JPH105197A - Receiver for audiometory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a sanitary state of a receiver used by unspecified persons by detachably attaching pad parts which enhance the adhesion with the head part and prevent the outer sound from entering into the ears, to sound insulating cups main bodies in the sound insulating cups added to the receiver for audiometry. SOLUTION: A receiver 1 for audiometry is composed of a pair of left/right sound insulating cups storing air-conduction receivers 2 which make the ears of a testee to listen audiometry inspection sounds, a head band part 4 for connecting a pair of sound insulating cups, etc. The sound insulating cup is composed of a bowl-shaped sound insulating cup main body 6 and an approximately doughnut-shaped pad part 7, and the pad part 7 is detachably attached to the sound insulating cup main body 6. The pad part 7 is formed by integrally sticking an approximately flat and ring pad board 8 and a pad member 9 to each other and engagement projections 10 which are formed on the pad board 8 and projected in such a state as equally dividing its circumference into three are inserted and locked so as to be detachably fixed to mated engagement holes 13 formed in a fitting board 11 of the sound insulating cup main body 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handset for hearing measurement provided with a sound insulating cup used by an unspecified number of people.

[0002]

2. Description of the Related Art A hearing-measuring receiver provided with a sound-insulating cup is widely used for a group examination of hearing, because the hearing can be easily measured without requiring a large-sized sound-insulating room. As described in Japanese Patent Publication No. Hei 6-27126, as a hearing aid receiver having a conventional sound insulating cup, an air-conducting receiver that generates a signal sound is housed in a bowl-shaped sound insulating cup,
It is known that a pad member is attached to the periphery of the opening of the sound insulation cup to increase the degree of close contact with the head and prevent external sounds from entering the ear.

[0003]

However, when a group hearing test is performed using a hearing-measuring receiver having such a sound-insulating cup, the pad member directly touches the skin of the subject. Sebum and dirt around the ears of the patient adhered, and it was uncomfortable for the subject to be examined later, and there was a problem in terms of hygiene. In addition, the pad member is a portion where the contact with the subject is the largest, and has a problem that it is mechanically fragile and easily broken because it has a structure in which the foamed resin is covered with artificial leather.

In order to enable replacement of the pad member, a cover member 101 made of an elastic material is provided on the pad member 100 as shown in FIG. It is known that the pad member 100 can be detachably attached to the sound insulating cup 102 by wearing. However, the cover member 101 is fitted to the opening peripheral portion 103 of the sound insulation cup 102 so that the pad member 100 is attached to the sound insulation cup 10.
2 is not easy due to the relationship between the inner diameter of the cover member 101 and the outer diameter of the sound insulation cup 102, and there is a problem that the usability is not good.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to facilitate replacement of a pad member that directly contacts a subject's head. Another object of the present invention is to provide a hearing-measurement receiver including a sound-insulating cup with good hygiene.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an earphone for measuring hearing provided with a sound-insulating cup, wherein the sound-insulating cup increases the degree of adhesion between a bowl-shaped cup body and a head. And a pad portion for preventing external sounds from entering the ear. The pad portion is detachably attached to the cup body.

The pad portion is provided with an engaging projection, the sound insulating cup body is formed with an engaging hole, and the engaging projection and the engaging hole are engaged to connect the pad portion to the sound insulating cup. It should be attached to the main body.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a perspective view of the earphone for measuring hearing according to the present invention, FIG. 2 is an exploded perspective view of the same main part, FIG. 3 is a bottom view of the pad part, and FIG. 5 is a plan view of a mounting plate of the sound insulating cup, FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5, and FIG. 7 is an operation explanatory diagram showing an engagement relationship between the pad portion and the mounting plate of the sound insulating cup.

[0009] As shown in FIG.
Is composed of a pair of left and right sound-insulating cups 3 accommodating an air-conducting handset 2 that allows a subject to hear a hearing test sound, a headband unit 4 connecting the sound-insulating cups 3 and the like. Reference numeral 5 denotes a grip portion used when attaching and detaching the earpiece measuring receiver 1.

The sound-insulating cup 3 is for enabling an accurate hearing measurement without the test sound emitted from the air-conducting handset 2 being disturbed by environmental noise in an environment where a hearing test room cannot be used. A sound-insulating cup body 6 and a generally donut-shaped pad portion 7 are provided. And as shown in FIG.
The pad 7 is detachably attached to the sound insulation cup main body 6.

