JP2704706B2 - Power contact structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact structure of an electronic device, and more particularly to a power supply contact structure for connecting a main body of an electronic device to a battery pack in a portable electronic device.

[0002]

2. Description of the Related Art FIG. 3 shows a main body 1 of a portable telephone.
FIG. 4 shows a battery pack 2 mounted on the mobile phone. The battery pack 2 is formed by fitting an engagement protrusion 4 of the battery pack 2 into a fitting groove 3 of the mobile phone body 1 and sliding the same. The mobile phone body 1 and the battery pack 2 can be combined.

A power receiving contact 5 is provided on the portable telephone body 1 side, and a power supply contact 6 is provided on the battery pack 2 side. The power receiving contact 5 and the power supply contact 6 constitute a power contact structure. In this state, the power receiving contact 5 and the power supply contact 6 are in contact with each other, so that power can be supplied from the battery pack 2 to an electronic board (not shown) inside the mobile phone main body 1.

A conventional power contact structure will be described with reference to FIG.

FIG. 5 is a view corresponding to the view taken in the direction of the arrow A in FIG. 3. The portable telephone body 1 has a front case 7 and an inner panel 8, which form a main body case. The constituent electronic substrate 9 is stored. The battery pack 2 includes a rear case 10 and an inner cover 1.
1 form a battery pack case, and a storage battery (not shown) is housed inside the battery pack case.

[0006] A power receiving contact 12 formed by bending a band-shaped metal plate is fixed to the electronic substrate 9.
The second apex portion 12a penetrates a window hole 13 formed in the inner panel 8 and is exposed outside the inner panel 8.
Further, the apex portion 12a can be displaced by the elasticity of the power receiving contact 12 itself.

When the battery pack 2 is loaded into the main body 1 of the portable telephone, the power receiving contact 12 comes into contact with the power supply contact 6 on the battery pack 2 side, and the power receiving contact 12 and the power receiving contact 12 are connected to each other. Thus, the electronic board 9 is supplied with power from the battery pack 2 and can operate as a mobile phone.

[0008]

As described above, in the conventional power supply contact structure, the power receiving contact 12 penetrates the inner panel 8 and contacts the power supply contact 6, and the inner panel 8 has a power receiving contact. A window hole 13 for penetrating the contact 12 is formed. Therefore, when the battery pack 2 is removed,
The inside of the mobile phone main body 1 communicates with the outside through the window hole 13. Therefore, when it is necessary to replace the battery pack 2 outdoors in the rain, for example, rainwater enters through the window hole 13 and
There is a risk of causing a short circuit accident of the electronic circuit.

The present invention has been made in view of the above circumstances, and has an object to complete the waterproof function of the power contact structure to prevent an accident caused by rainwater entering from the power contact structure.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a power supply contact structure for electrically connecting an electronic device main body and a battery pack mounted on the electronic device main body. A relay contact is provided in a liquid-tight manner on an inner panel that is in contact with the battery pack, and the relay contact is brought into contact with a power receiving contact of an electronic substrate housed inside the electronic device main body and is capable of contacting a power supply contact of the battery pack. It is characterized by the following.

[0011]

When the battery pack is mounted on the body of the mobile phone, the power supply contact of the battery pack is electrically connected to the electronic board inside the body of the mobile phone via the relay contact, and when the battery pack is removed, the relay contact is connected. Since the mobile phone body is provided in a liquid-tight manner, water flows from the relay contact to the mobile phone body 1
Does not penetrate inside.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the same components as those shown in FIG. 5 are denoted by the same reference numerals.

FIG. 1 is a view corresponding to the arrow A in FIG. 3. The main body 1 of the portable telephone body 1 is formed by a front case 7 and an inner panel 14, and electronic components are mounted inside the main body case to form an electronic circuit. The constituent electronic substrate 9 is stored. The battery pack 2 includes a rear case 10 and an inner cover 1.
1 form a battery pack case, and a storage battery (not shown) is housed inside the battery pack case.

