CN201805542U - Micro-moving coil transducer and vibrational system thereof - Google Patents

Micro-moving coil transducer and vibrational system thereof Download PDF

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Publication number
CN201805542U
CN201805542U CN201020279654XU CN201020279654U CN201805542U CN 201805542 U CN201805542 U CN 201805542U CN 201020279654X U CN201020279654X U CN 201020279654XU CN 201020279654 U CN201020279654 U CN 201020279654U CN 201805542 U CN201805542 U CN 201805542U
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China
Prior art keywords
vibrational system
coil type
type transducer
circuit board
magnetic
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Expired - Lifetime
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CN201020279654XU
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Chinese (zh)
Inventor
江超
杨健斌
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Goertek Inc
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Priority to CN201020279654XU priority Critical patent/CN201805542U/en
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Publication of CN201805542U publication Critical patent/CN201805542U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model provides a micro-moving coil transducer and a vibrational system thereof. The vibrational system comprises a vibrating plate and a driving device combined with the vibrating plate, and the vibrating plate is fixedly mounted on the micro-moving coil transducer. The driving device adopts a flexible circuit board structure, conductive coating is arranged on the flexible circuit board, and the conductive coating forms certain circuit arrangement on the flexible circuit board, so that the flexible circuit board can be stressed in the magnetic clearance of the magnetic circuit system of the micro-moving coil transducer to drive the vibrating plate to vibrate, so as to generate sound. By adopting the scheme, the manufacturing technique of the micro-moving coil transducer is simpler and the defect of poor electric connection is avoided, so that the structural stability and the electric connection performance of the vibrational system are improved.

