JP2012160305A - Battery adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery adapter by which a plurality of small standard batteries can be used as a large standard battery.SOLUTION: In a battery adapter, a small standard battery with a small count can be used as a substitution of a large standard battery with a large count. The battery adapter comprises: a cylindrical case body 3 formed into a shape approximately identical to that of the large standard battery, and comprising an upper half 1 and a lower half 2 swinging around a hinge part 4 on one side and capable of being opened/closed; and an anode toll 5 and a cathode tool 6 provided at both ends 3A and 3B in a shaft center direction of the case body 3 and contacting a plus electrode and a minus electrode of the small standard battery. The case body 3 can house the plural small standard batteries parallely.

Description

  The present invention relates to a battery adapter.

  Conventionally, the applicant of the present application has proposed a battery adapter for using a small (small) standard battery as a substitute for a large (large) standard battery (see Patent Document 1).

JP 2002-63879 A

  However, the conventional battery adapter has a case shape that is substantially the same as that of a large standard battery. However, since only one small standard battery can be stored inside, the electric capacity is smaller than that of a large standard battery. There was a problem that the battery could not be used immediately.

  Therefore, an object of the present invention is to provide a battery adapter that can use a plurality of small standard batteries as large standard batteries.

  The battery adapter according to the present invention is a battery adapter that enables a small standard battery with a small count to be used as a substitute for a large standard battery with a large count, and is formed to be substantially the same as the shape of the large standard battery and on one side A cylindrical case body composed of an upper half body and a lower half body swingable around a hinge part on the side, and a positive electrode and a negative electrode of the small standard battery attached to both ends in the axial center direction of the case body A positive electrode device and a negative electrode device that are in contact with the electrodes are provided, and the case main body can accommodate a plurality of the above-mentioned small standard batteries in parallel.

Further, the upper half, the lower half, and the hinge portion are made of a plastic integrally molded product, and the hinge portion is formed in a bent thin piece.
The small standard battery is an AA battery, and the large standard battery is an AA battery, and the case body can accommodate up to three small standard batteries. is there.
The upper half body and the lower half body are provided with ribs for holding the small standard battery so as not to move in the case body.
Further, the case body is provided as a rib, protruding in the axial direction on the inner surface of the bottom wall portion of the lower half body, and having a protruding portion standing at an inner peripheral intermediate position of the lower half body, and And a plurality of support pieces that protrude from the left and right inner surfaces of the upper half in the cross-sectional direction and that form a recess at an intermediate position on the inner periphery of the upper half.

In addition, the positive electrode tool includes a conductor whose contact surface protrudes from one end of the case body, and a plurality of penetrating holes that hold the conductor and contact the conductor as a plus electrode of the small standard battery. A mounting plate portion having a hole, and the mounting plate portion forms a guide inclined surface portion in a vertical direction at a side edge of the through hole.
Further, the case main body has a window portion for battery extrusion penetrating the bottom wall portion of the lower half near the one end portion to which the positive electrode tool is attached.

Further, the negative electrode tool has a conductor whose contact surface is exposed at the other end of the case body, and a coil spring-like electrical connection terminal that holds the conductor and is attached to the conductor as a plurality of insertions. A mounting plate having a plurality of through-holes that are in contact with the negative electrode of the small standard battery, and the electrical connection terminal is formed so as to gradually decrease in diameter toward the tip.
The negative electrode tool has a protrusion for preventing misalignment at the center of the mounting plate.
Further, the negative electrode tool is provided with two projections for taking out the protrusion in the vicinity of the peripheral edge of the mounting plate portion.

  According to the battery adapter of the present invention, it is possible to perform electrical work equivalent to that of a large standard battery with a plurality of small standard batteries. In addition, the battery can be easily attached and removed, which is convenient.

