CN106374713A - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
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- CN106374713A CN106374713A CN201610936437.5A CN201610936437A CN106374713A CN 106374713 A CN106374713 A CN 106374713A CN 201610936437 A CN201610936437 A CN 201610936437A CN 106374713 A CN106374713 A CN 106374713A
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- Prior art keywords
- flexible member
- shell
- vibration component
- vibration
- vibration motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a linear vibration motor. The linear vibration motor comprises a shell, a stator assembly and a vibration assembly, wherein the stator assembly and the vibration assembly are arranged in a reserved space of the shell; the vibration assembly is fixed on the shell through an elastic element; the stator assembly is fixed on one end wall of the shell; a damping element is arranged between the vibration assembly and the elastic element; and the damping element is laminated with the elastic element and the vibration assembly separately. The service life of the linear vibration motor can be greatly prolonged; the noise problem is relieved to the maximum degree; and in addition, influence to the movement space of a related vibration assembly is also avoided.
Description
Technical field
The present invention relates to micromachine field is and in particular to a kind of linear vibration motor.
Background technology
Vibrating motor is using the part to convert electric energy to mechanical vibration for the principle producing electromagnetic force.This vibration electricity
Machine is installed in electronic equipment, for example, communication terminal, portable terminal etc., there is incoming call for instruction under the silent mode.
Increase sharply with the mobile phone quantity using giant-screen lcd and touch screen, create to producing vibration when the user touches the screen
Vibrating motor demand.
In prior art, using generation revolving force so that the uneven rotary part of quality rotates thus obtaining mechanical vibration
Scheme.That is, prior art, using by the contact between brush and diverter, executes rectified action to turning power and obtains
The scheme of mechanical vibration.However, mechanical friction, electric spark can be produced using the electric brush type structure of diverter, and when motor rotation
Impurity can be produced, thus shortening the life-span of motor when turning brush through the space commutator segment.In addition, work as voltage is applied
When being added to motor, because of the impact of rotary inertia, result in the need for taking a certain time, the vibratory output required for can be only achieved, this makes
Must be difficult to obtain suitable vibration on the touchscreen.
In order to overcome that electrical machinery life is short and the slow problem of response speed execute the vibrating function of touch screen, main at present
Using linear vibrator.Linear vibrator is not to produce vibration using the Principle of Rotating of motor.In order to produce vibration, linearly shake
Dynamic device produces resonance according to resonant frequency by periodically producing electromagnetic force, and described electromagnetic force is by being arranged on vibration component
In magnetic structure and be arranged on the interaction of the coil in stator module and obtain.
Because installing space available in linear vibrator is limited, unavoidably collision phenomenon occurs in the course of the work, thus
The service life making linear vibrator reduces, and noise phenomena in the course of the work, affects it and normally use.In order to solve
The problems referred to above, China Patent No. is: the patent of 201420742747.x, discloses by arranging silicagel pad in shell end walls
Carry out the motion of buffering vibration associated component.But in this scheme, vibration associated component knocks silicagel pad in motion, and silicon
Rubber cushion only has cushioning effect, and its impulsive contact force still has a considerable part and passes to shell, and its noise still exists, Er Qiehui
Limit the space of vibration associated component.
Content of the invention
It is an object of the invention to provide a kind of structure is simple, easy to use, can effectively increase the service life and suppress
The linear vibration electric motor of noise.
For realizing above-mentioned technical purpose, present invention is as follows:
A kind of linear vibration motor, sets including shell, stator module and vibration component, wherein stator module and vibration component
It is placed in the headspace of shell, vibration component is fixed with shell by flexible member, stator module is fixed on shell one end wall,
It is characterized in that: be provided with damping element between vibration component and flexible member, this damping element respectively with flexible member and shaking
Dynamic component joint.
Preferably, described damping element is made up of soft foamed cotton ring.
Preferably, described shell includes upper shell and lower house, and longitudinally height is more than lower house longitudinally height to upper shell, fixed
Sub-component is arranged at lower house bottom, and vibration component is fixed on lower house top by flexible member, and upper shell is socketed on lower casing
Body.
