CN219802140U - Linear vibration motor - Google Patents
Linear vibration motor Download PDFInfo
- Publication number
- CN219802140U CN219802140U CN202321325631.1U CN202321325631U CN219802140U CN 219802140 U CN219802140 U CN 219802140U CN 202321325631 U CN202321325631 U CN 202321325631U CN 219802140 U CN219802140 U CN 219802140U
- Authority
- CN
- China
- Prior art keywords
- magnetic steel
- vibration motor
- linear vibration
- magnetic
- fixed
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 76
- 239000010959 steel Substances 0.000 claims abstract description 76
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003292 glue Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract 1
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The utility model provides a linear vibration motor which comprises a shell, a vibration assembly, a stator assembly and an elastic piece, wherein the shell is provided with an accommodating space, the vibration assembly and the stator assembly are accommodated in the accommodating space, the elastic piece supports the vibration assembly in the accommodating space, the vibration assembly comprises a mass block which is suspended in the accommodating space, an accommodating hole penetrating through the mass block is formed in the mass block, the vibration assembly further comprises an iron core which is fixed on the mass block and accommodated in the accommodating hole, and a coil wound on the iron core, the stator assembly comprises magnetic steel which is fixed on the shell, and the magnetic steel extends into the accommodating hole and is arranged at intervals opposite to the coil and the mass block. By fixing the first welding part to the first side yoke, the magnetic field performance of the linear vibration motor is effectively improved. The linear vibration motor provided by the utility model has high driving force and good vibration performance.
Description
[ field of technology ]
The present utility model relates to the field of motors, and more particularly, to a linear vibration motor for a portable mobile terminal.
[ background Art ]
With the development of electronic technology, portable electronic products such as mobile phones and palm game machines are increasingly being pursued, and linear vibration motors are generally used for providing vibration feedback.
The related art linear vibration motor includes a housing having an accommodating space, a vibration assembly located in the accommodating space, a stator assembly fixed to the housing, and an elastic member supporting the vibration assembly; the stator assembly generally includes a solenoid composed of a coil and a core, and the vibration assembly includes a mass and a magnetic steel fixed to the mass, and the solenoid interacts with the magnetic steel to generate driving force to drive the vibration assembly to reciprocate, thereby providing a vibration sense. However, the driving forces of the solenoid and the magnetic steel of the linear vibration motor in the related art are not fully exerted, so that the vibration feedback of the linear vibration motor is not optimal.
Therefore, it is necessary to provide a new linear vibration motor to solve the above technical problems.
[ utility model ]
The present utility model provides a linear vibration motor with high driving force and better vibration performance.
In order to achieve the above object, the present utility model provides a linear vibration motor, which comprises a housing having an accommodating space, a vibration assembly and a stator assembly accommodated in the accommodating space, and an elastic member supporting the vibration assembly in the accommodating space, wherein the vibration assembly comprises a mass block suspended in the accommodating space, the mass block is provided with an accommodating hole penetrating through the mass block, the vibration assembly further comprises an iron core fixed to the mass block and accommodated in the accommodating hole, and a coil wound around the iron core, and the stator assembly comprises a magnetic steel fixed to the housing, and the magnetic steel extends into the accommodating hole and is arranged at a distance from the coil and the mass block.
Preferably, the mass block comprises a side wall surrounding the accommodating hole, and the end part of the iron core is fixed on the side wall.
Preferably, the mass block is rectangular, and the side walls comprise a first side wall extending along the long axis direction and oppositely arranged and a second side wall extending along the short axis direction and oppositely arranged.
Preferably, the magnetic steel comprises first magnetic steel arranged on two sides of the coil along a first direction and second magnetic steel arranged on two sides of the coil along a second direction, the first magnetic steel and the second magnetic steel are arranged on the periphery of the coil in a spacing ring mode, and the first direction and the second direction are perpendicular to the vibration direction of the vibration assembly in pairs.
Preferably, the first magnetic steel is magnetized along the first direction, and the two first magnetic steels are homopolar and opposite to each other along the first direction; the second magnetic steel is magnetized along the second direction, and the two second magnetic steels are oppositely arranged along the same pole along the second direction.
Preferably, the first magnetic steel and the second magnetic steel are of a three-section magnetizing structure.
