JP2545050Y2 - Speaker mounting structure for electronic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a speaker mounting structure in an electronic device.

[Technical background of the invention]

FIG. 4 is an assembled perspective view showing a conventional speaker mounting structure in a desk phone.

An annular rib 3 is integrally formed on the back surface 2a of the face plate 2 of the telephone housing 1, and bosses 5,5 having screw holes 4,4 are provided outside the rib 3. Have been. On the other hand, on the surface 2b of the face plate 2 corresponding to the rib 3, as shown in FIG.
Further, a sound hole 7 is formed in a portion of the recess 6 surrounded by the rib 3. In such a telephone, the dustproof net 8 is accommodated in the rib 3 on the back surface 2a, and the speaker 9 is accommodated on the dustproof mesh 8 as well. The movement of the speaker 9 in the lateral direction is restricted by the inner wall surface 3a of the rib 3. The tongue 10 and the hole 11 are provided on both sides of the speaker 9 positioned on the rib 3 in this manner.
Are provided such that the tongue pieces 10 abut against the peripheral edge of the back of the speaker 9. The speaker 9 and the face plate 2 are connected to the holes 1
Screws 13, 13 inserted from 1, 11 are screwed into screw holes 4, 4 of bosses 5, 5 to be integrally fastened.

[Problems of background technology]

By the way, in such a conventional mounting structure, as shown in FIG. 5, the boundary between the sound hole 7 and the concave portion 6, that is, the shape of the speaker 9 is easily noticeable, which is not preferable in appearance. Further, since the contact area between the speaker 9 and the face plate 2 is reduced by the sound holes 7 formed in the outer face plate 2, the speaker 9 vibrates when the speaker 9 is driven,
There is a possibility that chattering noise is generated, and there is also a problem in mounting workability.

Furthermore, since the extremely near sound emitting surface of the speaker 9 is covered by the portion of the face plate 2 that partitions the plurality of sound holes 7, 7, there is a possibility that the sound output of the speaker 9 may be adversely affected.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has a speaker mounting structure for an electronic device in which the vibration and the sound output are adversely affected as much as possible without impairing the speaker mounting workability, and the shape of the speaker is less likely to appear in appearance. The purpose is to provide.

[Outline of the invention]

Therefore, in the present invention, a plate having a size that can cover an apparent sound hole formation area formed by design including sound holes, and having a positioning hole and an annular step portion is attached to the face plate of the housing. And a dust screen covering the apparent sound hole forming area is sandwiched between the plate body and the face plate of the housing, and a speaker is housed in the positioning hole of the plate body. The above object is achieved by pressing and holding the entire peripheral edge of the sound emitting surface on the step.

[Example of the invention]

Hereinafter, the present invention will be described with reference to an embodiment shown in the drawings.

FIG. 1 is an assembled perspective view showing an embodiment in which the speaker mounting structure according to the present invention is employed in a desk phone.

A plurality of sound holes 23 are formed in the face plate 22 of the telephone housing 21 within a rectangular range. Outside the formation area 24 of the sound holes 23, bosses 26 having screw holes 25 are integrally provided. In this mounting structure, the dustproof net 27 is formed larger than the area 24 where the sound holes 23 are formed.
Notches 28, 28 are formed at the corners of the dustproof net 27. Furthermore, in this mounting structure, a plate body 29 formed separately from the face plate 22 is used. The plate body 29 has guide holes 30, 30 formed at opposing side ends. Further, a circular positioning hole 33 having a size corresponding to the sound emission surface of the speaker 32 is formed at the center thereof, and a step portion 34 is formed on the inner periphery of the positioning hole 33.
The step portion 34 has an annular shape over the entire inner periphery of the positioning hole 33, and its front surface is located on the same plane as the front surface of the plate body 29, as shown in FIG. ing. On the other hand,
The front surface of the plate body 29 is a smooth flat surface. Further, in this mounting structure, as mounting means of the speaker 32 and the plate body 29, two mounting brackets (pressing members) 37, 37 each having a tongue piece 35 and a hole 36 at both ends, and two screws 38, 38 have been adopted.

When the speaker 32 is attached to the face plate 22, first, the dust-proof net 27 is placed over the entire region 24 on which the sound holes 23 are formed on the back surface 22a of the face plate 22, and then the guide holes 30, 30 of the plate body 29 are placed. The bosses 26 of the face plate 22 are fitted respectively. Thus, the dustproof net 27 is sandwiched between the face plate 22 and the plate body 29. Thereafter, the speaker 32 is placed in the positioning hole 33 of the plate 29, and the speaker 32 is held by the plate 29.

