CN205566064U - Linear vibrating motor - Google Patents

Abstract

The utility model provides a linear vibrating motor include shell, oscillator and fix on the shell and with oscillator parallel arrangement's stator, the oscillator includes the quality piece and inlays the vibrating mass who establishes in the quality piece, wherein, the stator is including being fixed in the magnetic conduction piece on the shell, the magnetic conduction piece receives effect the same with the direction of vibration of oscillator and/or the magnetic field force that the person is opposite, when the oscillator is in balanced state, the zero of making a concerted effort to be of magnetic field force, receive being used in of excitation force when taking place relative displacement with the oscillator on the direction of vibration of oscillator when the magnetic conduction piece, the magnetic field force to make a concerted effort the orientation the same with relative displacement's orientation, make a concerted effort size and the relative displacement's of magnetic field force big or small one -tenth proportional relationship, be fixed with balanced magnet on the shell, balanced magnet is located between the lateral wall of vibrating mass and shell, has the effort of inter attraction between balanced magnet and the vibrating mass. Utilize the above -mentioned utility model can the great sense of shaking of more easy acquisition, the effective control oscillator be at the ascending state of stablizing in non -vibration side.

Description

Linear vibration motor

Technical field

The utility model relates to consumer electronics field, more specifically, relating to one and being applied to portable The linear vibration motor of formula consumption electronic product.

Background technology

Along with the development of the communication technology, portable type electronic product, such as mobile phone, handheld device or palm Multimedia entertainment equipments etc. enter the life of people.In these portable type electronic products, typically can be with micro- Type vibrating motor does system feedback, the incoming call prompting of such as mobile phone, the vibrational feedback etc. of game machine.So And, along with the lightening development trend of electronic product, its internal various components and parts also need to adapt to this become Gesture, vibrating motor is no exception.

Existing vibrating motor, generally comprise upper cover and with upper cover formed oscillation space lower cover, In oscillation space, do the oscillator (including balancing weight and permanent magnet) of linear vibration, connect upper cover and make Oscillator does elastic supporting member for supporting optical member of reciprocating vibration and is positioned at the coil of oscillator distance below.

In the vibrating motor of above-mentioned this structure, the strength of drive vibrator vibration all derives from shakes Magnetic field force between son and coil, owing to the magnetic field force between oscillator and coil is limited so that oscillator vibration Vibration sense smaller, and due to change relative to coil position during oscillator vibration so that oscillator Stress size change, straight-line oscillation response speed is uneven, thus causes the vibration of oscillator to produce Nonlinear change, and when micro motor suffers external impacts, the oscillator of micro motor easily occurs Polarization, has influence on the vibration sense balance of electronic product.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a kind of linear vibration motor, with magnetic inductive block Substitute stator coil, by the self-driven effect between magnetic inductive block and permanent magnet, make product in free vibration During can be relatively easy to obtain bigger vibration sense, and oscillator can be reduced polarization phenomena occurs.

A kind of linear vibration motor is provided, including shell, oscillator and outside being fixed on according to the utility model The stator be arrangeding in parallel on shell and with oscillator, oscillator includes mass and the vibration being embedded in mass Block；Wherein, stator includes the magnetic inductive block being fixed on shell；Magnetic inductive block is by the direction of vibration with oscillator The effect of identical and/or contrary magnetic field force；Wherein, when oscillator is in poised state, magnetic field force Make a concerted effort to be zero；When magnetic inductive block is acted on the direction of vibration of oscillator relative with oscillator generation by excitation force During displacement, the resultant direction of magnetic field force is identical with the direction of relative displacement, and, the size of making a concerted effort of magnetic field force Size direct proportionality with relative displacement；Being fixed with balanceable magnet on shell, balanceable magnet is positioned at Between vibrating mass and the sidewall of shell, have between balanceable magnet and the permanent magnet of vibrating mass and to attract each other Active force.

Wherein, preferred scheme is, shell includes being mutually adapted fixing upper casing and lower casing；Upper casing includes Horizontally disposed roof and from vertically extending four sidewalls of roof, lower casing includes flat diapire； Wherein, balanceable magnet is fixed on the diapire of lower casing；Or balanceable magnet is fixed on the sidewall of upper casing.

Wherein, preferred scheme is, balanceable magnet is provided with two, and two balanceable magnets are parallel to each other.

