CN106712436A

CN106712436A - Linear vibrating motor

Info

Publication number: CN106712436A
Application number: CN201611081775.1A
Authority: CN
Inventors: 祖峰磊; 秦小森
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2017-05-24

Abstract

The invention discloses a linear vibrating motor comprising a shell (1) and a driving device and a mass block (6) which are accommodated in the shell (1). The driving device comprises a magnet component (4) and an electromagnet which acts with the magnet component (4). The magnet component (4) is fixed relative to the mass block (6). The electromagnet is fixed relative to the shell (1). The electromagnet comprises a coil (2) and an iron core (3). The plane of the coil (2) is parallel to the vibrating direction.

Description

A kind of linear vibration motor

Technical field

The present invention relates to motor technologies field, more particularly it relates to a kind of linear vibration motor.

Background technology

With the development of the communication technology, portable electric appts, such as mobile phone, panel computer, multimedia entertainment equipment etc. Have become the necessity for life of people.In these electronic equipments, system is done usually using miniature linear vibration motor Feedback, the vibrational feedback of such as incoming call prompt of mobile phone etc..

Linear vibration motor generally includes oscillator part and stator part, and oscillator part further includes mass, magnet With shell fragment etc., stator part further includes FPCB, coil etc., wherein, coil and FPCB are fixedly connected on linear vibration motor Shell on, mass and magnet are fixed together, and shell fragment is connected between mass and shell, coil then be located at permanent magnetism In the magnetic field range of body.So, after coil electricity, coil is subject to Ampere force effect, because coil is fixedly connected outside On shell, therefore, oscillator part will carry out reciprocal regular vibration under the driving of the reaction force of Ampere force, and due to quality The quality of block is larger, and then can obtain the effect that whole linear vibration motor vibrates.

As can be seen here, the reaction force of above-mentioned Ampere force is unique power of drive vibrator partial vibration, but is limited to line The spatial volume of circle, coil turn and effective length are limited, and the Ampere force is generally smaller, and this is to cause existing motor to exist to ring Major reason more long between seasonable, therefore, it is highly desirable to provide a kind of driving force that can increase and be supplied to oscillator part Motor configuration.

The content of the invention

One purpose of the embodiment of the present invention is to provide a kind of new technical scheme of linear vibration motor, with to transducer part Divide and larger driving force is provided.

According to the first aspect of the invention, there is provided a kind of linear vibration motor, it includes shell and is housed in described Drive device and mass in shell, the drive device include magnet assemblies and with the magnet assemblies phase separation electromagnetism Iron, the relatively described mass of the magnet assemblies is fixed；The relatively described shell of the electromagnet is fixed, and the electromagnet includes line Circle and iron core, parallel to direction of vibration, the iron core is included in the centre bore of the coil plane where the coil Part.

Optionally, the magnet assemblies are included in the two blocks of side magnet arranged on the direction of vibration, one of side First edge of the magnet correspondence coil, another piece of the second edge of the side magnet correspondence coil, two blocks of side magnet Magnetizing direction conversely, and the plane where being each perpendicular to the coil.

Optionally, the magnet assemblies include one block of magnet, and the magnetizing direction of the magnet is parallel to the vibration side To, and a pole pair of the magnet answers the first edge of the coil, another pole pair to answer the second side of the coil Portion.

Optionally, the magnet assemblies also include two pieces of side washers, and one piece of side washer is arranged on of the magnet On end face where magnetic pole, another piece of side washer be arranged on another magnetic pole of the magnet where end face on.

Optionally, the iron core also includes the part positioned at the dorsad described magnet assemblies side of the coil.

Optionally, the iron core has storage tank, and the coil is embedded in the storage tank, and the coil towards Exposed via the storage tank on the surface of the magnet assemblies.

Optionally, the coil has the first edge and the second edge with the magnet assemblies phase separation, and described First edge is each perpendicular to the direction of vibration with second edge.

Optionally, the shell has magnetic-conductance portion, and the magnetic-conductance portion is located at the same of the magnet assemblies with the coil Side.

Optionally, the iron core is contacted with the magnetic-conductance portion.

Optionally, the linear vibration motor includes drive device described in two or more, and is driven described in two or more Device is arranged in order on the direction of vibration.

The beneficial effects of the present invention are linear vibration motor of the present invention sets cored, and the iron core is constituted with coil Electromagnet, the electromagnet to magnet assemblies, and then can give plus magnetic force when coil obtains electric to transducer part, and the magnetic force and line The direction that the reaction force of the Ampere force of magnetic circuit component is applied to when enclosing electric is consistent, so, drives vibration component to vibrate repeatedly Driving force will be equal to the reaction force and the magnetic force of Ampere force and, and then increase effectively the driving to the offer of oscillator part Power.

By referring to the drawings to the detailed description of exemplary embodiment of the invention, further feature of the invention and its Advantage will be made apparent from.

Brief description of the drawings

The accompanying drawing for being combined in the description and constituting a part for specification shows embodiments of the invention, and even It is used to explain principle of the invention together with its explanation.

Fig. 1 is a kind of structural representation of the embodiment according to linear vibration motor of the present invention；

Fig. 2 is the force analysis of the oscillator part of Fig. 1 linear vibration motors；

Fig. 3 is the structural representation of second embodiment according to linear vibration motor of the present invention；

Fig. 4 is the force analysis of the oscillator part of Fig. 3 linear vibration motors；

Fig. 5 is the structural representation of the third embodiment according to linear vibration motor of the present invention；

Fig. 6 is the force analysis of the oscillator part of Fig. 5 linear vibration motors；

Fig. 7 is the 4th kind of structural representation of embodiment according to linear vibration motor of the present invention；

Fig. 8 is the structural representation of another embodiment of electromagnet in Fig. 1 to Fig. 7；

Fig. 9 is the structural representation of another embodiment of electromagnet in Fig. 1 to Fig. 7；

Figure 10 is the decomposition texture schematic diagram based on a kind of embodiment of the linear vibration motor of drive device in Fig. 5.

Description of reference numerals：

1- shells；11- upper casings；

12- lower casings；2- coils；

3- iron cores；31- is located at the part in the centre bore of coil；

The side of sidewall portion of 33- iron cores；32- is located at the part of the dorsad magnet assemblies side of coil；

4- magnet assemblies；41a, 41b- side magnet；

42- center magnets；121- magnetic-conductance portions；

6- masses；7-V type shell fragments；

8-FPCB；9- limited blocks；

10- blocks；The reaction force of F1- Ampere forces；

The edge of 21- first；The edge of 22- second；

34- storage tanks；43- magnet；

44a, 44b- side washer；

The magnetic force that F21- electromagnet side magnet to the left applies；

The magnetic force that F22- electromagnet side magnet to the right applies.

Specific embodiment

Describe various exemplary embodiments of the invention in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value for otherwise illustrating in these embodiments do not limit this The scope of invention.

The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention And its any limitation applied or use.

May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable In the case of, the technology, method and apparatus should be considered as a part for specification.

In all examples shown here and discussion, any occurrence should be construed as merely exemplary, without It is as limitation.Therefore, other examples of exemplary embodiment can have different values.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.

Fig. 1 is a kind of simplified structural representation of the embodiment according to linear vibration motor of the present invention, is mainly shown in figure The drive device part of linear vibration motor.Fig. 2 is the force analysis of the oscillator part of Fig. 1 linear vibration motors.

According to Fig. 1, the linear vibration motor is including shell 1 and the mass 6 being housed in shell 1 and drives Device etc., the drive device includes magnet assemblies 4 and the electromagnet positioned at the side of magnet assemblies 4, with by electromagnet and magnetic Interaction between iron component 4 produces the driving force vibrated repeatedly for drive vibrator part, and the electromagnet includes the He of coil 2 Iron core 3.

For the ease of carrying out the assembling of linear vibration motor, the shell 1 can include upper casing 11 and lower casing 12, and the two can be with Fasten and link together.

Electromagnet opposite shell 1 is fixed, and to produce magnetic when coil 2 obtains electric, and then produces magnetic force to make magnet assemblies 4 With.

Plane where coil 2 parallel to direction of vibration, therefore, the centerline direction of coil 2 will be perpendicular to direction of vibration, In the embodiment shown in fig. 1, direction of vibration is left and right directions, and the centerline direction of coil 2 is above-below direction.Therefore, online Circle 2 in the sense of current as depicted in figs. 1 and 2 when, it can be seen from right-hand screw rule, the pole orientation of electromagnet is from upper finger Downwards, i.e., S is extremely above, and N poles are located at lower section.

In the embodiment shown in fig. 1, lower casing 12 can have magnetic-conductance portion 121, and magnetic-conductance portion 121 is located at magnet with coil 2 The same side of component 4, is restrained with by magnetic-conductance portion 121 to the magnetic line of force so that the magnetic field intensity of the side of coil 2 is added By force.

In the embodiment shown in fig. 1, can be with further such that iron core 3 be contacted with magnetic-conductance portion 121, to reduce magnetic resistance.

In the embodiment shown in fig. 1, lower casing 12 may further include the lower casing body of non-magnet material and conduct is led The shielding piece in magnetic portion 121, the shielding piece is arranged on the outer wall of lower casing body, and coil 2 is fixedly connected on lower casing body, iron core 3 are fixedly connected on the shielding piece as magnetic-conductance portion 121 by the opening of lower casing body, are contacted with magnetic-conductance portion 121.

In a further embodiment, the lower casing 12 integrally can also be made up of permeability magnetic material, and so, lower casing 12 itself just may be used Used as magnetic-conductance portion 121.

Coil 2 has the first edge 21 and the second edge 22, and two edge 21,22 can be each perpendicular to direction of vibration, with Increase the effective length of coil 2 and the phase separation of magnet assemblies 4, be perpendicular to the direction of paper in the embodiment shown in fig. 1.

The edge 22 of first edge 21 and second can be straight flange, or arc-shaped edges, for arc-shaped edges, should be perpendicular to Direction of vibration is construed as the arc-shaped edges with the tangent line perpendicular to direction of vibration.

Magnet assemblies 4 can be configured so that can be produced in opposite directions through the first edge 21 of coil 2 and the second side The magnetic line of force in portion 22, and the direction for passing through is perpendicular to the plane where coil 2 or with perpendicular to the plane where coil 2 Direction on component, and then enable first edge 21 and the second edge 22 of coil 2 when being powered respectively to group of magnets Part 4 applies the reaction force along Ampere force direction of vibration and in the same direction, and also enables to electromagnet to magnet assemblies 4 Apply the magnetic force of equidirectional, the driving force for adding can be given to transducer part to increase drive device.

The magnet assemblies 4 can for example be included in two sides magnet 41a, the 41b arranged on direction of vibration, two blocks of side magnet The magnetizing direction of 41a, 41b conversely, and the plane where being each perpendicular to coil 2, in the embodiment shown in fig. 1, namely vertically In lower casing 12.

In the embodiment shown in Fig. 1 and Fig. 2, the magnet assemblies 4 include two pieces of sides magnet 41a, 41b, side magnet 41a's For from bottom to up, i.e., the lower end of side magnet 41a is that S poles, upper end are N poles to magnetizing direction；And the magnetizing direction of side magnet 41b be from Under up to, i.e., the lower end of side magnet 41b be N poles, upper end be S poles.

In a further embodiment, or side magnet 41a magnetizing direction for from top to bottom, and side magnet 41b Magnetizing direction is for from bottom to up.

Side magnet 41a the first edge 21 of correspondence, side magnet 41b the second edge 22 of correspondence, so, with magnetizing shown in Fig. 2 As a example by direction, can enable that the magnetic line of force that side magnet 41b sends is passed through with the direction with vertical component at least in part Second edge 22, and enable to return to the magnetic line of force of side magnet 41a and passed through with the direction with vertical component at least in part First edge 21, and then produce along the driving force of direction of vibration.

Further, the first edge 21 can also be made to be alignd with side magnet 41a, and causes the second edge 22 and side magnet 41b aligns, wherein, alignment is set to be the first edge 21 and side magnet 41a is located on direction of vibration flat where coil 2 In the coverage of the projection on face, the second edge 22 is located at side magnet 41b in the plane where coil 2 on direction of vibration Projection coverage in.So, equally by taking the magnetizing direction shown in Fig. 2 as an example, the magnetic that side magnet 41b can be caused to send The line of force most of can pass through the second edge 22 with generally vertical direction, and enable to return to the magnetic line of force of side magnet 41a It is most of that first edge 21 is passed through with generally vertical direction, and then realize effective utilization of drive device.

According to Fig. 2, the sense of current in coil 2 is so that the electric current of the first edge 21 from outer sensing and makes When obtaining the electric current of the second edge 22 from outside interior sensing, electromagnet will apply magnetic force (repulsion) F21 to side magnet 41a, and to side magnetic Iron 41b applies magnetic force F22 (gravitation), and the two direction is identical, and according to left hand rule, coil 2 is applied to the ampere of magnet assemblies 4 The direction of the reaction force F1 of power is consistent with the direction of magnetic force F21, F22.

