JP2003102087A - Speaker, module using the same, and electronic device employing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker used for an information communication device, and a module and an electronic device mounted with the speaker and to solve the tasks of enhancing the sound pressure level of the electronic device and downsizing the electronic device. SOLUTION: An elastic body 35 is coupled to the outer circumferential part of a diaphragm 27 and the speaker is coupled to the electronic device via the elastic body 35 so as to reduce the weight of a vibration mass, an opposite phase component sound and ensure the amplitude of the diaphragm 27, thereby enhancing the sound pressure level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker, a module using the speaker, a portable telephone device or a communication device using the speaker, and an electronic device such as a personal computer and a game machine.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS.

FIG. 5 is a sectional view of a conventional speaker, and FIG. 6 is a partial sectional view for explaining a mounting state of a portable telephone device equipped with the speaker.

As shown in FIG. 5, the magnetized magnet 1 is sandwiched between the upper plate 2 and the yoke 3 to form an inner magnet type magnetic circuit 4. The frame 6 was coupled to the yoke 3 of the magnetic circuit 4. The suspension 14 is adhered to the peripheral portion of the frame 6, and the voice coil 8 connected to the suspension 14 is attached to the magnetic circuit 4.
The magnetic gap 5 of FIG.

FIG. 6 shows a state in which the speaker constructed as shown in FIG. 5 is mounted on a mobile phone unit, and a display unit 12 is connected to an outer case 11 of the mobile phone unit.
The speaker 10 is directly connected to the exterior case 11 on the side of 2, and the operation portion 13 is connected to the side of the exterior case 11 to form a main portion thereof.

[0006]

However, since the above-mentioned speaker is directly connected to the outer case 11 of the portable telephone device and is used as a diaphragm, the entire outer case 11 is added to the mass of the vibration system and becomes heavy. Moreover, since the entire outer case 11 is vibrated, the sound of the antiphase component is also radiated at the same time. Therefore, there has been a problem in that the weight of the vibration system is increased and the sound pressure level is lowered due to cancellation by the antiphase component sound.

The present invention solves the above problems and provides an excellent speaker capable of improving the sound pressure level.

[0008]

In order to solve the above problems, the present invention has the following constitution.

According to a first aspect of the present invention, there is provided a magnetic circuit, a voice coil fitted in a magnetic gap of the magnetic circuit, a diaphragm attached to the voice coil, and an elastic body on an outer peripheral portion of the diaphragm. It is configured by combining. As a result, since the elastic body can be connected to the outer case of the mobile phone device, the effect of the elastic body can reduce the weight of the vibration system, reduce the antiphase component sound, and secure the amplitude of the diaphragm. The effect that the level is improved can be obtained.

According to the second aspect of the present invention, a foam is used as the elastic body. As a result, since the foam can be combined with the outer case of the mobile phone device, it is possible to reduce the weight of the foam and secure the amplitude of the diaphragm, and to achieve a significant improvement in sound pressure level. To be

According to a third aspect of the present invention, rubber is used as the elastic body. As a result, since it can be combined with the outer case of the mobile phone device via this rubber, the amount of amplitude of the diaphragm can be secured, and the effect that the sound pressure level is improved and the waterproof effect is also obtained. To be

According to a fourth aspect of the present invention, a cloth is used as the elastic body. This allows
Since it can be connected to the outer case of the mobile phone device through this cloth, it is possible to secure a large amplitude amount of the diaphragm, and to obtain a significant improvement in sound pressure level, while also having a waterproof effect. To be

According to the invention of claim 5 of the present invention, the diaphragm is configured to be substantially flat. As a result, the diaphragm can be used as a part of the outer case of the mobile phone device, and the mobile phone device can be downsized and the design flexibility can be improved.

According to a sixth aspect of the present invention, the diaphragm material is made of a transparent material. As a result, this diaphragm can be used as a part of the exterior case of a mobile phone device, and even if the display section is designed on the lower side of this diaphragm, the display section can be seen through the transparent diaphragm. In addition, it is possible to obtain the effect of reducing the size of the mobile phone device and improving the freedom of design.

