JPH0339440B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a behind-the-ear hearing aid, and more specifically, it has front and rear portions each having an arcuate curved surface and a cross-sectional shape of approximately The present invention relates to a behind-the-ear hearing aid equipped with a rectangular case.

[Prior art]

3 and 4 show a conventional behind-the-ear hearing aid. In FIG. 3, a case 1 has both side parts 2 and 3 made of parallel planes, a front part 4 and a rear part made of an arcuate curved surface. It is surrounded by a surface portion 5, a flat upper surface portion 6, and a lower surface portion 7, and has a substantially rectangular cross-sectional shape. The upper surface part 6 has a hook 8 formed with a sound path and a sound hole 10 for connecting to a microphone 9.
is provided.

As shown in FIG. 4, the structure of the case 1 consists of case parts 1a and 1b divided into two parts along a plane parallel to both side parts 2 and 3, and both parts are fastened together with screws 11.

The case part 1a includes electric circuits such as an amplifier, a microphone 9, an earphone 12, a switch 13, an adjustment element 14 for volume, sound quality, etc., and a telephone coil 15.
After storing the battery and the like, the case portion 1b is coupled to the case portion 1a. The spiral pipe 16 through which the sound path from the earphone 12 passes has the hook 8 as described above.
is screwed on.

By the way, hearing aids generally have a case structure that can be opened and closed for adjustment, repair, etc. However, with behind-the-ear hearing aids, if sweat or raindrops from the wearer's sweat enter the case, It is necessary to take sealing measures to strictly prevent moisture from entering the case, since the electrical function of the hearing aid will be impaired and the useful life of the hearing aid will be shortened.

However, in the conventional device having the above configuration, even if the gasket is sandwiched between the joint surfaces of the case parts 1a and 1b, the knob 1 of the switch 13 can be opened from this joint.
3a, the operating member 14a of the adjustment element 14, etc. must protrude from the outer surface of the case 1, and the seals for waterproofing applied to these protrusions intersect with the seals of the case, so that a reliable waterproof seal can be provided. The drawback was that it was extremely difficult to do so.

Another disadvantage is that since the case is split into two parts, the microphone, earphones, amplifier, batteries, etc. are all housed in one case part 1a, which makes assembly, adjustment, repair, etc. difficult. It was hot.

[Purpose of the invention]

An object of the present invention is to provide a behind-the-ear hearing aid in which the joint surface of the case and the operating elements protruding outside the case 1 can be reliably sealed waterproof.

Another object of the present invention is to provide a behind-the-ear hearing aid that is extremely easy to assemble and adjust.

[Structure of the invention]

This invention includes a case body forming both side parts, a front part, and a top part, a case lid body forming a rear part and pivoted to the case body so as to be rotatably opened and closed, and a case lid body that can be rotatably opened and closed at the lower end of the case body. To provide a behind-the-ear type hearing aid in which a case is constituted by a battery case that can be coupled with each other, and a reliable waterproof seal can be applied without the packing of the case intersecting with the packing of an operating element or the like.

The present invention also provides a behind-the-ear hearing aid in which a microphone, earphones, and batteries are housed in a case body, and a switch, adjustment means, and electric circuit are attached to a case lid.

〔Example〕

FIGS. 1 and 2 show an embodiment of the present invention, in which a case 21 of a behind-the-ear hearing aid made of synthetic resin molding has two side surfaces 22 and 23 having parallel planes and a front surface having an arcuate curved surface. The case body 21a includes a case body 21a having a portion 24 and an upper surface 26, and a case lid body 21b having a rear surface portion 25 having an arcuate curved surface. The upper end of the case lid 21b is pivotally supported by the case body 21a by a shaft 28, and the case lid 21b can be rotated about the shaft 28 to open and close. Case body 21a
There is a packing groove 2 on the joint surface with the case lid body 21b.
9 is formed, and a packing 30 is attached to the packing groove 29. During normal use, the case lid 21b is fixed to a threaded piece 31 provided on the case body 21a with a screw.

The lower end of the case body 21a is a battery holder 32 including a lower surface 27, and the battery holder 32 is rotatably supported on the case body 21a by a shaft 33, and holds a battery 34 in a removable manner. 35 is a gasket of the battery holder 32.

A microphone 37 and an earphone 38, which are acoustically separated from each other by a partition plate 36, are housed in the upper part of the case body 21a, and a spiral tube 39 having a sound path leading to the earphone 38 protrudes from the upper surface part 26. A hook 40 is threadedly connected to this screw tube 39. Further, a wind cover 41 for preventing wind noise is held between the upper part of the upper surface part 26 and a hook 40. A microphone tube 42 and a waterproof net 43 are inserted between the microphone 37 and the wind cover 41.

