CN202019444U - Diaphragm and movable coil type electro-acoustic transducer employing diaphragm - Google Patents

Diaphragm and movable coil type electro-acoustic transducer employing diaphragm Download PDF

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Publication number
CN202019444U
CN202019444U CN2010205174990U CN201020517499U CN202019444U CN 202019444 U CN202019444 U CN 202019444U CN 2010205174990 U CN2010205174990 U CN 2010205174990U CN 201020517499 U CN201020517499 U CN 201020517499U CN 202019444 U CN202019444 U CN 202019444U
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China
Prior art keywords
vibrating diaphragm
central part
diaphragm
type electro
coil type
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Expired - Lifetime
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CN2010205174990U
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Chinese (zh)
Inventor
张成飞
葛连山
刘春发
江超
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Goertek Inc
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Priority to CN2010205174990U priority Critical patent/CN202019444U/en
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Abstract

The utility model provides a diaphragm and a movable coil type electro-acoustic transducer employing the diaphragm. The diaphragm comprises a rigid central part and a flexible folding ring part for supporting the central part, wherein the folding ring part is an annular body and is positioned in a vertical direction of a plane where the central part is positioned; and one end of the folding ring part is combined with an outer edge of the central part in an enclosed mode, and the other end of the folding ring part bends and extends in the vertical direction of the plane where the central part is positioned. By the diaphragm and the movable coil type electro-acoustic transducer, the defects that an effective vibration sounding area of the diaphragm with the traditional structure is small and frequency response performance of a product is reduced due to the reduction in product width and other dimensions when the traditional diaphragm is applied to the movable coil type electro-acoustic transducer are overcome.

