CN205753918U - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
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- CN205753918U CN205753918U CN201620512990.1U CN201620512990U CN205753918U CN 205753918 U CN205753918 U CN 205753918U CN 201620512990 U CN201620512990 U CN 201620512990U CN 205753918 U CN205753918 U CN 205753918U
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- washer
- vibration motor
- linear vibration
- shell
- arc
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- 239000011553 magnetic fluid Substances 0.000 description 22
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
This utility model provides a kind of linear vibration motor, including housing and the vibrational system that is contained in housing, wherein, vibrational system includes frame, the permanent magnet being housed in frame, and be sticked at permanent magnet away from the washer of frame side, wherein, washer is provided with central channel, and in central channel, is provided with magnetic liquid.Utilize this utility model, it is possible to solution washer and housing in vibration processes collide and produce the problem of noise, and avoid the waste of oscillation space.
Description
Technical Field
The utility model relates to a consumer electronics technical field, more specifically relates to a linear vibrating motor of portable consumer electronics product.
Background
With the development of communication technology, portable electronic products, such as mobile phones, handheld game consoles or handheld multimedia entertainment devices, have come into the lives of people. In these portable electronic products, a micro vibration motor is generally used for system feedback, such as incoming call prompt of a mobile phone, vibration feedback of a game machine, and the like. However, with the trend of electronic products being lighter and thinner, various components inside the electronic products also need to adapt to the trend, and micro vibration motors are no exception.
The existing linear vibration motor comprises an upper shell, a lower shell, a vibration system and a stator system, wherein the vibration system and the stator system are contained in a containing cavity formed by the upper shell and the lower shell, the vibration system comprises a mass block, a permanent magnet, a washer, a basin frame and an elastic sheet, and the stator system comprises an FPCB (Flexible Printed Circuit Board) and a coil. In the structure of the existing linear vibration motor, the washer is of a triangular structure, and in the vibration process of a vibration system, the triangular washer collides with the lower shell to generate noise, so that the performance and the service life of a product are influenced.
Therefore, in order to solve the above problems, the present invention provides a novel linear vibration motor.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a linear vibration motor to solve the problem of noise generated by the collision between the washer and the housing during the vibration process, and to avoid the waste of vibration space.
The utility model provides a linear vibrating motor, include the casing and accept in the vibration system of casing, wherein, vibration system includes the basin frame, accepts the permanent magnet in the basin frame to and paste and establish the department of china who keeps away from basin frame one side at the permanent magnet, wherein, be provided with central groove on the department of china, and be provided with the magnetic fluid at central inslot.
In addition, the central groove is preferably a central through hole, and the magnetic fluid is disposed in the central through hole.
In addition, the preferred structure is that the washer is polygonal or circular; wherein,
when the washer is polygonal, each corner of the washer is a chamfer, the sideline of the chamfer is an arc sideline, and the arc sideline is provided with magnetic fluid.
In addition, the preferable structure is that when the washer is a quadrilateral washer, four corners of the quadrilateral washer are chamfers, the sidelines of the chamfers are arc sidelines, and magnetic fluid is arranged on the arc sidelines.
In addition, the preferable structure is that when the washer is a trilateral washer, three corners of the trilateral washer are chamfers, the sidelines of the three chamfers are arc-shaped sidelines, and magnetic liquid is arranged on the arc-shaped sidelines.
In addition, the preferred structure is that the vibration system also comprises a mass block which is sleeved and fixed on the outer side of the basin frame; the mass block is of a circular ring structure, and the inner side of the mass block is fixedly connected with the side wall of the basin frame in a gluing mode.
In addition, the preferred structure is that the vibration system is supported and suspended in the shell through the elastic sheet; the elastic sheet is a conical sheet type spring and comprises a fixed end connected with the shell, a fixed disc connected with the vibration system and an elastic connecting arm positioned between the fixed end and the fixed disc.
In addition, the preferred structure is that the fixed disk of the elastic sheet is fixedly connected with the mass block, and the fixed end of the elastic sheet is fixedly connected with the lower shell of the shell.
In addition, it is preferable that the elastic piece has an elastic deformation space in a vertical direction, and the vibration system vibrates in the vertical direction under support of the elastic piece.
