JP2900120B2 - Ear-hearing hearing aid - Google Patents

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,
In particular, the present invention is suitably applied to a waterproof ear-hearing hearing aid.

[0002]

2. Description of the Related Art Conventionally, in an ear-hearing hearing aid, a waterproof function is realized by increasing the adhesion between respective members. As a waterproof ear-hearing hearing aid, there is a hearing aid 1 as shown in FIG. 5 (Japanese Patent Publication No. 3-39440, Japanese Utility Model Publication No. 3-6075). That is, in the hearing aid 1, a hook 3 is screwed to a distal end portion of a case 2 formed in a bow shape as a whole. The whole is held at the position behind the auricle of the wearer. By attaching a tube and earplugs (not shown) to the end of the hook 3 in this state, the hearing aid obtained from the earphone is transmitted into the ear hole of the wearer through the sound path, the tube and the earplugs in the hook 3. .

The case 2 is composed of a case body 4 and a case lid 5, and the case body 4 contains a microphone, a hearing aid processing circuit, an earphone, and the like. The case lid 5 is rotatably attached to the case main body 4 about a rotation shaft (not shown) provided at a tip end position of the case main body 4. Accordingly, in the hearing aid 1, the case cover 5 is rotated in the direction of arrow a to open the case cover 5, and adjustment and repair of each component incorporated in the case main body 4 are performed.

A battery cover 7 is attached to the base of the case body 4 so as to be rotatable around a rotation shaft 6. Accordingly, in the hearing aid 1, the battery is replaced with the battery cover 7 opened by rotating the battery cover 7 in the direction of arrow b. Also, on the surface of the case lid 5,
A volume knob 8 for volume control and a switch knob 9 for switching power supply and various functions are provided, and these parts are connected to respective switch parts built in the case main body 4 through the thickness of the case lid 5. I have. Further, on the surface of the case lid 5, an adjusting cover 10 for protecting an adjusting portion for adjusting the hearing aid band and the maximum sound pressure level according to the wearer is attached so as to be openable and closable about a rotation shaft 11 as a rotation center. I have.

Here, in the hearing aid 1, the case body 4
By providing seal packing having a shape adapted to each joint surface on the joint surface between the case cover 5 and the joint surface between the case main body 4 and the battery cover 7, it is possible to prevent intrusion of moisture from each joint surface. Has been made. O-rings are provided between the volume knob 8 and the case lid 5 and between the switch knob 9 and the case lid 5, respectively, whereby a gap between the volume knob 8 and the case lid 5 and the switch knob 9 are provided. Water is prevented from entering through a gap with the case lid 5.

A wind cover 12 for preventing wind noise from entering the microphone is provided at the tip end of the case 2. The hook 3 is screwed into the case body 4 while the window cover 12 is fitted in the case 2. It is sandwiched between the hook 3 and the case 2. That is, in the hearing aid 1, an external sound is introduced into the external sound intake of the microphone through a notch (not shown) formed near the hook 3 of the window cover 12.

Here, a suitable waterproof member such as a filter that allows sound to pass through but does not allow water to pass through is provided at the external sound intake of the microphone. The waterproof member prevents water from entering the microphone. It has been done. In this way, in the hearing aid 1, the waterproof seal is provided between the respective members to prevent the intrusion of moisture into the case 2 beforehand.

[0008]

By the way, in the hearing aid 1 having such a configuration, as shown in FIG. 6, the microphone 20 and the earphone 21 are housed inside the distal end of the case main body 4, so that the case lid 5 is The battery cover 7 is separated from the case 2 by two surfaces substantially perpendicular to the rear surface of the case 2 and a curved surface substantially parallel to the rear surface of the case 2. It is designed to form up to the vicinity. That is, the joint portion 22 between the case body 4 and the case lid 5 is formed by surfaces 22A and 22B substantially perpendicular to the back surface of the case 2 and a curved surface 22C substantially parallel to the back surface of the case 2.

As a result, as shown in FIG. 7, the seal packing 23 inserted in the joint portion 22 between the case body 4 and the case lid 5 is provided at the peripheral end surface of the opening 24 formed on the back surface of the case body 4. Corresponding to the shape of the curved portions 23A,
3B and first and second bent portions 23C and 23D formed at both ends of the curved portions 23A and 23B.

