CN205490071U - Linear vibrating motor - Google Patents

Abstract

The utility model provides a linear vibrating motor, including shell, oscillator and fix on the shell and with oscillator parallel arrangement's stator, wherein, the oscillator includes vibrating mass, vibrating mass includes at least one permanent magnet, and the stator includes the magnetic conduction piece, 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, wherein, 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, just, make a concerted effort size and the relative displacement's of magnetic field force big or small one -tenth proportional relationship. Utilize above -mentioned utility model, through the effect of the self -driven between magnetic conduction piece and the permanent magnet, obtain the great sense of shaking easily under its free vibration state, greatly shorten the activation time of system's work simultaneously.

Description

Linear vibration motor

Technical field

This 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 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 upper cover formed oscillation space lower cover, Do the oscillator (including balancing weight and permanent magnet) of linear vibration in oscillation space, connect upper cover and make to shake Son does elastic supporting member for supporting optical member of reciprocating vibration and is positioned at the stator 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 stator coil, due to changing relative to stator coil position during oscillator vibration Become, and the change of the size and Orientation by the electric current of stator coil so that the stress size of oscillator is sent out Changing, thus cause the vibration of oscillator to produce nonlinear change, the vibration sense having influence on electronic product is put down Weighing apparatus.It addition, prior art uses resonance principle, less field drives power is utilized to drive quality Bigger oscillator so that it is reach resonance, thus obtain bigger vibration sense.But under this type of drive, That inevitably causes that system responds is slow.

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, shorten system by self-driven working method simultaneously The time that system starts.

This utility model provides a kind of linear vibration motor, including shell, oscillator and be fixed on shell And the stator be arrangeding in parallel with oscillator, wherein, oscillator includes vibrating mass；Vibrating mass includes at least one Permanent magnet, stator includes magnetic inductive block；Magnetic inductive block is by identical and/or contrary with the direction of vibration of oscillator The effect of magnetic field force；Wherein, when oscillator is in poised state, making a concerted effort of magnetic field force is zero；Work as magnetic conduction When block is acted on the direction of vibration of oscillator with oscillator generation relative displacement by evocatory, magnetic field force Resultant direction is identical with the direction of relative displacement, and, the size size with relative displacement of making a concerted effort of magnetic field force Direct proportionality.

Wherein, preferred scheme is, magnetic inductive block is symmetrically or non-symmetrically distributed in the both sides up and down of vibrating mass； Or, magnetic inductive block is arranged at the side of vibrating mass.

Wherein, preferred scheme is, vibrating mass includes the permanent magnet of three pieces of adjacent settings；Three pieces adjacent The permanent magnet connect is horizontal direction and magnetizes, and, the abutting end polarity of adjacent permanent magnet is identical；Lead Magnetic piece is provided with two pieces, is symmetrically positioned in the upper side and lower side of vibrating mass；Further, two pieces of magnetic inductive block all correspondences are shaken The permanent magnet in the centre position of motion block is symmetrical arranged.

Wherein, preferred scheme is, vibrating mass includes a block permanent magnet；Magnetic inductive block is provided with two pieces, and And it is respectively positioned on upside or the downside of vibrating mass；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.

Wherein, preferred scheme is, vibrating mass includes three blocks of permanent magnets being provided adjacent to, and three pieces adjacent Permanent magnet be horizontal direction and magnetize, and, the abutting end polarity of adjacent permanent magnet is identical；Magnetic conduction Block is six pieces, and magnetic inductive block is symmetrically arranged at the both sides up and down of three blocks of adjacent permanent magnets.

Wherein, preferred scheme is, vibrating mass includes three blocks of permanent magnets being provided adjacent to, and three pieces adjacent Permanent magnet be horizontal direction and magnetize, and, the abutting end polarity of adjacent permanent magnet is identical；Magnetic conduction Block is provided with two pieces；Two pieces of asymmetric both sides up and down being arranged on vibrating mass of magnetic inductive block；Further, asymmetric set Put the centrosymmetry about vibrating mass of the magnetic inductive block in the upper and lower both sides of vibrating mass.

