JP2013164925A - Insulation sheet for button cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation sheet for a button cell which is not pulled out easily, and insulates between the button cell and a power supply terminal on the apparatus side reliably.SOLUTION: The insulation sheet for a button cell includes an insulation piece placed in the battery housing section of a battery holder for housing a button cell when being mounted on a flange, and insulating between the electrode of the button cell and a power supply terminal projecting into a power supply connection recess into which the battery holder is inserted, a pull-out piece being pulled outward of the battery holder, and a coupling piece for coupling the insulation piece and the pull-out piece integrally. Both sides of the coupling piece incline to the inside toward the pulling direction, and slide on the inner wall surface of the flange.

Description

  The present invention relates to a button battery insulating sheet that insulates a button battery from a power terminal on the device side before using the device using the button battery as a power source. More specifically, the present invention relates to a button battery positioned and contained in a battery holder. The present invention relates to an insulating sheet for a button battery that insulates an electrode from a power supply terminal facing a power supply connection recess into which a battery holder is inserted.

  Electronic devices such as remote control transmitters and electronic notebooks that operate using a button battery as a power source have a small button battery and it is difficult to determine the exposed positions of the positive and negative electrodes. Place the insulation sheet between the button battery and the power terminal in a normal connection posture in the power connection recess on the device side where the negative power terminal faces, and the button battery electrode will be the power terminal until the device is used. This prevents the button battery from being consumed. The user who uses the device for the first time after purchasing the device, pulls out the lead-out portion of the insulation sheet drawn outward from the power connection recess, removes the insulation sheet between the button battery electrode and the power supply terminal, and connects them together. The device is activated using a button battery as a power source (for example, Patent Document 1).

  In the insulating sheet described in Patent Document 1, the insulating piece on the front end side of the band-shaped insulating sheet is disposed between the button battery and the power terminal in the power connection concave portion, and the insulating piece portion in the power connection concave portion Whether or not it is arranged at an insulating position cannot be visually confirmed hidden behind the button battery. Therefore, it is necessary to check whether or not the device is insulated by the insulating sheet in an operating state with the power switch turned on, and an extra inspection process is added when the device is shipped.

  On the other hand, since it is difficult to install a small button battery directly in the power connection recess on the device side, a battery holder that positions and stores the button battery in the battery housing portion is inserted into the power connection recess on the device side, A button battery connection structure in which an electrode of a button battery exposed from a battery housing portion is connected to a power supply terminal facing in a connection recess is known from Patent Document 2 and the like. In such a connection structure, the insulating sheet arranged along the bottom surface of the battery holder is inserted into the power connection recess together with the battery holder, and the button battery exposed from the power receiving terminal exposed in the power connection recess and the battery holder of the battery holder is inserted. An insulating sheet is arranged between the electrodes to insulate them. However, the insulating sheet inserted into the power connection recess together with the battery holder remains in the pulling direction due to friction with the inner bottom surface of the power connection recess and may not be inserted between the button battery and the power terminal. Therefore, in the connection structure shown in Patent Document 2, the insulating sheet is folded back to the flat side of the button battery and inserted into the power connection recess together with the battery holder so that the insulating sheet is disposed between the button battery and the power terminal. ing.

  Hereinafter, the structure that insulates between the negative electrode 10a of the button battery 10 and the negative power supply terminal 22a on the device side by the conventional insulating sheet 100 will be described in detail with reference to FIGS. The outer shape of the button battery 10 is a disc shape, and the positive electrode 10b is exposed on the entire plane and side surfaces, and the negative electrode 10a is exposed on the entire bottom surface that is spaced apart from the positive electrode 10b. The battery holder 11 is formed with a battery accommodating portion 12 for positioning and accommodating the button battery 10, and the button battery 10 is formed on the flange portion 13 projecting in a fan shape along the inner surface of the cylindrical battery accommodating portion 12. Is positioned and accommodated.

  The insulation sheet 100 formed in a band shape is folded back from the bottom surface side of the battery holder 11 to the flat surface side of the button battery 10 positioned and accommodated in the battery holder 11, and is connected to the power connection recess of the device together with the battery holder 11. 21 is inserted. When the battery holder 11 is inserted into the power connection recess 21, the insulating sheet 100 slides along the inner bottom surface of the power connection recess 21, so that a frictional force acting in the pulling direction (right side in FIG. 9) is exerted. However, the front end side of the button battery 10 that is folded back to the plane side slides along the inner top surface of the power connection recess 21 to receive a reverse frictional force, and cancels out together with the battery holder 11 to a predetermined position. Can be inserted.

