CN117411269B - Vibration motor - Google Patents
Vibration motor Download PDFInfo
- Publication number
- CN117411269B CN117411269B CN202311728141.0A CN202311728141A CN117411269B CN 117411269 B CN117411269 B CN 117411269B CN 202311728141 A CN202311728141 A CN 202311728141A CN 117411269 B CN117411269 B CN 117411269B
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- China
- Prior art keywords
- unit
- vibration
- driving unit
- vibration motor
- cantilever
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- 230000005489 elastic deformation Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 230000003993 interaction Effects 0.000 claims description 3
- 230000010287 polarization Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The vibrating motor comprises an outer frame which is hollow and provided with a cavity, a vibrating unit which is accommodated in the cavity and a driving unit which drives the vibrating unit to vibrate in a reciprocating manner, wherein the vibrating unit is suspended in the cavity through a clamping piece. And one side of the external frame corresponding to the driving unit is provided with a cantilever, the cantilever elastically bears the driving unit, and the direction of elastic deformation of the cantilever is orthogonal to the direction of elastic deformation of the clamping piece, so as to inhibit redundant polarization generated in the working process of the vibration motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a vibration motor.
Background
Along with the development of science and technology and the progress of society, portable electronic products such as mobile phones, palm game machines, navigation devices or palm multimedia entertainment devices are widely applied in daily life of people, and in some application scenes of the electronic products, such as incoming call prompts, information prompts, navigation prompts, vibration feedback of game machines and the like of the mobile phones are generally realized through vibration motors.
The related art vibration motor includes a vibration unit and a driving unit, the driving unit being stationary, and a vibration sensation being generated by lateral vibration of the vibration unit. Typically, the vibration unit is held by the elastic member and an elastic restoring force is provided by the elastic member, eventually generating a reciprocating motion. In the actual working process, the elastic element is assembled asymmetrically or the structure of the elastic element is different, or the mass of the vibration unit is unbalanced, so that the vibration direction of the vibration unit is not the straight line direction, but the deflection in other directions can be generated, and the deflection belongs to redundant vibration, so that noise can be caused, and even the vibration effect is inconsistent with the preset vibration effect.
Accordingly, there is a need to provide a product that solves the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a vibrating motor, which is used for eliminating the polarization phenomenon of a vibrating unit in the vibrating process and improving the stability and reliability of the vibrating motor.
In order to achieve the above object, there is provided in an embodiment of the present invention a vibration motor including an outer frame which is hollow and forms a cavity; the vibration unit is arranged in the cavity; the driving unit is arranged in the cavity and is used for driving the vibration unit to vibrate; a clip suspending the vibration unit in the cavity; the outer frame is provided with a plurality of grooves corresponding to the side surface of the driving unit to form a cantilever with an end part connected with the side surface, the driving unit is arranged close to the side surface and is elastically connected with the outer frame through the cantilever, and the elastic deformation direction of the cantilever is orthogonal to the elastic deformation direction of the clamping piece.
Preferably, the clamping pieces are arranged at two sides of the vibration unit, one end of each clamping piece is fixed with the external frame, and the other end of each clamping piece is fixed with the vibration unit.
Preferably, the side surface is provided with two cantilevers with opposite free ends, and the drive unit is connected to both cantilevers at the same time.
Preferably, the driving unit includes a magnetic conductive structure and a coil wound around the magnetic conductive structure.
Preferably, the driving unit includes a magnetic conductive structure and a coil wound around the magnetic conductive structure, where the magnetic conductive structure includes two first portions disposed opposite to each other and a second portion connected to the two first portions, the coil is wound around the second portion, and the two first portions are fixed to the two cantilevers respectively.
Preferably, the vibration unit is provided with a mass block and magnetic steel fixedly connected with the mass block, a magnetic conduction plate is further arranged between the magnetic steel and the mass block, the driving unit is at least partially surrounded by the mass block, and a gap is arranged between the part, surrounded by the mass block, of the driving unit and the magnetic steel.
Preferably, the outer frame is further provided with a limiting block for limiting the vibration unit and a circuit board for feeding the driving unit.
The invention also provides a vibrating motor, which comprises an outer frame, a vibrating unit and a driving unit, wherein the vibrating unit and the driving unit are enclosed in the outer frame, the vibrating unit comprises a mass block, the driving unit is used for driving the vibrating unit to vibrate in a reciprocating mode, one of the vibrating unit and the driving unit is provided with a coil, the other of the vibrating unit and the driving unit is provided with magnetic steel which is in electromagnetic interaction with the coil, the outer frame is provided with a side face, at least part of the driving unit is positioned between the vibrating unit and the side face along the direction perpendicular to the reciprocating motion direction of the vibrating unit, a cantilever with one end connected to the side face and the other end free is arranged on the side face corresponding to the driving unit, one end of the driving unit close to the side face is elastically connected to the cantilever, and the elastic deformation direction of the cantilever is consistent with the connecting line of the vibrating unit, the driving unit and the side face.