Between the speaker 32 positioned on the plate body 29 and the plate body 29, mounting brackets 37, 37 are respectively disposed on both sides, and the holes 36, 36 of these mounting brackets 37, 37 form a plate. body
Screw holes 25, 2 of bosses 26, 26 fitted into 29 guide holes 30, 30
By screwing screws 38, 38 into 5, the mounting brackets 37, 37
Of the frame of the speaker 32, the speaker 32, the plate body 29, the dustproof net 27 and the face plate
22 are integrally fixed as shown in FIG.

When the speaker 32 is mounted on the back surface 22a of the face plate 22 in this way, the plurality of rectangular sound holes 23 are all covered with the dustproof net 27 as shown in FIG.
Of these sound holes 23, a portion in a circle corresponding to the sound emission surface of the speaker 32 is used as a sound hole, and the remaining portion forms an apparent sound hole. Further, as shown in FIG. 2, the entire periphery of the frame of the sound emission surface of the speaker 32 is pressed and held by an annular step 34 provided on the plate 29, and the entire front surface of the plate 29 is Since the speaker 32 is pressed by the back surface 22a, vibration of the speaker 32, the plate body 29, and the face plate 22 can be suppressed as much as possible even when the speaker 32 is driven. At this time, the dustproof net 27 interposed between the plate body 29 and the face plate 22 is
It functions as a buffer for unnecessary vibration.

The above embodiment shows an example in which the present invention is applied to a desk phone. However, it goes without saying that the present invention is not limited to a desk phone and can be applied to an electronic device having another speaker such as an audio device.

[Effect of the invention]

As described above, in the mounting structure of the speaker in the electronic device according to the present invention, the apparent sound hole forming area formed on the face plate of the housing is designed as a hole, and the sound holes and the apparent sound hole are formed. Since the sound holes are covered with a dustproof net, the shape of the speaker is not noticeable. Further, since the boss is inserted into the guide hole of the plate and the speaker is accommodated in the positioning hole of the plate, movement in the plane direction between the face plate, the plate and the speaker is restricted. ,
They can be easily positioned. Moreover,
A pressing member is provided at the tip of the boss inserted into the guide hole of the plate, and the movement of the face plate, the plate and the speaker in directions away from each other is regulated by the pressing member. The number of parts can be reduced without impairing the mounting workability.

On the other hand, after the speaker is attached, the entire peripheral edge of the sound emission surface of the speaker is pressed and held by the annular step provided on the plate, and the plate is placed on the back surface of the face plate via the speaker. Since the speaker is pressed, vibration of the speaker can be suppressed as much as possible. In addition, since the step of the plate disposed close to the speaker is formed in an annular shape to be in contact with the entire periphery of the frame of the sound emission surface of the speaker, that is, the step is not configured to cover the sound emission surface of the speaker. In addition, the adverse effect of the audio output of the speaker can be reduced as much as possible.

[Brief description of the drawings]

1 to 3 show an example in which a speaker mounting structure in an electronic device according to the present invention is applied to a desk phone. FIG. 1 is an assembled perspective view showing the mounting mode of the speaker, and FIG. FIG. 3 is a front side view of the speaker mounting portion after assembly, FIGS. 4 and 5 show examples of a conventional speaker mounting structure in a desk phone, and FIG. FIG. 5 is a front elevational view of a speaker mounting portion showing a mounting state of the speaker. 22 ... face plate, 22a ... back surface, 23 ... sound hole, 24 ... formation area, 27 ... dustproof net, 29 ... plate body, 32 ... speaker, 33 ...
... Positioning holes, 34 ... Steps, 37 ... Pressing members.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Koike 3-1, 1-1 Asahigaoka, Hino City Inside Toshiba Hino Factory Co., Ltd. (56) Reference Reference −8141 (JP, U) Jiko 49-35789 (JP, Y1)

Claims (1)

(57) [Scope of request for utility model registration] 1. A speaker mounting structure for an electronic device in which a speaker is attached to a portion of a face plate of the electronic device with a sound hole via a dustproof net, wherein the sound hole forming a sound emission hole for an acoustic wave from the speaker is provided. A boss for mounting the speaker planted on the face plate of the perforated electronic device, a guide hole for inserting the boss is formed, and a positioning hole for accommodating the speaker;
A plate body disposed on the inner periphery of the positioning hole and having a stepped portion provided annularly so as to abut on the entire periphery of the frame of the sound emission surface of the speaker; and the plate body to which the speaker is attached. A dust-proof net interposed between the face plate and the filter to prevent unnecessary vibration between the plate body and the face plate against vibration of a speaker; A pressing member that presses against the frame of the speaker placed on the step portion of the plate body with the guide hole fitted therein, and presses the plate body against the face plate via the speaker. A speaker mounting structure in an electronic device, characterized by: