CN203590437U - Micro loudspeaker - Google Patents

Micro loudspeaker Download PDF

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Publication number
CN203590437U
CN203590437U CN201320645368.4U CN201320645368U CN203590437U CN 203590437 U CN203590437 U CN 203590437U CN 201320645368 U CN201320645368 U CN 201320645368U CN 203590437 U CN203590437 U CN 203590437U
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CN
China
Prior art keywords
voice coil
basin frame
microspeaker
magnet
magnetic circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201320645368.4U
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Chinese (zh)
Inventor
刘树钦
李中宇
房晓斐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to CN201320645368.4U priority Critical patent/CN203590437U/en
Application granted granted Critical
Publication of CN203590437U publication Critical patent/CN203590437U/en
Active legal-status Critical Current
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Abstract

The utility model discloses a micro loudspeaker, comprising a vibration system and a magnetic circuit system. The vibration system comprises a diaphragm and a voice coil successively combined. The magnetic circuit system comprises a magnet and a basket. The magnetic circuit system forms a magnetic gap for receiving the voice coil. The position, which is right directed towards the magnetic gap, on the bottom wall of the basket is provided with a leakage hole communicating the internal space and the external space of the basket. The structure prevents polarization of the diaphragm caused by non-uniform air flow at the back side of the diaphragm, and guarantees balanced vibration of the diaphragm. Also, the structure can effectively reduce second harmonic distortion, thereby improving distortion of the micro loudspeaker.

