JP2003086161A - Battery case made of paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery case made of paper capable of stably holding cylindrical dry batteries in parallel by preventing rusting of the batteries and microleakage. SOLUTION: The battery case made of paper for holding a plurality of cylindrical dry batteries 12 in parallel is so formed that the portions 8 and 8 of the battery case to which the electrodes of the dry batteries are opposed are bent or curved into a shape that is kept out of contact with the electrodes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper battery case for accommodating a plurality of cylindrical dry batteries in parallel.

[0002]

2. Description of the Related Art Recently, a paper-made packaging material has attracted attention as an environment-friendly packaging material instead of plastic, and a paper-made battery case for accommodating a plurality of cylindrical dry batteries in parallel is desired.

A conventional battery case made of paper of this type has a front part and a back part which cover the body parts of all the batteries arranged in parallel.
Both sides that cover the side of the paralleled batteries and both electrode facing parts that cover the electrodes of the paralleled batteries are formed into a flat rectangular box shape, and these parts are minimized to reduce material cost. It is dimensioned and contacts the battery.

[0004]

However, when a dry battery is stored in such a paper case and stored for a long period of time in a high humidity environment, the case paper absorbs moisture and rusts due to contact with the electrodes. However, there is a problem in that the product of the battery is deteriorated due to the occurrence of a slight electric leakage of the battery when the paper of the case becomes close to the conductor. In order to solve such a problem, a surface treatment can be applied to the inside of the paper case for the purpose of insulation or moisture prevention, but this leads to cost increase and the case itself is discarded separately from paper dust. Problems such as having to do occur. On the other hand, if the size of the case is increased so that the electrode of the battery does not come into contact with the inner surface of the case, not only the cost of the material increases, but also the battery moves inside and the battery itself is damaged or deformed.

Therefore, the main object of the present invention is to provide a paper battery case which can prevent rust and micro-leakage from occurring in the battery and can stably hold the cylindrical dry batteries housed in parallel inside. To provide.

[0006]

In order to achieve the above object, in the present invention, in a paper battery case for accommodating a plurality of cylindrical dry batteries in parallel, the battery case of which the electrodes of the dry batteries are opposed to each other The part is bent or curved so as not to contact the electrode.

[0007] Preferably, the battery case includes a front surface portion and a back surface portion that cover the body portions of all the batteries arranged in parallel, both side portions that cover the side portions of the batteries arranged in parallel, and the electrode portions of the batteries arranged in parallel. It is formed of both electrode facing portions which cover and the distance between the front surface portion and the back surface portion is substantially equal to the diameter of the battery unit, and the both electrode facing surface portions are formed with respect to the front surface portion or the back surface portion. It is formed as an inclined or curved surface portion.

With such a simple structure, the battery is stably held in the case, and the electrodes of each battery do not come into contact with the inner surface of the case. Therefore, there is no possibility of rusting of the electrodes or electric leakage. , The dry battery can be stored for a long period of time without deterioration of quality.

Further preferably, in the above structure, a plurality of dry batteries are laid side by side in the case, a hanging portion is formed above the back surface portion, and lower ends of the both electrode facing surface portions are formed. The part is formed so as to project downward from one of the both side parts forming the bottom surface of the case.

In this case, when the case suspended by the suspension part falls for some reason, the lower ends of the electrode facing surface portions first collide with the floor surface or the ground to absorb the impact. It is possible to prevent damage to the battery due to dropping.

Preferably, a plurality of dry batteries are arranged vertically in the case in a horizontal direction, a hanging portion is formed above the back surface portion, and both end portions of the both electrode facing surface portions are the same. It is formed so as to project outward from the both side portions that form the left and right side portions of the case.

In this case, when the case suspended by the suspension part falls for some reason, both electrode facing surfaces or side ends thereof collide with the floor surface or the ground to absorb the impact. , It is possible to prevent the battery from being damaged by dropping.

[0013]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show an example of a battery case in which several horizontally placed dry batteries according to the first embodiment of the present invention are vertically stacked and housed, and FIG. 1 is a development view of the battery case. Shows a state in which the battery is stored and assembled, and FIG. 3 shows a state in which the battery case of FIG. 1 is assembled and turned upside down.

In FIGS. 1 to 3, reference numeral 1 denotes a front portion of a battery case, 2 denotes a rear portion thereof, the front portion 1 is formed in a rectangular shape, and a window hole 3 having arcuate ends is vertically formed in the center thereof. Has been drilled for a long time. The length of the short side (left and right) of the front part 1 is formed to be almost the same as the length of the cylindrical portion of the dry battery, and the length of the long side (upper and lower) is the dry battery (7 It is formed so as to have almost the same stacking height as that of individual dry batteries).

