CN201369816Y - Micro type sound generator - Google Patents
Micro type sound generator Download PDFInfo
- Publication number
- CN201369816Y CN201369816Y CNU2009201299566U CN200920129956U CN201369816Y CN 201369816 Y CN201369816 Y CN 201369816Y CN U2009201299566 U CNU2009201299566 U CN U2009201299566U CN 200920129956 U CN200920129956 U CN 200920129956U CN 201369816 Y CN201369816 Y CN 201369816Y
- Authority
- CN
- China
- Prior art keywords
- pedestal
- loam cake
- base
- acoustic generator
- upper cover
- 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.)
- Expired - Lifetime
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Abstract
The utility model provides a micro type sound generator which mainly comprises a base, a magnetic bowl, a magnetic steel, a coil, a vibration diaphragm and an upper cover. The magnetic bowl is embedded in the base, the magnetic steel is contained in the magnetic bowl, part of the coil is contained in a magnetic gap which is formed by the magnetic bowl and the magnetic steel, the vibration diaphragm is connected at one end of the coil, the above elements are contained in the upper cover, and the upper cover forms a containing cavity together with the base; the base comprises an upper surface near the upper cover, the upper cover comprises a lower surface near the base, a plurality of welding ribs are arranged at the rim of the upper surface or the lower surface, and the base is not completely jointed with the upper cover due to the welding ribs. As the welding ribs are arranged between the base and the upper cover, when the base and the upper cover are welded together, the height of the micro type sound generator can be adjusted by the welding ribs, so as to meet the need of the sound generator for the height.
Description
Technical field
The utility model relates to a kind of minitype acoustic generator, relates in particular to a kind of minitype acoustic generator that is applied on the portable consumer electronic products such as mobile phone.
Background technology
Mini-sound device is widely used in portable electronic equipments such as mobile phone, notebook computer, hearing aids.Along with fast development, the people of these portable electronic equipments are more and more stronger to its functional requirement, the also corresponding development apace of the mini-sound device that is applied thereon.
The minitype acoustic generator of dependency structure mainly comprises as bowl-shape pedestal, joins with pedestal and be provided with the loam cake in hole, and pedestal and loam cake form a cavity volume.Be provided with in this cavity volume and be contained in the pedestal and link to each other with pole piece, with the vibrating diaphragm of loam cake adjacency, with vibrating diaphragm with permanent magnet that pedestal forms magnetic gap and be suspended in voice coil loudspeaker voice coil in the described magnetic gap, outside pedestal, be provided with the circuit board that realization links to each other with external circuit, the passing the hole that pedestal is provided with into and out of line and link to each other of voice coil loudspeaker voice coil with circuit board.When feeding the alternation tone currents on circuit board, when feeding alternating current in the coil, voice coil loudspeaker voice coil can be because the effect in magnetic field produces motion in magnetic gap, variation along with electric current, this motion also can change thereupon, thereby drives the vibrating diaphragm up-down vibration, causes the generation of sound.
But the Microspeaker of this dependency structure will be in the time will designing, and after the product height overall is determined, can paste dead between pedestal and the upper cover plate fully.But, often having near the tolerance upper limit or the bad problem that surpasses the tolerance upper limit and take place, this moment, the total height of product reality can't be regulated, and can't satisfy the needs of product to height.
Thereby, be necessary to study a kind of Microspeaker with new construction.
The utility model content
The minitype acoustic generator that provides a kind of height to regulate is provided the technical problems to be solved in the utility model.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is:
A kind of minitype acoustic generator, it mainly comprises pedestal, be embedded in magnetic bowl in the pedestal, be contained in the vibrating diaphragm that magnet steel, part in the magnetic bowl is contained in coil in the magnetic gap of magnetic bowl and magnet steel formation, is connected in coil one end, said elements is held wherein loam cake, this loam cake and pedestal form host cavity jointly, described pedestal comprises the upper surface near loam cake, loam cake comprises the lower surface near pedestal, be provided with some welding muscle at the edge of upper surface or lower surface, not exclusively fit between pedestal and the loam cake because the welding muscle makes.
Preferably, described welding muscle is step-like.
Preferably, described minitype acoustic generator also comprises the pole piece that posts on described magnet steel.
Preferably, the height in described slit is between the 0.05-0.10mm.
The beneficial effects of the utility model are: owing to be provided with the welding muscle between pedestal and loam cake, when pedestal and loam cake are welded together, can regulate the height of minitype acoustic generator by the welding muscle, satisfy minitype acoustic generator to needs highly.
Description of drawings
Fig. 1 is the stereogram that the utility model provides minitype acoustic generator;
Fig. 2 is the perspective exploded view of the minitype acoustic generator that provides of the utility model;
Fig. 3 is the profile that the utility model provides;
Fig. 4 is the enlarged drawing of A part among Fig. 3.
Embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments.
Referring to Fig. 1, the utility model minitype acoustic generator 1 is mainly used on the portable consumer electronic products such as mobile phone, in order to the prompting of sounding.
