JPS6119599Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to prevent the cord with a protective sleeve from coming off even if it is inserted and held in the concha cavity of the auricle at the entrance of the external auditory canal, and is pulled. This invention relates to a cord holding mechanism for an earphone or the like that can be sufficiently inserted into a cavity and can be made thin and compact.

A conventional earphone is shown in FIG. That is, 1' rear case, 2' front case, 3' cord protection sleeve, 4' earplugs, 5' element, 6' relay terminal, and 7' cord. That is, since the direction of the earplug 4' and the cord 7' and the cord protection sleeve 3' are approximately at right angles, the cord does not escape when inserted into the ear canal, so that the ear plug can be inserted sufficiently deep into the ear canal. I couldn't do it. Also, since a hole is made on the side of the rear case 1' and the cord 7' is inserted and wired through the cord protection sleeve 3', there is no cord fixing device, so the cord moves easily and the wires tend to get tangled, come into contact with each other, or break. There was a problem.

The present invention was devised to overcome the above-mentioned difficulties.

Below, an example of the present invention will be explained with reference to the embodiments shown in the drawings.In particular, for earphones inserted into the concha cavity at the entrance of the external auditory canal, miniaturization is an essential requirement, and the outer shape and height are smaller. It is necessary that An inverted gourd-shaped hole 1b is provided in the back plate 1a of the rear case 1, and a rotation stopper hole 1b' is provided in a portion corresponding to the neck of the gourd. The concave groove 3 of the cord protection sleeve 2 with a rotation stopper 2b is fitted into the small notched circular hole 1c of the hole 1b, and the rotation stopper 2b is locked in the rotation stopper hole 1b' and held immovably. This is an earphone cord holding mechanism in which a fixed plate 4 such as a name plate is adhered to a back plate 1a. Corded protective sleeve 2 is code 5
and a protective sleeve 2a are integrally molded. A concave groove 3 cut into a circumferential shape is provided at the front end of the sleeve 2 , and a rotation stopper 2b is provided in a portion of the groove 3. The cord protection sleeve 2 with a cord is connected straight to the back plate 1a of the rear case 1, and the protection sleeve is curved with a slight curvature, so that when inserting the earphone into the concha cavity, it is possible to insert the earphone into the ear canal as deeply as possible. It is soft to the ear and allows you to listen to sound efficiently. 6 is the front case, 7 is the terminal board, 8 is the ear pad, 9
is an element including a moving coil and the like.

In addition, the shape of the gourd hole, the structure of the cord protection sleeve with the cord, and the provision of a stopper mechanism that prevents the cord from moving inside the rear case without integrating the cord protection sleeve with the cord prevents the cord from coming off due to external force. Any other design changes other than those described in the specification and drawings may be freely made without departing from the spirit of the present invention.

According to the present invention, an inverted gourd hole 1b having a rotation stopper hole 1b' is provided in the back plate 1a of the rear case 1 that holds an element including a small thin flat cylindrical moving coil, etc., and is integrally formed therein. After fitting the concave groove 3 provided at the front end of the corded protective sleeve that hangs down with an appropriate radius, the rotation stop 2b provided in the concave groove 3 is inserted into the rotation stop hole 1b' of the hole 1b. Since the earphone cord holding mechanism is formed by attaching the fixing plate 4 such as a name plate to the back plate 1a, the entire earphone is formed small and flat, and the cord protection sleeve with the cord is slightly rounded. Since the earphone is formed so that there is room for insertion into the ear canal, the earphone can be inserted sufficiently deep into the concha cavity of the ear, and the sound from the earphone can be heard with sufficient efficiency.

Furthermore, the rotation stopper 2b in the concave groove 3 of the corded protective sleeve 2 is locked in the rotation stopper hole 1b' of the inverted gourd hole 1b and cannot be moved.
Since b is closed, the corded protective sleeve is held immovably, thereby preventing wire breakage, shorting, and other failures due to twisting of the cord.

Furthermore, the structure is simple, the workability is good, the manufacturing is easy, and the manufacturing cost is low, so the practical benefits are great.

[Brief explanation of the drawing]

Figure 1 is a vertical side view of an example of a conventional earphone, Figures 2 to 5 are related to the earphone of the present invention, Figure 2 is a partially enlarged vertical side view, and Figure 3 is a front view of the rear case. Figure 4 is a front view of the fixed plate,
FIG. 5 is a partially cutaway side view of the corded protective sleeve. 1'...Rear case, 2'...Front case, 3'
...Cord protection sleeve, 4'...Earplugs, 5'...
Element, 6'...Relay terminal, 7'...Cord,
1... Rear case, 1a... Back plate, 1b... Inverted gourd hole, 1b'... Rotation stopper hole, 1c... Small notched circular hole, 2b... Rotation stopper, 2 ... Cord protection sleeve with cord, 2a...Protective sleeve, 3...Concave groove, 4...Fixing plate, 5...Cord, 6...Front case, 7...Terminal board, 8...Ear pads, 9...
…element.

Claims (1)

[Scope of utility model registration request] In earphones, etc., the back plate 1 of the rear case 1
A gourd-shaped hole 1b is provided in a, into which a concave groove 3 of a cord protection sleeve 2 with a rotation stopper 2a is fitted and held, and a fixing plate 4 such as a name plate is adhered to the back plate 1a. Cord retention mechanism for earphones, etc.