At both upper and lower ends of the front face portion 1, a top face portion 4 and a bottom face portion 5 having a width substantially equal to the diameter of the battery are formed. On the upper end of the upper surface portion 4, a suspension piece 6 is extended upward. The back surface 2 is integrally connected to the lower end of the bottom surface portion 5, the left and right widths of the back surface portion are the same as those of the front surface portion, and the vertical length is the same as the vertical length of the front surface portion 4. It is equal to the sum of the upper and lower lengths of 6. The left and right ends of the top surface portion 4 and the bottom surface portion 5 are formed as outwardly curved protruding portions 4a, 5a. Suspension holes 7 are formed in the upper portion of the suspension piece 6 and the lower portion of the back surface portion 2, respectively.

Left and right electrode facing pieces 8 facing the electrodes of the dry battery are integrally connected to the left and right sides of the front portion 1.
The vertical length of each electrode facing piece 8 is formed longer than that of the front surface portion 4, and each corner portion of the rectangular front surface portion 1 adjacent to the inner ends of the upper end portion 8a and the lower end portion 8b of the electrode facing piece 8. A notch line 9 is formed between and.

A mountain-shaped fold curve 10 is formed in the vertical direction at the central portion of each electrode facing piece 8 and a margin portion 11 having a short side in the vertical direction is formed on the outer side thereof.

In FIG. 2, seven cylindrical dry batteries 12 are stacked in the horizontal direction on the front portion 1 shown in the development view of FIG. 1, and the top surface portion 4 and the bottom surface portion 5 are folded at right angles to the front surface portion. It is shown that the left and right electrode facing pieces 8 are partially bent and bent upward.
To complete the battery case of the present invention, the electrode facing piece 8 is bent along the chevron fold curve 10 from the state shown in FIG. 2, and the inner surfaces of the upper and lower end portions 8a and 8b of the electrode facing piece 8 are set to the top surface portion 4 and the bottom surface portion. 5 is brought into contact with the protruding portions 4a, 5a of the battery 5 and bent, and by this bending, an adhesive (not shown) is applied to the outer surface of the glue margin piece 11 located on the upper surface of the dry battery 12, and the suspension piece 6 An adhesive is applied to the back surface, the back surface 2 is bent over the dry battery 12, and the inner surface thereof is bonded to the glue allowance portion 11 and the suspension piece 6 via the applied adhesive. At this time, the dimensions are set so that the suspension holes 7 of the suspension piece 6 and the suspension holes 7 of the back surface portion 2 are exactly aligned.

In FIG. 3, the battery case formed as described above is inverted so that the front surface portion is exposed. The lower end portions 8b, 8b of the electrode facing piece 8 slightly extend downward beyond the surface of the bottom surface portion 5. It is shown to be protruding.

FIG. 4A is a cross-sectional view of the battery case according to the first embodiment. As is clear from this figure, the body of the dry battery 12 has a front portion 1 and a rear portion 2 having the same width as the body portion.
Since both ends of the front portion 1 and the rear portion are bent inward, the dry battery arranged inside is kept immobile. The electrode facing piece 8 bent in a chevron shape has a positive electrode terminal 12a and a negative electrode terminal 12b.
Since these are covered at a position away from, both terminals 12a and 12b of the dry battery cannot contact the inner surface of the electrode facing piece 8.

FIGS. 4 (b) to 4 (e) show modifications of the electrode facing piece shown in FIG. 4 (a) which is bent and formed in a mountain shape according to the first embodiment of the present invention. In the modification of FIG. 4B, the electrode facing piece 8c is curved in an arc shape, and the center portion of the inner surface of the arc and the positive and negative electrodes of the dry cell 12 are separated in a non-contact state. In the modified example of FIG. 4C, the electrode facing piece 8d is formed in a convex shape toward the outside, and the inner surface of this convex shape and the dry battery 1
The two positive and negative electrodes are separated in a non-contact state. Figure 4
In the modified example of (d), the cross section of the battery case is trapezoidal and covers the dry battery 12. To form this shape,
For example, the back portion 2a may be formed to have a wider width than that in the first embodiment, and the electrode facing pieces 8e may be obliquely bent and adhered to both side portions of the wider back portion. In this modification, the diagonally formed electrode facing piece 8e and both electrodes of the dry battery are separated in a non-contact state. Figure 4
In the modified example of (e), the cross-sectional shape of the battery case is a parallelogram. To form this shape, the front part 1a and the back part 2b are formed to have the same width and one of the front parts is formed. Only the side edge portion 1a 'is obliquely bent and adhered to one side portion of the flat back surface portion 2b, and the other side edge portion 2b' of the back surface portion 2b.
May be obliquely bent and bonded to the other side portion of the front surface portion 1a which is formed flat. In this case, the side edges 1a ′ and 2b ′ that are obliquely bent serve as electrode facing pieces, and are separated from both electrodes of the dry cell in a non-contact state.

