JP2001212113A - Headphone for auditory inspection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a headphone for auditory inspection which can prevent not only vibration of a receiver on the vibration generation side from being propagated to an opposite side receiver through a head band but also vibration caused by physical motion of an examinee from being transmitted to the receiver. SOLUTION: An air conduction receiver 1 and a bone conduction receiver 2 which are mounted on the head part of an examinee in application to be set at ear parts of the examinee and a head band for mounting the receivers 1 and 2 on the head part of the examinee are interconnected through a vibration absorbing body 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hearing test headphone used in otolaryngological practice.

[0002]

2. Description of the Related Art Hearing test headphones used in otolaryngological practice include air-conducting hearing test headphones equipped with air-conducting handsets on both sides, masking devices equipped with air-conducting handsets on one side and bone-conducting handsets on the other side. There is a bone conduction hearing test headphone, a head pad on one side, and a bone conduction hearing test headphone equipped with a bone conduction receiver on the other.

FIG. 6 is a front view of one example of a conventional hearing test headphone, and shows an example of the above-mentioned masking bone conduction hearing test headphone.

When using the hearing test headphone 150, a headband 130 is worn on the head, the air-conducting handset 110 is on one ear, and the bone-conducting handset 120 is on the rear side of the other ear. (Mastoid). Thus, when the bone conduction handset 120 is vibrated, the bone conduction sound is transmitted to the skull from the mastoid part, and this stimulates the inner ear on the side to which the bone conduction handset 120 is directly applied, so that the sound is recognized as a sound. Has become.

However, in the hearing test headphone 150, a core 131 that provides elastic force for mounting the headband 130 on the head, a support cylinder 133 provided at both ends of the core 131, and the support cylinder 133 are respectively provided. Adjusting shafts 113 and 124 that are inserted so as to be positionable, supporting members 112 and 122 connected to the adjusting shafts 113 and 124,
The receiver main bodies 111 and 121 are supported by 123, and these members are made of a metal or a hard resin material and are connected to each other.
Is transmitted to the other ear via the headband 130, and this may be heard and recognized as air conduction sound, which adversely affects the examination.

FIG. 7 (a) is a front view of another example of conventional headphones for auditory examination, FIG. 7 (b) is a detailed view of a main part, and FIG. 7 (c) is a sectional view of an adjusting plate. This is a solution to the problem of propagation, and is described in Japanese Utility Model Laid-Open No. 1-40986.

[0007] The hearing test headphone 250 includes a bone conduction receiver 220 including an air-conducting receiver 210, a receiver main body 221, a support member 222, and an adjusting plate 223, and a headband 230 for mounting both of them on the head. Become
An adjustment plate 223 that adjustably connects the support member 222 and the headband 230 has a configuration in which a central vibration-damping member 223b is sandwiched between metal members 223a on both sides, and bone conduction vibration of the receiver main body 221 causes head-induced vibration. Band 23
It is difficult to be propagated to zero.

However, although the hearing test headphone 250 has a certain degree of anti-vibration effect, the support member 222 is attached to the metal member 223a outside the adjusting plate 223.
And the headband 230 are in direct contact and connected,
The propagation of bone conduction vibration through the metal member 223a could not be prevented.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is intended to prevent the vibration of a vibration-generating handset from being transmitted to an opposite handset via a headband. It is another object of the present invention to provide a hearing test headphone that can prevent transmission of vibration due to body movement of a subject to a receiver.

[0010]

The headphones for auditory examination according to claim 1 are used by being worn on the head of a subject,
An air-conducting handset, a bone-conducting handset, which is attached to the subject's ear,
A headband connecting portion for attaching these receivers to the subject's head is connected via a vibration absorber.

Here, the vibration absorber may be any one of an air-conducting handset, a bone-conducting handset, an air-conducting hearing tester, and a head pad provided on both sides of the headband, depending on the type of the headphone for hearing test. It may be provided only between the head hand or both. Further, "via a vibration absorber" means that a metal material or a hard resin material that propagates vibration does not directly contact the connecting portion, and the vibration absorber is always interposed therebetween.

In this hearing examination headphone, the air-conducting handset, the bone-conducting handset and the headband are connected via the vibration absorber, so that the vibration generated in the bone-conducting handset is opposed via the headband. It does not propagate to the side or the body motion of the subject does not propagate to the air-conducting handset, and does not adversely affect the hearing test.

According to a second aspect of the present invention, there is provided the hearing test headphone according to the first aspect.
The entirety of the headband or a connection portion with the air conduction handset and the bone conduction handset is covered with a vibration absorber.

In this headphone for hearing examination, as one mode in which a vibration absorber is interposed, the entire headband or the connecting portion to the receiver is covered with the vibration absorber, so that the same effect as in claim 1 is obtained. Can be demonstrated.

