WO2005096664A1

WO2005096664A1 - Hybrid speaker and hybrid speaker unit

Info

Publication number: WO2005096664A1
Application number: PCT/JP2005/006087
Authority: WO
Inventors: Mikio Fukuda; Takeshi Takeda
Original assignee: Temco Japan Co., Ltd.
Priority date: 2004-03-31
Filing date: 2005-03-30
Publication date: 2005-10-13
Also published as: TW200539661A; JPWO2005096664A1

Abstract

A hybrid speaker and a hybrid speaker unit in which a bone conduction speaker and an air conduction speaker are compactly joined, and therefore even when an installation space is limited as in a mobile telephone, outputs of both speakers can be appropriately used functionally by using them in combination. The hybrid speaker and the hybrid speaker unit are characterized by using a bone conduction speaker (1) and an air conduction speaker (2), and preferably, the hybrid speaker (1) and the air conduction speaker (2) are integrally arranged on the same axis, and the air conduction speaker (2) is embedded in a recess (9) formed in the rear side of a yoke (3) of the bone conduction speaker (1).

Description

Hybrid speaker and hybrid speaker unit

Technical field

The present invention relates to a hybrid speaker and a hybrid speaker unit, more specifically, a bone-conduction speaker and an air-conducting speaker that are compactly integrated, and incorporated into a mobile phone or the like to produce a bone-conducting sound and an air-conducting sound. The present invention relates to a hybrid speaker and a hybrid speaker unit capable of both outputs.

Background art

[0002] Bone conduction speakers are used for use under high noise and for hearing-impaired people. When this bone conduction speaker is incorporated into a mobile phone and used, it can be used with almost the same function as an air conduction speaker currently in use, but the sound quality is slightly inferior.

[0003] On the other hand, users are demanding thinner models with higher sound quality regardless of bone conduction speakers or air-conducting speakers. However, in order to achieve higher-quality sound output on a mobile phone using a bone conduction speaker, it is necessary to use air-conducting speakers separately from the bone conduction speaker and use them functionally. It is practically difficult to incorporate two speakers into a narrow space of a mobile phone that is becoming thinner.

Patent Document 1: JP 2003-87886 A

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-348208

Patent Document 3: JP 2004-064101 A

Disclosure of the invention

Problems to be solved by the invention

[0005] As described above, when a bone conduction speaker and an air-conducting speaker are used together in a conventional mobile phone or the like, a large space is required for installation of both speakers, and thus the installation space is particularly limited. In the case of a thin mobile phone, it was practically difficult to adopt a configuration using both speakers together.

[0006] Therefore, the present invention provides a bone conduction speaker and an air conduction speaker that are compactly combined, It is an object of the present invention to provide a hybrid speaker and a hybrid speaker unit that can use both speakers functionally to selectively use the output even when the installation space is limited like a mobile phone. Means for solving the problem

[0007] The present invention for solving the above-mentioned problems is characterized in that a bone conduction speaker and an air conduction speaker are integrated with each other, and preferably, the bone conduction speaker and the bone conduction speaker are integrated with each other. The air-conducting speaker is disposed coaxially and integrally with the air-conducting speaker, and the air-conducting speaker force is embedded in a recess formed on the back surface of the yoke of the bone conduction speaker.

[0008] Preferably, the bone conduction speaker is configured by fixing a vibrating plate while holding a predetermined gap to a yoke carrying a voice coil and a magnet, and the recess is stepped; The air-conducting loudspeaker includes a magnet fixed to a central portion of the inner bottom surface of the recess, a voice coil supported by a diaphragm fixed on a step of the recess and surrounding the magnet, and a voice coil mounted on the diaphragm. And an equalizer installed in the

[0009] A speaker unit according to the present invention for solving the above-mentioned problem is characterized in that the hybrid speaker according to any one of claims 1 to 5 is provided by connecting the vibration plate of the bone conduction speaker to an inner surface of a cut case. , And the equalizer of the air-conducting speaker is housed in the unit case by being fixed to the inner surface on the opposite side of the unit case via an elastic body. Preferably, the unit case is supported by a speaker holder made of an elastic material.

