JP2007027923A - Mounting structure of exciter for panel type speaker and exciter for panel type receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure the waterproofness inside a casing with respect to a mounting structure of an exciter for a panel type speaker or an exciter for a panel type receiver, especially, a waterproof mounting structure in a small portable device such as a cellular phone. <P>SOLUTION: In the mounting structure of an exciter for a panel type speaker and an exciter for a panel type receiver, a panel used as the diaphragm of the speaker or the receiver is supported on the casing by a suspension with elasticity, a gap between the casing or the sub-frame of the device and the panel is sealed using a thin film such as a waterproof film to form a waterproof region in the inside of the device, and the suspension and the exciter are housed in the waterproof region. A casing or the panel for protecting the film is provided on a thin film such as the waterproof film. The protecting casing is a sub-frame provided separately from the casing of the device. The thin film such as the waterproof film is also used as a fastening member being a base for sandwiching an elastic member of the suspension. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mounting structure for an exciter for a panel type speaker or an exciter for a panel type receiver, and more particularly to a waterproof mounting structure in a small portable device such as a mobile phone.

  In recent small portable devices such as mobile phones, there are many panel type speakers or panel type receivers that use a transparent panel provided as a speaker or receiver diaphragm for protecting display devices such as liquid crystal devices. It has been used. With respect to devices using such panel type speakers or panel type receivers, the focus was on countermeasures against impacts. In order to avoid the destruction of the exciter (consent with the actuator) due to impact, a proposal has been made to dispose impact absorbing materials on both plate surfaces of the piezoelectric diaphragm (see, for example, Patent Document 1).

However, in equipment using panel-type speakers or panel-type receivers, in addition to the impact problem, it is difficult to satisfy both the sound pressure level and waterproofness depending on the exciter mounting structure. was there.
This problem will be described with reference to FIGS.
FIG. 5 is a diagram of a cellular phone using a panel type speaker or a panel type receiver. FIG. 5A is a plan view of the cellular phone 30 using a panel type speaker or a panel type receiver. A panel 20 serving also as a diaphragm of a type speaker or a panel type receiver is provided. The panel 20 is made of a transparent material such as an acrylic material so that a liquid crystal display device 32 provided at the rear portion of the panel can be seen through. The exciter 22 is a liquid crystal display at the rear portion of the panel in the same manner as the liquid crystal display device 32. It is attached above the device 32.

5B is a cross-sectional view taken along line AA ′ of FIG. 5A. The panel 20 is supported by the casing 18 by a suspension 36 as a support member, and the liquid crystal display device 32 is formed by a gasket 34 such as urethane foam. 20 is supported. Further, an exciter 22 is attached to the panel 20 to vibrate the panel 20 and generate sound.
It is the suspension 36 that becomes a problem. This problem will be described with reference to FIG. 6 which is a conventional example of an enlarged view of part B in FIG.
In the following drawings, the same members are denoted by the same numbers.

6, the suspension 36 includes a continuous foam 26, a base material 24 such as PET sandwiching the continuous foam 26, and adhesive materials 12 and 16 such as acrylic.
If the suspension 36 is made of a relatively hard material such as an independent foam or silicon rubber, the panel 20 is rigidly supported by the casing 18, and the vibration of the panel 20 is hindered and the sound pressure is lowered. That is, if an attempt is made to realize a waterproof structure by using a rubber ring for a suspension as used in a waterproof structure of a wristwatch, the sound pressure is lowered and the speaker function is impaired. Therefore, it is desirable that the suspension 36 be made of a soft material such as a continuous foam that does not inhibit the vibration of the panel 20.
However, since the continuous foam has a structure in which a series of bubbles are connected, moisture enters through the bubbles and does not have a waterproof structure. Therefore, the moisture indicated by the line 28 in FIG. 6 passes through the continuous foam 26 from the gap between the casing 18 and the panel 20 and enters the inside of the casing.
Moisture that has entered through the side of the suspension 36 causes water droplets and fogging on the internal liquid crystal screen and panel, and may adversely affect other electronic components such as exciters.
As described above, the conventional mounting structure of the exciter for the panel type speaker and the exciter for the panel type receiver has a problem that the waterproofness of the device cannot be maintained if the sound pressure is increased.

JP 2004-104327 A

  The problem to be solved is that, in an apparatus using a panel type speaker and a panel type receiver, if the sound pressure is increased, the waterproofness of the apparatus cannot be maintained.

  The panel-type speaker exciter and panel-type receiver exciter mounting structure of the present invention is such that a panel that is a diaphragm of a speaker or receiver is supported by a casing via an elastic suspension, The gap between the subframe and the panel is sealed with a thin film such as a waterproof film to make the inside of the device a waterproof region, and the suspension and the exciter are housed in the waterproof region .

