 4 and hits a conducting portion.

  Next, the insulating rubber 6 is attached to the minus electrode 1b by mechanical coupling so that at least a part of the back surface of the button battery 1 where the minus electrode 1b is formed is exposed. This exposed region is in contact with the negative contact 3 and hits a conducting portion.

  The insulating rubber 6 to be attached is provided with a notch 6a whose width is narrowed. The insulating rubber 6 is attached to the positive electrode 1a and the negative electrode 1b of the button battery 1 so that the notch 6a is near the center of the button battery 1. The insulating rubber 6 may have an annular structure in which a portion mounted on the positive electrode 1a side and a portion mounted on the negative electrode 1b side are connected.

  Next, a method for mounting the button battery with an insulating structure according to the present embodiment on the battery holder will be described in detail.

  An insulating rubber 6 is attached to the button battery 1 mounted on the battery holder 2 on the positive electrode 1 a side and the negative electrode 1 b side of the button battery 1. The button battery 1 is formed so that the exposed area on the positive electrode 1a side is electrically connected to the positive contact 4 of the battery holder 2, and the exposed area on the negative electrode 1b side of the button battery 1 is electrically connected to the negative contact 3 of the battery holder 2. The button battery 1 is mounted on the battery holder 2 formed.

  When the button battery 1 is handled with bare hands, the insulating rubber 6 prevents contact with the button battery 1. The insulating rubber 6 is mounted on the battery holder 2 as it is because the surface, outer peripheral surface, and part of the back surface of the button battery 1 are exposed. At that time, the notch (escape portion) 6a of the insulating rubber 6 is aligned with the positions of the negative contact 3 and the positive contact 4, so that the fitting and contact with the battery holder 2 is not hindered. And since the insulating rubber 6 has elasticity, it fills the clearance B with the battery holder 2 and prevents fine sliding wear of the contact due to vibration or the like. Even if the insulating rubber 6 fills the gap B in one place, the effect is exhibited. If the insulating rubber 6 fills the gap B at two locations and sandwiches the button battery 1, the effect is further enhanced. Since the insulating rubber 6 of the present embodiment has an annular structure, the gap B at two places is filled.

  The insulating structure according to the present embodiment, its mounting method, the button battery with the insulating structure, its mounting structure, and its mounting method have been described above.

  In the present embodiment, the configuration in which the insulating rubber is attached to the button battery enables the button battery to be handled with bare hands, and it is possible to prevent contamination of the electrode portion, adhesion of foreign matter, and oxidation. Have.

  Further, in the present embodiment, the configuration using the elastic material for the insulating rubber can fill the gap with the battery holder when the button battery is mounted, and prevent the fine sliding wear of the contact due to vibration or the like. It has the effect.

  In addition, in the present embodiment, the configuration in which the cut portion of the insulating rubber is provided has an effect that can be mounted without hindering the fitting and contact with the battery holder. In addition, the insulating rubber does not cover the entire periphery of the button battery, but has a wide application range to the battery holder due to the configuration in which the front surface, outer peripheral surface, and part of the back surface of the button battery are exposed, and high versatility. Has the effect of having sex.

  As described above, in the present embodiment, a button battery having higher contact reliability with the battery holder can be provided.

  The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Supplementary note 1) an elastic first insulator attached to the positive electrode of the button battery by mechanical coupling;
An elastic second insulator that is attached to the negative electrode of the button battery by mechanical coupling, and the first insulator comprises:
Provided so as to have a first exposed region in which at least a part of each of the first surface and the outer peripheral surface where the positive electrode is formed is exposed;
The second insulator is:
An insulating structure provided so as to have a second exposed region in which at least a part of the second surface on which the negative electrode is formed is exposed.

(Appendix 2) The insulating structure according to Appendix 1,
The first insulator has a recess for bringing the first electrode terminal formed on the battery holder into contact with the first exposed region when the button battery is mounted on the battery holder. And
An insulating structure having a recess for contacting the second electrode terminal formed on the battery holder and the second exposed region in the second insulator.

(Appendix 3) The insulating structure according to appendix 1 or 2,
A first insulator mounted such that the first exposed region includes a peripheral edge of the first surface;
An insulating structure comprising: a second insulator mounted so that the second exposed region includes a central portion of the second surface.

(Appendix 4) The insulating structure according to any one of appendices 1 to 3,
An insulating structure having an annular structure in which the first insulator and the second insulator are connected.

(Appendix 5) The insulating structure according to any one of appendices 1 to 4,
A button battery with an insulating structure, comprising a button battery.

(Appendix 6) A button battery with an insulating structure according to Appendix 5,
A button battery mounting structure comprising a battery holder.

(Appendix 7) The button battery mounting structure according to Appendix 6,
A button battery mounting structure in which the button battery is mounted on the battery holder via an insulating structure coupled to an outer peripheral surface of the button battery.

(Appendix 8) The button battery mounting structure according to appendix 7,
The button cell battery mounting structure is provided so that the insulating structure covers two locations on the outer peripheral surface.