[0010] Further, the speaker unit according to the present invention for solving the above-mentioned problems is provided with a cut case in which the interior is partitioned into a space for a bone conduction speaker and a space for an air-conducting speaker by a partition plate. A bone conduction speaker is installed in the space for the conduction speaker by fixing the vibration plate to the partition plate, and the air conduction speaker is placed in the space for the conduction speaker, and the diaphragm surface is placed in the unit case. It is installed by fixing it to the inner surface of the car.

[0011] Further, the speaker unit according to the present invention for solving the above-mentioned problem is characterized in that the vibration of the bone conduction speaker is obtained by fixing a vibrating plate while maintaining a predetermined gap in a yoke carrying a voice coil and a magnet. Air-conducting speaker with air-conducting speaker incorporated in plate The case is fixed.

[0012] In this case, preferably, the bone conduction speaker is supported by a speaker holder made of an elastic material, and the speaker holder includes a supporting portion of the bone conduction speaker and a vibration plate exposing portion of the bone conduction speaker. The air conduction speaker case is fixed to the vibration plate of the bone conduction speaker through the vibration plate exposure portion.

The invention's effect

[0013] In the hybrid speaker and the hybrid-type speaker unit according to the present invention, since the bone conduction force and the air-conducting speaker are compactly integrated, the installation space is limited and the installation space is limited. It is suitable for use in mobile phones and the like.

[0014] When the hybrid speaker according to the present invention is used in, for example, a mobile phone, the air conduction type speech force and the bone conduction speaker can be functionally switched, so that the bone conduction sound output is selected under high noise. However, in places where there is not much external noise, it is extremely suitable to be able to always output high-quality sound depending on the situation, such as selecting air-conducted sound output for making higher-quality calls. .

BEST MODE FOR CARRYING OUT THE INVENTION

[0015] The hybrid speaker according to the present invention is characterized in that the bone conduction speaker and the air-conducting speaker are arranged integrally, preferably coaxially and integrally. Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. First, a first embodiment of the hybrid speaker according to the present invention shown in FIG. 1 will be described. That is, a recess 9 is provided on the back surface of the yoke 3 of the bone conduction speaker 1, and the air-conducting speaker 2 is embedded therein.

[0016] The bone conduction speaker 1 is generally configured such that a vibration plate 6 is fixed to a yoke 3 carrying a voice coil 4 and a magnet 5 while maintaining a predetermined gap. , The thick plate yoke 8 is fixed. The bone conduction force 1 shown in FIG. 1 is a so-called inner magnet type in which the magnet 5 is arranged outside the voice coil 4, that is, a so-called outer magnet type magnet is arranged inside the voice coil 4. It can also be.

The air-conducting speaker 2 is provided with a stepped recess 9 on the back side of the yoke 3 of the bone conduction speaker 1, and a magnet 10 is fixed to the center of the inner bottom surface of the recess 9, and is supported by the diaphragm 12. Ta Voice Co The coil 11 is arranged so as to surround the magnet 10, and the outer peripheral edge of the diaphragm 12 is fixed on the step of the recess 9. An equalizer 13 is fixed on the diaphragm 12.

[0018] The hybrid speaker having a powerful structure is usually used by being appropriately housed in a unit case. For example, when housed in a box-shaped unit case 14 as shown in FIG. 2, the bone conduction speaker 1 is installed there by fixing the plate yoke 8 of the vibrating plate 6 to the inner surface of the unit case 14. You. The vibration of the vibrating plate 6 based on the force voice signal is transmitted to the entire unit case 14, and is output by the vibration of the unit case 14.

The air-conducting speaker 2 has an equalizer 13 installed on an inner surface of the unit case 14 opposite to a surface on which the plate yoke 8 of the bone conduction force 1 is fixed via an elastic body 15. Is done. A sound emission hole 16 communicating with the elastic member 15 between the elastic member 15 and the unit case 14 is formed.

As described above, the elastic body 15 functions as a damping material for stabilizing the characteristics of the bone conduction speaker 1 that only forms the sound conducting hole of the air-conducting speaker 2. A lead wire outlet 17 is formed in the unit case 14, and lead wires 18 and 18a from the bone conduction speaker 1 and the air-conducting speaker 2 are drawn out therefrom.

