JPH1198599A - Plug coming-off preventing structure of sound hearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably connect a plug to a receptacle by means of the simple configuration of assembling parts by providing a belt which is wound aroung a device body so as to pressurize the plug to the device body. SOLUTION: The plug 4 is provided with the belt 6 to be wound aroung a hearing aid body 1. The belt 6 is integrally formed in a belt shape with the jacket 4a of the plug 4 by a synthetic resin material such as a polyesther, etc., which resists repetitive bending stress. The plug 4 is inserted to the receptacle of the hearing aid body 1, the belt 6 is wound aroung the body 1 after that and a spherical part is fitted to the hole part of the belt 6. Then, the belt 6 is stably wound around the hearing aid body 1. Besides, a recess is provided in the hearing aid body 1 and the protrusion of the belt 6 is engaged with it so that the belt 6 is more surely wound around the hearing aid body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug-out preventing structure for a sound listening device for plugging and unplugging a plug provided in a main body of the device, and more particularly, to a plug-type ear-hearing hearing aid in which a microphone and an earphone are separated from each other. Regarding the structure.

[0002]

2. Description of the Related Art Conventionally, as a structure for preventing a plug from being detached from a cross-type hearing aid, as shown in FIG. 5, a plug 101 provided at an end of a cord 100 for connecting an external earphone to a hearing aid body is used. A small-diameter portion 102a is formed on the pin 102, and a receptacle provided inside the back surface of the hearing aid main body constitutes a receptacle so that the small-diameter portion 102a of the pin 102 is elastically clamped. If the plug 101 is not provided, it is known that the plug 101 does not come out of the receptacle.

[0003]

However, the conventional plug removal prevention structure shown in FIG. 5 has a problem that the processing of the pin 102 and the receptacle becomes complicated and the assembly becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to simplify the structure of an assembly component and to stably connect a plug to a receptacle. It is intended to provide a sound listening device that can be connected.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a sound listening apparatus provided with a receptacle provided on an apparatus main body attached to an auricle and a plug which can be inserted into and removed from the receptacle. A belt is provided which is inserted into the receptacle and wrapped around the apparatus main body to press the plug against the apparatus main body.

Further, the belt may be formed integrally with the outer cover of the plug.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a perspective view of a cross-type ear-hearing hearing aid to which the present invention is applied, FIG. 2 is a perspective view of a belt formed integrally with an outer skin of a plug, and FIGS. 3 and 4 are cross-types to which the present invention is applied. It is a function explanatory view of a plug removal prevention structure of an over-the-ear type hearing aid.

As shown in FIG. 1, a cross-type ear-hearing hearing aid to which the present invention is applied includes a hearing aid main body 1 and a hearing aid main body 1.
And an external earphone 3 connected by a cord 2.

The hearing aid main body 1 and the cord 2 are connected to a receptacle (not shown) provided inside the back surface of the hearing aid main body 1 and a plug 4 provided at one end of the cord 2 so as to be freely inserted and removed. The external earphone 3 and the cord 2 are connected to a receptacle (not shown) provided on the external earphone 3 and a plug 5 provided at the other end of the cord 2 so as to be freely inserted and removed.

[0010] The plug 4 is provided with a belt 6 around which the hearing aid body 1 is wound. The belt 6 is made of a synthetic resin material such as polyester that can withstand repeated bending stress, and is formed in a belt shape integrally with the outer skin 4a of the plug 4, as shown in FIG. Note that the belt 6 may be formed of hard rubber.

A protruding spherical portion 6a is formed at the end of the belt 6, and a hole 6b is formed at the end of the belt 6 on the plug 4 side. The spherical portion 6a is inserted into the hole 6b. With this, the belt 6 can be wound around the hearing aid body 1. Further, a convex portion 6c is formed on the inner side surface of the central portion of the belt 6 so as to engage with the concave portion formed on the hearing aid main body 1 in order to stably wind the belt 6 around the hearing aid main body 1.

In order to stably fit the spherical portion 6a into the hole portion 6b and to remove the spherical portion 6a from the hole portion 6b by an appropriate external force, the maximum outer diameter of the spherical portion 6a is set to the maximum value of the hole portion 6b. It is set slightly larger than the inner diameter.

Further, a projection 6d is provided near the spherical portion 6a in order to easily remove the spherical portion 6a from the hole 6b. If a nail is pressed on the projection 6d and pressed, the spherical portion 6a is easily detached from the hole 6b, and the belt 6 is opened.

As a connector composed of the plug 4 and a receptacle (not shown), for example, a three-terminal connector system model CS43 made by Microtronic of Denmark, which is not provided with a mechanism for preventing disconnection, can be applied.

As shown in FIG. 1, the ear-hearing hearing aid body 1 has a substantially banana shape that can be worn on the upper pinna. Here, the hook 7 is for stably mounting the hearing aid main body 1 on the upper pinna. Reference numeral 8 denotes a volume for switching the hearing aid state, and reference numeral 9 denotes a changeover switch.

In the following, the operation of the plug removal prevention structure of the cross-type ear hearing aid to which the present invention is applied will be described. After inserting the plug 4 into the receptacle of the hearing aid main body 1, as shown in FIG. 3A, the belt 6 is wound around the hearing aid main body 1, and the spherical portion 6 a is inserted into the hole 6 b of the belt 6. Then, the belt 6 can be stably wound around the hearing aid main body 1. Furthermore, since the concave portion 1a is provided in the hearing aid body 1 and the convex portion 6c of the belt 6 is engaged with the concave portion 1a,
The belt 6 can be more securely wound around the hearing aid body 1.

Accordingly, the plug 4 is formed by the outer cover 4a of the plug 4.
The plug 4 is firmly connected to the receptacle by the belt 6 formed integrally with the plug 4, and the plug 4 does not come off the receptacle even if some force acts in the direction in which the plug 4 comes off.

Further, as shown in FIG. 4, a belt 6 integrally formed with the outer skin 4a of the plug 4 winds the hearing aid body 1 at a portion adjacent to the plug 4, thereby connecting the plug 4 to the receptacle. In the vicinity of C, a contact portion 6e that is in close contact with the back surface 1b of the hearing aid main body 1 is formed on the belt 6. The contact portion 6e reduces the load on the connection portion C due to the external force in the direction of the arrow A or the external force in the direction of the arrow B applied to the cord 2 when the hearing aid main body 1 is worn on the pinna.

That is, the external force in the direction of arrow A or the external force in the direction of arrow B acts in the direction in which the back surface 1b is in close contact with the contact portion 6e or in the direction away therefrom.
, The contact between the back surface 1b and the contact portion 6e is maintained, and the connection portion C is stably maintained without the plug 4 separating from the receptacle.

In particular, a hearing aid wearer of an infant often pulls the cord 2 in a direction in which the plug 4 is pulled out. However, even if the cord 4 is handled somewhat abruptly, the electrical contact between the plug 4 and the hearing aid main body 1 is kept stable. It does not degrade the function as a hearing aid.

On the other hand, when the plug 4 is to be removed from the receptacle of the hearing aid main body 1, the protrusion 6d of the belt 6 is pressed with a nail or the like, and the spherical portion 6a is formed into a hole as shown in FIG. The belt 6 is easily released from the belt 6b to be in an open state.
Then, the plug 4 can be removed from the receptacle.

In the above-described embodiment of the present invention, the case where the belt 6 and the outer cover 4a of the plug 4 are integrated has been described. However, if the belt 6 presses the upper part of the plug 4 against the hearing aid main body 1, any structure may be used. The plug 4 and the belt 6 may be separate bodies.

Further, in the above-described embodiment, a case has been described in which the present invention is applied to a cross-type ear-hearing hearing aid. However, the present invention is not limited to this, and can be applied to other sound listening devices as long as it has a shape that fits over the pinna and includes a receptacle and a plug connected to the receptacle. Needless to say.

As this type of sound listening device, a jack for connecting to an audio device such as a television receiver or a radio receiver is provided instead of the external earphone 3 connected to the other end of the cord 2 shown in FIG. It may be something. Of course, it can also be applied to a sound collector.

[0025]

As described above, according to the present invention, the plug and the receptacle provided on the apparatus main body can be stably and reliably connected with a relatively simple structure.

If the outer shell of the plug and the belt are integrally formed, the usability is good and the plug and the receptacle provided on the apparatus main body can be connected stably and reliably.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cross-type over-the-ear hearing aid to which the present invention is applied.

FIG. 2 is a perspective view of a belt formed integrally with an outer shell of a plug.

3A and 3B are explanatory diagrams of the operation of a plug-type disconnection prevention structure of a cross-type ear-hearing hearing aid to which the present invention is applied, wherein FIG. 3A is a cross-sectional view of a state in which a belt is wound around a hearing aid body, and FIG. Sectional view

FIG. 4 is an explanatory view of the operation of the plug removal prevention structure of the cross-type over-the-ear hearing aid to which the present invention is applied.

FIG. 5 is a side view of a plug provided with a conventional plug removal prevention structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hearing aid main body, 2 ... Cord, 3 ... External earphone, 4
... Plug, 4a ... Skin of plug, 6 ... Belt, 6a ... Spherical part, 6b ... Hole part.

Claims (2)

[Claims] In a sound listening device provided with a receptacle mounted on an apparatus main body attached to an auricle and a plug which can be inserted and removed from the receptacle, the plug is inserted into the receptacle and wound around the apparatus main body. A plug removal prevention structure for a sound listening device, wherein a belt for pressing the plug against the device main body is provided. 2. The plug removal prevention structure for a sound listening device according to claim 1, wherein said belt is formed integrally with an outer skin of said plug.