Further, it is preferable that the linear vibration motor further includes a stator system housed in the case; wherein the stator system includes a coil and a FPCB; one end of the coil is suspended in a magnetic gap formed between the side wall of the basin stand and the permanent magnet, and the other end of the coil is fixedly conducted with the FPCB.
According to the technical scheme above, the utility model provides a linear vibrating motor sets up central through-hole in the intermediate position of china department to pour into magnetic fluid into, prevent the noise that the collision produced between china department and the inferior valve, and increased linear vibrating motor's vibration space, avoid the waste in vibration space.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is an exploded view schematically illustrating a linear vibration motor according to an embodiment of the present invention;
Fig. 2 is a schematic cross-sectional view of a linear vibration motor according to an embodiment of the present invention;
fig. 3-1 is a schematic plan structure view of a quadrilateral washer according to an embodiment of the present invention;
fig. 3-2 is a schematic perspective view of a quadrilateral washer according to an embodiment of the present invention;
fig. 3-3 are schematic sectional structural diagrams of a quadrilateral washer according to an embodiment of the present invention;
fig. 4-1 is a schematic plan structure view of a circular washer according to an embodiment of the present invention;
fig. 4-2 is a schematic perspective view of a circular washer according to an embodiment of the present invention;
fig. 4-3 are schematic cross-sectional structural views of a circular washer according to an embodiment of the present invention;
fig. 5-1 is a schematic plan structure view of a triangular washer according to an embodiment of the present invention;
fig. 5-2 is a schematic perspective view of a triangular washer according to an embodiment of the present invention;
fig. 5-3 are schematic sectional structure views of a triangular washer according to an embodiment of the present invention.
Wherein the reference numerals include: the device comprises an upper shell 1, a mass block 2, a basin stand 3, a permanent magnet 4, a washer 5, a central through hole 51, magnetic liquid 52, a coil 6, an elastic sheet 7, an FPCB8 and a lower shell 9.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As used in the description of the embodiments below, the "mass" may also be referred to as a "counterweight", and refers to a high quality, high density metal mass that is secured to a vibrating mass that generates vibrations to enhance the vibration balance.
In addition, the utility model discloses mainly used micro-vibration motor's improvement, nevertheless do not exclude to be applied to large-scale vibration motor with the technique in the utility model. However, for the sake of expression, in the following description of the embodiments, "linear vibration motor" and "micro vibration motor" are denoted to have the same meaning.
In order to illustrate the structure of the linear vibration motor provided by the present invention, fig. 1 to 2 exemplarily indicate the structure of the linear vibration motor from different angles, respectively. Specifically, fig. 1 shows an exploded structure of a linear vibration motor according to an embodiment of the present invention; fig. 2 shows a sectional structure of a linear vibration motor according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2 together, the utility model provides a linear vibration motor includes the casing and accepts in the vibration system and the stator system of casing, and vibration system includes basin frame 3, accepts permanent magnet 4 in basin frame 3, pastes and establishes the china department 5 of keeping away from basin frame 3 one side at permanent magnet 4 to and the cover is established and is fixed at the quality piece 2 in the basin frame 3 outside. Wherein, a central groove is arranged on the washer 5, and magnetic liquid is arranged in the central groove. That is, the central groove may be a central through hole or a central pressing thin, and the magnetic fluid is disposed in the central through hole or the central pressing thin.
In one embodiment of the present invention, the central groove is a central through hole 51, and a magnetic liquid 52 is disposed in the central through hole 51. The washer 5 is polygonal or circular; when the washer is polygonal, each corner of the washer is a chamfer, the sideline of the chamfer is an arc sideline, and the magnetic liquid 52 is arranged on the arc sideline.
Specifically, the housing comprises an upper shell 1 and a lower shell 9 matched with the upper shell 1; wherein, the upper casing 1 is a semi-closed cylindrical structure, and the lower casing 9 is fixed at the open end of the upper casing 1. The mass block 2 is of a circular ring structure, and the inner side of the mass block 2 is fixedly attached to the periphery of the side wall of the basin frame 3. The vibration system is supported and suspended in the shell by the elastic sheet 7, one end of the elastic sheet 7 is fixedly connected with the mass block 2, and the other end of the elastic sheet is fixedly connected with the lower shell 9 of the shell, so that the vibration system is suspended in the shell, and the elastic restoring force is provided for the vibration of the vibration system through the elastic sheet 7. The basin frame 3, the permanent magnet 4 and the washer 5 in the vibration system form a magnetic circuit system, the permanent magnet 4 is contained in the basin frame 3, the washer 5 is attached to one side, far away from the basin frame 3, of the permanent magnet 4, and a magnetic gap is formed between the side wall of the basin frame 3 and the permanent magnet 4. The stator system includes a coil 6 and an FPCB8, wherein one end of the coil 6 is suspended in the magnetic gap, the other end of the coil 6 is fixedly conducted with an electric connector FPCB8, and the electric connector FPCB8 is fixed on the lower case 9 and connected with an external circuit.