Preferably, flexible member includes inner ring and outer ring, passes through the elastic arm of force and connects, inner ring is with outward between inner ring and outer ring
Circle is in same plane.
Preferably, vibration component bottom is fixed in the upper surface of flexible member inner ring, under the lower surface of its outer ring is fixed on
Case top.
Preferably, described stator module includes printed circuit board (PCB) and the coil being fixedly installed on this printed circuit board (PCB), institute
State vibration component and also include balancing weight, yoke and magnet, yoke is fixedly installed in the middle part of balancing weight, and magnet is fixedly installed on yoke
In headspace, between magnet lateral wall and yoke medial wall, form annular chamber, coil one end is located at annular intracavity.
Preferably, magnet ends are additionally provided with pole piece.
Preferably, the balancing weight of described vibrator component is stepped hollow circular cylinder, the diameter of the wherein first stepped portion
More than the diameter of the second stepped portion, flexible member is fixedly connected with the end face of the second stepped portion, and the first stepped portion is close
Second stepped portion one end is provided with slope.
Preferably, described damping element be socketed on the second stepped portion outside and respectively with flexible member and the first rank
The top end face laminating of terraced part.
Preferably, the outer circumferential side of described first stepped portion is provided with and one or more runs through otch.
Preferably, the described otch that runs through is 3, and is evenly distributed in the outer circumferential side of the first stepped portion.
A kind of linear vibration motor, sets including shell, stator module and vibration component, wherein stator module and vibration component
It is placed in the headspace of shell, vibration component is fixed with shell by flexible member, stator module is fixed on shell one end wall,
It is characterized in that: it is provided with damping element between vibration component and flexible member, this damping element is made up of soft foamed cotton ring.
Brief description
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be in embodiment or description of Related Art
The accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description merely relate to some of the present invention
Embodiment, not limitation of the present invention.
Fig. 1 is decomposition texture schematic diagram of the present invention.
Fig. 2 is cross-sectional view of the present invention.
Fig. 3 is counterweight block structure schematic diagram.
Fig. 4 is elastic element structure schematic diagram.
Reference: 11- upper shell, 12- lower house, 2- vibration component, 21- balancing weight, 22- yoke, 23- magnet, 24-
Pole piece, 3- damped ring, 4- flexible member, 41- outer ring, 42- inner ring, the 43- elasticity arm of force, 51- coil, 52- printed circuit board (PCB).
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme of the embodiment of the present invention is clearly fully described by.Obviously, described embodiment is the present invention
A part of embodiment, rather than whole embodiment.Based on described embodiments of the invention, ordinary skill people
The every other embodiment that member is obtained on the premise of without creative work, broadly falls into the scope of protection of the invention.
Embodiment one
As depicted in figs. 1 and 2, a kind of linear vibration motor, including shell, stator module and vibration component 2, wherein stator
Assembly and vibration component 2 are arranged in the headspace of shell, and vibration component 2 is fixed by flexible member 4 and shell, stator pack
Part is fixed on shell one end wall；Be provided with damping element 3 between vibration component 2 and flexible member 4, this damping element 3 respectively with
Flexible member 4 and vibration component 2 are fitted.Described damping element 3 can be made up of soft foamed cotton ring.The elasticity side of flexible member 4
To for oppressing elastic direction and the elastic direction of release.When vibration component 2 occurs vibration, vibration component 2 is in elastic direction to bullet
Property element 4 apply certain power, overcome the resistance of flexible member 4 and so that flexible member 4 is deformed and elasticity of saving power, thus
Vibration component 2 drives flexible member 4 to move to the elastic direction of compressing；When vibration component 2 stops to flexible member 4 applying power,
Flexible member 4 restores and discharges the elastic force of savings, and flexible member 4 drives vibration component 2 to move to the elastic direction of release.When shaking
Dynamic assembly 2 pressuring elastic element 4 when deforming, is arranged on the damping element 3 between vibration component 2 and flexible member 4
Can be oppressed, and the deflection of flexible member 4 is bigger, the compressing that damping element 3 is subject to is bigger, when pressing damping element 3
Compel extremely to prescribe a time limit, flexible member 4 cannot deform again.When actually used, compared to prior art, the present invention is applied to and shakes
The certain power of dynamic assembly 2, with pressuring elastic element 4, flexible member 4 deforms and the unit of compressing damping simultaneously under the compressing of power
Part 3, damping element 3 damping action to flexible member 4 inconspicuous when at the beginning, do not affect the vibration of vibration component 2