Description

Miniature moving-coil type transducer and vibrational system thereof
Technical field
The utility model relates to the vibrational system technical field, specifically, relates to a kind of vibrational system of miniature moving-coil type transducer and uses the transducer of this vibrational system.
Background technology
Along with the development of portable terminal consumer electronics product, a large amount of energy transducer particularly miniature moving-coil type transducer has obtained using widely.The operation principle of well-known miniature moving-coil type transducer is, the drive unit that is connected with alternating current is stressed and make the vibration on the vibrational system generation vertical direction of moving-coil type transducer and take place or produce actuating in magnetic field.
The drive unit of traditional structure generally is the metal wire coiled coil tube that adopts the copper metal material, and by being connected with ac signal on coil tube, thereby it is stressed to make that coil tube produces, and then drives the vibrating reed vibration and produce sound or actuating.The drive unit of this traditional structure, when power was big, the metal wire on the coil tube was easy to generate fracture, thereby causes the electrical connection of drive unit bad; And the drive unit of this traditional structure needs to carry out coiling and shaping in process of production, and technology is comparatively complicated, is unfavorable for the raising of production efficiency and the reduction of production cost.
So, be necessary the miniature moving-coil type transducer architecture of said structure is improved, to avoid above-mentioned defective.
The utility model content
The utility model is made in order to solve above-mentioned problems of the prior art, its purpose is to provide a kind of miniature moving-coil type transducer vibrations system that has improved structure, technology is comparatively easy, can improve the structural stability and the electrical connection properties of vibrational system, and it is bad to avoid generation to be electrically connected.
To achieve these goals, the vibrational system of the miniature moving-coil type transducer that the utility model provides, involving vibrations sheet and the drive unit that combines with described vibrating reed, described vibrating reed is fixedly mounted on the described miniature moving-coil type transducer, wherein, described drive unit is the flexible circuitry plate structure, and described flexible circuit board is provided with conductive coating, and described conductive coating forms certain circuit configuration on described flexible circuit board.
In addition, preferred construction is that the formed circuit configuration of last conductive coating of described flexible circuit board is a planar structure.
In addition, preferred construction is that flexible circuit board is provided with the circuit configuration part of conductive coating to a lateral process, and the part of described projection is positioned at the formed magnetic gap of magnetic circuit system of described miniature moving-coil type transducer.
Moreover preferred construction is that the described conductive coating that is arranged on the flexible circuit board obtains the circuit configuration of needs by chemical etching technology.
On the other hand, the utility model also provides a kind of miniature moving-coil type transducer, comprises aforesaid vibrational system, magnetic circuit system and holds the shell of described vibrational system and magnetic circuit system.
In addition, preferred construction is, described magnetic circuit system is a two magnetic route structure, comprises magnetic conductive board and interior washer, internal magnet and the outer washer, the external magnet that combine with described magnetic conductive board respectively from top to bottom.
After adopting technique scheme, the manufacturing process of the vibrational system of miniature moving-coil type transducer is more easy, and can avoid producing the bad defective of electrical connection, thereby improves the structural stability and the electrical connection properties of vibrational system.
Description of drawings
By below in conjunction with accompanying drawing embodiment being described, above-mentioned feature of the present utility model and technological merit will become apparent and understand easily.
Fig. 1 is the concrete structure exploded perspective view of the miniature moving-coil type transducer that relates to of expression the utility model embodiment one;
Fig. 2 is the cross-sectional view of miniature moving-coil type transducer among the expression embodiment one;
Fig. 3 is the structural representation of the drive unit of miniature moving-coil type transducer among the expression embodiment one;
Fig. 4 is the cross-sectional view of the miniature moving-coil type transducer that relates to of expression embodiment two of the present utility model;
Fig. 5 is the vertical view of the drive unit of miniature moving-coil type transducer among the expression embodiment two.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done further detailed description.
In the following description, only some one exemplary embodiment of the present utility model has been described by the mode of explanation.Undoubtedly, those of ordinary skill in the art can recognize, under the situation that does not depart from spirit and scope of the present utility model, can revise described embodiment with various mode.Therefore, accompanying drawing and be described in just illustratively in essence rather than is used to limit the protection range of claim.In addition, in this manual, identical Reference numeral indicates identical part.
Embodiment one:
Fig. 1 is the exploded perspective view of the concrete structure of the miniature moving-coil type transducer that relates to of expression embodiment one of the present utility model; Fig. 2 represents the cross-sectional view of miniature moving-coil type transducer shown in Figure 1.As depicted in figs. 1 and 2, the miniature moving-coil type transducer that the utility model provides is a rectangle, comprises that magnetic circuit system, vibrational system and one hold the shell 4 of described magnetic circuit system and vibrational system.Magnetic circuit system is for providing the two magnetic route structure of big magnetic force, comprise magnetic conductive board 33 and interior washer 311, internal magnet 321 and the outer washer 312, the external magnet 322 that combine with magnetic conductive board 33 respectively from top to bottom, its China and foreign countries' washer 312, external magnet 322 are provided with around interior washer 311, internal magnet 321 and keep certain spacing; Vibrational system involving vibrations sheet 1, and the drive unit that is made of the flexible circuit board 2 that is installed on the vibrating reed 1, flexible circuit board is a circulus, is arranged in the magnetic gap that magnetic circuit system provides.Vibrating reed 1 is flexible plastics, and the edge of vibrating reed 1 is fixed on the outer washer 312 and makes vibrational system fix, and the center fixation of vibrating reed 1 is on interior washer 311.
Fig. 3 is the structural representation of the drive unit of miniature moving-coil type transducer among the expression embodiment one.As shown in Figure 3, the drive unit that flexible circuit board 2 constitutes is a planar structure, and flexible circuit board 2 is provided with conductive coating 21, conductive coating 21 forms certain circuit configuration on flexible circuit board 2, it is stressed that flexible circuit board 2 can be produced in the magnetic gap of magnetic circuit system when input electrical signal, thereby drive vibrating reed 1 vibration and generation sound.
Conductive coating 21 during present embodiment one constitutes is the conductive coating of copper metal material, and conductive coating 21 is arranged on the surface of flexible circuit board 2, and can obtain the circuit configuration of needs by chemical etching technology.Owing to adopted in the present embodiment one and replaced of the improvement of the coil tube of traditional metal wire coiling as drive unit with flexible circuit board, make the structural stability of miniature moving-coil type transducer drive device be enhanced, thereby avoided generation to be electrically connected defectives such as bad; And the wiring board manufacture craft is comparatively ripe, arranges by directly form circuitry needed by chemical corrosion on flexible circuit board, makes the production technology of drive unit more easy, has reduced the production cost of miniature moving-coil type transducer from another angle.
In present embodiment one, shell 4 is the rectangular frame structure, can adopt insulating material such as resin or plastics to make, and the sidewall of shell is provided with brace groove and the communication groove that is used to install magnetic circuit system.But it is apparent, also can neatly shell be designed to other shapes such as runway shape, circle or ellipse together with vibrational system and the magnetic circuit system that it held according to the actual needs of product, connected mode between shell and vibrational system and magnetic circuit system also can be made change, and these changes can not influence essence of the present invention.
Embodiment two:
Below, the concrete structure of the miniature moving-coil type transducer that the utility model embodiment two relates to is described with reference to Fig. 4 and Fig. 5.
Fig. 4 is the cross-sectional view of the miniature moving-coil type transducer that relates to of expression embodiment two of the present utility model; Fig. 5 is the vertical view of drive unit of the miniature moving-coil type transducer of expression embodiment two.Shown in Figure 4 and 5, except that the drive unit part, be known configurations in the related miniature moving-coil type transducer of present embodiment two, be mainly that with the difference of the foregoing description one structure of drive unit is different, the formed circuit configuration of the conductive coating of flexible circuit board 2 is a planar structure among the embodiment one, and in present embodiment two, the circuit configuration on flexible circuit board 2 ' surface is a stereochemical structure, the drive unit that flexible circuit board 2 ' constituted is provided with the circuit configuration part of conductive coating 21 ' to a lateral process, and the circuit configuration of the flexible circuit board 2 ' of projection partly is positioned at the formed magnetic gap of magnetic circuit system of described miniature moving-coil type transducer, makes flexible circuit board 2 ' to produce and drives the vibration of drive vibrating reed and sounding.
In addition, the miniature moving-coil type transducer in the present embodiment two is a circular configuration, and corresponding drive unit also is circular; Certainly the structure that drive unit also can corresponding miniature moving-coil type transducer is set to square, runway shape or ellipse etc.This improvement of this implementation process can realize the technique effect of above-mentioned implementation process equally.
Should be noted that the invention also can be applied on the vibrating mass such as motor.Under above-mentioned instruction of the present utility model, those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description, and as in the utility model, the below that flexible circuit board or voice coil loudspeaker voice coil is arranged on vibrating reed only is preferred version; The center that the additional guide magnetic sheet is combined in drive unit only is preferred version, also can also can be arranged on the vibrating diaphragm top relative with drive unit by amesiality additional guide magnetic sheet.
These improve and deformed configurations also all falls in the protection range of the present utility model.It will be understood by those skilled in the art that above-mentioned specific descriptions just are used to explain the purpose of this utility model, protection range of the present utility model is limited by claim and equivalent thereof.