In the hearing aid 1, the seal packing 23 is fitted into the groove 25 formed on the peripheral end surface of the opening 24 of the case body 4, and then the case cover 5 is attached to the case body 4.
By screwing and fixing to a fixing bracket 26 provided inside, the whole is assembled as shown in FIG.
In this way, the hearing aid 1 seals the joint 22 between the case body 4 and the case lid 5 with the seal packing 23 so that moisture does not enter the case 2 from the joint 22. .

However, in the hearing aid 1 having such a configuration, when the case lid 5 is closed, there is a problem that the stress applied to the seal packing 23 inserted into the joint portion 22 is biased. That is, the case lid 5 and the case main body 4 are applied so that stress is applied to the case main body 4 substantially vertically from the case lid 5 side.
And the curved portions 23A and 23B of the seal packing 23 can be sufficiently stressed, but the stress is not sufficiently applied to the bent portions 23C and 23D of the seal packing 23. There was. As a result, the hearing aid 1 has a joint 2 between the case body 4 and the case lid 5.
2A, 22A, 22B that are substantially perpendicular to the back of case 2
Cannot be reliably sealed, and there is still insufficient water-proof hearing aid.

In addition, since the hearing aid 1 has a structure in which both ends of the seal packing 23 are bent, the assembling work is difficult, and the seal packing 23 itself is difficult to form.

The present invention has been made in view of the above points, and an object of the present invention is to propose an ear-hearing hearing aid that can further improve waterproofness.

[0014]

In order to solve the above-mentioned problems, the present invention comprises first and second case halves 40 and 41, and the first and second case halves 40 and 41 are joined together. An arc-shaped case 31 in which the portion 70 is formed substantially in a plane over substantially the entire surface; a waterproof member 44 made of an elastic material inserted into the joint portion 70 of the first and second case halves 40 and 41; Opening and closing support means for supporting the one end of the second case half 41 in the first case half 40 so as to be openable and closable, and connecting the second case half 41 to be closed to the first case via a waterproof member 44. The other end of the second case half 41 is pressed against the half 40 by the first case half 4.
And a fixing means for releasing the fixing and opening the second case half 41.

[0015]

[0016]

[0017]

One end of the second case half 41 is openably and closably supported on the first case half 40 by the opening and closing support means, and the second case half 41, which is closed by the fixing means, is sealed by the waterproof member 44. The other end of the second case half 41 is fixed to the first case half 40 by being pressed against the first case half 40 through the second case half 41. In the closed state, the waterproof member 44 is tightly attached to the joint 70 between the first case half 40 and the second case half 41 by applying stress without bias and crushing it.
The joint 70 can be reliably sealed over the entire area.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

(1) Overall Configuration of Hearing Aid In FIGS. 1 and 2, reference numeral 30 denotes a waterproof ear-hearing hearing aid as a whole, and a box-shaped case 31 made of a synthetic resin material is provided behind a pinna. The window cover 32 and the hook 33 are integrally attached to the tip of the bow shape so as to conform to the external shape of.

As is apparent from FIG. 2, the case 31 forms an inner peripheral portion and a root portion of the case 31, and one end of the case 31 is rotatable at a tip end of the case body 40. A case cover 41 that forms the outer periphery of the case 31 that is pivotally supported, and a battery cover 42 that closes a battery chamber 40 </ b> A in a cylindrical space formed at the base of the case body 40, are provided inside the case body 40. The other end of the case cover 41 is screwed and fixed to one end of the protruding electrode 43, and the battery cover 42 is screwed into the case body 40 to be assembled, as shown in FIG.

In this case, the case body 40 and the case lid 4
A seal packing 44 made of an elastic material (for example, a rubber material) is interposed between the casing body 4 and the case body 4.
Water is prevented from entering the case 31 from the gap between the case 0 and the case lid 41. Similarly, an O-ring 45 made of an elastic material (for example, a rubber material) is inserted between the case body 40 and the battery cover 42, so that a gap between the case body 40 and the battery cover 42 enters the case 31. It is designed to prevent water from entering.