Wherein, preferred scheme is, the force direction between balanceable magnet and vibrating mass shakes with oscillator Dynamic direction is perpendicular.

Wherein, preferred scheme is, vibrating mass includes three blocks of first permanent magnets being provided adjacent to, second forever Magnet and the 3rd permanent magnet, magnetic inductive block is symmetrically positioned in the both sides up and down of the second permanent magnet.

Wherein, preferred scheme is, three block permanent magnets are horizontal direction and magnetize, and, adjacent forever The polarity of the abutting end of magnet is identical；Balanceable magnet also magnetizes for horizontal direction, and right with permanent magnet The magnetic pole that should hold is identical.

Wherein, preferred scheme is, also includes being symmetrical set the push-pull configuration at vibrating mass two ends； Wherein, push-pull configuration includes the magnet of recommending being embedded in mass, and be positioned at recommend magnet side or Upper and lower both sides recommend coil；Vibrating mass and recommend magnet and be respectively positioned in the groove in the middle part of mass.

Wherein, preferred scheme is, is provided with and recommends coil, magnetic inductive block peace at the middle part of mass The avoiding structure that weighing apparatus magnet is corresponding；Vibrating mass and recommend magnet and be all fixed in groove in the way of gluing.

Wherein, preferred scheme is, also includes FPC；FPC is fixing with shell to be connected； And, recommend coil and connected with external circuit by the circuit on FPC.

Wherein, preferred scheme is, the two ends of mass are connected with shell elasticity by elastic supporting member for supporting optical member, Mass is hung in shell by elastic supporting member for supporting optical member.

Utilize above-mentioned according to linear vibration motor of the present utility model, jumped out existing only by oscillator and The magnetic field force of coil provides the motor mentality of designing driven, and substitutes stator coil with magnetic inductive block, assists to swash Having an effect generating unit, oscillator starts the variation being subjected to displacement when by this excitation force effect, but follow-up Vibration processes in, self-driven mesh can be reached by the interaction between magnetic inductive block and permanent magnet completely , at which when free vibration state, as long as this part self drive is sufficiently large, will be easily Obtain bigger vibration sense；Further, for resonant operational principle of the prior art, by above-mentioned Self-driven working method can be greatly shortened the time required for system starts.

The utility model is by stable equilibrium magnet on shell, and balanceable magnet is positioned at vibrating mass and shell Between sidewall, there is between balanceable magnet and the permanent magnet of vibrating mass the active force attracted each other.By dividing The balanceable magnet not being located at permanent magnet both sides is perpendicular to the attraction of oscillator to permanent magnet generation, and minimizing is shaken There is polarization phenomena in son.

Accompanying drawing explanation

By with reference to below in conjunction with the explanation of accompanying drawing and the content of claims, and along with to this practicality Novel is more fully understood from, and other purpose of the present utility model and result will be more apparent and should be readily appreciated that. In the accompanying drawings:

Fig. 1 shows the decomposition texture schematic diagram of the linear vibration motor according to the utility model embodiment；

Fig. 2 shows the profile one of the linear vibration motor according to the utility model embodiment；

Fig. 3 shows the profile two of the linear vibration motor according to the utility model embodiment；

Fig. 4-1 shows the principle schematic one of the linear vibration motor according to the utility model embodiment；

Fig. 4-2 shows the principle schematic two of the linear vibration motor according to the utility model embodiment；

Fig. 4-3 shows the principle schematic three of the linear vibration motor according to the utility model embodiment.

The most identical label indicates similar or corresponding feature or function.

Detailed description of the invention

In the following description, for purposes of illustration, complete in order to provide one or more embodiments Foliation solution, elaborates many details.It may be evident, however, that these details can also there is no In the case of realize these embodiments.In other example, for the ease of describing one or more embodiments, Known structure and equipment illustrate in block form an.

" mass " used in the description of following detailed description of the invention may also be referred to as " balancing weight ", The vibrating mass referring both to and producing vibration is fixing to strengthen the high-quality of vibration balancing, high desnity metal block.

It addition, the utility model is mainly used in the improvement of vibrating motor, but also it is not excluded for this reality It is applied to large-scale vibrating motor by the technology in novel.But for the convenience stated, in following enforcement During example describes, the implication that " linear vibration motor " represents with " vibrating motor " is identical.

For describing the structure of linear vibration motor of the present utility model in detail, below with reference to accompanying drawing to this reality It is described in detail with novel specific embodiment.

