JPH07336262A - Microphone mount structure for portable electronic device - Google Patents

Abstract

PURPOSE:To provide a splash proof function to the structure and to obtain a microphone mount structure for the portable electronic device with excellent assembling performance by press-fitting a specific microphone cover to a recessed part formed to a case and press-fitting a microphone to the microphone cover. CONSTITUTION:A microphone cover 10 made of a high elastic resin such as silicon rubber is fitted to a recessed part 5 made with a rib 4. The outer diameter of the cover 10 is selected somewhat larger than the outer diameter of the recessed part and the cover 10 is press-fit to the recessed part 5. Then a microphone 6 is press-fit to the cover 10 through a water-proof sheet 13 and the microphone 6 is supported by the elastic force of the cover 10. Furthermore, when the cover 10 is fitted to the recessed part 5, each of pleats 11 is pressed into contact onto the inner face of the recessed part 5 and the pleats 11 act as sealing. Moreover, since the microphone 10 is press-fitted to the cover 10, the rib 4 and the cover 10 are in close contact with each other and a torus projection 12 is in press contact with the sheet 13 thereby allowing the torus projection 12 to act as sealing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microphone mounting structure used in portable electronic equipment such as a mobile phone.

[0002]

2. Description of the Related Art A portable electronic device such as a mobile phone or a small tape recorder is equipped with a microphone as a voice input means.

Referring to FIG. 2, a conventional microphone mounting structure for a portable electronic device will be described.

FIG. 3 shows a mobile phone 1, and a microphone is provided below a front panel 2 of the mobile phone 1. FIG. 2 is a view corresponding to the arrow A of FIG.

The front panel 2 made of synthetic resin is provided with a through hole 3 for taking in sound. On the back side of the front panel 2, a recess 5 is formed by a rib 4 surrounding the through hole 3. It is integrally molded with 2. Microphone 6
Is fitted in the concave portion 5, the microphone 6 is fixed by a push lid 7, and the push lid 7 is fixed to the front panel 2 by a screw 8 screwed into the rib 4.

[0006]

In recent years, customer demands have become diversified, and portable electronic devices are required to have a splash-proof function so that they can be used outdoors without trouble regardless of rainfall. However, the conventional microphone mounting structure for a portable electronic device does not have a splash-proof structure, and rainwater that has entered through the through hole 3 enters the inside of the portable electronic device through the gap between the microphone 6 and the rib 4. .

Further, in the conventional case, the pressing lid 7 is fixed by the screw 8, the workability is poor, and since it is necessary to engrave a screw hole in the rib 4, the wall thickness must be increased. Further, there is a problem that a shrinkage that appears in a portion where the wall thickness is changed is likely to occur during molding, and the appearance is deteriorated.

In view of the above situation, the present invention aims to provide a microphone mounting structure for a portable electronic device which has a splashproof function and is easy to assemble.

[0009]

The present invention is characterized in that a microphone cover made of high-elasticity resin is press-fitted into a recess formed in the case of a portable electronic device, and the microphone is press-fitted into the microphone cover. To do.

[0010]

[Function] Since the press-fitted microphone cover is interposed between the microphone and the concave portion, the microphone mounting structure exhibits a splash-proof function, and the microphone is simply press-fitted into the microphone cover, and the mounting is easy.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a view corresponding to the arrow A in FIG.
The same parts as those shown in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted.

A microphone cover 10 made of a highly elastic resin such as silicon rubber is fitted into the recess 5 formed by the rib 4. The outer diameter of the microphone cover 10 is slightly larger than the outer diameter of the recess 5, and the microphone cover 10 is press-fitted into the recess 5. Next, attach the microphone 6 to the waterproof sheet 1.
3 is inserted and pressed into the microphone cover 10. The microphone 6
Is held by the elastic force of the microphone cover 10.

On the outer peripheral surface of the microphone cover 10, a plurality of folds (4 ridges in the figure) of folds 11 having a serrated cross-sectional shape that inclines inward from the surface of the front panel 2 are formed at a required pitch. 6 at the tip end of the
The ring protrusion 12 is formed on the end face of the ring contactable with the waterproof sheet 13 therebetween.

When the microphone cover 10 is fitted in the recess 5, each of the folds 11 is in pressure contact with the inner surface of the recess 5, and each fold 11 seals.
Since the microphone 6 is press-fitted into the microphone cover 10, the rib 4 and the microphone cover 10 are in close contact with each other, the ring-shaped ridge 12 is pressed against the waterproof sheet 13, and the ring-shaped ridge 12 also seals. Done. Therefore, rainwater does not enter from between the rib 4 and the microphone cover 10 and from between the microphone cover 10 and the microphone 6.

Further, it is not necessary to form a screw hole in the rib 4, and the thickness may be thin. Therefore, shrinkage at the base of the rib 4 is unlikely to occur, and the influence of shrinkage on the surface of the front panel 2 is unlikely to occur.

Needless to say, the present invention can be applied not only to mobile phones but also to various portable electronic devices.

[0018]

As described above, according to the present invention, the microphone mounting portion can have a splash-proof structure and the microphone can be simply press-fitted into the microphone cover, so that the assembling work is easy. Be effective.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a conventional example.

FIG. 3 is a perspective view of a mobile phone which is one of the objects of the present invention.

[Explanation of symbols]

 1 Mobile Phone 2 Front Panel 3 Through Hole 4 Rib 5 Recess 6 Microphone 7 Push Cover 8 Screw 10 Microphone Cover 11 Folds 12 Ring Ridge 13 Waterproof Sheet

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location H05K 7/12 X 7301-4E (72) Inventor Takeshi Sato 3-14-20 Higashi-Nakano, Nakano-ku, Tokyo No. Kokusai Electric Co., Ltd. (72) Inventor Ryuichi Takahashi 3-14-20 Higashi-Nakano, Nakano-ku, Tokyo Kokusai Electric Co., Ltd.

Claims (1)

[Claims] 1. A microphone mount for a portable electronic device, characterized in that a microphone cover made of high-elasticity resin is press-fitted into a recess formed in a case of the portable electronic device, and the microphone is press-fitted into the microphone cover. Construction.