Wherein, preferred scheme is, the cross section of magnetic inductive block takes the shape of the letter U；The two ends of magnetic inductive block correspondence permanent magnet It is provided with the extension for poly-magnetic.

Wherein, preferred scheme is, is formed between magnetic between magnetic inductive block with the permanent magnet of corresponding vibrating mass Gap；Magnetic liquid it is provided with in magnetic gap.

Wherein, preferred scheme is, the extraneous evocatory that magnetic inductive block is subject to is produced by evocatory generating unit； Evocatory generating unit is the push-pull configuration of the left and right sides being symmetricly set on vibrating mass.

Wherein, preferred scheme is, also includes that mass, push-pull configuration include recommending Magnet and setting Recommending Magnet side or the voice coil loudspeaker voice coil of upper and lower both sides；Vibrating mass may be contained within mass with recommending Magnet In the groove in portion.

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 evocatory 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, and, for resonant operational principle of the prior art, by above-mentioned Self-driven working method can be greatly shortened the time required for system start-up.

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 this utility model embodiment；

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

Fig. 3-1 shows the principle schematic one of the linear vibration motor according to this utility model embodiment；

Fig. 3-2 shows the principle schematic two of the linear vibration motor according to this utility model embodiment；

Fig. 4 shows the cross-sectional view of the linear vibration motor according to this utility model embodiment two；

Fig. 5-1 shows the principle schematic one of the linear vibration motor according to this utility model embodiment two；

Fig. 5-2 shows the principle schematic two of the linear vibration motor according to this utility model embodiment two；

Fig. 6 shows the cross-sectional view of the linear vibration motor according to this utility model embodiment three；

Fig. 7-1 shows the principle schematic one of the linear vibration motor according to this utility model embodiment three；

Fig. 7-2 shows the principle schematic two of the linear vibration motor according to this utility model embodiment three；

Fig. 8 shows the cross-sectional view of the linear vibration motor according to this utility model embodiment four；

Fig. 8-1 shows the principle schematic one of the linear vibration motor according to this utility model embodiment four；

Fig. 8-2 shows the principle schematic two of the linear vibration motor according to this utility model embodiment four；

Fig. 9 shows the cross-sectional view of the linear vibration motor according to this utility model embodiment five

Fig. 9-1 shows the principle schematic one of the linear vibration motor according to this utility model embodiment five；

Fig. 9-2 shows the principle schematic two of the linear vibration motor according to this utility model embodiment five.

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, this 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 aspect 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 this 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 Show the cross-section structure of linear vibration motor according to this utility model embodiment.

As Fig. 1 and Fig. 2 jointly shown in, this utility model provide linear vibration motor, including shell, Oscillator 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 in direction at oscillator；Wherein, oscillator is worked as When being in poised state, making a concerted effort of magnetic field force is zero；When magnetic inductive block 3a, 3b are acted on by evocatory Time on the direction of vibration of oscillator with oscillator generation relative displacement, the resultant direction of magnetic field force and relative displacement Direction is identical, and, the size size direct proportionality with relative displacement of making a concerted effort of magnetic field force.

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.

In the embodiment shown in fig. 1, center vibrating mass include three pieces be provided adjacent to, horizontal direction magnetizes Permanent magnet, and the abutting end polarity of the permanent magnet of adjacent setting is identical, and magnetic inductive block is laminated structure, The both sides up and down of the permanent magnet in the centre position of centrally disposed vibrating mass, and relative to center vibrating mass Centrosymmetry.

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 resting 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.

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

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；Concrete, the left end of two blocks of the most corresponding permanent magnets of magnetic inductive block and right-hand member Distribution, 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.

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；Magnetic inductive block is provided with two pieces；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 centrosymmetry of vibrating mass.

Fig. 3-1 and Fig. 3-2 respectively illustrates the static of the linear vibration motor according to this utility model embodiment State and the theory structure of vibrational state.