In order to solve in existing vibrating motor structure owing to the magnet of oscillator and stator coil provide The vibration sense imbalance problem that driving force is unbalanced and causes, the linear vibration motor that the utility model provides, Substitute stator coil with magnetic inductive block, overcome stator coil due to the energising change in direction and size of current not The stable discontinuity equalization problem caused, effectively strengthens the vibration sense balance of vibrating motor.

Fig. 1 shows the decomposition texture of the linear vibration motor according to embodiment of the present utility model；Fig. 2 The section of linear vibration motor according to the utility model embodiment is shown the most from different perspectives with Fig. 3 Structure.

As shown in Figure 1 to Figure 3, the linear vibration motor of the utility model embodiment, including shell, shakes Son and the stator being fixed on shell and be arrangeding in parallel with oscillator, wherein, oscillator includes mass 9 Be arranged on the center vibrating mass (or vibrating mass, lower with) in mass 9 centre position, center vibrating mass bag Include at least one block permanent magnet；Stator includes magnetic inductive block 3a, the 3b being fixed on shell, magnetic inductive block 3a, 3b Direction of vibration acting on by the identical and/or contrary magnetic field force of both direction at oscillator；Wherein, when When oscillator is in poised state, making a concerted effort of two magnetic field forces is zero；When magnetic inductive block 3a, 3b are by excitation force When acting on the direction of vibration of oscillator with oscillator generation relative displacement, the resultant direction of two magnetic field forces Identical with the direction of relative displacement, and, the size of making a concerted effort of two magnetic field forces becomes with the size of relative displacement Proportional relationship.Wherein, shell is further fixed on balanceable magnet 13a, 13b, balanceable magnet 13a, 13b Between vibrating mass and the sidewall of shell, exist between balanceable magnet and the permanent magnet of vibrating mass and mutually inhale The active force drawn.

Wherein, shell includes the upper casing 1 of rectangular structure and is connected fixing tabular with upper casing 1 adaptation The lower casing 11 of structure, upper casing 1 includes horizontally disposed roof and from vertically extending four sidewalls of roof, Lower casing includes flat diapire；Wherein, balanceable magnet is provided with two, the parallel lower casing 11 that is fixed on On diapire；Or on the parallel sidewall being fixed on upper casing 1.Two pieces of balanceable magnets divide about permanent magnet symmetry Force direction between cloth, and itself and permanent magnet is perpendicular with the direction of vibration of oscillator.

In specific embodiment shown in the drawings, center vibrating mass include three pieces be provided adjacent to, horizontal direction The permanent magnet magnetized, and the abutting end polarity of the permanent magnet of adjacent setting is identical, and magnetic inductive block is sheet Structure, the both sides up and down of the permanent magnet in the centre position of centrally disposed vibrating mass, and relative to center The Central Symmetry of vibrating mass.

In other words, center vibrating mass includes the first permanent magnet 7a, the second permanent magnet 7b and being arranged in order Three permanent magnet 7c, are provided with the first conductive magnetic yoke 8a between the first permanent magnet 7a and the second permanent magnet 7b, It is provided with the second conductive magnetic yoke 8b, at the second permanent magnet between the second permanent magnet 7b and the 3rd permanent magnet 7c The upside of 7b is provided with the first magnetic inductive block 3a, and the downside of the second permanent magnet 7b is provided with the second magnetic inductive block 3b, the first magnetic inductive block 3a and the second magnetic inductive block 3b are each attached on shell, and with the second permanent magnet 7b it Between there is certain gap.Wherein, the first magnetic inductive block 3a and the second magnetic inductive block 3b is about the second permanent magnet 7b is symmetric, and when oscillator is in balance inactive state, the first magnetic inductive block 3a and the second magnetic conduction Distance between block 3b and the first permanent magnet 7a and the end of the 3rd permanent magnet 7c is identical.

Wherein, two pieces of balanceable magnets 13a, 13b also magnetize for horizontal direction, and corresponding with permanent magnet The magnetic pole of end is identical, and such as, balanceable magnet 13a is that level magnetizes to S-N, and corresponding with its S end the One end of one permanent magnet 7a is also S pole, and the 3rd one end the most corresponding with balanceable magnet N for permanent magnet 7c is also For N pole.When oscillator produces the skew on vertical and paper direction or deflection, balanceable magnet 13a, Attraction between 13b and permanent magnet, it is possible to along with the cheap of permanent magnet or deflection produce corresponding recovery Power, it is ensured that the linear oscillator of permanent magnet, to ensure the oscillating mass of linear vibration motor.