Wherein, the vibration system is supported and suspended in the shell through the elastic sheet 7; the elastic sheet is a conical sheet type spring and comprises a fixed end connected with the shell, a fixed disc connected with the vibration system and an elastic connecting arm positioned between the fixed end and the fixed disc. The elastic sheet 7 is provided with an elastic deformation space along the vertical direction, and the vibration system vibrates along the vertical direction under the support of the elastic sheet 7.
The embodiment of the utility model provides an among the linear vibration motor, basin frame 3 can adopt the material preparation of high magnetic conduction to form, can play radiating effect through gummed mode and 2 fixed connection of quality piece in the use, avoids magnetic circuit during operation high temperature, guarantees linear vibration motor's stable performance.
In addition, in order to enhance the vibration sense of the linear vibration motor and the vibration balance of the mass block 2, the mass block 2 can be made of high-density metal materials such as tungsten steel blocks, nickel steel blocks or nickel-tungsten alloys, and the vibration force of the mass block 2 is increased, so that the vibration of the electronic product is stronger.
Wherein, the coil 6 in the stator system is connected with current signals, and according to the left-hand rule: the left hand is stretched to enable the thumb to be perpendicular to the other four fingers and to be located in the same plane, magnetic induction lines generated by the coil 6 flow in from the palm of the hand, the four fingers point to the direction of the introduced current, and the pointing direction of the thumb is the direction of the ampere force applied to the coil 6. Since the coil 6 is fixed to the electric connector FPCB8 so as not to move, the magnetic circuit system receives a driving force in the direction opposite to that of the coil 6 based on the relationship between the acting force and the reaction force. When the direction of the current led into the coil 6 is changed, the direction of the reaction force applied to the magnetic circuit system is changed, and the above motions are alternately carried out, so that the vibration system consisting of the magnetic circuit system and the mass block 2 reciprocates in the shell, and the vibration of the linear vibration motor is realized.
The embodiment of the utility model provides an among the linear vibration motor, inject into magnetic fluid 52 at central through-hole 51 of china department 5, magnetic fluid 52 plays damped effect. When the vibration system vibrates, the washer is easy to collide with the lower shell, and the magnetic liquid 52 in the central through hole 51 can collide between the reverse washer 5 and the lower shell 9 to generate noise. The utility model discloses a design of above-mentioned magnetic fluid compares and adds the cotton mode of bubble on the inferior valve, the utility model has the advantages of, except the production that can the noise prevention, can also avoid the waste in vibration space under the linear vibration motor effectively.
In addition, in order to prevent the collision between the washer 5 and the coil 6 from generating noise, the utility model discloses also pour into magnetic fluid 52 into in the sideline of washer, wherein, washer 5 is polygon washer or circular washer, and each angle of polygon washer is the rounding off, and the sideline of chamfer is convex to pour into magnetic fluid 52 into in every convex edge, in order to prevent the collision between washer 5 and the coil 6; the magnetic liquid 52 is injected into the arc-shaped edge of the polygonal washer, so that the utilization rate of the magnetic liquid can be improved, the magnetic liquid 52 is prevented from splashing in the vibration process of the vibration system, the contact area between the magnetic liquid 52 and the coil 6 can be increased, and the washer 5 and the coil 6 are better prevented from being rubbed and collided.