  As a result, as shown in FIG. 9, the insulating sheet 100 is disposed between the negative electrode 10 a on the bottom surface side of the button battery 10 and the negative power supply terminal 22 a exposed on the inner bottom surface of the power connection recess 21, and both are reliably insulated. The Further, since the insulating sheet 100 is disposed in the power connection recess 21 in a state of being folded back from the plane of the battery holder 11 along the bottom surface, an unintentional drawer is provided in the drawer piece 100a that is pulled out from the power connection recess 21. Even if a directional force is applied, it is not easily pulled out from the power connection recess 21 and the insulation from the button battery 10 is reliably maintained.

Japanese Patent No. 3519988 JP-A-6-267521

  Since the conventional insulating sheet described in Patent Document 1 is easily inadvertently pulled out from the power connection recess, and it is unknown whether it is disposed between the button battery electrode and the power terminal in the power connection recess. It is necessary to confirm the insulation state by performing the starting operation.

  Further, since the above-described conventional insulating sheet 100 needs to be inserted into the power connection recess 21 together with the battery holder 11 while keeping the insulating sheet 100 folded back at the distal end side in the insertion direction, it is set in the battery holder 11 in advance. It can not be kept, insertion work is also troublesome.

  In addition, since the length to be folded back cannot be adjusted, the length inserted into the power connection recess is not constant, and similarly it is not known whether the button battery and the power terminal are insulated in the power connection recess. It is necessary to check whether the device operates by turning on the power switch.

  Further, since the insulating sheet 100 is folded back at the front end side of the button battery 10, when the positive power supply terminal 22 b for connecting to the positive electrode 10 b of the button battery 10 faces the inner back surface of the power connection recess 21, the device The insulating sheet 100 is interposed for a long period of time until it is used, and the positive power supply terminal 22b may be bent excessively, and the contact pressure to the positive electrode 10b may be reduced due to fatigue.

  The present invention has been made in consideration of such conventional problems, and provides an insulating sheet for a button battery that reliably insulates between the button battery and the power supply terminal on the device side without easily pulling out the insulating sheet. The purpose is to do.

  It is another object of the present invention to provide a button battery insulating sheet that can be inserted into a power connection recess of an apparatus with one hand together with a battery holder that positions and accommodates a button battery.

  In order to achieve the above-described object, the button battery insulating sheet according to claim 1 is placed on a fan-shaped flange portion protruding along the inner wall surface of the cylindrical battery accommodating portion of the battery holder, and accommodates the battery. The button battery is placed between the button battery positioned and housed in the power supply terminal and the power terminal facing the power connection recess into which the battery holder of the apparatus using the button battery as a power source is inserted. Insulation sheet for a button battery that insulates between the power terminal and the power supply terminal, and is disposed in the battery housing portion of the battery holder by placing both side portions wider than the inner diameter of the flange portion on the flange portion, and the flange portion The electrode on the bottom side of the button battery exposed to the inside of the battery, the insulating piece that insulates between the power terminals facing the electrode and projecting from the inner bottom surface of the power connection recess, and narrower than the inner diameter of the flange, Holder And a connecting piece for connecting the insulating piece and the drawing piece together, and both sides of the connecting piece are arranged in the drawing direction. It becomes an inclination line which inclines inward toward the surface, and is in sliding contact with the inner wall surface of the flange portion.

  Since both sides of the insulating piece are mounted on the flange portion, the inner wall surface of the cylindrical battery housing portion is provided between the electrode on the bottom surface side of the button battery and the power supply terminal protruding from the inner bottom surface of the power connection recess. It is positioned at a position interposed between the two to reliably insulate them.

  In addition, since both sides of the insulation piece are sandwiched between the button battery and the flange, and the insulation sheet is temporarily held by the battery holder, the insulation sheet is also connected to the power supply simultaneously by inserting the battery holder into the power connection recess. It arrange | positions in a recessed part.

  In addition, the insulating piece part is sandwiched between the button battery and the flange part, and the connecting piece part is in sliding contact with the inner wall surface of the flange part. Is not pulled out of the power connection recess.

  When the drawer piece part is pulled out with a predetermined pulling operation force, both sides of the connecting piece part are in sliding contact with the inner wall surface of the flange part, and the insulating piece part to be connected together is twisted and guided to the bottom side of the battery holder. It is pulled out from between the bottom surface of the holder and the inner bottom surface of the power connection recess.

