CN106208606B - A kind of linear vibration motor - Google Patents
A kind of linear vibration motor Download PDFInfo
- Publication number
- CN106208606B CN106208606B CN201610676887.5A CN201610676887A CN106208606B CN 106208606 B CN106208606 B CN 106208606B CN 201610676887 A CN201610676887 A CN 201610676887A CN 106208606 B CN106208606 B CN 106208606B
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- movable body
- pedestal
- permanent magnet
- vibration motor
- linear vibration
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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
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The present invention provides a kind of linear vibration motors, including shell, vibrational system and stator system, vibrational system includes vibration unit and oscillator, wherein, vibration unit includes pedestal, movable body and connector sleeve, and pedestal is fixedly connected with the casing, and pedestal is equipped with recess portion, movable body is matched with recess portion so that movable body moves in recess portion, and connector sleeve is set on the outer surface of movable body, and connector sleeve links together with oscillator so that oscillator is moved synchronously with movable body；Oscillator includes weight block and is embedded the permanent magnet in weight block, and the quantity of permanent magnet is even numbers, and permanent magnet is oppositely arranged two-by-two, wherein the magnetic pole that two permanent magnets being oppositely arranged are located at the same side is synonyms pole.The invention solves a technical problem be: simplify vibrating member structure.A purposes of the invention is: being used for portable electronic product.
Description
Technical field
The present invention relates to vibratory equipment fields, more particularly, to a kind of linear vibration motor.
Background technique
With the development of communication technology, the portable electronics such as mobile phone, handheld device or palm multimedia entertainment equipment
Product becomes more and more popular.In order to facilitate the interaction realized between people and portable electronic product, linear oscillator is generallyd use
Motor realizes the e.g. functions such as vibrational feedback of the incoming call prompting of mobile phone, game machine.However, as people are to portable electric
The performance requirement of the raising that sub- properties of product require, internal various components also increases accordingly, linear vibration motor also not example
Outside.
Existing linear vibration motor includes shell, vibrational system and stator system, wherein has closed receiving in shell
Space, vibrational system and stator system are respectively positioned in above-mentioned accommodating space, and vibrational system includes elastic slice and oscillator, wherein oscillator packet
Weight block and permanent magnet are included, stator system includes coil, permanent magnet band spring plate under the action of electromagnetic push after coil is powered
Straight reciprocating motion is acted as with weight block one, realizes the vibrating function of linear vibration motor.
Since existing linear vibration motor connects oscillator and shell by elastic slice, the linear oscillator of this structure
Motor is more demanding to the service life of the elastic slice as connector so that the manufacture complexity and cost of elastic slice significantly on
It rises, and the elastic slice as vibrating member is difficult to meet people to linear vibration motor complex vibration frequency and multi-direction vibration
It is required that.
Summary of the invention
It is an object of the present invention to provide a kind of new solutions of linear vibration motor, to simplify the knot of vibrating member
Structure improves vibration sensitivity, meets the requirement to complex vibration frequency and multi-direction vibration, extends the use of linear vibration motor
Service life.
According to the first aspect of the invention, a kind of linear vibration motor, including shell, vibrational system and stator system are provided
System, the vibrational system includes vibration unit and oscillator, wherein the vibration unit includes pedestal, movable body and connector sleeve, institute
Pedestal is stated to be fixedly connected with the shell, and the pedestal be equipped with recess portion, the movable body matched with the recess portion so that
The movable body moves within the recess, and the connector sleeve is set on the outer surface of the movable body, and the connector sleeve
It is linked together with the oscillator so that the oscillator is moved synchronously with the movable body；The oscillator includes weight block and is embedded
The quantity of permanent magnet in the weight block, the permanent magnet is even numbers, and the permanent magnet is oppositely arranged two-by-two, wherein
The magnetic pole that two permanent magnets being oppositely arranged are located at the same side is synonyms pole.
Optionally, the recess portion is arc-shaped depression portion.
Optionally, the movable body has spherical form.
Optionally, the connector sleeve along the height of radial direction of the movable body be greater than the half of the movable body
Diameter.
Optionally, it is separate along the highest point on the direction perpendicular to the pedestal to be located at the connector sleeve for the movable body
In plane where the end face of the pedestal or the movable body is located at along the highest point on the direction perpendicular to the pedestal
Between plane and the pedestal where end face of the connector sleeve far from the pedestal.
Optionally, the permanent magnet includes two pairs, and the magnetic pole that two pairs of permanent magnets are located at the same side is arranged with rectangular shape
Column.
Optionally, the stator system includes coil, and the coil has elliptical shape, and the long axis of the coil is cut
The magnetic induction line between the permanent magnet in the long side of the rectangular shape is cut, the short axle cutting of the coil is located at described
The magnetic induction line between the permanent magnet on the short side of rectangular shape.
