JP2018182421A - Hearing aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hearing aid having a junction structure of a case that is easy to be assembled and easy to be displaced or deformed even when a user or the like presses with a finger.SOLUTION: A lower case 1 and an upper case 2 have joint portions to be connected to each other. One of joining portions of the lower case 1 and the upper case 2 is an acute angular concave shape and has first inclined side faces 11b and 12b and the other joined portion of the lower case 1 and the upper case 2 is an acute angular convex shape and has second inclined side faces 21b and 22b. The lower case 1 and the upper case 2 are assembled by joining the first inclined side surfaces 11b and 12b and the second inclined side surfaces 21b and 22b, respectively.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a hearing aid.

  The conventional ear-hook type hearing aid has a lower case and an upper case joined together to facilitate assembly, and the lower case and the upper case accommodate amplification circuits, microphones, earphones, batteries, etc. There is one (see, for example, Patent Document 1).

JP 7-203594 A

  FIG. 5 is a cross-sectional view showing an example of the joint portion between the lower case and the upper case of the conventional hearing aid.

  In the hearing aid, when the lower case and the upper case are joined to each other, for example, as shown in FIG. 5A, in order to prevent the lower case and the upper case from shifting in the lateral direction (the width direction of the hearing aid). In one of the lower case 101 and the upper case 102, the locking projection 111 is provided, or as shown in FIG. 5B, the lower case 121 and the upper case 122 are provided with the recess 131 and the other is The ridges 132 may be provided.

  By forming such a joint portion, the lower cases 101 and 121 and the upper cases 102 and 122 are fixed to each other in the lateral direction.

  However, as shown in FIG. 5 (A) and FIG. 5 (B), when the locking ridge 111, the concave stripe 131 and the convex stripe 132 have substantially rectangular cross sections, the lower case 101, 121 and the upper case When assembling the other to 102, 122, the locking ridge 111 is easily hooked to the tip of the other case, and since the ridge 132 is easily hooked to the groove 131, it takes time and effort for assembling work. It takes it.

  In the case where the locking ridges 111 are provided as shown in FIG. 5A, by providing the locking ridges 111 further inside the case, the hooking at the time of assembly is reduced, but after the assembly, the upper case and the lower case are assembled. And there is a possibility that the upper case may be displaced or deformed if a force is applied in the lateral direction of the upper case. Further, in the case of providing the concave streaks 131 as shown in FIG. 5B, it is necessary to increase the thickness of the lower case 121 in terms of strength. When holding the hearing aid shown in Fig. 5 (A) or 5 (B), the lateral side is often pinched by a finger, but when force is applied to the joint by being pushed by the finger, the structural gap It may occur.

  The present invention has been made in view of the above problems, and it is an object of the present invention to obtain a hearing aid having a joint structure of a case which is not easily displaced or deformed even when the user etc. presses with a finger while facilitating the assembling operation. Do.

  The hearing aid according to the present invention has a first case and a second case constituting a housing of the hearing aid. The first case and the second case have joint portions connected to each other. One joint portion of the first case and the second case has a sharp angled groove and has a first inclined side surface, and the other joint portion of the first case and the second case has a sharp angled ridge and a second inclined side surface . The first case and the second case are assembled by joining the first inclined side and the second inclined side to each other.

  According to the present invention, it is possible to obtain a hearing aid having a joint structure of a case which is hard to be displaced or deformed even when the user etc. presses with a finger while facilitating the assembling operation.

FIG. 1 is a perspective view showing a hearing aid according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the hearing aid according to the embodiment of the present invention. FIG. 3 is a cross-sectional view showing an example of a joint portion between lower case 1 and upper case 2 in FIG. 1 and FIG. FIG. 4 is a side view showing the rear end of the lower case 1 and the rear end of the upper case 2 in FIGS. 1 and 2. FIG. 5 is a cross-sectional view showing an example of the joint portion between the lower case and the upper case of the conventional hearing aid.

  Hereinafter, embodiments of the present invention will be described based on the drawings.

  FIG. 1 is a perspective view showing a hearing aid according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the hearing aid according to the embodiment of the present invention.

  The hearing aid shown in FIGS. 1 and 2 is an ear-hook type hearing aid, which comprises a lower case 1 (first case), an upper case 2 (second case), a microphone cover 3, a battery holder 4 and hooks 5. , A spacer 6, a body unit 7, and holding pins 8, 9, 10.