As shown in FIGS. 3 and 4, the pad portion 7 comprises a substantially flat and annular pad plate 8 and a pad member 9, which are adhered to each other and are integrated.
A pad member 9 is adhered to one surface 8a of the pad plate 8, and engagement projections 10 are provided on the other surface 8b at positions that are equally divided on the circumference. The pad plate 8 is formed of a synthetic resin, for example, vinyl chloride or the like.
Is formed by covering a foamed resin with artificial leather. Also,
The pad plate 8 and the pad member 9 are bonded by a high-frequency bonding method.

As shown in FIG. 4, the engaging projection 10 is formed in a substantially L-shape, and includes a head 10a and a pillar 10b.
A projection 10c is formed on the head 10a at a position facing the surface 8b of the pad plate 8.

As shown in FIGS. 5 and 6, a substantially flat and annular mounting plate 11 for mounting the pad portion 7 is fixed to the opening edge of the sound insulating cup body 6 with screws (not shown). . Reference numeral 12 denotes a mounting hole for a screw formed in the mounting plate 11. An engagement hole 13 is formed in a portion of the attachment plate 11 facing the engagement projection 10 of the pad plate 8. The mounting plate 11 is formed of a synthetic resin such as polyacetal.

The engaging hole 13 is composed of a wide rectangular hole 13a and a narrow rectangular hole 13b connected thereto.
The wide rectangular hole 13a is formed in such a size that the head 10a of the engaging projection 10 can enter straight in a state where the pad plate 8 and the mounting plate 11 are parallel to each other. The narrow rectangular hole 13b is formed to be larger than the thickness of the pillar 10b of the engaging projection 10. Further, on the back surface of the mounting plate 11, a concave portion 13c is formed at a portion adjacent to the narrow rectangular hole 13b, where the convex portion 10c of the pad plate 8 is engaged.

The earpiece 1 for hearing measurement constructed as described above.
The operation of attaching and detaching the pad section 7 to and from the sound insulating cup body 6 will be described. In order to attach the pad portion 7 to the sound insulation cup main body 6, first, the engaging projection 10 of the pad plate 8 is attached to the mounting plate 11.
The pad portion 7 is positioned so as to face the wide rectangular hole 13a.

Next, the head 10a of the engaging projection 10 is inserted into the wide rectangular hole 1 until the pad plate 8 contacts the mounting plate 11.
7a, the pad portion 7 is rotated clockwise as shown in FIG.
0b is fitted into the narrow rectangular hole 13b. Further, FIG.
As shown in (b), when the protrusion 10c of the pad plate 8 is engaged with the recess 13c of the mounting plate 11 to be in a locked state, the mounting operation is completed.

On the other hand, to remove the pad portion 7 from the sound insulation cup main body 6, the pad portion 7 is rotated counterclockwise to release the engagement relationship between the engagement projection 10 and the engagement hole 13.
As described above, since the pad portion 7 is detachable from the sound insulating cup body 6, the pad portion 7 can be easily replaced.

[0018]

As described above, according to the present invention, it is possible to easily replace a pad member that directly contacts a subject's head, to contribute to improvement in hygiene, and to efficiently perform a group hearing test. can do.

[Brief description of the drawings]

FIG. 1 is a perspective view of a receiver for measuring hearing according to the present invention.

FIG. 2 is an exploded perspective view of a main part of a receiver for measuring hearing according to the present invention.

FIG. 3 is a bottom view of a pad portion.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a plan view of a mounting plate of the sound insulating cup.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is an operation explanatory view showing an engagement relationship between a pad portion and a mounting plate of a sound insulating cup.

FIG. 8 is a partial cross-sectional side view of a conventional earphone for measuring hearing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hearing measurement receiver, 2 ... Air conduction receiver, 3 ... Sound insulation cup, 6 ... Sound insulation cup main body, 7 ... Pad part, 8 ... Pad board, 8a, 8b ... Pad board surface, 9 ... Pad member, 10
··· Engagement projection, 10a ··· head of engagement projection, 10b ··· pillar portion of engagement projection, 10c ··· convex part, 11 ··· mounting plate, 13 ···
Engagement holes, 13a: wide rectangular holes, 13b: narrow rectangular holes, 13c: concave portions.

Claims (2)

[Claims] 1. An audio-visual measuring receiver provided with a sound-insulating cup, wherein the sound-insulating cup comprises a bowl-shaped sound insulating cup body,
An earpiece for hearing measurement, comprising a pad for increasing the degree of close contact with the head and preventing external sounds from entering the ear, wherein the pad is detachably attached to the sound insulating cup body. 2. An engaging projection is formed on the pad portion,
The earpiece for hearing measurement according to claim 1, wherein an engagement hole is formed in the sound insulation cup body, and the pad portion is attached to the sound insulation cup body by engaging the engagement protrusion with the engagement hole.