When the electric current in coil 2 is with respect to shown in Fig. 2 reversely, magnetic force F21, F22, and the reaction force of Ampere force F1 are also equal Will be reverse, that is, right side is directed to, and then the driving force vibrated repeatedly is provided to oscillator part.

Understand from the description above, for linear vibration motor of the present invention, the driving force that drive vibrator part vibrates repeatedly Reaction force and the total magnetic force sum of Ampere force will be equal to, therefore, technology according to the present invention scheme, be possible to effectively to increase to The driving force that oscillator part provides.

In order in the case of same magnetic field intensity, improve the reaction force of above-mentioned Ampere force, coil 2 can be rectangular Shape, here, based on the need for coiling, the rectangle can be curved at corner.And cause above-mentioned first edge 21 and second Edge 22 is the long leg of coil 2, and then increases the effective length of coil 2.

In order in the case of same magnetic field intensity, improve the stress of magnet assemblies 4 and the harmony of stress, two pieces of sides The set location of magnet 41a, 41b can the middle section perpendicular to direction of vibration on coil 2 it is symmetrical, wherein, the middle section By the center line of coil 2.

In order that obtaining electromagnet can produce stronger magneticaction to magnet assemblies 4, the iron core 3 can at least include position Part in the centre bore of coil 2, so that coil 2 is set in outside the part, this can not only produce stronger magnetic force, also Beneficial to the stress of balanced side magnet 41a and 41b.

In the embodiment shown in Fig. 1 and Fig. 2, the iron core 3 is fully located at the extension of the centre bore and centre bore of coil 2 In region.And, further, the center line of the iron core 3 overlaps with the center line of coil 2.

Fig. 3 is the simplified structural representation of second embodiment according to linear vibration motor of the present invention, is mainly shown in figure The drive device part of linear vibration motor is gone out.Fig. 4 is the force analysis of the oscillator part of Fig. 2 linear vibration motors.

According to Fig. 3, the embodiment is differred primarily in that with embodiment illustrated in fig. 1, and the magnet assemblies 4 are on two pieces of sides On the basis of magnet 41a, 41b, also add one piece of center magnet 42, the center magnet 42 be folded in two pieces of side magnet 41a, Between 41b, and Halbach (Halbach) arrays are formed with two pieces of side magnet 41a, 41b, this explanation, center magnet 42 fills Magnetic direction should be parallel to direction of vibration, and pointing to cause coil 2 and iron core 3 positioned at the high-intensity magnetic field side of magnet assemblies 4. In the embodiment shown in Fig. 3 and Fig. 4, for from left pointing right, i.e., left end is that S poles, right-hand member are N for the magnetizing direction of center magnet 42 Pole.

When relative Fig. 2 is reverse respectively for the magnetizing direction of side magnet 41a, 41b, the magnetizing direction of the center magnet 42 also should This reversely point to a left side from right.

Because Halbach array can produce unilateral Distribution of Magnetic Field, and logical too small amount of magnet produces most strong magnetic field, Therefore, it is possible to effectively improve the magnetic field intensity at the place of coil 2 by forming Halbach array, and then can be largely Increase the reaction force of the Ampere force that coil 2 applies to magnet assemblies 4, to improve what drive device can be provided to oscillator part Driving force.

As shown in figure 4, the force analysis of embodiment illustrated in fig. 3 is essentially identical with the force analysis of embodiment illustrated in fig. 1, only It is that embodiment illustrated in fig. 3 has stronger magnetic field intensity in the side of coil 2.

Fig. 5 is the simplified structural representation of the third embodiment according to linear vibration motor of the present invention, is mainly shown in figure The drive device part of linear vibration motor is gone out.Fig. 6 is the force analysis of the oscillator part of Fig. 5 linear vibration motors.

According to Fig. 5, in this embodiment, magnet assemblies 4 include one block of magnet 43, and the magnetizing direction of magnet 43 is parallel The first edge 21 of coil 2 is answered in a pole pair of direction of vibration, and magnet 43, another pole pair answers the second of coil 2 Edge 22.