2, the battery cover 42 has a pair of arc-shaped battery holding walls 42A and 42B protruding from the inner surface thereof.
The battery can be held inside a space surrounded by 42B (hereinafter, this space is referred to as a battery holding space). Thus, in the hearing aid 30, the battery cover 42
After the battery is fitted into the battery holding space, the battery can be loaded into the battery chamber 40A by attaching the battery cover 42 to the case main body 40, and thus the signal housed inside the case 31 The power can be supplied to the processing unit 50.

As shown in FIG. 2, the signal processing section 50 is formed by integrally attaching a gain adjuster 52, a mode switching switch 53 and an adjusting trimmer 54 to a flexible board 51 on which a hearing aid processing circuit is formed. By operating the gain adjuster 52, the mode switching switch 53, and the adjustment trimmer 54, the audio signal supplied from the microphone 60 or the induction coil (not shown) is subjected to hearing aid processing according to the set input / output characteristics, and then to the earphone. 62.

In this case, through the thickness of the case cover 41, the gain knob 52 and the mode switching switch 53 are provided with a volume knob 63 and a switch provided on the outer peripheral surface of the case 31 which is a curved surface of the case cover 41. Knob 6
4 and is highly waterproof. Thus, in the hearing aid 30, the sound pressure level of the hearing aid output from the earphone 62 can be adjusted by rotating the volume knob 63, and the power supply can be adjusted by operating the switch knob 64. Or switch the mode.

The adjusting trimmer 54 is exposed to the outside of the case 31 through a trimmer opening (not shown) formed on the outer peripheral surface of the case 31. For this reason, the adjuster cover 65 is attached to the outer peripheral surface of the case 31 so as to cover the adjusting trimmer 54 so as to be openable and closable, thereby preventing the adjusting trimmer 54 from being carelessly operated. It has been made like that. Further, the induction coil is disposed inside the flexible substrate 51 bent in a cylindrical shape, so that the space inside the case 31 can be effectively used.

The microphone 60 is attached to a tip inside the case cover 41. A waterproof member (not shown) is attached to the tip of the case lid 41 so that water can be prevented from entering the inside of the case 31 through the tip of the case lid 41. Has been made. The earphone 62 is disposed at the tip inside the case main body 40, so that a hearing aid sound based on the output of the hearing aid processing circuit of the signal processing unit 50 can be output to the outside of the hearing aid 30 via the hook 33. ing.

(2) Configuration of Case In the case of this embodiment, as shown in FIG. 3, the microphone 60 located at the front end of the case 31 is housed in a case lid 41 unlike the conventional case. On the other hand, case 31
The earphone 62 located at the tip side of the case is housed in the case body 40 as in the conventional case. By housing the microphone 60 in the case cover 41 in this manner, the case cover 41 connects the middle of the front end surface of the case 31 (that is, between the microphone 60 and the earphone 62) to the rear end of the back of the case 31. The case 31 is divided by a plane from the box-shaped case 31 to form the entire back surface of the case 31.

Thus, in the hearing aid 30, the case lid 4
When the device 1 is opened, the components such as the microphone 60 and the earphone 62 disposed in the case 31 are exposed, and maintenance work such as component replacement can be easily performed.
Also, in the hearing aid 30, by dividing the case 31 in this way, a joint 70 between the case body 40 and the case lid 41 is formed almost entirely over a substantially flat surface, and inserted into the joint 70. The stress can be applied to the sealing packing 44 without bias.

Thus, the case body 40 and the case lid 4
1 and a seal packing 44 interposed at the joint portion 70
4 corresponds to the shape of the peripheral end surface of the opening 71 formed on the back surface of the case main body 40 and has no bent portion in the joining direction of the case main body 40 and the case lid 41 (that is, is flat, as shown in FIG. 4). A) An approximately rectangular shape is sufficient. Incidentally, in the hearing aid 30, the joint 70 is slightly curved to be precise, but is formed by a substantially flat surface.
Moreover, since the seal packing 44 is formed of an elastic material such as a rubber material, it is possible to use the seal packing 44 having a substantially rectangular shape formed by one plane.

After the seal packing 44 is fitted into the groove 72 formed in the peripheral end face of the opening 71 of the case body 40, the hearing aid 30 is screwed and fixed to the case cover 41 and the case body 40. Thereby, as a whole, as shown in FIG. 1, the joint 70 between the case body 40 and the case lid 41 can be sealed without a gap over the entire area.