  The button battery insulating sheet according to claim 2 is characterized in that the tip of the insulating piece abuts against the inner wall surface of the battery accommodating portion and is positioned on the battery holder.

  When the tip of the insulating piece is placed in contact with the inner wall surface of the battery housing portion and placed in the battery housing portion, the insulating piece portion is connected to the electrode on the bottom side of the button battery when the battery holder is inserted into the power connection recess of the device. Securely placed between power terminals.

  In the button battery insulating sheet according to claim 3, a predetermined identification mark representing a part to be drawn out from the battery holder at a position where the insulating piece portion is arranged in the battery housing portion is displayed on the drawing piece portion. It is characterized by.

  When the insulating sheet for a battery is pulled out in a pulling direction from a normal arrangement position where the insulating piece is disposed in the battery accommodating portion, a portion where an identification mark is not displayed on the pulling piece appears.

  According to the first aspect of the present invention, since the insulating sheet is positioned with respect to the battery holder before being inserted into the power connection recess without being folded back to the flat surface side of the button battery, the button battery and the power terminal on the device side are easily provided. They can be placed between them to insulate them.

  In addition, while the power supply connection recess is arranged, the insulation sheet does not come out carelessly because it cannot be pulled out unless an operation force in a certain pulling direction is applied to the drawer piece.

  Since the insulation sheet is not folded back to the flat side of the button battery and is not interposed between the insertion direction side of the button battery or the positive side power terminal protruding from the flat side, the positive side power terminal is bent by the insulation sheet before using the device. It ’s hard to get tired.

  According to the invention of claim 2, without considering the length of the insulating sheet disposed in the power connection concave portion, the insulating piece portion can be obtained by merely bringing the tip of the insulating piece portion into contact with the inner wall surface of the battery housing portion. Is reliably arranged between the electrode on the bottom side of the button cell and the power supply terminal.

  According to the invention of claim 3, the battery holder is inserted into the power connection recess without sufficiently placing the insulating piece portion in the battery housing portion, or the drawing piece is unintentionally pulled out from the normal arrangement position. This can be confirmed from the fact that a part where no identification mark is displayed appears between the battery holder and the battery holder.

It is a perspective view which shows the state which has arrange | positioned the button battery insulation sheet 1 which concerns on 1st Embodiment of this invention to the battery holder 11. FIG. It is a top view of the insulation sheet 1 for button batteries. It is a top view of the battery holder 11 which has arrange | positioned the insulating sheet 1 for button batteries. FIG. 3 is a longitudinal sectional view showing a state in which the button battery insulating sheet 1 is disposed in the battery holder 11. FIG. 3 is a perspective view showing a state in which the button battery insulating sheet 1 and the button battery 10 are accommodated in the battery holder 11. FIGS. 5A and 5B show a state where the battery holder 11 shown in FIG. 5 is inserted into the power connection recess 21 on the device side, where FIG. 5A is a perspective view and FIG. 5B is a longitudinal sectional view. It is a perspective view which shows the state which pulled out the insulation sheet 1 for button batteries from the power connection recessed part 21. FIG. It is a top view which shows the state which has arrange | positioned the conventional insulation sheet 100 for button batteries to the battery holder 11. FIG. It is a longitudinal cross-sectional view which shows the state which has arrange | positioned the button battery insulation sheet 100 between the button battery 10 and the power supply terminals 22a and 22b.

  A button battery insulating sheet 1 (hereinafter referred to as an insulating sheet 1) according to an embodiment of the present invention includes a battery holder 11 for positioning and housing a button battery 10 inserted in a power connection recess 21 on the device side, FIG. First, each structure of the connection structure will be described with reference to FIGS. 1 and 3 to 6 in which the same numbers are assigned. In the following description, the insertion direction in which the battery holder 11 is inserted into the power connection recess 21 will be described as the front, and the direction in which the battery holder 11 is pulled out will be described as the rear.

  As shown in FIG. 1, the battery holder 11 has a rectangular parallelepiped handle 11a and a pair of arm portions 11b and 11b protruding forward from the handle 11a, which are integrally formed of an insulating synthetic resin. The handle 11 a is larger than the opening edge 21 b of the power connection recess 21 that opens on the side surface of the housing 20 of the device, and contacts the peripheral edge of the power connection recess 21 when the pair of arm portions 11 b and 11 b are inserted into the power connection recess 21. The battery holder 11 after being inserted into the power connection recess 21 can be pulled out.

