JPH07327292A - Cord holding device - Google Patents

Abstract

PURPOSE:To prevent a cord or the code holding device itself from being broken by a contact even after long-period use by providing a holding member which holds the cord on a band and is gradually movable along the band each time a force is received from the cord. CONSTITUTION:The hard band 20 is a metallic band covered with a flexible cover made of vinyl chloride, etc. Consequently, an electric cord can be arranged between the metallic cord and cover and the cord holding member 26 is formed of an elastic material such as synthetic rubber and vinyl chloride and made cylindrical having an internal diameter less than the width of the band 20. In this case, the position where the cord 24 comes into contact with the cord holding member 26 outside the cord holding member 26 moves toward an earphone 22 even a little each time the cord 24 is bent so as to cross the extension direction of the band 20, so bending stress is not concentrated on one specific point on the cord 24 even when the cord is bent repeatedly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord holding device for holding a cord connectable to electric equipment on a hard band.

[0002]

2. Description of the Related Art A cord holding device as described above is used in a binaural earphone as shown in FIG.
The binaural earphones include a substantially U-shaped band 10 and a pair of earphones 12a, 1a attached to both ends of the band 10.
2b and an electric cord 14 extending from one end of the earphone 12b. A free end (not shown) of the electric cord 14 is connected to an unillustrated audio device such as a tape recorder by a known connection such as a plug. It is connected to the attachment / detachment means by means. In order to prevent the electric cord 14 from being damaged by the external force applied to the electric cord 14 being concentrated at the connection end with the corresponding earphone 12b,
A cord holding member 1 made of plastic before the connecting end
6 is used to hold the band. The earphone 12a is electrically connected to the electric cord 14 by an electric cord (not shown) arranged in the band 10.

[0003]

The conventional cord holding member 16 is, as shown particularly well in FIGS. 2A and 2B,
It is formed at a predetermined position on the band 10 by injection molding of plastic and is fixed at the predetermined position. Therefore, when a bending force is applied to the electric cord 14 in a direction intersecting with the extending direction of the band 10, the bending force is applied to the contact point between the electric cord 14 and the cord holding member 16 outside the cord holding member 16. The electric cord 14 or the cord holding member 16 is likely to be damaged at the contact after being concentrated and used for a long time. Further, the manufacturing cost of the cord holding member 16 formed by injection molding of plastic is high.

The present invention has been made under the above circumstances, and an object of the present invention is that the manufacturing cost is low, and even if a bending force is applied to the cord in a direction intersecting the extension direction of the band, the contact point with the cord is It is an object of the present invention to provide a cord holding device in which bending force is not concentrated, and the cord or the cord itself is not damaged at the contacts even after long-term use.

[0005]

In order to achieve the above-mentioned object of the present invention, a cord holding device according to the present invention is:
A hard band; a cord connectable to an electric device; a cord holding member that holds the cord on the band and can gradually move along the band each time a force from the cord is received; .

In the cord holding device according to the present invention having the above-mentioned structure, the cord holding member is preferably an elastic cylindrical tube, and the hard band is flexible. It is preferably a metal band covered with a cover.

[0007]

In the cord holding device according to the present invention having the above-mentioned structure, the cord holding member for holding the cord connectable to the electric equipment in the hard band is provided every time the force from the cord is received. Gradually move along the band.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cord holding device according to an embodiment of the present invention will be described below in detail with reference to FIGS. 3 (A), 3 (B) and 3 (C). 3A and 3B, a hard band 20 and a cord 24 extended from an earphone 22 which is an electric device attached to one end of the band 20,
Band 2 at a position where cord 24 is separated from earphone 22
And a cord holding member 26 held at 0,
3A is a front view, and FIG. 3B is a right side view.

In this embodiment, the hard band 20 is a metal band covered with a flexible cover such as vinyl chloride. With such a structure, the electric cord can be arranged between the metal band and the cover.

The cord holding member 26 is made of an elastic material such as synthetic rubber or vinyl chloride and has a cylindrical shape having an inner diameter smaller than the width of the band 20. The cord 24 from the earphone 22 is inserted into the cord holding member 26 before the earphone 22 is attached to one end of the band 20, and then fitted on the band 20 together with the cord 24.

The cord holding member 26 as described above is selected from various ready-made tubes which are made of various elastic materials and have various sizes according to the width of the band 20 and the thickness of the cord 24. Since it is used after being used, it can be easily prepared at a low cost, and it is possible to easily cope with changes in the width of the band 20 and the thickness of the cord 24.

In the cord holding device according to the embodiment of the present invention constructed as described above, for example, the cord 24 is bent in a certain direction intersecting the extending direction of the band 20 as shown in FIG. 3C. If so, the pulling force F that causes the bending causes a force W for expanding the diameter of the cord holding member 26 at a position where the cord 24 outside the cord holding member 26 contacts the cord holding member 26, Figure 3
The cord holding member 26 is elastically deformed as indicated by a chain double-dashed line 26a on the left side of the cord holding member 26 indicated by a solid line in (C).

When the horizontal component and the vertical component of the force W are WX and M, respectively, the vertical component M causes the cord holding member 26 to approach the earphone 22. Such movement of the cord holding member 26 is in a direction different from the bending of the cord 24 in a certain direction indicated by the above-described solid line as shown by the chain double-dashed line in FIG. 3C. The same occurs when bent by the pulling force F'to the same direction as described above.

