JPH0955785A - Power terminal structure for power reception of portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely maintain reliable contact between a contact piece and the power terminal of a battery pack even when the battery pack is repeatedly attached and detached. SOLUTION: When a battery pack 2 is attached, the battery pack 2 is pressed down along an arrow A while abutting against a semicircular plate 32b as shown in the Fig. (a). The semicircular plate 32b rotated around a support shaft 32b as shown by an arrow E and the other end 31b of the L-shaped contact piece 31 is moved slantingly upward (arrow F). Then the bent part 31c of the contact piece 31 comes into contact with the power terminal of the battery pack 2 as shown in the Fig. (b). At this time, the bent part 31c of the contact piece is pressed while rubbed against the surface of the power terminal 21, so even if dirts stick they are removed to secure the contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power receiving terminal structure for a portable telephone, and more particularly to a power receiving terminal for receiving power from a power terminal of a battery pack mounted on the portable telephone.

[0002]

2. Description of the Related Art Generally, a battery pack storage recess 11 for mounting a battery pack 2 is provided on the back side of a portable telephone body, as shown in FIG. Further, a power receiving power supply terminal 3 is provided to receive power from the battery pack 2 mounted in the battery pack storage recess 11. That is, when the battery pack 2 is mounted in the battery pack storage recess 11, the power receiving power terminal 3 comes into contact with the power terminal 21 of the battery pack,
Power is supplied to the mobile phone body 1.

[0003] In order to hold the battery pack 2 in the battery pack storage recess 11, a locking groove 12 and a hook 13 are provided at both ends of the battery pack storage recess 11, and both ends of the battery pack 2 are provided at both ends. A locking claw 22 and a locking groove 23 are provided to engage with each other.

FIG. 3 is a cross-sectional view showing a power receiving power terminal of a conventional portable telephone. A contact piece 301 for contacting a power terminal of a battery pack and a case 30 for accommodating the contact piece 301 are shown.
2 are formed.

[0005] The contact piece 301 is formed in an L-shape with an elastic conductive metal, and one end side a is fixed by a case 302 and the other end side b is movably engaged by the case 302. Has been stopped. The bent portion c usually protrudes from the case surface due to the restoring force of the contact piece. When the battery pack 2 is mounted in the battery pack storage recess 11, the bent portion c of the contact piece 301 is pressed by the power supply terminal 21 of the battery pack 2 to make contact, and receives power from the battery pack 2.

[0006]

As described above, in the conventional power receiving terminal structure, the bent portion of the L-shaped contact piece having elasticity is projected from the case surface so as to contact the power terminal of the battery pack. I have to. However, during repeated attachment and detachment of the battery pack, the contact piece is deformed and the contact pressure is reduced, and because the contact piece becomes dirty, poor contact with the power terminal of the battery pack occurs. There is a problem that.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power receiving terminal structure for a portable telephone which can reliably maintain contact between a contact piece and a power terminal of a battery pack even when a battery pack is repeatedly attached and detached.

[0008]

According to the power supply terminal structure for a portable telephone of the present invention, one end of an L-shaped contact piece that contacts a power terminal of a battery pack is fixed, and the other end of the contact piece is By moving the battery pack obliquely upward when mounting the battery pack, the bent portion of the contact piece is configured to be pressed against the power supply terminal surface of the battery pack while rubbing.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a power receiving power supply terminal of the present invention, and FIG. 2 is a sectional view taken along the line YY shown in FIG. The power supply terminal of the battery pack is assumed to be composed of three terminals as shown in FIG.

As shown in FIG. 1, the power receiving power supply terminal 30 includes a plurality of (three) contact pieces 31 disposed adjacent to and in contact with the power supply terminals of the battery pack, respectively. It has a rotating part 32 that is depressed and turned when mounted, and a case 33 that houses the contact piece 31 and the rotating part 32.

The contact piece 31 is formed in an L-shape from a conductive metal having elasticity. As shown in FIG. 2, one end 31a is fixed to the case 33 and the other end 31a is fixed.
b is supported by the rotating part 32. Also, the bent portion 31c contacts the power terminal of the battery pack.

The rotating portion 32 has two semicircular plates 32a and 32b disposed in parallel with the contact piece 31, and these two semicircular plates sandwich the contact piece 31 from both sides. Are located. Then, the two semicircular plates 32a, 32
b is connected at one end side by a connecting portion 32c,
The connecting portion 32c supports the other end 31b of each of the plurality of contact pieces.

The rotating part 32 includes a semicircular plate 32a,
It is supported rotatably about a support shaft 32d eccentrically provided on the base 32b. Normally, a part of the arc of the semicircular plates 32a, 32b protrudes from the case surface by the restoring force of the contact piece 31. It is in a state.

Next, the operation when the battery pack is mounted is shown in FIG.
This will be described with reference to FIG.

As shown in FIG. 2A, the battery pack 2
Approaches the power receiving power supply terminal 30 in the direction of arrow A, contacts the semicircular plates 32a and 32b of the rotating portion 32, and pushes down in the direction of arrow A. As the rotating part 32 rotates about the support shaft 32d in the direction of arrow E, the other end 31b of the contact piece
Moves diagonally upward. Then, as shown in FIG. 2B, the L-shaped portion 31 c of the contact piece contacts the power terminal 21 of the battery pack 2.

In this case, the bent portion 31c of the contact piece is pushed up obliquely upward (in the direction of arrow F) and contacts the power supply terminal 21 of the battery pack 2 when the power supply terminal 21 is contacted.
The surface is pressed while being rubbed, so that even if dirt or the like is adhered, it is removed to ensure contact.

[0018]

As described above, according to the present invention, one end of the L-shaped contact piece that contacts the power terminal of the battery pack is fixed, and the other end is one end portion of the arc of the semicircular plate. When the battery pack is mounted, the other end of the contact piece is moved obliquely upward by mounting the battery pack by rotatably supporting a part of the arc of the semicircular plate by projecting from the case surface. Since the bent portion of the contact piece also moves diagonally upward and rubs the power supply terminal surface of the battery pack while pressing, the contact state can be reliably maintained even when the battery pack is repeatedly attached and detached.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view taken along the line YY shown in FIG. 1, illustrating an operation when a battery pack is mounted.

FIG. 3 is a cross-sectional view showing a power receiving terminal of a conventional mobile phone.

FIG. 4 is a perspective view showing a battery pack storage recess provided on the back surface of the mobile phone and a battery pack to be mounted.

[Explanation of symbols]

 2 Battery Pack 21 Battery Pack Power Terminal 30 Power Receiving Power Terminal 31 Contact Piece 32 Rotating Part 32a, 32b Semicircular Plate 32c Connecting Portion 32d Supporting Shaft 33 Case

Claims (2)

[Claims] 1. A power receiving terminal structure for receiving power from a power terminal of a battery pack mounted on a mobile phone, comprising: a case of the power receiving terminal; and an L-shaped member made of an elastic conductive metal. Are fixed to the case, the other end is movably supported, and a bent portion is in contact with a power terminal of the battery pack; and a contact piece is formed in a semicircular shape and disposed in parallel with the contact piece;
A semicircular plate having one end portion of a semicircular arc supporting the other end of the contact piece; and a semicircular plate provided at an eccentric position of the semicircular plate so that the semicircular plate is rotatable. And a support shaft for supporting the arc portion of the semicircular plate so as to protrude from the surface of the case by a restoring force of the contact piece, and when mounting the battery pack, A part of the semicircular plate protruding from the surface being pressed by the battery pack and rotating around the support shaft, the other end of the contact piece being moved obliquely upward; Power receiving terminal structure. 2. A plurality of contact pieces are arranged adjacent to each other corresponding to a power terminal of the battery pack, and the semicircular plates are arranged so as to sandwich the plurality of contact pieces from both sides. Wherein one of the two semicircular plates has a connecting portion connected at one of the arc ends thereof, and the connecting portion supports the other ends of the plurality of contact pieces, respectively. Item 2. A power receiving terminal structure for a mobile phone according to Item 1.