  The opposing surfaces of the pair of arm portions 11b and 11b are formed with concavely curved inner wall surfaces 12a and 12a that constitute part of a cylindrical surface on which the outer surface of the button battery 10 is loosely fitted. The enclosed inner side serves as a battery accommodating portion 12 that positions and accommodates the button battery 10. Further, a fan-shaped flange portion 13 for placing the periphery of the bottom surface of the button battery 10 is provided on the circumference along the lower end of each inner wall surface 12a, 12a so as to project toward the center of the circumference. The height of the inner wall surfaces 12a, 12a from the plane of the flange portion 13 is substantially equal to the height of the button battery 10, and accordingly, the plane of the button battery 10 placed on the fan-shaped flange portion 13 and the arm portion 11b, The button battery 10 is positioned and accommodated in the battery accommodating portion 12 in a state where the plane of 11b continues on substantially the same plane.

  As described above, in the button battery 10, the positive electrode 10 b is exposed on the disk-shaped flat surface and the side surface, and the negative electrode 10 a is exposed on the entire bottom surface that is spaced from the positive electrode 10 b. In the button battery 10 housed in the housing portion 12, the negative electrode 10a on the bottom surface is exposed below the pair of arm portions 11b and 11b, and the positive electrode 10b is exposed on the plane side and the front between the pair of arm portions 11b and 11b. .

  Engagement recesses 14 and 14 that engage with engagement ribs 21a and 21a that protrude from the inner surface of the power connection recess 21 are respectively provided on the outer surfaces of the pair of arm portions 11b and 11b. By engaging with 21a, the battery holder 11 inserted into the power connection recess 21 is positioned in the inserted state.

  The power connection recess 21 opened on the side surface of the device housing 20 is formed to a size that allows the pair of arm portions 11b, 11b of the battery holder 11 to be loosely fitted, and the housing 20 on the inner bottom surface and the front inner back surface. Further, the base ends of the negative power supply terminal 22a and the positive power supply terminal 22b, each of which is made of a leaf spring piece, are integrally fixed. The free end side of the negative power terminal 22a is elastically in contact with the negative electrode 10a of the button battery 10 exposed below the pair of arm parts 11b, 11b of the battery holder 11 inserted into the power connection recess 21. It protrudes upward from the inner bottom surface of the connection recess 21, and the free end side of the positive power supply terminal 22 b is also inwardly in contact with the positive electrode 10 b exposed forward from between the pair of arm portions 11 b, 11 b. Projects backward from the surface.

  As shown in FIG. 2, the insulating sheet 1 has a width between both sides of a pentagonal outline along the fan-shaped flange portion 13 of the battery holder 11 substantially equal to the diameter of the button battery 10, and both side portions 2a, 2a. Is disposed on each flange portion 13, 13, so that the insulating piece portion 2 spanned between the flange portions 13, 13 of the pair of arm portions 11 b, 11 b and a rectangle narrower than the diameter of the button battery 10. The drawer piece portion 3 is formed, and the front insulating piece portion 2 and the connecting piece portion 4 that integrally connects the rear draw piece portion 3 are formed. The both sides of the drawing piece 3 that is narrower than the insulating piece 2 and the insulating piece 2 are continuous by the two sides of the connecting piece 4 that are straight inclined lines 4a.

  The insulating sheet 1 is formed of PET (polyethylene terephthalate) which is flexible and does not easily break even when subjected to a tensile stress in the longitudinal direction. For example, a synthetic paper reinforced by combining PP (polypropylene) with paper fibers. Or the like.

  Band-shaped identification marks 5 and 5 are printed on the plane of the drawer piece 3 along both sides from the rear end. In the state shown in FIG. 5 in which the insulating side portion 2 of the insulating sheet 1 is disposed in the battery housing portion 12, the identification mark 5 is aligned with the rear end portion of the battery holder 11 and the front end 5a of the identification mark 5 in the front-rear direction. It is printed to do. Therefore, when the insulating sheet 1 is pulled out from the normal arrangement position where the insulating side 2 is arranged in the battery housing part 12, the gap between the rear end of the handle 11 a of the battery holder 11 and the front end 5 a of the identification mark 5 is A gap in which the identification mark 5 is not displayed appears, and it is possible to know that the insulating sheet 1 has been pulled out unintentionally by the occurrence of this gap.

