Linear motors and electronics
By setting a laser detection module between the oscillator and the housing of the linear motor to detect and adjust the movement of the oscillator, the collision problem caused by excessive displacement of the oscillator is solved and the vibration performance of the oscillator is improved.
Patent Information
- Application Number
- CN202420608874.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-27
AI Technical Summary
In the related art, the oscillators of linear motors are prone to excessive displacement, resulting in collision between the oscillators and the shell.
At least two sets of laser detection modules are arranged between the vibrator and the housing, and the position of the vibrator is detected through the laser emitter and the laser receiver. When the vibrator blocks the laser, the laser receiver sends an interrupt signal to the control module. The control module adjusts the movement speed and direction of the vibrator according to the signal to avoid collision.
The collision between the vibrator and the shell is effectively avoided, and the vibration amount of the vibrator is fully utilized, thereby improving the vibration performance of the vibrator.
Smart Images
Figure CN222706386U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of motor technology, and in particular to a linear motor and an electronic device. Background Art
[0002] A linear motor is a transmission device that converts electrical energy directly into linear motion mechanical energy without the need for any intermediate conversion mechanism.
[0003] In the related art, the linear motor includes a housing, a vibrator, two elastic parts and a control module. The two elastic parts are respectively located on both sides of the vibrator, and the elastic parts are connected to the inner wall of the housing. The control module drives the vibrator to perform reciprocating motion.
[0004] However, the vibrator of the linear motor in the related art is prone to excessive displacement, which may cause the vibrator to collide with the housing. Utility Model Content
[0005] The present disclosure provides a linear motor and an electronic device, which can solve the technical problems existing in the related art. The technical solutions of the linear motor and the electronic device are as follows.
[0006] In a first aspect, the present disclosure provides a linear motor, the linear motor comprising a housing, a vibrator, two elastic members, at least two groups of laser detection modules and a control module;
[0007] The vibrator and the elastic member are located inside the housing, the two elastic members are located on both sides of the vibrator, and the vibrator and the elastic member are arranged along the moving direction of the vibrator;
[0008] The at least two groups of laser detection modules are located on both sides of the vibrator, and the laser detection modules and the vibrator are arranged along the movement direction of the vibrator, the laser detection module at least includes a laser transmitter and a laser receiver, and the optical path between the laser transmitter and the laser receiver is located between the initial position of the vibrator and the shell, wherein the initial position is the position of the vibrator when it is not driven;
[0009] The control module is electrically connected to the laser receiver and the vibrator. The control module is used to receive the signal emitted by the laser receiver and to control the movement direction and movement speed of the vibrator according to the signal emitted by the laser receiver.
[0010] In a possible implementation, the housing has a first through hole and a second through hole;
[0011] The laser transmitter and the laser receiver are located outside the housing, the first through hole is opposite to the laser transmitter, and the second through hole is opposite to the laser receiver.
[0012] In a possible implementation, the laser transmitter is located on the top side of the shell, and the laser receiver is located on the bottom side of the shell, wherein the bottom side of the shell is a side of the shell that contacts the vibrator.
[0013] In a possible implementation manner, two sides of the vibrator are provided with a plurality of groups of laser detection modules arranged at intervals.
[0014] In a possible implementation manner, the multiple groups of laser detection modules on the two sides are evenly distributed.
[0015] In a possible implementation, the number of the laser transmitters and the laser receivers is 6-10.
[0016] In a possible implementation, a group of the laser detection modules are respectively provided on both sides of the vibrator, and a distance D between the laser emitted by the laser detection module and the shell is 0.5 mm-0.8 mm.
[0017] In a possible implementation manner, the elastic member is a spring.
[0018] In a possible implementation, the control module includes a control unit and a drive module;
[0019] The control unit, the driving module and the vibrator are electrically connected in sequence, and the control unit is used to control the driving module to drive the vibrator to move;
[0020] The laser receiver is electrically connected to the control unit, and the control unit is used to determine the position of the vibrator according to the signal emitted by the laser receiver.
[0021] In a second aspect, the present disclosure provides an electronic device, comprising a linear motor as described in any one of the first aspects.