Therefore, every time the cord 24 is bent once in a certain direction intersecting the extending direction of the band 20, the earphone 22 is located at a position where the cord 24 contacts the cord holding member 26 outside the cord holding member 26. Since it moves toward the opposite side, although it is extremely small, the bending stress does not always concentrate at a predetermined point on the cord 24 even if the above-described bending is repeated. Therefore, the cord 24 will not be damaged by repeated bending as described above.

Also in the cord holding member 26, a part of the force W is converted into the vertical component M and the cord holding member 26 is moved as described above, so that the horizontal component is loaded on the cord holding member 26. In connection with the fact that WX is weakened and the cord holding member 26 is made of an elastic material, the cord holding member 26 is not damaged by the repetition of the force W.

In the cord holder according to the above-described embodiment, the hard band 20 is a metal band covered with a flexible cover such as vinyl chloride, but the hard band 20 is made of metal. It may be a band made of synthetic resin or a band made of a synthetic resin which is not flexible and hard and has a proper elasticity. However, the band 20 composed of only the metal band is designed so that the cord holding member 26 is not bent when the cord holding member 26 is subjected to the bending as described above.
The above-mentioned force W that is generated in the above-mentioned step becomes larger than that in the case of the above-described embodiment. A band made of a synthetic resin that is not flexible and hard and has a proper elasticity is more expensive than a metal band.

The technical idea of the cord holding device according to the embodiment of the present invention as described above will be summarized as follows. 1. A rigid band; a cord that can be connected to electrical equipment;
And a cord holding member capable of gradually moving along the band each time the cord is held on the band and receives a force from the cord.

With such a construction, the manufacturing cost is low, and even if a bending force is applied to the cord in a direction intersecting the extending direction of the band, the bending force is not concentrated at the contact point with the cord, Even after long-term use, the contacts will not damage the cord or itself.

2. In the cord holding device described in the above item 1, the cord holding member is preferably an elastic cylindrical tube. The elastic cylindrical tube is used by selecting the most suitable one according to the width of the band and the thickness of the cord from various ready-made tubes that are formed in various dimensions by materials having various elasticity. It can be easily prepared at a low cost, and can easily accommodate changes in band width and cord thickness.

3. Further, in the cord holding device described in the item 1, it is preferable that the hard band is a metal band covered with a flexible cover. The hard band may be a metal band or a band which is not flexible and is made of a hard and moderately elastic synthetic resin, but the band constituted only by the metal band is described above in the cord holding member. The force W generated in the cord holding member when such a bending is applied is larger than that in the case of a metal band covered with a flexible cover. A band made of a synthetic resin that is not flexible and hard and has a proper elasticity is more expensive than a metal band.

4. Further, a metal band covered with a flexible cover; a cord holding structure in which a cord connected to the main body is assembled through a cylindrical tube having an inner diameter smaller than the band width, and an elastic tube. Can also be expressed as a code holding structure characterized by using.

In this case, it is possible to obtain the two effects obtained by the cord holding device of the above item 1 and the cord holding device of the above item 2. That is, the manufacturing cost is low, and even if a bending force is applied to the cord in a direction intersecting with the extending direction of the band, the bending force is not concentrated at the contact point with the cord, and the contact point remains even after long-term use. Not only does the cord or itself not break, but the elastic cylindrical tube is made of various elastic materials in various dimensions. The width of the band and the thickness of the cord from various existing tubes. Since the most suitable one is selected and used according to the requirements, it is possible to easily prepare at a low cost, and it is possible to easily cope with changes in the width of the band and the thickness of the cord.

[0023]

As described above in detail, according to the cord holding device of the present invention, the manufacturing cost is low, and even if a bending force is applied to the cord in a direction intersecting the extending direction of the band, the cord holding device contacts the cord. In addition, the bending force is not concentrated, and the cord or the cord itself is not damaged at the contacts even after long-term use.

Further, by using the elastic cylindrical tube as the cord holding member, the width of the band and the thickness of the cord can be changed from various ready-made tubes formed in various dimensions by materials having various elasticity. Since the most suitable one can be selected and used, it is possible to easily prepare at a low cost, and it is possible to easily cope with changes in the width of the band and the thickness of the cord.

Further, by making the hard band a metal band covered with a flexible cover, the above-mentioned force generated in the cord holding member when the cord holding member is subjected to the bending as described above. W is smaller than a band made of metal, and is less expensive than a band made of a synthetic resin that is not flexible and hard and has appropriate elasticity.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an entire binaural earphone to which a cord holding device according to an embodiment of the present invention is applied.

FIG. 2A is a schematic front view showing a main part of a conventional cord holding device, and FIG. 2B is a schematic right side view showing a main part of the conventional cord holding device of FIG. Is.

FIG. 3A is a schematic front view showing a main part of a cord holding device according to an embodiment of the present invention, and FIG. 3B is according to an embodiment of the present invention of FIG. FIG. 3 is a schematic right side view showing a main part of the cord holding device, and (C) shows a main part of the cord holding device according to the embodiment of the present invention shown in (B). It is a schematic right view showing a state.

[Explanation of symbols]

20 ... Band, 22 ... Earphone (electrical device), 24 ... Cord, 26 ... Cord holding member.

Claims (3)

[Claims] 1. A rigid band; a cord connectable to an electric device; a cord holding member which holds the cord on the band and can be gradually moved along the band each time a force from the cord is received. A cord holding device characterized by the above. 2. The cord holding device according to claim 1, wherein the cord holding member is an elastic cylindrical tube. 3. The hard band is a metal band covered with a flexible cover.
The cord holding device described in 1.