In the embodiment shown in fig. 5, the magnetizing direction of magnet 43 is for from left to right, i.e., the left end of magnet 43 is S poles, right It is N poles to hold, therefore in this embodiment, the S of magnet 43 extremely corresponds to the first edge 21, and the N of magnet 43 extremely corresponds to the second edge 22.

In a further embodiment, the magnetizing direction of magnet 43 can also be from right to left, so that the N of magnet 43 is extremely corresponded to First edge 21, and the S of magnet 43 is extremely corresponded to the second edge.

According to Fig. 6, in this embodiment, being sent from N poles and returning to the magnetic line of force of S poles for magnet 43 is possible to substantially With vertical direction through coil 2 the first edge 21 and the second edge 22, and through the in opposite direction of two edge 21,22, because This, coil 2 will apply the reaction force of Ampere force to the left to magnet 43, and the magnetic that electromagnet will apply to the left to magnet 43 Power, so enable driving force that drive device provides be equal to the reaction force of Ampere force and magnetic force and, realize increase drive The purpose of power.

When the electric current in coil 2 is with respect to shown in Fig. 6 reversely, the reaction force of magnetic and Ampere force also will be reverse, i.e., Right side is pointed to, and then the driving force vibrated repeatedly is provided to oscillator part.

In this embodiment, magnet assemblies 4 also include that two pieces of side washer 44a, 44b, one piece of side washer 44a are arranged on magnet On end face where 43 S poles, another piece of side washer 44b be arranged on another magnetic pole N of magnet 43 where end face on, with logical The magnetic line of force at side washer 44a, 44b amendment magnet 43 two ends is crossed, and then increases the magnetic line of force perpendicular to the plane where coil 2 Component on direction, even more so that the magnetic line of force directly vertically passes through two edge 21,22.

Linear vibration motor of the present invention can include an above-mentioned drive device, it is also possible to include in a further embodiment Two or more (including two) drive device, two or more drive device is arranged in order on direction of vibration, and this is in bulk Be will be further increased in the case of permission can be supplied to the driving force of oscillator part.

Further, for the structure of the drive device shown in Fig. 1 and Fig. 3, two neighboring drive device can also be shared One block of side magnet, this causes that the current direction of respective coil meets the same time to oscillator in the wiring of the coil of each drive device The driving force that part applies equidirectional can obtain the effect being overlapped to driving force.

Fig. 7 is the 4th kind of structural representation of embodiment according to linear vibration motor of the present invention, is basically illustrated in figure The drive device part of linear vibration motor.

Fig. 7 shown on the basis of the drive device of Fig. 5, and two realities of drive device are arranged side by side on direction of vibration Apply example.

In this embodiment, the magnetizing direction of the magnet 43 of two neighboring drive device can be with conversely, to cause magnet 43 The magnetic line of force that sends of N poles can mainly return to the S poles of itself, and then magnetic field space where increasing respective coil 2 is effective Magnetic field intensity.So, the wiring of the coil 2 of two neighboring drive device should cause the sense of current of the two also conversely, with reality The now superposition of the driving force of each drive device output.

Further, in this embodiment, two neighboring drive device can share one piece of side washer.

Relative to the electromagnet structure shown in Fig. 1 to Fig. 7, Fig. 8 shows another electromagnet structure.

According to Fig. 8, the embodiment from unlike core structure in Fig. 1 to embodiment illustrated in fig. 7, iron core 3 except Outside the part 31 in the centre bore of coil 2, also including the part 32 positioned at the side of dorsad magnet assemblies 4 of coil 2, enter And cause that iron core 3 is in inverted T shape.In this embodiment, coil 2 can be directly fixedly connected on the part 32 of iron core.

Relative to the electromagnet structure shown in Fig. 1 to Fig. 7, Fig. 9 is also shown for another electromagnet structure.

According to Fig. 9, from unlike Fig. 1 to embodiment illustrated in fig. 7, iron core 3 is except positioned at coil 2 for the embodiment Part 31 in centre bore and outside the part 32 of the side of dorsad magnet assemblies 4 of coil 2, is additionally included in and wraps around line The side of sidewall portion 33 of circle 2, the i.e. iron core 3 form a storage tank 34, and coil 2 is then embedded in the storage tank 34.

Figure 10 is a kind of decomposition texture schematic diagram of the embodiment based on the linear vibration motor of drive device shown in Fig. 5.