(Appendix 9) The button battery mounting structure according to any one of appendices 6 to 8,
A button battery mounting structure comprising: the battery holder in which an electrode terminal is formed so as to avoid interference with the insulating structure when the button battery is mounted on the battery holder.

(Supplementary note 10) The button battery mounting structure according to supplementary note 9,
When the button battery is mounted on the battery holder, the first exposed area is in contact with the first electrode terminal formed on the battery holder, and the second exposed area is formed on the battery holder. A button battery mounting structure in which the first insulator is attached to the positive electrode and the second insulator is attached to the negative electrode so as to be in contact with the second electrode terminal.

(Supplementary Note 11) A step of attaching the first insulator to the positive electrode of the button battery by mechanical coupling;
Attaching a second insulator to the negative electrode of the button cell by mechanical coupling,
The step of mounting the first insulator includes:
Provided to have a first exposed region in which at least a part of each of the first surface and the outer peripheral surface where the positive electrode is formed is exposed;
The step of attaching the second insulator includes:
A method of attaching an insulating structure to a button battery provided to have a second exposed region in which at least a part of the second surface on which the negative electrode is formed is exposed.

(Supplementary Note 12) A step of mounting a button battery with an insulating structure on the battery holder is provided,
The battery holder is
A first exposed area of the button battery is in contact with the first electrode terminal of the battery holder, and a second exposed area of the button battery is formed in contact with the second electrode terminal of the battery holder;
The button battery with an insulating structure is:
A button battery mounting method, wherein a first insulator is attached to a positive electrode of the button battery, and a second insulator is attached to a negative electrode of the button battery.

1 Button battery 1a Positive electrode (positive electrode)
1b Negative pole (negative electrode)
2 Battery holder 3 Negative contact (negative electrode terminal)
4 Positive contact (positive terminal)
5 Housing (holding wall)
6 Insulation rubber (insulator)
6a notch B gap between the outer peripheral surface of the button battery 1 and the housing 5 D region between the outer peripheral surface of the button battery 1 and the housing 5

Claims (5)

An insulating structure attached to a button battery,
The button battery is
A circular first surface having a positive electrode;
A circular second surface having a negative electrode on a surface opposite to the first surface;
With
The insulating structure is
An elastic first insulator bonded to the first surface of the button battery, the first end having a width shorter than the diameter of the first surface and being part of the outer periphery of the first surface The first insulator extending from the first end to the second end opposite the first end through the central portion of the first surface;
A second end of the button battery that is bonded to the second surface of the button battery and has a width shorter than the diameter of the second surface and is located at a part of the outer periphery of the second surface. The second insulator extending from the central portion of the second surface to the fourth end portion opposite to the third end portion;
With
The first end and the second end of the first insulator have the same width;
The third end and the fourth end of the second insulator have the same width, and are at positions corresponding to the first end and the second end, respectively, on the outer periphery of the second surface; Along the side surface of the button cell, the first end and the second end of the first insulator are connected to each other,
A width of the first insulator is shorter than a width of the first end and the second end at a central portion of the first surface;
The width of the second insulator is shorter than the width of the third end portion and the fourth end portion at the central portion of the second surface.
Insulation structure. The width of the first insulator becomes narrower as it approaches the central portion of the first surface from the first end and the second end, and is the narrowest at the central portion of the first surface,
When the button battery is attached to the battery holder, the width of the second insulator is such that the negative contact of the battery holder can contact the second surface of the button battery. It narrows as it approaches the central portion of the second surface from the fourth end, and is narrowest at the central portion of the second surface.
The insulating structure according to claim 1. The insulating structure according to claim 1 or 2,
Button battery and
A button battery with an insulating structure. A button battery with an insulating structure according to claim 3,
With battery holder
A button battery mounting structure comprising: A method of attaching an insulating structure to a button battery,
The button battery is
A circular first surface having a positive electrode;
A circular second surface having a negative electrode on a surface opposite to the first surface;
With
The mounting method of the insulating structure is as follows:
A first mounting step of bonding an elastic first insulator to the first surface of the button cell;
A second mounting step of bonding an elastic second insulator to the second surface of the button cell;
Connecting the first insulator and the second insulator along a side surface of the button battery;
With
The first insulator has a width shorter than the diameter of the first surface, and passes through a central portion of the first surface from a first end located at a part of an outer periphery of the first surface. And to the second end at the opposite electrode,
The first end and the second end of the first insulator have the same width;
The second insulator has a width shorter than the diameter of the second surface, and passes through a center portion of the second surface from a third end portion at a part of the outer periphery of the second surface, and then the third end portion. And extended to the fourth end at the opposite electrode,
The third end and the fourth end of the second insulator have the same width, and are at positions corresponding to the first end and the second end, respectively, on the outer periphery of the second surface;
In the step of connecting the first insulator and the second insulator,
Along the side surface of the button battery, the third end and the fourth end of the second insulator are connected to the first end and the second end of the first insulator, respectively.
The width of the first insulator bonded to the first surface in the first mounting step is shorter than the width of the first end and the second end at the center of the first surface,
The width of the second insulator bonded to the second surface in the second mounting step is shorter than the width of the third end portion and the fourth end portion at the center portion of the second surface.
How to install the insulation structure.

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