According to a seventh aspect of the present invention, the speaker according to any one of the first to sixth aspects is provided adjacent to the display section, and the front surface of the display section is covered with the diaphragm of the speaker to mount the module. It is composed. As a result, it is possible to obtain the effect that the display unit and the speaker are downsized and integrally configured.

The invention according to claim 8 of the present invention constitutes an electronic apparatus comprising the module according to claim 7 and an operating section. As a result, the operation and effect that the display unit, the operation unit, and the speaker are downsized and integrally configured can be obtained.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) Hereinafter, Embodiment 1 will be used to describe the invention of claim 1 of the present invention.

FIG. 1 is a sectional view of a speaker according to an embodiment of the present invention.

As shown in FIG. 1, a magnetized magnet 21 is sandwiched between an upper plate 22 and a yoke 23 to form an inner magnet type magnetic circuit 24. A frame 26 is coupled to the yoke 23 of the magnetic circuit 24. A voice coil 28 is attached to the peripheral edge of the frame 26 by a suspension 34 and a magnetic gap 25 of the magnetic circuit 24.
And the diaphragm 2
7 and 7 are glued together. The elastic body 35 is connected to the outer peripheral portion of the diaphragm 27.

With this configuration, when the speaker is attached to the mobile phone device, the speaker can be connected to the outer case of the mobile phone device through the elastic body 35 on the outer peripheral portion of the diaphragm 27, so that the effect of the elastic body 35 causes vibration. The system mass can be reduced, the antiphase component sound can be reduced, the diaphragm amplitude can be secured, and the sound pressure level can be improved.

(Second Embodiment) The second embodiment of the present invention will be described below with reference to the second aspect of the present invention. The difference from the first embodiment is that the elastic body 35 coupled to the outer peripheral portion of the diaphragm 27 is made of foam. As a result, similarly to the first embodiment, it is possible to secure the amplitude amount of the diaphragm 27 by the effect of this foam, and the diaphragm 27 can freely vibrate. In addition, the sound pressure level can be further improved by reducing the weight of the foam.

(Third Embodiment) The third embodiment of the present invention will be described below with reference to the present invention. The difference from the first embodiment is that the elastic body 35 coupled to the outer peripheral portion of the diaphragm 27 is made of rubber. As a result, similarly to the first embodiment, the amount of amplitude of the diaphragm 27 can be secured by the effect of this rubber, and the diaphragm 27 can freely vibrate. Further, due to the waterproof effect of rubber, it is possible to realize waterproofing while improving the sound pressure level.

(Fourth Embodiment) The fourth embodiment of the present invention will be described below. FIG. 2 shows a cross-sectional view of the speaker according to the embodiment of the present invention. The difference from the first embodiment is that the elastic body 35 coupled to the outer peripheral portion of the diaphragm 27 is made of cloth. Thereby, the first embodiment
Similarly, due to the effect of this cloth, the amplitude amount of the diaphragm 27 can be secured, and the diaphragm 27 can freely vibrate. Further, by ensuring the waterproof effect and the large amplitude amount by the cloth, it is possible to realize the waterproof property while significantly improving the sound pressure level.

(Fifth Embodiment) The fifth embodiment of the present invention will be described below with reference to the fifth embodiment of the present invention. The difference from the first embodiment is that the diaphragm 27 has a substantially flat shape. As a result, the diaphragm 27 can be used as a part of the exterior case of the mobile phone device, and the mobile phone device can be downsized and the degree of freedom in designing can be improved.

(Sixth Embodiment) The sixth embodiment of the present invention will be described below with reference to the sixth embodiment. The difference from the first embodiment is that the diaphragm 27 is made of a transparent material. This allows
The diaphragm 27 can be used to design as a part of the outer case of the mobile phone device, and even if the display section is designed under the diaphragm 27, the display section can be seen through the transparent diaphragm. It is possible to reduce the size of the mobile phone device and improve the degree of freedom in design.