  The insulating sheet 1 formed in this way is used to insulate between the negative electrode 10a of the button battery 10 and the negative power supply terminal 22a on the device side before use of the device. This will be described with reference to FIG.

  First, as shown in FIGS. 1 and 3, the insulating sheet 1 is placed on the battery holder 11. In this arrangement work, the lead-out piece 3 of the insulating sheet 1 is inserted into the battery housing portion 12 from above and pulled out rearward along the bottom surface of the handle 11a, and the two-side pieces 2a and 2a are respectively placed on the flange portions 13 and 13. The insulating piece 2 is spanned between the flange portions 13 and 13 of the pair of arm portions 11b and 11b. When the both side pieces 2a, 2a of the insulating piece 2 are arranged on the flanges 13, 13, the front edge of the insulating piece 2 abuts against the inner wall surfaces 12a, 12a of the concave curved surface, and forwards the insulating sheet 1. Movement is restricted. When the insulating piece portion 2 is arranged in the battery housing portion 12 and the drawer piece portion 3 is drawn from the bottom of the handle 11a to the rear side from above, both sides of the connecting piece portion 4 represented by the outline of the inclined line 4a. Are in contact with the inner surfaces of the flange portions 13 and 13 in a posture in which they are inclined downward toward the rear.

  Subsequently, as shown in FIG. 4, the button battery 10 is accommodated in the battery accommodating portion 12 from above the battery accommodating portion 12 in which the insulating piece portion 2 is disposed. Since the bottom side periphery of the button battery 10 is placed on the flange portions 13, 13, the both side pieces 2 a, 2 a of the insulating piece portion 2 are located between the plane of the flange portions 13, 13 and the bottom surface of the button battery 10. The insulating sheet 1 that is sandwiched between and disposed on the battery holder 11 is positioned.

  Accordingly, as shown in FIG. 5, the button battery 10 and the insulating sheet 1 can be integrally held in the battery holder 11 before being inserted into the power connection recess 21 on the device side. The button battery 10 and the insulating sheet 1 can be brought into the power connection recess 21 simply by inserting the pair of arms 11b and 11b into the power connection recess 21 while holding the handle 11a of the battery holder 11 on which the insulation sheet 1 is disposed. Can be inserted. In the process of inserting the arm portions 11b, 11b of the battery holder 11 into the power connection recess 21, the insulating sheet 1 in which the lead piece 3 is arranged along the bottom surface of the battery holder 11 is composed of the negative power terminal 22a and the power connection recess. 21 is in contact with the inner bottom surface and receives a rearward frictional force. Both side pieces 2a and 2a of the insulating piece 2 are sandwiched between the flat surfaces of the flange portions 13 and 13 and the bottom surface of the button battery 10. Since the both sides of the connecting piece 4 are in contact with the inner surfaces of the flange portions 13 and 13, the position does not shift backward.

  As shown in FIGS. 6A and 6B, when the handle 11 (a) of the battery holder 11 is inserted into the power connection recess 21 until it contacts the casing 20 around the power connection recess 21, the battery holder 11 Engaging ribs 21a and 21a projecting from the inner surface of the power connection recess 21 are engaged with the engaging recesses 14 and 14 on the side, and the battery holder 11 is positioned at the insertion position.

  After the device is shipped, until the device is used for the first time by the user, the battery holder 11 is held inserted. In this state, the positive power supply terminal 22b protruding from the inner back surface of the power connection recess 21 is An insulating sheet is provided between the negative electrode power supply terminal 22a protruding upward from the bottom surface and the negative electrode 10a on the bottom surface of the button battery 10 in elastic contact with the positive electrode 10b of the button battery 10 exposed forward between the arm portions 11b and 11b. The two insulating pieces 2 are interposed to insulate them from each other.

  Whether or not the insulating piece portion 2 of the insulating sheet 1 is disposed between the negative electrode power supply terminal 22a and the negative electrode 10a of the button battery 10 is determined by an identification mark displayed on the handle 11a and the drawn piece portion 3 drawn backward from the handle 11a. 5 is determined based on the presence or absence of a gap with the front end 5a. When the insulating sheet 1 is drawn backward from a predetermined position where the front edge of the insulating piece portion 2 of the insulating sheet 1 contacts the inner wall surfaces 12a, 12a of the battery housing portion 12, the front end 5a of the identification mark 5 is the handle. Since it leaves | separates from 11a, the operation | work which pulls out the battery holder 11 and arranges the insulating sheet 1 and the button battery 10 in the battery holder 11 again is repeated.