  Moreover, the mounting structure of the exciter for panel type speakers and the exciter for panel type receiver of the present invention is characterized in that a casing or the panel for protecting the film is provided on a thin film such as the waterproof film.

  The panel speaker exciter and panel receiver exciter mounting structure of the present invention is characterized in that a fastening member, which is a base material sandwiching the elastic material of the suspension, is also used as a thin film such as the waterproof film.

  The panel speaker exciter and panel receiver exciter mounting structure of the present invention is characterized in that a continuous foam is used as an elastic material for the suspension.

  Moreover, the mounting structure of the exciter for panel type speaker and the exciter for panel type receiver of the present invention is such that the casing for protecting the thin film such as the waterproof film is a subframe provided separately from the casing of the device. It is characterized by.

According to the present invention, since the panel support itself is made of a soft material such as a conventional continuous foam, the acoustic characteristics are not deteriorated, and the waterproof property inside the housing is achieved by the film material or the base material disposed between the housing and the panel. Can be secured.
Further, by protecting the waterproof film material or the base material with a casing or a panel so that the waterproof film material or the base material is not exposed on the surface of the device, mechanical damage to the waterproof film material or the base material can be prevented.
In addition, a panel-type speaker exciter and a panel type with a waterproof structure can be provided at low cost because the portions of fastening members made of a PET base material that are attached to apply acrylic adhesive on the top and bottom of the continuous foam material are arranged for waterproofing. An exciter mounting structure for the receiver can be realized.

  The panel-type speaker exciter and panel-type receiver exciter mounting structure of the present invention is such that a panel, which is a speaker or receiver diaphragm, is supported by a casing via an elastic suspension, and the casing or sub A gap between the frame and the panel was sealed with a thin film such as a waterproof film to make the inside of the device a waterproof region, and the suspension and the exciter were housed in the waterproof region. Moreover, the housing | casing or said panel which protects this film was provided on thin films, such as the said waterproof film. Furthermore, the casing to be protected is a subframe provided separately from the casing of the device. Furthermore, a fastening member which is a base material sandwiching the elastic material of the suspension is also used as a thin film such as the waterproof film.

FIG. 1 is a partial sectional view of a first embodiment of a mounting structure of an exciter for a panel type speaker and an exciter for a panel type receiver according to the present invention. FIG. 1 is similar to FIG. It is an enlarged view of the B section of a cellular phone using a panel type receiver.
In FIG. 1, the panel 20 is supported by the casing 18 by a suspension 36 made of a continuous foam 26, a base material 24 such as PET sandwiching the continuous foam 26, and an acrylic adhesive 16. ing. Here, the base material 24 such as PET is a fastening member. An exciter 22 is attached to the panel 20 to vibrate the panel 20 and generate sound. Further, the gap between the device casing 18 and the panel 20 is sealed with a thin film 14 such as a waterproof film provided with adhesive materials 12 and 15 on both sides. The thin film 14 such as a waterproof film is provided so as to cover all four sides of the panel 20.
In addition, in order to protect the film on the thin film 14 such as a waterproof film, a panel 20 protrudes and covers the thin film 14 such as the waterproof film (left side in FIG. 1). Mechanical damage to the thin film 14 is prevented.

As described above, in the mounting structure of the present invention, the gap between the device casing 18 and the panel 20 is sealed by the thin film 14 such as a waterproof film, and the inside of the device casing 18 is a waterproof region. The exciter 22 is stored in the waterproof area. Therefore, the moisture indicated by the line 28 in FIG. 1 tries to enter from the gap between the casing 18 and the panel 20 of the device, but is not blocked by the thin film 14 such as a waterproof film and does not enter the casing 18. , Waterproof structure is realized.
On the other hand, since the panel 20 uses the continuous foam 26 as an elastic material as in the conventional case, the sound pressure as a speaker and a receiver does not decrease.
In addition, it is well known that a portable panel type speaker using an exciter can be applied to a panel type receiver with the same structure by performing electrical processing, and the exciter described in this specification is applicable to a panel type speaker. It is assumed that it can be applied to panel type receivers.
Further, with this configuration, the thin film 14 such as a waterproof film may be exposed to the outside, but by covering the thin film 14 such as the waterproof film by extending the panel 20 beyond the position of the suspension. To protect against mechanical damage.
The thin film 14 such as a waterproof film may be waterproof, and is not limited to general materials such as PI, PET, and PC.

