JP2000243363A - Reinforcing structure of battery pack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing structure of a battery pack free from danger of a crack even when the battery pack mounted on an electronic equipment body drops and capable of creating no crack at a drop test by widening a part of a side wall part of a battery pack body in comparison with other parts wherein a large part of the side wall part of the batter pack body on a mounting side to the electronic equipment body is plane and an engaging part is protruded. SOLUTION: This reinforcing structure comprises a battery pack body 1 of a box shape capable of storing at least, a battery B inside and mounting to an electronic equipment body, and having a large plane part on a mounting side to the electronic equipment body, an engaging part 6 having a structure for engaging with the electronic equipment body on an electronic equipment body side of the battery pack body 1 and formed on one of side walls of one pair facing with each other of the battery pack body 1, and a wide side wall part as a part A of a side wall part of the other pair of the battery pack body 1 wider than other parts and most burdened when the battery pack drops with engaging part 6 down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure for 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 subjected to various condition tests at the design stage, and a drop test is an important requirement. The user is easy to drop because of the miniaturization, and the case is easily broken by dropping because the case is made of thin plastic.

[0003] In particular, in the case of a flat battery pack, if the battery pack is dropped parallel to a plane, the front or back surface of the battery pack flatly falls on a flat dropping place, and the entire battery pack is relatively uniformly loaded. , A very simple reinforcement measure is sufficient. For example, a structure in which reinforcement columns are juxtaposed at regular intervals inside the battery pack is adopted. However, due to the mechanism of attaching to the electronic device body or the battery charger for charging the battery in the battery pack, a structure in which one side in the width direction of the battery pack is attached to and detached from the electronic device body so as to protrude from the bottom plane When dropped on a flat dropping place in a drop test, the detachable structure portion may first come in contact with another portion, and vice versa.

[0004] Since the battery pack does not fall flat, an overload is applied to a specific portion of the battery pack. In particular, cracks may occur on the long side of the surrounding wall constituting the battery pack box. As a result, the product itself becomes defective. Also, even if no crack is generated in the drop test, if it is dropped during normal use, there is a concern that cracks may occur. In particular, cracks often occur on the long side wall of the battery case.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make a part of a side wall portion of a battery pack main body, which is mostly flat on the mounting side to an electronic device main body and has a protruding engagement portion, more than other parts. An object of the present invention is to provide a reinforcing structure of a battery pack which does not cause cracks in a drop test and has no fear of cracking even when dropped while being mounted on an electronic device main body by making the width wide.

[0006]

Means for solving the problems of the present invention are box-shaped, in which at least a battery is housed, and which can be attached to an electronic device main body. A flat battery pack body, an engagement portion formed on one of the opposed side walls of the battery pack body in a structure to be engaged with the electronic device body on the electronic device body side of the battery pack body; When the battery pack body is dropped on a flat surface with the engaging portion down, a part of the other opposing side wall part of the battery pack main body, which is subjected to the most load, comprises a wide side wall part wider than the other part. Characteristic battery pack reinforcement structure.

[0007]

When a part of the side wall of the battery pack body is dropped by reinforcing it wider than the other parts, the battery pack body can be prevented from cracking and there is no danger. In particular, the present invention is suitable for a battery pack having a structure in which a portion to be engaged with the electronic device main body protrudes from another generally planar portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings, FIGS. 1 and 2, wherein FIG. FIG. 2 is a schematic perspective view of the battery pack main body in which the electronic device main body is housed, that is, seen from the back side of the electronic device main body. The battery pack body 1 is a box with a bottom and has a periphery formed of side walls 2, 3, 4, and 5. Although the bottom side of the bottom is open, it is closed after the battery B is housed and a predetermined temperature compensation circuit is connected to form a circuit.

The engaging portion 6 attached to the main body of the electronic device projects though it is generally planar. The battery pack body 1 configured as described above has side walls 2, 3, 4, 5,
The side walls 4 and 5
The portion near the engaging portion 6 is made wider. As the distance from the engaging portion 6 to the position of the engaging portion 6 increases, the width is gradually narrowed so as to be the same as that of the other width. When the battery pack main body 1 containing a battery having a considerable weight in the plane portion H as shown in FIG. 2 is dropped by widening the portion in this way, the most significant load is applied to the portion A in the diagram. Such an impact can be absorbed and reinforced to prevent cracking. It is needless to say that the wide portion does not need to be constituted by the same width portion as the engaging portion 6 and can be changed as appropriate.

[0010]

As described above, the present invention has a box shape in which at least a battery is housed and which can be attached to the electronic device main body, and a battery pack main body which is mostly flat on the side of attachment to the electronic device main body. An engaging portion formed on one of the opposed side walls of the battery pack main body in a structure to be engaged with the electronic device main body on the side of the electronic device main body of the battery pack main body, The battery pack is characterized in that it has a wide side wall part in which a part of the other opposing side wall part of the battery pack main body, which is the most loaded when dropped on a plane, is wider than the other part. Construction.

[Brief description of the drawings]

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

FIG. 2 is a view showing a case where the battery pack body of FIG. 1 is dropped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery pack main body 2, 3, 4, 5 Side wall 6 Engagement part

Claims (1)

[Claims] 1. A battery pack body having at least a battery housed therein and attachable to an electronic device main body, and a battery pack main body that is mostly flat on a side to be attached to the electronic device main body, and the electronic device of the battery pack main body. An engaging portion formed on one of the opposed side walls of the battery pack body in a structure in which the electronic device body is engaged with the device main body side, and when the engaging portion is dropped on a flat surface with the engaging portion down, the load is reduced. A reinforcing structure for a battery pack, comprising: a wide side wall part in which a part of the other opposing side wall part of the battery pack main body is wider than other parts.