According to a third aspect of the present invention, there is provided the hearing test headphone according to the first aspect.
A connection portion of the air-conducting handset or the bone-conducting handset with the headband is covered with a vibration absorber.

According to another aspect of the headphone for hearing examination, as another mode in which a vibration absorber is interposed, a connection portion of the air conduction handset or the bone conduction handset with a headband is covered with the vibration absorber. A similar effect can be exhibited.

[0017]

Embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 (a) is a front view of an example of a hearing test headphone of the present invention, FIG. 1 (b) is a view as viewed from an arrow A of FIG. 1 (a), and FIG. 2 is a connection of the hearing test headphone of FIG. Exploded view of the part,
(B) is a longitudinal sectional view.

The hearing test headphone 5 is a headphone type masking bone conduction hearing tester which is used by being worn on the head of a subject. The air conduction receiver 1 for testing the hearing of air vibrations, Bone conduction handset 2 for examining hearing of guided vibration, headband 3 supporting these handsets 1 and 2, and giving elastic force when the examination device is mounted on the head, headband 3, and bone conduction handset At the time of connection with 2,
The vibration absorber 4 is interposed between the two.

The air-conducting handset 1 has an air-conducting vibrator inside and is used to cover the ears, a support member 12 for rotatably supporting the main body 11 and a support member 12. An adjusting rod 13 is provided. The bone conduction receiver 2 has a bone conduction vibrator, a receiver main body 21 which is used by being applied to a breast projection, support members 22 and 23 for rotatably supporting the receiver main body 21, and an adjusting rod 24 for supporting the support member 23. It has.

The headband 3 is made of a metal having elasticity, and a band body 31 capable of connecting the air-conducting handset 1 and the bone-conducting handset 2 to both ends thereof, and connecting these handsets 1 and 2 to each other. Plate 32 for adjusting, adjusting body 3
3 is provided. The adjusting body 33 is adapted to support the adjusting rod 13 of the air-conducting handset 1 and the adjusting rod 24 of the bone-conducting handset 2 so as to be slidably positioned. The band 3 can be moved in and out, and the positions of the air-conducting handset 1 and the bone-conducting handset 2 can be adjusted according to the subject's head and ears.

In this example, the vibration absorber 4 is composed of two plates 41 and 42 sandwiching one end 31a of the band main body 31 of the headband 3 from the inside and the outside. The plate 32 is sandwiched between the adjusting members 33 from the outside, and these are integrated in a sandwich shape using screws 32a from the plate 32 side.

The plates 41, 4 constituting the vibration absorber 4
The material 2 is preferably a soft, vibration-absorbing rubber, foamable resin or the like.

FIG. 2 illustrates this assembled state in more detail. The plate 42 is provided with a projection 42a made of the same material, and the projection 42a is provided on the end 31a of the band body 31. The screw 32a penetrates the projections 42a of the plates 32, 41 and the plate 42 and reaches a screw hole provided in the adjusting body 33.

In this way, the band body 31 of the headband 3 and the adjustment body 33 supporting the adjustment rod 24 of the bone conduction handset 2 are not directly connected. , Are completely connected via the vibration absorber 4. Therefore, the vibration of the handset main body 21 of the bone conduction handset 2 is effectively cut off, and this vibration does not propagate to the air conduction handset 1 via the headband 3 and adversely affect the hearing test.

FIG. 3 is a front view of another example of the headphone for auditory test according to the present invention. Here, the same reference numerals are given to the same portions as those already described, and the repeated description will be omitted.

Compared to the hearing test headphone 5 of FIG. 1, the hearing test headphones 5A are air conduction test devices, not bone conduction test devices for masking, and one of the air conduction handsets 1 on both sides is used. The difference is that the headband 3 is connected to the headband 3 via the vibration absorber 4.

In this case, the vibration of the air-conducting handset 1R connected to the headband 3 via the vibration absorber 4 is not propagated to the other air-conducting handset 1L, and the body movement of the subject is not affected by the head. It is not transmitted to the air-conducting handset 1R via the band 3, and does not adversely affect the hearing test. In the following, when the same thing is provided on the left and right as used herein, the right thing is indicated by “R” and the left thing is indicated by “L” on the drawing as necessary. To distinguish.

FIGS. 4 (a) and 4 (b) are fragmentary cutaway views of another example of the hearing test headphone of the present invention, and FIG. 4 (c) is a front view of another example of the hearing test headphone of the present invention.