[0022] The technical solution provided by the present disclosure includes at least the following beneficial effects:
[0023] The present disclosure provides a linear motor, wherein a laser detection module is arranged between the vibrator and the housing, and is capable of detecting whether the vibrator moves to the laser receiver. When the vibrator blocks the laser, the laser receiver sends a laser interruption signal to the control module, so that the control module obtains the current position of the vibrator, and controls the movement speed and direction of the vibrator according to the current position of the vibrator, so as to avoid collision between the vibrator and the housing. In addition, the vibration amount of the vibrator can be fully utilized, and the vibration performance of the vibrator can be improved.
[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the description, are used to explain the principles of the present disclosure. In the drawings:
[0026] Figure 1 is a schematic structural diagram of a linear motor shown in an embodiment of the present disclosure;
[0027] Figure 2 is a schematic structural diagram of a linear motor shown in an embodiment of the present disclosure;
[0028] Figure 3 is a schematic structural diagram of a linear motor shown in an embodiment of the present disclosure;
[0029] Figure 4 is a schematic structural diagram of a linear motor sensor shown in an embodiment of the present disclosure;
[0030] Figure 5 It is a linear motor working flow chart shown in an embodiment of the present disclosure.
[0031] Legend:
[0032] 1. housing, 11. first through hole, 12. second through hole;
[0033] 2. Vibrator;
[0034] 3. Elastic parts;
[0035] 4. laser detection module, 41. laser transmitter, 42. laser receiver;
[0036] 5. Control module, 51. Control unit, 52. Drive module.
[0037] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0038] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.
[0039] The terms used in the embodiments of the present disclosure are only used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second", "third" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. Words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0040] The present disclosure provides a linear motor. Figure 1 As shown, the linear motor includes a housing 1, a vibrator 2, two elastic members 3, at least two groups of laser detection modules 4 and a control module 5. The vibrator 2 and the elastic member 3 are located inside the housing 1, the two elastic members 3 are located on both sides of the vibrator 2, and the vibrator 2 and the elastic member 3 are arranged along the movement direction of the vibrator 2. At least two groups of laser detection modules 4 are located on both sides of the vibrator 2, and the laser detection modules 4 and the vibrator 2 are arranged along the movement direction of the vibrator 2. The laser detection module 4 includes at least a laser emitter 41 and a laser receiver 42, and the optical path between the laser emitter 41 and the laser receiver 42 is located between the initial position of the vibrator 2 and the housing 1, wherein the initial position is the position of the vibrator 2 when it is not driven. The control module 5 is electrically connected to the laser receiver 42 and the vibrator 2, and the control module 5 is used to receive the signal emitted by the laser receiver 42, and to control the movement direction and movement speed of the vibrator 2 according to the signal emitted by the laser receiver 42.
[0041] The vibrator 2 includes a mass, a magnet and a coil. The control module 5 energizes the coil so that the coil generates a magnetic field and interacts with the magnet to drive the mass to move. The control module 5 controls the movement speed and direction of the vibrator 2 by controlling the magnitude and direction of the current in the coil.
[0042] The position of the optical path between the laser transmitter 41 and the laser receiver 42 may be opposite to the position of the maximum displacement of the vibrator 2. When the vibrator 2 is at the maximum displacement, the laser emitted by the laser transmitter 41 is blocked, and the laser receiver 42 cannot receive the laser. The laser receiver 42 sends a laser interruption signal to the control module 5.
[0043] The technical solution provided by the embodiment of the present disclosure is that a laser detection module 4 is arranged between the vibrator 2 and the housing 1, which can detect whether the vibrator 2 moves to the laser receiver 42. When the vibrator 2 blocks the laser, the laser receiver 2 sends a laser interruption signal to the control module 5, so that the control module 5 obtains the current position of the vibrator 2, and controls the movement speed and direction of the vibrator 2 according to the current position of the vibrator 2, so as to avoid the collision between the vibrator 2 and the housing 1. In addition, the vibration amount of the vibrator 2 can be fully utilized to improve the vibration performance of the vibrator 2.
[0044] In some examples, such as Figure 2 As shown, the housing 1 has a first through hole 11 and a second through hole 12. The laser emitter 41 and the laser receiver 42 are located outside the housing 1, the first through hole 11 and the laser emitter 41 are opposite, and the second through hole 12 and the laser receiver 42 are opposite.
