CN201708921U - Moving-core-type audio-frequency transducer - Google Patents
Moving-core-type audio-frequency transducer Download PDFInfo
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- CN201708921U CN201708921U CN2010201892874U CN201020189287U CN201708921U CN 201708921 U CN201708921 U CN 201708921U CN 2010201892874 U CN2010201892874 U CN 2010201892874U CN 201020189287 U CN201020189287 U CN 201020189287U CN 201708921 U CN201708921 U CN 201708921U
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- voice coil
- loop assembly
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Abstract
The utility model discloses a moving-core-type audio-frequency transducer, which comprises a case, a voice coil, a magnetic loop assembly and a positioning elastic part, wherein the magnetic loop assembly comprises a soft iron and a magnet, and is accommodated in the case through the positioning elastic part, one end of the positioning elastic part is connected with the magnetic loop assembly, and the other end thereof is connected with the case; and the voice coil comprises a fixing part and a coil part, and is fixed in the case through the fixing part, and the coil part is wound between the soft iron and the magnet of the magnetic loop assembly. The utility model not only solves the defects that the vibration which is generated to the contacting object medium by the traditional electroacoustical transmission device is weak and the sound directivity is shrill, but also can be used as an audio-frequency vibromasseur to have a better audio-frequency vibromassage health-care function.
Description
Technical field
The utility model relates to a kind of electroacoustic vibration transmission device, relates more specifically to a kind of moveable core audio-frequency transducer.
Background technology
Traditional sounding transmitting device (as loudspeaker) only is to use cone or vibrating diaphragm to produce vibration and promotes the air sounding, not only exist directive property sharp-pointed, and the vibration that produces of its cone that links to each other with voice coil loudspeaker voice coil or vibrating diaphragm is not suitable for being used for promoting medium such as desktop and produces vibration, when being particularly useful for the human body vibration massage its oscillating action power very a little less than.
Along with science and technology development, the acoustic transducer of magnetostrictive material manufacturing has appearred utilizing, by rigid of transmission mechanism vibrational energy is delivered to (as desktop, glass, cabinet door-plate etc.) on the tabular sounding body, thereby phonation board is sounded, the loud speaker that utilizes this technology to make, existing generally is that magnetostrictive rod, coil, permanent magnetism sheet, bobbin are combined in the housing, goes out vibration source by T type rod guidance, thereby drives the sheet material sounding.
As seen, utilize the loud speaker of the characteristic manufacturing of magnetostrictive material, different fully with the structure of traditional loudspeaker, be to make changes of magnetic field by change in electric with sound, it is flexible that magnetic materials is taken place, be transformed into mechanical oscillation signal, thereby drive dull and stereotyped sounding, make it can't export effective bass because the low frequency characteristic of magnetostrictive material is bad at present again.But all there is complex structure in the loud speaker of prior art, uses inconvenient deficiency is installed, and production cost is higher.
Therefore, be necessary to provide a kind of improved moveable core audio-frequency transducer to overcome above-mentioned defective.
The utility model content
The purpose of this utility model is the above-mentioned deficiency at prior art, provide a kind of simple in structure, make moveable core audio-frequency transducer easy to assembly, not only solved a little less than the vibration that the traditional electrical acoustic transmission system produces the object medium that is in contact with it and the sharp-pointed defective of sound directivity, and human body has been played the effect of good audio frequency vibration health care massage because its outstanding low frequency characteristic also can be used as a kind of audio frequency vibration massager.
To achieve these goals, the utility model provides a kind of moveable core audio-frequency transducer, comprise shell, voice coil loudspeaker voice coil, magnetic loop assembly and upper and lower location elastic component, described magnetic loop assembly comprises soft iron and magnet, and described magnetic loop assembly is butted on the bottom interior surface of described shell with the ccontaining inside of being fixed in described shell by top inner surface and the described location down elastic component that described upward location elastic component is butted on described shell; Described voice coil loudspeaker voice coil comprises fixed part and coil portion, and described voice coil loudspeaker voice coil is fixed in the voice coil loudspeaker voice coil holddown groove of described shell by described fixed part and described coil portion is wound between the soft iron and magnet of described magnetic loop assembly.
Preferably, the soft iron of described magnetic loop assembly comprises U iron and magnetic conduction pole piece, and described magnetic conduction pole piece and described magnet are ccontaining to be fixed in the inside of described U iron and to be provided with the gap with described U iron inner ring surface, and the coil portion of described voice coil loudspeaker voice coil is wound in the described gap.