It should be noted that magnetic inductive block can also the both sides up and down of symmetrical or mal-distribution and vibrating mass, Magnetic inductive block is arranged on the side of vibrating mass by the latter.Such as, vibrating mass includes three blocks of adjacent permanent magnets； Three blocks of adjacent permanent magnets are horizontal direction and magnetize, and, the abutting end polarity of adjacent permanent magnet Identical；And magnetic inductive block is provided with two pieces, two pieces of magnetic inductive blocks are symmetricly set on the upper side and lower side of vibrating mass, and And, the permanent magnet in the centre position of two pieces of all corresponding vibrating mass of magnetic inductive block is arranged.

Or vibrating mass includes a block permanent magnet, magnetic inductive block is provided with two pieces, and two pieces of equal positions of magnetic inductive block Upside or downside in vibrating mass；Or, left end and the right-hand member of two blocks of magnetic inductive block corresponding permanent magnets respectively divide Cloth, and the central axis about permanent magnet is symmetrical.

Or, vibrating mass includes that three blocks of permanent magnets being provided adjacent to, three blocks of adjacent permanent magnets are water Square to magnetizing, and, the abutting end polarity of adjacent permanent magnet is identical, and magnetic inductive block is six pieces, six pieces Magnetic inductive block is symmetrically arranged at the both sides up and down of three blocks of adjacent permanent magnets.

Wherein, vibrating mass includes that three blocks of permanent magnets being provided adjacent to, three blocks of adjacent permanent magnets are water Square to magnetizing, and, the abutting end polarity of adjacent permanent magnet is identical；Magnetic inductive block is provided with two pieces, and two The asymmetric both sides up and down being arranged on vibrating mass of block magnetic inductive block；It is further, asymmetric that to be arranged on vibrating mass upper and lower The magnetic inductive block of both sides is about the Central Symmetry of vibrating mass.

Fig. 4-1, Fig. 4-2 and Fig. 4-3 show the most from different perspectives according to the utility model embodiment The inactive state of linear vibration motor and the theory structure of vibrational state.

Shown in as common in Fig. 4-1 to Fig. 4-3, when oscillator is in poised state, the first magnetic inductive block 3a is subject to Magnetic field force F1, F2 that two sizes arriving are identical, in opposite direction；When the first magnetic inductive block 3a is at oscillator (bag Include permanent magnet 7a, 7b, 7c and be arranged on conductive magnetic yoke 8a between the permanent magnet being provided adjacent to, 8b) When there is relative displacement d to the right on direction of vibration with oscillator, the magnetic field force F1 that the first magnetic inductive block 3a is subject to Displacement less than F2, the i.e. first magnetic inductive block 3a (owing to magnetic inductive block is integrally fixed on shell, position herein Move for permanent magnet between relative displacement) variation for d time, the magnetic field force suffered by the first magnetic inductive block 3a DF=F2-F1=Kd > 0, wherein, K is the magnetic inductive block proportionality coefficient by magnetic field force, K and magnetic inductive block, forever The size of magnet and position therebetween are relevant.In like manner, the magnetic field force that the second magnetic inductive block 3b is subject to Under the common effect of dF=F4-F3=Kd > 0, the first magnetic inductive block 3a and the second magnetic inductive block 3b, drive vibrating mass Along the direction vibration parallel with magnetic inductive block.

Understand, magnetic inductive block on the direction of vibration of oscillator with oscillator generation relative displacement time, two magnetic fields The resultant direction of power is identical with the direction of magnetic inductive block relative displacement, and, the size of making a concerted effort of two magnetic field forces With the size direct proportionality of relative displacement, thus realize the inverse stiffness variation of magnetic inductive block, it is ensured that oscillator Can produce resonance, vibration sense effect is more significantly.

Additionally, permanent magnet is also acted on by two pieces of balanceable magnets 13a, 13b, due to balanceable magnet about Permanent magnet is symmetric, and two pieces of balanceable magnets also magnetize for horizontal direction, and corresponding with permanent magnet End magnetic pole identical, permanent magnet in vibration processes, directed force F 5=F6 of the balanceable magnet being subject to, and The direction of magnetic field force F5 with F6 is vertical with the direction of vibration of oscillator, can suppress permanent magnetism by F5 and F6 The skew of iron or deflection.