(3) Operation of Embodiment In the above configuration, the earphone 62 is housed in the case body 40 and the microphone 60 is housed in the case lid 41, so that the middle of the front end surface of the case 31 A substantially flat surface connecting the rear end of the back of the case 31
Can be divided. Thereby, in the hearing aid 30,
The joint 70 between the case body 40 and the case lid 41 can be formed substantially in a plane.

Accordingly, the case body 40 and the case lid 4
In the hearing aid 30 assembled by inserting the seal packing 44 into the joint 70 with the seal member 1, stress can be applied to the seal packing 44 without bias, and thus the joint 70 is securely sealed over the entire area. be able to.

In the hearing aid 30, the joint 70 between the case body 40 and the case lid 41 is made substantially flat, so that the seal packing 44 inserted in the joint 70 is provided.
Can have a simple structure with no bent portion in the joining direction.

Further, in the hearing aid 30, the case cover 41 forms the entire back surface of the case 31, so that the microphone 60 and the earphone 62 disposed in the case 31 when the case cover 41 is opened. Each component such as is exposed, and maintenance work such as component replacement can be further facilitated as compared with the conventional configuration.

(4) Effects of the Embodiment According to the above configuration, the earphone 62 is housed in the case body 40 and the microphone 60 is housed in the case cover 41, so that the case body 40 and the case cover 41 The joint 70 can be made substantially flat over substantially the entire surface, so that stress can be applied to the seal packing 44 inserted in the joint 70 without bias. Therefore, in the hearing aid 30, the joint 70 can be securely sealed over the entire area, and thus the waterproofness can be further improved.

Further, since the joint 70 between the case body 40 and the case lid 41 is made substantially flat over substantially the entire surface, the seal packing 44 inserted in the joint 70 is provided.
Can have a simple structure. Therefore, in the hearing aid 30, the assembling work can be facilitated, and the molding of the seal packing 44 itself can be facilitated.

(5) Other Embodiments In the above-described embodiment, the case where the microphone 60 is provided on the case cover 41 and the earphone 62 is provided on the case main body 40 has been described. However, the same effect as in the above case can be obtained when the microphone is provided on the case body and the earphone is provided on the case lid.

[0038]

As described above, according to the present invention, one end of the second case half is openably and closably supported on the first case half by the opening and closing support means, and is closed by the fixing means.
The second half of the second case is fixed to the first half of the case by pressing the half of the case to the first half of the case via the waterproof member.
In the closed state of the case half, the waterproof member is pressed against the joint between the first case half and the second case half by applying stress evenly to the joint and crushed, and the joint is formed over the entire area. Thus, it is possible to realize an ear-hearing hearing aid that can be securely sealed and thus can further improve waterproofness.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of an ear-hearing hearing aid according to one embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the internal configuration of the ear-hearing hearing aid.

FIG. 3 is a cross-sectional view showing a joint between a case body and a case cover of the ear-hearing hearing aid.

FIG. 4 is an exploded perspective view showing a seal packing inserted into the joint.

FIG. 5 is a perspective view showing the overall configuration of a conventional ear-hearing hearing aid.

FIG. 6 is a cross-sectional view showing a joint between a case body and a case lid of the ear-hook type hearing aid.

FIG. 7 is an exploded perspective view showing seal packing inserted into the joint.

[Explanation of symbols]

1, 30 ... ear-hearing hearing aid, 2, 31 ... case,
4, 40 ... case body, 5, 41 ... case lid, 2
2, 70 ... joint, 23, 44 ... seal packing, 26 ... fixing bracket.

Claims (1)

(57) [Claims] A first case half and a second case half;
The joint between the first and second case halves extends over almost the entire surface.
An arc-shaped case formed on a substantially flat surface, and inserted into the joint portion of the first and second case halves;
A waterproof member made of an elastic material , and one end of the second case half on the first case half.
Opening and closing support means for supporting the opening and closing freely, and the second case half which closes through the waterproof member.
And press it against the first case half.
Fix the other end of the second case half to the first case half
And at the same time, release the fixation to remove the second case half.
Ear, characterized in that it comprises a fixing means for the opening operation
Hanging hearing aid.