CN202121478U

CN202121478U - Linear vibration motor

Info

Publication number: CN202121478U
Application number: CN2011201790625U
Authority: CN
Inventors: 董乐平; 许洪富; 周仕
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Priority date: 2011-05-31
Filing date: 2011-05-31
Publication date: 2012-01-18
Anticipated expiration: 2021-05-31

Abstract

The utility model provides a linear vibration motor, which comprises a pedestal having an accommodation space, a vibrator accommodated in the accommodation space, a spring part elastically connecting the vibrator with the pedestal, and a baffle plate, wherein the pedestal is provided with a substrate and sides walls forming the accommodation space together with the substrate, the spring part is provided with a fixing part connected with the vibrator, an elastic arm extending out of the fixing part, and a joint part extending out of the elastic arm and pasted on the side walls, and the baffle plate comprises a first baffle sheet clamping the joint part together with the side walls and a second baffle sheet bending along and extending out of the first baffle sheet and fixed on the pedestal. The linear vibration motor can protect the spring part.

Description

Linear vibration electric motor

[technical field]

The utility model relates to a kind of vibrating motor, relates in particular to a kind of linear vibration electric motor that is used for the flat of 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 linear vibration electric motor more and that vibrating motor better performances is a flat at present; The linear vibration electric motor relevant with the utility model mainly comprises spring part, the oscillator that is connected with spring part and the pedestal of accommodating said spring part and oscillator; Said spring part is provided with the fixed part that is connected with oscillator, along the extended elasticity arm of fixed part and extended and be engaged in the junction surface of pedestal along elasticity arm; Said junction surface be provided with near the first surface of oscillator and with the first surface opposing second surface; Said second surface is connected with pedestal, and said linear vibration electric motor also comprises the baffle plate that places first surface that is connected with said junction surface, and said baffle plate places on the first surface; Earlier baffle plate and spring part are welded together, and then baffled spring part is welded on the shell.Motor oscillator is when motion, and the stress at the junction surface of spring part will be loose by spot welding punishment, thereby the protection solder joint.But linear vibration electric motor spring part when work produces motion, a baffle plate starting thereupon, and the effect of solder joint protection is not obvious, and the welding of baffle plate and spring part also can cause the damage of spring part material.

Therefore, be necessary to provide a kind of novel linear vibration electric motor to overcome the problems referred to above.

[utility model content]

The utility model provides a kind of linear vibration electric motor with the structure that can protect spring part.

The technical scheme of the utility model is following: a kind of linear vibration electric motor; It comprises that the pedestal with spatial accommodation, the oscillator that is contained in spatial accommodation and elasticity connect the spring part of oscillator and pedestal; Said pedestal is provided with substrate and constitutes the sidewall of spatial accommodation with said substrate; Said spring part is provided with the fixed part that is connected with oscillator, along the extended elasticity arm of fixed part and extended and fit in the junction surface of said sidewall along elasticity arm; Said linear vibration electric motor also comprises baffle plate, and said baffle plate comprises second catch on the said pedestal that is fixed in that bends extension with first catch at the said junction surface of the common clamping of said sidewall and along said first catch.

Preferably, said first catch is vertical each other with second catch.

Preferably, said second catch is fixed in the said substrate.

Preferably, said fixed part comprises first fixed part that is connected with elasticity arm and second fixed part that extends along first fixed part, and said first fixed part is vertical each other with second fixed part, and is connected to two adjacent side of oscillator respectively.

Preferably, said baffle plate is between the junction surface and first fixed part.

Preferably, said elasticity arm is V-shaped, the support sector that comprises pars intermedia and be positioned at said pars intermedia both sides.

Preferably, said support sector is provided with some through holes.

Preferably, the portion of connecing of said spring part is spot welded to the sidewall of said pedestal.

Preferably, said spring part is two and lays respectively at the both sides of said oscillator, corresponding, said baffle plate also is two.

Preferably, the separable junction surface that is held in said spring part of said first catch.

The beneficial effect of the utility model is: baffle plate is provided with orthogonal first catch and second catch; The junction surface of the said spring part of the common clamping of the sidewall of first catch and pedestal; Second catch is welded in the substrate of pedestal, because second catch is fixed on the pedestal, spring part is when motion; Baffle plate can movement therewith, and the effect that solder joint protection stress disperses is more reliable.And since baffle plate need not with spring part spot welding, reduced the damage of spring part material.

[description of drawings]

Fig. 1 is the stereogram of the utility model linear vibration electric motor;

Fig. 2 is the cutaway view along the A-A line shown in Figure 1;

Fig. 3 is the three-dimensional exploded view of the utility model linear vibration electric motor;

Fig. 4 is the part-structure stereogram of the utility model linear vibration electric motor.

[embodiment]

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

As shown in Figure 1; Be the utility model one embodiment linear vibration electric motor 100; With reference to Fig. 2 and shown in Figure 3, it comprise pedestal 16, with pedestal 16 windings form spatial accommodation loam cake 11, be contained in coil 15 in the spatial accommodation, be connected in the spring part 13 of pedestal 16 and be connected spring part 13 and be suspended on the oscillator 12 in the spatial accommodation by spring part 13.Linear vibration electric motor 100 also comprises the wiring board 17 that is fixed in pedestal 16 bottoms, and this wiring board 17 is provided with the pad 170 that is electrically connected with coil 15.

Pedestal 16 is provided with sidewall 161 and perpendicular to the substrate 160 of sidewall 161, the middle position of substrate 160 is provided with first through hole 162, and coil 15 is positioned at first through hole 162 and is fixed on the wiring board 17.Said sidewall 161 is provided with first solder joint 610 that is used for laser spot welding.Said pedestal 16 also is provided with a pair of relative protuberance 163 that court extends near oscillator 12 directions from the edge of first through hole 162, thereby said a pair of protuberance 163 is positioned at the position that coil 15 both sides can limit coil 15.

Oscillator 12 comprises balancing weight 121 and a pair of permanent magnet of arranging side by side 120, and balancing weight 121 is provided with second through hole 201 of accommodating permanent magnet 120, and permanent magnet 141 is connected in spring part 13 through balancing weight 121, and is suspended in the spatial accommodation by it.Permanent magnet 120 be positioned at coil 15 directly over, have the gap between coil 15 and the permanent magnet 120, the magnetic pole of permanent magnet 120 is over against coil 15.

Spring part 13 is provided with the fixed part 130 that is connected with the balancing weight 121 of oscillator 12; Said fixed part 130 comprises first fixed part 301 and second fixed part 302 that extends from the end bending of first fixed part 301; Said first fixed part 301 is vertical each other with second fixed part 302, and is connected to two adjacent side of balancing weight 121 respectively.Spring part 13 also comprises the V-type elasticity arm 131 that is extended by second fixed part 302; And from elasticity arm 131 ends extend towards second fixed part 302 and the junction surface 132 parallel with second fixed part 302; Junction surface 132 is spot welded to the sidewall 161 of said pedestal 16; Junction surface 132 be provided with near the first surface 1321 of oscillator 12 and with first surface 1321 opposing second surface 1322, second surface 1322 is fitted with the sidewall 161 of pedestal 16.The support sector 1311 that said elasticity arm 131 comprises pars intermedia 1312 and is positioned at said pars intermedia 1312 both sides, support sector 1311 is provided with some through holes, and V-structure and some through holes can increase the elasticity of spring part 13.Said junction surface 132 be provided with pedestal 16 sidewalls 161 on corresponding second solder joint 320 that is used for laser spot welding of first solder joint 610.

In the lump with reference to shown in Figure 4; In the utility model linear vibration electric motor 100; The L type baffle plate 14 that also comprises the substrate 160 of being fixed in pedestal 16; Said baffle plate is between the junction surface 132 and first fixed part 301, and said baffle plate 14 is provided with first catch 141 and from first catch, 141 vertically extending second catch 142.First surface 1321, the second catch 142 that said first catch 141 is connected to the junction surface 132 of spring part 13 utilize laser spot welding to be welded in the substrate 160.During assembling; Junction surface 132 with spring part 13 is welded on the sidewall 161 earlier; Again baffle plate 14 is packed into; Make first catch 141 and first surface 1321 butts, first catch 141 is welded in the substrate 160 with sidewall 161 common clamping said spring part 13 junction surfaces 132 and first catch, 141 separable said junction surface 132, the second catch 142 that are held in of substrate 16.Thus, baffle plate 14 just can be along with spring part 13 motions when motion for spring part 13, and the effect that solder joint protection stress disperses is just more reliable; And baffle plate 14 also need not with spring part 13 spot welding, reduced the damage of the material of spring part 13, make linear vibration electric motor more reliable.

In above-mentioned utility model linear vibration electric motor 100, said spring part 13 is two and lays respectively at the both sides of said oscillator 12, corresponding, said baffle plate 14 also is two.

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. linear vibration electric motor; It comprises that the pedestal with spatial accommodation, the oscillator that is contained in spatial accommodation and elasticity connect the spring part of oscillator and pedestal; Said pedestal is provided with substrate and constitutes the sidewall of spatial accommodation with said substrate; Said spring part is provided with the fixed part that is connected with oscillator, along the extended elasticity arm of fixed part and extended and fit in the junction surface of said sidewall along elasticity arm; It is characterized in that: said linear vibration electric motor also comprises baffle plate, and said baffle plate comprises second catch on the said pedestal that is fixed in that bends extension with first catch at the said junction surface of the common clamping of said sidewall and along said first catch.

2. linear vibration electric motor according to claim 1 is characterized in that: said first catch is vertical each other with second catch.

3. linear vibration electric motor according to claim 2 is characterized in that: said second catch is fixed in the said substrate.

4. linear vibration electric motor according to claim 3; It is characterized in that: said fixed part comprises first fixed part that is connected with elasticity arm and second fixed part that extends along first fixed part; Said first fixed part is vertical each other with second fixed part, and is connected to two adjacent side of oscillator respectively.

5. linear vibration electric motor according to claim 4 is characterized in that: said baffle plate is between the junction surface and first fixed part.

6. linear vibration electric motor according to claim 1 is characterized in that: said elasticity arm is V-shaped, the support sector that comprises pars intermedia and be positioned at said pars intermedia both sides.

7. linear vibration electric motor according to claim 6 is characterized in that: said support sector is provided with some through holes.

8. linear vibration electric motor according to claim 1 is characterized in that: the junction surface of said spring part is spot welded to the sidewall of said pedestal.

9. linear vibration electric motor according to claim 8 is characterized in that: said spring part is two and lays respectively at the both sides of said oscillator, corresponding, said baffle plate also is two.

10. linear vibration electric motor according to claim 9 is characterized in that: the separable junction surface that is held in said spring part of said first catch.