Preferably, one side of the coil along the first direction is provided with three first magnetic steels which are sequentially arranged along the vibration direction, and the magnetizing direction of the first magnetic steel positioned at the middle position is opposite to the magnetizing direction of the first magnetic steel positioned at the two ends; the coil is provided with three second magnetic steels which are sequentially arranged along the vibration direction along one side of the second direction, and the magnetizing direction of the second magnetic steels positioned at the middle position is opposite to the magnetizing direction of the second magnetic steels positioned at the two ends.
Preferably, the mass further includes a fixing boss formed protruding from the second sidewall, and an end portion of the core is fixed to the fixing boss.
Preferably, the iron core comprises an end face fixed on the fixing boss, and the iron core is provided with a glue containing groove formed by recessing from the end face to a direction away from the fixing boss.
Preferably, the shell comprises an upper cover, a lower cover and side walls, wherein the upper cover and the lower cover are arranged at intervals relatively, the side walls are connected with the upper cover and the lower cover, the upper cover, the lower cover and the side walls are arranged together to form the accommodating space in a surrounding mode, one end of the elastic piece is fixed to the side walls, the other end of the elastic piece is fixed to the mass block, and the two second magnetic steels are respectively fixed to the upper cover and the lower cover.
Compared with the related art, the linear vibration motor provided by the utility model has the advantages that the iron core and the coil are fixed on the mass block to serve as the vibration assembly, the magnetic steel is fixed on the shell to serve as the stator assembly, the electromagnetic field utilization rate of the iron core and the coil is greatly improved, the magnetic field strength of the magnetic steel is improved, and the driving force of the linear vibration motor is obviously enhanced, so that the vibration performance of the linear vibration motor is improved.
[ description of the drawings ]
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a perspective view of a linear vibration motor according to an embodiment of the present utility model;
FIG. 2 is an exploded view of the linear vibration motor of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a partial structural perspective view of the linear vibration motor of FIG. 1;
FIG. 5 is a cross-sectional view taken along line B-B in FIG. 1;
fig. 6 is a partial structural perspective view of a linear vibration motor according to a second embodiment of the present utility model.
[ detailed description ] of the utility model
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in fig. 1 to 5, a first embodiment of the present utility model provides a linear vibration motor 100, which includes a housing 10 having a receiving space 11, a vibration assembly 20 and a stator assembly 30 received in the receiving space 11, and an elastic member 40 supporting the vibration assembly 20 in the receiving space 11. The elastic member 40 supports the vibration assembly 20 to vibrate reciprocally in a vibration direction to provide a vibration sense.
The housing 10 includes an upper cover 12, a lower cover 13, and a side wall 14 connecting the upper cover 12 and the lower cover 13, which are disposed at opposite intervals, and the upper cover 12, the lower cover 13, and the side wall 14 together enclose the accommodating space 11.
The vibration assembly 20 comprises a mass block 21 suspended in the accommodating space 11, an iron core 22 fixed on the mass block 21, and a coil 23 wound around the iron core 22; specifically, the mass 21 is provided with a receiving hole 211 penetrating therethrough, and the iron core 22 and the coil 23 are received in the receiving hole 211. One end of the elastic member 40 is fixed to the side wall 14, and the other end is fixed to the mass 21.
As shown in fig. 2-5, the stator assembly 30 includes a magnetic steel 31 fixed to the housing 10, and the magnetic steel 31 extends into the accommodating hole 211 and is disposed opposite to the coil 23 and the mass 21 at a distance.
The mass 21 includes a sidewall 212 surrounding the receiving hole 211, and an end of the core 22 is fixed to the sidewall 212. As can be seen in fig. 2, the mass 21 is rectangular, and thus, the side wall 212 includes a first side wall 2121 extending in the major axis direction and disposed opposite thereto, and a second side wall 2122 extending in the minor axis direction and disposed opposite thereto. Further, the magnetic steel 31 includes a first magnetic steel 311 disposed along a first direction on two sides of the coil 23 and a second magnetic steel 312 disposed along a second direction on two sides of the coil 23, where the first direction and the second direction are perpendicular to the vibration direction. The receiving hole 211 penetrates the mass 21 along the second direction. The first magnetic steel 311 is spaced from the first sidewall 2121.