In general, minitype acoustic generator mainly comprises as bowl-shape pedestal, joins with pedestal and be provided with the loam cake in hole, and pedestal and loam cake form a cavity volume.Be provided with in this cavity volume and be contained in the pedestal and link to each other with pole piece, with the vibrating diaphragm of loam cake adjacency, with vibrating diaphragm with permanent magnet that pedestal forms magnetic gap and be suspended in voice coil loudspeaker voice coil in the described magnetic gap, outside pedestal, be provided with the circuit board that realization links to each other with external circuit, the passing the hole that pedestal is provided with into and out of line and link to each other of voice coil loudspeaker voice coil with circuit board.When feeding the alternation tone currents on circuit board, voice coil loudspeaker voice coil is subjected to the motive force of alternation in magnetic gap, produces alternate motion, thereby drives the vibrating diaphragm vibration, sounds.
Please join Fig. 2, be depicted as the three-dimensional exploded view of the utility model Microspeaker 1, this Microspeaker 1 comprises pedestal 11, be embedded in magnetic bowl 12 in the pedestal 11, be contained in magnet steel 13 in the magnetic bowl 12, post the vibrating diaphragm 16 that pole piece 14, part on magnet steel 13 is contained in coil 15 in the magnetic gap that magnetic bowl 12 and magnet steel 13 form, is connected in coil 15 1 ends, and forms host cavities and said elements is held wherein loam cake 17 with pedestal 11 is common.When feeding alternating current in the coil 15, the coil 15 that is in the magnetic gap can be because the effect in magnetic field produces motion, and along with the variation of electric current, this motion also can change thereupon, thereby drives vibrating diaphragm 16 up-down vibration, causes the generation of sound.
Referring to Fig. 3 and Fig. 4, pedestal 11 is provided with step-like welding muscle 111, leaves slit 117 because the existence of welding muscle 111 makes between pedestal 11 and loam cake 17, and promptly pedestal 11 is not exclusively fitted with loam cake 17.The height in this slit 117 is between the 0.05-0.10mm.Like this, when pedestal 11 and loam cake 17 are welded together, the method of welding can adopt ultrasonic bonding, but be not limited to ultrasonic bonding, the total height of regulating product by the height of regulating 111 fusings of welding muscle, also can guarantee product height dimension trend central value after 117 closures of slit, satisfy the needs of product height.Certainly, welding muscle 111 is not limited to be arranged on the pedestal 11, also can be arranged on the loam cake 17.
For the minitype acoustic generator that obtains highly can regulating, the method that adopts is: loam cake and pedestal are provided, loam cake or pedestal are provided with the welding muscle, pedestal and loam cake form host cavity, winding loam cake and pedestal leave the slit because the welding muscle makes between pedestal and loam cake, utilize welding manner winding loam cake and pedestal, when pedestal and loam cake are welded together, the total height of highly regulating minitype acoustic generator by the fusing of regulating the welding muscle.
In the utility model, wish to get the minitype acoustic generator that leaves slit 117 between aforesaid pedestal 11 and the loam cake 17, can adopt following method: provide minitype acoustic generator 1 required element, comprise loam cake 17 and pedestal 11, pedestal 11 forms host cavity in order to place other elements with loam cake 17, and pedestal 11 or loam cake 17 are provided with the welding muscle; In that being assembled, other elements are positioned in the described host cavity, because the existence of welding muscle 111 makes and leaves slit 117 between pedestal 11 and the loam cake 17; When pedestal 11 and loam cake 17 are welded together, can weld the total height that muscle 111 is regulated minitype acoustic generator 1 by control, with the minitype acoustic generator 1 that obtains highly can regulating.
Above-described only is execution mode of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (4)
1, a kind of minitype acoustic generator, it mainly comprises pedestal, be embedded in magnetic bowl in the pedestal, be contained in the vibrating diaphragm that magnet steel, part in the magnetic bowl is contained in coil in the magnetic gap of magnetic bowl and magnet steel formation, is connected in coil one end, said elements is held wherein loam cake, this loam cake and pedestal form host cavity jointly, it is characterized in that: described pedestal comprises the upper surface near loam cake, loam cake comprises the lower surface near pedestal, be provided with some welding muscle at the edge of upper surface or lower surface, not exclusively fit between pedestal and the loam cake because the welding muscle makes.
2, minitype acoustic generator according to claim 1 is characterized in that: described welding muscle is step-like.
3, minitype acoustic generator according to claim 1 is characterized in that: described minitype acoustic generator also comprises the pole piece that posts on described magnet steel.
4, minitype acoustic generator according to claim 1 and 2 is characterized in that: the height in described slit is between the 0.05-0.10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201299566U CN201369816Y (en) | 2009-02-20 | 2009-02-20 | Micro type sound generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201299566U CN201369816Y (en) | 2009-02-20 | 2009-02-20 | Micro type sound generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369816Y true CN201369816Y (en) | 2009-12-23 |
Family
ID=41488703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201299566U Expired - Lifetime CN201369816Y (en) | 2009-02-20 | 2009-02-20 | Micro type sound generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201369816Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056059A (en) * | 2011-01-05 | 2011-05-11 | 瑞声声学科技(深圳)有限公司 | Multifunctional acoustic generator |
-
2009
- 2009-02-20 CN CNU2009201299566U patent/CN201369816Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056059A (en) * | 2011-01-05 | 2011-05-11 | 瑞声声学科技(深圳)有限公司 | Multifunctional acoustic generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |
|
| CX01 | Expiry of patent term |