It is the perspective view which showed one Embodiment of this invention. It is a top view which shows the open state of a case main body. It is a section front view of a case body. It is a cross-sectional front view which shows the battery adapter of use condition. It is a cross-sectional side view which shows the battery adapter of use condition. It is the principal part enlarged rear view which showed the positive electrode tool. It is sectional drawing which showed the through-hole of the positive electrode tool, (a) is XX sectional drawing of FIG. 6, (b) is YY sectional drawing of FIG. It is the principal part enlarged front view which showed the positive electrode tool. It is ZZ sectional drawing of FIG. It is a simplified explanatory view showing a large standard battery and a small standard battery.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
As shown in FIG. 10, for example, when the small standard battery B ₃ is an AA battery and the large standard battery B ₁ is an AA battery, the small standard battery B ₃ dimensioned H ₃ is less than the height dimension H ₁ of a large standard battery B _1, also a diameter R ₃ is set smaller than the diameter R ₁ of a large standard battery B _1. For this reason, the battery adapter of the present invention fills the battery housing part of the electrical product to be used with the large standard battery B ₁ , and replaces the small standard battery B ₃ with a small count with the large standard battery B _{1 with a} large count. and it can be used as is for taking out electricity from the positive electrode 15 and the negative electrode 16 of the small standard battery B _3.
As shown in FIGS. 1 to 4, the battery adapter of the present invention is formed substantially the same as the shape of the large standard battery B ₁ and swings around the hinge portion 4 on one side to open and close. Cylindrical case body 3 composed of half body 1 and lower half body 2 and positive electrode attached to both axial ends 3A and 3B of case body 3 and in contact with plus electrode 15 and minus electrode 16 of small standard battery B ₃ ingredients 5 and a negative electrode member 6, provided with the case main body 3 is configured to compact standard batteries B ₃ a plurality of as can be stored in parallel form.

The upper half 1, the lower half 2, and the hinge portion 4 are made of an integrally molded plastic product, and the hinge portion 4 is formed in a bent thin piece.
The case body 3 is preferably transparent so that it can be easily confirmed from the outside (visually) that the small standard battery B ₃ is accommodated. The case body 3 can store up to three small standard batteries B ₃ (AA batteries).
The upper half 1 is formed in a semi-cylindrical shape, and semicircular cutouts 1A and 1B are formed on the semicircular front and rear walls at both ends in the longitudinal direction (axial center direction of the case body 3). ing.
The lower half body 2 is formed in a semi-cylindrical shape, and semicircular cutout portions 2A and 2B are formed on the semicircular front and rear walls at both ends in the longitudinal direction (the axial center direction of the case body 3). ing. The side corresponding to the plus electrode 15 of the small standard battery B ₃ to be accommodated is defined as the front direction, and the side corresponding to the minus electrode 16 is defined as the rear direction.
In a state in which the upper half 1 and the lower half 2 are closed (hereinafter referred to as a closed state), the hinge portion 4 is elastically deformed, and in a direction to open the upper half 1 and the lower half 2 (with a small force). ) The bullet is energized. In the closed state, circular holes are formed in both end portions 3A and 3B of the case body 3 by the notches 1A and 1B of the upper half 1 and the notches 2A and 2B of the lower half 2.
A locking hole 14 is provided on the other side of the upper half 1, and an elastic tongue 13 protrudes integrally on the other side of the lower half 2. By engaging the locking claw 13a of the piece 13 with the locking hole 14, the closed state of the upper half 1 and the lower half 2 is maintained.

The upper half 1 and the lower half ₂ are provided with ribs A ₁ and A ₂ for holding the small standard battery B ₃ so as not to move in the case body 3.
With this configuration, the three small standard batteries B ₃ , B ₃ , B ₃ housed in the case body 3 are prevented from moving in the axial direction.
Specifically, the case main body 3 protrudes in the axial direction on the inner surface of the bottom wall portion 20 of the lower half body 2 as the rib A ₁ and protrudes to the inner peripheral intermediate position C ₂ of the lower half body 2. The part 21 is erected. A plurality of support pieces 10 are formed on the inner surface of the upper half 1 as ribs A _{2 so} as to protrude from the left and right in the cross-sectional direction and form a recess 7 at an inner peripheral intermediate position C ₁ of the upper half 1. It has.
The protruding portion 21 is formed in a vertical wall shape that is continuous in the front-rear direction of the lower half body 2, has an upper end edge 22 at the center in the left-right direction of the lower half body 2, and extends the space above the bottom wall portion 20 in the left-right direction. Divide evenly.
In the open state of the upper half 1 and the lower half 2, the case main body 3 has one small standard battery B ₃ (AA type) in the space on the right and left sides of the protruding portion 21 of the lower half 2. And another small standard battery B ₃ is mounted on the small standard batteries B ₃ and B ₃ arranged on the left and right sides (on the bottom wall portion 20 of the lower half 2). It is configured so that it can be placed. When the upper half 1 and the lower half 2 are closed, the three small standard batteries B ₃ , B ₃ , B ₃ stacked on the bottom wall portion 20 of the lower half 2 are attached to the support piece 10. ... is sandwiched from above and held in the case body 3 so as not to move.