  The lower case 1 and the upper case 2 are members each having, for example, a substantially semi-cylindrical shape, and the two end sides 11 and 12 of the lower case 1 and the two end sides 21 and 22 of the upper case 2 And are formed in the shape which can be joined without gap. That is, by joining the end sides 11 and 12 of the lower case 1 and the end sides 21 and 22 of the upper case 2, the lower case 1 and the upper case 2 become an integral case, and the hollow internal space Main unit 7 is arranged.

  Such a joint portion between the lower case 1 and the upper case 2 is located on the side of the case and not on the upper surface side of the upper case 2, so foreign substances such as sweat do not easily enter the inside of the case via the joint portion. Further, since the boundary between the lower case 1 and the upper case 2 is located on the side of the hearing aid, for example, the lower case 1 and the upper case 2 can be easily made different colors, and the degree of freedom in design is high.

  Further, concave portions 13 and 14 are formed at the upper end of the rear end portion on the battery holder side of the lower case 1, and an insertion hole 15 and a holding pin hole 16 are formed at the front end portion of the lower case 1. There is. Further, holding pin holes 17, 18, 19 and 20 are formed on the side surface of the lower case 1. In the opening on the inner side of the lower case 1 where the holding pin holes 17 and 18 are formed, as shown in FIG. The structure may not have the recess.

  Further, convex portions 23 and 24 are formed at the lower end of the rear end portion on the battery holder side of the upper case 2, and a holding pin hole 25 is formed at the front end portion of the upper case 2. Furthermore, a sound collection port 26 and an insertion hole 27 are formed on the upper surface of the upper case 2. Plate-like protrusions 28 and 29 are respectively formed on the side portions 21 and 22 of the upper case 2, and holding pin holes 30 and 31 are respectively formed on the protrusions 28 and 29.

  The microphone cover 3 is a member that covers at least one (here, both) of the operation unit (operation button or the like) and the sound collection port 26 exposed on the upper case 2. The microphone cover 3 has a shape that matches the upper surface shape of the upper case 2. Further, a holding pin hole 41 is formed in the microphone cover 3.

  The battery holder 4 is disposed at the rear end of the lower case 1 and the upper case 2 and can accommodate a battery that supplies power to the electronic circuit of the main unit 7. In the battery holder 4, a holding pin hole 51 is formed. Specifically, after battery holder 4 is assembled to lower case 1, it can be opened and closed by turning around holding pin hole 51 as a fulcrum, except for the exterior surface, lower case 1 and upper case 2 It can be accommodated in the inner space of the rear end of the

  The hook 5 is a hook for a behind-the-ear hearing aid, and is a member provided with a through hole which is connected at both ends to be a sound path. The protrusion 61 of the hook 5 is inserted into the tip of the lower case 1 and the upper case 2 after assembly. A holding pin groove 62 is formed in the protrusion 61.

  The spacer 6 has a ring shape and is a joining member of the lower case 1 and the tip of the upper case 2. Then, the protrusion 61 of the hook 5 is inserted into the insertion hole 15 of the lower case 1.

  The main unit 7 is incorporated in the internal space between the lower case 1 and the upper case 2 and includes an electronic circuit that performs hearing aid processing in accordance with the hearing aid user, and is a part for realizing the hearing aid function. The main unit 7 includes a frame 71, an earphone joint 72, an earphone module 73, a sound port 74 of a microphone (not shown), an operation button 75, and a holding pin hole 76.

  The holding pin 8 is a pin for fixing the lower case 1, the upper case 2, the microphone cover 3, and the hook 5 to each other. The holding pin 8 is inserted into the holding pin hole 16 of the lower case 1, the holding pin hole 25 of the upper case 2, the holding pin groove 62 of the hook 5, and the holding pin hole 41 of the microphone cover 3.

  The holding pin 9 is a holding pin for fixing the lower case 1, the upper case 2 and the main unit 7 to each other. The holding pin 9 is inserted into the holding pin holes 17 and 18 of the lower case 1, the holding pin hole 76 of the main unit 7, and the holding pin holes 30 and 31 of the upper case 2.

  The holding pin 10 is a holding pin for fixing the lower case 1 and the battery holder 4 to each other. The holding pin 10 is inserted into the holding pin holes 19 and 20 of the lower case 1 and the holding pin hole 51 of the battery holder 4.