The headphone for auditory test shown in FIG. 4A is characterized in that the headband 3A is obtained by covering the whole of a core metal 31A which is an elastic body with a vibration absorber 43.
Even if the corresponding adjusting body 33A is screwed to the end 31Aa of the headband 3A, as shown, the adjusting body 33A supporting the air-conducting handset 1 and the headband 3A are completely connected. The vibration of the air-conducting handset 1 is connected to the other via the vibration absorber 43,
The body motion of the subject is not transmitted to the air-conducting handset 1 via the headband 3A, and does not adversely affect the hearing test.

The headphone for auditory test shown in FIG. 4B is different from that shown in FIG.
, That is, only the connecting portion 31Ba is covered with the vibration absorber 44. Even in this case, since the propagation of the vibration becomes a problem only in the connecting portion, FIG.
The same effect as that of (a) is exhibited.

FIG. 4 (c) shows a hearing test headphone 5B.
As shown in the partial cross-sectional view, the connecting portion 31Ca of the headband 3C also integrally covers a portion corresponding to the connecting body 33A in FIGS. 4A and 4B with the vibration absorber 45, It is characterized in that a part of 45 also serves as a connecting body. Also in this case, the problem of vibration propagation can be similarly solved, and the cost can be reduced because the connecting body 33A becomes unnecessary.

Further, in the case of the headbands 3A and 3C, the whole of which is covered with the vibration absorber, the feel when handling and wearing the hearing test headphone becomes soft and gives a soft impression to the appearance. Can be.

FIG. 5A is a front view of another example of the hearing test headphone of the present invention, and FIG. 5B is a longitudinal sectional view of a connecting portion.

The headphones 5C for auditory examination are shown in FIG.
As shown in (b), the connection between the handset 2 and the headband 3 is covered with the vibration absorber, but the point to be covered is not the headband 3 but the handset 2 side. In this example, the vibration absorber 46 is interposed at the connection between the adjustment rod 24 and the support member 23, and the problem of vibration can be solved in this manner.

The connecting portion for interposing the vibration absorber is
Not limited to this example, the receiver main body 21, the support members 21, 2
2. The connecting portion between any of the adjusting rods 24 may be used.

[0037]

According to the headphone for hearing examination according to the first aspect, since the air-conducting handset, the bone-conducting handset and the headband are connected via the vibration absorber, the headphone is generated by the bone-conducting handset. The vibration does not propagate to the opposite side via the headband, and the body motion of the subject does not propagate to the air-conducting handset, so that the auditory test is not adversely affected.

According to the second aspect of the present invention, in addition to the effect of the first aspect, as one mode of interposing the vibration absorber, all of the headband or the connecting portion to the receiver is made of the vibration absorber. Since the coating is performed, the same effect as the first aspect is exhibited.

According to the third aspect of the present invention, in addition to the effect of the first aspect, as another mode of interposing a vibration absorber, a connecting portion of the headband of the air-conducting handset or the bone-conducting handset is provided. Since the structure is covered with the vibration absorber, the same effect as in the first aspect is exhibited.

[Brief description of the drawings]

FIG. 1 (a) is a front view of an example of a hearing test headphone of the present invention, and FIG.

FIG. 2 (a) is an exploded view of a connection portion of a hearing test headphone of the present invention, and FIG. 2 (b) is a longitudinal sectional view.

FIG. 3 is a front view of another example of the hearing test headphone of the present invention.

4A and 4B are cutaway views of main parts of another example of the hearing test headphone of the present invention, and FIG. 4C is a front view of another example of the hearing test headphone of the present invention.

5A is a front view of another example of the hearing test headphone of the present invention, and FIG. 5B is a longitudinal sectional view of a connecting portion.

FIG. 6 is a front view of an example of a conventional hearing test headphone.

FIG. 7 (a) is a front view of another example of the conventional hearing test headphones, FIG. 7 (b) is a detailed view of a main part, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air-conducting handset 2 Bone-conducting handset 23, 24 Connecting part 3 Headband 31Ba Connecting part 4 Vibration absorber 5 Headphone for hearing examination

Continued on the front page (72) Inventor Eiki Yoshikawa 680 Higashihama-machi, Fushimi-ku, Kyoto-shi, Kyoto F-term in Morita Manufacturing Co., Ltd. (reference) 4C038 AA00 AB00 5D005 BA00 BA10 BA11

Claims (3)

[Claims] 1. A hearing test headphone to be worn on the subject's head, comprising: an air-conducting handset, a bone-conducting handset, which is mounted on the subject's ear;
A headphone for auditory examination, characterized in that these earpieces are connected via a vibration absorber to a connection part of a headband for mounting the receiver on the head of the subject. 2. The hearing examination headphone according to claim 1, wherein the whole of the headband or a connection part with the air conduction handset and the bone conduction handset is covered with a vibration absorber. headphone. 3. The headphone for hearing examination according to claim 1, wherein a connection part of the air conduction handset or the bone conduction handset with the headband is covered with a vibration absorber.