JP2001052667A - Lid coupling structure of battery pack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To offer a lid coupling structure capable of generating fixation by a single action. SOLUTION: A lid coupling structure of a battery pack is composed of a first and a second battery pack body in box shape accommodating at least batteries and either being structured capable of being mounted on the body of electronic apparatus, a projection 4 resilient to the left and right formed at the edge of the second battery pack body to be coupled with the first battery pack body, and a stepped recess 5 to be coupled with the projection 4, formed at the edge of the first battery pack body, and admitting resilient insertion and fixation of the projection 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a connection structure of a lid of a battery pack which is attached to, for example, an electronic device main body and supplies power to the electronic device main body.

[0002]

2. Description of the Related Art In recent years, portable electronic devices such as portable telephones have been desired by users as a whole to be thin, lightweight, and compact, and these tendencies have been further strengthened. Such electronic devices employ a battery pack having a built-in rechargeable battery. This battery pack is made of a material such as plastic and is composed of an upper lid and a lower lid. Therefore, after the battery and / or the protection circuit are housed inside, the openings of the upper lid and the lower lid are adhered with an adhesive or fixed by ultrasonic welding.

Conventionally, the edge of the opening between the upper lid and the lower lid is flat, and an adhesive is applied to the flat part and combined with each other, so that the adhesive overflows onto the surface of the battery pack and impairs the appearance of the surface. I have. In addition, the bonding is not enough because the bonding is abutting with the flat surface. Therefore, a method that considers from the structural aspect of adopting an intaglio fitting structure on the edge portion, applying an adhesive to it, and bonding is used. However, since the upper and lower lids are simply bonded from the left and right at the edges, the battery pack itself is vulnerable to shocks from the left and right, and often breaks itself, which is not sufficient for aesthetics. Was.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a one-touch connection between the open edge portions of the upper lid and the lower lid without using any means such as an adhesive or ultrasonic welding and without using another component. The present invention provides a battery pack lid coupling structure which is firmly coupled with the battery pack.

[0005]

The first means for solving the problems of the present invention is a first box-shaped structure in which at least a battery is housed and which is configured to be attachable to an electronic device body.
A second battery pack main body; a left and right elastic projection formed on an edge of a second battery pack main body connected to the first battery pack main body; And a stepped recess formed at the edge of the battery pack main body and the convex portion is elastically inserted and fixed, and the second means is at least a battery housed inside and attached to the electronic device main body. Box-shaped first which has any of the possible structures
And a second battery pack main body, a left and right elastic projection formed on an edge of the first battery pack main body connected to the second battery pack main body, and the second battery pack main body connected to this projection. And a stepped recess formed at the edge of the battery pack main body and the projection is elastically inserted and fixed.

[0006]

When the convex portion formed on the edge of the upper lid is inserted into the stepped concave portion formed on the edge of the lower lid from the mouth side of the concave portion, the convex portion has an elastic structure, so that the convex portion is stepped while receiving pressure. The tip of the convex part is opened at the stepped part, hooked into the concave part, and can be fixed so as not to easily come off. Therefore, there is no need for a means such as an adhesive or ultrasonic welding. Therefore, the number of assembly steps can be reduced and the cost can be reduced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings, FIGS. 1 is an assembled perspective view in which a plastic battery pack main body 1 is combined with an upper lid 2 and a lower lid 3. A convex portion 4 is formed on the opening edge of the battery pack main body 1 that opens to the lower side of the upper lid 2 as shown in FIGS. 2 and 3 (FIGS. 2 and 3 show the main part X in FIG. 1).
Enlarged sectional view of FIG. On the other hand, a stepped recess 5 is formed on the edge of the lower lid 3 on the opening side. That is, the tip of the convex portion 4 has an arrowhead shape 10.
And a cut 6 is formed in the center.

Accordingly, the legs 7 and 8 separated by the cut 6 have elasticity in the opening and closing direction of the cut 6.
The central portion of the convex portion 4 is adjusted to a size that can be inserted along the inside of the stepped concave portion 5 into which the convex portion 4 is inserted. The arrowhead shape 10 is pushed from the left and right, and the cut 6 becomes narrower and is inserted into the stepped recess 5. For this reason, the inside of the stepped concave portion 5 is made wider than the central portion of the convex portion 4 and is formed as a stepped inner portion 5 having a wider portion 9 formed below.

FIG. 2 shows a projection 4 in the form of a stepped recess 5 shown in FIG.
When inserted, the left and right protrusions of the arrowhead 10 are caught by the stepped portion of the wide portion 9 of the stepped concave portion 5 so that they do not come out. That is, since the convex portion 4 is inserted into the stepped concave portion 5 and is not caught by the wide portion 9 at the deepest portion and cannot be removed, and it is firmly connected, it cannot be easily removed by some external force.

Next, a series of operations when the convex portion 4 is inserted into the stepped concave portion 5 will be described.
Is forcibly inserted into the stepped concave portion 5 (that is, when the upper lid 2 is closed to the lower lid), the arrowhead-shaped portion 10 is pushed from the left and right, and the central cut is elastically narrow. When pushed further, the arrowhead 10 enters the stepped concave portion 5 and reaches the wide portion 9.

Then, since this portion is wide, the arrowhead shape 10 spreads right and left, and the hooking portion 11 becomes the stepped concave portion 5.
The upper lid 2 can be firmly fixed to the lower lid 3 with one touch without adhesive or ultrasonic welding. In this case, it goes without saying that the length of each portion of the convex portion 4 and the length of each portion of the stepped concave portion 5 are appropriately adjusted and set so that no gap is formed at a position where the upper lid 2 is fixed to the lower lid 3. In the above embodiment, the protrusion 4 is provided on the upper lid 2 side.
And an example in which the stepped recess 5 is formed on the lower lid 3 side has been described.

[0012]

As described above, according to the present invention, a convex portion is formed on one side of the lid, and a stepped concave portion is formed on the other side of the lid. It is possible to provide a battery pack cover fixing structure that can fix the cover and thus can reduce the cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part X of FIG. 1;

FIG. 3 is an enlarged sectional view of a main part X of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery pack main body 2 Upper lid 3 Lower lid 4 Convex part 5 Stepped concave part 6 Notch 7, 8 Leg part 9 Wide part 1 Arrowhead shape 11 Hook part A Arrow

Claims (2)

[Claims] 1. A box-shaped first and second battery pack main body having at least a battery housed therein and configured to be attachable to an electronic device main body, and connected to the first battery pack main body. A left and right elastic projection formed on the edge of the second battery pack main body, and the projection formed on the edge of the first battery pack main body joined to the projection and elastically inserted. A lid coupling structure for a battery pack, comprising: a stepped concave portion to be fixed. 2. A first and second box-shaped battery pack bodies each having at least a battery housed therein and configured to be attachable to an electronic apparatus body, and connected to the second battery pack body. Left and right elastic portions formed on the edge of the first battery pack main body, and the convex portion formed on the edge of the second battery pack main body connected to the convex portions and being elastically inserted. A lid coupling structure for a battery pack, comprising: a stepped concave portion to be fixed.