Description

A kind of vibrating diaphragm and the moving-coil type electro-acoustic conversing device that adopts this vibrating diaphragm
Technical field
The utility model relates to the vibration sounding field, specifically, and the moving-coil type electro-acoustic conversing device that relates to a kind of vibrating diaphragm and adopt this vibrating diaphragm.
Background technology
Along with the development of various electronic products, a large amount of electro-acoustic transducer device particularly moving-coil type electro-acoustic conversing device has obtained using widely.The operation principle of well-known moving-coil type electro-acoustic conversing device is, the voice coil loudspeaker voice coil that is connected with alternating current is subjected to Lorentz force and makes vibration on the vibrational system generation vertical direction of moving-coil type electro-acoustic conversing device and sounding in magnetic field.
At present, be applied in the moving-coil type electro-acoustic conversing device of electronic products such as LCD TV, known, for the occupied space of the size that reduces electroacoustic transducer and promote operating power, generally it is designed to strip, the vibrating diaphragm of product structure inside also is designed to strip, this vibrating diaphragm generally comprises a central part and a ring portion, the binding site of the two is equipped with voice coil loudspeaker voice coil, and along with the vibration of voice coil loudspeaker voice coil, vibrating diaphragm also vibrates thereupon and sounds.
But the vibrating diaphragm of this traditional structure and adopt the moving-coil type electro-acoustic conversing device of this vibrating diaphragm to have a lot of defectives, polarization takes place in voice coil loudspeaker voice coil such as long narrow structure easily in high power work, have design to increase by the central part rigidity with vibrating diaphragm and avoid polarization, ring portion can provide the space for the vibration of the central part of rigidity for flexibility.Yet the vibrating diaphragm after this improvement and adopt the moving-coil type electro-acoustic conversing device of this vibrating diaphragm still to have deficiency, because effective vibration sounding position of this vibrating diaphragm is actually the rigid element at center, the flexible ring at its edge has partly taken a large amount of dimensional space, under the situation that product size is constantly dwindled, especially under the situation that the width of product reduces, effective vibration sounding zone of vibrating diaphragm reduces significantly, and this can be in the reduction that causes the moving-coil type electro-acoustic conversing device frequency response.
So, be necessary the vibrating diaphragm and the moving-coil type electro-acoustic conversing device of said structure are further 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, it is less that its purpose is to improve effective vibration sounding area that the vibrating diaphragm of traditional structure exists, and when being applied to this traditional vibrating diaphragm in the moving-coil type electro-acoustic conversing device, under the reducing of product width equidimension, cause the reduction of electroacoustic transducer frequency response.
To achieve these goals, the utility model provides a kind of vibrating diaphragm, comprises, described vibrating diaphragm comprises the central part of rigidity and supports the flexible ring portion of described central part; Described ring portion is that ring-type and its body are positioned on the vertical direction on plane, described central part place, and an end of described ring portion combines with the outward flange of described central part is airtight, and the other end is bending extension on the vertical direction on plane, described central part place.
As a kind of improvement, described ring portion waveform bending extension on the vertical direction on plane, described central part place.
As a kind of improvement, described vibrating diaphragm film is long narrow shape.
As a kind of improvement, described ring portion be rubber ring portion.
As a kind of improvement, described central part is the central part of expanded material.
The utility model also provides a kind of moving-coil type electro-acoustic conversing device, comprise shell and drive unit, and, comprise vibrating diaphragm as described above, one end of described vibrating diaphragm ring portion is fixed on described vibrating diaphragm is fixed, and described drive unit and described vibrating diaphragm combine.
Described drive unit also comprises fixture, described voice coil loudspeaker voice coil be plane distribution on described fixture, described fixture is fixed on the described central part.
Owing to taked above technology provided by the utility model, than conventional art, the ring portion at edge can not take the dimensional space of whole vibrating diaphragm, increased effective vibration area of vibrating diaphragm, be applied in the moving-coil type electro-acoustic conversing device, can not cause the reduction of the frequency response of moving-coil type electro-acoustic conversing device because of the restriction of its size.
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 stereogram of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment one;
Fig. 2 is that the A-A of presentation graphs 1 is to cutaway view;
Fig. 3 is the generalized section of the vibrating diaphragm of this moving-coil type electro-acoustic conversing device of expression;
Fig. 4 is the diaphragm structure schematic diagram of this moving-coil type electro-acoustic conversing device of expression;
Fig. 5 is the voice coil tube of this moving-coil type electro-acoustic conversing device of expression and the vertical view of support combination;
Fig. 6 is the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression and the schematic perspective view that voice coil tube, voice coil suspension make up;
Fig. 7 is the generalized section of the moving-coil type electro-acoustic conversing device that relates to of 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 the mode by explanation is described some one exemplary embodiment of the present utility model, 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 stereogram of the moving-coil type electro-acoustic conversing device that relates to of expression present embodiment, and Fig. 2 is that the A-A of presentation graphs 1 is to cutaway view; Fig. 3 is the voice coil tube of this moving-coil type electro-acoustic conversing device of expression and the vertical view of support combination; Fig. 4 is the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression and the schematic perspective view that voice coil tube, voice coil suspension make up; Fig. 5 is the generalized section that the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression combines with voice coil tube, support; Fig. 6 is the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression and the schematic perspective view that voice coil tube, voice coil suspension make up.As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, moving-coil type electro-acoustic conversing device provided by the utility model, be the strip structure, mainly comprise shell 1, vibrational system and magnetic circuit system, shell 1 is in the same place vibrational system and magnetic circuit system secure bond.
Vibrational system comprises the vibrating diaphragm 5 of the strip that is made of the central part 51 of rigidity and flexible ring portion 52 and the drive unit 4 that is made of flat voice coil tube 41 and the corresponding fixedly voice coil suspension 42 of voice coil tube 41.Ring portion 52 around the outward flange that is arranged on central part 51 and with central part 51 airtight combining, one end of ring portion 52 connects and centre of support portion 51, the other end is fixed on the shell 1, and the body of ring portion 52 is positioned on the vertical direction of 51 corresponding flats of central part; One end of voice coil suspension 42 is fixed on the central part 51, thereby vibrating diaphragm 5 and drive unit 4 have constituted the vibrational system of moving-coil type electro-acoustic conversing device; Wherein, voice coil suspension 42 is a flat board along the extension of moving-coil type electro-acoustic conversing device long axis direction, and voice coil tube 41 is a racetrack, and the major axis of voice coil tube 41 is consistent with the major axis bearing of trend of moving-coil type electro-acoustic conversing device.
In the present embodiment, ring portion 52 is the waveform bending extension, so that vibrating diaphragm 5 has good compliance; Central part 51 is a light material, and as expanded material, ring portion 52 adopts flexible materials such as rubber.This architecture advances design to vibrating diaphragm 5, because on the plane of central part 51 correspondences, ring portion 52 does not take up room, like this under the certain situation of the installation dimension of vibrating diaphragm 5, increased effective vibration area of central part 52, particularly be applied in the vibrating diaphragm and moving-coil type electro-acoustic conversing device of such strip, when width is fixed or reduced under the situation of certain product width, can guarantee moving-coil type electro-acoustic conversing device power by the effective vibration area that increases vibrating diaphragm 5, guarantee acoustical behavior.
Magnetic circuit system in this implementation process comprises two magnetic conductive boards 2 being oppositely arranged and is provided with between the upper and lower every two groups of magnet 3 that are provided with in magnetic conductive board 2 inside, magnet 3 is strip and extends along the long axis direction of moving-coil type electro-acoustic conversing device, every group of magnet 3 is relative two, two magnetic poles that magnetic pole is oppositely arranged and magnet 3 is close are opposite, make two sidewalls of the magnetic gap that formation between two groups of magnet 3 is long narrow.In this implementation process when the drive unit 4 of vibrational system is installed to the magnetic gap of described magnetic circuit system, two end faces of voice coil tube 41 are respectively towards two sidewalls of long and narrow magnetic gap, when voice coil tube 41 by conducting electricity 43 when being connected with ac signal, voice coil tube 41 is just along the magnetic gap in the vertical direction vibration of magnetic circuit system.For increasing the actuating force of drive unit, two major axis of the end face of voice coil tube 41 partly lay respectively at the magnetic pole of two groups of magnet 3, and voice coil tube 41 is perpendicular to two sidewalls of magnetic gap, at this moment, the main direct magnetic pole of the magnetic flux of voice coil tube 41 from two groups of magnet that are oppositely arranged 41, can realize bigger power so that be subjected to bigger actuating force in the voice coil tube 41.In addition, being positioned at two magnet that are same as the side in this implementation process also can adopt on the vertical direction polarity opposite and be oppositely arranged, also can keep at least one magnet, all the other magnet positions are provided with projection implement on magnetic conductive board according to needs to properties of product.This magnetic circuit and the design of corresponding voice coil tube can be saved the space of the particularly long narrow shape moving-coil type electro-acoustic conversing device of moving-coil type electro-acoustic conversing device Width, can realize increasing moving-coil type electro-acoustic conversing device magnetic flux.
Owing to adopted above-mentioned diaphragm structure design, increased effective vibration area of vibrating diaphragm, in the design process of moving-coil type electro-acoustic conversing device, can not cause the reduction of power simultaneously because width must limit, avoid producing performance deficiency.
Embodiment two:
Fig. 7 is the generalized section of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment two, as shown in Figure 7, this implementation process is with the main distinction of the foregoing description, the structure difference of the moving-coil type electro-acoustic conversing device in this implementation process, voice coil tube 42 ' is set on the support 41 ' in this implementation process, and magnetic circuit system comprises first magnetic conductive board 21 ', magnet 3 ' and second magnetic conductive board 22 ' of assembling from top to bottom.Its medium-height trestle 41 ' combines with the central part 51 of vibrating diaphragm, and the ring portion 52 of vibrating diaphragm is fixed on the shell 1 '.
This design can be implemented vibrating diaphragm in the utility model according to the structure of different product equally, can realize the technique effect of above-mentioned implementation process equally; Also moving-coil type electro-acoustic conversing device can be revised as other known magnetic structure in this implementation process.
In the above-described embodiments, the vibrating diaphragm of strip and be applied in and only be embodiment preferred on the moving-coil type electro-acoustic conversing device of strip.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 these improvement and distortion; all drop in the 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 (8)