Description

Microspeaker
Technical field
The utility model relates to electro-acoustic product technical field, is specifically related to a kind of Microspeaker.
Background technology
Microspeaker involving vibrations system of the prior art and magnetic circuit system, wherein, vibrational system comprises vibrating diaphragm and the voice coil loudspeaker voice coil that is incorporated into vibrating diaphragm one side, and magnetic circuit system comprises magnet and magnetic conductive board, and magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil.Voice coil loudspeaker voice coil is connected after the signal of telecommunication, up-down vibration the further vibrating diaphragm generation of vibration sound that drives in the magnetic gap forming at magnetic circuit system.Conventionally on Microspeaker, be positioned in the structure of vibrating diaphragm rear side phonate hole can be set, the air-flow that vibrating diaphragm rear side is produced can be in communication with the outside by phonate hole, thereby makes the vibration that vibrating diaphragm can be balanced.But this phonate hole is positioned at the structure of mini-sound device marginal position, the air-flow of vibrating diaphragm rear side can not flow uniformly, cause vibrating diaphragm vibration unbalanced, and distortion is larger.Therefore, be necessary the microphone device of this structure to improve, to avoid above-mentioned defect.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Microspeaker, can make the air-flow Uniform Flow of vibrating diaphragm rear side, thereby makes the vibration that vibrating diaphragm can be balanced, reduces the distortion of product.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of Microspeaker, and involving vibrations system and magnetic circuit system, described vibrational system comprises vibrating diaphragm and the voice coil loudspeaker voice coil of combination successively, described magnetic circuit system comprises magnet and the basin frame of combination successively; Described magnetic circuit system forms the magnetic gap of accommodating described voice coil loudspeaker voice coil, and wherein, the diapire of described basin frame is just provided with to the position of described magnetic gap the leak holes that is communicated with basin frame inner space and basin frame space outerpace.
In addition, preferably scheme is, the centre of described basin frame is provided with the recessed resettlement section of accommodating described magnet and described voice coil loudspeaker voice coil, is combined with described magnet in the center of bottom, described resettlement section; Space between described magnet and described resettlement section sidewall forms the magnetic gap of accommodating described voice coil loudspeaker voice coil, and bottom, described resettlement section is just provided with described leak holes to the position of described magnetic gap.
In addition, preferred scheme is that described vibrating diaphragm is incorporated into the position of described basin frame top surface edge.
In addition, preferred scheme is, described Microspeaker also comprises wiring board, and described wiring board in the outside away from described vibrational system, and is also provided with location structure corresponding to the position at described wiring board edge on described basin frame in conjunction with described basin frame.
In addition, preferably scheme is, the center of described magnetic circuit system is provided with perforate, and the center of described basin frame and described magnet is equipped with the perforate of mutual correspondence.
In addition, preferred scheme is that described magnetic circuit system also comprises washer, on described washer, corresponding to the position of described magnet perforate, is provided with perforate.
In addition, preferred scheme is that the marginal position of described basin frame is provided with phonate hole.
Adopt after technique scheme, compared with traditional structure, the utility model is provided with leak holes at basin frame diapire corresponding to the position of magnetic gap, thereby has avoided the polarization due to the inhomogeneous vibrating diaphragm causing of sidewind after vibrating diaphragm, guarantees the vibration that vibrating diaphragm can balance; In addition, this structure can effectively reduce second harmonic distortion, thereby has improved the distortion phenomenon of Microspeaker.
Accompanying drawing explanation
By below in conjunction with accompanying drawing, the utility model being described, above-mentioned feature of the present utility model and technological merit will become apparent and easily understand.
Fig. 1 is the stereo decomposing structural representation of the utility model embodiment mono-Microspeaker;
Fig. 2 is the perspective view of the utility model embodiment mono-Microspeaker;
Fig. 3 is the vertical view of Microspeaker shown in Fig. 2;
Fig. 4 is the perspective view of the utility model embodiment bis-magnetic circuit systems.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done to further detailed description.
Embodiment mono-:
As shown in Figure 1 to Figure 3, Microspeaker involving vibrations system and magnetic circuit system, vibrational system comprises vibrating diaphragm 11 and the voice coil loudspeaker voice coil 12 that is incorporated into vibrating diaphragm 11 1 sides, and magnetic circuit system comprises washer 31, magnet 32 and the basin frame 33 of combination successively, and wherein magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil 12.In addition, also comprise wiring board 4, wiring board 4 is provided with the pad being simultaneously electrically connected with external circuit and voice coil loudspeaker voice coil 12, realizes being electrically connected of external circuit and Microspeaker internal circuit, thereby make external circuit realize the control to the Microspeaker signal of telecommunication by controlling voice coil loudspeaker voice coil 12 by wiring board 4.
The structure that basin frame 33 of the present utility model is magnetic conduction, basin frame 33 except with washer 31 and basin frame 33 secure bond also accommodate fixing vibrational system.In the middle of basin frame 33, be recessed resettlement section, the center of resettlement section diapire is in conjunction with magnet 32 and washer 31, and the space between resettlement section internal magnet and washer and resettlement section sidewall forms the magnetic gap of accommodating voice coil loudspeaker voice coil 12, and voice coil loudspeaker voice coil 12 can free vibration in magnetic gap.The marginal portion of the edge secure bond vibrating diaphragm 12 of the uper side surface of basin frame 33, realizes fixing vibrational system.The present embodiment is at the marginal position of basin frame 33, i.e. the outer rim of resettlement section, is provided with phonate hole 332, and the air-flow that vibrating diaphragm 11 rear sides (i.e. a side of close voice coil loudspeaker voice coil) are produced can be communicated to the external world by phonate hole 332.
Preferably, on the diapire of resettlement section, corresponding to the position of magnetic gap, leak holes 331 is set, the air-flow that leak holes 331 can make vibrating diaphragm 11 rear sides produce is equally in communication with the outside.The air-flow producing at center position due to vibrating diaphragm 11 is larger, this position that leak holes 331 is arranged to close vibrating diaphragm 11 centers on basin frame 33 diapires, be conducive to air-flow and extraneous being communicated with that vibrating diaphragm 11 produces, thereby avoided the polarization due to the inhomogeneous vibrating diaphragm causing of the rear sidewind of vibrating diaphragm 11, guaranteed the vibration that vibrating diaphragm can balance; In addition, this structure can effectively reduce second harmonic distortion, thereby has improved the distortion phenomenon of Microspeaker.
In addition, as shown in Figures 2 and 3, on the diapire of basin frame 33 away from vibrational system, be combined with wiring board 4, corresponding to the position at wiring board 4 edges, be provided with location division 333, location division 333 can limit the particular location of wiring board 4, thereby has guaranteed the accuracy that wiring board is installed.
Embodiment bis-:
As shown in Figure 4, the main distinction of the present embodiment and embodiment mono-is, except arranging on basin frame 33 ' phonate hole 332 and leak holes 331, the center of magnetic circuit system is also provided with perforate, in the center of washer 31, magnet 32 and basin frame 33 ', be equipped with the corresponding perforate arranging: on washer 31, be provided with washer perforate 310, magnet 32 is provided with magnet perforate 320, and basin frame 33 ' is provided with basin frame perforate 330.This structure that just position at vibrating diaphragm center is being arranged perforate at magnetic circuit system, can better make the air-flow of vibrating diaphragm rear side be in communication with the outside, thereby has improved the resonance phenomena of vibrating diaphragm, makes the vibration that vibrating diaphragm can be balanced; In addition can more obviously reduce the second harmonic distortion of vibrating diaphragm, improve the distortion phenomenon of Microspeaker.
Under above-mentioned instruction of the present utility model; those skilled in the art can carry out other improvement and distortion on the basis of above-described embodiment; and these improvement and distortion; all drop in protection range of the present utility model; those skilled in the art should be understood that; above-mentioned specific descriptions are just better explained the purpose of this utility model, and protection range of the present utility model is limited by claim and equivalent thereof.