Acceleration, when the deflection of flexible member 4 reaches capacity and soon bumps against shell end wall, damping element 3 is urged to the limit,
Damping element 3 produces larger damping force to flexible member 4 so that it is no that flexible member 4 cannot occur more substantial deformation again
Method bumps against shell end wall, as a result, vibration component 2 also cannot bump against shell end wall, thus fundamentally solving vibration group
Part 2 and associated component bump against the situation of shell end wall under various factors, and then make noise problem obtain basic improvement, and
And the space of vibration associated component can't be impacted so that linear vibration motor is producing the same of enough vibration senses
When, service life is able to significant increase.Further, because damping element 3 is fitted with flexible member 4 and vibration component 2 respectively, that is,
Make when special circumstances (when such as falling to falling) it is also possible to thoroughly avoid flexible member 4 to bump against with vibration component 2.And if damping
Element 3 is only fitted with one of flexible member 4 or vibration component 2, when special circumstances (when such as falling to falling), damping element 3
The impulsive contact force between flexible member 4 and vibration component 2 can only be alleviated and cannot thoroughly avoid both mutually to transmit impulsive contact force.
Embodiment two
As depicted in figs. 1 and 2, a kind of linear vibration motor, including shell, stator module and vibration component 2, wherein stator
Assembly and vibration component 2 are arranged in the headspace of shell, and vibration component 2 is fixed by flexible member 4 and shell, stator pack
Part is fixed on shell one end wall；It is provided with damping element 3, described damping element 3 is soft between vibration component 2 and flexible member 4
Matter foamed cotton ring is made.The elastic direction of flexible member 4 is the elastic direction of compressing and the elastic direction of release.Occur in vibration component 2
During vibration, vibration component 2 applies certain power in elastic direction to flexible member 4, overcomes the resistance of flexible member 4 and makes elasticity
Element 4 deforms and elasticity of saving power, thus vibration component 2 drives flexible member 4 to move to the elastic direction of compressing；In vibration
When assembly 2 stops to flexible member 4 applying power, flexible member 4 restores and discharges the elastic force of savings, and flexible member 4 drives and shakes
Dynamic assembly 2 moves to the elastic direction of release.When vibration component 2 pressuring elastic element 4 and when deforming, it is arranged on vibration component
Damping element 3 between 2 and flexible member 4 also can be oppressed, and the deflection of flexible member 4 is bigger, and damping element 3 is subject to
The compressing arrived is bigger, and when damping element 3 is urged to the limit, flexible member 4 cannot deform again.When actually used,
Compared to prior art, the present invention is applied to the certain power of vibration component 2, and with pressuring elastic element 4, flexible member 4 is in power
Deform under compressing and oppress damping element 3 simultaneously, damping element 3 when at the beginning to the damping action of flexible member 4 simultaneously
Inconspicuous, do not affect the acceleration of vibration of vibration component 2, outside the deflection of flexible member 4 reaches capacity and soon bumps against
During shell end wall, damping element 3 is urged to the limit, and damping element 3 produces larger damping force to flexible member 4 so that elasticity
Element 4 cannot occur more substantial deformation cannot bump against shell end wall again, as a result, vibration component 2 also cannot bump against outward
Shell end wall, thus fundamentally solving vibration component 2 and associated component and bump against under various factors the situation of shell end wall, enters
And make noise problem obtain basic improvement, and the space of vibration associated component can't be impacted so that
While producing enough vibration senses, service life is able to significant increase to linear vibration motor.Further, damping element 3 is by soft
Foam material is made so that damping element 3 can be by the compression of large scale, so that vibration component 2 compares safety from one
Distance begin to be slowed down, and do not affect the design space in motor, when the vibration velocity of vibration component 2 be reduced to predetermined
During speed, damping element 3 blocks flexible member 4, so that flexible member 4 cannot more substantial be deformed, and makes vibration velocity return rapidly 0
And start backward acceleration motion in the presence of flexible member 4.And if using other materials, for ensureing the design in motor
Space, can only reduce the height of damping element as far as possible, so vibration component and flexible member can be in proximity
Bump against and by the damping element buffering being arranged between, but because both are colliding without under slowing down, even if being provided with slow
Punching, also mutually transmission has impulsive contact force, thus affecting whole service life and the stability of motor, particularly in special circumstances unavoidably
Under, when such as falling to falling.
