JP2001135945A - Waterproof structure for portable radio set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure for an extremely convenient portable radio set in which generation of vibrating noise (a vibrating-noise generating phenomenon caused by touching of a vibrating waterproof film to the front grill) is eliminated, and depending on the use environment, S/N (the ratio of the input level on a microphone to noise level) is enhanced, or even if the microphone hole is closed, voice of the user can be picked up surely. SOLUTION: A groove that connects a microphone hole, through which input voice to the microphone passes to a speaker hole, through which output voice from the speaker passes, and a penetrating hole that reaches the groove, are formed in the front panel. Furthermore, a freely detachable gum cap is arranged in the penetrating hole. By attaching the gum cap, environmental sound (noise) in the surrounding is eliminated to enhance the S/N ratio, whereas, by taking off the gum cap, voice of the user can be picked up surely, even if the microphone hole is plugged up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure around a speaker and a microphone in a portable wireless device.

[0002]

2. Description of the Related Art An example of a waterproof structure of a conventional portable radio will be described with reference to FIGS. 2 and 3 are cross-sectional views each showing an example of a waterproof structure of a conventional portable wireless device.

First, the waterproof structure of the portable radio shown in FIG. 2 will be described. The microphone 2 is held in the boss 17 a of the front panel 17 via the microphone rubber 13, and the substrate 16 on which the speaker 1 is adhered with the double-sided adhesive 14 is fixed to the front grill 18 via the front panel 17 with the screw 15. Have been. The waterproof film 20 is attached to the front panel 17 with a space provided before and after the waterproof film 20.

Next, the waterproof structure of the portable radio shown in FIG. 3 will be described. The microphone 2 is held in the concave portion of the holder 4 via the microphone rubber 13, and the waterproof film 5 and the spacer 9 are attached to the front panel 3 via a double-sided adhesive 10. The microphone rubber 13 is pressed so as to be in close contact with the spacer 9, and the speaker 1 and the net 6 are adhered to the front panel 3 with double-sided adhesives 12 and 19.

[0005]

In the waterproof structure of the portable radio shown in FIG. 2, the central portion of the portable wireless device is bent due to a thin waterproof film and a large area of the waterproof film at the time of assembly. There is a drawback in that a work of applying heat and extending the film is required to prevent the sound from creaking. On the other hand, in the use state, the surrounding environmental sound (noise) is easily picked up by picking up sound with a waterproof film having a large area during a call, so that the S / N (SIGNAL-TO-NOISE RAT) is used.
IO In this specification, the ratio between the input signal level of the microphone and the noise level. ) Is reduced. Further, when used in an environment in which iron powder floats, the iron powder sucked by the speaker is laminated on the vibrating waterproof film, so that there is a drawback that the iron powder comes into contact with the front panel to cause shaking. Furthermore, since the sum of the thickness of the front panel and the front grille becomes the thickness of the housing, there is a disadvantage that the thickness of the housing is disadvantageous.

On the other hand, in the waterproof structure of the portable radio shown in FIG. 3, the waterproof film exists not between the speaker and the front panel but between the microphone and the front panel. Noise). Further, even when used in an environment in which iron powder floats, the net does not vibrate (the net allows air to pass but does not vibrate), so that no shaking occurs. Further, since the thickness of the front panel becomes the thickness of the housing, the thickness of the housing can be reduced. Therefore, "S" which is a disadvantage of the portable wireless device having the waterproof structure shown in FIG.
/ N reduction "," the occurrence of shaking ", and" the disadvantage of thinning the housing "can be eliminated. However, it is difficult to remove the water that has entered the space between the waterproof membrane and the front panel when it is submerged. However, there is a disadvantage that the microphone may not be able to pick up the voice of the operator due to accidental closing with a finger.

Therefore, in the present invention, by removing this drawback, it is possible to eliminate the occurrence of shaking and to improve the S / N according to the use environment or to pick up the voice of the operator even if the microphone hole is closed. It is an object of the present invention to provide an extremely convenient waterproof structure of a portable wireless device which can surely perform the above.

