JP2014239361A - Ear hole type hearing aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ear hole type hearing aid, having excellent appearance, having resistance to disconnection and bending, including a durable linear member for taking out.SOLUTION: In an ear hole type hearing aid 1 including a linear member 5 for taking out, an elastic tube 6 is provided at a root part 5a of the linear member 5 for taking out. The elastic tube 6 into which the linear member 5 for taking out of a predetermined length is inserted is inserted into a through-hole 8 of a face plate 3 and protrudes from a surface 3a of the face plate 3 by a length H. The linear member 5 for taking out is bonded to a back surface 3b of the face plate 3 with an elastic adhesive 10.

Description

  The present invention relates to an earpiece type hearing aid provided with a linear member for removal for removing an earpiece type hearing aid attached to the ear canal.

2. Description of the Related Art Conventionally, an earphone type hearing aid attached to an external auditory canal is provided with a linear member for picking out and pulling out or pulling out when attaching to or removing from the external auditory canal. A linear member made of resin such as nylon is used for the linear member for taking out.

Patent Document 1 describes a linear member for taking out excellent in durability against disconnection or bending, in which a plurality of nylon fibers are twisted or the outer peripheral surface thereof is coated.

JP 2009-182917 A

However, since the taking-out linear member is bonded to the face plate or the battery lid, a load is applied to the base portion and the wire is easily disconnected. Moreover, although the linear member for taking out in which several nylon fiber described in patent document 1 was twisted is strong with respect to a disconnection, a stiffness may become weak and it may bend.

  The present invention has been made in view of such problems of the prior art, and the object of the present invention is to provide a linear member for taking out that has good appearance and is durable against disconnection or bending. It is intended to provide an ear ear type hearing aid.

In order to solve the above-mentioned problem, the invention according to claim 1 is an earphone type hearing aid provided with a linear member for extraction, wherein a cord bush is provided at the base of the linear member for extraction.

The cord bush is formed of an elastic tube, and the elastic tube can be inserted into a through-hole formed in the face plate or the battery cover and protrude from the surface of the face plate or the battery cover.

The take-out linear member can be adhered to the face plate or the battery lid with an elastic adhesive.

A taper can be formed on the edge of the through hole on the face plate or the back side of the battery lid.

According to the first aspect of the present invention, it is possible to make it difficult to disconnect the take-out linear member by dispersing the load caused by the bending applied to the base portion of the take-out linear member. Further, it is possible to prevent the base portion of the linear member for extraction from becoming weak and bent.

If the cord bush is formed of an elastic tube, the cord bush is excellent in flexibility and the assembling workability is improved. Also, if the elastic tube is inserted into the through-hole formed in the face plate or battery cover and protrudes from the surface of the face plate or battery cover, the load applied to the root of the linear member for removal is dispersed. Thus, it is possible to make it difficult to disconnect the take-out linear member.

  If the take-out linear member is bonded to the face plate or the battery lid with an elastic adhesive, the flexibility of the base of the take-out linear member even if the adhesive enters between the cord bush and the take-out linear member Can be maintained.

  If a taper is formed on the edge of the through-hole face plate or the battery lid, the end of the cord bush can be prevented from coming out of the through-hole without protruding from the back surface of the face plate or battery lid.

Schematic perspective view of an earpiece type hearing aid according to the present invention Cross section of the main part Schematic perspective view of another embodiment

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the earphone type hearing aid 1 according to the present invention has a main body 4 formed of a resin shell 2 and a face plate 3, and is made of a nylon made substantially perpendicular to the surface 3 a of the face plate 3. A linear member 5 is attached.

An elastic tube (vinyl tube, rubber tube, silicon tube, etc.) 6 as a cord bush is attached to the base portion 5a of the linear member 5 for taking out. A battery lid 7 forms a battery holder.

The length of the taking-out linear member 5 is a length (for example, 7 mm to 8 mm) that can be easily picked by a fingertip during wearing, and is a length that does not get in the way during wearing. Further, a pick part 5b to which beads or the like are attached is formed at the tip of the linear take-out linear member 5 for easy picking. Inside the main body 4, an amplifier or DSP (not shown), a microphone, an earphone, a button battery, and the like are housed.

  As shown in FIG. 2, the elastic tube 6 is inserted into a through hole 8 formed in the face plate 3 and protrudes from the surface 3 a of the face plate 3 by a predetermined length H (for example, 1 mm to 1.5 mm). .

The protruding portion on the surface 3a side of the elastic tube 6 has a substantially cylindrical shape, but may have a substantially conical shape. A taper 9 is formed at the edge of the through hole 8 on the back surface 3 b side of the face plate 3.