Embodiment three
A kind of linear vibration motor as described in embodiment one, two, as shown in Fig. 2 its shell includes upper shell 11 He
Lower house 12, the longitudinally height of upper shell 11 is more than the longitudinally height of lower house 12, and stator module is arranged at the bottom of lower house 12
Portion, vibration component 2 is fixed on the top of lower house 12 by flexible member 4, and upper shell 11 is socketed on lower house 12.As Fig. 4 institute
Show, its flexible member 4 can include inner ring 42 and outer ring 41, pass through the elastic arm of force 43 between inner ring and outer ring and connect, inner ring 42
It is in same plane with outer ring 41.And, the bottom of vibration component 2 can be fixed in the upper surface of this flexible member 4 inner ring 42,
The top of lower house 12 can be fixed in the lower surface of its outer ring 41.
Example IV
As depicted in figs. 1 and 2, a kind of linear vibration motor, including shell, stator module and vibration component 2, wherein stator
Assembly and vibration component 2 are arranged in the headspace of shell, and vibration component 2 is fixed by flexible member 4 and shell, stator pack
Part is fixed on shell one end wall；It is provided with the damping element 3 that flexible foam circle is made between vibration component 2 and flexible member 4.As
Shown in Fig. 2, shell includes upper shell 11 and lower house 12, and the longitudinally height of upper shell 11 is more than the longitudinally height of lower house 12,
Stator module is arranged at the bottom of lower house 12, and vibration component 2 is fixed on the top of lower house 12, upper casing by flexible member 4
Body 11 is socketed on lower house 12.As shown in figure 4, flexible member 4 includes inner ring 42 and outer ring 41, logical between inner ring 42 and outer ring 41
Cross the elastic arm of force 43 to connect, vibration component 2 bottom is fixed in inner ring 42 upper surface, and outer ring 41 lower surface is fixed on lower house 12 and is pushed up
Portion, inner ring 42 and outer ring 41 are in same plane.As depicted in figs. 1 and 2, stator module includes printed circuit board (PCB) 52 and fixation sets
It is placed in the coil 51 on this printed circuit board (PCB) 52, vibration component 2 includes balancing weight 21, yoke 22 and magnet 23, yoke 22 is fixing
It is arranged in the middle part of balancing weight 21, magnet 23 is fixedly installed in yoke 22 headspace, inside magnet 23 lateral wall and yoke 22
Form annular chamber, coil 51 one end is located at annular intracavity, and magnet 23 end is additionally provided with pole piece 24 between wall.As shown in figure 3, joining
Pouring weight 21 can be stepped hollow circular cylinder, the wherein first stepped portion 214 straight with diameter greater than the second stepped portion 211
Footpath, and the first stepped portion 211 is provided with slope 212 near the second stepped portion 214 one end.Flexible member 4 and the second ladder
The end face of part 214 is fixedly connected, damping element 3 be socketed on the second stepped portion 214 outside and respectively with flexible member 4
Top end face (i.e. slope top end face) laminating with the first stepped portion 214.Damping element 3 longitudinal direction height under normal conditions can
With the longitudinally height more than the second stepped portion 211.The elastic direction of flexible member 4 is the elastic direction of compressing and release elasticity side
To.When vibration component 2 occurs vibration, vibration component 2 applies certain power in elastic direction to flexible member 4, overcomes elasticity
The resistance of element 4 simultaneously makes flexible member 4 deform and elasticity of saving power, thus vibration component 2 drives flexible member 4 to compressing
The motion of elastic direction；When vibration component 2 stops to flexible member 4 applying power, flexible member 4 restores and discharges the elasticity of savings
Power, flexible member 4 drives vibration component 2 to move to the elastic direction of release.When vibration component 2 pressuring elastic element 4 concurrently changes
