JPH0238560Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an in-the-ear hearing aid, and in particular, it includes a hearing aid body that contains an electroacoustic transducer, an amplifier, a battery, etc., and a sound emitting tube that protrudes from the hearing aid body. This invention relates to an in-the-ear hearing aid comprising ear plugs connected to this sound emitting tube.

In-the-ear hearing aids are also referred to as modular hearing aids, and are either equipped with ear plugs in close proximity to the ultra-small hearing aid body, or are earmolds made by molding the shape of each individual's ears. The hearing aid body is press-fitted into a recess formed in the ear shell, and the hearing aid body is held and worn inside the ear shell.

Conventionally, with this type of in-the-ear hearing aid, the sound guide tube protruding from the hearing aid body is formed at a certain angle with respect to the hearing aid body, so that the earplugs do not conform to the curvature of the individual user's ear canal. A situation of non-compliance occurs,
As a result, it had the disadvantage of causing howling due to sound leakage. This is due to the fact that the degree of curvature of the human ear canal varies from person to person. Also, in the case of earmolds, there are individual differences in the relative positional relationship between the concave part of the earmold into which the hearing aid body is press-fitted and the earplug part of the earmold that is inserted into the external auditory canal, so the alignment of the sound emitting tube and the earplug part is difficult. The problem was that it wasn't necessarily appropriate.

Therefore, this invention solves the above-mentioned problems with conventional devices by interposing a connecting member between the sound emitting tube and the earplug to compensate for individual differences in the curvature of the external auditory canal. The purpose is to obtain an in-the-ear hearing aid.

Hereinafter, this invention will be explained with reference to an embodiment shown in Figs. 1 and 2. The electroacoustic transducer, amplifier, battery, etc. are built in and integrated at a certain angle into the hearing aid main body 1 which is attached to the inside of the ear shell. Protruding sound guide path 2a
A substantially spherical coupling recess 2b is formed at the end of the sound emitting tube 2 having a shape. A substantially spherical coupling convex portion 3b is formed at one end of the coupling member 3 having the sound guide path 3a. The coupling convex portion 3b is a portion that is rotatably fitted into the coupling recess 2b. A large diameter portion 3c is formed at the other end of the coupling member 3 so that the earplug 4 can be securely coupled thereto.

With the above configuration, the earplug 4 made of soft synthetic resin is stably held on the coupling member 3, and the earplug 4 made of soft synthetic resin is stably held on the coupling member 3.
Since the sound guide tube 2 and the substantially spherical connecting convex portion 3b are connected to the sound guide tube 2 in a variable angle, the angular relationship of the ear plug 4 to the hearing aid body 1 can be easily adjusted to suit the curvature of the ear canal of the hearing aid user. It can be adjusted to the desired position, and can be worn stably without causing howling due to mismatch between the earplug and the ear canal, which is the case with conventional earplugs.

FIG. 3 shows another embodiment in which an earmold 5 made of soft synthetic resin is combined with the hearing aid main body 1 shown in FIG. , the coupling member 3 is coupled to the earplug portion 5b of the earmold 5. Even in this case, individual differences in the relative angle of the earplug portion 5b with respect to the hearing aid body 1 are compensated for by the angle-variable coupling member 3, so that acoustic coupling in this portion is maintained appropriately. Further, since the soft earmold 5 is secured by the large diameter portion 3c of the coupling member 3, there is an advantage that no coupling means such as screwing the hearing aid body 1 and the earmold 5 is required.

In the above embodiment, the coupling recess 2b and the coupling protrusion 3b
Although it is made into a substantially spherical shape, the same effect can be realized even if one or both of them are formed into a substantially spherical shape as a polyhedron.

As mentioned above, this invention allows the earplug to adapt to the various bends of the ear canal of many hearing aid users through a simple configuration in which a variable-angle coupling member is interposed between the sound guide tube and the earplug. Can be done.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of the main part of one embodiment of this invention, Fig. 2 is a cross-sectional side view of the main part with earplugs attached, and Fig. 3 is a cross-sectional side view of the main part of another embodiment. It is. 1...Hearing aid body, 2...Sound guide tube, 2b...
coupling recess, 3... coupling member, 3b... coupling protrusion,
3c... Large diameter portion, 4... Ear plug, 5... Ear mold, 5a... Recessed portion, 5b... Ear plug portion.

Claims (1)

[Claims for Utility Model Registration] (1) A sound guide tube that is integrally protruded at a certain angle from a hearing aid body to be attached to the inside of the ear shell and has a substantially spherical coupling recess formed at its tip, and the coupling. An in-the-ear hearing aid comprising: a coupling member having a substantially spherical coupling protrusion that fits into a recess formed at one end, and a large diameter section formed at the other end to which a soft ear plug is coupled. (2) The in-the-ear hearing aid according to claim 1, wherein the ear plug is the ear plug part of an earmold.