It can be understood that the coil 23 is provided with one first magnetic steel 311 on each side along the first direction, and one second magnetic steel 312 on each side along the second direction; then, the first magnetic steel 311 and the second magnetic steel 312 are arranged on the circumference of the coil 23 in a spacing ring. In the present utility model, the first magnetic steel 311 is magnetized along the first direction, and the two first magnetic steels 311 are oppositely arranged along the first direction in the same pole; the second magnetic steel 312 is magnetized along the second direction, and the two second magnetic steels 312 are oppositely arranged along the same pole along the second direction. As can be seen from fig. 5, two second magnetic steels 312 are fixed to the upper cover 12 and the lower cover 13, respectively. In addition, in the present embodiment, one end of the first magnetic steel 311 in the second direction is fixed to the lower cover 13, and the other end is spaced from the upper cover 12; in other embodiments, the first magnetic steel 311 may also have one end fixed to the upper cover 12 and the other end spaced from the lower cover 13, and may be selected according to actual design requirements.
In this embodiment, three first magnetic steels 311 sequentially arranged along the vibration direction are disposed on one side of the coil 23 along the first direction, and the magnetizing direction of the first magnetic steel 311 located at the middle position is opposite to the magnetizing direction of the first magnetic steel 311 located at the two ends; the coil 23 is provided with three second magnetic steels 312 sequentially arranged along the vibration direction at one side along the second direction, and the magnetizing direction of the second magnetic steel 312 at the middle position is opposite to the magnetizing direction of the second magnetic steel 312 at the two ends.
As shown in fig. 6, the linear vibration motor in the second embodiment of the present utility model is different from the linear vibration motor in the first embodiment only in that the first magnetic steel 311 and the second magnetic steel 312 are all integrated magnetic steels, which have a three-section magnetizing structure. It can be understood that the first magnetic steel 311 includes three magnetizing regions (not shown) sequentially arranged along the vibration direction, wherein the magnetizing regions located at the middle position are opposite to the magnetizing regions located at the two ends; similarly, the second magnetic steel 312 includes three magnetizing regions (not shown) sequentially arranged along the vibration direction, wherein the magnetizing regions located at the middle position are opposite to the magnetizing regions located at the two ends.
In order to enhance the magnetic field performance of the magnetic steel 31, the stator assembly 30 further includes a first yoke 32 fixed to a side of the first magnetic steel 311 facing the first sidewall 2121, and the first yoke 32 is spaced from the first sidewall 2121.
The mass 21 further includes a fixing boss 213 formed protruding from the second sidewall 2122, and an end portion of the core 22 is fixed to the fixing boss 213. Further, the iron core 22 includes an end surface 221 fixed to the fixing boss 213, and a glue receiving groove 222 formed by recessing from the end surface 221 in a direction away from the fixing boss 213 is provided on the iron core 22. When the end surface 221 of the iron core 22 is fixed to the fixing boss 213 by glue, the glue containing groove 222 may contain part of the glue, so as to prevent glue overflow, improve the fixing strength between the iron core 22 and the mass block 21, and improve the vibration reliability of the linear vibration motor 100.
Compared with the related art, the linear vibration motor provided by the utility model has the advantages that the iron core and the coil are fixed on the mass block to serve as the vibration assembly, the magnetic steel is fixed on the shell to serve as the stator assembly, the electromagnetic field utilization rate of the iron core and the coil is greatly improved, the magnetic field strength of the magnetic steel is improved, and the driving force of the linear vibration motor is obviously enhanced, so that the vibration performance of the linear vibration motor is improved.
While the utility model 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 utility model.
Claims (10)
1. The linear vibration motor comprises a shell with an accommodating space, a vibration assembly and a stator assembly which are accommodated in the accommodating space, and an elastic piece for supporting the vibration assembly in the accommodating space, wherein the vibration assembly comprises a mass block which is suspended in the accommodating space, and an accommodating hole which penetrates through the mass block is formed in the mass block.
2. The linear vibration motor of claim 1, wherein the mass includes a sidewall surrounding the receiving hole, and an end of the core is fixed to the sidewall.
3. The linear vibration motor of claim 2, wherein the mass is rectangular, and the side walls include a first side wall extending in a major axis direction and disposed opposite thereto, and a second side wall extending in a minor axis direction and disposed opposite thereto.