During shape, the damping element 3 being arranged between vibration component 2 and flexible member 4 also can be oppressed, and the change of flexible member 4
Shape amount is bigger, and the compressing that damping element 3 is subject to is bigger, and when damping element 3 is urged to the limit, damping element 3 is to elasticity unit
Part 4 produces larger damping force so that flexible member 4 cannot occur more substantial deformation cannot bump against shell end wall again, by
This is so that vibration component 2 also cannot bump against shell end wall.Thus fundamentally solving vibration component 2 and associated component each
Bump against the situation of shell end wall under the factor of kind, and then make noise problem obtain basic improvement, and can't be to vibration phase
The space closing assembly impacts so that linear vibration motor is while producing enough vibration senses, and service life is able to pole
Big lifting.Additionally, the first stepped portion 214 in balancing weight 21 is provided with slope 212 near the second ladder 211 one end, this
This slope 212 inclined-plane that makes to fit inside its arm of force when flexible member 4 moves to the limit is set, thus not affecting to vibrate phase
So that the quality of balancing weight 21 is able to farthest on the premise of the space closing assembly and the risk that will not collide
Lifting, and then improve vibration sense.
Embodiment five
A kind of linear vibration motor as described in embodiment three, as shown in figures 1 and 3, described first stepped portion 214
Outer circumferential side can be provided with one or more run through otch 213, hindered with reducing balancing weight 21 air of being subject to when there is vibration
Power, so that the acceleration of vibration component 2 is enhanced.In the present embodiment, run through otch and be three and be evenly distributed on the
The outer circumferential side that stepped plate is divided.
Claims (9)
1. a kind of linear vibration motor, including the setting of shell, stator module and vibration component, wherein stator module and vibration component
In the headspace of shell, vibration component is fixed with shell by flexible member, and stator module is fixed on shell one end wall, its
It is characterised by: described flexible member includes inner ring and outer ring, between inner ring and outer ring, pass through elastic arm of force connection, inner ring and outer ring
Be in same plane, vibration component includes balancing weight, balancing weight be stepped hollow circular cylinder, the wherein first stepped portion straight
Footpath is more than the diameter of the second stepped portion, and flexible member is fixedly connected with the end face of the second stepped portion, and the first stepped portion is leaned on
Nearly second stepped portion one end is provided with slope.
2. as claimed in claim 1 a kind of linear vibration motor it is characterised in that: between described flexible member and vibration component also
It is provided with damping element.
3. as claimed in claim 2 a kind of linear vibration motor it is characterised in that: described damping element be soft foamed cotton ring system
Become.
4. as claimed in claim 2 a kind of linear vibration motor it is characterised in that: described damping element respectively with flexible member and
Vibration component is fitted.
5. as claimed in claim 1 a kind of linear vibration motor it is characterised in that: described shell includes upper shell and lower house,
Longitudinally height is more than lower house longitudinally height to upper shell, and stator module is arranged at lower house bottom, and vibration component passes through elasticity unit
Part is fixed on lower house top, and upper shell is socketed on lower house.
6. as claimed in claim 5 a kind of linear vibration motor it is characterised in that: the upper surface of flexible member inner ring is fixed on and is shaken
Dynamic component bottom, lower house top is fixed in the lower surface of its outer ring.
