JP2552766Y2 - headphone - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a headphone having a headphone driver attached to both ends of a band, and more particularly, to a possibility that the headphone may be detached from an ear or shifted from an initial position even when an external impact is applied to the band. Not
In addition, the present invention relates to headphones that minimize noise from a band section.

[0002]

2. Description of the Related Art In a conventional headphone, a housing containing a headphone driver, which is an acoustic transducer, is mounted at both ends of a band, and the band is mounted along an opening of the housing such that the band is supported by the head. An ear pad made of an elastic material is attached to the outer periphery of the ear. On the other hand, since the hair is held down by the band in this way, dissatisfaction such as disturbing the hair style has appeared, and in order to solve this, the underslatch method used by hanging the ear on the ear so that the band comes below the chin Headphones have also been proposed. In this under-headphone system, the ear pads are placed on the outer periphery of the ears, the band that is joined to the housing and extends almost linearly from the support point is turned under the chin, and the ears are sandwiched by the elasticity of the band to hold the housing. It is configured so as to be clamped between both heads. In any of these types of headphones, both ends of the housing for accommodating the headphone driver and the band are integrally joined by directly joining the band to the housing, or are joined by a ball joint method.

Therefore, when a shock is applied to the band portion,
The impact directly acts on the ear and its surroundings, displacing the position of the housing and directly hearing noise such as the impact sound applied to the band, which is uncomfortable. In particular, the latter hanging-type headphones have a drawback that the band is protruded below the chin, so that they are susceptible to external impact. In this regard, for example, Japanese Utility Model Publication No. 58-50702 discloses a headphone in which an elastic body is interposed between a unit case having an electroacoustic transducer and a hanger supporting the unit case. However, since the elastic body of this prior example is a simple sheet, it is effective to some extent against external impact in the thickness direction. That is, there is a problem in that the unit case does not act as a damper against a torsional impact that attempts to rotate the unit case along the temporal region, and the unit case deviates from the initial ear contact position.

[0004] The present invention has been made in view of such a situation of the prior art. The purpose of the invention is to prevent the headphone from coming off the ear or being displaced from the initial position even when a shock is applied to the band portion. It is another object of the present invention to provide a headphone capable of minimizing noise from a band portion.

[0005] In order to achieve the above object, the present invention provides a pair of housings having a built-in headphone driver, and a ring-shaped projection formed along the outer periphery of a surface of the housing facing the ear and formed of an elastic material. In a headphone comprising an ear pad and a U-shaped band connected to the two housings via hangers, and using the band with both heads elastically sandwiched in a state in which the housing is put on the ear with the band, At a position substantially corresponding to the center of gravity of the housing, the housing and the hanger are relatively rotatably and swingably connected to each other with a screw, and a cylindrical elastic member is formed concentrically around the screw. The body is arranged, and each end face of the elastic body is attached to the housing and the hanger, respectively.

[0006]

According to the above construction, a cylindrical elastic body is disposed concentrically around the screw at a position substantially corresponding to the center of gravity of the housing, and each end face of the elastic body is adhered to the housing and the hanger, respectively. As a result, not only the impact in the axial direction applied from the hanger (band) side, but also the torsional impact in the rotational direction about the coaxial line is effectively absorbed, and the restoring force of the two, that is, the housing The relative displacement between the hanger and the hanger is automatically eliminated. In addition, a hanger (band)
Transmission of noise from the side is also suppressed.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In this embodiment, a headphone of a hanging type is taken as an example.

As shown in a front view in which a part of FIG. 1 is cut out, a known headphone driver 2
2 and an ear pad 6 provided along an outer periphery of a surface of the housing 3 facing the ear and formed of an elastic body made of, for example, foamable urethane. As shown in the side view of the main part with the part cut away,
For example, an L-shaped hanger portion 9 joined by a screw 8 with a washer via an elastic body 7 such as urethane, and a band portion 11 integrally extending from an extension end 10 of the hanger portion 9 are provided. And a cord 13 extending from the headphone driver 2 and having at one end a jack 12 for connection to an audio device. In this case, the elastic body 7 is formed in a cylindrical shape having a predetermined axial length, and is arranged concentrically around the screw 8 as shown in FIG. The other end face is attached to the hanger section 9 with a double-sided adhesive tape or the like.
The screw 8 is inserted from the inside of the housing 3 into a stupid hole formed in the housing 3 as a stopper for preventing the washer from coming off. 3 and the hanger part 9 are relatively rotatably and swingably connected.