[0008]

According to the present invention, there is provided a groove connecting a microphone hole through which an input sound to a microphone passes and a speaker hole through which an output sound from a speaker passes. And a through hole in the front panel
Further, a removable rubber cap is provided in the through hole. By attaching this rubber cap, S / S
It is intended to improve N and to prevent the water-resistant film from shaking. On the other hand, by removing the rubber cap, even if the microphone hole is closed, the voice of the operator can be picked up, and the waterproof film can be prevented from shaking.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof structure of a portable wireless device according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view illustrating a waterproof structure of the portable wireless device of the present embodiment. The microphone 2 is held in the concave portion of the holder 4 via the microphone rubber 13, and the waterproof film 5 and the spacer 9 are attached to the front panel 3 via a double-sided adhesive 10. The microphone rubber 13 is pressed so as to be in close contact with the spacer 9, and the speaker 1 and the net 6 are attached to the front panel 3 with double-sided adhesives 12 and 19. Even when used in an environment where iron powder floats, the net 6 does not vibrate (the net 6 allows air to pass, but does not vibrate), so that even if iron powder adheres, there is no occurrence of shaking.

Furthermore, a space 8c between the speaker 1 (the speaker 1 is a waterproof speaker) and the net 6 (the net 6 allows water and air to pass), and a space between the waterproof film 5 and the front panel 3. A groove 8d is provided so that 8b communicates therewith.
The groove 8d is provided with a hole 8e communicating with the outer surface of the front panel 3, and a rubber cap 11 which is detachable from the hole 8e is mounted. The rubber cap 11 is also detachable from the microphone hole 8a. When the rubber cap 11 is attached to the hole 8e, the waterproof film 5 is present between the microphone 2 and the front panel 3 so that it is difficult to pick up ambient environmental noise (noise), thereby improving S / N. it can. When the rubber cap 11 is attached to the hole 8a,
Although the S / N ratio is lower than that when mounted in the hole 8e, water entering the space 8b can be removed. When the rubber cap 11 is not attached to either of the holes 8a and 8e,
Although the S / N ratio is lower than when mounted in the hole 8e, even if the operator accidentally closes the holes 8a and 8e, the operator's voice can be reliably picked up via the space 8c.

As described above, in the present embodiment, the occurrence of shaking can be eliminated. Further, the S / N can be improved by attaching and detaching the rubber cap 11 according to the usage environment by the operator, or the operator's voice can be reliably picked up even if the microphone hole is closed.

[0012]

According to the present invention, it is possible to improve the S / N by removing the occurrence of shaking and to attach / detach a rubber cap according to the use environment, or to improve the S / N or to close the microphone hole. Since the voice of the operator can be reliably picked up, a very convenient waterproof structure of the portable wireless device can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a waterproof structure of a portable wireless device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an example of a waterproof structure of a conventional portable wireless device.

FIG. 3 is a sectional view showing an example of a waterproof structure of a conventional portable wireless device.

[Explanation of symbols]

1: Speaker 2: Microphone 3: Front panel 4: Holder 5: Waterproof film 6: Net 7: Double-sided adhesive 8a: Hole 8b: Hole 8c: Space 8d: Groove 9: Spacer 10: Double-sided adhesive 11: Rubber cap 12 : Double-sided adhesive 13: Microphone rubber 14: Double-sided adhesive 15: Screw 16: Substrate 17: Front panel 17a: Boss 18: Front grille 19: Double-sided adhesive 20: Waterproof film

Claims (2)

[Claims] 1. A panel comprising a microphone, a speaker, a microphone hole for passing an input sound to the microphone, and a speaker hole for passing an output sound from the speaker, and a panel provided between the panel and the microphone. A waterproof film that vibrates when an input sound passes therethrough, and a net provided between the panel and the speaker, and a net through which an output sound from the speaker passes or is transmitted. The panel is provided with a groove connecting the speaker hole and a through-hole communicating with the groove, and a detachable rubber cap is provided in the through-hole. When the rubber cap is attached, the S / N of the input sound is reduced. A waterproof structure for a portable wireless device, characterized in that the structure is improved so as to prevent the waterproof film from rolling. 2. The waterproof structure of a portable wireless device according to claim 1, wherein even if a microphone hole is closed when said rubber cap is removed, a voice of an operator can be picked up and a waterproof film is prevented from shaking. A waterproof structure for a portable wireless device, characterized in that a waterproof structure is provided.