JPH0727717Y2 - Handset handset mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Industrial field to which the invention belongs The present invention relates to a mounting structure of a handset using an induction coil for magnetic field output.

(2) Related Art Generally, a handset having a magnetic field output is intended for a hearing aid user, and the magnetic field is output from the earpiece in the same manner as the sound pressure output by the handset.

As shown in FIGS. 4 (a) and 4 (b), a conventional receiver coil mounting structure using an induction coil generally has a receiver 16 mounted on a case 16 around which an induction coil 15 is wound, and a fixing screw 19
Is fixed to the screw boss 12.

However, in such a structure, since it is necessary to provide the screw boss 12 in the handset case 10, the outer dimension of the case 16 mounted in the handset case 10 becomes smaller, and the inner diameter dimension a1 of the induction coil 15 becomes smaller. Become, earpiece
13 had a drawback that the strength of the magnetic field output from No. 13 decreased.

(3) Purpose of the Invention In order to eliminate the above-mentioned drawbacks, the present invention provides a handset receiver mounting structure in which the outer diameter of the case around which the induction coil is wound is increased to increase the magnetic field strength.

(4) Configuration and operation of device In order to achieve this object, the handset receiver mounting structure according to the present invention is a handset receiver mounting structure including an induction coil for magnetic field output, wherein the induction coil is provided on the outer periphery of the mounting case. And the receiver is housed and arranged in a housing space formed between the inner surface side of the mounting case and a protective plate mounted on the mounting case to be integrated with the mounting case. The case is arranged in the upper and lower cases of the handset so that the end of the side of the mounting case around which the induction coil is wound on the earpiece side is extremely close to the reception vent side of the earpiece. A configuration that is fixed and is configured to emit magnetic flux from the induction coil from the earpiece in a state where the magnetic flux density is increased. It has.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 (a), (b) and (c) are a longitudinal sectional view and a lateral sectional view showing an embodiment of the present invention, in which 1 is a handset upper case,
2 is a lower case of the handset, 3 is an earpiece, 3a is an ear vent, 4 is a handset, 5 is an induction coil, 6 is a mounting case for fixing the handset 4 and the induction coil 5, and 6a is an inner surface of the mounting case 6. 6b is the same side surface portion, 6c is the same upper surface portion, 7 is a connector with a connecting wire for sending a signal to the handset 4, 8 is a protective plate for preventing the connector 7 from coming off, and 9 is a screw for fixing the handset 4. .

Here, the present invention, as shown in FIG.
The induction coil 5 is wound around the upper surface of the case 6
Screw the handset 4 and the protective plate 8 connected to the connector 7 to the screw 9
The handset upper and lower cases 1 and 2 and the earpiece 3 are fixed by screwing.

As assembled in this manner, the end portion of the side surface 6b of the mounting case 6 around which the induction coil 5 is wound is fixed so as to be close to the side of the earpiece 3 of the earpiece 3. Therefore, the magnetic flux from the induction coil 5 can be transmitted to the hearing aid of the user who uses the hearing aid with the magnetic field strength (that is, the magnetic flux density) increased.

Further, as a result, the external dimensions of the mounting case 6 are the same as those of the earpiece 3.
In order to increase the inner diameter of the induction coil 5 to approximately the same, the inner diameter a2 of the winding of the induction coil 5 is increased to increase the magnetic field strength.

Further, by disposing the protective plate 8, the connector 7 connected to the handset 4 is prevented from coming off due to mechanical impact such as vibration or dropping.

As a result, the winding inner diameter of the induction coil 5 is about 30 mmφ, which can be increased by 5 mmφ compared to the conventional product of about 25 mmφ, and the magnetic field strength level can be increased by about 2 dB.

FIG. 2 shows a comparison of the magnetic field strength level with the size of the inner diameter of the induction coil winding when the conventional product and the present invention are used. However, the induction coil has the structure shown in FIG. 3, and the wire diameter of the induction coil is 0.1 mmφ, the height dimension H of the portion around which the coil is wound is 5 mm, and the number of turns of the coil is 1500 times.

(5) Effect of the Invention As described above, in the receiver mounting structure of the present invention, the inner diameter of the winding of the induction coil can be increased by increasing the outer dimension of the mounting case around which the induction coil for magnetic field output is wound. Since the number of turns can be increased, the magnetic field strength can be increased. Furthermore, by mounting the induction coil, the handset, and the protective plate for preventing connector disconnection in the same mounting case, the handset can be integrated. It has a practical effect of facilitating the incorporation into.

[Brief description of drawings]

FIG. 1 (a) is a vertical sectional view showing an example of a receiver structure of the present invention,
1 (b) and (c) are transverse cross-sectional views taken along the line BB and CC in FIG. 1 (a), and FIG. 2 shows the relationship between the inner diameter of the induction coil and the magnetic field strength level. 3 and 4 are sectional views showing an example of the induction coil used in the present invention, and FIG. 4 (a).
(B) is a longitudinal sectional view and a transverse sectional view showing a conventional receiver mounting structure using an induction coil. 1 ... Handset upper case, 2 ... Handset lower case, 3 ... Earpiece, 3a ... Earpiece vent, 4 ... Receiver, 5 ... Induction coil, 6 ... Mounting case, 6a ... Mounting case 6 Inner surface of the case, 6b ... Side surface of the mounting case 6, 6c ...
... Top surface of mounting case 6, 7 ... Connector, 8 ... Protective plate, 9 ... Screw, 10 ... Handset case, 11 ... Handset cover, 12 ... Screw boss, 13 ... Earpiece, 14
…… Handset, 15 …… Induction coil, 16 …… Case, 17 ……
Connector with connecting string, 19 ... Fixing screw.

Claims (1)

[Scope of utility model registration request] 1. A receiver mounting structure for a handset including an induction coil for magnetic field output, wherein the induction coil is wound around the outer periphery of the mounting case, and the inner surface of the mounting case and the protection attached to the mounting case are protected. The handset is housed in the housing space formed between the plate and the housing, and is integrated with the mounting case. The mounting cases arranged in the upper and lower cases of the handset have the induction coil on the mounting case. The earpiece side end of the wound side surface is fixed so as to be extremely close to the earpiece vent hole side of the earpiece, so that the magnetic flux from the induction coil is emitted from the earpiece with the magnetic flux density increased. Handset handset mounting structure characterized by being configured.