FIG. 5 shows the shape of the bottom portion of the battery case according to the first embodiment of the present invention. In this embodiment, the lower end portions of the electrode facing pieces 8 on both sides of the bottom surface portion 5 of the case are the bottom surface portion 5. The shape is shown extending downwards beyond. The shapes of the lower end portions of FIGS.
It corresponds to the cross-sectional shapes of (a) to (e).

FIG. 6 shows a state in which the battery case according to the first embodiment is dropped for some reason. That is, this battery case is displayed in a state in which the suspension hole 7 is hooked on a hook or the like of the display stand to be suspended.
When the battery case is taken out of the display stand, the hand may slip or the hand may hit something and drop the battery case. In this case, in the battery case according to the first embodiment of the present invention, the electrode facing pieces 8 are provided on both sides of the bottom surface portion 5 and below the bottom surface portion 5.
Since the lower end portions 8b and 8b of the base plate extend, the lower end portion first collides with the floor surface or the ground. At the time of this collision, the lower end portion 8b is deformed and absorbs the shock, so that the internal battery 12 can be prevented from being damaged. In addition, FIG.
As shown in (b), when the lower end portions of both the left and right electrode facing pieces 8 almost simultaneously collide with the ground or the like, the bottom surface portion 5 is deformed and moved downward by the inertial force of the internal battery 12 to absorb the impact. To do.

In the example of FIG. 6, the battery case is shown in FIGS.
4B is a modification of the first embodiment, which is an example of the case of the first embodiment shown in FIG. 4A and FIG. 5A. It is needless to say that the same shock absorbing function can be achieved even when formed as shown in FIGS. 5 (b) to 5 (e).

FIGS. 7 to 9 show a second embodiment of the present invention, and in this embodiment, a battery case for accommodating the dry batteries 12 in a standing state in a lateral direction is shown. In this embodiment, one electrode facing piece 8 is formed between the front surface portion 1 and the back surface portion 2, and the other electrode facing piece 8 is formed between the front surface portion 1 and the suspension piece 6. Further, side walls 15, 15 having glue margins 14, 14 at the ends are formed on both sides of the batteries arranged in the lateral direction. The lateral width of both electrode facing pieces 8 and 8 is formed to be slightly larger than the distance between both side wall portions 15 and 15 bent at a right angle to the front portion 1 as shown in FIG.

To assemble the battery case from the state shown in FIG. 7, after applying an adhesive to the glue margin portions 14, 14 of the side wall portions 15, 15, both electrode facing pieces 8, 8 are bent in a chevron shape to form a back portion. While stacking 2 on the margin portions 14, 14, the upper suspension holes 7 on the back surface and the suspension holes 7 of the suspension pieces 6 are superposed and bonded together. The state of FIG. 8 is obtained by reversing the battery case assembled in this manner so that the front part 1 appears upward. Other points are substantially the same as the case of the first embodiment.

FIG. 9A shows a state in which the battery case formed as described above is suspended and displayed on a display stand or the like. As is apparent from FIG. 9B, both electrodes of the dry battery 12 are separated from the inner surface of the electrode facing piece 8 bent in a mountain shape and housed in a non-contact state.

In the second embodiment as well, the shape of the electrode facing piece 8 is not limited to the chevron shape, but may be appropriately changed to the shapes shown in FIGS. 4 (b) to 4 (e).

Further, in the second embodiment, when the battery case suspended and held in the state shown in FIG. 9 falls for some reason, the electrode facing piece 8 first collides with the ground or the like. Therefore, the deformation of this portion can absorb the shock, prevent the shock from being transmitted to the internal battery, and protect the damage to the battery.

[0030]

As described above, according to the present invention, in a paper battery case for accommodating a plurality of cylindrical dry batteries in parallel, the portions of the battery case where the electrodes of the dry batteries face each other are not in contact with the electrodes. Since it is bent or curved to form,
Even if the paper that makes up the battery case absorbs moisture such as moisture,
Since the electrode portion of the dry battery does not come into contact with the paper, it is possible to prevent the occurrence of rust and minute leakage of the battery in advance, and it is possible to stably hold the cylindrical dry batteries housed in parallel inside. Further, when the battery case is dropped, the bent or curved portion comes into contact with the ground or the like to absorb the shock and effectively protect the internal battery from damage.