2 is a partial sectional view of a second embodiment of the mounting structure of the exciter for panel type speaker and exciter for panel type receiver according to the present invention. FIG. 2 is similar to FIG. It is an enlarged view of the B section of a cellular phone using a panel type receiver.
2 differs from FIG. 1 in that the mechanical protection of the thin film 14 such as a waterproof film is formed by extending the casing 18 of the device in a direction overlapping the panel 20, and the panel 20 is a suspension. The point 36 is supported by the subframe 40.
Here, a device casing is generally composed of a plurality of casing parts, and a part called “subframe” in the present invention is manufactured separately from a “device casing”. "Or" casing "is not a problem. In the present specification, “subframe” and “housing” are expressed using different expressions because of the problems of die cutting and assembling at the time of manufacturing the housing.
In the second embodiment shown in FIG. 2, since the panel 20 is supported on the sub-frame 40, it is easy to remove the mold of the device casing 18, and the device can be easily assembled.

FIG. 3 is a partial cross-sectional view of a third embodiment of the mounting structure of the exciter for panel type speaker and exciter for panel type receiver according to the present invention. FIG. 3 is similar to FIG. It is an enlarged view of the B section of a cellular phone using a panel type receiver.
FIG. 3 differs from FIG. 1 in that a mechanical protection of the thin film 14 such as a waterproof film is provided in a direction that overlaps with the panel 20 and is provided with a subframe 42 that is provided separately from the housing of the device. It is a point that has been made.
Also in the third embodiment of FIG. 3, since the thin film 14 such as a waterproof film is protected by the subframe 42, the device casing 18 can be easily removed from the mold, and the device can be easily assembled. There is a similar effect.

4 is a partial sectional view of a fourth embodiment of the mounting structure of the exciter for panel type speaker and exciter for panel type receiver according to the present invention. FIG. 4 is similar to FIG. It is an enlarged view of the B section of a cellular phone using a panel type receiver.
FIG. 4 is similar to FIG. 2 except that a wide suspension 36 is used, and the fastening member 24 as a base material sandwiching the elastic material of the suspension 36 functions as a thin film such as a waterproof film. It is a point that is also used.
In the fourth embodiment shown in FIG. 4, it is possible to omit a thin film such as a waterproof film by using a waterproof film or a base material for the fastening member 24. The water resistance can be realized at a low cost without impairing the characteristics.
In addition, the effect that the device casing 18 can be easily removed and the device can be easily assembled is the same.

As described above, according to the exciter for panel type speaker and the exciter for panel type receiver according to the present invention, it is possible to ensure waterproofness inside the casing without deterioration of acoustic characteristics. Further, mechanical damage to the waterproof film material or the substrate can be prevented. Further, since the continuous foam material fastening member is disposed for waterproofing, a waterproof structure can be realized at low cost.
Furthermore, since the subframe is used, there is an effect that the housing 18 of the device can be easily removed and the device can be easily assembled.

It is a fragmentary sectional view of the 1st Example of the exciter for panel type speakers and the exciter for panel type receivers by this invention. It is a fragmentary sectional view of the 2nd Example of the exciter for panel type speakers and the exciter for panel type receivers by this invention. It is a fragmentary sectional view of the 3rd example of the attachment structure of the exciter for panel type speakers and the exciter for panel type receivers by the present invention. It is a fragmentary sectional view of the 4th example of the exciter for panel type speakers and the exciter for panel type receivers by the present invention. It is a figure of the mobile phone using a panel type speaker or a panel type receiver. It is a prior art example of the B section enlarged view of Drawing 5 (b).

Explanation of symbols

30 Equipment 20 Using Panel Speaker or Panel Receiver Panel 36 Suspension 18 Housing 14 Thin Film 24 such as Waterproof Film Fastening Member 26 Continuous Foam 40, 42, 44 Subframe 22 Exciter

Claims (5)

In the mounting structure of the exciter for panel type speaker and the exciter for panel type receiver in which the panel which is a diaphragm of the exciter for panel type speaker and the exciter for panel type receiver is supported by the casing through an elastic suspension,
The gap between the housing or sub-frame of the device and the panel is sealed with a thin film such as a waterproof film to make the inside of the device a waterproof region, and the suspension and the exciter are stored in the waterproof region An exciter for a panel-type speaker and an exciter for a panel-type receiver, characterized in that   The exciter for a panel type speaker and the exciter for a panel type receiver according to claim 1, wherein a casing or the panel for protecting the thin film such as the film is provided on the thin film such as the waterproof film. .   3. An exciter for a panel type speaker and an exciter for a panel type receiver according to claim 1 or 2, wherein a fastening member as a base material sandwiching an elastic material of the suspension is also used as a thin film such as the waterproof film. .   The exciter for panel type speaker and the exciter for panel type receiver according to at least one of claims 1 to 3, wherein the suspension uses a continuous foam as an elastic material. The panel type according to at least one of claims 2 to 5, wherein the casing for protecting the thin film such as the waterproof film is a subframe provided separately from the casing of the device. Mounting structure for exciters for speakers and panel receivers.

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