Preferably, the vibration motor further includes a clip that elastically suspends the vibration unit in the outer frame, and an elastic deformation direction of the clip is identical to a reciprocating direction of the vibration unit.
Preferably, the vibration motor has two opposite cantilevers, the side surface is provided with a slot, the two cantilevers are placed in the slot, and the free ends of the two cantilevers are arranged opposite to each other.
Preferably, the vibration unit includes a magnetic steel fixedly connected with the mass block, the driving unit includes a magnetic conductive structure and a coil wound around the magnetic conductive structure, the driving unit is at least partially surrounded by the mass block, and a gap is formed between a portion of the driving unit surrounded by the mass block and the magnetic steel.
Preferably, the driving unit includes a magnetic conductive structure and a coil wound around the magnetic conductive structure, where the magnetic conductive structure includes two first portions disposed opposite to each other and a second portion connected to the two first portions, the coil is wound around the second portion, and the two first portions are fixed to the two cantilevers respectively.
The novel vibrating motor comprises an external frame with a cavity, a vibrating unit accommodated in the cavity and a driving unit driving the vibrating unit to reciprocate, wherein the vibrating unit is suspended in the cavity through a clamping piece; the driving unit is fixed with the outer frame through a cantilever. In the structure, the driving unit is elastically fixed on the external frame, and when the vibration unit generates redundant vibration in other directions, the driving unit can generate reverse vibration with the same frequency as the redundant vibration of the vibration unit, so that the vibration quantity of the vibration motor in the ideal direction is not influenced, the redundant vibration quantity in other directions is reduced, the vibration reduction effect on other directions is achieved, the polarization phenomenon is eliminated, and the stability of the vibration motor is improved.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it will be obvious that the drawings in the description below are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person having ordinary skill in the art of the present invention, wherein:
fig. 1 is a perspective view of a vibration motor of the present invention;
FIG. 2 is a partially exploded perspective view of a vibration motor according to the present invention;
fig. 3 is a schematic perspective view of a side surface of a driving unit corresponding to an outer frame of the vibration motor according to the present invention;
FIG. 4 is a schematic perspective view of a magnetic conductive structure of a vibration motor of the present invention fixedly connected to two cantilevers;
FIG. 5 is a cross-sectional view of the vibration motor of the present invention taken along line A-A of FIG. 1;
the reference numerals in the drawings are as follows:
100. a vibration motor;
1. an outer frame; 11. a side surface; 11a, cantilever;
2. a vibration unit; 21. A clamping piece; 22. a mass block; 23. magnetic steel; 24. a magnetic conductive plate; 25. a damping member;
3. a driving unit; 31. a magnetic conduction structure; 31a, a first portion; 31b, a second part; 32. a coil;
4. a circuit board;
5. and a limiting block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1-5, the present invention provides a vibration motor 100, which includes an outer frame 1 hollow and forming a cavity, and a vibration unit 2 and a driving unit 3 accommodated in the cavity.
The vibration unit 2 is suspended in the cavity through the clamping piece 21, a plurality of grooves are formed in the side face 11 of the outer frame 1 corresponding to the driving unit 3 to form a cantilever 11a with an end connected to the side face 11, the driving unit 3 is arranged close to the side face 11, the driving unit 3 is elastically connected with the outer frame 1 through the cantilever 11a, and the elastic deformation direction of the cantilever 11a is orthogonal to the elastic deformation direction of the clamping piece 21.
As shown in fig. 3 and 4, in the present embodiment, the side 11 is provided with two cantilevers 11a with opposite free ends, and the driving unit 3 is connected to the two cantilevers 11a at the same time, it should be noted that in other embodiments, the number of cantilevers 11a is not limited to two, but may be one, three, or more; as shown in fig. 3, the cantilever 11a is shaped as a square strip formed by cutting a part of the side surface 11, and three edges of the square strip are separated from the outer frame 1, however, in other embodiments, the cantilever 11a may be shaped as well.
The vibration unit 2 comprises a mass block 22 with a through middle part and magnetic steel 23 fixedly connected with the mass block 22, and a magnetic conduction plate 24 is arranged between the magnetic steel 23 and the mass block 22 for concentrating a magnetic field; the clamping pieces 21 are arranged on two sides of the vibration unit 2 along the vibration direction of the vibration unit 2, one end of each clamping piece 21 is fixed with the external frame 1, the other end of each clamping piece is fixed with the corresponding mass block 22, the damping piece 25 can be clamped between each clamping piece 21 and the corresponding mass block 22, and the vibration unit 2 can move more softly and stably due to the damping piece 25 in the reciprocating motion process of the vibration unit 2.