7. as claimed in claim 1 a kind of linear vibration motor it is characterised in that: described stator module include printed circuit board (PCB) and
It is fixedly installed on the coil on this printed circuit board (PCB), described vibration component also includes balancing weight, yoke and magnet, yoke fixation sets
It is placed in the middle part of balancing weight, magnet is fixedly installed in yoke headspace, between magnet lateral wall and yoke medial wall, form ring
Shape chamber, coil one end is located at annular intracavity.
8. as described in Claims 2 or 3 a kind of linear vibration motor it is characterised in that: described damping element is socketed on second-order
The outside of terraced part and fitting with the top end face of flexible member and the first stepped portion respectively.
9. as claimed in claim 1 a kind of linear vibration motor it is characterised in that: the setting of the outer circumferential side of described first stepped portion
Have and one or more run through otch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936437.5A CN106374713B (en) | 2016-11-01 | 2016-11-01 | A kind of linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936437.5A CN106374713B (en) | 2016-11-01 | 2016-11-01 | A kind of linear vibration motor |
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| Publication Number | Publication Date |
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| CN106374713A true CN106374713A (en) | 2017-02-01 |
| CN106374713B CN106374713B (en) | 2019-03-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610936437.5A Active CN106374713B (en) | 2016-11-01 | 2016-11-01 | A kind of linear vibration motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107131195A (en) * | 2017-06-21 | 2017-09-05 | 贵州中龙机电有限公司 | A kind of semi-automatic patch foam machine and motor process equipment |
| WO2018082205A1 (en) * | 2016-11-01 | 2018-05-11 | 四川安和精密电子电器有限公司 | Linear vibration motor |
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| CN203326847U (en) * | 2013-05-14 | 2013-12-04 | 三星高新电机（天津）有限公司 | Linear vibration motor |
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| CN105871167A (en) * | 2016-05-26 | 2016-08-17 | 歌尔声学股份有限公司 | Linear vibration motor |
| CN206135678U (en) * | 2016-11-01 | 2017-04-26 | 四川安和精密电子电器有限公司 | Linear vibrating motor |
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| WO2001096035A1 (en) * | 2000-06-16 | 2001-12-20 | Namiki Seimitsu Houseki Kabushiki Kaisha | Electromagnetic induction type actuator and portable communications device |
| CN1926915A (en) * | 2004-02-27 | 2007-03-07 | 并木精密宝石株式会社 | Multifunction type vibration actuator and portable communication equipment |
| CN102883249A (en) * | 2011-07-12 | 2013-01-16 | 并木精密宝石株式会社 | Vibration characteristic adjusting method of multifunctional vibration actuator |
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| WO2018082205A1 (en) * | 2016-11-01 | 2018-05-11 | 四川安和精密电子电器有限公司 | Linear vibration motor |
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| Publication number | Publication date |
|---|---|
| CN106374713B (en) | 2019-03-26 |
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Address after: No. 261, Eastern Section of Feiyun Avenue, Mianyang High-tech Zone, Sichuan Province, 621000 Patentee after: SICHUAN AWA SEIMITSU ELECTRIC Co.,Ltd. Address before: No. 261, Eastern Section of Feiyun Avenue, Mianyang High-tech Zone, Sichuan Province, 621000 Patentee before: SICHUAN ANHE PRECISION ELECTRONIC ELECTRICAL APPLIANCES Co.,Ltd. |
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Denomination of invention: A linear vibration motor Effective date of registration: 20210623 Granted publication date: 20190326 Pledgee: Agricultural Bank of China Limited by Share Ltd. Mianyang Fucheng branch Pledgor: SICHUAN AWA SEIMITSU ELECTRIC Co.,Ltd. Registration number: Y2021980005174 |
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Date of cancellation: 20220801 Granted publication date: 20190326 Pledgee: Agricultural Bank of China Limited by Share Ltd. Mianyang Fucheng branch Pledgor: SICHUAN AWA SEIMITSU ELECTRIC Co.,Ltd. Registration number: Y2021980005174 |