JPS6379500A - Earphone - Google Patents

Abstract

PURPOSE:To obtain a good charging feeling to the cavity of an ear by providing an ear pad freely attachably and detachably at the sound radiating surface side of a housing and an engaging part on the front outer peripheral part thereof. CONSTITUTION:The electroacoustic transducing element 21 incorporated housing 22 is formed to a size capable of being stored in the cavity of the ear. When the housing 22 is stored in the cavity of the ear, the engaging part 29 engaged at a part of the ear is disposed in the front outer peripheral part of the housing 22. Further, the ear pad 23 having an acoustic transmissivity is freely attachably and detachably attached to the radiating surface side of the housing 22. This ear pad 23 is elastically deformed so as to match to the cavity of the ear.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an auricle-mounted electric sound V transducer that is designed to improve the usability and fit.

[Conventional technology]

Conventionally, earphones used for listening to music, etc. include sealed electrodynamic earphones configured as shown in Figure 6, oven air type earphones configured as shown in Figure 7, etc. It has been known.

The earphone shown in FIG. 6 is constructed by housing a magnetic circuit section 4 and a movable iron piece 5 that functions as a photographing plate in a housing 3 that has a cylindrical protrusion 2 with a ventilation hole l on the front side. has been done. The earphone configured in this manner is worn by fitting the ear plug 6 made of flexible synthetic resin or the like into the protrusion 2 and inserting and holding the ear plug 6 into the ear canal of the user. be done.

The earphone shown in FIG. 7 also has an electroacoustic transducer 16 consisting of a magnetic circuit section 14 and a diaphragm 15 housed in a housing 13 that has a cylindrical protrusion 12 with a ventilation hole 11 on the front side. It is composed of This earphone is configured such that a through hole 17 is formed across the magnetic circuit section 14 and the housing 13 so that the back pressure of the diaphragm 15 is released to the outside of the housing 13. The earphone is worn by fitting a flexible ring pad 18 made of urethane or the like onto the outer periphery of the protrusion 12, and inserting and holding the protrusion 12 into the ear canal of the user.

[Problem that the invention seeks to solve]

By the way, since the earphone configured as shown in FIG. 6 is worn by inserting and holding the earplug 6 into the ear canal of the user, the earphone has a very good wearing feeling with no pressure feeling when wearing it. Not only will the earplugs 6 block the ear canal, so if you wear them for a long time, you will sweat and easily remove them, making it impossible to get a good fit. Furthermore, since this earphone is intended to be attached to the auricle via the ear plug 6, the distance between the eardrum and the iron piece 5 as the vibrating part is large, making it difficult to hear good high-fidelity sound. Can not.

Furthermore, even with the earphone configured as shown in FIG. 7, the protruding portion 12 fitted with the annular band 18 is inserted and held in the external ear canal, so that the earphone does not feel pressured when worn. This has the problem that a particularly good wearing feeling cannot be obtained.

Therefore, the present invention aims to solve the problems that conventional earphones have as described above, and provides a good wearing feeling that corresponds to the size of the concave part of the auricle of the individual wearing the earphone. This was proposed for the purpose of providing an auricular-mounted electroacoustic transducer that can be worn comfortably for a long time by any person and enables even better high-fidelity playback. It is.

[Means for Solving the Problems] In order to achieve the above object, the present invention forms a housing containing an electroacoustic transducer in a size that can be accommodated in the recess of the auricle. A locking part that is locked by a part of the auricle when stored in the recess of the auricle is provided on the front outer periphery of the housing, and an earbud having acoustic transparency is detachably attached to the sound emitting surface side of the housing. It is constructed by attaching it.

[Effect]

In the earphone according to the present invention, when the housing formed to a size that can be stored in the recess of the auricle is stored in the recess, the earbud attached to the sound emitting surface side of the housing corresponds to the recess. The housing is elastically displaced as shown in FIG.

Moreover, if necessary, the earbuds are removed and stored and worn in the recess of the auricle.

(Example) Hereinafter, specific examples of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the earphone electroacoustic transducer according to the present invention has an electroacoustic transducer element 21 built-in and can be housed in a recess in the concha cavity, which is a recess in the auricle a. It is composed of a housing 22 formed to a suitable size, and an earbud 23 that is detachably attached to the front side of the housing 22, which is the sound emitting surface side.

Electroacoustic transducer 21 built into the housing 22
As shown in FIG. 2, the voice coil horn 26 is connected to the diaphragm 24 so as to hang down from the center of the lower surface of the diaphragm 24, and is inserted into the magnetic gap of the air circuit 25. It is constructed as an electrodynamic speaker unit in which the diaphragm 24 is caused to swing by supplying an audio signal to the voice coil 27. In addition, in order to make the electric sound 81 conversion element 21 small and obtain high reproduction output, a rare earth magnet such as a samarium cobalt magnet with excellent magnetic properties is used for the magnet constituting the magnetic circuit section 25. There is.

The housing 22 that accommodates the electroacoustic transducer 21 has a drilled portion 24a on the outer periphery side of the diaphragm 24 on the front outer periphery of the magnetic circuit housing portion 28 that accommodates the magnetic circuit portion 25 of the electroacoustic transducer 21. A locking portion 29 is provided to support the ear and to be locked by the tragus C and the tragus d when the ear is housed in the concave cavity of the concha cavity of the pinna a.

That is, the locking portion 29 is formed in the magnetic circuit storage portion 28 in an annular shape so as to protrude outward so that the front side has a larger diameter. Further, an annular rising portion 3o is formed around the outer periphery of the locking portion 29.

Further, in the diaphragm 24, an edge portion 24a extending on the inner circumferential surface of the upper locking portion 29 is supported by a support ring 31 that is fitted and disposed on the inner circumferential side of the rising portion 3o. It is attached to the front side of the housing 22 by. Further, a protector 32 that covers the entire surface of the diaphragm 24 is attached to the front side of the locking portion 29 via the support ring 31. This protector 32 has many ventilation holes 33.
The diaphragm 24 is made of a thin metal plate or the like formed in the shape of a mesh with perforations, and is formed into a gently curved shape with a bulge in the center so as to substantially correspond to the curved shape of the diaphragm 24.

By the way, when this earphone is attached to the auricle, the locking part 29 is housed in a recess in the concha cavity of the auricle a, and is locked by the tragus C and the tragus d with an appropriate fit. Because it is formed to a size large enough to be
It is formed to have an outer diameter dimension 11 that approximately corresponds to the concave portion of the concha cavity of a typical person's auricle a, and in this embodiment, it is formed to be about 1.8 cm. In addition, the locking portion 29
The rising portion 30 provided around the outer periphery of the auricle a is also designed to fit into the concha cavity of the auricle a so that when it is attached to the auricle, it can be accommodated in the concave cavity of the concha cavity of the auricle a with an appropriate fit. It is formed to have a thickness of 12 approximately corresponding to the depth of the recess, and in this embodiment, is approximately 1.5 mm.

On the front side of the protector 32, which is the sound emitting surface side, an ear pad 23 made of a porous, elastically displaceable, flexible and acoustically transparent material, such as urethane, is detachably attached. Installed. This ear pad 2
3 is formed into a camp shape with the opening side reduced in diameter, and covers the entire surface of the protector 32 as shown in FIG. can be installed. This ear pad 2
3 is simply fitted and attached to the housing 22, and can be removed if necessary.

Further, on the back side of the housing 22, a terminal plate 35 is provided to which one end of an external connection cord 34 for supplying an acoustic signal to the electroacoustic transducer 21 is connected. This terminal plate 35 is integrally fixed to the housing 22 by a molded portion 36 made of synthetic resin or the like.

Furthermore, the earphone according to the present invention has a magnetic circuit section 25.
A through hole 37 is drilled that communicates from the axial center of the housing 22 and the terminal plate 35 to the mold section 36, and a ventilation hole 38 is drilled at a position corresponding to the diaphragm 24 of the locking section 29. It is configured as an oven air type device that emits back pressure of the diaphragm 24 to the outside of the housing 22 during driving.

As shown in FIG. 4, the earphone configured as described above has a housing 22 placed in a concave portion of the concha cavity of the auricle a with the sound emitting surface side on which the ear pad 23 is attached facing the external auditory canal e.
is stored and installed. At this time, the housing 22
The ear pad 23 attached to the outer periphery of the ear pad 23 is elastically displaced in accordance with the size and shape of the concave portion of the concha cavity of each individual, thereby conforming to the inner surface of the concave cavity of the concha cavity. It will be stored. Further, a part of the locking portion 29 provided on the housing 22 is locked and attached by the tragus C and the tragus d so as to be press-fitted.

As described above, since the earphone according to the present invention is provided with the locking part 29 and the earphone 23 that can be elastically displaced, it can be comfortably worn to fit the auricles of different sizes of individuals. It can be installed with.

Further, depending on the size of the concave portion of the concha cavity, by removing the ear pad 23, it becomes possible to accommodate a wider range of people's auricles.

Furthermore, since the earphone according to the present invention is formed with a large diameter shape covered with a protector 32 formed with a single curvature on the front side of the housing 22, the earphone is attached to the concave part of the concha cavity. When the locking part 29 is inserted into the ear canal, a part of the locking part 29 is inserted into the tragus C and the antitragus d.
Since the housing 22 is supported by the housing 22 and installed in the recess of the concha cavity, it is possible to wear the housing 22 for a long time with a good wearing feeling without creating a pressure window in the external auditory canal e. becomes.

Furthermore, in the earphone, the diaphragm 24 is located on the front side of the housing 22, which is housed in the recess of the concha cavity, so the distance between the diaphragm 24 and the eardrum can be brought closer, and the sound can be reproduced well. It becomes possible to listen to the following.

Furthermore, the earphone is configured such that the diaphragm 24 is supported by the locking portion 29, which has a larger diameter than the magnetic circuit storage portion 28 that stores the magnetic circuit portion 25, so that the vibration Fi2
4 can be made sufficiently large, and the magnetic circuit section 25 is constructed using rare earth magnets such as samarium cobalt magnets with excellent magnetic properties, so high-fidelity playback can be achieved with a small size. It has become a thing.

In the embodiments described above, the earband 23 is attached to the housing 22
The housing 22 is shaped to cover the sound emitting surface side of the housing 22 from the sound emitting surface side to the rear surface of the locking portion 29, and as shown in FIG. It may be of a type that fits around the rising portion 30.

In addition, an electric sound 9 conversion element 2 built in the housing 22
The speaker unit 1 is not limited to the electrodynamic speaker unit described above, but may also use a speaker unit such as an electrostatic speaker unit.

〔Effect of the invention〕

As described above, in the present invention, when a housing formed to a size that can be accommodated in the recess of the auricle is housed in the recess, the locking portion provided on the outer periphery of the front surface of the housing engages a part of the auricle. At the same time, the earbuds that are removably attached to the housing are elastically displaced to fit the size of the recess in the concha cavity of each individual person. A person can wear the device for a long time with a good wearing feeling without giving a feeling of pressure to the ear canal.

Furthermore, since the earbuds have sound transparency, they do not give excessive pressure to the hearing (and can reduce ear fatigue and discomfort even when used for a long time).

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of the earphone according to the present invention with the earbud removed, FIG. 2 is a longitudinal sectional view of the earphone, and FIG. 3 is a perspective view of the earphone attached to the auricle. FIG. 4 is a partially sectional perspective view of the earphone attached to the auricle. FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention. FIG. 6 is a cross-sectional view showing a conventional sealed type electrodynamic earphone, and FIG. 7 is a cross-sectional view showing a conventional oven air type earphone. 21...Electric sound 9 conversion element 22...Housing 23...Earbud 29...Locking part 30...Rising part a...Auricle b...Concha cavity C... Tragus d... tragus 1st figure Otsu 2nd figure gu hobo

Claims (1)

[Claims] A housing having a built-in electroacoustic transducer is formed to a size that can be accommodated in the recess of the auricle, and a lock that is engaged with a part of the auricle when the housing is stored in the recess of the auricle. An electroacoustic transducer comprising: a front outer periphery of the housing; and a sound-transmitting ear pad removably attached to the sound emitting surface side of the housing.