As shown in FIGS. 5 and 6, the positive electrode device 5 includes a conductor 8 whose electric contact surface 8 </ b> A protrudes from one end ₃ </ b> A of the case body 3, a positive electrode of the small standard battery B ₃ while holding the conductor 8. And a mounting plate portion 17 having a plurality of through-holes 27 that are in contact with the conductor 8.
The positive electrode device 5 is a flat plate-type common electrode that is mounted in a (front) hole of the case body 3, and includes three small standard batteries B ₃ , B ₃ , B ₃ housed in the case body ₃ . The plus electrodes 15 are in contact with the conductor 8.
The conductor 8 is fixed to the one end 3 </ b> A of the case body 3 by being fitted into the notch 2 </ b> A of the lower half 2 and being locked to the mounting plate 17 from the back side. On the back surface of the positive electrode 5, bottomed recessed fitting portions 30 are formed corresponding to the plus electrodes 15 of the _three small standard batteries B ₃ , B ₃ , B ₃ . That is, the positive electrode tool 5 is inserted into the fitting portions 30 and the plus electrodes 15 are moved to move the small standard batteries B ₃ , B ₃ and B ₃ (at predetermined positions in the case body 3) in the left-right direction. Not to hold. Further, with this configuration, even if the plus / minus is mistakenly attached and the small standard battery B ₃ is installed in reverse, the minus electrode 16 does not contact the conductor 8 and can be used correctly, and the case body 3 It also serves to reinforce the one end portion 3A.
As shown in FIG. 7, the mounting plate portion 17 forms a guide inclined surface portion 19 in the vertical direction on the side end edge portion 27 </ b> A of the through hole 27.
The guide inclined surface portion 19 is provided at the side edge portion 27A on the upper side of the through hole 27, and is chamfered so that the mounting plate portion 17 is gradually thinned downward. With this configuration, when the small standard battery B ₃ accommodated in the case body 3 is removed (by swinging in the vertical direction), the plus electrode 15 of the small standard battery B ₃ is placed on the side edge 27A of the through hole 27. Without being caught, it is smoothly detached from the fitting portions 30.

As shown in FIGS. 1, 2 and 5, the case body 3 includes a window portion for battery extrusion on the bottom wall portion 20 of the lower half 2 near the one end portion 3 </ b> A to which the positive electrode tool 5 is attached. 26 is provided.
Two windows 26 and 26 are formed corresponding to two small standard batteries B ₃ and B ₃ accommodated on the bottom wall 20 of the case body 3, and human fingers or thin sticks can be inserted. is configured as a compact standard batteries B _3, it is obtained by configuration retrieval readily extruded from below (a finger or a stick).

As shown in FIGS. 5 and 8, the negative electrode tool 6 is provided with a conductor 9 whose electric contact surface 9 </ b> A is exposed at the other end 3 </ b> B of the case body 3, a plurality of conductors 9, and a plurality of conductors 9. that the mounting plate portion 18 having a plurality of through-hole 28 to contact the negative electrode 16 of the small standard battery B ₃ the coil spring-like electrical connection terminals 25 as the insertion shape, and includes.
The negative electrode device 6 is a flat plate-type common electrode that is mounted in a (rear) hole of the case body 3, and includes three small standard batteries B ₃ , B ₃ , B ₃ housed in the case body _3. Of the negative electrodes 16 are brought into contact with the conductor 9 through the electrical connection terminals 25.
The coil spring-like electrical connection terminals 25 are attached corresponding to the negative electrodes 16 of the _three small standard batteries B ₃ , B ₃ , B ₃ (accommodated in a predetermined position in the case body 3) and have a repulsive force. pressing a small standard battery _{B 3} to the positive electrode member 5, a small standard battery _{B 3,} B 3, _{B 3} (a predetermined position in the case body 3) holds. The negative electrode tool 6 also plays a role of reinforcing the one end 3 </ b> A of the case body 3.
Furthermore, the electrical connection terminal 25 is formed so as to gradually reduce the diameter toward the tip 25A.
With this configuration, when removing the compact standard batteries B ₃ housed in the case body 3, the distal end 25A of the electric connection terminals 25, be entangled to the negative electrode 16 of the small standard battery B ₃ significantly reduced, the case body 3 the small standard battery B ₃ so that the removable smoothly from.