Optionally, the shell includes the lower casing of hood-like upper casing and plate, and the upper casing is fixedly connected with the lower casing.
Optionally, the pedestal is fixedly connected with the surface of the side wall of the upper casing and/or the lower casing.
Optionally, the quantity of the vibration unit is even numbers, and the vibration unit is oppositely arranged two-by-two.
It was found by the inventors of the present invention that in the prior art, be implicitly present in elastic slice manufacture complexity and at high cost, Yi Jinan
The problem of to meet requirement of the people to linear vibration motor complex vibration frequency and multi-direction vibration.Therefore, institute of the present invention
The technical assignment to be realized or never expect the technical problem to be solved is that those skilled in the art or it is not anticipated that
It arrives, therefore the present invention is a kind of new technical solution.
The vibration unit of linear vibration motor of the present invention is moved in pedestal by movable body drives oscillator to move synchronously, phase
The vibration of oscillator is realized by the elastic force of elastic slice for the prior art, this vibration unit structure is simple, easily manufactured, cost
Low, movement of the movable body in pedestal is convenient to realize the requirement of complicated vibration frequency and multi-direction vibration, moreover, phase
It is that synonyms pole makes the high-efficient of stator system cutting magnetic induction line to the magnetic pole that two permanent magnets of setting are located at the same side, mentions
The high utilization rate in magnetic field, to improve the sensitivity of linear vibration motor vibration.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the explosive view of linear vibration motor embodiment of the present invention；
Fig. 2 is the top view of linear vibration motor embodiment of the present invention；
Fig. 3 is the coil of linear vibration motor embodiment of the present invention and the structural schematic diagram of permanent magnet；
Fig. 4 is the cut-away view of linear vibration motor embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the vibration unit embodiment of linear vibration motor of the present invention.
It is indicated in figure as follows:
Vibration unit -1, pedestal -11, recess portion -111, movable body -12, connector sleeve -13, upper casing -2, lower casing -3, coil -4,
Weight block -5, permanent magnet -6.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
In order to solve the manufacture complexity of elastic slice and at high cost, and it is difficult to meet people to linear vibration motor complex vibration
The problem of requirement of frequency and multi-direction vibration, the present invention provides a kind of linear vibration motors, as shown in Figures 1 to 5, packet
Shell, vibrational system and stator system are included, above-mentioned shell can be the shell of integration or be made of multiple housing units, shell tool
There is the accommodating space of receiving vibrational system and stator system, the typical structure of above-mentioned vibrational system includes oscillator and makes oscillator vibration
Vibrating member or vibration unit, the typical structure of above-mentioned oscillator includes magnet and weight block or mass block, said stator system
Typical structure includes coil and FPCB, and coil drives vibrational system vibration by access external electric signal；The vibrational system packet
Include vibration unit 1 and oscillator, wherein the vibration unit 1 includes pedestal 11, movable body 12 and connector sleeve 13, the pedestal 11
It is fixedly connected with the shell, and the pedestal 11 is equipped with recess portion 111, the movable body 12 is matched with the recess portion 111
So that the movable body 12 moves in the recess portion 111, the connector sleeve 13 is set on the outer surface of the movable body 12,
And the connector sleeve 13 links together with the oscillator so that the oscillator is moved synchronously with the movable body 12, this field skill
Art personnel are it should be clear that according to the concrete shape flexibly changing of the above-mentioned recess portion 111 of shape of movable body 12, for example, spherical
The recess portion 111 of movable body 12 and rectangle, the perhaps recess portion 111 or spherical movable body of spherical movable body 12 and arc
12 and the recess portion 111 with flat bottom surface, as long as the magnet of vibrational system exists after the coil for being that by stator system is powered
The structure for making vibration unit 1 that weight block be driven to move together under the action of electromagnetic push, certainly, movable body 12 is in recess portion
Specifically motion mode in 111 is determined by the shape of movable body 12 and recess portion 111, for example, can be to slide or roll etc., separately
Outside, the mode that above-mentioned pedestal 11 is fixedly connected with shell can be welding or gluing etc., and the connection type of connector sleeve 13 and oscillator can
To weld or being embedded in oscillator；The oscillator includes weight block 5 and the permanent magnet 6 that is embedded in the weight block 5, it is described forever
The quantity of magnet 6 is even numbers, and the permanent magnet 6 is oppositely arranged two-by-two, wherein two be oppositely arranged the permanent magnet 6
Magnetic pole in the same side is synonyms pole, that is, two opposite permanent magnets 6 are located at the magnetic pole difference of the same side of weight block 5
For the pole N and the pole S.