  For example, lower case 1, upper case 2, microphone cover 3, battery holder 4, hook 5, spacer 6, frame 71 of main unit 7, and holding pins 8, 9, 10 are resin members made of ABS resin or the like Or it is a member made of metal.

  FIG. 3 is a cross-sectional view showing an example of a joint portion between lower case 1 and upper case 2 in FIG. 1 and FIG.

  The lower case 1 has concaves 11 a and 12 a at the joint portions (ends 11 and 12) with the upper case 2. The upper case 2 has convex streaks 21 a and 22 a at the joint portions (ends 21 and 22) with the lower case 1. The cross sections of the concave streaks 11a and 12a and the convex streaks 21a and 22a have a substantially triangular shape. The concave streaks 11a and 12a may extend from the front end to the rear end of the lower case 1 or may be formed in a part from the front end to the rear end. Similarly, the ridges 21a and 22a may extend from the front end to the rear end of the upper case 2, or may be formed on a part from the front end to the rear end.

  The concave streaks 11a and 12a have inclined side surfaces 11b and 12b. The ridges 21a, 22a have inclined side surfaces 21b, 22b. The inclined side surfaces 11b, 12b, 21b and 22b are, for example, acute angles larger than 0 degrees and smaller than 90 degrees with respect to the assembling direction (that is, the vertical direction) of the lower case 1 and the upper case 2 It is inclined at about 45 degrees). When the lower case 1 and the upper case 2 are assembled to each other, the inclined side 11b and the inclined side 21b are joined to each other, and the inclined side 12b and the inclined side 22b are joined to each other. Side surfaces on the inner side (that is, the inner space side of the lower case 1) of the concave streaks 11a and 12a are inclined side surfaces 11b and 12b, and those on the outer side of the concave streaks 11a and 12a (that is, the internal space of the lower case 1) The side surfaces on the opposite outer world side) are vertical side surfaces 11 c and 12 c (that is, planes parallel to the above-described mounting direction).

  Further, among the two top sides 11d and 11e of the end side 11 formed by the concave streaks 11a, the inside top side 11d is lower than the outside top side 11e. Similarly, among the two top sides 12d and 12e of the end side 12 formed by the concave streaks 12a, the inside top side 12d is lower than the outside top side 12e.

  The inner side surfaces of the ridges 21a and 22a are inclined side surfaces 21b and 22b, and the outer side surfaces of the ridges 21a and 22a are vertical side surfaces 21c and 22c (that is, surfaces parallel to the above-mentioned assembling direction) ).

  The inclination angles from the vertical side surfaces 11c and 12c to the inclined side surfaces 11b and 12b are substantially the same as the inclination angles from the vertical side surfaces 21c and 22c to the inclined side surfaces 21b and 22b.

  Thereby, when assembling the lower case 1 and the upper case 2, the vertical side surfaces 11 c and 12 c of the lower case 1 and the vertical side surfaces 21 c and 22 c of the upper case 2 become guides while in contact with each other. Since the lower case 1 and the upper case 2 are fixed to each other by contacting the inclined side surfaces 21b and 22b of the upper case 2 with each other, the assembly becomes easy, and after the lower case 1 and the upper case 2 are assembled. Less likely to rattle between.

  In this embodiment, the lower case 1 has the grooves 11a and 12a and the upper case 2 has the ridges 21a and 22a. However, the upper case 2 is concave instead of the ridges 21a and 22a. The lower case 1 may have the ridges 21a and 22a instead of the grooves 11a and 12a.

  FIG. 4 is a side view showing the rear end of the lower case 1 and the rear end of the upper case 2 in FIGS. 1 and 2.

  In the lower case 1, concave portions 13 and 14 are formed at the rear end portions on the extension of the concave streaks 11 a and 12 a. The recessed portions 13 and 14 have vertical side surfaces 13a and 14a (that is, planes parallel to the above-described mounting direction). Further, in the upper case 2, convex portions 23 and 24 are formed at the rear end portions on the extension of the convex lines 21 a and 22 a. The convex portions 23 and 24 have vertical side surfaces 23a and 24a (that is, planes parallel to the above-described assembling direction). The outer vertical side surfaces of the concave portions 13 and 14 are formed in the same plane continuous with the outer vertical side surfaces 11 c and 12 c of the concave streaks 11 a and 12 a, respectively. The outer vertical side surfaces of the convex portions 23 and 24 are respectively It forms in the same surface continuous with the perpendicular | vertical side 21c, 22c of the outer side of convex streak 21a, 22a. In addition, the length of these uneven parts (that is, the length in the depth direction of the paper surface in FIG. 4) is about 1 mm, and the length is sufficiently short with respect to the longitudinal length from the front end to the rear end of the hearing aid is there.