Further, when the lower ends of the facing surfaces of both electrodes are formed so as to project downward from the bottom surface of the case, when the battery case is dropped, the projecting portion first contacts the ground or the like to absorb the shock. Therefore, it is possible to protect the internal battery from damage when dropped.

[Brief description of drawings]

FIG. 1 is a development view of a battery case according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the present invention is in the process of assembling in which the dry batteries are horizontally placed in a stack and stored in the battery case of the first embodiment.

FIG. 3 is a perspective view showing that the battery case is completely assembled from the state of FIG. 2 and is inverted.

4A to 4E are cross-sectional views showing a stored state of the battery according to the first embodiment of the present invention, and FIGS. 4B to 4E show different modifications.

5A to 5E are partial perspective views showing the shape of the bottom surface of the battery case corresponding to FIGS. 4A to 4E.

6A and 6B are front views showing a state when the battery case of the first embodiment is dropped.

FIG. 7 is a perspective view showing a state during assembly of the battery case according to the second embodiment of the present invention.

FIG. 8 is a perspective view showing that the battery case is completely assembled from the state of FIG. 7 and is inverted.

9A is a perspective view of a battery case according to a second embodiment of the present invention in a suspended state, and FIG. 9B is a longitudinal sectional view thereof.

10A and 10B are respectively a front view and a side view showing a state in which the battery case of the second embodiment is dropped.

[Explanation of symbols]

1 front part 2 back 3 window holes 4 Upper surface 5 Bottom part 6 suspension piece 8 electrode facing pieces 12 dry batteries

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shogo Aizawa             F-de, 5-36-1 Shimbashi, Minato-ku, Tokyo             K.K Co., Ltd. (72) Inventor Toshiyuki Naito             4208 Iwano-cho, Kasugai-shi, Aichi             Within the corporation (72) Inventor Hideo Kako             4208 Iwano-cho, Kasugai-shi, Aichi             Within the corporation F-term (reference) 5H040 AA31 AT01 GG12 GG13

Claims (9)

[Claims] 1. In a paper battery case for accommodating a plurality of cylindrical dry batteries in parallel, the portions of the battery case where the electrodes of the dry batteries face each other are bent or curved so as to be in non-contact with the electrodes. A paper battery case characterized in that 2. The battery case covers a front surface and a back surface that cover the body of all the batteries arranged in parallel, both sides that cover the sides of the batteries arranged in parallel, and the electrode parts of the batteries arranged in parallel. It is composed of both electrode facing portions, and the distance between the front surface portion and the back surface portion is formed to be substantially equal to the diameter of the battery unit, and the both electrode facing surface portions are inclined with respect to the front surface portion or the back surface portion. Alternatively, the paper battery case according to claim 1, wherein the paper battery case is formed as a curved surface portion. 3. The paper battery case according to claim 2, wherein said both electrode facing surface portions are each bent and formed in a mountain shape. 4. The paper battery case according to claim 2, wherein the both electrode facing surfaces are each curved and formed in an arc shape. 5. The paper battery case according to claim 2, wherein the front surface portion and the back surface portion and the both electrode facing surface portions are formed into a flat trapezoidal cross section. 6. The paper battery case according to claim 2, wherein the front surface portion and the back surface portion and the both electrode facing surface portions are formed into a parallelogram having a flat cross section. 7. The battery case covers a front surface portion and a rear surface portion that cover the body portions of all the batteries arranged in parallel, both side portions that cover the side portions of the batteries arranged in parallel, and the electrode parts of the batteries arranged in parallel. It is composed of both electrode facing portions, and the distance between the front surface portion and the back surface portion is formed to be substantially equal to or slightly larger than the diameter of the battery unit, and the both electrode facing surface portions are formed as convex surface portions. The paper battery case according to claim 1, wherein: 8. A plurality of dry batteries are arranged side by side in the case, a hanging part is formed above the back surface part, and lower ends of the both electrode facing surface parts form a bottom surface of the case. The paper battery case according to any one of claims 2 to 7, wherein the paper battery case is formed so as to project downward from one of the both side portions. 9. A plurality of dry batteries are arranged vertically in the case in a lateral direction, a hanging portion is formed on an upper portion of the back surface portion, and both end portions of both electrode facing surface portions are formed in the case. The paper battery case according to any one of claims 2 to 7, wherein the paper battery case is formed so as to project outward from the both side portions forming the left and right side portions.