Detailed process is as follows for linear vibration motor vibration of the invention: after the coil of stator system is powered, vibrational system
Permanent magnet 6 drive the movable body 12 of weight block 5 and vibration unit 1 together in the recess portion of pedestal 11 under the action of electromagnetic push
It is moved synchronously in 111, to realize that linear vibration motor is vibrated according to the realization of different vibration frequency and direction of vibration.
The vibration unit 1 of linear vibration motor of the present invention is moved in pedestal 11 by movable body 12 drives the synchronous fortune of oscillator
It is dynamic, the vibration of oscillator is realized by the elastic force of elastic slice compared with the existing technology, this 1 structure of vibration unit is simple, manufacturer
Just, at low cost, movement of the movable body 12 in pedestal 11 is convenient to realize complicated vibration frequency and multi-direction vibration
It is required that moreover, the magnetic pole that two permanent magnets 6 being oppositely arranged are located at the same side is that synonyms pole makes stator system cutting magnetic induction
Line it is high-efficient, improve the utilization rate in magnetic field, thus improve linear vibration motor vibration sensitivity.
In a preferred embodiment of the invention, the recess portion 111 is arc-shaped depression portion, i.e. recess portion 111 has arc shape
Shape, this arc-shaped depression portion are conducive to improve the sensitivity of linear vibration motor and realize more flexible vibration.
In order to further improve the sensitivity of linear vibration motor vibration, the movable body 12 has spherical form, this
The movable body 12 of kind spherical form is conducive to movable body 12 and moves in the recess portion 111 of pedestal 11 for greater flexibility.It is specific at one
In ground embodiment, the movable body 12 of spherical form moves in the recess portion 111 for arc-shaped depression portion, i.e., movable body 12 is in recess portion 111
Middle carry out rolling movement, in this embodiment, by adjusting the size of recess portion 111 and the radian of arc, and adjustment movable body
The vibration frequency of adjustment linear vibration motor in different directions can be realized in 12 diameter.
Movable body 12 is detached from from connector sleeve 13 in order to prevent, the connector sleeve 13 along the movable body 12 radial direction
The height in direction be greater than the movable body 12 radius, that is, connector sleeve 13 can at least envelope movable body 12 more than half
Surface area.Those skilled in the art can be readily apparent that the shape of connector sleeve 13 can be arranged according to actual needs, for example, connection
The shape of the movable body 12 of the shape and spherical form of set 13 matches or the shape of connector sleeve 13 is rectangular shape and connects
The side wall of set 13 and the surface of weight block link together.
In another preferred embodiment of the invention, the movable body 12 is along on the direction perpendicular to the pedestal 11
Highest point be located in the plane where end face of the connector sleeve 13 far from the pedestal 11 or the movable body 12 is along hanging down
The directly plane where the highest point on the direction of the pedestal 11 is located at end face of the connector sleeve 13 far from the pedestal 11
Between the pedestal 11, that is, connector sleeve 13 can coat spherical hemispherical portion of the movable body 12 far from pedestal 11 completely,
Certainly, when meeting the connector sleeves 13 of above-mentioned requirements and being embedded in weight block, it is ensured that movable body 12 is not in contact with weight block, from
And weight block is avoided to interfere with flexibility when movable body 12 moves in recess portion 111.
In another preferred embodiment of the invention, the permanent magnet 6 includes two pairs, and two pairs of permanent magnets 6 are located at
The magnetic pole of the same side is arranged with rectangular shape, by taking Fig. 2 and linear vibration motor embodiment illustrated in fig. 3 as an example, two pairs of permanent magnetism
Body 6 is embedded in weight block 5 in a manner of horizontal and vertical arrangement, and four permanent magnets 6 surround a rectangular shape.
Further, the stator system includes coil 4, and the coil 4 has elliptical shape, and the coil 4
Long axis cutting is located at the magnetic induction line between the permanent magnet 6 in the long side of the rectangular shape, the short axle cutting of the coil 4
The magnetic induction line between the permanent magnet 6 on the short side of the rectangular shape, this set make the long axis of coil 4 and short
Axis efficiently cuts the magnetic induction line between permanent magnet 6 facing each other, and magnetic field utilization rate is high, the spirit of linear vibration motor vibration
Sensitivity is high.
