JPH1023599A - Ear-mount hearing aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ear-mount hearing aid which never causes howling. SOLUTION: The ear-mount hearing aid consists of a hearing aid body 1 which is put on behind an earlap, a plug body 2 which is inserted into the ear, and a hanger body 3 which connects the hearing aid main body 1 and plug body 2, and the hearing aid body 1 has an acute-angle edge part 1a which is put between the rear part of the ear and a temporal part; and the hanger body 3 has a core 8 with superelasticity arranged inside to its overall length and one end part 8a of the core 8 is fixed while disabled to rotate on the hearing aid body 1. Consequently, even when the ears are variously different in shape and size for individuals, the hearing aid itself can securely by put on with constant optimum load, so howling due to a failure in inserting the plug body into the ear in contact is not caused and there is not the possibility of pain caused by the hearing aid body or a hanger body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ear-hearing hearing aid.

[0002]

2. Description of the Related Art A conventional hearing aid of this type is, for example, as disclosed in Japanese Utility Model Publication No. Sho 61-23917, which includes a hearing aid main body attached to a rear part of an auricle, a plug inserted into an external ear hole, and It comprises a hearing aid body and a hanger body for connecting the plug. And a metal tube or a resin tube which has elasticity is usually used for the hanger body.

[0003]

However, although the conventional hearing aid uses an elastic metal tube or resin tube for the hanger body, the shape and size of the pinna may vary depending on the individual. Since it is variously different, if the mounting force of the hanger body is insufficient, the plug can not be inserted in close contact with the external ear canal, causing a howling phenomenon, and the hearing aid function will not be sufficiently obtained, or conversely, When the mounting force of the hanger body is too strong, it has often been observed that the hearing aid body and the hanger body suffer pain. Therefore, hearing aids are custom-made according to individual differences, but in this case, the cost of the hearing aid itself rises unnecessarily, so that it was not economical.

[0004]

SUMMARY OF THE INVENTION The present invention has been developed in order to effectively solve the problems of the conventional over-the-ear hearing aids. A hearing aid body to be mounted, a plug inserted into the outer ear canal,
In an ear-hearing hearing aid comprising a hearing aid main body and a hanger body for connecting a plug body, the hearing aid main body has an acute edge which enters between a rear part and a head side part of an auricle, and the hanger body has an ultra-long internal length. A configuration is adopted in which a core wire having elasticity is provided, and one end of the core wire is non-rotatably fixed to the hearing aid body.

[0005] The second aspect of the present invention adopts a configuration based on the first aspect, wherein the plug is rotatably connected to the other end of the superelastic core wire.

According to a third aspect of the present invention, based on the first aspect, the end of the hanger body connected to the stopper is formed in an enlarged shape, and the enlarged end is rotatably fitted to a corresponding portion of the stopper. A configuration is adopted in which a concave hole portion that fits is formed and the plug body and the hanger body are rotatably connected.

According to a fourth aspect of the present invention, based on the first to third aspects, a configuration is employed in which the core wire having superelasticity is a bundle of a plurality of fine wires.

[0008] Therefore, in the present invention, even if the shape and size of the pinna are variously different due to individual differences,
The superelasticity of the sharp edge of the hearing aid body and the core wire disposed inside the hanger body makes it possible to securely mount the hearing aid under a certain optimum load. Therefore, unlike the conventional case, the plug cannot be inserted into the outer ear canal in close contact, causing a howling phenomenon, and the hearing aid function cannot be sufficiently obtained. Is that it is gone.

According to the second and third aspects of the present invention, in addition to the superelastic effect of the core wire, the direction of insertion of the plug into the outer ear hole can be more accurately adjusted, so that more secure adhesion can be achieved. The insertion state can be ensured, and in the invention of claim 4, the superelastic effect of the core wire can be further improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to a preferred embodiment. It comprises a hearing aid main body 1, a plug 2 inserted into the outer ear canal, and a hanger body 3 connecting the hearing aid main body 1 and the plug 2.