The utility model is during concrete application, it is also possible to increases according to actual product needed/reduces Permanent magnet in the vibrating mass of center, such as, utilizes more than the permanent magnet group in the manner described above of more than three pieces One-tenth center vibrating mass, and centered by the both sides up and down of each block permanent magnet of vibrating mass be respectively provided with one piece of magnetic conduction Block, to strengthen the active force between magnetic inductive block and oscillator, strengthens the vibration sense of linear vibration motor.

In another detailed description of the invention of the present utility model, in order to strengthen the magnetic conduction function of magnetic inductive block, also Magnetic inductive block 3a, 3b can be designed as polymorphic structure, such as U-shape structure or I-shape construction etc., energy Enough make magnetic inductive block obtain the biggest magnetic flux, thus strengthen the vibration sense of linear vibration motor.Wherein, The two ends of magnetic inductive block correspondence permanent magnet can be provided with the extension for poly-magnetic；Or, at I shape The two ends of the magnetic inductive block 3 of structure are also equipped with the extension for poly-magnetic.

It should be noted that in the various embodiments described above, be additionally provided with and excite the excitation force of magnetic inductive block to generate Parts, are produced excitation force with disturbance oscillator vibration by excitation force generating unit.

Specifically, as depicted in figs. 1 and 2, excitation force generating unit can be the left and right two at vibrating mass The symmetrically arranged push-pull configuration in side.Wherein, push-pull configuration includes recommending magnet 5a, 5a ', 5b, 5b ' and Be arranged on recommend magnet side or upper and lower both sides recommend coil 2a, 2a ', 2b, 2b '；Oscillator includes matter Gauge block 9, is provided with the avoiding structure dodged stator He recommend coil at the middle part of mass 9；At mass In be provided with the groove of receiving center vibrating mass and push-pull configuration；Center vibrating mass and push-pull configuration can be adopted Fixing in a groove by the mode of gluing.

Specifically, the medium position at mass is provided with the groove suitable with oscillator structure, and oscillator is solid It is scheduled in groove.It is provided with two at the two ends of groove and (four) are recommended magnet-fixation grooves, recommend magnet Be housed in and recommend in magnet-fixation grooves, wherein, each recommend magnet-fixation grooves in be provided with up-down structure Recommend magnet and at two conductive magnetic yoke 6a recommending between magnet, 6b, recommend magnet each for two What the upper and lower both sides of fixing groove were respectively arranged with correspondence recommends coil.Wherein, recommend coil and recommend magnetic Iron be arranged in parallel, by being passed through AC signal in recommending coil, excites magnetic inductive block stress, thus drives Vibrating mass vibrates, it is achieved the vibration of linear vibration motor；When oscillator starts to move back and forth along direction of vibration, In follow-up vibration processes, it is not necessary to recommending magnet and recommend coil and persistently provide driving force, oscillator only depends on Can vibrate by interaction force between magnet in magnetic inductive block and vibrating mass.

Can be arranged on and recommend the side of magnet or be symmetricly set on it should be noted that recommend coil and push away Drawing the upper and lower both sides of magnet, the structure recommending magnet is not limited to two shown in accompanying drawing couple structure, it is possible to With according to product need set flexibly that push-pull configuration recommends magnet and recommend number of coils, position, The such as both sides at the groove of fixing vibrating mass are respectively provided with one group and recommend magnet and relative with recommending magnet That answers recommends coil, is arranged on recommends the side of magnet by recommending coil, or it is asymmetric to recommend coil It is arranged on the upper and lower both sides etc. recommending magnet, it is possible to provide perturbed force to oscillator.

Linear vibration motor of the present utility model, also includes FPC (PFCB, Flexible Printed Circuit Board) 4 and elastic supporting member for supporting optical member 10；Wherein, FPC 4 is fixing with shell is connected；With And, recommend coil and connected with external circuit by the circuit on FPC 4.Elastic supporting member for supporting optical member 10 points Not being arranged on the two ends, left and right of mass 9, push-pull configuration is arranged between elastic supporting member for supporting optical member 10 and vibrating mass, By being fixed on spacing for elastic supporting member for supporting optical member 10 between oscillator and shell, the vibration for oscillator provides elastic extensive Multiple power.

