CN202353418U - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
- Publication number
- CN202353418U CN202353418U CN2011204786392U CN201120478639U CN202353418U CN 202353418 U CN202353418 U CN 202353418U CN 2011204786392 U CN2011204786392 U CN 2011204786392U CN 201120478639 U CN201120478639 U CN 201120478639U CN 202353418 U CN202353418 U CN 202353418U
- Authority
- CN
- China
- Prior art keywords
- vibration unit
- vibration
- vibration motor
- external frame
- linear vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000013016 damping Methods 0.000 claims abstract description 19
- 238000005452 bending Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
Images
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The utility model discloses a linear vibration motor, which comprises an external frame, a vibration unit and an electromagnet. The external frame is formed by a top surface, a bottom surface and side surfaces, the vibration unit comprises a permanent magnet and is suspended in the external frame by an elastic supporting part, the electromagnet is arranged in the external frame and is used for driving the vibration unit to generate vibration, the vibration unit and the electromagnet are disposed on the same plane which is parallel to the bottom surface of the external frame, the vibration direction of the vibration unit is parallel to the bottom surface of the external frame, the elastic supporting part is in a sheet-shaped structure and comprises bent deformation portions, and a damping part is arranged on at least one of the deformation portions. According to the linear vibration motor, compliance of the elastic supporting part is reduced, and noise is decreased, thereby the performance of the linear vibration motor is improved.
Description
Technical Field
The utility model relates to a motor field, concretely relates to linear vibration motor.
Background
The linear vibration motor includes a vibration unit, an elastic support member supporting and fixing the vibration unit, and an outer frame accommodating the vibration unit and the elastic support member. The elastic support supports the vibration unit and provides an elastic restoring force during vibration of the vibration unit. When the compliance of the elastic supporting member is large, the vibration unit is easy to collide with an external frame in the vibration process, the service life of the elastic supporting member is influenced, noise is generated, and the method for adjusting the compliance by adjusting the thickness and the width of the elastic supporting member is complex in operation and not beneficial to saving the cost. Therefore, there is a need for an improved linear vibration motor of a conventional structure to avoid the above-mentioned disadvantages.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: provided is a linear vibration motor, which can reduce the compliance of an elastic support member and improve the acoustic performance of the linear vibration motor.
In order to solve the technical problem, the technical scheme of the utility model is that: a linear vibration motor comprising:
an outer frame consisting of a top surface, a bottom surface and side surfaces;
a vibration unit including a permanent magnet, the vibration unit being suspended inside the outer frame by an elastic support;
an electromagnet installed in the outer frame for driving the vibration unit to generate vibration; wherein,
the vibration unit and the electromagnet are arranged on the same plane parallel to the bottom surface of the external frame, and the vibration direction of the vibration unit is parallel to the bottom surface of the external frame;
the elastic supporting piece is of a sheet structure and comprises a bending deformation part, and at least one deformation part is provided with a damping piece.
Further, it is preferable that the deformation portion is provided with a damper on an inner side surface, an outer side surface, or both inner and outer side surfaces thereof.
In addition, it is preferable that the elastic support is formed in two symmetrical parts, each of which includes a coupling part coupled to the outer frame, a fixing part fixed to the vibration unit, and a connecting part connecting the coupling part and the fixing part; the joint part with be equipped with first deformation portion between the connecting portion, be equipped with damping piece in the first deformation portion.
In addition, it is preferable that a second deformation portion is further provided between the fixing portion and the connecting portion, and a damping member is also provided on the second deformation portion.
In addition, the damping piece is preferably an adhesive layer, a PU or a silicone rubber sheet.
In addition, it is preferable that the elastic support is integrally formed with the outer frame.
After the technical scheme is adopted, the beneficial effects of the utility model are that: compared with the traditional structure, the utility model provides an elastic support piece sets up damping piece in crooked deformation portion, and wherein, damping piece can adopt to have elasticity and the softer material of texture like glue film, PU or silicon rubber piece, can set up at the inboard surface of deformation portion, outside surface or inside and outside both sides surface. By adopting the design, the smoothness of the elastic supporting piece is reduced, and the noise is reduced, so that the performance of the linear vibration motor is improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a perspective exploded view of a linear vibration motor according to the present invention.
Fig. 2 is a schematic perspective view of the linear vibration motor of the present invention without the groove-shaped case.
Fig. 3 is a top view of the linear vibration motor cover and the elastic supporting member according to the present invention.
In the figure: 11. the magnetic force sensor comprises a top surface, a bottom surface, a side surface, a circuit board, a magnet, a coil, an iron core, a permanent magnet, a magnetizer, a mass block, an elastic supporting piece, a joint part, a connecting part, a fixing part, a first deformation part, a second deformation part and a damping part, wherein the top surface is 12, the bottom surface is 13, the side surface is 14, the circuit board is 2, the electromagnet is 21, the coil is 22, the iron core is 31, the permanent magnet is 32, the.
Detailed Description
As shown in fig. 1 to 3, the linear vibration motor includes an external frame including a top surface 11, a bottom surface 12, and side surfaces 13, wherein the bottom surface 12 and the side surfaces 13 form a groove-shaped case, the top surface 11 is a cover body covering the groove-shaped case, and a circuit board 14 is further coupled to an outer surface of the bottom surface 12, and the circuit board 14 is used to electrically connect an internal circuit of the linear vibration motor and an external electronic circuit.
The outer frame accommodates a vibration unit and an electromagnet 2 for driving the vibration unit to vibrate. The electromagnet 2 is fixed in the external frame, and comprises an iron core 22 and a coil 21 wound on the iron core 22, and the coil 21 is electrically connected with the circuit board 14. The vibration unit is suspended inside the external frame through the elastic support piece 5, the vibration unit and the electromagnet 2 are arranged on the same plane parallel to the top surface 11 and the bottom surface 12 of the external frame, the vibration direction of the vibration unit is parallel to the top surface 11 and the bottom surface 12 of the external frame, and the elastic support piece 5 provides elastic deformation in the vibration process of the vibration unit. The linear vibration motor reduces the thickness of the product and realizes the thinning of the product.
In this implementation, the vibration unit includes a permanent magnet 31, a magnetizer 32, and a mass block 4, which are combined in sequence. The permanent magnet 31 is magnetized in a direction parallel to the bottom surface of the outer frame, and the magnetization direction is perpendicular to the extending direction of the electromagnet 2. The magnetic conductor 32 is combined with one magnetic pole of the permanent magnet 31 and has two end portions near both ends of the electromagnet 2.
The linear vibration motor operates as follows: the magnetizer 32 combined with one magnetic pole of the permanent magnet 31 is magnetized by the permanent magnet 31, and the two end magnetic poles of the magnetizer 32 are the same. After the coil 21 is connected with an electric signal through the circuit board 14, two ends of the electromagnet 2 present a certain polarity, and act on the end portions of two same magnetic poles of the magnetizer 32, according to the principle that like poles repel and unlike poles attract, and because the electromagnet 2 is fixed relative to the external frame, the permanent magnet 31 is acted by an acting force to drive the vibration unit to move under the support of the elastic support member 5. When the electric signal is an alternating current signal, the polarities of the two ends of the electromagnet 2 are changed alternately, and the direction of the acting force applied to the permanent magnet 31 is changed alternately, so that the vibration unit vibrates reciprocally to generate vibration.
The elastic support 5 is a sheet-like structure including a curved deformation portion. The bending part of the elastic support member 5 is largely deformed during the vibration of the supporting vibration unit. In the implementation process, the elastic support member 5 and the external frame are of an integral structure, so that the number of parts can be reduced, and the combination of the elastic support member 5 and the external frame is stable. The elastic support 5 is formed in two symmetrical parts, each of which includes a coupling portion 51 engaged with the top surface 11 of the outer frame, a fixing portion 53 fixedly coupled with the vibration unit, and a connecting portion 52 connecting the coupling portion 51 and the fixing portion 53. A first bending deformation part 54 is arranged between the combining part 51 and the connecting part 52, wherein the first bending deformation part 54 is of a U-shaped structure, and the damping part 6 is combined on the outer side surface of the first bending deformation part 54.
In this embodiment, a curved second deformation portion 55 is further provided between the fixing portion 53 and the connecting portion 52, and the damping member 6 is also coupled to an outer side surface of the second deformation portion 55. The damping member 6 may be made of an elastic material such as an adhesive layer, PU (polyurethane), or silicone rubber sheet.
The position where the damping member 6 is disposed is not limited to the outer side surface of the deformation portion, and the damping member 6 may be disposed on the inner side surface of the deformation portion or disposed on both the inner side surface and the outer side surface of the deformation portion.
The utility model discloses the surface that takes place the great first deformation portion 54 of deformation and the second deformation portion 55 at elastic support element 5 sets up damping part 6, can reduce elastic support element 5's compliance, noise abatement's production to linear vibrating motor's performance has been improved.
The above embodiments are only for better illustrating the invention of the present invention, and those skilled in the art can make various modifications, such as changing the specific shape of the elastic supporting member, changing the position of the deformation portion, etc., and these modifications and variations all fall within the scope of the present invention, and it should be understood that the above detailed description is only for the purpose of better explaining the present invention, and the scope of the present invention is defined by the claims and their equivalents.
Claims (6)
1. A linear vibration motor comprising:
an outer frame consisting of a top surface, a bottom surface and side surfaces;
a vibration unit including a permanent magnet, the vibration unit being suspended inside the outer frame by an elastic support;
an electromagnet installed in the outer frame for driving the vibration unit to generate vibration; the method is characterized in that:
the vibration unit and the electromagnet are arranged on the same plane parallel to the bottom surface of the external frame, and the vibration direction of the vibration unit is parallel to the bottom surface of the external frame;
the elastic supporting piece is of a sheet structure and comprises a bending deformation part, and at least one deformation part is provided with a damping piece.
2. The linear vibration motor of claim 1, wherein: and damping parts are arranged on the inner side surface, the outer side surface or the inner side surface and the outer side surface of the deformation part.
3. The linear vibration motor according to claim 1 or 2, wherein: the elastic supporting piece is composed of two symmetrical parts, and each part comprises a combination part combined with the external frame, a fixing part fixed with the vibration unit and a connecting part for connecting the combination part and the fixing part; the joint part with be equipped with first deformation portion between the connecting portion, be equipped with damping piece in the first deformation portion.
4. The linear vibration motor of claim 3, wherein a second deformation portion is further provided between the fixing portion and the connection portion, and a damping member is further provided on the second deformation portion.
5. The linear vibration motor of claim 4, wherein: the damping piece is glue layer, PU or silicon rubber sheet.
6. The linear vibration motor of claim 5, wherein the elastic support member is of a unitary structure with the outer frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204786392U CN202353418U (en) | 2011-11-26 | 2011-11-26 | Linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204786392U CN202353418U (en) | 2011-11-26 | 2011-11-26 | Linear vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353418U true CN202353418U (en) | 2012-07-25 |
Family
ID=46542381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204786392U Expired - Lifetime CN202353418U (en) | 2011-11-26 | 2011-11-26 | Linear vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353418U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317453A (en) * | 2017-06-07 | 2017-11-03 | 浙江省东阳市东磁诚基电子有限公司 | It is a kind of to make linear motor along X-axis or the motor elastic construction of Z axis vibration |
| JP2020022349A (en) * | 2018-08-03 | 2020-02-06 | エーエーシーアコースティックテクノロジーズ（シンセン）カンパニーリミテッドＡＡＣ Ａｃｏｕｓｔｉｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ（Ｓｈｅｎｚｈｅｎ）Ｃｏ．，Ｌｔｄ | Vibration motor |
-
2011
- 2011-11-26 CN CN2011204786392U patent/CN202353418U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317453A (en) * | 2017-06-07 | 2017-11-03 | 浙江省东阳市东磁诚基电子有限公司 | It is a kind of to make linear motor along X-axis or the motor elastic construction of Z axis vibration |
| CN107317453B (en) * | 2017-06-07 | 2019-06-28 | 浙江省东阳市东磁诚基电子有限公司 | It is a kind of to make linear motor along X-axis or the motor elastic construction of Z axis vibration |
| JP2020022349A (en) * | 2018-08-03 | 2020-02-06 | エーエーシーアコースティックテクノロジーズ（シンセン）カンパニーリミテッドＡＡＣ Ａｃｏｕｓｔｉｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ（Ｓｈｅｎｚｈｅｎ）Ｃｏ．，Ｌｔｄ | Vibration motor |
| US11043888B2 (en) | 2018-08-03 | 2021-06-22 | Aac Acoustic Technologies (Shenzhen) Co., Ltd. | Vibration motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |