JPS59110299A - Acoustic transducer - Google Patents

Abstract

PURPOSE:To obtain waterproof effect without deterioration in acoustic effect by packing a waterproof material which has gas permeability and sound absobency in the space formed of a housing and the rear surface of a driver, and arranging the waterproof material so that it covers the internal surface of a grill. CONSTITUTION:A waterproof screen 14 blocks the opening part 5 of the housing 4, and a waterproof resistor 15 is inserted into the space formed of a collector housing 3, the housing 4, and the driver 7. The waterproof sound absorbing material 16 is provided in the driver 7, and nonwoven fabric 18 is inserted between the waterproof screen 17 and a protector 10. Then, the headphones are used without any deterioration in sound quality by being applied to ear nasal concha lobes. Further, the resistor 15, sound absorber 16, screen 17, and nonwoven fabric 18 are provided, so the headphones are protected against water sufficiently even when dropped in water and exposed to rain.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an acoustic transducer.

[Background technology and its problems]

Traditionally, acoustic transducers, such as headphones and microphones, do not have a waterproof (splash-proof) function, so if they are dropped into water or exposed to rainwater, moisture may enter the acoustic transducer, deteriorating the acoustic response or making it difficult to use the transducer. Sometimes it became impossible. In particular, small headphones are often used outdoors, so the following
This will be explained using small headphones as an example.

Figure 1 is a diagram showing an example of headphones that are used by directly inserting them into the ear.Headphones H have a housing 4 inserted into the concha cavity A, fixed to the ear with 8 and a stubble C, and a notch between the stumps. The code 1 is derived from the connector housing 3 using O.

FIG. 2 is a partially cutaway perspective view of such headphones, and FIG. 3 is a side sectional view thereof, where H is a headphone, 1 is a cord,
2 is the collar through which the cord 1 is inserted, 3 is the collar 2
A connector housing 4 is a housing into which the connector housing 3 is inserted, and an opening 5 is provided on the side surface of the housing.
is the provision. 6 is a resistor attached to the housing 4 so as to close the opening 5; T is a driver unit that is locked to the connector housing 3 and 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 of the driver unit 7, 1o is a protector having an opening, 11 is a 300 mesh screen, 12 is 50 μm thick =
A honeycomb structure grill 13 having an opening of 100 μm and a hole diameter of 200 μm is provided within the frame of the driver unit 7 with a protector 10. Screen 11. and a ring for fixing the grille 12.

Headphones H configured as described above are connected to the concha of ear E as shown in Figure 1. l'): It is used by inserting it into A. The grill 12 prevents earwax and dust from entering, the screen 11 similarly prevents earwax and hair from entering, and the protector 10 protects the driver unit 7. It has the function of protecting. However, since the headphones H are not equipped with a waterproof (splash-proof) function, if they are dropped into water or rainwater splashes on them, they may pass through the register 6 through the opening 5 on the back, or the grill 12 or screen 11 on the front. Moisture may pass through the protector 10 and enter the headphones H, deteriorating the acoustic characteristics or rendering them unusable.

[Object of the Invention] The present invention has been made in view of the above points, and provides an acoustic transducer with an added waterproof (splash-proof) effect.

[Summary of the invention]

In order to achieve the above object, the present invention includes a space formed between the housing and the rear surface of the driver unit filled with a waterproof material having breathable and sound-absorbing properties, and a waterproof material having breathable properties covering the inner surface of the grille. The acoustic transducer is equipped with a waterproof (splash-proof) effect.

〔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. 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 the connector housing 3. A waterproof register inserted into the space formed by the housing 4° and the driver unit 7, 16 a waterproof sound absorbing material provided in the driver unit γ, 17 a waterproof screen having the same structure as a conventional screen, and 18 the waterproof screen 17. This is a waterproof nonwoven fabric inserted between the protector 100 and the protector 100. Waterproofing (splash-proofing) treatment involves coating or impregnating cloth or non-woven fabric with a water-repellent substance such as silicone or fluororesin, making it waterproof (water-repellent) while maintaining breathability.
It has added gender.

Since the headphone H of the present invention is constructed as described above, the headphone H is inserted into the concha cavity A of the ear E as in FIG.
There is no deterioration in the sound quality even if you insert and use the waterproof resistor 15, waterproof sound absorbing material 6, waterproof screen 17, and waterproof non-woven fabric 1 inside the headphones H.
8, so you can protect your headphones from moisture even if you drop them into water or get rainwater. Therefore, if headphones H are dropped into water at a depth of 2 m,
I picked up the Headphones H and simply shook them to drain the water and was able to use them without any problems.

In addition, although the above embodiment was explained using small headphones H,
For other acoustic transducers, such as speakers and microphones, if the driver unit is similarly covered with waterproof material,
Waterproof function can be added.

〔Effect of the invention〕

As explained above, the sound 4IP converter of the present invention has waterproof material placed before and after the driver unit, so it is waterproof (
Drip-proof) effect can be added. Therefore, when the acoustic transducer is used outdoors, there is no problem in using it even if it is dropped into water or exposed to rainwater, so there is an advantage that the range of use can be expanded.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of conventional headphones, FIG. 2 is a partially cutaway perspective view of the headphones in FIG. 1, 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 the headphone, 4 is the housing, 5 is the opening,
T is a driver unit, 1o is a protector, 12 is a creel, 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, 18 is a waterproof nonwoven fabric 3Figure 3

Claims (1)

[Claims] ...In an acoustic transducer that includes a driver unit in a housing and covers the front side of the driver unit with a grill, a waterproof material having breathable and sound-absorbing properties is loaded in the space formed by the housing and the rear surface of the driver unit. , and an acoustic transducer characterized in that a waterproof material having breathability is arranged to cover the inner surface of the grill.