Shown in as common in Fig. 3-1 and Fig. 3-2, 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 by evocatory (include permanent magnet 7a, 7b, 7c at oscillator and be arranged on the conductive magnetic yoke between the permanent magnet being provided adjacent to 8a, 8b) direction of vibration on when there is relative displacement d to the right with oscillator, the first magnetic inductive block 3a is subject to Magnetic field force F1 less than F2, the displacement of the i.e. first magnetic inductive block 3a is (owing to magnetic inductive block is integrally fixed on shell , displacement herein is the relative displacement between permanent magnet) variation for d time, the first magnetic inductive block 3a institute The magnetic field force dF=F2-F1=Kd > 0 being subject to, wherein, K is the magnetic inductive block proportionality coefficient by magnetic field force, K Relevant with magnetic inductive block, the size of permanent magnet and position therebetween.In like manner, the second magnetic inductive block 3b is subject to The magnetic field force dF=F4-F3=Kd > 0 arrived, in the common effect of the first magnetic inductive block 3a and the second magnetic inductive block 3b Under, drive vibrating mass along the direction vibration parallel with magnetic inductive block place plane.

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.

Embodiment two

Fig. 4 is the cross-section structure of the linear vibration motor according to this utility model embodiment two；Fig. 5-1 and figure 5-2 is respectively resting state and the vibrational state of the linear vibration motor according to this utility model embodiment two Under theory structure.

In the embodiment two shown in Fig. 4 to Fig. 5-2, the asymmetric centrally disposed vibrating mass of magnetic inductive block upper Lower both sides；Further, the magnetic inductive block of the asymmetric upper and lower both sides of centrally disposed vibrating mass is about center vibrating mass Centrosymmetry.

Wherein, center vibrating mass include three pieces of the first permanent magnet 7a being provided adjacent to, second permanent magnet 7b and 3rd permanent magnet 7c, three blocks of adjacent permanent magnets are horizontal direction and magnetize, and, adjacent forever The abutting end polarity of Magnet is identical；Magnetic inductive block is two pieces, and two pieces of magnetic inductive blocks are about the horizontal direction of permanent magnet In asymmetric distribution.Such as, the first magnetic inductive block 3a is arranged on the upside of the first permanent magnet 7a, the second magnetic conduction Block 3b is arranged on the downside of the 3rd permanent magnet 7c；Or, the first magnetic inductive block is arranged on the 3rd permanent magnet Upside, the second magnetic inductive block is arranged on the downside of the first permanent magnet；Wherein, the first magnetic inductive block and the second magnetic conduction Block is centrosymmetric distribution about the center of the second permanent magnet.

Wherein, between the first permanent magnet 7a and the second permanent magnet 7b, it is provided with the first conductive magnetic yoke 8a, It is provided with the second conductive magnetic yoke 8b between second permanent magnet 7b and the 3rd permanent magnet 7c.

It should be noted that in this embodiment, vibrating mass is it can also be provided that a block permanent magnet or two The various ways such as block permanent magnet, in the case of vibrating mass is set to many block permanent magnets, magnetic inductive block can be right Claim or the asymmetric side being arranged on permanent magnet and/or both sides, at the base without departing from this utility model content The various improvement made on plinth are all in protection domain of the present utility model.

Embodiment three

Fig. 6 is the cross-section structure of the linear vibration motor according to this utility model embodiment three；Fig. 7-1 and figure 7-2 is respectively resting state and the vibrational state of the linear vibration motor according to this utility model embodiment three Theory structure.

In the embodiment three shown in Fig. 6 to Fig. 7-1, for increasing the magnetic conduction intensity of magnetic inductive block, improve oscillator Oscillation Amplitude, magnetic inductive block is set to six pieces, is symmetrically arranged at the upper of three blocks of adjacent permanent magnets Lower both sides, i.e. the both sides up and down of each block permanent magnet of center vibrating mass are provided with magnetic inductive block.