  When the device is used by a user, the user has the drawer piece 3 that is pulled out rearward from the handle 11a and pulls out the insulating sheet 1 from the battery holder 11 as shown in FIG. In this pulling-out operation, both side sides of the connecting piece portion 4 that becomes narrow at the inclined line 4a toward the pulling-out direction are pulled out rearward while being in sliding contact with the inner wall surface of the flange portion 13, and have a large width continuous in front thereof. Since the insulating piece portion 2 is guided to the lower side of the flange portion 13 while being twisted, a large tensile stress is not generated in the connecting piece portion 4, and therefore, the insulating sheet portion 1 is not broken and the insulating piece portion 2 is connected to the power connection concave portion 21. Can be pulled out from the battery holder 11 inserted in the battery pack 11.

  When the insulating sheet 1 is pulled out from the battery holder 11, the negative power source terminal 22 a comes into elastic contact with the negative electrode 10 a of the button battery 10 facing downward between the arms 11 b and 11 b, and power is supplied from the button battery 10 to the device.

  In the above-described embodiment, the outline of the insulating piece portion 2 of the insulating sheet 1 spanned over the flange portions 13 and 13 is pentagonal according to the curvature of the fan-shaped flange portion 13, but the both side piece portions 2 a and 2 a are If it is the shape arrange | positioned on the flange parts 13 and 13, it can be set as the shape of arbitrary outlines.

  Further, the positive power terminal 22 b protruding into the power connection recess 21 may protrude from the inner top surface of the power connection recess 21 and contact the positive electrode 10 b exposed on the flat surface of the button battery 10.

  The space surrounded by the inner wall surfaces 12a and 12a of the pair of arm portions 11b and 11b is the cylindrical battery housing portion 12 of the battery holder 11. However, a cylindrical hole is formed in the plate-like case, and the cylindrical hole It is good also as a battery accommodating part. In the button battery 10 positioned and accommodated in such a battery accommodating portion, the positive electrode 1b is exposed only on the flat surface side, so that the positive electrode power terminal 22b protrudes from the inner top surface of the power connection recess 21 as described above.

  The present invention is suitable for insulation from the power terminal of the button battery that is positioned and accommodated in the battery holder and connected to the power terminal facing the power connection recess of the device into which the battery holder is inserted.

DESCRIPTION OF SYMBOLS 1 Insulation sheet | seat for button batteries 2 Insulation piece part 2a Side piece part 3 Drawer piece part 4 Connection piece part 4a Inclined line 5 Identification mark 10 Button battery 10a Positive electrode (electrode)
DESCRIPTION OF SYMBOLS 11 Battery holder 12 Battery accommodating part 12a Inner wall surface of a battery accommodating part 13 Flange part 21 Power supply connection recessed part 22a Negative side power supply terminal (power supply terminal)

Claims (3)

A button battery placed on a fan-shaped flange projecting along an inner wall surface of a cylindrical battery housing portion of the battery holder and positioned and housed in the battery housing portion, and a device using the button battery as a power source A button battery insulating sheet that is disposed between a power terminal facing a power connection recess into which the battery holder is inserted and that insulates between the button battery electrode and the power terminal before use of the device. There,
Both side portions wider than the inner diameter of the flange portion are placed on the flange portion so as to be disposed in the battery accommodating portion of the battery holder, and are exposed on the bottom surface side of the button battery exposed inside the flange portion. An electrode, and an insulating piece that insulates between the power supply terminals projecting from the inner bottom surface of the power supply concavity facing the electrode,
A drawer piece portion that is narrower than the inner diameter of the flange portion and is drawn outward from between the bottom surface of the battery holder and the inner bottom surface of the power connection recess,
Comprising an insulating piece and a connecting piece for integrally connecting the drawer piece;
The insulating sheet for a button battery, characterized in that both side sides of the connecting piece part are inclined lines that inwardly incline toward the pulling direction, and are in sliding contact with the inner wall surface of the flange part. The button sheet insulating sheet according to claim 1, wherein a tip of the insulating piece is in contact with an inner wall surface of the battery housing portion and is positioned on the battery holder. The predetermined identification mark showing the site | part pulled out from the said battery holder in the arrangement | positioning position where the said insulation piece part is arrange | positioned in the said battery accommodating part is displayed on the said drawing piece part. Or the insulating sheet for button batteries of any one of Claim 2.

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