A power receiving contact 15 formed by bending a band-shaped metal plate is fixed to the electronic substrate 9, and a relay contact 16 is liquid-tightly fitted to the inner panel 14 at a position facing the power receiving contact 15. I do. The power receiving contact 15 is pressed against the relay contact 16 by the elasticity of the power receiving contact 15 itself.

The relay contact 16 will be described with reference to FIG.

The inner tube 18 is fitted to the outer tube 17 whose one end is closed. An inner flange 18a is formed at an end of the inner tube 18 on the side opposite to the outer tube 17. A movable contact 19 having a hollow semi-spherical shape is slidably fitted to the inner tube 18 on the side opposite to the outer tube 17, and an outer flange 19 a is formed on the periphery of the movable contact 19 to form the outer flange 1.
9a can be engaged with the inner flange 18a. A compression spring 20 is fitted between the outer tube 17 and the movable contact 19 to urge the movable contact 19 in a projecting direction. The movable contact 19 includes the outer flange 19a and the inner flange 18a.
Withdrawal is prevented by engagement with.

When the battery pack 2 is loaded into the portable telephone body 1, the movable contact 19 comes into contact with the power supply contact 6 on the battery pack 2 side, and the power supply contact 6, the movable contact 19, Spring 20, outer tube 1
7. The electronic board 9 is supplied with power from the battery pack 2 via the power receiving contact 15 and can operate as a mobile phone.

Even when the battery pack 2 is removed, the relay contacts 16 are provided in a liquid-tight manner on the inner panel 14, so that the liquid-tight body of the portable telephone body 1 is not broken, and rainwater or the like is not broken. Penetration is prevented.

Various modifications of the relay contact 16 are conceivable. For example, the relay contact 16 is a leaf spring contact, one end of the leaf spring contact is exposed so as to contact the power receiving contact 15, and the other end is exposed. For example, it may be exposed so as to be in contact with the power supply contact 6 and may be embedded in the inner panel 14. Although the above embodiment has been described with reference to a mobile phone, it is needless to say that the present invention can be applied to a portable electronic device using a battery pack.

[0021]

As described above, according to the present invention, the power supply contact structure can be configured in a liquid-tight state, and when used outdoors or the like, it is possible to prevent the occurrence of accidents caused by rainwater or the like entering the mobile phone body 1. In addition, excellent effects such as prevention of contact failure due to intrusion of dust and the like can be exhibited.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, corresponding to an arrow A in FIG.

FIG. 2 is an enlarged sectional view of a relay contact in the embodiment.

FIG. 3 is a perspective view showing an appearance of a mobile phone main body.

FIG. 4 is a perspective view showing an appearance of a battery pack mounted on the mobile phone main body.

FIG. 5 is a cross-sectional view showing a conventional example, which is equivalent to the arrow A in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cellular phone main body 2 Battery pack 6 Power supply contact 15 Power receiving contact 16 Relay contact 17 Outer tube 18 Inner tube 19 Movable contact

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tatsuya Okawa 3--14-20 Higashinakano, Nakano-ku, Tokyo International Electric Company (72) Ryuichi Takahashi 3-14-20 Higashinakano, Nakano-ku, Tokyo Country (56) References JP-A 62-20467 (JP, U) JP-A 3-24226 (JP, U)

Claims (2)

(57) [Claims] In a power supply contact structure for electrically connecting an electronic device main body and a battery pack mounted on the electronic device main body, an inner panel which forms a part of a case of the electronic device main body and is in contact with the battery pack is provided. A power contact structure, wherein a relay contact is provided in a liquid-tight manner, and the relay contact is brought into contact with a power receiving contact of an electronic board housed inside the electronic device main body and is capable of contacting a power supply contact of the battery pack. 2. A relay contact, wherein an inner tube is fitted to an outer tube, a movable contact is fitted on a side of the inner tube opposite to the outer tube, and a compression spring for urging the movable contact in a projecting direction is provided on the inner tube. The power supply contact structure according to claim 1, wherein the power supply contact structure is provided inside.