  The vertical side surface 13a and the vertical side surface 23a are joined to each other when the lower case 1 and the upper case 2 are assembled to each other, and the vertical side surface 14a and the vertical side surface 24a are joined to each other when the lower case 1 and the upper case 2 are assembled to each other.

  A rear end portion of the lower case 1 is provided with an openable / closable battery holder 4, and when the wearer opens the battery holder 4 for battery replacement, the rear end portion of the lower case 1 in an open state is provided. There is a possibility that a force may be applied to push and spread the rear end portion of the lower case 1 to the outside by touching. On the other hand, since vertical side surfaces 13a and 14a of lower case 1 abut the vertical side surfaces 23a and 24a of upper case 2 after assembling lower case 1 and upper case 2 according to the above configuration, It is difficult for the rear end portion to be pushed apart in the lateral direction (that is, the width direction of the hearing aid which is perpendicular to the above-mentioned assembling direction). Therefore, it is possible to suppress the occurrence of breakage or deformation of the joint portion between the lower case 1 and the upper case 2 due to the rear end portion of the lower case 1 being laterally spread.

  Next, assembly of the hearing aid according to the present embodiment will be described.

  Each member shown in FIG. 2 is prepared, and the main unit 7 is disposed in the inner space of the lower case 1.

  Next, the upper case 2 is assembled to the lower case 1. At that time, as shown in FIG. 3, concave streaks 11 a and 12 a are formed on end sides 11 and 12 of lower case 1, and convex streaks 21 a and 22 a are formed on end sides 21 and 22 of upper case 2. Therefore, for example, by aligning the position of the front end side and the rear end side of the upper case 2 with respect to the lower case 1, the assembly can be easily performed. In addition, as shown in FIG. 4 on the rear end side of the upper case 2, even when the convex portions 23 and 24 of the upper case 2 are formed with the recessed portions 13 and 14 of the lower case 1, confirmation is made in operation. As they are easy and their lengths are short as described above, they can be easily assembled.

  Further, spacers 6 and hooks 5 are disposed in this order at the tip of lower case 1 and upper case 2, and battery holder 4 is disposed at the rear end of lower case 1 and upper case 2. The microphone cover 3 is disposed.

  Then, the holding pin 8 is inserted into the holding pin holes 41, 25, 16 and the holding pin groove 62. Thereby, the lower case 1, the upper case 2, the microphone cover 3 and the hook 5 are fixed to each other by the holding pin 8, and the spacer 6 is sandwiched and fixed between the hook 5 and the lower case 1 and the upper case 2. Be done. Further, the holding pin 9 is inserted into the holding pin holes 18, 31, 76, 30, 17. Thereby, the lower case 1, the upper case 2 and the main unit 7 are fixed to each other by the holding pin 9. Further, the holding pin 10 is inserted into the holding pin holes 20, 51, 19. Thereby, the lower case 1 and the battery holder 4 are fixed to each other by the holding pin 10.

  Thus, the hearing aid according to the present embodiment is assembled from the disassembled state as shown in FIG. 2 to the state shown in FIG.

  As described above, the hearing aid according to the above embodiment includes the lower case 1 and the upper case 2. The lower case 1 has concaves 11a and 12a in the joint portion with the other of the upper case 2, and the upper case 2 has convexes 21a and 22a in the joint with the lower case 1. The concave stripes 11a and 12a have inclined side surfaces 11b and 12b, and the convex stripes 21a and 22a have inclined side surfaces 21b and 22b. The inclined side surfaces 11b and 12b and the inclined side surfaces 21b and 22b are joined to each other when the lower case 1 and the upper case 2 are assembled to each other.

