JPH0724872Y2 - Electro-acoustic transducer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention provides an electroacoustic conversion element inside a housing, and joins the outside of the housing with a band or the like to hold the electroacoustic conversion element in an ear. The present invention relates to a band structure of an electroacoustic transducer of a type in which the band is used by rotating the band under the chin.

[Conventional technology]

The ear-pad type electro-acoustic transducer incorporates a small acoustic conversion means, a so-called transducer, in a housing, and the housing is supported by a supporting means such as a band. Listening, so-called headphone type in which support means is hung on the head, so-called enner-ear type in which a transducer connected by a flexible cable is attached to a recess in the auricle, that is, the concha of the ear. Or a transducer is joined to both ends of a U-shaped or Y-shaped pipe-shaped supporting member in a front view, and the supporting member is inserted into the external auditory meatus or the concha of the ear that is supported by rotating the supporting member below the chin. There are generally three types of stethoscopes that listen to audio information.

Of these, the headphone type is mainly used indoors, the inner ear type is mostly used for small cassette tape recorders, and the stethoscope type is explanations on airplanes and theaters or foreign language speakers. It is often used when interpreting the content of the above in its native language and transmitting it, but since it does not feel pressure on the crown, it is also attracting attention for various audio equipment.

[Problems to be solved by the device]

With the stethoscope-type electroacoustic transducer configured as described above, there is no particular problem with stethoscopes used for medical examinations that are used only during extreme times. When using the instrument, depending on the listening posture, in other words, if you listen while lying down or listening with the cord drawn from the support member pulled, the parallel part of the support member that is joined to the housing There is a case where the connecting portion of the support member that rotates to the side surface or that extends in the parallel portion rotates to the front surface of the face and enters the visual field, which may cause discomfort to the listener.

In addition, since the support member itself is formed of a pipe-shaped rigid body or elastic body, it cannot be made smaller when it is not used even if it is stored when it is not in use. I have to come back and I can't put it together in a compact way.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is to provide an electroacoustic device with a supporting member that does not cause discomfort to a listener and that can be folded into a small size during storage. To provide a converter.

[Means for Solving the Problems]

The above-mentioned object is joined to a housing having an acoustic conversion element housed therein and a joint formed on the outside of the housing, and has a substantially U-shape in a front view, which is composed of two parallel portions and one connecting portion. An electroacoustic transducer that includes a housing support member, and supports the sounding portion of the acoustic conversion element facing the ear portion in a state where the connection portion side of the housing support member is arranged below the chin, This is achieved by providing a rotating means capable of rotating in a direction substantially perpendicular to the line connecting both ears in the middle of the parallel portion.

[Action]

According to the above-mentioned means, when lying down with the electroacoustic transducer attached, the connecting part hits the chest and bends to the front side of the chest, or the parallel part bends around the turning means when lying down and listening. To use. This prevents the connecting part from coming to the front of the face and the parallel part from coming out to the side of the face and entering the visual field of the listener. In addition, when the support member is bent around the rotating means at the time of storage, the size of the support member can be reduced to almost half, so that the storage member can be stored without taking up space.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of essential parts showing one side portion of an electroacoustic transducer according to an embodiment. In the figure, the electroacoustic transducer 1
Is a casing 2 which houses a speaker unit as an acoustic converting means, a pipe-shaped support member 4 joined via a joint 3 outside the casing 2, and a casing 2 passing through the inside of the support member 4. It is basically composed of a cord 5 for signal transmission derived from an internal speaker unit.

The upper end of the support member 4 is joined to the joining portion 3 and is arranged parallel to the side surface of the head, and the lower end of the upper parallel portion 6 is shown in detail in the perspective view of the main part of FIG. An upper end of the lower parallel part 8 is connected to the upper parallel part 6 in parallel with the side surface of the head through a rotary joint mechanism 7 as a rotating means. Below the head,
In other words, it has a connecting portion 9 that connects under the chin. The connecting portion 9 is divided into a left side portion and a right side portion at substantially the center thereof, and the left side portion and the right side portion are joined by a cord lead-out portion 10 having a T-shape in a front view.