The driving unit 3 is used for driving the vibration unit 2 to vibrate, the driving unit 3 is at least partially surrounded by the mass block 22, and a gap is arranged between the part of the driving unit 3 surrounded by the mass block 22 and the magnetic steel 23; specifically, the driving unit 3 includes a magnetically conductive structure 31 and a coil 32 wound around the magnetically conductive structure 31, as shown in fig. 5, the magnetically conductive structure 31 has an "i" shape in a cross-sectional view along a line A-A in fig. 1, and includes two first portions 31a disposed opposite to each other and a second portion 31b connected to the two first portions 31a, and the coil 32 is wound around the second portion 31b. The driving unit 3 is elastically connected to the outer frame 1 through the cantilevers 11a, and as shown in fig. 4, two first portions 31a of the magnetically permeable structure 31 are respectively fixed to free ends of the two cantilevers 11 a.
The vibration motor 100 further includes a circuit board 4 feeding the driving unit 3 and a stopper 5 fixed to the outer frame 1, the stopper 5 restricting displacement of the vibration unit 2.
Further, the present invention provides another vibration motor, which specifically includes an outer frame 1, and a vibration unit 2 and a driving unit 3 enclosed therein by the outer frame 1.
The outer frame 1 has a side 11, along the direction perpendicular to the reciprocating motion of the vibration unit 2, the driving unit 3 is at least partially located between the vibration unit 2 and the side 11, a cantilever 11a with one end connected to the other end of the side 11 and free is arranged on the side 11 corresponding to the driving unit 3, one end of the driving unit 3 close to the side 11 is elastically connected to the cantilever 11a, and the elastic deformation direction of the cantilever 11a is consistent with the connection line of the vibration unit 2, the driving unit 3 and the side 11.
As shown in the present embodiment, the cantilever 11a is provided so as to be grooved on the side surface 11, and in other embodiments, the cantilever 11a is not limited to this and may be provided in other manners.
The vibration unit 2 comprises a mass block 22, the driving unit 3 is used for driving the vibration unit 2 to vibrate in a reciprocating mode, one of the vibration unit 2 and the driving unit 3 is provided with a coil 32, and the other is provided with magnetic steel 23 which is in electromagnetic interaction with the coil 32.
It should be noted that, in the present embodiment, the vibration unit 2 is provided with the magnetic steel 23, and the driving unit 3 includes the coil 32, it is understood that, in other embodiments, the opposite may be true: the vibration unit 2 comprises a coil 32 and the drive unit 3 comprises a magnetic steel 23.
The vibration unit 2 is elastically suspended in the outer frame 1 by the clip 21, and the direction in which the clip 21 elastically deforms coincides with the reciprocating direction of the vibration unit 2.
The driving unit 3 is configured to drive the vibration unit 2 to reciprocate, and the driving unit 3 is at least partially located between the vibration unit 2 and the side 11 along a direction perpendicular to the reciprocation direction of the vibration unit 2, where in this embodiment, the driving unit 3 is at least partially surrounded by the mass 22, and a gap is formed between a portion of the driving unit surrounded by the mass 22 and the magnetic steel 23, and in other embodiments, the driving unit 3 and the mass 22 may be disposed in other positional relationships.
Compared with the prior art, the driving unit 3 is elastically fixed on the external frame 1, when the vibration unit 2 generates redundant vibration in other directions, the driving unit 3 can generate reverse vibration with the same frequency as the redundant vibration of the vibration unit 2, so that the vibration quantity of the vibration motor in the ideal direction is not influenced, the redundant vibration quantity in other directions is reduced, the vibration absorption effect on other directions is achieved, the polarization phenomenon is eliminated, and the stability of the vibration motor is improved.
While the invention has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the invention.
Claims (12)
1. A vibration motor, comprising:
an outer frame, the outer frame being hollow and forming a cavity;
the vibration unit is arranged in the cavity;
the driving unit is arranged in the cavity and is used for driving the vibration unit to vibrate;
a clip suspending the vibration unit in the cavity; it is characterized in that the method comprises the steps of,
the outer frame is provided with a plurality of grooves corresponding to the side surface of the driving unit to form a cantilever with an end part connected with the side surface, the driving unit is arranged close to the side surface and is elastically connected with the outer frame through the cantilever, and the elastic deformation direction of the cantilever is orthogonal to the elastic deformation direction of the clamping piece.
2. The vibration motor of claim 1, wherein: the clamping pieces are arranged on two sides of the vibration unit, one end of each clamping piece is fixed with the external frame, and the other end of each clamping piece is fixed with the vibration unit.
3. The vibration motor of claim 1, wherein: the side surface is provided with two cantilevers with opposite free ends, and the drive unit is connected to both cantilevers at the same time.
4. The vibration motor of claim 1, wherein: the driving unit comprises a magnetic conduction structure and a coil wound on the magnetic conduction structure.
