JP2001187675A - Electric cord winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric cord winder causing no wear at an electric contact part. SOLUTION: A reel 6 capable of winding the electric cord 2 is attached rotatably around a reel shaft 7. A plurality of electric contacts 11A, 11B connected, respectively, with a plurality of electric wires 10A, 10B contained in the electric cord 2 wound onto the reel are disposed, on the inner periphery surface of the reel 6, in parallel along the axial direction of the reel shaft 7, a plurality of electric contacts 12A, 12B connected with electric wires 13A, 13B to be electrically-connected to the electric wires 10A, 10B in the electric cord 2 is disposed, on the outer periphery surface of the reel shaft 7, so as to meet the positions of the electric contacts 11A, 11B on the reel side, and a plurality of spiral conductive bodies 8A, 8B are interposed in parallel whose both ends are brought into contact with the mutually corresponding electric contacts 11A, 11B on the reel side and electric contacts 12A, 12B on the real shaft side respectively to electrically-connect both the two electric contacts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cord winding device capable of winding and storing an electric cord.

[0002]

2. Description of the Related Art Conventionally, as a mechanism for winding and storing an electric cord including a plurality of electric wires such as a connection cord of an earphone and a power cord of a vacuum cleaner, each electric wire is connected to a reel for winding the electric cord. A device in which a plurality of electrical contacts are provided, and a plurality of annular electrical contacts are provided on a reel support rotatably supporting the reel, the plurality of annular electrical contacts slidingly contacting the electrical contacts of the reel, and the plurality of annular electrical contacts are connected to an earphone. And the structure connected to the vacuum cleaner body was adopted.

[0003]

In the above-mentioned conventional mechanism, when the electric cord is wound or unwound, the electric contact on the reel side and the annular electric contact on the reel support side are in sliding contact with each other. However, there is a problem that abnormalities such as poor contact and electric discharge easily occur. Therefore, an object of the present invention is to provide an electric cord winding device in which abrasion does not occur in an electric contact portion.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. That is, the electric cord winding device according to the present invention is configured such that a reel capable of winding the electric cord is rotatably mounted around the reel axis, and is built in the electric cord wound around the reel on the inner peripheral surface of the reel. A plurality of electrical contacts respectively connected to a plurality of electric wires are provided in parallel along the axial direction of the reel shaft, and electrically connected to the electric wires in the electric cord on the outer peripheral surface of the reel shaft. A plurality of electrical contacts connected to the electric wire are provided corresponding to the positions of the electrical contacts on the reel side, and between the reel and the reel shaft, both ends correspond to the electrical contacts on the reel side and the electrical contacts on the reel shaft side. It is characterized in that a plurality of mainspring-shaped conductors that are in contact with the contacts and electrically connect the two electrical contacts are interposed in parallel.

Further, in the above invention, it is practically preferable that the mainspring-shaped conductor also serves as an urging means for urging the reel in the electric cord winding direction or the rewinding direction.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. 1 and 2 are diagrams showing the configuration of the present invention. In the drawing, reference numeral 1 denotes an electric cord winding device of the present invention, reference numeral 2 denotes an electric cord wound and stored by the electric cord winding device, and reference numeral 3 denotes the electric cord wound and stored by the electric cord winding device. The electric cord is electrically connected via the winding device 1. The illustrated electric cord winding device 1 is used for winding an earphone cord of a portable stereo or the like. An earphone 4 is attached to a tip of the electric cord 2, and a main body is attached to a tip of the electric cord 3. A plug 5 to be attached to a jack of the audio equipment is attached.

The electric cord winding device 1 includes a reel 6 for winding the electric cord 2, a reel shaft 7 rotatably supporting the reel, an electric connection between the electric cord 2 and the electric cord 3, and an electric connection between the reel 6 and the electric cord 3. It is composed of spring-like conductors 8A and 8B as urging means for urging in the cord winding direction.

As shown in FIG. 3, the reel 6 has a cylindrical portion 6c formed on the outer periphery of a disk portion 6b having a reel shaft insertion hole 6a, and further has flange portions 6d, 6d at both ends of the cylindrical portion 6c.
d is formed. The end of the electric cord 2 opposite to the earphone 4 is fixed to a fixing recess 6e formed on the outer peripheral surface of the cylindrical portion 6a. Then, two electric wires 13A, 13B contained in the electric cord 3 are connected to the electric contacts 11A, 11B. This electrical contact 1
Locking holes 6f, 6f facing the inner peripheral surface of the cylindrical portion 6a and locking the outer ends of the mainspring conductors 8A, 8B.
Are formed.

