JPS623982Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a headphone, and more particularly, to an improvement in a foldable headphone.

Currently, small portable tape recorders are often used outdoors with a headphone, and for this reason, the headphone is made to be foldable at the band arm (in the direction of arrow A in Figure 1b) to make it easier to carry (Figure 1a, b, c, Figure 1 b, c are the first
A plan view of the part surrounded by the dotted line in Figure B is shown). However, in a headphone that has a signal line inside the band arm that transmits the reproduced signal from one of the speakers of the headphone, if the band arm is made to be foldable as described above, the signal line inside the band arm will bend and break due to repeated stretching. It was dangerous.

This invention solves the above-mentioned drawbacks, and in a headphone that uses a band arm that can be bent from the center, a hollow part is formed inside the band arm and around the rotation axis of the hinge part, and the cord is connected to the band arm. By arranging the cord so as to revolve around the rotating shaft at the hinge portion, the cord is prevented from being bent and damaged at the hinge portion when the band arm is bent and stretched. This provides a new headphone.

This will now be explained in detail with reference to the illustrated embodiment.

In Fig. 2, 1A and 1B are the main parts of stereo left and right headphone, and these main parts are speaker cases 2A and 2B, ear pads 3A and 3B, and sliders 4A and 4 that protrude from the speaker cases 2A and 2B.
It consists of left and right bands 5A and 5B that can be slidably inserted through the arm B (see Fig. 3) with a moderate amount of friction, and a hollow disc sliding type that is disposed at the connecting part of these band arms 5A and 5B. A hinge portion 6 is provided.

That is, as shown in the cross-sectional view of FIG. 4 CC' (dotted chain line CC' in FIG. 3), the hinge part 6 has a lid part 6A provided at the other end of the band 5A and a fitting ring. 7A, and a lid part 6B at the other end of the band 5B.
A fitting ring 7B is provided which fits into the fitting ring 7A, and the fitting ring 7B is inserted into the inner hole 7C of the fitting ring 7A to rotatably fit the lid parts 6A and 6B. Furthermore, the hooked hollow pin 8 and the decorative plate attached pin 9 are configured to prevent the lid parts 6A and 6B from coming apart. A hollow portion 10 is formed along the fitting ring 7A in the hinge portion formed by fitting the lid portions 6A and 6B, and the signal cord 13 passing through the band 5A passes through the hollow portion 10 of the hinge portion 6. It will be extended to band 5B.

Since the headphone of this invention has the above structure, the headphone cord 11 and the plug 12 are connected to each other.
The right channel signal of the stereo left and right playback signals inputted to the headphone main body 1A via the signal code 13 is transmitted to the headphone main body 1B.

That is, the signal cord 13 is extended into the band 5A as shown in FIG. It is wound loosely around the fitting ring 7A within the section 10, and connected to the speaker of the headphone main body 1B via the band 5B. Therefore, even when the headphone is opened or folded, the signal cord 13 within the hinge portion 6 will not bend or twist.

As described above, according to the headphone of the present invention, in a headphone using a band arm that is bent from the center, a hollow part is formed in the band arm and around the rotation axis of the hinge part, and the cord When storing the cord in the band arm, the cord is arranged so as to revolve around the rotation axis at the hinge, so that when the band arm is folded and stretched, the cord does not form an acute angle at the hinge. This has the practical effect that there is no danger of the cord being damaged even by repeated folding operations of the band arm.

[Brief explanation of the drawing]

Figures 1a, b, and c show the prior art. Figure 2~
Figure 5 shows an example of the invention; Figures 2 and 3 are a front view and a side view, respectively;
5 and 5 respectively show cross-sectional views of the main parts. Explanation of symbols, 1A, 1B...headphone main body, 5A, 5C...band arm, 6...hinge section, 6A, 6B...cover section, 7A, 7B...fitting ring, 8...hollow pin with hook , 9...Pin with decorative plate,
10...Hollow part, 13...Signal code.

Claims (1)

[Scope of utility model registration request] In a headphone that is bendable by a sliding and rotating hinge provided at the center of a band arm of the headphone, a hollow portion is formed in the band arm and around a rotating shaft constituting the hinge. , when storing a signal cord that supplies a reproduced signal from an input terminal provided on one speaker to the other speaker within the band arm with the hollow portion, the signal cord is inserted into the circuit at the hinge portion. A headphone arranged to orbit around a moving axis.