The rotary joining mechanism 7 is fitted on the outer periphery of the lower end of the upper parallel portion 6 and is fastened by a screw or the like not shown,
A first pair that supports a pair of parallel first disc pairs 11 so as to face each other.
A second pair of discs 13 fitted to the outer periphery of the upper end of the lower parallel portion 8 and screwed and rotatably mounted on the outer surface of the first pair of discs 11. And a support pipe 14 of An engagement hole 15 is formed in the center of the first disk pair 11, and an engagement special note 16 that engages with the engagement hole 15 is formed on the center inner surface of each disk of the second disk pair 13.
Is projected. A plurality of positioning projections 17 are radially formed on the outer surface of each disk of the first disk pair 11 in the radial direction, and a positioning projection 17 is also formed on the inner surface of each disk of the second disk pair 13 for engagement with the projections 17. Similarly, a plurality of protrusions 18 are radially formed in the radial direction. Further, the cord 5 is led out from the cord lead-out portion of the connecting portion 8 from the upper parallel portion 6 through the first support pipe 12 and the second support pipe 14 through the insides of the lower parallel portion 8.

In the rotary joining mechanism 7 having such a configuration, when the second disk pair 13 of the second support pipe 14 is inserted outside the first disk pair 11 of the first support pipe 12, the second disk pair 13 is inserted. The engagement protrusions 17 of 13 ride on the outer surface of the first disk pair 11, and the engagement protrusions 17 elastically engage with the engagement holes 15 while elastically deforming outward.
Further, the projections 17 and 18 of the first disk pair 11 and the second disk pair 13 are engaged with each other, so that the rotational positions of both can be maintained at a desired angle.

When the electroacoustic transducer is configured as described above, the support member 4
Since the parallel portion 6 can be bent by the rotary joining mechanism 7,
When the electroacoustic transducer 1 is mounted and the connecting portion 9 and the connecting portion 10 of the supporting member 4 become a hindrance, if the rotary joint mechanism 7 is bent to a desired angle, both disc pairs 11 and 12 will be separated. The elastic structure and the engaging projection structure keep the position unless an external force is applied. For this reason, there is no possibility that the posture of the support member 4 will change when it is attached and that there will be inconvenience in use. When the cord 5 is pulled and the supporting member 4 is inclined during listening, the supporting member 4 may be bent so that the supporting member 4 does not obstruct the visual field.

Further, when not in use, if the rotary joint mechanism 7 is bent, the size becomes almost half, and the storage area becomes small. It is also convenient to store and carry. further,
If an equivalent to the rotary joining mechanism 7 is provided in the connecting portion 9 so that the housings 2 can be stacked on each other, the size can be reduced to about 1/4.

Although the rotary joining mechanism 7 exemplifies this mechanism in which the pair of disks is elastically engaged in this embodiment, it is known that it is rotatable and can hold the rotated position. It goes without saying that any of the above mechanisms can be used for the rotating means of this invention. Further, although it can be fixed at an arbitrary angle, this mechanism is not always necessary.

[Effects of the Invention] As is clear from the above description, the present invention is provided with the rotating means which is rotatable in the direction substantially perpendicular to the line connecting both ears in the middle of the parallel portion of the supporting member. According to the electroacoustic transducer, the parallel portion of the supporting member can be bent as necessary, so that the supporting member does not obstruct the visual field. In addition, it can be folded when storing or carrying,
The storability and portability can also be improved.

[Brief description of drawings]

FIG. 1 is a front view of a main part of an electroacoustic transducer according to an embodiment of the present invention, and FIG. 2 is a perspective view of the main part of the rotary joint mechanism. In the drawings, 1 is an electroacoustic transducer, 2 is a housing, 3 is a joint, 4 is a support member, 6 is an upper parallel portion, 7 is a rotary joint mechanism, 8 is a lower parallel portion, 9 is a connecting portion, and 10 is a connecting portion. A cord lead-out portion, 11 is a first disc pair, 12 is a first support pipe, 13 is a second disc pair, 14 is a second support pipe, 15 is an engagement hole, and 16 is an engagement protrusion.

Claims (1)

[Scope of utility model registration request] 1. A U-shape in a front view, which is joined to a casing having an acoustic transducer housed inside and a joint formed on the outside of the casing and is composed of two parallel portions and one connecting portion. In the electroacoustic transducer for supporting a sounding portion of an acoustic conversion element facing an ear portion, in a state in which a box-shaped housing support member is provided, and a connecting member side of the housing support member is arranged under the chin, An electroacoustic transducer characterized in that a rotating means capable of rotating in a direction substantially perpendicular to a line connecting both ears is provided at an intermediate portion of the parallel portion of the support member.