Claims (7)

1. a Microspeaker, involving vibrations system and magnetic circuit system, described vibrational system comprises vibrating diaphragm and the voice coil loudspeaker voice coil of combination successively, described magnetic circuit system comprises magnet and the basin frame of combination successively; Described magnetic circuit system forms the magnetic gap of accommodating described voice coil loudspeaker voice coil, it is characterized in that, the diapire of described basin frame is just provided with to the position of described magnetic gap the leak holes that is communicated with basin frame inner space and basin frame space outerpace.
2. a kind of Microspeaker according to claim 1, is characterized in that, the centre of described basin frame is provided with the recessed resettlement section of accommodating described magnet and described voice coil loudspeaker voice coil, is combined with described magnet in the center of bottom, described resettlement section; Space between described magnet and described resettlement section sidewall forms the magnetic gap of accommodating described voice coil loudspeaker voice coil, and bottom, described resettlement section is just provided with described leak holes to the position of described magnetic gap.
3. a kind of Microspeaker according to claim 2, is characterized in that, described vibrating diaphragm is incorporated into the position of described basin frame top surface edge.
4. according to a kind of Microspeaker described in the arbitrary claim of claims 1 to 3, it is characterized in that, described Microspeaker also comprises wiring board, described wiring board in the outside away from described vibrational system, and is also provided with location structure corresponding to the position at described wiring board edge on described basin frame in conjunction with described basin frame.
5. a kind of Microspeaker according to claim 4, is characterized in that, the center of described magnetic circuit system is provided with perforate, and the center of described basin frame and described magnet is equipped with the perforate of mutual correspondence.
6. a kind of Microspeaker according to claim 5, is characterized in that, described magnetic circuit system also comprises washer, on described washer, corresponding to the position of described magnet perforate, is provided with perforate.
7. a kind of Microspeaker according to claim 4, is characterized in that, the marginal position of described basin frame is provided with phonate hole.
CN201320645368.4U 2013-10-18 2013-10-18 Micro loudspeaker Active CN203590437U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320645368.4U CN203590437U (en) 2013-10-18 2013-10-18 Micro loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320645368.4U CN203590437U (en) 2013-10-18 2013-10-18 Micro loudspeaker

Publications (1)

Publication Number Publication Date
CN203590437U true CN203590437U (en) 2014-05-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320645368.4U Active CN203590437U (en) 2013-10-18 2013-10-18 Micro loudspeaker

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109040906A (en) * 2018-08-14 2018-12-18 瑞声科技(新加坡)有限公司 Microphone device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109040906A (en) * 2018-08-14 2018-12-18 瑞声科技(新加坡)有限公司 Microphone device

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GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268

Patentee after: Goertek Inc.

Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268

Patentee before: Goertek Inc.

C56 Change in the name or address of the patentee