Ear piece transducer

Details Ear piece transducer Ear piece transducer

1985-08-13

1988-04-05

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

381188, H04M 105

Patent

active

047364351

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention generally relates to an electro-acoustic transducer and is more particularly directed to a compact electro-acoustic transducer which is adapted to engage and attach a cavum concha of a concave portion in an auricle upon operation, we call it, the auricle insertion system.


BACKGROUND ART

An earphone or headphone is well-known in the prior art as an electro-acoustic transducer which offers simplicity, compactness and portability.
The earphone has such a construction that a molded case secures within it a small electro-acoustic transducer element of an electromagnet type provided with a pipe protrusively mounted on one end surface thereof and providing a sound path. Upon wearing, the earphone thus constructed is so attached as to insert or engage the pipe with an external auditory meatus. Although such earphone is very compact and convenient, the tone quality thereof is not completely satisfactory due to employment of the electromagnet arrangement. In addition, since the pipe is adapted to be inserted into the external auditory meatus, pressure upon wearing inevitably occurs and depending upon the depth the foregoing pipe is inserted into the external auditory meatus, the user feels a pain or an abnormality in the external auditory meatus. Furthermore, it is unavoidable that reproduced tone quality will be deteriorated.
To remove these drawbacks of such prior earphones, an improved earphone has been proposed. Utilizing a dynamic speaker unit and installing a pad on one side of a case to house the above unit as well as an elastic bow on one end of an external periphery of the case, upon operation, the pad is securedly pressed or attached to an outside of the auricle and the bow is caught in an external periphery of the auricle. However, the earphone of this type can not be stably worn and moreover, the reproduced tone quality may be deteriorated by the position in which the earphone is attached to the auricle.
On the other hand, such a headphone is widely used by providing a pair of housings on both ends of an elastic headband and securing the dynamic or static speaker and so on within the housings. Each housing is securedly pressed or attached to the auricles by utilizing the elasticity of the head band. Even in the headphone thus discussed, the elasticity of the head band causes a pressure on the head, and a discomfort upon wearing can not be avoided. Further, in wearing by a woman, she is liable to refuse the use of the headphone specifically because she is afraid that her hair style may be broken.


DISCLOSURE OF INVENTION

Hence, a main object of this invention is to provide an electro-acoustic transducer which can eliminate the afore-described defects.
Another object of this invention is to provide an electro-acoustic transducer which can prevent an occurrence of discomfort upon wearing and can be stably attached.
Still another object of this invention is to provide an electro-acoustic transducer which is simple in construction and can be easily manufactured or worked.
A further object of this invention is to provide an electro-acoustic transducer which can prevent a deterioration of a sound characteristic such as a reproduced tone quality.
Still a further object of this invention is to provide an electro-acoustic transducer which positively, reliably prevents deposition of earwax, iron powder, dust and so forth from entering into a casing from the outside thereof, thereby to protect a diaphragm or the like of the electro-acoustic transducer element.
In order to perform solutions, in accordance with this invention, an electro-acoustic transducer is formed of an outer casing engaging with the concave portion of an auricle and a cord supporting member extended from the outer casing, such that the electro-acoustic transducer can be attached to and held at a part of the auricle by the outer casing and the cord supporting member without pressing the auricle.


BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of one embodiment of an electro-acoustic transducer acco

REFERENCES:
patent: 1601063 (1926-09-01), Frederick
patent: 2203105 (1940-06-01), Roberts
patent: 2964596 (1960-12-01), Christensen
patent: 3586794 (1971-06-01), Michaelis
patent: 3821647 (1974-06-01), Minasian
patent: 4133984 (1979-01-01), Akiyama
patent: 4403120 (1983-09-01), Yoshimi
patent: 4429194 (1984-01-01), Kamon et al.
patent: 4588867 (1986-05-01), Konomi
Transit-Ear Hearing Aid by the Maico Co., filed Mar. 8, 1954

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