The hanger portion 9 and the band portion 11 constitute a so-called band 16 of the headphone 1. When the ear pad 6 is worn on the side of the head so that the ear pad 6 can be put on the ear, the supporting force is the elastic force of the band portion 11. Have gained. Hanger part 9
As can be seen from FIG. 2 and FIG. 3 which is a perspective view seen from behind, a first portion 9a formed so as to extend to the rear side of the housing 3 with substantially the same curvature as that of the bowl-shaped housing 3; The first portion 9a is formed integrally with a second portion 9b that extends substantially vertically downward from the first portion 9a. The second portion 9b is configured such that the first portion 9a
Because it is formed so as to wrap around to the back side of
As can be seen from FIGS. 1 and 3, the band portion 11 extends from the first portion 9a so as to be bent in parallel with the surface of the ear pad 6, and the band portion 11 is joined to the second portion 9b.
By connecting the parts, the band part 11 has a U-shape. As a result, the band 11 is located inside the joint 14 of the hanger 9 with the screw 8.

As can be seen from FIG. 2, the first portion 9a of the hanger portion 9 is joined by a screw 8, but the first portion 9a is screwed by interposing an elastic body 7 stuck between the housing 3 and the housing. The ear pad 6 is set so that it can slightly rotate in a direction perpendicular to the axis of the child 8 and can slightly swing with respect to the surface of the ear pad 6. In order to prevent an extreme movement, a projection 15 is protruded from the housing 3 side, and a groove 20 in which the projection 15 is loosely inserted is formed in the first portion 9a of the hanger portion 9, and the rotation range is formed by both. Is set to regulate. The swinging direction is regulated by the contact between the first portion 9a and the outer periphery of the housing 3.

As described above, when the both end surfaces of the elastic body 7 are adhered to the inner surface of the first portion 9a of the hanger portion 9 and the outer surface of the housing 3 by the double-sided tape, the force in the torsional direction with respect to the screw 8 is reduced. Due to the torsional elasticity of the elastic body 7, even if it is twisted, it automatically returns to the initial position as long as it is within the elastic limit, and the force in the bending direction of the screw 8 is applied to the surface of the housing 3 or the first portion 9a. Since the urethane in the direction perpendicular to the direction of compression or expansion automatically returns to the initial position as long as it is within the elastic limit, there is no need to return the headphones to the initial position every time an impact is applied.

Further, since the impact applied to the band portion 11 is damped by the elastic member 7 and transmitted to the housing 3, the noise can be suppressed.

Although the above embodiment has been described with reference to the case where the present invention is applied to a headphone of a hanging type, it is needless to say that the present invention can be applied to a headphone of a type in which a band is supported by a head.

[0014]

As described above, according to the present invention, even if the housing and the hanger portion are relatively displaced (including the displacement due to the torsion) due to the impact, the elastic limit of the cylindrical elastic body is attained. As long as it returns to the initial position as much as possible, there is no need to return to the original position every time a shock occurs, and the shock applied to the band part is damped by the elastic body, so the transmitted noise is minimized. Can be.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a headphone according to an embodiment of the present invention.

FIG. 2 is a side view of a main part of the headphones according to the embodiment, with a portion cut away.

FIG. 3 is a perspective view showing a relationship between a housing and a hanger part of the headphones according to the embodiment.

FIG. 4 is a side view showing a use state of the headphones according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Headphone 2 Headphone driver 3 Housing 6 Ear pad 7 Elastic body 9 Hanger part 11 Band part 14 Joint part 16 Band

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of housings incorporating a headphone driver, an ear pad formed in an annular shape along an outer periphery of a surface of the housing facing an ear, formed of an elastic material, and hangers mounted on the two housings. And a U-shaped band that is connected to the head by using the band, and the band is elastically sandwiched between both heads with the housing being put on the ears. The housing and the hanger are relatively rotatably and swingably connected to each other with a screw, and a cylindrical elastic body is arranged concentrically around the screw. Wherein each end face of the headphone is adhered to the housing and the hanger, respectively.