  As a result, a hearing aid having the lower case 1 and the upper case 2 that is easy to assemble can be obtained. That is, since the rattling does not easily occur because the inclined side surfaces 11b and 12b and the inclined side surfaces 21b and 22b join, the rattling of the side portions 11, 12, 21 and 22 of the lower case 1 and the upper case 2 occurs. It can be formed so as to be difficult and easy to assemble. When holding the hearing aid by holding the lateral side between the fingers, even if a force is applied to the joint, a gap is unlikely to occur due to its structure. Furthermore, the concave portions 13 and 14 and the convex portions 23 and 24 are formed at the rear end portions of the lower case 1 and the upper case 2, respectively, so that the battery holder can be spread in the lateral direction even if it is open. It is possible to suppress the occurrence of breakage or deformation of the joint portion between the lower case 1 and the upper case 2.

  Note that various changes and modifications to the above-described embodiment will be apparent to those skilled in the art. Such changes and modifications may be made without departing from the spirit and scope of the subject matter and without diminishing the intended advantages. That is, such changes and modifications are intended to be included in the scope of the claims.

  For example, the hearing aid according to the above-described embodiment is an ear-hook type hearing aid, but may be an ear-type hearing aid having a lower case 1 and an upper case 2.

  The present invention is applicable to, for example, a hearing aid.

1 Lower case (first case)
2 upper case (second case)
Reference Signs List 3 microphone cover 4 battery holder 8 holding pins 11a and 12a concave streaks 11b and 12b inclined side surfaces (an example of a first inclined side surface)
11c, 12c vertical side surfaces 13, 14 recessed portions 13a, 14a vertical side surfaces (an example of a first vertical side surface)
16 Holding pin hole (an example of the first holding pin hole)
21a, 22a convex strip 21b, 22b inclined side surface (an example of the second inclined side surface)
21c, 22c vertical side surfaces 23, 24 convex portions 23a, 24a vertical side surfaces (an example of a second vertical side surface)
25 Holding pin hole (an example of second holding pin hole)
41 Holding pin hole (an example of the third holding pin hole)

The hearing aid according to the present invention has a first case and a second case constituting a housing of the hearing aid. The first case and the second case have joint portions connected to each other. One joint portion of the first case and the second case has a sharp angled groove and has a first inclined side surface, and the other joint portion of the first case and the second case has a sharp angled ridge and a second inclined side surface . The first case and the second case are assembled by joining the first inclined side and the second inclined side to each other. And (a) The first case and the second case have two joint portions respectively connecting the both ends of the first case and the both ends of the second case, and the acute concave recess and one of the two joint portions The acute convex ridge and the acute concave groove and the acute convex ridge at the other of the two joint portions are joined in the same direction, or (b) the rear end of one of the first case and the second case Has a first side surface having the same surface continuous with the outer surface side surface forming the above-mentioned acute angled concave stripe, and a concave portion having a second side surface parallel to the assembly direction and opposed to the first side surface A third side surface having the same surface continuous with the external side surface forming the above-mentioned acute angled ridge at the other rear end of the first case and the second case, and parallel to the assembling direction With a third side and a fourth side opposite the Has a second side and the fourth side, joined together when assembling the first case and the second case to each other.

Claims (4)

A first case and a second case that constitute a housing of the hearing aid;
The first case and the second case have joint portions connected to each other,
One joint portion of the first case and the second case has a first inclined side surface with an acute angled concave line,
The other joint portion of the first case and the second case has a second inclined side surface with an acute angled ridge,
The first case and the second case are assembled by joining the first inclined side and the second inclined side to each other.
A hearing aid characterized by The side surface on the inner space side forming the concave line is the first inclined side surface,
The side surface on the external side that forms the concave line is a surface parallel to the assembly direction,
The side surface on the inner space side forming the convex line is the second inclined side surface,
The side surface on the external side which forms the convex line is a surface parallel to the assembling direction,
The hearing aid according to claim 1, characterized in that   The hearing aid according to claim 1 or 2, wherein the inner top side of the two top sides formed by the concaves is lower than the outer top side. The rear end of one of the first case and the second case is parallel to the mounting direction with a first side surface having the same surface continuous with the external side surface forming the acute angled concave stripe A recess having a first side and a second side opposite to the first side,
At the other rear end of the first case and the second case, a third side surface having the same surface continuous with the outer side surface forming the acute convex ridge and parallel to the assembling direction And a convex portion having a fourth side opposite to the third side,
The second side surface and the fourth side surface are joined to each other when the first case and the second case are assembled to each other,
Hearing aid according to any one of the preceding claims, characterized in that

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