The ear-hearing hearing aid according to the first embodiment, as shown in FIG. 1, incorporates all necessary components such as a microphone 4, an amplifier 5, and a speaker 6 connected to the hearing aid main body 1 by a cord 7. However, the features are:
On the front edge 1a side of the hearing aid main body 1, a substantially V-shaped acute angle shape which enters into the recess between the rear part and the head side part of the auricle is positively applied, and a resin connecting the hearing aid main body 1 and the plug 2 is provided. A super-elastic core wire 8 formed into a curved shape along the outer periphery of the pinna is provided by press-fitting or insert molding over the entire internal length of the hanger body 3 formed of a tube. The hanger body 3 has a cavity 9 for transmitting sound.
Are formed continuously.

As the core wire 8 having superelasticity, a single wire or a plurality of fine wires having a round or square cross section, such as a well-known Ni--Ti alloy, which are bundled or twisted with a band, are used. At least one end 8a located on the hearing aid main body 1 side is largely bent in a crank shape as shown in FIG. 2, and the crank-shaped one end 8a is embedded in the upper wall portion of the hearing aid main body 1. The structure is fixed to the hearing aid main body 1 so as not to rotate. However, the one end 8
The shape of a is not limited to this, and may be any of various other bent shapes or flat shapes shown in FIG. 3 as long as it is fixed to the hearing aid main body 1 so as not to rotate. Is also good.

In the drawing, 3b is a core wire 8 of the hanger body 3.
Is provided on one end 8a of the hearing aid and is fixed to the upper wall of the hearing aid body 1 with a hanger body 3 provided on the lower wall thereof.
Is provided with a slit 3c for press-fitting the core wire 8 therein.

For this reason, the core wire 8 itself is connected to the rectangular projection 3b.
One end portion 8a, apart from the fixed state of the
Is projected outward from the rectangular projection 3b and is fixed to the hearing aid main body 1 side. However, since the core wire 8 and the hanger body 3 are not firmly fixed, the press-fitting assemblability is improved. Or, even in the case where the two members 3 and 8 are greatly deformed due to superelasticity, they can slide on a long pipe with a smaller force, so that there is no need to worry about hindering the required bending of the hanger member 3 and the hanger member 3 And the core wire 8 together,
With the same end fixed to the common hearing aid body 1,
There is no deviation or slippage between the two.

The other end 8 of the core 8 located on the side of the plug 2
Regarding b, as shown in the figure, the end 8a is slightly bent without being bent as much as the end 8a, or is simply made straight and fixed to the plug 2 together with the end of the hanger body 3. As shown in FIG. 4, the end 3a of the hanger body 3 connected to the plug 2 is formed into an enlarged spherical shape, and the other end of the core wire 8 is inserted into the enlarged spherical end 3a. 8b, and on the other hand, a concave portion 10 for rotatably fitting the enlarged spherical end portion 3a is formed in a corresponding portion of the plug 2, and the plug 2 including the other end 8b of the core wire 8 is formed. It is also possible to configure so as to be rotatably connected to the hanger body 3.

Therefore, even in the use of the over-the-ear hearing aid according to the first embodiment, basically, similarly to the conventional hearing aid, the hearing aid is provided via the hanger body 3 which also serves as a sound transmission tube. The main body 1 may be hooked on the rear part of the auricle 11 and the plug 2 may be inserted into the outer ear hole 12. In the first embodiment, as described above, the front edge of the hearing aid main body 1 is used. Part 1a
Since the side has an acute angle shape, the hearing aid body 1 is securely fitted to the recess between the pinna 11 and the head side portion 13 as shown in FIG. Never rotate in the direction A in the figure.