Wherein, magnetic inductive block on the direction of vibration of oscillator with oscillator generation relative displacement time, oscillator is to line Property vibrating motor an end motion, until the making a concerted effort less than mass one end of its two magnetic field forces being subject to The elastic force of elastic supporting member for supporting optical member, thus move in the opposite direction, until the closing of its two magnetic field forces being subject to Power is less than the elastic force of the elastic supporting member for supporting optical member of the mass other end, thus realizes the reciprocating motion of oscillator.

Describe in an illustrative manner according to linear vibration motor of the present utility model above with reference to accompanying drawing.But, It will be appreciated by those skilled in the art that the linear vibration motor that above-mentioned the utility model is proposed, also Various improvement can be made on the basis of without departing from the utility model content.Therefore, of the present utility model Protection domain should be determined by the content of appending claims.

Claims (10)

1. a linear vibration motor, including shell, oscillator and fixing on the housing and with institute Stating the stator that oscillator be arranged in parallel, described oscillator includes mass and is embedded the vibration in described mass Block；It is characterized in that,

Described stator includes the magnetic inductive block being fixed on described shell；

Described magnetic inductive block is made by the magnetic field force identical and/or contrary with the direction of vibration of described oscillator With；Wherein, when described oscillator is in poised state, making a concerted effort of described magnetic field force is zero；

When sending out with described oscillator on the direction of vibration that described magnetic inductive block is acted on described oscillator by excitation force During raw relative displacement, the resultant direction of described magnetic field force is identical with the direction of relative displacement, and, described magnetic The size size direct proportionality with described relative displacement of making a concerted effort of field force；

Be fixed with balanceable magnet on the housing, described balanceable magnet be positioned at described vibrating mass with described outside Between the sidewall of shell, there is between described balanceable magnet and described vibrating mass the active force attracted each other.

2. linear vibration motor as claimed in claim 1, it is characterised in that

Described shell includes being mutually adapted fixing upper casing and lower casing；

Described upper casing includes horizontally disposed roof and from vertically extending four sidewalls of described roof, institute State lower casing and include flat diapire；Wherein,

Described balanceable magnet is fixed on the diapire of described lower casing；Or described balanceable magnet is fixed on described On the sidewall of upper casing.

3. linear vibration motor as claimed in claim 2, it is characterised in that

Described balanceable magnet is provided with two, and two balanceable magnets are parallel to each other.

4. linear vibration motor as claimed in claim 1, it is characterised in that

Force direction between described balanceable magnet with described vibrating mass and the direction of vibration phase of described oscillator Vertically.

5. linear vibration motor as claimed in claim 1, it is characterised in that

Described vibrating mass includes three blocks of first permanent magnets being provided adjacent to, the second permanent magnet and the 3rd permanent magnet, Described magnetic inductive block is symmetrically positioned in the both sides up and down of described second permanent magnet.

6. linear vibration motor as claimed in claim 5, it is characterised in that

Described three block permanent magnets are horizontal direction and magnetize, and, the pole of the abutting end of adjacent permanent magnet Property is identical；

Described balanceable magnet also magnetizes for horizontal direction, and the magnetic pole phase of the corresponding end with described permanent magnet With.

7. linear vibration motor as claimed in claim 1, it is characterised in that

Also include being symmetrical set the push-pull configuration at described vibrating mass two ends；Wherein,

Described push-pull configuration includes the magnet of recommending being embedded in described mass, and recommends described in being positioned at Magnet side or upper and lower both sides recommend coil；

Described vibrating mass and described magnet of recommending are respectively positioned in the groove in the middle part of mass.

8. linear vibration motor as claimed in claim 7, it is characterised in that

It is provided with at the middle part of described mass and recommends coil, described magnetic inductive block and described balance magnetic with described The avoiding structure that iron is corresponding；

Described vibrating mass and described magnet of recommending all are fixed in described groove in the way of gluing.

9. linear vibration motor as claimed in claim 7, it is characterised in that

Also include FPC；

Described FPC is fixing with described shell to be connected；And,

Described coil of recommending is connected with external circuit by the circuit on described FPC.

10. linear vibration motor as claimed in claim 1, it is characterised in that

The two ends of described mass are connected with shell elasticity by elastic supporting member for supporting optical member, and described elastic supporting member for supporting optical member will Described mass is hung in described shell.