As shown in FIGS. 8 and 9, the negative electrode tool 6 is provided with a protrusion 23 for preventing displacement in the center portion 18 </ b> C of the mounting plate portion 18.
The protrusion 23 is formed integrally with the mounting plate 18 and is configured to contact the end surface of the small standard battery B _{3 on} the negative electrode 16 side to prevent the case body 3 from swinging in the axial direction. Yes.
In a state where the small standard battery B ₃ is stored in the case body 3 (see FIG. 4), the positive electrode 15 is inserted into the fitting portion 30 while the negative electrode 16 of the small standard battery B ₃ is pressed against the electrical connection terminal 25 to be contracted. When fitted and fitted, the protrusion 23 locks the end surface of the small standard battery B _{3 on} the negative electrode 16 side, and prevents the small standard battery B ₃ from swinging in the axial direction of the case body 3. It is composed. The small standard battery B ₃ accommodated in the case body 3 is held by the ribs A ₁ and A ₂ (the support piece 10 and the protruding portion 21) and is restricted from swinging in the axial direction. Even when a strong external force is applied in the axial direction, such as when a strong centrifugal force or impact is applied to the case body 3, the small standard battery B ₃ . ing. Projections 23, also small standard battery B ₃ in the case body 3 is in the state of being housed only one, holding a small standard battery B ₃ at a predetermined position, it is possible to reliably prevent positional deviation .
The negative electrode tool 6 is provided with two extraction assisting protrusions 24, 24 in the vicinity of the peripheral edge 18 </ b> B of the mounting plate 18.
The protrusions 24, 24 are arranged corresponding to the upper positions of the two small standard batteries B ₃ , B ₃ accommodated on the lower half 2 side of the case body 3, and are formed integrally with the mounting plate 18. Has been. The protrusions 24, 24 prevent the minus electrode 16 side of the small standard battery B _{3 from} swinging upward when removing the small standard battery B ₃ , B ₃ stored in the case body 3. the small standard battery B ₃ smoothly are configured so easily removed.

The usage method (action) of the battery adapter of the present invention described above will be described.
As shown in FIG. 3, the upper half 1 and the lower half 2 in an open state, plus a small standard battery B ₃ while pressing the negative electrode 16 of the small standard battery B ₃ to the electrical connection terminals 25 of the negative electrode member 6 The electrode 15 is fitted and fitted into the fitting part 30 of the positive electrode tool 5. The small standard battery B ₃ is elastically biased toward the positive electrode tool 5 (in front of the case body 3) by the repulsive force of the electrical connection terminal 25, and the plus electrode 15 is pressed against the conductor 8. In this way, the small standard battery B ₃ fitted between the positive electrode tool 5 and the negative electrode tool 6 is prevented from swinging by the projection 23 of the negative electrode tool 6, and the plus electrode 15 is the positive electrode tool 5. Since it is always elastically urged so as not to leave from the locked state of the through-hole 27, the positioning is ensured without moving in the case body 3.

Similarly, one to a maximum of three small standard batteries B ₃ ... Are mounted, and then the elastic tongue 13 of the lower half 2 is locked in the locking hole 14 of the upper half 1 to The half body 1 and the lower half body 2 are closed. The battery adapter of the present invention can be used only by mounting one small standard battery B ₃ , and up to three small standard batteries B ₃ ... According to the work required by the electrical product. It is possible to install.

Next, a method for removing the used small standard battery B ₃ from the case body 3 will be described. The upper half 1 and the lower half 2 are opened, and a finger or a finger is placed on the window 26 from below the lower half 2. insert the ones of the rod-shaped, push the small standard battery B ₃ upward. At this time, the protrusion 24 of the negative electrode device 6 prevents the small standard battery B ₃ from swinging on the negative electrode 16 side, and the positive electrode 15 slides on the guide inclined surface portion 19 while the through hole 27 is locked. break away.

The design of the present invention can be changed. For example, as shown in FIG. 1, along the side portions of the upper half 1 and the lower half 2, convex portions 31 and concave portions 32 for preventing misalignment are provided. It is also desirable to form. With this configuration, the strength and rigidity of the upper half 1 and the lower half 2 in the closed state can be ensured.
Further, the configuration of the ribs A ₁ and A ₂ is not limited to the above-described embodiment, and the rib wall (s) is vertically elongated in each of the upper half 1 and the lower half 2. It may obtained by setting, accommodating the lower half 2 of the 2-side small standard battery B _3, B _3, and, in a state of accommodating the one small standard battery B ₃ in upper half 1 side, the shaft Any configuration is possible as long as it is held so as not to move in the direction of the heart.
About the window part 26, it is also preferable to provide only one which is formed in a horizontally long shape in the left-right direction of the lower half 2.