The oscillator part of linear vibration motor, including magnet assemblies 4, mass 6 and two V-type shell fragments are shown in Figure 10 7, the relative mass block 6 of magnet assemblies 4 is fixed, and two V-type shell fragments 7 set up separately in the both sides of mass 6 on direction of vibration, and opening In the opposite direction, wherein, a free end of each V-type shell fragment 7 is fixedly connected with mass 6, another free end and upper casing 11 It is fixedly connected.

Two V-type shell fragments 7 are disposed with beneficial to the stationarity for improving oscillator partial vibration in opposite direction, are reduced humorous Shake.

The stator part of linear vibration motor, including coil 2, iron core 3, flexible PCB 8 are also show in Figure 10 (FPCB), the flexible PCB 8 exposes lead and/or pad via lower casing 12.

Also show the other parts of linear vibration motor in Figure 10, including limited block 9, block 10 etc..

The various embodiments described above primary focus describe the difference with other embodiment, but those skilled in the art should be clear Chu, the various embodiments described above can as needed be used alone or be combined with each other.

It is described above various embodiments of the present invention, described above is exemplary, and non-exclusive, and It is not limited to disclosed each embodiment.In the case of without departing from the scope and spirit of illustrated each embodiment, for this skill Many modifications and changes will be apparent from for the those of ordinary skill in art field.The selection of term used herein, purport Best explaining principle, practical application or the technological improvement to the technology in market of each embodiment, or lead this technology Other those of ordinary skill in domain are understood that each embodiment disclosed herein.The scope of the present invention is limited by appended claims It is fixed.

Claims

1. a kind of linear vibration motor, it is characterised in that filled including shell (1) and the driving being housed in the shell (1) Put with mass (6), the drive device include magnet assemblies (4) and with the magnet assemblies (4) phase separation electromagnet, it is described The relatively described mass (6) of magnet assemblies (4) is fixed；The relatively described shell (1) of the electromagnet is fixed, and the electromagnet includes Coil (2) and iron core (3), parallel to direction of vibration, the iron core (3) is including positioned at described for the plane where the coil (2) Part (31) in the centre bore of coil (2).

2. linear vibration motor according to claim 1, it is characterised in that the magnet assemblies (4) are included in described shaking The two pieces of side magnet (41a, 41b) arranged on dynamic direction are one of in the first of magnet (41a) the correspondence coil (2) Portion (21), another piece of second edge (22) of side magnet (41b) the correspondence coil (2), two blocks of side magnet (41a, 41b) Magnetizing direction conversely, and the plane where being each perpendicular to the coil (2).

3. linear vibration motor according to claim 1, it is characterised in that the magnet assemblies (4) include one block of magnet (43), the magnetizing direction of the magnet (43) is parallel to the direction of vibration, and a pole pair of the magnet (43) answers institute State the second edge (22) that first edge (21) of coil (2), another pole pair answer the coil (2).

4. linear vibration motor according to claim 3, it is characterised in that the magnet assemblies (4) also include two pieces of sides Washer (44a, 44b), one piece of side washer (44a) be arranged on a magnetic pole of the magnet (43) where end face on, another piece Side washer (44b) be arranged on another magnetic pole of the magnet (43) where end face on.

5. linear vibration motor according to claim 1, it is characterised in that the iron core (3) also includes being located at the line Enclose the part (32) of dorsad described magnet assemblies (4) side of (2).

6. linear vibration motor according to claim 5, it is characterised in that the iron core (3) is with storage tank (34), institute Coil (2) is stated to be embedded in the storage tank (34), and the coil (2) the surface towards the magnet assemblies (4) via institute Storage tank (34) is stated to expose.

7. linear vibration motor according to claim 1, it is characterised in that the coil (2) with the group of magnets First edge (21) and the second edge (22) of part (4) phase separation, and first edge (21) and second edge (22) It is each perpendicular to the direction of vibration.

8. linear vibration motor according to claim 1, it is characterised in that the shell (1) with magnetic-conductance portion (121), The magnetic-conductance portion (121) is with the coil (2) positioned at the same side of the magnet assemblies.

9. linear vibration motor according to claim 8, it is characterised in that the iron core (3) and the magnetic-conductance portion (121) Contact.

10. linear vibration motor according to any one of claim 1 to 9, it is characterised in that the linear vibration motor Including drive device described in two or more, and drive device described in two or more is arranged in order on the direction of vibration.