Sound production device

A technology of a sound-emitting device and a basin frame, which is applied in the field of sound and electricity, can solve the problems of easy swinging of the vibration system, affecting the reliability, and limited vibration-membrane suppression, and achieve the effects of improving the acoustic performance, improving the stability and improving the reliability.

Inactive Publication Date: 2018-05-18

AAC TECH PTE LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0004] However, in the sound-generating device of the related art, the lead wire of the voice coil needs to be drawn out from the space between two adjacent secondary magnets, because the magnetic circuit system includes five magnets, so that the space for the lead wi...

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Method used

Because described voice coil 22 is made by enameled wire winding, on the basis of above-mentioned structure, in the present embodiment, the enameled wire that makes described voice coil 22 is pure copper wire or copper-clad aluminum wire, and this structure effectively improves The sensitivity of the sound-generating device 100 is improved, so that the acoustic performance of the sound-generating device 100 is better.

Compared with the related art, the sounding device of the present invention adds the described ring part and the described conductive sheet embedded in the described ring part, and makes the voice coil and the conductive terminal respectively connected with the The conductive sheet is electrically connected, so that the conductive sheet replaces the voice coil lead wire structure, avoiding the phenomenon that the voice coil lead wire collides with the magnetic circuit system when the diaphragm vibrates in the related art, thereby completely avoiding the problem of voice coil lead wire breakage problem, which greatly improves the reliability of the sound-generating device; because the ring part is made of insulating material and has elasticity, when one side of it is fixed to the frame, the other side is fixed to support the voice coil At the same time, the support of the vibration system is increased, the side swing of the voice coil is prevented, the stability of the vibration system is effectively improved, and the acoustic performance of the sound-generating device is improved.

The first fixed portion 52 is fixed on the frame 1, and the second fixed portion 53 is fixed on an end of the voice coil 22 away from the diaphragm 21, thereby forming a support for th...

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Abstract

The invention provides a sound production device. The sound production device comprises a frame, a vibration system, a magnetic circuit system and a conducting terminal, two folding ring parts and conducting plates which are fixed to the frame; the vibration system comprises a vibrating diaphragm and a voice coil driving the vibrating diaphragm to vibrate, and the voice coil is electrically connected with the conducting terminal; the magnetic circuit system comprises a magnetic yoke, main magnetic steel and two auxiliary magnetic steel located on the two opposite sides of the main magnetic steel respectively; the folding ring parts are made of an insulating material and arranged on the other two opposite sides of the main magnetic steel respectively, and the conducting plates are embeddedinto the folding ring parts; and the two folding ring parts and the two auxiliary magnetic steel are arranged in a staggered and spaced mode, one side of each folding ring part is fixedly connected with the frame in an insulated mode, the other side of each folding ring part is fixedly connected with the end, far away from the vibrating diaphragm, of the voice coil in an insulated mode, and the voice coil and the conducting terminal are electrically connected with the conducting plates. Compared with the related technology, the sound production device is good in reliability and excellent in acoustic performance.

Application Domain

Electrical transducers

Technology Topic

ElectricityEngineering +4

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Examples

Experimental program(1)

Example Embodiment

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] See also Figure 1-3 The present invention provides a sound generating device 100, which includes a basin frame 1, a vibration system 2, a magnetic circuit system 3, a conductive terminal 4, a folding ring portion 5, and a conductive sheet 6.

[0026] The vibration system 2 and the magnetic circuit system 3 are respectively fixed to the basin frame 1, and the magnetic circuit system 3 drives the vibration system 2 to vibrate and produce sound.

[0027] The vibration system 2 includes a diaphragm 21 fixed to the frame 1 and a voice coil 22 that drives the diaphragm 21 to vibrate.

[0028] The magnetic circuit system 3 includes a magnetic yoke 31 fixed to the basin frame 1, a main magnetic steel 32 fixedly assembled to the magnetic yoke 31, and a main magnetic steel 32 arranged around the main magnetic steel 32 and located on the main magnetic steel 32 respectively. The two auxiliary magnets 33 on opposite sides of each other.

[0029] The secondary magnet 33 and the main magnet 32 form a magnetic gap (not numbered) at intervals, and the voice coil 22 is inserted and suspended in the magnetic gap.

[0030] The conductive terminal 4 is fixed to the basin frame 1, the conductive terminal 4 is electrically connected to the voice coil 22, and the voice coil 22 is connected to the magnetic circuit system 3 through the conductive terminal 4 after being connected to an external power source. Together, an electromagnetic field is generated, which causes the voice coil 22 to reciprocate, thereby driving the diaphragm 21 to vibrate and produce sound.

[0031] The folding ring portion 5 includes two, and the two folding ring portions 5 are made of insulating material and are respectively disposed on the other opposite sides of the main magnet 32. That is, the two folding ring portions 5 and the two auxiliary magnets 33 are arranged at a staggered interval and are arranged to surround the main magnet 32 together.

[0032] In this embodiment, the magnetic circuit system 3 has a rectangular structure, and the two folding ring portions 5 are respectively located on opposite sides of the main magnet 32 along the minor axis. The folding ring part 5 is made of silica gel, of course, the material is not limited to this.

