JPH0648871B2 - headphone - Google Patents

Description

TECHNICAL FIELD The present invention relates to an acoustic transducer.

[Background technology and its problems]

Conventionally, acoustic transducers, such as headphones and microphones, do not have a waterproof (drip-proof) function, so if dropped into water or exposed to rainwater, water will enter the acoustic transducer and the acoustic characteristics will deteriorate, making it unusable. It has become. Hereinafter, a small headphone that is often used outdoors will be described as an example.

FIG. 1 is a view showing an example of a headphone that is used by directly inserting it into the ear. Headphone H inserts housing 4 into concha cavity A and fixes it with tragus B and antitragus C, The cord 1 is derived from the connector housing 3 by utilizing D.

FIG. 2 is a perspective view in which a part of the headphone is cut away,
FIG. 3 is a side sectional view thereof, where H is a headphone, 1 is a cord, 2 is a collar through which the cord 1 is inserted, 3 is a connector housing into which the collar 2 is inserted, and 4 is a housing into which the connector housing 3 is fitted. The opening 5 is provided on the peripheral surface. Reference numeral 6 is a resistor attached to the housing 4 so as to close the opening 5, 7 is a driver unit which is locked in the connector housing 3 and is housed in the housing 4, 8 is a sound absorbing material provided in the driver unit 7, 9 is a terminal plate attached to the back surface of the driver unit 7, 10 is a protector having an opening, 11
Is a screen of 300 mesh, 12 is a thickness of 50 μm
A honeycomb mechanism grill having an opening of 100 μm and a hole diameter of 200 μm, and 13 is a ring for fixing the protector 10, the screen 11, and the grill 12 in the frame of the driver unit 7.

The headphone H configured as described above is used by inserting it into the concha space A of the ear E as shown in FIG. 1, but the grill 12 prevents entry of earwax and dust, and the screen 11
Also protects the earwax and hair from entering and protector 10
Has a function of protecting the driver unit 7.
However, since the headphone H is not provided with a waterproof (drip-proof) function, if it is dropped into the water or splashed with rainwater, it will pass through the register 6 through the opening 5 on the rear surface or the grill 1 on the front surface.
2, the water passes through the screen 11 and the protector 10 and enters the headphone H to deteriorate the acoustic characteristics.
It may become unusable.

[Object of the Invention]

The present invention has been made in view of the above points, and provides an acoustic transducer having a waterproof (drip-proof) effect.

[Outline of Invention]

In order to achieve the above-mentioned object, the present invention has a waterproof material having breathability and sound absorption, which is loaded in a space formed by a housing and a rear surface of a driver unit, and which has breathability so as to cover an inner surface of a grill. Is arranged to add a waterproof (drip-proof) effect to the acoustic transducer.

〔Example〕

FIG. 4 is a side sectional view of a headphone showing an embodiment of the present invention, and the same symbols as in FIG. 3 indicate the same parts. Reference numeral 14 is a waterproof screen which has the same structure as a conventional screen and closes the opening 5 of the housing 4, 15 is a waterproof resistor inserted in the space formed by the connector housing 3, housing 4, and driver unit 7, and 16 is the driver. A waterproof sound absorbing material provided in the unit 7, 17 is a waterproof screen having the same structure as a conventional screen, and 18 is a waterproof nonwoven fabric inserted between the waterproof water screen 17 and the protector 10. In addition, waterproof (drip-proof) treatment is performed by applying or impregnating a cloth or non-woven fabric with a substance having water repellency such as silicon or fluorine resin, and maintaining water permeability (water repellency).
It is the one to which sex is added.

Since the headphone H of the present invention is configured as described above, the headphone H is placed in the concha space A of the ear E as in FIG.
Even if you insert and use, you can use it without degrading the sound quality. Then, in the headphone H, the waterproof register 15, the waterproof sound absorbing material 16, the waterproof screen 17 and the waterproof non-woven fabric 1 are provided.
Since 8 is provided, the headphone H can be protected from moisture even if it is dropped in water or rainwater is splashed. Therefore, when the headphone H is dropped into water with a depth of 2 m,
Headphones H were discarded and simply shaken for draining operation, and could be used without problems.

Although the above embodiment has been described with the small headphone H,
If other acoustic transducers, such as a speaker and a microphone, are similarly covered with a waterproof material,
A waterproof function can be added.

〔The invention's effect〕

As described above, in the acoustic transducer of the present invention, the waterproof material is arranged before and after the driver unit, so that the waterproof (drip-proof) effect can be added. Therefore, when the acoustic transducer is used outdoors, it does not cause any inconvenience to use even if it is dropped into the water or rainwater once, so there is an advantage that the range of use can be expanded.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a conventional headphone, FIG. 2 is a perspective view in which a part of the headphone of FIG. 1 is broken, FIG. 3 is a side sectional view of FIG. 2, and FIG. It is a side sectional view showing one example. In the figure, H is a headphone, 4 is a housing, 5 is an opening,
7 is a driver unit, 10 is a protector, 12 is a grill, 13 is a ring, 14 is a waterproof screen, 15 is a waterproof register, 16 is a waterproof sound absorbing material, 17 is a waterproof screen, and 18 is a waterproof nonwoven fabric.

Claims (1)

[Claims] 1. A driver unit, a housing for accommodating the driver unit, and a housing formed so as to be inserted into the concha of the ear, and a grill attached to the housing so as to cover the front surface of the driver unit. And an opening provided on the back side of the driver unit so that sound from the driver unit is emitted to the outside of the housing when the housing is inserted into the concha cavity. A first waterproof material having air permeability and sound absorption provided on the inner surface of the housing so as to close the opening, and provided between the grill and the driver unit so as to cover the inner surface of the grill. And a second waterproof material having breathability, wherein the back side and the front side of the driver unit are waterproofed by the first and second waterproof materials, respectively. Headphones, characterized in that it is.