1. a vibrating diaphragm is characterized in that,
Described vibrating diaphragm comprises the central part of rigidity and supports the flexible ring portion of described central part;
Described ring portion is that annular body is positioned on the vertical direction on plane, described central part place, and an end of described ring portion combines with the outward flange of described central part is airtight, and the other end is bending extension on the vertical direction on plane, described central part place.
2. according to the described vibrating diaphragm of claim 1, it is characterized in that,
Described ring portion waveform bending extension on the vertical direction on plane, described central part place.
3. according to the described vibrating diaphragm of claim 2, it is characterized in that,
Described vibrating diaphragm is long narrow shape.
4. according to the described vibrating diaphragm of claim 3, it is characterized in that,
Described ring portion is a rubber ring portion.
5. according to the described vibrating diaphragm of claim 3, it is characterized in that,
Described central part is the central part of expanded material.
6. a moving-coil type electro-acoustic conversing device comprises shell and drive unit, it is characterized in that,
Comprise that as the described vibrating diaphragm of claim 1 to 5 one end of described vibrating diaphragm ring portion is fixed on described vibrating diaphragm is fixed, described drive unit and described vibrating diaphragm combine.
7. according to the described moving-coil type electro-acoustic conversing device of claim 6, it is characterized in that,
Described drive unit also comprises fixture, described voice coil loudspeaker voice coil be plane distribution on described fixture, described fixture is fixed on the described central part.
CN2010205174990U 2010-09-01 2010-09-01 Diaphragm and movable coil type electro-acoustic transducer employing diaphragm Expired - Lifetime CN202019444U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205174990U CN202019444U (en) 2010-09-01 2010-09-01 Diaphragm and movable coil type electro-acoustic transducer employing diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205174990U CN202019444U (en) 2010-09-01 2010-09-01 Diaphragm and movable coil type electro-acoustic transducer employing diaphragm

Publications (1)

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CN202019444U true CN202019444U (en) 2011-10-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015003390A1 (en) * 2013-07-12 2015-01-15 Huang Lai-Shi Electroacoustic transducer with deformable diaphragm
CN108464016A (en) * 2016-01-19 2018-08-28 索尼公司 Acoustic transducer and sound output device
CN111935608A (en) * 2020-06-30 2020-11-13 瑞声新能源发展(常州)有限公司科教城分公司 Vibrating diaphragm subassembly and speaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015003390A1 (en) * 2013-07-12 2015-01-15 Huang Lai-Shi Electroacoustic transducer with deformable diaphragm
CN108464016A (en) * 2016-01-19 2018-08-28 索尼公司 Acoustic transducer and sound output device
CN111935608A (en) * 2020-06-30 2020-11-13 瑞声新能源发展(常州)有限公司科教城分公司 Vibrating diaphragm subassembly and speaker

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GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

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

Patentee after: Goertek Inc.

Address before: 261031 GoerTek acoustics Limited by Share Ltd, 268 Dongfang Road, hi tech Industrial Development Zone, Shandong, Weifang

Patentee before: Goertek Inc.

CX01 Expiry of patent term

Granted publication date: 20111026

CX01 Expiry of patent term