As described above, the battery adapter according to the present invention is a battery adapter that allows use small compact standard batteries B ₃ of count as a large a large standard battery B ₁ substitute for count, the shape of a large standard battery B ₁ And a cylindrical case body 3 composed of an upper half 1 and a lower half 2 that can be opened and closed by swinging around a hinge portion 4 on one side, and the axial direction of the case body 3 both end portions 3A, and a positive electrode member 5 and the negative electrode member 6 in contact with the positive electrode 15 and negative electrode 16 is attached to 3B small standard battery B _3, with the case body 3, a plurality of small standard battery B ₃ so was capable housed in parallel form, the capacitance is small by using a small standard battery B ₃ a plurality of, it is possible to perform electrical work about equal to the large standard cell, moreover, a small standard attachment and removal of the battery _{B 3} Is easy and convenient.

  In addition, the upper half 1, the lower half 2, and the hinge portion 4 are made of a plastic integrated product, and the hinge portion 4 is formed in a curved thin piece, so that the case body 3 has a simple structure. Can be manufactured easily, cost can be reduced, and waste can be saved.

Further, the small standard battery B ₃ is an AA battery, and the large standard battery B ₁ is an AA battery, and the case body 3 can store up to three small standard batteries B _3. Therefore, AA batteries with high versatility and good cost performance can be used, and costs can be reduced. By unifying the batteries to be used as AA batteries, it can be purchased in bulk, and it is not necessary to buy expensive AA batteries, which is economical.

Further, in the upper half 1 lower half 2, is provided with the rib A _1, A ₂ of small standard battery B ₃ is held stationary in the case body 3, a small standard battery B 3 _... certainty Can be positioned.

In addition, the case body 3 protrudes in the axial direction on the inner surface of the bottom wall portion 20 of the lower half ₂ as the ribs A ₁ and A ₂ and protrudes to the inner peripheral intermediate position C ₂ of the lower half 2. A plurality of support pieces that erect ridges 21 and project from the left and right inner surfaces of the upper half 1 in the cross-sectional direction and form a recess 7 at the inner peripheral intermediate position C ₁ of the upper half 1. 10, the small standard battery B ₃ ... Can be reliably positioned in the case body 3 so as not to move. The ribs A ₁ and A ₂ have sufficient strength and rigidity, and the small standard battery B ₃ can be held more reliably without moving over the ridge 21 and the support piece 10.

Further, positive electrode member 5 includes a conductor 8 that electric erosion surface 8A projects from the one end portion 3A of the case body 3, the conductor 8 positive electrodes 15 of the small standard battery B ₃ as insertion shape holds the conductor 8 A mounting plate portion 17 having a plurality of through-holes 27 to be contacted, and the mounting plate portion 17 is formed with a guide inclined surface portion 19 in a vertical direction on a side edge portion 27A of the through-hole 27, so that the case body 3 can securely hold a plurality of small standard batteries B ₃ ... And can be easily attached and detached. In addition, the strength of the case body 3 can be improved.

Further, the case body 3 has a window portion 26 for battery extrusion penetrating the bottom wall portion 20 of the lower half 2 near the one end 3A to which the positive electrode tool 5 is attached. detaching the B ₃ can be performed more easily.

The negative electrode tool 6 includes a conductor 9 whose electric contact surface 9A is exposed to the other end 3B of the case body 3, and a coil spring-like electrical connection terminal 25 that holds the conductor 9 and is attached to the conductor 9 in a plurality. and a mounting plate portion 18 having a plurality of through-hole 28 to contact the negative electrode 16 of the small standard battery B ₃ as insertion shape, with the electrical connection terminals 25 are formed so as to diameter gradually toward the leading end 25A Therefore, the plurality of small standard batteries B ₃ ... Can be securely held in the case body 3 and can be easily attached and detached. In addition, the strength of the case body 3 can be improved.

Further, cathode tool 6, the central portion 18C of the mounting plate portion 18, since the projecting the displacement prevention projections 23, certainly as small standard battery B 3 _... does not move in the case body 3 Can be positioned. In particular, even when used by being mounted a small standard battery B ₃ only one, it is easy positioning and reliably performed.

Further, cathode tool 6 is in the vicinity of the peripheral edge portion 18B of the mounting plate portion 18, since the projected two take-out auxiliary projections 24, 24, attachment and detachment of small standard battery B ₃ can be performed more easily.

