JP2003297306A - Battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery provided with an inexpensive case body capable of reliably sealing secondary batteries. <P>SOLUTION: In this battery 10 provided with the case body 12 to store the secondary batteries in it, the case body is formed by a molded molding part 16 and a blow molding part 14, and the molded molding part and the blow molding part are integrated. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery having a case body for accommodating a battery therein.

[0002]

2. Description of the Related Art Generally, a battery having various sealed cases has been developed as a power source for driving an electric fishing reel. For example, in Japanese Utility Model Laid-Open No. 7-7443, an upper case and a lower case, which are divided into upper and lower parts, are integrally molded by molding, respectively, and the upper case and the lower case are integrated by a connecting means such as a screw member. , A so-called molded battery case is described. Since both the upper case and the lower case are formed with high precision by the mold, the inside can be reliably sealed.

[0003]

However, such a molded battery case has a relatively simple structure as well as a handle portion for carrying, a remaining amount meter, and the like, which are complicated in shape. The cost of the mold required for this is increased because the entire mold is manufactured including the easily manufactured part and the part that does not require high dimensional accuracy. For this reason, it is desired to reduce the cost of the battery case in order to form a battery that should be an inexpensive drive power source.

The present invention has been made under the circumstances described above, and an object thereof is to provide a battery provided with an inexpensive case body capable of reliably sealing a battery.

[0005]

According to another aspect of the present invention, there is provided a battery having a case body for accommodating a battery, wherein the case body is formed of a mold forming portion and a blow molding portion. It is characterized in that the mold forming part and the blow molding part are integrated.

[0006]

1 to 3 show a battery 10 according to a preferred embodiment of the present invention. The battery 10 of the present embodiment is a lead storage battery that can be charged in the case body 12,
A secondary battery such as an alkaline storage battery or a lithium ion battery is housed to generate a rated voltage of, for example, 12 V, and it is particularly suitable as a driving power source for an electric fishing reel (not shown).

The case body 12 of this embodiment includes a lower case 14 which is a blow-molded portion made of an insulating material such as polyethylene terephthalate or polycarbonate which has excellent waterproofness and corrosion resistance and is inexpensive, and PP (polypropylene) or the like. The upper case 16 is a molded part made of a synthetic resin material having excellent corrosion resistance and insulation. The lower case 14 has a relatively deep rectangular container shape that opens upward, and most of the secondary battery is housed in the lower case 14. The upper case 16 has a relatively shallow rectangular lid shape that opens downward, and a handle 18 that is convenient to carry is integrally formed on the top of the upper case 16. Further, in the upper case 16, two electric terminals 20 for supplying driving power to the fishing reel from the internal secondary battery or charging power are provided in the recess 22 of the upper case 16. It is protected by this recess. These electric terminals 20 can be formed in an appropriate shape as long as they can be attached to the upper case 16 in a sealed state. Reference numeral 24 indicates a battery residual quantity meter, and reference numeral 26 is an operation switch for displaying the battery residual quantity meter 24. Both are attached to the upper case 16 in a sealed state from the outside.

These lower case 14 and upper case 16
Has substantially the same rectangular cross-sectional shape along the depth direction, and peripheral flanges 14a and 16a are formed over the entire circumference on the outer peripheral portions of the openings along the respective opposite ends. There is. These peripheral flanges 14a, 16a
Are formed to have almost the same width as each other, and a seal member 28 can be inserted between them to seal the inside when tightened by a connecting means 30 described later. Therefore, the peripheral flanges 14a and 16a are formed to have a sufficient thickness or strength to withstand the tightening force of the tightening tool 30. The peripheral flanges 14a and 16a need not be formed to have substantially the same thickness as shown in the figure as long as they can withstand the tightening force and the weight of the internal secondary battery. Accordingly, it can be formed to have a required thickness and width dimension.

These lower case 14 and upper case 16
The connecting means 30 for integrally connecting and with each other via the peripheral flanges 14a and 16a have the respective peripheral flanges
A pair of clamp members 34a, 34b are formed along the inner peripheral surface of a groove 32 for accommodating a and 16a together with the sealing material 28. The clamp members 34a, 34b of the present embodiment have U-shapes with each other, and the groove portions 32 are formed along the peripheral flanges 14a, 16a in a state where the opening sides of the case body 12 face each other. By moving them in the directions in which they approach each other while sliding, the peripheral case flanges 14a and 16a and the sealing material 28 can be tightened, and the lower case 14 and the upper case 16 can be integrated. Then, these clamp members 34
The lower case 14 and the upper case 16 are integrally connected by the connecting means 30 by connecting the a and 34b with a fastener such as a pair of bolts 36.

As a result, the inside of the case body 12 is completely sealed. When moving, the handle 18 can be freely carried to a required position. Further, when the case body 12 is opened, the bolt 36 is loosened and the clamp members 34a, 3
4b is removed from the peripheral flanges 14a and 16a. In addition,
The clamp members 34a and 34b do not necessarily have to have the same size as long as the peripheral flanges 14a and 16a can be fastened via the sealing material 28, and the clamp members 34a and 34b can have an asymmetric structure. is there. Further, the peripheral flanges 14a and 16a may be tightened from the vertical direction. In any case, the lower case 14, which is a blow molding part in particular, is
In order to prevent the deformation of “a”, a reinforcing portion may be provided to prevent the movement of the inside of the secondary battery. Reference numeral 38 indicates a reinforcing rib for preventing the lower case 14 from bulging or denting.

In the case body 12 thus formed, the lower case 14 having a relatively simple structure is used as an inexpensive blow molding part, and only the upper case 16 requiring high dimensional accuracy is formed with the molding part. Even at a low cost, the inside can be completely sealed, and thus the cost of the battery can be reduced. In addition, the combination of the upper case 16 having a relatively rigid structure and the lower case 14 having a relatively elastic structure securely and firmly holds the internal battery so that the battery can be moved inside even during transportation. Can be prevented.

4 and 5 show a battery according to another embodiment. Since this embodiment is also basically the same as the above-mentioned embodiment, the same reference numerals are given to the same portions, and the detailed description thereof will be omitted. In this embodiment, the peripheral flange in the above embodiment is not formed,
The upper case 16 extends along the peripheral portion of the opening to form the lower case 1.
It has a skirt portion 40 extending to the 4 side. This skirt 4
The inner peripheral surface of 0 is formed corresponding to the outer peripheral portion near the opening end of the lower case 14.

The case body 12 of this embodiment accommodates the open end, that is, the upper end portion of the lower case 14 in the skirt portion 40 of the upper case 16, and is close to the inner surface of the skirt portion 40 and the upper end portion of the lower case 14. The joint surface 42 with the outer surface is welded ultrasonically over the entire circumference. As a result, the inside of the case body 12 is completely sealed.

Instead of such ultrasonic welding, it is possible to integrate the lower case 14 and the upper case 16 by insert molding or an adhesive. It is also possible to provide a groove for accommodating the other edge portion on one of the lower case 14 and the upper case 16 and to join the groove and the edge portion in combination.

[0015]

As is apparent from the above, according to the battery of the present invention, the case body is formed by the molded portion and the blow molded portion, and these molded portion and blow molded portion are integrated. It is possible to provide a low-cost battery including a case body that reliably seals the battery inside with a simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view of a battery according to a preferred embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a part of the battery shown in FIG.

FIG. 3 is an exploded perspective view of a case body of the battery shown in FIG.

FIG. 4 is a perspective view of a battery according to another embodiment.

5 is an enlarged cross-sectional view of a portion of the battery of FIG.

[Explanation of symbols]

10 ... Battery, 12 ... Case body, 14 ... Lower case,
16 ... Upper case.

Claims (5)

[Claims] 1. A battery having a case body for accommodating a battery inside, wherein the case body is formed by a mold forming part and a blow forming part, and these mold forming part and blow forming part are integrated. Battery characterized by. 2. The battery according to claim 1, wherein the molded portion has a terminal connected to an electrode of the battery, and the blow molded portion houses a main body portion of the battery. 3. The battery according to claim 1, wherein the battery is a secondary battery. 4. The mold forming part and the blow molding part have peripheral flanges formed so as to face each other, and a connecting means for integrating the mold forming part and the blow molding part is provided with these. The battery according to any one of claims 1 to 3, further comprising a pair of clamp members formed with grooves for accommodating the peripheral flanges in an overlapped state along the inner peripheral portion. 5. The battery according to claim 1, wherein the mold forming portion and the blow molding portion are ultrasonically welded along a peripheral portion.