JPH0224311Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an electroacoustic transducer used in portable radios and portable cassette tape recorders.

[Conventional technology]

Light and small earphones are generally known as electroacoustic transducers used in portable radios and portable cassette tape recorders. Earphones have an outer casing that houses an electroacoustic transducer consisting of a diaphragm, a magnetic circuit, etc., and an auricle insertion section that has a sound path. It is attached to the auricle.

The applicant of the present application has previously proposed an improved pinna-insertion earphone disclosed in Japanese Patent Application Laid-open No. 766993/1983. This earphone is formed so that a cord holding portion for holding an external connection cord extends from an outer casing in which an electroacoustic transducer is built-in. When the outer casing is fitted into the concha cavity, which is a part of the auricle, at least two points on the outer circumferential surface of the outer casing are supported by the tragus and antitragus, which are part of the auricle, and the cord holding part is It is configured to abut at least one point on the outer surface of the earlobe. For this reason,
When the outer casing is fitted into the concha cavity, it is supported at three points as described above and attached to the auricle.

In addition, as another example of conventional earphones,
There is one shown in Publication No. 40-6643. this is,
These earlobe suspension type earphones have a clip mechanism formed on the front surface of the outer casing, which has a sound emitting hole in the outer casing that contains an electroacoustic transducer. It is attached to the earlobe in a suspended state.

In these various electroacoustic transducers, in order to protect the electroacoustic transducer element from earwax, iron powder, dust, etc. without impairing the acoustic characteristics as much as possible, some kind of protective structure is provided on the front surface of the outer casing that has the sound emission hole. It is being For example, as shown in Japanese Unexamined Patent Publication No. 57-76994, a part of the outer casing is covered with a plate-like member in which a large number of microholes are formed by a processing method such as electroforming or etching.

In addition, storage cases and the like are used to conveniently carry these electroacoustic transducers. For example, the one shown in Japanese Utility Model Application Publication No. 58-40992 is known. This is a pen-shaped cylindrical case consisting of a cap portion with a clip mechanism and a case body, in which a battery for supplying radio power to a radio wristwatch and an earphone are housed.

[Problem that the invention attempts to solve]

In most cases, the various electroacoustic transducers mentioned above are lightweight and small, but do not have functions that make them convenient to carry, and are carried in a pocket or the like, and are not equipped with earphones during actual use. When I tried to take out the main body, the external connection cords got tangled, making it inconvenient to handle.

Furthermore, even if the device has a storage case, it is troublesome to store it, and the storage case itself is bulky.

Furthermore, earlobe suspension type earphones have a structure in which the earlobe is pinched from below and the cord extends downward, so when the earphone is secured to the breast pocket of clothes, for example, with this clip mechanism, the cord is inserted from the top. Not only does this protrude, causing the cord to become a nuisance, but there is also a high risk that the cord connection portion will be damaged. Therefore, earlobe suspension clips are not suitable for securing earphones.

Therefore, the purpose of this invention is to create a transducer that is easy to store and take out, and is portable, without impairing the acoustic characteristics of conventional electroacoustic transducers and the wearability when attached to the auricle, and without using a special storage case. The object of the present invention is to provide a convenient electroacoustic transducer.

[Means to solve the problem]

This invention is an electroacoustic transducer having an electroacoustic transducer element in an outer casing 3, in which a protector 2 is provided on the front surface of the outer casing 3,
A cord holding section 4 extending downward is provided on the rear surface of the outer casing.
The electroacoustic transducer is characterized in that it has a clip mechanism on the opposite side of the cord holder 4 from the protector 2 that cooperates with the cord holder 4 and opens downward.

[Effect]

An elastic clip piece 6 is formed on the cord holding part 4 extending below the rear surface of the outer casing 3, and the clip piece 6 and the extending part 7 of the cord holding part 4 constitute a clip mechanism. . Since this clip mechanism is opened downwardly, when the electroacoustic transducer is locked by the clip mechanism, the cord 9 is extended downwardly.

〔Example〕

An embodiment in which this invention is applied to an auricle insertion type electroacoustic transducer used in portable radios, portable cassette tape recorders, etc. will be described below with reference to the drawings.

FIGS. 1A and 1B show a side view and a rear view of an embodiment of this invention. In FIG. 1, 1 indicates the earphone of this embodiment as a whole.

The earphone 1 has an outer casing 3 containing an electroacoustic transducer including a diaphragm, a magnetic circuit, and the like.

The outer casing 3 is made of, for example, a synthetic resin, and is sized to fit into the recess of the auricle, that is, the concha cavity. Furthermore, a radial rectangular notch is provided on the outer circumferential surface of the outer casing 3, and the earphone 1 is of an open-air type.

A protector 2 is attached to the front surface of the outer casing 3. This protector 2 is a plate-like member in which a large number of micro-holes are formed by a processing method such as electroforming or etching, and is attached to the front surface of the outer casing 3 with adhesive or the like so that the micro-holes become sound emitting holes. It is fixed.

A cord holding portion 4 is fixed to the rear surface of the outer casing 3, that is, the rear surface of the outer casing 3 on the opposite side to which the protector 2 is attached, using an adhesive or the like.