In a more preferred embodiment, the unit case 14 is supported by a speaker holder 19 made of an elastic material having vibration damping properties, such as rubber or plastic, in consideration of assembling into a mobile phone. As shown in FIG. 3, the speaker holder 19 is provided with fixing projections 19b each having a circular hole formed on the upper and lower sides of a container 19a for accommodating the unit case 14.

When the speaker unit according to the first embodiment is incorporated into a mobile phone by using the speaker holder 19, the phone case 20 has a unit installation opening 21 formed therein. A female screw cylinder 22 is erected on the inner edge.

The speaker holder 19 supporting the unit case 15 is installed in the unit installation opening 21 by inserting the female screw cylinder 22 into the circular hole of the fixing projection 19a and screwing it.

Next, a second embodiment of the speaker unit according to the present invention will be described with reference to FIG. 5 and FIG. In the second embodiment, a bone conduction is performed by a partition plate 25 inside. Unit case 2 divided into speaker space 26 and air-conducting speaker space 27

4, a bone conduction speaker 1 and an air conduction speaker 2 are installed.

[0025] In the second embodiment, the bone conduction speaker 1 has the same configuration as described above.

It is not necessary to provide a recess on the back side of the yoke 3. As the air-conducting speaker 2, it is preferable to use a general dynamic type speaker.

[0026] The bone conduction speaker 1 is arranged in the bone conduction speaker space 26, and is installed there by fixing the plate yoke 8 of the vibration plate 6 to the partition plate 25. Vibration of the vibration plate 6 based on the audio signal is transmitted from the partition plate 25 to the entire unit case 24, and is output as bone conduction sound due to the vibration of the unit case 24.

On the other hand, the air-conducting speaker 2 is fixed to the inner surface in the air-conducting speaker space 27. A sound emission port 28 is appropriately formed in a fixed portion on the inner side surface of the unit case.

[0028] A lead wire outlet 30 is formed in the unit case 24, from which lead wires 31 and 32 exiting from the bone conduction speaker 1 and the air-con- ducted speaker 2 are drawn out, respectively.

FIG. 6 shows an example of a method of incorporating the speaker unit according to the second embodiment into a mobile phone. The phone case 33 has a vibration damping property of rubber, plastic, or the like over the entire inner surface. A concave portion 35 having an elastic material 34 fixed thereto is formed, and the present speaker unit is fitted into the concave portion 35. Further, a lead wire outlet hole 36 for extracting the lead wires 31 and 32 is formed through one side surface of the elastic member 34 and the concave portion 35.

Since the present speaker unit is fitted into the recessed portion 35 via the vibrating material 34 having a vibration damping action, transmission of the vibration is suppressed, and the isolation of the telephone case 33 is ensured. Is done.

Next, a third embodiment of the speaker unit according to the present invention will be described with reference to FIGS. 7 to 9. In the third embodiment, an air-conducting speaker 2 with a built-in air-conducting speaker 2 having the same structure as described above is incorporated in the vibration plate 6 (plate yoke 8) of the bone conduction speaker 1 having the same structure as the second embodiment. The speaker case 37 is fixed. Usually, the fixation is performed by fixing a projection 38 provided at the center on the back side of the air-conducting speed force case 37 to the diaphragm (plate yoke 29) of the bone conduction speaker 16. In this case, it is preferable that the portion of the bone conduction speaker 1 is supported by a speaker holder 39 made of an elastic material having a vibration damping property such as rubber or plastic. As shown in FIG. 8, the speaker holder 39 includes a fixing projection 40 having circular holes formed on the upper and lower sides of the cylindrical base, a speaker holding portion 41 is formed on one side, and an opening is formed on the other side. 42 is formed.

The bone conduction speaker 1 is held by the speaker holding portion 41 with the plate yoke 8 facing the opening 42. Then, the projection 38 of the air-conducting speaker case 37 faces the inside of the opening 42 and is fixed to the plate yoke 8. At this time, a slight gap is maintained between the peripheral portion of the opening 42 and the facing surface of the air-conducting speaker case 37.

FIG. 9 shows an example of a method of assembling the speaker unit according to the third embodiment into a mobile phone. As in the case of the first embodiment, a unit installation opening is formed in a telephone case 20. 21 is formed, and a female screw cylinder 22 is erected on the inner edge of the unit installation opening 21.

