CN202135032U

CN202135032U - Vibrating motor

Info

Publication number: CN202135032U
Application number: CN 201120191281
Authority: CN
Inventors: 张雨晴
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Acoustic Technologies Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Technologies Holdings Changzhou Co Ltd; AAC Technologies Holdings Inc
Priority date: 2011-06-08
Filing date: 2011-06-08
Publication date: 2012-02-01
Anticipated expiration: 2021-06-08

Abstract

The utility model provides a vibrating motor, comprising a housing, an oscillator suspending in the housing, and a stator separated by a certain distance with the oscillator. A first bottom wall and a second bottom wall opposite to the first bottom wall for fixing the stator are arranged in the housing; the oscillator is provided with a mass block, a magnet cooperated with the mass block, a magnetic conductive plate covering on the magnet and a damping piece positioned on the magnetic conductive plate; the mass block is provided with a first surface facing towards the second bottom wall; the mass block is also provided with an abdicating space used for accommodating the magnetic conductive plate and the damping piece; the abdicating space is formed by the first surface sinking towards the direction of the first bottom wall; a second surface bearing the magnetic conductive plate is arranged at a bottom of the abdicating space; and the vertical distance between the first surface and the second surface is bigger than the thickness of the magnetic conductive plate. The product can guarantee the stability of the damping piece; and the problem that when the product falls, the damping piece is pressed and is difficult to be recovered to the original position is avoided.

Description

Vibrating motor

[technical field]

The utility model relates to a kind of vibrating motor, relates in particular to a kind of vibrating motor that is used for portable consumer property electronic product.

[background technology]

Along with development of electronic technology; Portable consumer property electronic product more and more receives pursuing of people; Like mobile phone, handheld device, guider or palm multimedia entertainment equipment etc.; Generally all can use vibrating motor and do system feedback, such as vibrational feedback of the incoming call prompting of mobile phone, information indicating, navigation hint, game machine etc.Use so widely, just require the performance of vibrating motor high, long service life.

Use vibrating motor more and that vibrating motor better performances is a flat at present; The vibrating motor relevant with the utility model mainly comprises housing, the coil that is contained in housing that is provided with spatial accommodation, the resilient support part that is connected in housing, is suspended on the oscillator of being made up of mass and permanent magnet of spatial accommodation by elastic supporting member for supporting optical member; Coil and oscillator are relative and separated by a distance, vibrate in order to drive vibrator.Wherein, be typically provided with the magnetic conductive board that covers permanent magnet on the surface of mass, magnetic conductive board is provided with the damping device that is used for limiting the oscillator amplitude, and this damping device adopts permeance fluid usually.

But the magnetic conductive board in the correlation technique is higher than the surface of mass, causes the space between magnetic conductive board and damping device and the housing too little.Because oscillator is suspended in the spatial accommodation; When product falls; Be easy to occur the phenomenon of oscillator collision housing; Permeance fluid on the magnetic conductive board can because of and housing between the little powerful extruding that receives housing in space, cause the permeance fluid large tracts of land to scatter and be difficult under the effect in magnetic field and return to initial position.Thereby, influence the stability of damping device greatly, be unfavorable for the performance of its damping, also can make product send noise, and then influence performance of products.

Therefore, be necessary to provide a kind of novel vibrating motor.

[utility model content]

The purpose of the utility model is to provide a kind of and is falling the vibrating motor that Shi Yineng guarantees its damping device stable performance.

The technical scheme of the utility model is following:

A kind of vibrating motor; It comprises housing, be suspended from oscillator in the housing, with oscillator stator separated by a distance; Said housing is provided with first diapire and second diapire relative with first diapire of fixed stator; Said oscillator is provided with mass, the magnet that cooperates with mass, is covered in the magnetic conductive board on the magnet and is positioned at the damping piece on the magnetic conductive board, and mass is provided with the first surface towards second diapire, wherein; Also be provided with on the said mass in order to accommodate the bit space that lets of magnetic conductive board and damping piece; This lets bit space formed to being arranged with near the first diapire direction by said first surface, and this let bit space bottom be provided with one carry magnetic conductive board second surface, the vertical range of said first surface to second surface is greater than the thickness of magnetic conductive board.

As a kind of improvement of the utility model, said first surface and second surface are parallel to each other.

As a kind of improvement of the utility model, the vertical range between first surface and the second surface is than the big 0.1mm of thickness of magnetic conductive board.

As a kind of improvement of the utility model, mass is provided with from second surface to two through holes that are arranged with near the first diapire direction, and the number of said magnet is two, and two magnets lay respectively in two through holes.

As a kind of improvement of the utility model, said damping piece is a permeance fluid, and this permeance fluid is adsorbed on the magnetic conductive board and the corresponding position of the outline of two magnets.

As a kind of improvement of the utility model, the part of said permeance fluid is positioned at the inboard of the outline of corresponding magnet, and another part is positioned at the outside of the outline of corresponding magnet.

As a kind of improvement of the utility model, said stator is a coil.

The beneficial effect of the utility model is: owing on mass, be provided with the bit space that lets of accommodating magnetic conductive board and damping piece; And this lets bit space be provided with from first surface to the second surface that extends and link to each other with magnetic conductive board away from the second diapire direction; Wherein, the vertical range of first surface to second surface is greater than the thickness of magnetic conductive board.Like this; Just strengthened the distance between magnetic conductive board and the housing,, thereby avoided when falling for the damping piece on the magnetic conductive board provides a space of enough restoring; Oscillator and housing clash into and cause damping piece seriously to be pushed and be difficult to recover the phenomenon of initial position; And then guaranteed the stability of damping piece to suppress noise, make its performance obtain favourable performance.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of a kind of embodiment of the utility model vibrating motor;

Fig. 2 is the cutaway view of a kind of embodiment of the utility model vibrating motor;

Fig. 3 is the cutaway view of regional A among Fig. 2.

[embodiment]

Below in conjunction with accompanying drawing and execution mode the utility model is described further.

As shown in Figure 1, vibrating motor 10 comprises the housing 11 that is provided with sidewall 112, be contained in stator 12 in the housing 11, be suspended from the housing 11 and with stator 12 oscillator 13 separated by a distance, the flexible member 14 that supports oscillator 13 and link to each other with the sidewall 112 of housing 11.In the present embodiment, stator 12 is coil, and housing 11 also is provided with and links to each other with sidewall 112 and first diapire 113 of fixed coil 12 and second diapire 114 relative with first diapire 113.

Housing 11 comprise shell 110 and with the substrate 111 of shell 110 windings, the sidewall 112 and second diapire 114 all are positioned on the shell 110, first diapire 113 is positioned on the substrate 111, also is provided with on the substrate 111 in order to the wiring board 17 of coil 12 signals of telecommunication to be provided.

Flexible member 14 is provided with the link 140 that links to each other with the edge of oscillator 13, from link 140 extended elasticity arms 141 and be positioned at the extending end of elasticity arm 141 and the stiff end 142 that links to each other with sidewall 112; Wherein, The number of flexible member 14 is two, and the both sides that occupy oscillator 13.

With reference to Fig. 2, oscillator 13 comprises the mass 130 that links to each other with the link 140 of flexible member 14, the magnet 131 that cooperates with mass 130, covers the magnetic conductive board 132 of magnet 131 and is positioned at the damping piece 133 on the magnetic conductive board 132.In the present embodiment, damping piece 133 is permeance fluid.Mass 130 is provided with the first surface 301 towards second diapire 114; Also be provided with on the mass 130 in order to what accommodate magnetic conductive board 132 and permeance fluid 133 and let bit space 302; This lets bit space 302 be arranged with to the direction near first diapire 113 by first surface and forms; And let bit space 302 bottoms that the second surface 303 of one carrying magnetic conductive board 132 is set, magnetic conductive board 132 is fixed on the second surface 303.In the present embodiment; First surface 301 is parallel to each other with second surface 303; Also be provided with on the mass 130 from second surface 303 to two through holes 304 that are arranged with near first diapire, 113 directions; The number of magnet 131 is two, and two magnets 131 are contained in respectively in two through holes 304, and with coil 12 over against.Magnetic conductive board 132 is combined closely with second surface 303 and two magnets 131; Permeance fluid 133 is adsorbed on the magnetic conductive board 132 and the corresponding position of the outline of two magnets; And the part of permeance fluid 133 is positioned at the inboard of the outline of corresponding magnet; Another part is positioned at the outside of the outline of corresponding magnet, like this, helps the effect that permeance fluid 133 receives magnets magnetic fields better.

Further with reference to Fig. 3; Distance between second surface 303 to the first surface 301 is d, and the thickness of magnetic conductive board 132 is h, then second surface 303 to first surface 301 apart from the thickness h of d greater than magnetic conductive board 132; As a kind of more excellent execution mode, apart from d than the big 0.1mm of thickness h.Like this; Abdicate suitably the space between second diapire 114 with housing 11 just can for permeance fluid 133 on the magnetic conductive board 132, when avoiding falling, oscillator 13 clashes into housings 11 and makes the permeance fluid that is clipped between the magnetic conductive board 132 and second diapire 114 receive strong extruding and be difficult to resile; Enough spaces have been arranged; Will guarantee that permeance fluid returns to initial position very soon after product falls under the effect in magnetic field, guarantee the performance of permeance fluid, make its damping bring into play better.

In the present embodiment; The both sides of the edge of mass 130 also are provided with towards sidewall 111 extensions and are positioned at two extensions 305 on its direction of vibration; This extension 305 is positioned at the diagonal of mass 130, but during oscillator 13 vibration, restriction flexible member 14 can bear the peak swing in oscillation space of oscillator 13; Prevent that flexible member 14 is stressed excessive and be out of shape, thus the protection flexible member.In the present embodiment, vibrating motor 10 also is provided with the buckle 15 that is used for fixing link 140 and mass 130.

Substrate 111 is provided with lid and is connected to the kink 102 that main part 101 and autonomous body 101 on the shell 110 vertically extend; This kink 102 links to each other with the stiff end 142 of flexible member 14, in order to disperse owing to spot welding concentrates on the connection stress between stiff end 142 and the sidewall 112.

In the present embodiment; Also being provided with two on the substrate 111 occupies coil 12 both sides and is fixed on the locating piece 16 on the substrate 111; This locating piece 16 is provided with the baffle plate 160 towards buckle 15, and this baffle plate 160 plays the phenomenon of avoiding oscillator 13 to strike sidewall 112 when falling and making a noise or damage.

Above-described only is the execution mode of the 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 the protection range of the utility model.

Claims

1. vibrating motor; It comprises housing, be suspended from oscillator in the housing, with oscillator stator separated by a distance; Said housing is provided with first diapire and second diapire relative with first diapire of fixed stator; Said oscillator is provided with mass, the magnet that cooperates with mass, is covered in the magnetic conductive board on the magnet and is positioned at the damping piece on the magnetic conductive board; Mass is provided with the first surface towards second diapire, it is characterized in that: also be provided with on the said mass in order to accommodate the bit space that lets of magnetic conductive board and damping piece, this lets bit space formed to being arranged with near the first diapire direction by said first surface; And this lets the bit space bottom that the second surface of one carrying magnetic conductive board is set, and the vertical range of said first surface to second surface is greater than the thickness of magnetic conductive board.

2. vibrating motor according to claim 1 is characterized in that: said first surface and second surface are parallel to each other.

3. vibrating motor according to claim 2 is characterized in that: the vertical range between first surface and the second surface is than the big 0.1mm of thickness of magnetic conductive board.

4. vibrating motor according to claim 3 is characterized in that: mass is provided with from second surface to two through holes that are arranged with near the first diapire direction, and the number of said magnet is two, and two magnets lay respectively in two through holes.

5. vibrating motor according to claim 4 is characterized in that: said damping piece is a permeance fluid, and this permeance fluid is adsorbed on the magnetic conductive board and the corresponding position of the outline of two magnets.

6. vibrating motor according to claim 5 is characterized in that: the part of said permeance fluid is positioned at the inboard of the outline of corresponding magnet, and another part is positioned at the outside of the outline of corresponding magnet.

7. according to any described vibrating motor of claim 1 to 6, it is characterized in that: said stator is a coil.