5. A vibration motor according to claim 3, wherein: the driving unit comprises a magnetic conduction structure and a coil wound on the magnetic conduction structure, the magnetic conduction structure comprises two first parts which are oppositely arranged and a second part which is connected with the two first parts, the coil is wound on the second part, and the two first parts are respectively fixed on the two cantilevers.
6. The vibration motor according to claim 4 or 5, characterized in that: the vibration unit is provided with a mass block and magnetic steel fixedly connected with the mass block, a magnetic conduction plate is further arranged between the magnetic steel and the mass block, the driving unit is at least partially surrounded by the mass block, and a gap is arranged between the part, surrounded by the mass block, of the driving unit and the magnetic steel.
7. The vibration motor of claim 6, wherein: the outer frame is further provided with a limiting block for limiting the vibration unit and a circuit board for feeding the driving unit.
8. The utility model provides a vibrating motor, its includes the external frame and by the external frame encloses vibrating unit and the drive unit that locates wherein, vibrating unit includes the mass block, the drive unit is used for driving vibrating unit reciprocal vibration, vibrating unit with one of them is equipped with the coil, another be equipped with the magnet steel of coil electromagnetic interaction, the external frame has a side, along the direction perpendicular to vibrating unit reciprocal motion, the drive unit is at least partly located between vibrating unit with the side, its characterized in that: the position on the side corresponding to the driving unit is provided with a cantilever, one end of the cantilever is connected to the other end of the side, one end of the driving unit, which is close to the side, is elastically connected to the cantilever, and the elastic deformation direction of the cantilever is consistent with the connecting lines of the vibration unit, the driving unit and the side.
9. The vibration motor of claim 8, wherein: the vibration motor further comprises a clamping piece, the clamping piece elastically suspends the vibration unit in the outer frame, and the elastic deformation direction of the clamping piece is consistent with the reciprocating motion direction of the vibration unit.
10. The vibration motor of claim 8, wherein: the vibration motor is provided with two opposite cantilevers, a slot is formed in the side face of the vibration motor, the two cantilevers are arranged in the slot, and free ends of the two cantilevers are arranged oppositely.
11. The vibration motor of claim 8, wherein: the vibration unit comprises magnetic steel fixedly connected with the mass block, the driving unit comprises a magnetic conduction structure and a coil wound on the magnetic conduction structure, the driving unit is at least partially surrounded by the mass block, and a gap is reserved between the portion, surrounded by the mass block, of the driving unit and the magnetic steel.
12. The vibration motor of claim 10, wherein: the driving unit comprises a magnetic conduction structure and a coil wound on the magnetic conduction structure, the magnetic conduction structure comprises two first parts which are oppositely arranged and a second part which is connected with the two first parts, the coil is wound on the second part, and the two first parts are respectively fixed on the two cantilevers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311728141.0A CN117411269B (en) | 2023-12-15 | 2023-12-15 | Vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311728141.0A CN117411269B (en) | 2023-12-15 | 2023-12-15 | Vibration motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117411269A CN117411269A (en) | 2024-01-16 |
| CN117411269B true CN117411269B (en) | 2024-03-01 |
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ID=89487489
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311728141.0A Active CN117411269B (en) | 2023-12-15 | 2023-12-15 | Vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117411269B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846638A (en) * | 2016-05-25 | 2016-08-10 | 歌尔声学股份有限公司 | Linear vibration motor |
| CN106130304A (en) * | 2016-08-22 | 2016-11-16 | 歌尔股份有限公司 | Extensional vibration motor |
| CN106300865A (en) * | 2016-08-24 | 2017-01-04 | 歌尔股份有限公司 | Linear vibration motor |
| CN106655691A (en) * | 2016-11-24 | 2017-05-10 | 歌尔股份有限公司 | Linear vibration motor |
| CN218976534U (en) * | 2023-01-05 | 2023-05-05 | 瑞声光电科技(常州)有限公司 | Vibration motor |
-
2023
- 2023-12-15 CN CN202311728141.0A patent/CN117411269B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846638A (en) * | 2016-05-25 | 2016-08-10 | 歌尔声学股份有限公司 | Linear vibration motor |
| CN106130304A (en) * | 2016-08-22 | 2016-11-16 | 歌尔股份有限公司 | Extensional vibration motor |
| CN106300865A (en) * | 2016-08-24 | 2017-01-04 | 歌尔股份有限公司 | Linear vibration motor |
| CN106655691A (en) * | 2016-11-24 | 2017-05-10 | 歌尔股份有限公司 | Linear vibration motor |
| CN218976534U (en) * | 2023-01-05 | 2023-05-05 | 瑞声光电科技(常州)有限公司 | Vibration motor |
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| Publication number | Publication date |
|---|---|
| CN117411269A (en) | 2024-01-16 |
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