[0035] The speaker holder 39 supporting the bone conduction speaker 1 as described above inserts the female screw cylinder 22 into the circular hole of the fixing projection 40, and screws the same. Installed in

As described above, since the speaker unit according to each embodiment uses the bone conduction speaker and the air conduction speaker, the bone conduction sound output by the bone conduction speaker and the air conduction sound output by the air conduction speaker are different. By installing an electrical or mechanical switch that switches between these speakers in the communication device to which these speakers are connected, it is possible to functionally select the audio output method according to the situation.

[0037] The power that has described the best mode for carrying out the present invention It is clear that widely different embodiments can be configured without departing from the spirit and scope of the present invention. Is not limited to that particular embodiment except as limited in

Brief Description of Drawings

FIG. 1 is a diagram showing a configuration example of a hybrid speaker according to the present invention.

FIG. 2 is a diagram showing a configuration example of a speaker unit according to the first embodiment of the present invention. FIG. 3 is a view showing a shape of a speaker holder used in the speaker hood according to the first embodiment of the present invention.

[4] FIG. 4 is a diagram showing a method of incorporating the speaker unit according to the first embodiment of the present invention into a mobile phone.

[5] FIG. 5 is a diagram illustrating a configuration example of a speaker unit according to a second embodiment of the present invention. [6] Fig. 6 is a diagram showing a method of incorporating the speaker unit according to the second embodiment of the present invention into a mobile phone.

[7] FIG. 7 is a diagram showing a configuration example of a speaker unit according to a third embodiment of the present invention.

FIG. 8 is a diagram showing a shape of a speaker holder used in a speaker unit according to a third embodiment of the present invention.

[9] FIG. 9 is a diagram showing a method of incorporating the speaker unit according to the third embodiment of the present invention into a mobile phone.

Claims

The scope of the claims

[1] A hybrid speaker characterized by integrating a bone conduction speaker and an air conduction speaker.

[2] The hybrid speaker according to claim 1, wherein the bone conduction speaker and the air-conducting speaker are integrally disposed coaxially.

3. The hybrid speaker according to claim 2, wherein the air-conducting speaker is embedded in a recess formed on a back surface of the yoke of the bone conduction speaker.

[4] The recess is stepped, and the air-conducting speaker is supported by a magnet fixed to the center of the inner bottom surface of the recess and a diaphragm fixed to the step of the recess. 4. The force according to claim 3, wherein the voice coil surrounds the magnet and an equalizer installed on the diaphragm.

5. The hybrid speaker according to claim 1, wherein the bone conduction speaker is formed by fixing a vibrating plate while maintaining a predetermined gap in a yoke supporting a voice coil and a magnet.

[6] The unit according to claim 1, wherein the vibration force of the bone conduction speaker is fixed to an inner surface of a unit case, and an equalizer of the air-conducting speaker is interposed through an elastic body. A hybrid speaker unit which is housed in the unit case by being fixed to the inner surface on the opposite side of the case.

7. The hybrid speaker unit according to claim 6, wherein the unit case is supported by a speaker holder made of an elastic material.

[8] A unit case in which the inside is partitioned into a bone conduction speaker space and an air-conducting speaker space by a partition plate is provided, and a bone conduction speaker is provided in the bone conduction speaker space, and the vibration plate is attached to the partition plate. A fixed speaker unit, wherein the speaker unit is installed by fixing the air-conducting speaker in the space for air-conducting speaker force by fixing the diaphragm surface to the inner surface of the unit case.

[9] An air-conducting loudspeaker case in which an air-conducting loudspeaker is incorporated is mounted on the vibrating plate of a bone conduction speaker in which a predetermined gap is held in a yoke supporting a voice coil and a magnet, and the vibration plate is fixed. A fixed hybrid speaker unit.

[10] The bone conduction speaker is supported by a speaker holder made of an elastic material. 9. The hybrid speaker unit according to 9.

[11] The speaker holder includes a support portion of the bone conduction speaker and a vibration plate exposure portion of the bone conduction speaker, and the air-conducting speaker case is attached to the vibration plate of the bone conduction speaker through the vibration plate exposure portion. 11. The hybrid speaker unit according to claim 10, which is fixed.