In addition, since the core wire 8 having super elasticity is disposed on the entire length of the inside of the hanger body 3, even if the shape and size of the pinna 11 are variously different depending on individual differences, By obtaining a certain optimum load and bending obtained from the superelasticity, the individual difference can be effectively absorbed, and it can be ensured that the plug 2 is inserted into the outer ear hole 12 in close contact. Therefore,
As in the prior art, the mounting force of the hanger body is insufficient, so that the plug 2 cannot be inserted into the outer ear hole 12 in close contact, causing a howling phenomenon, and the hearing aid function cannot be sufficiently obtained. This is because the user's wearing force is too strong, and the user can be less worried about pain.

The fact that one end 8a of the core wire 8 is non-rotatably fixed to the hearing aid main body 1 means that only the hanger body 3 is hooked up on the pinna 11 side or detached from the pinna 11 in the drawing. However, at this time, the hanger body 3 bends freely freely with the super elasticity of the core wire 8 and there is no fear of giving a pain to the user. Since the plug 2 can be reliably inserted and urged into the outer ear hole 12 (direction B in the drawing), this also greatly facilitates the forced insertion of the plug 2 into the outer ear hole 12 in close contact. . Furthermore, even if the hanger body 3 is greatly bent, as long as the hanger body 3 is operated in the super-elastic region, there is no fear that the core wire 8 is permanently deformed, so that the urging force of the plug body 2 against the inside of the outer ear hole 12 is not impaired.

Further, as shown in FIG. 4, under a structure in which the plug 2 is rotatably connected to the other end 8b of the core wire 8 and the hanger body 3, for example, the hanger body 3 may be changed due to individual differences. Even if the range of L and the range of H change due to bending, and the displacement occurs in the insertion biasing direction of the plug 2, the rotation of the plug 2 is obtained and the direction of the plug 2 with respect to the outer ear hole 12 is obtained. In this case, the plug 2 can be inserted into the outer ear canal 12 in an ideal state under any circumstances, which is extremely effective as a measure against the howling phenomenon. .

Next, a description will be given of an over-the-ear type hearing aid according to the second embodiment. As shown in FIG. 6, the hearing aid has a microphone 4 and an amplifier 5 built in a hearing aid main body 1 side and a plug body 2 side. And a speaker 6 is built in, and the speaker 6 and the amplifier 5 are connected via a cord 7 wired inside the hanger body 3. The features are the same as in the first embodiment. In addition, a core wire 8 having super elasticity is disposed on the entire length inside the hanger body 3 made of a resin tube. However, under the second embodiment, the speaker 6 is built in the plug 2 side, and the cavity 2 for transmitting sound is formed inside the hanger body 3 because the plug 2 is an earphone type. Not.

In the second embodiment, though not specifically shown, an acute angle which enters the recess between the rear part of the pinna 11 and the head part 13 is provided on the front edge 1a side of the hearing aid main body 1. While the shape is positively given, at least one end 8 of the core wire 8 is provided.
A large bent shape or a flat shape is provided on the a side, and the one end 8 a is fixed to the hearing aid main body 1 so as not to rotate.

The other end 8b of the core wire 8 is also shown in FIG.
As shown in the figure, the end 3 connected to the stopper 2 of the hanger body 3
a is formed into an enlarged spherical shape, the other linear end portion 8b of the core wire 8 is arranged in the enlarged spherical end portion 3a, and the enlarged spherical end portion 3a is rotatably fitted to a corresponding portion of the plug body 2. If the recess 2 is formed so as to connect the plug 2 to the core wire 8 and the hanger body 3 so as to be rotatable, the range of L and the range of H may also vary depending on individual differences. Even if it does, the directionality of the plug 2 with respect to the outer ear hole 12 can be adjusted accurately.

Therefore, even when the hearing aid according to the second embodiment is used, the front edge 1a of the main body 1 of the hearing aid has an acute angle. In addition to being able to fit and fit in between,
Even if the shape and size of the pinna 11 are variously different, under a certain optimal load and bending obtained from the superelasticity of the core wire 8,
By effectively absorbing the individual differences, it is possible to guarantee that the plug 2 is inserted into the outer ear hole 12 in close contact.

In any of the embodiments, if a bundle of a plurality of fine wires is used as the core wire 8 in a bundle or twist, the superelastic effect is further improved. In this case, As shown in FIG. 8, a sleeve-shaped crimp terminal 14 having a crank shape attached to the end of the core wire 8 composed of the plurality of thin wires is fixed to the hearing aid main body 1 described above so as not to rotate. It is preferable to obtain a bent shape on the one end 8a side of the core wire 8.

[0025]

As described above, according to the present invention, even if the shape and size of the pinna are variously changed due to individual differences, the present invention adopts the above-described structure to realize the sharp edge of the hearing aid main body and the hanger body. Due to the superelasticity of the core wire arranged inside, the hearing aid itself can be securely attached under a certain optimum load, so that the plug cannot be inserted into the outer ear hole closely and the howling phenomenon As a result, the hearing aid function cannot be sufficiently obtained, and the user does not have to worry about suffering pain. Therefore, it is needless to say that the necessity of customization is eliminated, but since the core wire has superelasticity, in addition to the above-mentioned effects, as long as the core wire acts in the superelastic region, there is no fear of permanent deformation. Thus, an economical hearing aid can be provided.

In particular, in the second and third aspects, in addition to the superelastic effect of the core wire, the direction of insertion of the plug into the outer ear hole can be more accurately adjusted, so that a more reliable close insertion state can be achieved. In this case, the superelastic effect of the core wire can be improved.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing an over-the-ear hearing aid according to a first embodiment of the present invention, FIG. 1B is an end view taken along the line AA of FIG. 1A, and FIG. It is a B line end view.

FIG. 2 is a main part perspective view showing the shape of one end of a core wire.

FIGS. 3A to 3D are perspective views of main parts showing another example of the shape of one end of a core wire.

FIG. 4 is a cross-sectional view of a main part showing a structure in which a plug is rotatably connected under the first embodiment.

FIG. 5 is an explanatory diagram showing a state in which the over-the-ear hearing aid according to the first embodiment is mounted.

6A is a cross-sectional view showing an over-the-ear hearing aid according to a second embodiment of the present invention, and FIG. 6B is an end view taken along line CC of FIG. 6A.

FIG. 7 is a sectional view of a main part showing a structure in which a plug is rotatably connected under a second embodiment.

FIG. 8 is an explanatory view of a main part showing a specific example in the case where a core made of a plurality of fine wires is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hearing aid main body 1a Front edge part (sharp edge part) 2 Plug body 3 Hanger body 3a Enlarged spherical end part of hanger body (enlarged shape) 3b Rectangular protrusion 3c Slit 4 Microphone 5 Amplifier 6 Speaker 7 Cord 8 Super elastic core 8a One end of concentric wire 8b The other end of concentric wire 9 Cavity for voice transmission 10 Concave portion 11 Auricle 12 Outer ear hole 13 Head side portion 14 Crimp terminal

Claims (4)

[Claims] 1. A hearing aid body attached to a rear part of an auricle,
In an ear-hearing hearing aid comprising a plug inserted into an external ear canal and a hanger body connecting the plug to the hearing aid main body, the main body of the hearing aid has an acute edge which enters between the rear part of the pinna and the head side part. An ear-hearing hearing aid characterized in that the hanger body is provided with a core wire having super elasticity over its entire length, and one end of the core wire is non-rotatably fixed to the hearing aid body. 2. The hearing aid according to claim 1, wherein the plug is rotatably connected to the other end of the core wire having super elasticity. 3. An end of the hanger body connected to the plug is formed in an enlarged shape, and a concave portion is formed in a corresponding portion of the plug so that the enlarged end is rotatably fitted to the plug. The ear-hearing hearing aid according to claim 1, wherein the hanger body is rotatably connected to the hanger body. 4. The ear-hearing hearing aid according to claim 1, wherein the core wire having superelasticity is a bundle of a plurality of fine wires.