Earphone wire winding box with coaxial and dual wheels

Details Earphone wire winding box with coaxial and dual wheels Earphone wire winding box with coaxial and dual wheels

2001-11-16

2002-08-13

Le, Huyen (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

C381S384000, C455S090300, C242S400100

Reexamination Certificate

active

06434249

ABSTRACT:

BACKGROUND OF THE INVENTION
1) Field of the Invention
The present invention provides an earphone wire winding box with coaxial and dual wheels, more especially an earphone wire winding box of a conductive structure without jointed point.
2) Description of the Prior Art
Accordingly, the conventional earphone wire winding box, as shown in
FIGS. 19 and 20
, comprises a fixed and immovable disk of a printed circuit (PC) board (A) with a plurality of copper ring planes (A
1
, A
2
, A
3
, A
4
) plated on the outer plate surface; the communication input end of the PC board (A) connects with the plug wire (B) of the earphone; a turning wheel (C) with a spiral spring (not shown in the FIG.) inside can store the earphone wire (D
1
); the outer disk surface of the turning wheel (C) connects with conductive contacting springs (C
1
, C
2
, C
3
, C
4
) correspondingly contacting with the copper ring planes (A
1
, A
2
, A
3
, A
4
); wherein, the connecting end of the earphone wire (D
1
) connects with the input ends of the contacting springs (C
1
, C
2
, C
3
, C
4
); the turning wheel (C) is lively jointed to the axel (E) and the PC board (A) is firmed secured to the axel (E); thereby, when the earphone wire (D
1
) is pulled out, the turning wheel (C) rotates and the contacting springs (C
1
, C
2
, C
3
, C
4
) rotate synchronously; in other words, the contacting springs (C
1
, C
2
, C
3
, C
4
) continuously frictionize and contact the copper ring planes (A
1
, A
2
, A
3
, A
4
) to communicate the plug wire (B) and the circuit signal of the earphone wire (D
1
).
However, after a long period of application, the prior art has the following shortcomings:
1. Since the soldered portions of the earphone wire (D
1
) and the input ends of the contacting springs (C
1
, C
2
, C
3
, C
4
) are weak, after the torsion generated by the turning wheel (C) rotated for a long time, the connection ends between the earphone wire (D
1
) and the contacting springs (C
1
, C
2
, C
3
, C
4
) might get loosened under force.
2. The contacting springs (C
1
, C
2
, C
3
, C
4
) repetitively frintionize the copper ring planes (A
1
, A
2
, A
3
, A
4
); that wears away both of them and finally results in undesirable connection or short circuit.
Therefore, how to completely eliminate the aforementioned shortcomings is the issue researched by the present invention.
SUMMARY OF THE INVENTION
The primary objective of present invention is to provide an earphone wire winding box with coaxial and dual wheels to have one wire designed as both the earphone wire and the plug wire to completely eliminate the conductive structure and never have any undesired connecting situation between them.
Another objective of the present invention is to provide an earphone wire winding box with coaxial and dual wheels by having two ends respectively used as an earphone communication wire and a plug communication wire; the said communication wires can coil around the axial planes of the coaxial shafts of different outer diameters; thereby when a long distance of the length of the earphone wire on the wheel plane of a longer diameter is pulled out, only a extremely short distance of the length of the plug wire on the wheel plane of a shorter diameter descends so as to achieve the application of using the same wire for both the earphone and the plug communication wires.
Yet another objective of the present invention is to provide an earphone wire winding box with coaxial and dual wheels, through the retaining device disposed on the surface of the outer case body, a mobile phone or its outer cover can be rapidly retained or detached.
To enable a further understanding of the structural features and the technical contents, the brief description of the drawings below is followed by the detailed description of the preferred embodiment.


REFERENCES:
patent: 3984645 (1976-10-01), Kresch
patent: 5684883 (1997-11-01), Chen
patent: 5706353 (1998-01-01), Arai et al.

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