[0045] The laser emitter 41 and the laser receiver 42 are arranged outside the housing 1 to prevent the laser emitter 41 and the laser receiver 42 from hindering the movement of the vibrator 2. The first through hole 11 and the second through hole 12 enable the laser emitted by the laser emitter 41 to be smoothly directed to the laser receiver 42.
[0046] Of course, in other examples, the laser transmitter 41 and the laser receiver 42 may also be disposed inside the housing 1 without hindering the movement of the vibrator 2 , and the embodiments of the present disclosure do not specifically limit this.
[0047] In some examples, such as Figure 1 As shown, the laser transmitter 41 is located on the top side of the housing 1 , and the laser receiver 42 is located on the bottom side of the housing 1 , wherein the bottom side of the housing 1 is the side where the housing 1 contacts the vibrator 2 .
[0048] Of course, in other examples, the laser transmitter 41 and the laser receiver 42 may also be located at the front and rear sides of the housing 1, respectively, which is not specifically limited in the embodiments of the present disclosure.
[0049] In some examples, such as Figure 1 As shown, the linear motor includes two groups of laser detection modules 4, which are arranged symmetrically about the vibrator 2. The position where the optical path of the laser detection module 4 is located is the limit position of the vibrator 2, that is, the maximum displacement of the vibrator 2.
[0050] In some examples, such as Figure 3 As shown, there are multiple groups of laser detection modules 4 arranged at intervals between the vibrator 2 and the housing 1. The position where the optical path of the laser detection module 4 closest to the housing is located is the limit position of the vibrator 2. In this way, the different positions of the vibrator 2 can be determined according to the positions of the multiple groups of laser detection modules 4, so that the control module 5 can more accurately control the movement speed and direction of the vibrator 2. When there are enough laser detection modules 4, the real-time position of the vibrator 2 can be detected.
[0051] In some examples, the multiple groups of laser detection modules 4 are evenly distributed between the vibrator 2 and the housing 1 .
[0052] In some examples, when there are multiple groups of laser detection modules 4 arranged at intervals between the vibrator 2 and the housing 1, the number of laser detection modules 4 is 6-10. The purpose of setting the laser detection modules 4 is mainly to prevent the vibrator 2 from colliding with the housing 1, so there is no need to set too many laser detection modules 4. In this way, the collision between the vibrator 2 and the housing 1 can be avoided, and the cost of the linear motor can be avoided to be too high.
[0053] In some examples, such as Figure 1 As shown, there is a group of laser detection modules 4 between the elastic member 3 and the housing 1, and the distance D between the optical path of the laser detection module 4 and the housing 1 is 0.5mm-0.8mm. After the vibrator 2 crosses the optical path of the laser detection module 4, the laser receiver 42 will send a laser interruption signal to the control module 5, and then the control module 5 will control the vibrator 2 to stop moving or move in the opposite direction. Therefore, the closer the laser detection module 4 is to the side wall of the housing 1, the larger the movement space of the vibrator 2, and the higher the amplitude of the linear motor.
[0054] When there are multiple groups of laser detection modules 4 arranged at intervals between the vibrator 2 and the housing 1 , the distance between the optical path of the laser detection module 4 closest to the housing 1 and the housing 1 is 0.5 mm-0.8 mm.
[0055] In some examples, the elastic member 3 is a spring. The spring has a small diameter, so during the movement of the vibrator 2, the spring has a small effect on the reception of the laser, so that the control module 5 can accurately obtain the current position of the vibrator 2.
[0056] In some examples, such as Figure 4As shown, the control module 5 includes a control unit 51 and a driving module 52. The control unit 51, the driving module 52 and the vibrator 2 are electrically connected in sequence, and the control unit 51 is used to control the driving module 52 to drive the vibrator 2 to move. The laser receiver 42 is electrically connected to the control unit 51, and the control unit 51 is used to determine the position of the vibrator 2 according to the signal emitted by the laser receiver 42. When the laser receiver 42 cannot receive the laser, it sends a laser interruption signal to the control unit 51, and the control unit 51 controls the driving module 52 not to energize the coil of the vibrator 2, or to apply a reverse voltage to the coil of the vibrator 2. Among them, the control unit 51 can also be called MCU (Micro Control Unit).