To further explain how to prevent noise from being generated by collision between the washer and the lower case, fig. 3-1 to 5-3 exemplarily show the structure of the washer from various shapes and angles, respectively. In particular, fig. 3-1 shows a planar structure of a quadrangular washer according to an embodiment of the present invention; 3-2 illustrate a three-dimensional structure of a quadrilateral washer according to an embodiment of the present invention; 3-3 illustrate a cross-sectional structure of a quadrilateral washer according to an embodiment of the present invention; fig. 4-1 shows a planar structure of a circular washer according to an embodiment of the present invention; fig. 4-2 shows a three-dimensional structure of a circular washer according to an embodiment of the present invention; 4-3 illustrate a cross-sectional structure of a circular washer according to an embodiment of the present invention; fig. 5-1 shows a planar structure of a triangular washer according to an embodiment of the present invention; fig. 5-2 shows a three-dimensional structure of a triangular washer according to an embodiment of the present invention; fig. 5-3 show a cross-sectional structure of a triangular washer according to an embodiment of the present invention.
In the embodiment shown in fig. 3-1 to 3-3, when the washer 5 is a quadrangular washer, a central through hole 51 is formed in the middle of the washer 5, four corners are chamfers, and the side lines of the chamfers are arc side lines; when the washer of the linear vibration motor is a quadrangular washer, the magnetic fluid is injected into the central through hole 51 and on the side line of the circular arc. The magnetic liquid is arranged in the central through hole 51, so that the generation of collision noise between the washer and the lower shell can be prevented, and the waste of vibration space under the linear vibration motor can be effectively avoided; set up the magnetic fluid on convex sideline, can increase the area of contact between magnetic fluid and the coil, better prevent to wipe and bump between china department and the coil, can also improve the utilization efficiency of magnetic fluid, avoid splashing of magnetic fluid at linear vibration motor in vibration process.
In the embodiment shown collectively in fig. 4-1 to 4-3, the washer 5 is a circular washer, wherein a central through hole 51 is provided in the middle of the washer 5; when the washer of the linear vibration motor is a circular washer, the magnetic fluid is injected into the central through hole 51 and on the side line of the circular arc. The magnetic liquid is arranged in the central through hole 51, so that the generation of collision noise of the washer and the lower shell can be prevented, and the waste of vibration space under the linear vibration motor can be effectively avoided; the magnetic liquid is arranged on the round edge of the washer, so that the utilization efficiency of the magnetic liquid can be improved, and the magnetic liquid is prevented from splashing in the vibration process of the linear vibration motor; meanwhile, the contact area between the magnetic liquid and the coil can be increased due to the shape of the circular washer, and the washer is prevented from being rubbed and collided with the coil better.
In the embodiment shown in fig. 5-1 to 5-3, the washer 5 is a trilateral washer, wherein a central through hole 51 is formed in the middle of the washer 5, three corners are chamfers, and the side lines of the chamfers are arc-shaped side lines; when the washer of the linear vibration motor is a trilateral washer, the magnetic fluid is injected into the central through hole 51 and on the three circular arc-shaped side lines. The magnetic liquid is arranged in the central through hole 51, so that the generation of collision noise between the washer and the lower shell can be prevented, and the waste of vibration space under the linear vibration motor can be effectively avoided; set up the magnetic fluid on convex edge, not only can increase the area of contact between magnetic fluid and the coil, better prevent to wipe between china department and the coil and bump and produce the noise, can also improve the utilization efficiency of magnetic fluid to avoid splashing of magnetic fluid at linear vibrating motor at the vibration in-process, improve the performance and the life of product.
Synthesize the embodiment of fig. 3-1 to 5-3, can set as required the utility model provides a linear vibration motor's china department 5 sets for arbitrary polygon, not only for quadrangle, circular and triangle-shaped of above-mentioned explanation, is not restricted to the china department shape of above example, and china department of other shapes that have central through-hole is all in the protection scope of the utility model.
According to the embodiment, the linear vibration motor provided by the utility model has the advantages that the central through hole is arranged in the middle of the washer, and the magnetic liquid is injected, so that the noise generated by collision between the washer and the lower shell is prevented, the vibration space of the linear vibration motor is increased, and the waste of the vibration space is avoided; the magnetic liquid is injected into each circular arc edge of the washer, so that the contact area between the magnetic liquid and the coil can be increased, the washer can be better prevented from being rubbed and collided with the coil, the utilization efficiency of the magnetic liquid can be improved, and the magnetic liquid can be prevented from splashing in the vibration process of the linear vibration motor.
The linear vibration motor according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the linear vibration motor of the present invention without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (10)
1. A linear vibration motor comprises a shell and a vibration system contained in the shell, wherein the vibration system comprises a basin frame, a permanent magnet contained in the basin frame and a washer attached to one side, far away from the basin frame, of the permanent magnet; it is characterized in that the preparation method is characterized in that,
the washer is provided with a central groove, and magnetic liquid is arranged in the central groove.
2. The linear vibration motor of claim 1,
the central groove is a central through hole, and the magnetic liquid is arranged in the central through hole.
3. The linear vibration motor of claim 1,
the washer is polygonal or circular; wherein,
when the washer is polygonal, each corner of the washer is a chamfer, the sideline of the chamfer is an arc sideline, and magnetic liquid is arranged on the arc sideline.
4. The linear vibration motor of claim 1,
when the washer is a quadrilateral washer, four corners of the quadrilateral washer are chamfers, sidelines of the chamfers are arc sidelines, and magnetic liquid is arranged on the arc sidelines.
5. The linear vibration motor of claim 1,
When the washer is a trilateral washer, three corners of the trilateral washer are chamfers, the side lines of the chamfers are arc-shaped side lines, and magnetic liquid is arranged on the arc-shaped side lines.
6. The linear vibration motor of claim 1,
the vibration system also comprises a mass block sleeved and fixed on the outer side of the basin frame; wherein,
the mass block is of a circular ring-shaped structure, and the inner side of the mass block is fixedly connected with the side wall of the basin frame in a gluing mode.
7. The linear vibration motor of claim 6,
the vibration system is supported and suspended in the shell through an elastic sheet; wherein,
the elastic sheet is a conical sheet type spring and comprises a fixed end connected with the shell, a fixed disc connected with the vibration system and an elastic connecting arm positioned between the fixed end and the fixed disc.
8. The linear vibration motor of claim 7,
the fixed disk of the elastic sheet is fixedly connected with the mass block, and the fixed end of the elastic sheet is fixedly connected with the lower shell of the shell.
9. The linear vibration motor of claim 7,
The elastic sheet is provided with an elastic deformation space along the vertical direction, and the vibration system vibrates along the vertical direction under the support of the elastic sheet.
10. The linear vibration motor of claim 1,
the stator system is accommodated in the shell; wherein,
the stator system includes a coil and a FPCB;
one end of the coil is suspended in a magnetic gap formed between the side wall of the basin stand and the permanent magnet, and the other end of the coil is fixedly conducted with the FPCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620512990.1U CN205753918U (en) | 2016-05-30 | 2016-05-30 | Linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620512990.1U CN205753918U (en) | 2016-05-30 | 2016-05-30 | Linear vibration motor |
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| Publication Number | Publication Date |
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| CN205753918U true CN205753918U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620512990.1U Active CN205753918U (en) | 2016-05-30 | 2016-05-30 | Linear vibration motor |
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| Country | Link |
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| CN (1) | CN205753918U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877618A (en) * | 2017-03-28 | 2017-06-20 | 歌尔股份有限公司 | Linear vibration motor and electronic equipment |
| CN108777529A (en) * | 2018-07-27 | 2018-11-09 | 深圳市南硕明泰科技有限公司 | A kind of transmission of scroll spring is fastenedly connected the cell phone vibrator with heat sinking function |
| WO2019029047A1 (en) * | 2017-08-11 | 2019-02-14 | 歌尔股份有限公司 | Linear vibration motor |
| WO2019029055A1 (en) * | 2017-08-11 | 2019-02-14 | 歌尔股份有限公司 | Linear vibration motor |
-
2016
- 2016-05-30 CN CN201620512990.1U patent/CN205753918U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877618A (en) * | 2017-03-28 | 2017-06-20 | 歌尔股份有限公司 | Linear vibration motor and electronic equipment |
| WO2019029047A1 (en) * | 2017-08-11 | 2019-02-14 | 歌尔股份有限公司 | Linear vibration motor |
| WO2019029055A1 (en) * | 2017-08-11 | 2019-02-14 | 歌尔股份有限公司 | Linear vibration motor |
| CN108777529A (en) * | 2018-07-27 | 2018-11-09 | 深圳市南硕明泰科技有限公司 | A kind of transmission of scroll spring is fastenedly connected the cell phone vibrator with heat sinking function |
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