Preferably, described magnet comprises inner magnet and outer magnet, and described inner magnet and outer magnet are connected to the upper and lower surface of described magnetic conduction pole piece.
Preferably, also comprise silicagel pad and silicone tube, described silicagel pad is located at the upper surface of described magnetic loop assembly to play anti-overshoot protection effect; Described silicone tube places between the bottom interior surface of the lower surface of described magnetic loop assembly and described shell to play a vibration cushioning effect.
Preferably, also comprise the silica gel sucker, described silica gel sucker is fixed in the outside bottom surface of described shell.
Preferably, also comprise a push rod, the center correspondence of the top of described magnetic loop assembly and described shell, bottom is provided with perforate, one end of described push rod is fixed in described silica gel sucker, and the other end passes the perforate of described outer casing bottom, magnetic loop assembly and cover top portion to stretch out described cover top portion.
Preferably, also comprise a base, described base is located at the bottom of described shell and is coated described silica gel sucker.
A kind of moveable core audio-frequency transducer, comprise shell, voice coil loudspeaker voice coil, magnetic loop assembly and location elastic component, described magnetic loop assembly comprises soft iron and magnet, described magnetic loop assembly by described location elastic component to be placed in the inside of described shell, one end of described location elastic component connects described magnetic loop assembly, and the other end connects described shell; Described voice coil loudspeaker voice coil comprises fixed part and coil portion, and described voice coil loudspeaker voice coil is fixed in described enclosure by described fixed part and described coil portion is wound between the soft iron and magnet of described magnetic loop assembly.
Compared with prior art, the utility model moveable core audio-frequency transducer is simple in structure, make easy to assembly, utilize the combined magnetic loop assembly of soft iron and magnet along axially vibration back and forth of voice coil loudspeaker voice coil, its bigger quality makes its kinetic energy that obtains and motional inertia also bigger, thereby pass to the vibrational energy of the contacted object medium of this moveable core audio-frequency transducer also bigger, the object medium can produce violent vibration when obtaining big vibrational energy, if the object medium be the plane with the large-area sound that it sends will be 360 the degree towards periphery the diffusion, it has not only solved a little less than the vibration that the traditional electrical acoustic transmission system produces the object medium that is in contact with it and the sharp-pointed defective of sound directivity as mentioned above, and because its outstanding low frequency characteristic also can be used as a kind of audio frequency vibration massager human body is played the effect of good audio frequency vibration health care massage.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is the overall schematic of first embodiment of the utility model moveable core audio-frequency transducer.
Fig. 2 is the structural representation of moveable core audio-frequency transducer shown in Figure 1.
Fig. 3 is the structural representation of the magnetic loop assembly of moveable core audio-frequency transducer shown in Figure 2.
Fig. 4 is the structural representation of second embodiment of the utility model moveable core audio-frequency transducer.
Fig. 5 is the structural representation of the 3rd embodiment of the utility model moveable core audio-frequency transducer.
Fig. 6 is the structural representation of the 4th embodiment of the utility model moveable core audio-frequency transducer.
Fig. 7 is the structural representation of the 5th embodiment of the utility model moveable core audio-frequency transducer.
Fig. 8 is the structural representation of the 6th embodiment of the utility model moveable core audio-frequency transducer.
Fig. 9 is the structural representation of the 7th embodiment of the utility model moveable core audio-frequency transducer.
Figure 10 is the structural representation of the 8th embodiment of the utility model moveable core audio-frequency transducer.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the utility model provide a kind of simple in structure, make moveable core audio-frequency transducer easy to assembly, not only solved a little less than the vibration that the traditional electrical acoustic transmission system produces the object medium that is in contact with it and the sharp-pointed defective of sound directivity, and can be used as a kind of audio frequency vibration massager human body is played the effect of good audio frequency vibration health care massage.