A method and procedure for attaching the take-out linear member 5 of the earphone type hearing aid 1 configured as described above to the face plate 3 will be described. First, the elastic tube 6 is inserted into the through hole 8 formed in the face plate 3.

Next, a nylon takeout linear member 5 having a predetermined length is prepared, and this takeout linear member 5 is inserted into the elastic tube 6.

Next, as shown in FIG. 2, the rear end of the take-out linear member 5 is melted to form a lump, and a stopper portion 5 c is formed. The stopper portion 5 c is formed in a size that does not pass through the through hole 8.

The stopper portion 5 c is fitted into the end portion of the elastic tube 6, the end portion of the elastic tube 6 is pushed and spread, and the elastic tube 6 is sandwiched between the stopper portion 5 c and the taper 9 of the face plate 3, thereby making it difficult to remove.

Further, a large stopper portion 5c that contacts the stopper portion 5c and the back surface 3b of the face plate 3 is formed, and the elastic tube 6 is disposed so that the end portion of the elastic tube 6 does not protrude from the back surface 3b of the face plate 3. When the linear member 5 is pulled, the load in the direction in which the stopper portion 5c is pulled out to the elastic tube 6 is not applied.

Further, a washer may be provided between the stopper portion 5 c and the face plate 3. The outer diameter of the washer is sufficiently larger than that of the through-hole 8, and the inner diameter of the washer is smaller than that of the stopper portion 5c.

The stopper portion 5c may be molded integrally with the linear member 5 for taking out. When the take-out linear member 5 is pulled, the stopper portion 5c becomes a means for preventing the take-out linear member 5 from coming off by being hooked directly on the face plate 3 or on the face plate 3 through a washer.

Next, the face plate 3 and the elastic tube 6 are bonded to each other with the elastic adhesive 10 at the tapered portion 9 of the face plate 3. Next, the stopper portion 5 c of the take-out linear member 5 is bonded to the back surface 3 b of the face plate 3 with the elastic adhesive 10. Further, the elastic tube 6 and the take-out linear member 5 may be bonded with an elastic adhesive 10.

The attachment of the elastic tube 6 to the face plate 3 is limited by space because the locking parts cannot be used due to space limitations, and must be fixed by bonding. However, when a general adhesive is used, the elastic tube 6 is cured. It becomes impossible to play a role as a cord bush.

In the present invention, since the elastic adhesive 10 is used, even if the elastic adhesive 10 enters between the elastic tube 6 and the take-out linear member 5, the flexibility of the base portion 5a of the take-out linear member 5 is improved. Can be maintained.

Finally, a knob portion 5b is formed at the tip of the take-out linear member 5 standing on the surface 3a side of the face plate 3.

  In this way, the elastic tube 6 is provided at the base portion 5a of the take-out linear member 5 so as to protrude from the surface 3a of the face plate 3 by a predetermined length H (for example, 1 mm to 1.5 mm). It is possible to prevent disconnection of the linear member 5 and to prevent the stiffness from being weakened by breaking from the base portion 5a of the linear member 5 for extraction.

  Moreover, the linear member 5 for taking out can also be provided in the battery cover 7 which forms a battery holder, as shown in FIG. The method and procedure for attaching the take-out linear member 5 to the battery lid 7 are the same as those for the face plate 3.

In the embodiment of the present invention, a nylon linear member is used as the linear member 5 for taking out. However, a linear member 5 for taking out a plurality of nylon fibers twisted or coated on the outer peripheral surface thereof is also used. Can be applied to.

  According to the present invention, it is possible to provide an earphone type hearing aid provided with a linear member for taking out that has a good appearance and is durable against disconnection or bending from the base.

DESCRIPTION OF SYMBOLS 1 ... Ear hole type hearing aid, 2 ... Shell, 3 ... Face plate, 3a ... Front surface, 3b ... Back surface, 4 ... Main body, 5 ... Extraction linear member, 5a ... Base part, 5b ... Pick part, 5c ... Stopper part , 6 ... elastic tube, 7 ... battery cover, 8 ... through hole, 9 ... taper, 10 ... elastic adhesive.

Claims (4)

An earring type hearing aid provided with a linear member for extraction, wherein a cord bush is provided at a base portion of the linear member for extraction. The earphone type hearing aid according to claim 1, wherein the cord bush is formed of an elastic tube, and the elastic tube is inserted into a through hole formed in the face plate or the battery lid, and protrudes from the surface of the face plate or the battery lid. Ear hole type hearing aid characterized by The earphone type hearing aid according to claim 1 or 2, wherein the take-out linear member is bonded to a face plate or a battery lid by an elastic adhesive. 4. The earphone type hearing aid according to claim 2 or 3, wherein a taper is formed on an edge of the through hole on the back surface side of the face plate or the battery cover.

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