4. The linear vibration motor of claim 3, wherein the magnetic steel comprises a first magnetic steel arranged on two sides of the coil along a first direction and a second magnetic steel arranged on two sides of the coil along a second direction, the first magnetic steel and the second magnetic steel are arranged on the periphery of the coil in a spacing ring, and the first direction and the second direction are perpendicular to the vibration direction of the vibration assembly.
5. The linear vibration motor of claim 4, wherein the first magnetic steel is magnetized in the first direction, and two of the first magnetic steels are disposed homopolar opposite to each other in the first direction; the second magnetic steel is magnetized along the second direction, and the two second magnetic steels are oppositely arranged along the same pole along the second direction.
6. The linear vibration motor of claim 5, wherein the first and second magnetic steels are each of a three-segment magnetizing structure.
7. The linear vibration motor according to claim 5, wherein one side of the coil in the first direction is provided with three first magnetic steels arranged in order in the vibration direction, and the magnetizing direction of the first magnetic steel positioned in the middle position is opposite to the magnetizing direction of the first magnetic steel positioned at both ends; the coil is provided with three second magnetic steels which are sequentially arranged along the vibration direction along one side of the second direction, and the magnetizing direction of the second magnetic steels positioned at the middle position is opposite to the magnetizing direction of the second magnetic steels positioned at the two ends.
8. A linear vibration motor according to claim 3, wherein the mass further comprises a fixing boss formed protruding from the second side wall, and an end portion of the core is fixed to the fixing boss.
9. The linear vibration motor of claim 8, wherein the iron core includes an end surface fixed to the fixing boss, and the iron core is provided with a glue receiving groove formed by recessing from the end surface in a direction away from the fixing boss.
10. The linear vibration motor according to claim 4, wherein the housing includes an upper cover and a lower cover disposed at opposite intervals, and a side wall connecting the upper cover and the lower cover, the upper cover, the lower cover, and the side wall are enclosed together to form the accommodating space, one end of the elastic member is fixed to the side wall, the other end is fixed to the mass block, and the two second magnetic steels are fixed to the upper cover and the lower cover, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325631.1U CN219802140U (en) | 2023-05-29 | 2023-05-29 | Linear vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321325631.1U CN219802140U (en) | 2023-05-29 | 2023-05-29 | Linear vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219802140U true CN219802140U (en) | 2023-10-03 |
Family
ID=88175998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321325631.1U Active CN219802140U (en) | 2023-05-29 | 2023-05-29 | Linear vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219802140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117439361A (en) * | 2023-12-19 | 2024-01-23 | 瑞声光电科技(常州)有限公司 | Vibration motor and touch equipment |
-
2023
- 2023-05-29 CN CN202321325631.1U patent/CN219802140U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117439361A (en) * | 2023-12-19 | 2024-01-23 | 瑞声光电科技(常州)有限公司 | Vibration motor and touch equipment |
| CN117439361B (en) * | 2023-12-19 | 2024-04-02 | 瑞声光电科技(常州)有限公司 | Vibration motor and touch equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11081950B2 (en) | Linear vibration motor | |
| US11482916B2 (en) | Linear motor | |
| US11245320B2 (en) | Linear vibration motor | |
| CN219802140U (en) | Linear vibration motor | |
| US11309782B2 (en) | Linear vibration motor | |
| WO2021035828A1 (en) | Linear motor with iron core embedded in coil | |
| CN219305016U (en) | Multifunctional sounding device | |
| US11316419B2 (en) | Linear vibration motor | |
| CN209313677U (en) | Linear vibration electric motor | |
| CN218997801U (en) | Vibration motor | |
| CN212850205U (en) | Vibration motor | |
| WO2022000643A1 (en) | Linear vibration electric motor | |
| CN215580858U (en) | Linear vibration motor | |
| CN114421730B (en) | Linear vibration motor | |
| US11831215B2 (en) | Linear vibration motor | |
| CN215580850U (en) | Linear vibration motor | |
| CN210093031U (en) | Vibration motor | |
| CN211530970U (en) | Linear vibration motor | |
| WO2021035825A1 (en) | Vertical linear motor having flange magnet yoke nested in coil | |
| CN215300452U (en) | Linear vibration motor | |
| CN217590568U (en) | Linear vibration motor | |
| CN215452757U (en) | Linear vibration motor | |
| US20240204639A1 (en) | Vibration motor | |
| CN215186386U (en) | Linear vibration motor | |
| WO2022267306A1 (en) | Linear vibrating motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |