JPS6143356Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a headphone having a subband slidably provided along the edge of the headband.

This type of headphone, called a sub-band slide type, has headband 1 as shown in Figure 1.
, a pair of sub-bands 2 slidably attached to both ends thereof, and a pair of left and right headphone bodies 4 attached to the tips of the sub-bands 2 via support arms 3. By adjusting the band 2, the attachment position of the headphone body 4 to the headband 1 can be adjusted. That is, as shown in FIGS. 2 and 3, guide grooves 5 having a U-shaped cross section are provided at both ends of the headband 1 along its longitudinal direction.
is formed, and the sub-band 2 is formed in this guide groove 5.
The proximal end of is adapted to be slidably inserted. In this case, a leaf spring 7 having a protrusion 6 is attached to the inside of the sub-band 2, while the inner wall of the guide groove 5 in contact with the leaf spring 7 has a
A plurality of recesses 8 are formed at predetermined intervals, and by sequentially fitting the protrusions 6 of the leaf spring 7 into the recesses 8, the sub-band 2 slides with a click feeling, and It is held in that position.
However, when the headphone main body 4 is attached to the head while adjusting the position via the sub-band 2 as described above, it is preferable that the sliding interval is 5 mm or less. For this reason, in the past, a large number of recesses 8 were provided within the guide groove 5 at intervals of 5 mm or less, but this had drawbacks such as requiring strict dimensional accuracy in mold manufacturing. .

SUMMARY OF THE INVENTION An object of this invention is to provide a headphone in which the slide adjustment of subbands can be made in smaller increments without the above-mentioned production drawbacks.

Hereinafter, embodiments of this invention will be described with reference to the accompanying drawings. In addition, in the figure, the same parts as those described above are given the same reference numerals.

As shown in FIG. 4, the headphone according to this invention has a headband 1 as described above, and guide grooves 5 having a U-shaped cross section are formed along the longitudinal direction at both ends of the headband. The base end of the subband 2 is slidably inserted into the groove 5. A plurality of recesses 8 are formed at predetermined intervals on the inner wall of this guide groove 5, but in this invention, as shown in FIG. A leaf spring 10 with two selectively cooperating projections 9 is mounted. In this case, in this embodiment, the protrusions 9, 9 of the leaf spring 10 are formed with an interval 1.5 times the interval between the recesses 8. Further, a stopper 11 is provided at the lower end of the inner wall of the guide groove 5, and on the other hand, a stopper 12 is provided on the sub-band 2 to engage with the stopper.
is fixed. Although not shown, the opening surface of the guide groove 5 is covered with a cover.

In the above-described configuration, when the sub-band 2 is slid, the protrusions 9, 9 of the leaf spring 10 alternately fit into the recesses 8, so that the sub-band 2
The slide adjustment will be made with a length that is half the distance between the recesses 8.

In addition to the above-described embodiment, as shown in FIG. 6, instead of the above-described leaf spring 10, leaf springs 14, 14 having one protruding portion 13 are installed in parallel and shifted in position. Good too. Further, the number of protrusions of the leaf spring is not limited to two, but three.
More than one may be provided. In that case, if the interval between recesses is X, the interval between protrusions is Y, and the number of protrusions is Z, then the relationship is as follows: Y=X/Z×n (where n is a natural number excluding multiples of Z). By forming
By sliding the sub-band, the respective protrusions can be fitted into the recesses one after another. Furthermore, a leaf spring is installed on the guide groove side,
It can also be modified to form a recess on the subband side.

As is clear from the description of the embodiments described above, according to this invention, the slide adjustment of the sub-band can be made in smaller increments without narrowing the interval between the recesses provided in the groove of the headband, and the mold of the headband can be adjusted in small increments. Manufacturing becomes easier, and management of dimensional accuracy can also be simplified.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a headphone having a subband, Fig. 2 is a longitudinal sectional view showing the subband sliding structure of a conventional headphone, Fig. 3 is a sectional view taken along the - line in Fig. The following figures show an embodiment of this invention: Fig. 4 is a longitudinal sectional view of the sub-band slide part, Fig. 5 is a perspective view of the leaf spring mounting part, and Fig. 6 is a leaf spring mounting in another embodiment. FIG. In the figure, 1 is the headband, 2 is the subband, and 4
1 is a headphone main body, 5 is a guide groove, 8 is a recess, 9 is a protrusion, 10 is a leaf spring, 13 is a protrusion, and 14 is a leaf spring.

Claims (1)

[Claims for Utility Model Registration] (1) A headband having a guide groove formed along the longitudinal direction at one end, a headphone body attached to one end, and the other end slidable into the guide groove. It has an inserted sub-band and a positioning means consisting of a male member and a female member provided between the sub-band and the guide groove, and by sliding the sub-band, the position of the headphone main body can be adjusted. In the headphone, the female member has a plurality of recesses arranged at equal intervals along the sliding direction of the sub-band, and the male member is spring-biased toward the recess. 1. A headphone comprising a plurality of protrusions, the protrusions being arranged at intervals different from the intervals between the respective recesses. (2) In claim 1 of the utility model registration, the interval between each of the recesses is X, and the interval between each of the protrusions is Y.
A headphone characterized in that, where Z is the number of protrusions, the relationship is Y=X/Z×n (where n is a natural number excluding a multiple of Z). (3) The headphone according to claim 1, wherein the protruding portion is made of a bent plate spring.