[0033] One side of the folding ring portion 5 is insulated and fixedly connected to the basin frame 1, and the other side thereof is insulated and fixedly connected to an end of the voice coil 22 away from the diaphragm 21. This structure enables the folding ring portion 5 to support the voice coil 22 in Xi’an, increases the supporting force of the vibration system 2, prevents the voice coil 22 from swinging, and effectively improves the vibration system 2 The stability improves the acoustic performance of the sound emitting device 100.

[0034] Please refer to Figure 4 As shown, specifically, the folding ring portion 5 includes an elastic portion 51 and a first fixing portion 52 and a second fixing portion 53 respectively extending from opposite sides of the elastic portion 51.

[0035] The first fixing portion 52 is fixed to the basin frame 1, and the second fixing portion 53 is fixed to the end of the voice coil 22 away from the diaphragm 21, so as to support the voice coil 22 to prevent sound The purpose of the side swing of the ring 22. At the same time, due to the elastic effect of the elastic portion 51, the vibration performance of the vibration system 2 is strengthened, thereby improving the acoustic performance of the sound generating device 100.

[0036] In order to ensure the effective vibration space of the voice coil 22, in this embodiment, the sound emitting device 100 is further provided with a first connecting portion 7 and a second connecting portion 8. The first connecting portion 7 fixes the first fixing portion 52 to the basin frame 1, and the second connecting portion 8 fixes the second fixing portion 53 to the voice coil 22. That is, the folding ring portion 5 is raised in the direction of the yoke 31 through the first connecting portion 7 and the first connecting portion 8 to ensure that the voice coil 22 has sufficient effective vibration space.

[0037] In this embodiment, the structure of the elastic portion 51 is not limited, and the cross section of the elastic portion 51 is in an arc-shaped structure, or a wave-shaped structure, or a hollow ring structure, etc., which are all feasible.

[0038] For example, the elastic portion 51 includes at least one recessed from the side close to the yoke 31 toward the diaphragm 21 and/or from the side close to the diaphragm 21 toward the yoke 31 Arc-shaped groove structure formed by depressions. When the arc-shaped groove structure includes two recesses with opposite directions, the elastic portion 51 forms an "S" shape; when the arc-shaped groove structure includes three or more, the elastic portion 51 forms a wave shape.

[0039] For another example, when the cross section of the elastic portion 51 is a hollow ring structure, the whole may be circular or elliptical.

[0040] The conductive sheet 6 and the folding ring portion 5 are correspondingly provided in two and are embedded in the folding ring portion 5 respectively. In this embodiment, the folding ring portion 5 may be an integral structure or a double-layer structure. For example, when the folding ring portion 5 has a double-layer structure, the conductive sheet 6 is embedded between the double-layer structure after the double-layer structure.

[0041] The voice coil 22 and the conductive terminal 4 are electrically connected to the conductive sheet 6 respectively, so as to form a structure in which the conductive terminal 4 introduces power to the voice coil 22. That is, the conductive terminal 4 replaces the voice coil lead structure in the prior art. This structure avoids the phenomenon that the voice coil lead wire collides with the magnetic circuit system 3 when the diaphragm 21 vibrates in the related art, thereby completely avoiding the problem of voice coil lead wire disconnection, and greatly improving the sound generating device 100 The reliability.

[0042] Please combine Figure 5 As shown, specifically, the conductive sheet 6 includes a body 61 and a first pad 62 and a second pad 63 respectively extending from two ends of the body 61. In this embodiment, the conductive sheet 6 is copper foil.

[0043] The body 61 is embedded in the folding ring portion 5; the first pad 62 and the second pad 63 are respectively exposed outside the folding ring portion 5, and the conductive terminal 4 is connected to the first The bonding pad 62 is fixedly electrically connected, and the voice coil 22 is fixedly electrically connected to the second bonding pad 63, so as to achieve an electrical connection structure between the voice coil 22 and the conductive terminal 4.

[0044] More preferably, the first pad 62 and the second pad 63 are respectively exposed on the side of the folding ring portion 5 away from the diaphragm 21, and this structure makes full use of space.

[0045] Because the voice coil 22 is made of enameled wire wound, based on the above structure, in this embodiment, the enameled wire made of the voice coil 22 is pure copper wire or copper-clad aluminum wire. This structure effectively improves the The sensitivity of the sound emitting device 100 makes the acoustic performance of the sound emitting device 100 better.

[0046] Compared with the related art, the sound generating device of the present invention is provided with the folded ring portion and the conductive sheet embedded in the folded ring portion, and the voice coil and the conductive terminal are electrically connected to the conductive sheet. Connection, so that the conductive sheet replaces the voice coil lead structure, avoids the phenomenon of the voice coil lead colliding with the magnetic circuit system when the diaphragm vibrates in the related art, thereby completely avoiding the problem of voice coil lead wire disconnection. The reliability of the sound generating device is greatly improved; because the folding ring part is made of insulating material and has elasticity, when one side is fixed to the basin frame and the other side is fixed to support the voice coil, it is increased The support of the vibration system prevents the side swing of the voice coil, effectively improves the stability of the vibration system, and improves the acoustic performance of the sound generating device.

[0047] The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

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Classification and recommendation of technical efficacy words

Increase support
Improve reliability

Sound production device

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

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Description & Claims & Application Information

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