Wherein, center vibrating mass include three pieces of the first permanent magnet 7a being provided adjacent to, second permanent magnet 7b and 3rd permanent magnet 7c, three blocks of adjacent permanent magnets are horizontal direction and magnetize, and, adjacent forever The abutting end polarity of Magnet is identical；Magnetic inductive block is six pieces, magnetic inductive block be symmetrically arranged at three pieces adjacent The both sides up and down of permanent magnet, including be positioned at the first upper and lower both sides of permanent magnet 7a first couple of magnetic inductive block 3a, 3b, is positioned at second couple of magnetic inductive block 3a ', 3b ' of the second upper and lower both sides of permanent magnet 7b, and is positioned at the 3rd forever 3rd couple of magnetic inductive block 3a of the upper and lower both sides of Magnet 7c ", 3b ".

This 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.

Embodiment four

Fig. 8 is the cross-section structure of the linear vibration motor according to this utility model embodiment four；Fig. 8-1 and figure 8-2 is respectively resting state and the vibrational state of the linear vibration motor according to this utility model embodiment four Under theory structure.

In embodiment four as shown in Fig. 8 to Fig. 8-2, the permanent magnet of magnetic inductive block and corresponding vibrating mass it Between formed magnetic gap, in magnetic gap, be provided with magnetic liquid 12.Wherein, magnetic is formed between oscillator and magnetic inductive block Gap, is filled with flexible magnetic conductive part in this magnetic gap, and this flexibility magnetic conductive part can be magnetic liquid 12, wherein, Magnetic liquid 12 is a kind of to have magnetic colloidal substance, be primarily referred to as nano level magnetic particle (nickel, cobalt, Iron oxides etc.) surfactant of outer layer covers long-chain is scattered in water, organic solvent, oil etc. uniformly In base fluid, thus form a kind of uniform and stable colloid solution.

Owing to magnetic liquid has certain magnetic, during assembling, can be first by vibrating mass and corresponding with vibrating mass The magnetic inductive block arranged assembles, and then squeezes into magnetic liquid in the magnetic gap between permanent magnet and magnetic inductive block, by Magnetic liquid in self can actively be adsorbed in the surface of permanent magnet, and when oscillator vibration, magnetic liquid acts primarily as Effect to the magnetic conduction intensity strengthened between oscillator and magnetic inductive block.

Embodiment five

Fig. 9 shows the cross-section structure of the linear vibration motor according to this utility model embodiment five；Fig. 9-1 With Fig. 9-2 respectively illustrate linear vibration motor according to this utility model embodiment five resting state and Theory structure under vibrational state.

In the embodiment five shown in Fig. 9 to Fig. 9-2, in order to strengthen the magnetic conduction function of magnetic inductive block, it is also possible to Magnetic inductive block 3a, 3b are designed as polymorphic structure, such as U-shape structure etc., it is possible to make magnetic inductive block obtain and to the greatest extent may be used The magnetic flux that energy is big, thus strengthen the vibration sense of linear vibration motor.

Wherein, the cross section of the magnetic inductive block shown in Fig. 9 takes the shape of the letter U (including inverted U-shaped), corresponding at magnetic inductive block The two ends of permanent magnet are provided with the extension for poly-magnetic.

Oscillator structure in the various embodiments described above is all using three block permanent magnets as example, for one piece or many The structure of block permanent magnet, similar to three block permanent magnets, repeat the most one by one.

It should be noted that in the various embodiments described above, be additionally provided with the evocatory generating unit of magnetic inductive block, Evocatory is produced with disturbance oscillator vibration by evocatory generating unit.Specifically, evocatory generating unit can Think the push-pull configuration of the left and right sides being symmetricly set on vibrating mass.Wherein, push-pull configuration includes recommending magnetic Ferrum 5a, 5a ', 5b, 5b ' and being arranged on recommend Magnet side or upper and lower both sides recommend coil 2a, 2a’、2b、2b’；Oscillator includes mass 9, is provided with at the middle part of mass 9 and dodges stator and recommend The avoiding structure of coil；The groove of receiving center vibrating mass and push-pull configuration it is provided with in mass；In Heart vibrating mass and push-pull configuration can be fixed in a groove in the way of using 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 Ferrum 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 symmetrical push away recommending the side of Magnet or be symmetricly set on it should be noted that recommend coil 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 for oscillator.