The cord holding part 4 consists of a base part 5, a clip piece 6, and an extension part 7, and is integrally molded from, for example, synthetic resin. Base 5 of cord holding part 4
is attached to the rear surface of the outer casing 3, and extends from the base 5. The extension part 7 is formed in a substantially cylindrical shape and extends from the base 5 to extend and guide the external connection cord 9 so as to hang downward. Further, on the surface of the base 5 opposite to the surface that comes into contact with the outer casing 3, a clip piece 6 is bent into a substantially L-shape so as to be substantially parallel to the extending direction of the extending portion 7.
is provided. That is, the clip piece 6 and the outer surface 7a of the extension part 7 constitute a clip mechanism that is open in the direction in which the cord holding part 4 extends.

Furthermore, a cord lead-out portion 8 is provided at the end of the extension portion 7 using a flexible synthetic resin.

The external connection cord 9 connected to the electroacoustic transducer inside the outer casing 3 is connected to the base 5 of the cord holding part 4,
It is guided by the extension part 7 and the cord lead-out part 8, and is led out from the cord lead-out part 8. Although not shown, an external connection plug is provided at the tip of the external connection cord 9.

FIG. 2 shows a state in which an embodiment of this invention is attached to the auricle. In FIG. 2, 10 is the auricle. The auricle 10 has a concave portion and a convex portion following the ear canal, and the concave portion is the concha cavity 11,
The convex parts protruding toward the concha cavity 11 side are the tragus 12 and the antitragus 13, and the groove-shaped part formed by the tragus 12 and the antitragus 13 is the intertragal notch 1.
It is 4.

The outer casing 3 is fitted into the concha cavity 11, at least two points on the outer peripheral surface of the outer casing 3 are supported by the tragus 12 and the tragus 13, and the extension part 7 of the cord holding part 4 is inserted into the tragus cut. The earphone is placed along the trace 14, and at least one point of the inner surface 7B of the extension part 7 is brought into contact with the outer surface of the earlobe 15, so that the earphone is supported at three points.

In such a state, the clip piece 6 is attached to the outer casing 3.
Since it is provided on the side opposite to the protector 2 side, that is, on the side opposite to the front side of the outer casing which becomes the mounting surface when the auricle is attached, it does not come into contact with any part of the auricle.

FIG. 3 shows an example of the present invention in use. In FIG. 3, 20 is a cassette tape recorder. cassette tape recorder 2
0 is stored in the pocket formed by the pocket cover cloth 23, and the cassette tape recorder 20
An external connection plug 22 is fitted into the external connection jack 21 .

The external connection cord 9 is stored in the pocket. The earphone 1 is attached to the end 2 of the pocket lid cloth 23 by a clip mechanism constituted by the clip piece 6 and the outer surface 7a of the extending portion 7 of the cord holding portion 4.
It is locked by pinching 3a.

In this state, the protector 2 faces inward, a portion of the outer casing 3 is exposed outside the pocket, and the external connection cord 9 is led out downward.

FIG. 4 shows a side view of another embodiment of this invention. In FIG. 4, 33 is an outer casing. The outer casing 33 has an electroacoustic conversion element therein, a protrusion 37 in which a sound emitting hole is formed on the front surface of the outer casing 33, and a cord holding part extending downward. It has 34. This protrusion 3
7 is fitted with a separate pinna insertion portion 38 having a sound path molded therein.

Furthermore, a clip piece 36 is integrally formed on the rear surface of the outer casing 33. Therefore, the cord holding portion 34 and the clip piece 36 constitute a clip mechanism.

Note that this invention can be easily applied to other types of electroacoustic transducers.

[Effect of idea]

In this invention, the clip pieces are provided at opposite positions to the protector with the outer casing in between. Therefore, when worn on the auricle, the clip piece does not come into contact with any part of the auricle. On the other hand, when stored, the cord can be attached to the end of a pocket, collar, etc. with the cord guided downward by a clip mechanism consisting of a clip piece and a cord holding section. Therefore, the earphones can be easily stored and taken out, and furthermore, it is possible to prevent the external connection cord from becoming tangled. That is, according to this invention, the electroacoustic transducer is easy to store and take out, and is convenient to carry, without impairing the acoustic characteristics or wearability of conventional electroacoustic transducers, and without using a special storage case. An electroacoustic transducer can be realized.

[Brief explanation of the drawing]

Figure 1 is a side view and rear view of an embodiment of this invention, Figure 2 is a diagram used to explain when an embodiment of this invention is worn on the auricle, and Figure 3 is a storage of an embodiment of this invention. A sectional view used to explain the state, and FIG. 4 is a side view of another embodiment of this invention. 2...Protector, 3,33...Outer casing, 4,3
4... Cord holding part, 6, 36... Clip piece,
38...Auricular insertion part.

Claims (1)

[Claims for Utility Model Registration] In an electroacoustic transducer having an electroacoustic transducer inside an outer casing, a protector is provided on the front part of the outer casing,
The rear surface of the outer casing has a cord holding part extending downward, and the cord holding part has a clip mechanism on the opposite side of the protector that cooperates with the cord holding part and opens downward. An electroacoustic transducer featuring: