CN202167967U

CN202167967U - Linear vibration motor

Info

Publication number: CN202167967U
Application number: CN2011202493414U
Authority: CN
Inventors: 许洪富; 谭志勇; 周仕
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Acoustic Technologies Changzhou Co Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2011-07-15
Filing date: 2011-07-15
Publication date: 2012-03-14
Anticipated expiration: 2021-07-15

Abstract

The utility model provides a linear vibration motor comprising a base with a accommodating space, a vibrator taken in the accommodating space and a spring piece which elastically connects the vibrator and the base and vibrates the vibrator, wherein the base is provided with a side wall; the vibrator is provided with a side edge located on the vibration direction; the side wall consists of a limit block protruding into the accommodating space; the side edge consists of a limit slot which holds the limit block and enables the same move along the vibrating direction. The linear vibration motor provided by the utility model can protect the spring piece.

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 oscillator is provided with sidewall, and said sidewall is provided with the guide vane end stop that extends towards the spring part deformation direction.Product reaches one when being decided to be displacement in the process of falling, guide vane end stop can strike pedestal, the motion of restraining spring spare.But the linear vibration electric motor of this kind structure is when vibration, and the junction of spring part and oscillator can receive bigger impulse force, causes spring part to produce distortion, influences the performance of product after falling.

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 connection oscillator and pedestal are to make the spring part of oscillator vibration; Said pedestal is provided with sidewall; Said oscillator is provided with the side that is positioned on the direction of vibration, and said sidewall is provided with the guide vane end stop that protrudes out to said spatial accommodation, and said side is provided with and holds said guide vane end stop and can hold the stopper slot that said guide vane end stop moves along direction of vibration.

Preferably; The sidewall of said pedestal is provided with the first side wall and second sidewall adjacent with the first side wall, and 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 the first side wall along elasticity arm.

Preferably, said guide vane end stop is two, and lays respectively at the second relative sidewall; Corresponding, said stopper slot also is two.

Preferably, said oscillator comprises balancing weight and a pair of permanent magnet of arranging side by side, and said stopper slot is positioned on the balancing weight.

Preferably, said oscillator is provided with to the first side wall extended boss of deriving.

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

The beneficial effect of the utility model is: said linear vibration electric motor is provided with the guide vane end stop that is fixed on the pedestal sidewall; The side of said oscillator is provided with the stopper slot that holds guide vane end stop; Product is in falling process, and when oscillator moved to certain displacement, guide vane end stop will be run in the two ends of stopper slot; Limit the displacement of oscillator when falling thus, played the purpose of protection spring part.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of the utility model linear vibration electric motor;

Fig. 2 is the stereogram of the utility model linear vibration electric motor;

Fig. 3 is the cutaway view along the A-A line shown in Figure 2;

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.

Extremely shown in Figure 3 like Fig. 1; Be the utility model one embodiment linear vibration electric motor 100, it comprise pedestal 16, with pedestal 16 windings form spatial accommodation 164 loam cake 11, be contained in coil 15 in the spatial accommodation 164, 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; Sidewall 161 comprises the first side wall 1611 and second sidewall 1612 adjacent with the first side wall 1611; 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 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.

Said oscillator 12 is provided with to the first side wall 1611 extended boss 204, and when spring part 13 motion amplitudes were excessive, boss 204 can bump against the sidewall 161 of pedestal 16, thereby limits the range of movement of spring part 13, protection spring part 13.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.Balancing weight 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, fit with the first side wall 1611 of pedestal 16 in junction surface 132.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.Spring part 13 is two, and lays respectively at the both sides of said oscillator 12.

With reference to shown in Figure 4, in the utility model linear vibration electric motor 100, the sidewall 161 of said pedestal 16 is provided with the guide vane end stop 14 that protrudes out to spatial accommodation 164 in the lump; Said oscillator 12 is provided with the side 202 that is positioned on the direction of vibration, and side 202 is provided with the stopper slot 203 that holds guide vane end stop 14, and the width of stopper slot 203 is greater than the width of guide vane end stop 14; And do not influence the normal vibration of oscillator 12; But in falling process, during oscillator 12 motion overruns, guide vane end stop 14 will be run in the two ends of stopper slot 203 at product; Limit the displacement of oscillator 12 when falling thus, played the purpose of protection spring part 13.This structure is in complete guard mode at falling process medi-spring spare 13, can be directly not stressed, guaranteed the performance of product after falling, and reach requirement of client.

In above-mentioned utility model linear vibration electric motor 100, said stopper slot 203 is positioned on the balancing weight 121, and guide vane end stop 14 is two, lays respectively at the second relative sidewall 1612, corresponding, said stopper slot 203 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 connection oscillator and pedestal are to make the spring part of oscillator vibration; Said pedestal is provided with sidewall; Said oscillator is provided with the side that is positioned on the direction of vibration, it is characterized in that: said sidewall is provided with the guide vane end stop that protrudes out to said spatial accommodation, and said side is provided with and holds said guide vane end stop and can hold the stopper slot that said guide vane end stop moves along direction of vibration.

2. linear vibration electric motor according to claim 1; It is characterized in that: the sidewall of said pedestal is provided with the first side wall and second sidewall adjacent with the first side wall, and 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 the first side wall along elasticity arm.

3. linear vibration electric motor according to claim 2 is characterized in that: said guide vane end stop is two, and lays respectively at the second relative sidewall; Corresponding, said stopper slot also is two.

4. linear vibration electric motor according to claim 1 is characterized in that: said oscillator comprises balancing weight and a pair of permanent magnet of arranging side by side, and said stopper slot is positioned on the balancing weight.

5. linear vibration electric motor according to claim 2 is characterized in that: said oscillator is provided with to the first side wall extended boss of deriving.

6. linear vibration electric motor according to claim 1 is characterized in that: said spring part is two, and lays respectively at the both sides of said oscillator.