Please refer to Fig. 1～3, be the overall schematic of first embodiment of the utility model moveable core audio-frequency transducer.The utility model moveable core audio-frequency transducer 100 comprise shell 110, voice coil loudspeaker voice coil 120, magnetic loop assembly 130, on locate elastic component 140, locate elastic component 150, silica gel sucker 160, silicagel pad 170 and silicone tube 180 down,
Described magnetic loop assembly 130 is butted on the bottom interior surface 1131 of described shell 110 with the ccontaining inside 111 of being fixed in described shell 110 by top inner surface 1121 and the described location down elastic component 150 that described upward location elastic component 140 is butted on described shell 110.Particularly, as shown in Figure 3, described magnetic loop assembly 130 is made up of soft iron and magnet, described soft iron comprises U iron 131 and magnetic conduction pole piece 133, described magnet comprises inner magnet 132 and outer magnet 134, and described inner magnet 132, magnetic conduction pole piece 133 and outer magnet 134 are placed in the inside 1311 of described U iron 131 successively and are fixed up by adhesive.Described inner magnet 132 and outer magnet 134 stick in the upper and lower surface of described magnetic conduction pole piece 133 respectively and polarity are provided with in the same way.Described inner magnet 132, magnetic conduction pole piece 133 and outer magnet 134 leave the gap with the inner ring surface 1312 of described U iron 131.Described voice coil loudspeaker voice coil 120 comprises fixed part 121 and coil portion 122, described voice coil loudspeaker voice coil is fixed in the voice coil loudspeaker voice coil holddown groove 118 of described shell 110 by described fixed part 121, and described coil portion 122 is wound in the gap between the inner ring surface 1312 of described inner magnet 132, magnetic conduction pole piece 133 and the outer magnet 134 of described magnetic loop assembly 130 and described U iron 131.
Please refer to Fig. 2, a described end of going up location elastic component 140 is fixed in the top inner surface 1121 of described shell 110 by adhesive, and the other end is fixed in the upper surface 1313 of the U iron 131 of described magnetic loop assembly 130 by adhesive.One end of described down location elastic component 150 is fixed in the bottom interior surface 1131 of described shell 110 by adhesive, and the other end is fixed in the outer surface 1343 of the outer magnet 134 of described magnetic loop assembly 130 by adhesive.Therefore, described magnetic loop assembly 130 can be fixed in the inside 111 of described shell 110 and moves back and forth described inner 111 by described location elastic component 140 and the described location down elastic component 150 gone up.Preferably, describedly go up location elastic component 140, locate elastic component 150 down and be two.Described silicagel pad 170 be fixed in by adhesive described magnetic loop assembly 130 U iron 131 upper surface 1313 and on described two the location elastic component 140 between; to play anti-overshoot protection effect, prevent that described magnetic loop assembly 130 from bumping against with the top 112 of described shell 110 in moving back and forth.Described silicone tube 180 places between the bottom interior surface 1131 of the lower surface 1314 of U iron 131 of described magnetic loop assembly 130 and described shell 110, to play the vibration cushioning effect, prevent that described magnetic loop assembly 130 from bumping against with the bottom 113 of described shell 110 in moving back and forth.Described silica gel sucker 160 is fixed in the bottom outer surface 1132 of described shell 110 by adhesive, described silica gel sucker 160 plays buffering as the contact medium between this moveable core audio-frequency transducer and the object medium and prevents vibration noise and the fixing effect of absorption, described silica gel sucker 160 outer edges go out to declivity, thereby it is just tight more to vibrate its absorption fixation to the planar object medium more.
When to described voice coil loudspeaker voice coil 120 input electrical signals, the audio frequency alternating magnetic field that described voice coil loudspeaker voice coil 120 produces promotes described magnetic loop assembly 130 to be made it obtain kinetic energy and produces back and forth audio frequency vibration along described voice coil loudspeaker voice coil 120 axial directions, the audio frequency vibration acting in opposition of described magnetic loop assembly 130 is on described shell 110, because the mass ratio of described magnetic loop assembly 130 big (kinetic energy of acquisition and motional inertia are also bigger) opposition that described shell 110 is obtained is also big, thereby described shell 110 can access the vibrating effect bigger than the structural housing of traditional loudspeaker, described shell 110 passes to audio signal and described shell 110 contacted object media as audio output device again, make the object medium make corresponding audio frequency vibration and sound, if contacting with shell mechanism is human body, thereby human body also produces audio frequency vibration acquisition audio frequency vibration massage effect thereupon.
Please refer to Fig. 4, be the structural representation of second embodiment of the utility model moveable core audio-frequency transducer.First embodiment is identical with the utility model moveable core audio-frequency transducer, the moveable core audio-frequency transducer 200 that Fig. 4 shows comprise shell 210, voice coil loudspeaker voice coil 220, magnetic loop assembly 230, on locate elastic component 240, locate elastic component 250, silica gel sucker 260, silicagel pad 270 and silicone tube 280 down, described magnetic loop assembly 230 is gone up top inner surface 2121 and the described location down elastic component 250 that location elastic component 240 is butted on described shell 210 and is butted on the bottom interior surface 2131 of described shell 210 with the ccontaining inside 211 of being fixed in described shell 210 by described.Present embodiment is with the different of first embodiment: described magnetic loop assembly 230 comprises U iron 231, inner magnet 232 and magnetic conduction pole piece 233, and described inner magnet 232 and magnetic conduction pole piece 233 are placed in the inside 2311 of described U iron 231 successively and are fixed up by adhesive.
Fig. 5 is the structural representation of the 3rd embodiment of the utility model moveable core audio-frequency transducer.First embodiment is identical with the utility model moveable core audio-frequency transducer, the moveable core audio-frequency transducer 300 that Fig. 5 shows comprise shell 310, voice coil loudspeaker voice coil 320, magnetic loop assembly 330, on locate elastic component 340, locate elastic component 350, silica gel sucker 360, silicagel pad 370 and silicone tube 380 down, described magnetic loop assembly 330 is gone up top inner surface 3121 and the described location down elastic component 350 that location elastic component 340 is butted on described shell 310 and is butted on the bottom interior surface 3131 of described shell 310 with the ccontaining inside 311 of being fixed in described shell 310 by described.Present embodiment is with the different of first embodiment: also comprise a push rod 390, the top 312 of described magnetic loop assembly 330 and described shell 310, the center correspondence of bottom 313 are provided with perforate, one end of described push rod 390 is fixed in described silica gel sucker 360, and the other end passes the perforate of described outer casing bottom 312, magnetic loop assembly 330 and cover top portion 313 to stretch out described cover top portion 313.Described push rod 390 can be strengthened the suction-operated of described silica gel sucker 360.
Fig. 6 is the structural representation of the 4th embodiment of the utility model moveable core audio-frequency transducer.First embodiment is identical with the utility model moveable core audio-frequency transducer, the moveable core audio-frequency transducer 400 that Fig. 6 shows comprise shell 410, voice coil loudspeaker voice coil 420, magnetic loop assembly 430, on locate elastic component 440, locate elastic component 450, silica gel sucker 460, silicagel pad 470 and silicone tube 480 down, described magnetic loop assembly 430 is gone up top inner surface 4121 and the described location down elastic component 450 that location elastic component 440 is butted on described shell 410 and is butted on the bottom interior surface 4131 of described shell 410 with the ccontaining inside 411 of being fixed in described shell 410 by described.Present embodiment is with the different of first embodiment: also comprise base 490, described base 490 is located at the bottom 413 of described shell 410 and is coated described silica gel sucker 460.
Understandably, except above-mentioned first embodiment can comprise the base, above-mentioned second and third embodiment can comprise that all a base coats the silica gel sucker, does not influence implementation result of the present utility model.
Fig. 7 is the structural representation of the 5th embodiment of the utility model moveable core audio-frequency transducer.First embodiment is identical with the utility model moveable core audio-frequency transducer, the moveable core audio-frequency transducer 500 that Fig. 7 shows comprises shell 510, voice coil loudspeaker voice coil 520, magnetic loop assembly 530, last location elastic component 540, under locate elastic component 550, silica gel sucker 560 and silicone tube 580, present embodiment is with the different of first embodiment: described magnetic loop assembly 530 is butted on the sidepiece inner surface 513 of described shell 510 with the ccontaining inside of being fixed in described shell 510 by sidepiece inner surface 513 and the described location down elastic component 550 that described upward location elastic component 540 is butted on described shell 510.And present embodiment does not comprise silicagel pad; between the top 531 of described magnetic loop assembly 530 and the top inner surface 511 of described shell 510, be equipped with described silicone tube 580 between the bottom interior surface 512 of the bottom 532 of described magnetic loop assembly 530 and described shell 510; to play anti-overshoot protection effect, prevent that described magnetic loop assembly 530 from bumping against with the top inner surface 511 or the bottom interior surface 512 of described shell 510 in moving back and forth.