Claims (10)

1. the vibrational system of a miniature moving-coil type transducer, involving vibrations sheet (1) and the drive unit that combines with described vibrating reed (1), described vibrating reed is fixedly mounted on the described miniature moving-coil type transducer, it is characterized in that,
Described drive unit is the flexible circuitry plate structure, and described flexible circuit board (2) is provided with conductive coating (21), and described conductive coating (21) forms certain circuit configuration on described flexible circuit board.
2. according to the described vibrational system of claim 1, it is characterized in that,
The formed circuit configuration of last conductive coating (21) of described flexible circuit board (2) is a planar structure.
3. according to the described vibrational system of claim 1, it is characterized in that,
Described flexible circuit board is provided with the circuit configuration part of conductive coating to a lateral process, and the part of described projection is positioned at the formed magnetic gap of magnetic circuit system of described miniature moving-coil type transducer.
4. according to each described vibrational system in the claim 1~3, it is characterized in that,
The described conductive coating that is arranged on the flexible circuit board obtains the circuit configuration of needs by chemical etching technology.
5. according to the described vibrational system of claim 4, it is characterized in that,
Described conductive coating is the conductive coating of copper metal material.
6. according to the described vibrational system of claim 4, it is characterized in that,
Described vibrating reed (1) is made of the plastics of flexibility.
7. miniature moving-coil type transducer, involving vibrations system, magnetic circuit system and hold the shell of described vibrational system and magnetic circuit system is characterized in that described vibrational system is each described vibrational system in the claim 1~6.
8. according to the described miniature moving-coil type transducer of claim 7, it is characterized in that,
Described magnetic circuit system is a two magnetic route structure, comprises magnetic conductive board and interior washer (311), internal magnet (321) and the outer washer (312), the external magnet (322) that combine with described magnetic conductive board respectively from top to bottom.
9. according to the described miniature moving-coil type transducer of claim 8, it is characterized in that,
The edge of described vibrating reed and center are separately fixed on the outer washer (312) and interior washer (311) of described magnetic circuit system.
10. according to the described miniature moving-coil type transducer of claim 9, it is characterized in that,
Described miniature moving-coil type transducer is rectangle, circle, ellipse or runway shape structure.
CN201020279654XU 2010-07-30 2010-07-30 Micro-moving coil transducer and vibrational system thereof Expired - Lifetime CN201805542U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201020279654XU CN201805542U (en) 2010-07-30 2010-07-30 Micro-moving coil transducer and vibrational system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020279654XU CN201805542U (en) 2010-07-30 2010-07-30 Micro-moving coil transducer and vibrational system thereof

Publications (1)

Publication Number Publication Date
CN201805542U true CN201805542U (en) 2011-04-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105025420A (en) * 2014-04-28 2015-11-04 全艺电子(昆山)有限公司 Magnetoconductivity oscillating plate used for flat-type loudspeaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105025420A (en) * 2014-04-28 2015-11-04 全艺电子(昆山)有限公司 Magnetoconductivity oscillating plate used for flat-type loudspeaker

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
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.

CX01 Expiry of patent term

Granted publication date: 20110420

CX01 Expiry of patent term