(Seventh Embodiment) The seventh embodiment of the present invention will be described below. FIG. 3 is a partial cross-sectional view illustrating a module equipped with a speaker according to an embodiment of the present invention. FIG. 3 shows a module 14 including a display unit 12 and a speaker 10. The speaker diaphragm 27 according to claim 1 is arranged on the front surface of the display unit 12 so as to cover the display unit 12. The area of the display unit 12 can be effectively used in the height direction, and the display unit 12 is seen through the transparent diaphragm 27.
Can be seen. Also, this transparent diaphragm 2
It is also possible to use 7 as a protective panel for the display unit 12. With this configuration, the components can be arranged not only in the lateral direction but also in the height direction, so that the sound pressure level of the mobile phone device using the module 14 can be improved and the size can be reduced. It is possible to realize greater flexibility in design and design.

Further, by modularizing in this way, it becomes possible to reduce the number of steps in the production of electronic equipment and rationalize the stage of parts distribution, thus realizing cost reduction.

(Embodiment 8) Hereinafter, the invention of claim 8 of the present invention will be described with reference to Embodiment 8. FIG. 4 is a partial cross-sectional view illustrating a mobile phone device equipped with a module according to an embodiment of the present invention. As shown in FIG. 4, the outer case 1 of the mobile phone device.
1, the module 14 and the operation unit 13 described in the seventh embodiment are combined with each other. Here, this speaker 10
The diaphragm 27 is a module which is arranged and mounted so as to cover the display unit 12, and the area of the display unit 12 can be effectively utilized in the height direction and is transparent.
The display part 12 can be seen through. With this configuration, the components can be arranged not only in the lateral direction but also in the height direction, so that the sound pressure level of the mobile phone device can be improved, and the size and flexibility of the design can be improved. Improvement can be realized.

Note that this structure can be widely applied to electronic devices such as communication devices, game devices, televisions, personal computers, and navigation devices.

[0031]

As described above, the speaker of the present invention is constructed by connecting the elastic body to the outer peripheral portion of the diaphragm. As a result, since the elastic body can be connected to the exterior case of the mobile phone device, the weight of the vibration system can be reduced, the antiphase component sound can be reduced, the amplitude of the diaphragm can be secured, and the sound pressure level can be improved. be able to.

As described above, the present invention can provide an excellent speaker capable of improving the sound pressure level even if the speaker or the portable telephone device is miniaturized, and its industrial value is extremely large. Is.

[Brief description of drawings]

FIG. 1 is a sectional view of a speaker according to an embodiment of the present invention.

FIG. 2 is a sectional view of a speaker according to another embodiment of the present invention.

FIG. 3 is a sectional view of a module according to an embodiment of the present invention.

FIG. 4 is a sectional view of a mobile phone device according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional speaker

FIG. 6 is a cross-sectional view of a conventional mobile phone device.

[Explanation of symbols]

21 magnet 22 Upper plate 23 York 24 Magnetic circuit 25 magnetic gap 26 frames 27 diaphragm 28 voice coils 34 suspension 35 Elastic body

Claims (8)

[Claims] 1. A speaker comprising a magnetic circuit, a voice coil fitted in a magnetic gap of the magnetic circuit, and a diaphragm attached to the voice coil, wherein an elastic body is coupled to an outer peripheral portion of the diaphragm. Speaker. 2. A foam body is used as the elastic body.
The described speaker. 3. The speaker according to claim 1, wherein rubber is used as the elastic body. 4. The speaker according to claim 1, wherein cloth is used as the elastic body. 5. The speaker according to claim 1, wherein the diaphragm has a substantially flat shape. 6. The speaker according to claim 1, wherein the diaphragm material is a transparent material. 7. The method according to any one of claims 1 to 6, which is adjacent to the display unit.
A module provided with any one of the speakers, wherein the front surface of the display unit is covered with a diaphragm of the speaker. 8. An electronic device comprising the module according to claim 7 and an operation unit.