Fig. 8 is the structural representation of the 6th embodiment of the utility model moveable core audio-frequency transducer.The 5th embodiment is identical with the utility model moveable core audio-frequency transducer, the moveable core audio-frequency transducer 600 that Fig. 8 shows comprises shell 610, voice coil loudspeaker voice coil 620, magnetic loop assembly 630, silica gel sucker 660 and silicone tube 680, present embodiment is with the different of the 5th embodiment: present embodiment moveable core audio-frequency transducer 600 only comprises location elastic component 650 down, the sidepiece inner surface 613 that described magnetic loop assembly 630 is butted on described shell 610 by described down location elastic component 650 is with between the sidepiece inner surface 613 that is fixed in described shell 610, thereby is placed in the inside of described shell 610.Understandably, the moveable core audio-frequency transducer 600 of present embodiment also can only comprise the location elastic component, does not influence implementation result of the present utility model.
By above-mentioned two embodiment as can be known, the quantity of location of the present utility model elastic component and position are provided with the embodiment that is not limited to above announcement, as long as the location elastic component plays positioning action, the magnetic loop assembly of moveable core audio-frequency transducer fixedly is placed in enclosure gets final product, the quantity of location elastic component and position are provided with can do change arbitrarily according to demand.
Fig. 9 is the structural representation of the 7th embodiment of the utility model moveable core audio-frequency transducer.The 5th embodiment is identical with the utility model moveable core audio-frequency transducer, the moveable core audio-frequency transducer 700 that Fig. 9 shows comprises shell 710, voice coil loudspeaker voice coil 720, magnetic loop assembly 730, last location elastic component 740, under locate elastic component 750, silica gel sucker 760 and silicone tube 780, present embodiment is with the different of the 5th embodiment: described magnetic loop assembly 730 is made up of soft iron and magnet 732, described soft iron comprises T iron 731 and magnetic conduction pole piece 733, described magnet 732, magnetic conduction pole piece 733 gluing successively is fixed on the described T iron 731 and leaves the gap with the center extension 7311 of described T iron 731, and the coil portion 722 of described voice coil loudspeaker voice coil 720 is wound in the described gap.
Figure 10 is the structural representation of the 8th embodiment of the utility model moveable core audio-frequency transducer.The 7th embodiment is identical with the utility model moveable core audio-frequency transducer, the moveable core audio-frequency transducer 800 that Fig. 9 shows comprises shell 810, voice coil loudspeaker voice coil 820, magnetic loop assembly 830, last location elastic component 840, under locate elastic component 850, silica gel sucker 860 and silicone tube 880, present embodiment is with the different of the 5th embodiment: described magnetic loop assembly 830 is made up of soft iron and magnet, described soft iron comprises T iron 831, U iron 832 and magnetic conduction pole piece 833, described magnet comprises inner magnet 834 and outer magnet 835, described magnetic conduction pole piece 833 is fixed on the described U iron 832 by described outer magnet 835 gluings and leaves the gap with the center extension 8311 of described T iron 831, and the T iron 831 that gluing is fixed with described magnetic conduction pole piece 833 and outer magnet 835 is placed in the inside of described U iron 832 by described inner magnet 834 and is fixed up by adhesive.And the coil portion 822 of described voice coil loudspeaker voice coil 820 is wound in the described gap.
By above-mentioned two embodiment as can be known, magnetic loop assembly of the present utility model mainly is made up of soft iron and magnet, and the shape of soft iron and magnet, quantity and annexation are not limited to the embodiment of above announcement, as long as make described magnetic loop assembly under the audio frequency action of alternating magnetic field that described voice coil loudspeaker voice coil produces, can obtain kinetic energy and the audio frequency vibration that produces back and forth along the axial direction of described voice coil loudspeaker voice coil gets final product.
In addition, other is fixed with elastic filling material and is combined into cushion with a plurality of moveable core audio-frequency transducers of the present utility model, and works simultaneously by being electrically connected, and can form better music cushion of effect or massage cushion and use.
In sum, the utility model moveable core audio-frequency transducer is by sounding with the contacted large tracts of land object of shell mechanism medium, and its output Oscillation Amplitude is big and strong, so solved the inherent shortcoming of small size loudspeaker output bass deficiency.Because the utility model need not the resonance casing of traditional audio amplifier, thereby very little by the small product size of its design, make to its product to be easy to carry and to be very suitable for using as the compact audio vibrator for massage.
Abovely the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to essence of the present utility model in conjunction with most preferred embodiment.
Claims (8)
1. moveable core audio-frequency transducer, comprise shell, voice coil loudspeaker voice coil, magnetic loop assembly and upper and lower location elastic component, it is characterized in that: described magnetic loop assembly comprises soft iron and magnet, and described magnetic loop assembly is butted on the bottom interior surface of described shell with the ccontaining inside of being fixed in described shell by top inner surface and the described location down elastic component that described upward location elastic component is butted on described shell; Described voice coil loudspeaker voice coil comprises fixed part and coil portion, and described voice coil loudspeaker voice coil is fixed in the voice coil loudspeaker voice coil holddown groove of described shell by described fixed part and described coil portion is wound between the soft iron and magnet of described magnetic loop assembly.
2. moveable core audio-frequency transducer as claimed in claim 1, it is characterized in that: the soft iron of described magnetic loop assembly comprises U iron and magnetic conduction pole piece, described magnetic conduction pole piece and described magnet are ccontaining to be fixed in the inside of described U iron and to be provided with the gap with described U iron inner ring surface, and the coil portion of described voice coil loudspeaker voice coil is wound in the described gap.
3. moveable core audio-frequency transducer as claimed in claim 2 is characterized in that: described magnet comprises inner magnet and outer magnet, and upper and lower surface and polarity that described inner magnet and outer magnet are connected to described magnetic conduction pole piece are provided with in the same way.
4. moveable core audio-frequency transducer as claimed in claim 1 is characterized in that: also comprise silicagel pad and silicone tube, described silicagel pad is located at the upper surface of described magnetic loop assembly to play anti-overshoot protection effect; Described silicone tube places between the bottom interior surface of the lower surface of described magnetic loop assembly and described shell to play a vibration cushioning effect.
5. as each described moveable core audio-frequency transducer in the claim 1～4, it is characterized in that: also comprise the silica gel sucker, described silica gel sucker is fixed in the bottom outer surface of described shell.
6. moveable core audio-frequency transducer as claimed in claim 5, it is characterized in that: also comprise a push rod, the center correspondence of the top of described magnetic loop assembly and described shell, bottom is provided with perforate, one end of described push rod is fixed in described silica gel sucker, and the other end passes the perforate of described outer casing bottom, magnetic loop assembly and cover top portion successively to stretch out described cover top portion.
7. moveable core audio-frequency transducer as claimed in claim 5 is characterized in that: also comprise a base, described base is located at the bottom of described shell and is coated described silica gel sucker.
8. moveable core audio-frequency transducer, comprise shell, voice coil loudspeaker voice coil, magnetic loop assembly and location elastic component, it is characterized in that: described magnetic loop assembly comprises soft iron and magnet, described magnetic loop assembly by described location elastic component to be placed in the inside of described shell, one end of described location elastic component connects described magnetic loop assembly, and the other end connects described shell; Described voice coil loudspeaker voice coil comprises fixed part and coil portion, and described voice coil loudspeaker voice coil is fixed in described enclosure by described fixed part and described coil portion is wound between the soft iron and magnet of described magnetic loop assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201892874U CN201708921U (en) | 2010-03-16 | 2010-04-29 | Moving-core-type audio-frequency transducer |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020135290.8 | 2010-03-16 | ||
| CN201020135290 | 2010-03-16 | ||
| CN2010201892874U CN201708921U (en) | 2010-03-16 | 2010-04-29 | Moving-core-type audio-frequency transducer |
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| Publication Number | Publication Date |
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| CN201708921U true CN201708921U (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201892874U Expired - Fee Related CN201708921U (en) | 2010-03-16 | 2010-04-29 | Moving-core-type audio-frequency transducer |
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| CN (1) | CN201708921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018157668A1 (en) * | 2017-02-28 | 2018-09-07 | 汉得利（常州）电子股份有限公司 | Sound-producing vibration two-in-one exciter applicable to touch screen |
| CN111773059A (en) * | 2020-08-14 | 2020-10-16 | 北京身心康科技有限公司 | Audio transducer, sound wave treatment equipment and sound wave treatment system |
-
2010
- 2010-04-29 CN CN2010201892874U patent/CN201708921U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018157668A1 (en) * | 2017-02-28 | 2018-09-07 | 汉得利（常州）电子股份有限公司 | Sound-producing vibration two-in-one exciter applicable to touch screen |
| CN111773059A (en) * | 2020-08-14 | 2020-10-16 | 北京身心康科技有限公司 | Audio transducer, sound wave treatment equipment and sound wave treatment system |
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