[0057] Below, as Figure 5 As shown, taking a group of laser detection modules 4 between the vibrator 2 and the housing 1 as an example, the working process of the linear motor is exemplarily described;
[0058] First, the control module 5 drives the vibrator 2 of the linear motor to vibrate normally.
[0059] Then, it is determined whether the control unit 51 receives the laser interruption signal emitted by the laser receiver 42. If the control unit 51 does not receive the laser interruption signal, the vibrator 2 continues to vibrate normally. If the control unit 51 receives the laser interruption signal, the control unit 51 issues an instruction to the driving module 52 to stop driving.
[0060] Then, it is determined again whether the control unit 51 receives the laser interruption signal emitted by the laser receiver 42. If the control unit 51 does not receive the laser interruption signal, it indicates that the vibrator 2 has begun to move in the reverse direction, and the control module 5 drives the vibrator 2 of the linear motor to vibrate normally. If the control unit 51 receives the laser interruption signal, it indicates that the vibrator 2 is still at the limit position, and the control unit 51 issues an instruction to the drive module 52 to generate a reverse drive signal, so that the vibrator 2 moves in the reverse direction.
[0061] An embodiment of the present disclosure also provides an electronic device, which includes the above-mentioned linear motor.
[0062] The electronic device may be a mobile phone or a tablet computer.
[0063] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A linear motor, characterized in that: The linear motor comprises a housing (1), a vibrator (2), two elastic members (3), at least two groups of laser detection modules (4) and a control module (5); The vibrator (2) and the elastic member (3) are located inside the housing (1), the two elastic members (3) are respectively located on both sides of the vibrator (2), and the vibrator (2) and the elastic member (3) are arranged along the movement direction of the vibrator (2); The at least two groups of laser detection modules (4) are located on both sides of the vibrator (2), and the laser detection modules (4) and the vibrator (2) are arranged along the movement direction of the vibrator (2), the laser detection module (4) at least comprises a laser transmitter (41) and a laser receiver (42), and the optical path between the laser transmitter (41) and the laser receiver (42) is located between the initial position of the vibrator (2) and the housing (1), wherein the initial position is the position of the vibrator (2) when it is not driven; The control module (5) is electrically connected to the laser receiver (42) and the vibrator (2), and the control module (5) is used to receive the signal emitted by the laser receiver (42), and to control the movement direction and movement speed of the vibrator (2) according to the signal emitted by the laser receiver (42).
2. The linear motor according to claim 1, characterized in that: The housing (1) has a first through hole (11) and a second through hole (12); The laser transmitter (41) and the laser receiver (42) are located outside the housing (1); the first through hole (11) and the laser transmitter (41) are opposite to each other; and the second through hole (12) and the laser receiver (42) are opposite to each other.
3. The linear motor according to claim 1, characterized in that: The laser transmitter (41) is located on the top side of the shell (1), and the laser receiver (42) is located on the bottom side of the shell (1), wherein the bottom side of the shell (1) is the side of the shell (1) in contact with the vibrator (2).
4. The linear motor according to claim 1, characterized in that: Both sides of the vibrator (2) are respectively provided with a plurality of groups of laser detection modules (4) arranged at intervals.
5. The linear motor according to claim 4, characterized in that: The multiple groups of laser detection modules (4) on both sides of the vibrator (2) are evenly distributed.
6. The linear motor according to claim 4, characterized in that: The number of the laser detection modules (4) is 6-10.
7. The linear motor according to claim 1, characterized in that: A group of laser detection modules (4) are respectively provided on both sides of the vibrator (2), and the distance D between the optical path of the laser detection module (4) and the housing (1) is 0.5 mm-0.8 mm.
8. The linear motor according to any one of claims 1 to 7, characterized in that: The elastic member (3) is a spring.
9. The linear motor according to any one of claims 1 to 7, characterized in that: The control module (5) comprises a control unit (51) and a drive module (52); The control unit (51), the driving module (52) and the vibrator (2) are electrically connected in sequence, and the control unit (51) is used to control the driving module (52) to drive the vibrator (2) to move; The laser receiver (42) is electrically connected to the control unit (51), and the control unit (51) is used to determine the position of the vibrator (2) according to the signal emitted by the laser receiver (42).
10. An electronic device, characterized in that: The electronic device comprises the linear motor as claimed in any one of claims 1 to 9.