Linear vibration motor of the present utility model, also includes flexible circuit board (PFCB, Flexible Printed Circuit Board) 4 and elastic supporting member for supporting optical member 10；Wherein, flexible circuit board 4 is fixing with shell is connected；With And, recommend coil and connected with external circuit by the circuit in flexible circuit board 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-restoring force of elastic supporting member for supporting optical member, thus move in the opposite direction, until its two magnetic fields being subject to The elastic-restoring force making a concerted effort to be less than the elastic supporting member for supporting optical member of the mass other end of power, thus realize the past of oscillator Multiple motion.

Additionally, the linear vibration motor in this utility model, mass can use tungsten steel block or nickel steel Block or the contour density-metal material of nickel tungsten are made, and to strengthen vibration force, make the vibration of electronic product More intensive.

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 this utility model is proposed, also Various improvement can be made on the basis of without departing from this 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 State the stator that oscillator be arranged in parallel, it is characterised in that

Described oscillator includes that vibrating mass, described vibrating mass include that at least one permanent magnet, described stator include Magnetic inductive block；Described magnetic inductive block is by the magnetic field force identical and/or contrary with the direction of vibration of described oscillator Effect；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 evocatory 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.

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

Described magnetic inductive block is symmetrically or non-symmetrically distributed in the both sides up and down of described vibrating mass；Or lead described in, Magnetic piece is arranged at the side of described vibrating mass.

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

Described vibrating mass includes the permanent magnet of three pieces of adjacent settings, and described three blocks of adjacent permanent magnets are equal Magnetize for horizontal direction, and, the abutting end polarity of adjacent permanent magnet is identical；

Described magnetic inductive block is provided with two pieces, is symmetrically positioned in the upper side and lower side of described vibrating mass；Further, two pieces The permanent magnet in the centre position of the most corresponding described vibrating mass of magnetic inductive block is symmetrical arranged.

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

Described vibrating mass includes that a block permanent magnet, described magnetic inductive block are provided with two pieces, and is respectively positioned on described The upside of vibrating mass or downside；

The left end of described two pieces of magnetic inductive blocks corresponding described permanent magnet respectively and right-hand member distribution, and about described The central axis of permanent magnet is symmetrical.

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

Described vibrating mass includes that three blocks of permanent magnets being provided adjacent to, described three blocks of adjacent permanent magnets are Horizontal direction magnetizes, and, the abutting end polarity of adjacent permanent magnet is identical；

Described magnetic inductive block is six pieces, and described magnetic inductive block is symmetrically arranged at described three blocks of adjacent permanent magnetism The both sides up and down of ferrum.

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

Described vibrating mass includes that three blocks of permanent magnets being provided adjacent to, described three blocks of adjacent permanent magnets are Horizontal direction magnetizes, and, the abutting end polarity of adjacent permanent magnet is identical；

Described magnetic inductive block is provided with two pieces, and described two pieces of magnetic inductive blocks are asymmetric is arranged on the upper and lower of described vibrating mass Both sides；Further,

The asymmetric magnetic inductive block center pair about described vibrating mass being arranged on the upper and lower both sides of described vibrating mass Claim.

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

The cross section of described magnetic inductive block takes the shape of the letter U；

The two ends of the corresponding described permanent magnet of described magnetic inductive block are provided with the extension for poly-magnetic.

8. the linear vibration motor as described in any one of claim 1-7, it is characterised in that

Magnetic gap is formed between described magnetic inductive block with the permanent magnet of corresponding described vibrating mass；

Magnetic liquid it is provided with in described magnetic gap.

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

The evocatory that described magnetic inductive block is subject to is produced by evocatory generating unit；

Described evocatory generating unit is the push-pull configuration of the left and right sides being symmetricly set on described vibrating mass.

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

Also include mass；

Described push-pull configuration includes recommending Magnet and recommends Magnet side or upper and lower both sides described in being arranged on Voice coil loudspeaker voice coil；

Described vibrating mass is recommended in the groove that Magnet may be contained within the middle part of described mass with described.