A volume adjuster 44 and a switch 45 are attached to the case lid body 21b.
knob 44a and lever 45 of switch 45
Shafts 44b and 45b to which the shafts 44a and 45b are respectively coupled pass through the case lid body 21b, and an O-ring 46 is inserted into the penetrating portion and sliding contact portion.

A semi-fixed adjustment part 4 is provided on the outer surface of the case lid body 21b.
7, and a cover 48 which is pivotally supported by the case lid body 21b and can be rotated to open and close is disposed so as to close the adjustment part 47 via a gasket 49. Further, a printed circuit board 50 for an electric circuit is attached to the lower surface of the case lid 21b.

A fixing lever 51 rotatably supported at the lower end of the case lid 21b is attached to the locking piece 3 of the battery holder 32.
2a and the tip of the cover 48 at the same time to lock the battery holder 32 and the cover 48. Furthermore, a pair of battery contact pieces 52 that come into contact with the battery 34 are provided at the lower end of the case lid 21b.

In addition, in FIG. 1, part of both side surfaces 22 and 23 are also formed on the case lid body 21b;
This can be done as appropriate, taking into account the strength of the case lid body 21b and the fact that the gasket 30 is to be compressed.

Next, the effect will be explained.

In the above configuration, the case 21 is sealed with a waterproof seal by inserting the gasket 30 into the joint surface between the case body 21a and the case lid 21b, and the volume adjuster 44, switch 45, etc. are connected to the case lid 21b. Since the waterproof seal is provided by the O-ring 46 that does not intersect with the packing 30, the waterproof seal can be easily and reliably achieved.

In addition, the microphone 37, earphone 38, and battery 34 are placed on the case body 21a side, and the electrical circuit printed board 50, switch 45, volume adjuster 44, and adjustment section 47 are placed separately on the case lid 21b. Case body 21a and case lid body 21
(b) can be achieved for the first time through a shaft-coupled configuration, which greatly facilitates assembly, adjustment, and repair work.

〔Effect of the invention〕

As is clear from the above explanation, this invention
The case is made up of the case body and the case lid, which is the rear part, and the switch and adjustment means are placed on the case lid, so that the seals of the switches and adjustment means do not intersect with the case seals. A reliable waterproof seal can be easily applied, and the reliability of behind-the-ear hearing aids is significantly improved.

Furthermore, by arranging the components of the hearing aid separately into the case body and the case lid, there is an effect that the workability of assembly, adjustment, repair, etc. can be significantly improved.

[Brief explanation of drawings]

Fig. 1 is a partially see-through exploded perspective view of an embodiment of the present invention, Fig. 2 is a vertical sectional view of the one shown in Fig. 1, Fig. 3 is a side view of the conventional one, and Fig. 4 is the same as that shown in Fig. 3. It is an exploded perspective view. 21...Case, 21a...Case body, 21b...
Case lid body, 22, 23...both side parts, 24...front part, 25...rear part, 26, 27...upper and lower parts, 2
8...shaft, 29...packing groove, 30...packing, 3
1... Screw piece, 32... Battery holder, 37... Microphone, 38... Earphone, 40... Hook, 41... Wind cover, 44... Volume adjuster, 45... Switch, 46... O-ring, 47... Adjustment part, 48 ...Cover, 50...Printed board, 51...Fixing lever.

Claims (1)

[Scope of Claims] 1. A case body integrally formed with both side surfaces that are substantially parallel to each other, a front surface that is an arcuate curved surface, and a top surface, and the case body can be rotated to open and close. a case lid body whose upper end is pivotally supported and a rear face portion formed of an arcuate curved surface; a battery case connected to the lower end portion of the case body so as to be rotatably openable and closable; A behind-the-ear hearing aid. 2. The behind-the-ear hearing aid according to claim 1, comprising a volume adjuster and a switch supported by the case lid. 3. A behind-the-ear hearing aid according to claim 1, comprising a case lid formed by integrally forming a part of both side surfaces. 4. A case body integrally formed with both side surfaces that are substantially parallel to each other, a front surface and a top surface that are arc-shaped curved surfaces, and an arc-shaped case body whose upper end is pivotally supported by the case body so that it can be rotated to open and close. a case consisting of a case lid having a rear surface formed of a curved surface; a battery case coupled to a lower end of the case body so as to be rotatably openable and closable; a microphone, an earphone and A behind-the-ear hearing aid comprising: a battery; a switch attached to the case lid; a volume and sound quality adjusting means; and an electric circuit device.