Optionally, the shell includes the lower casing 3 of hood-like upper casing 2 and plate, and the upper casing 2 and the lower casing 3 are fixed
Connection, above-mentioned be fixedly connected can be realized by way of welding or gluing.Further, the pedestal 11 and the upper casing 2
The surface of side wall and/or the lower casing 3 is fixedly connected, and above-mentioned be fixedly connected can be realized by way of welding or gluing, thus
Pedestal 11 and the shell of linear vibration motor are fixed together, moreover, the shape of pedestal 11 is preferably regular shape, for example,
Pedestal 11 is the similar rectangular shape to match with hood-like upper casing 2, at this time the side wall of the side wall of pedestal 11 and upper casing 2 and/
Or the bottom wall of pedestal 11 is fixedly connected with the surface of lower casing 3.Further, coil 4 is fixed on lower casing 3, and certainly, FPCB can also
It is fixed on lower casing 3, moreover, the quantity of coil 4 can be arranged according to actual needs, the use of one or more groups of coils 4 can make
Linear vibration motor has more direction of vibration.
In order to further improve the service life of linear vibration motor vibration, the quantity of the vibration unit 1 is even numbers,
And the vibration unit 1 is oppositely arranged two-by-two, by taking the weight block 5 of rectangular shape as an example, vibration unit 1 is preferably 4, and 4
A vibration unit 1 is separately positioned on four right angles of weight block 5.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (9)
1. a kind of linear vibration motor, including shell, vibrational system and stator system, which is characterized in that the vibrational system packet
Include vibration unit and oscillator, wherein the vibration unit includes pedestal, movable body and connector sleeve, the pedestal and the shell
It is fixedly connected, and the pedestal is equipped with recess portion, the movable body is matched with the recess portion so that the movable body is described
Movement in recess portion, the connector sleeve is set on the outer surface of the movable body, and the connector sleeve is connected to the oscillator
Together so that the oscillator is moved synchronously with the movable body；The oscillator includes weight block and is embedded in the weight block
The quantity of permanent magnet, the permanent magnet is even numbers, and the permanent magnet is oppositely arranged two-by-two, wherein two institutes being oppositely arranged
Stating permanent magnet to be located at the magnetic pole of the same side is synonyms pole；
The permanent magnet being oppositely arranged is arranged with rectangular shape；
The movable body has spherical form.
2. linear vibration motor according to claim 1, which is characterized in that the recess portion is arc-shaped depression portion.
3. linear vibration motor according to claim 2, which is characterized in that the connector sleeve along the movable body
The height of radial direction is greater than the radius of the movable body.
4. linear vibration motor according to claim 1 or 3, which is characterized in that the movable body is along perpendicular to described
Highest point on the direction of pedestal is located in the plane where end face of the connector sleeve far from the pedestal or the movable body
The plane being located at where end face of the connector sleeve far from the pedestal along the highest point on the direction perpendicular to the pedestal
Between the pedestal.
5. linear vibration motor according to claim 1, which is characterized in that the permanent magnet includes two pairs, described in two pairs
The magnetic pole that permanent magnet is located at the same side is arranged with rectangular shape.
6. linear vibration motor according to claim 5, which is characterized in that the stator system includes coil, the line
Circle has elliptical shape, and the long axis cutting of the coil is located between the permanent magnet in the long side of the rectangular shape
Magnetic induction line, the coil short axle cutting be located at the rectangular shape short side on the permanent magnet between magnetic induction line.
7. linear vibration motor according to claim 1, which is characterized in that the shell includes hood-like upper casing and plate
Lower casing, the upper casing is fixedly connected with the lower casing.
8. linear vibration motor according to claim 7, which is characterized in that the side wall of the pedestal and the upper casing and/
Or the surface of the lower casing is fixedly connected.
9. linear vibration motor according to claim 1, which is characterized in that the quantity of the vibration unit is even numbers, and
The vibration unit is oppositely arranged two-by-two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676887.5A CN106208606B (en) | 2016-08-16 | 2016-08-16 | A kind of linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676887.5A CN106208606B (en) | 2016-08-16 | 2016-08-16 | A kind of linear vibration motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106208606A CN106208606A (en) | 2016-12-07 |
| CN106208606B true CN106208606B (en) | 2019-04-12 |
Family
ID=57522899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610676887.5A Active CN106208606B (en) | 2016-08-16 | 2016-08-16 | A kind of linear vibration motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN106208606B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003244921A (en) * | 2002-02-14 | 2003-08-29 | Matsushita Refrig Co Ltd | Linear motor and linear compressor |
| CN203747559U (en) * | 2014-01-10 | 2014-07-30 | 瑞声光电科技(常州)有限公司 | Vibration motor |
| CN205283368U (en) * | 2015-11-25 | 2016-06-01 | 歌尔声学股份有限公司 | Linear vibrating motor |
| CN105743318A (en) * | 2016-01-29 | 2016-07-06 | 瑞声光电科技(常州)有限公司 | Vibration motor |
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2016
- 2016-08-16 CN CN201610676887.5A patent/CN106208606B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106208606A (en) | 2016-12-07 |
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