As shown in FIG. 4, locking grooves 7a for locking the inner ends of the mainspring-shaped conductors 8A and 8B are formed at both ends of the reel shaft 7, and the locking grooves 7a Electrical contacts 12A and 12B are provided facing the groove. Lead wires 13A, 13B connected to both electrical contacts 12A, 12B
Is taken out to one end face of the reel shaft 7 and the electric cord 3
Are connected to two electric wires 13A and 13B built in the.

As shown in FIG. 5, the mainspring-shaped conductor 8A (8B) has locking portions 8a and 8b formed at an outer end and an inner end, and the locking portions 8a and 8b are connected to a reel. Blind hole 6
f, and are interposed between the reel 6 and the reel shaft 7 while being locked in the locking grooves 7a of the reel shaft, respectively. Thus, the electrical contacts 11A (11B) on the reel side and the electrical contacts 12A (12B) on the reel shaft are electrically connected, and the reel 6 is urged against the reel shaft 7 in the electric cord winding direction. You.

The electric cord winding device 1 has the above configuration. When the reel 6 is rotated with the reel shaft 7 as a fulcrum, the electric cord 2 is wound or unwound on the reel 6. The phase change between the reel 6 and the reel shaft 7 is dealt with by changing the winding state of the mainspring conductors 8A and 8B. For this reason, the reel side electrical contacts 11
A (11B) and the mainspring-shaped conductor 8A (B), and the mainspring-shaped conductor 8A (B) and the electrical contact 12A on the reel shaft side
The relative positional relationship of (12B) does not always change, and wear due to sliding contact does not occur at these locations.

In practice, a suitable case 15 is provided outside the electric cord winding device 1. Further, a lock mechanism for locking the rotation of the reel 6 in the electric cord winding direction, a release mechanism for releasing the function of the lock mechanism, and the like are provided as necessary.

In the above embodiment, since the winding device of the electric cord 2 incorporates two electric wires, the mainspring-like conductor 8A (8B) and the electric contacts 11A, 12A (11B, 1
2B) are provided in parallel along the axial direction of the reel shaft 7. The present invention is not limited to this, and may be configured as an electric cord winding device incorporating three or more electric wires.

For example, FIG. 6 shows an electric cord winding device incorporating four electric wires. Since the basic structure of the electric cord winding device 1 'is the same as that of the electric cord winding device 1 shown in FIGS. 1 and 2, detailed description thereof will be omitted. 8A to 8D are mainspring conductors, 11A to 11D are electrical contacts on the reel 6, and 12A to 12D are electrical contacts on the reel shaft 7. These are arranged in parallel along the axial direction of the reel shaft 7. ing.

In the above embodiment, the electric cord winding device is
Although the case where it is used to wind up an earphone cord of a portable stereo or the like has been described, an outlet 20 is connected to the end of the electric cord 2 when it is used in a winding section of a power cord such as a vacuum cleaner. The motor 30 may be connected to the end of the electric cord 3.

[0016]

As is apparent from the above description, the electric cord winding device according to the present invention has no electric contact portions which are in sliding contact with each other when winding or unwinding the electric cord. Wear at the contact portion does not occur, and occurrence of poor contact or electric discharge can be prevented.

[Brief description of the drawings]

FIG. 1 is a front sectional view of an electric cord winding device of the present invention.

FIG. 2 is a side view of the electric cord winding device of the present invention.

FIG. 3 is a perspective view of a reel.

FIG. 4 is a perspective view of a reel shaft.

FIG. 5 is a perspective view of a mainspring-shaped conductor.

FIG. 6 is a front sectional view of a different electric cord winding device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 electric cord winding device 2 electric cord wound up and stored 3 electric cord connected to electric cord wound up and stored 6 reel 7 reel shaft 8A, 8B mainspring-shaped conductor 11A, 11B reel-side electric contact 12A, 12B Electrical contact on reel shaft side

Claims (2)

[Claims] A reel capable of winding an electric cord is rotatably mounted around a reel axis, and a plurality of electric wires built into the electric cord wound on the reel are individually mounted on an inner peripheral surface of the reel. A plurality of connected electrical contacts are provided in parallel along the axial direction of the reel shaft, and a plurality of electrical contacts connected to wires to be electrically connected to wires in the electrical cord on the outer peripheral surface of the reel shaft. Are provided corresponding to the positions of the electrical contacts on the reel side, and between the reel and the reel shaft, both ends contact the corresponding electrical contacts on the reel side and the electrical contacts on the reel shaft side, respectively. An electric cord winding device comprising a plurality of mainspring-like conductors electrically connecting electrical contacts to each other in parallel. 2. The electric cord winding device according to claim 1, wherein the mainspring-like conductor also serves as urging means for urging the reel in the electric cord winding direction or the unwinding direction.