DESCRIPTION OF SYMBOLS 1 Upper half body 2 Lower half body 3 Case main body 3A One end part 3B Other end part 4 Hinge part 5 Positive electrode tool 6 Negative electrode tool 7 Recessed part 8 Conductor 8A Electrical contact surface 9 Conductor 9A Electrical contact surface 10 Supporting piece 15 Plus electrode 16 Negative electrode 17 Mounting plate portion 18 Mounting plate portion 18B Peripheral portion 18C Center portion 19 Inclined inclined surface portion 20 Bottom wall portion 21 Protruding portion 22 Upper edge portion 23 Protrusion for preventing misalignment 24 Protrusion for assisting extraction 25 Electrical connection terminal 25A Tip 26 Window portion 27 Through-hole 27A Side edge portion 28 Through-hole A ₁ , A ₂ rib B ₁ Large standard battery B ₃ Small standard battery C ₁ Inner circumferential intermediate position C ₂ Inner circumferential intermediate position

Claims (10)

A battery adapter that allows a small standard battery (B ₃ ) with a small count to be used as a substitute for a large standard battery (B ₁ ) with a large count,
The upper half body (1) and the lower half body (2) are formed substantially the same as the shape of the large standard battery (B ₁ ) and can swing around the hinge portion (4) on one side to open and close. And a positive electrode (15) and a negative electrode (15) of the small standard battery (B ₃ ) attached to both ends (3A) (3B) in the axial direction of the case main body (3). 16) a positive electrode device (5) and a negative electrode device (6) which are in contact with each other, and the case body (3) can accommodate a plurality of the above-mentioned small standard batteries (B ₃ ) in parallel. A battery adapter characterized by that.   The upper half (1), the lower half (2), and the hinge part (4) are made of a plastic integral molded product, and the hinge part (4) is formed in a bent thin piece. Battery adapter. The small standard battery (B ₃ ) is an AA battery, and the large standard battery (B ₁ ) is an AA battery,
The case body (3), said small standard battery (B ₃₎ can store up to three at the maximum and claims 1 or 2 battery adapter according. Ribs (A ₁ ) (A ₂ ) for holding the small standard battery (B ₃ ) so as not to move in the case body (3) on the upper half (1) and the lower half ( ₂ ). The battery adapter according to claim 1, 2 or 3. The case body (3) protrudes in the axial direction on the inner surface of the bottom wall (20) of the lower half (2) as the ribs (A ₁ ) (A ₂ ), and the lower half A protruding portion (21) is erected at the inner peripheral intermediate position (C ₂ ) of ( ₂ ), and protrudes in the cross-sectional direction from each of the left and right inner surfaces of the upper half (1) and The battery adapter according to claim 4, further comprising a plurality of support pieces (10) that form recesses (7) in the inner peripheral intermediate position (C ₁ ) of the half body (1). The positive electrode device (5) includes a conductor (8) whose electric contact surface (8A) protrudes from one end (3A) of the case body (3), the conductor (8), and the small size standard. A mounting plate portion (17) having a plurality of through holes (27) for bringing the positive electrode (15) of the battery (B ₃ ) into contact with the conductor (8),
The said mounting plate part (17) forms the guidance inclined surface part (19) in the perpendicular direction at the side edge part (27A) of the said through-hole (27), The claim 1, 2, 3, 4 or 5 Battery adapter.   The case main body (3) has a window portion (20) for battery extrusion on the bottom wall (20) of the lower half (2) near the one end (3A) to which the positive electrode device (5) is attached. 26) The battery adapter according to claim 1, 2, 3, 4, 5 or 6. The negative electrode tool (6) has a conductor (9) whose electric contact surface (9A) is exposed at the other end (3B) of the case body (3) and holds the conductor (9). A mounting plate portion having a plurality of through-holes (28) that are brought into contact with the negative electrode (16) of the small standard battery (B ₃ ) by inserting a plurality of coil spring-like electrical connection terminals (25) attached to (9). (18)
The battery adapter according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the electrical connection terminal (25) is formed so as to be gradually reduced in diameter toward the tip (25A).   The battery adapter according to claim 8, wherein the negative electrode tool (6) is provided with a protrusion (23) for preventing misalignment at a central portion (18C) of the mounting plate portion (18).   The said negative electrode tool (6) has protruded the protrusion (24) (24) for two extractions in the vicinity of the peripheral part (18B) of the said mounting plate part (18). Battery adapter.

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