Magnetic drive structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGHAI COUNTY JIMEITE ELECTRONICS CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-10
Smart Images
Figure CN224481617U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of magnetic drive technology, and more specifically, to magnetic drive structures. Background Technology
[0002] With the development of the electrical appliance industry, there are more and more types of household appliances, such as fascia guns, massage chairs, massage eye masks, and back-tapping massagers, all of which have vibration massage functions. The motor is a commonly used vibration drive component, which also includes an eccentric block connected to the motor's shaft. Thus, when the motor rotates, it drives the eccentric block to rotate, generating vibration and thus providing a vibration massage.
[0003] In existing technologies, vibration-driven components often generate significant noise during operation, with the motor driving the mechanical structure. For example, vibrating massagers produce considerable noise during massage, which is detrimental to user relaxation and negatively impacts the user experience. Therefore, reducing the noise level of vibrating massagers during operation is a problem that those skilled in the art need to consider. Summary of the Invention
[0004] This application provides a magnetic drive structure to address the problem of how to reduce noise during the operation of a vibrating massager.
[0005] An embodiment of this application provides a magnetic drive structure, including a cylindrical body, a fixed magnetic component, a movable magnetic component, and a controller. The cylindrical body includes a first end and a second end disposed along a first direction, and has an inner cavity extending from the first end to the second end. The fixed magnetic component includes a first magnet and a second magnet, the first magnet being disposed at the first end and the second magnet at the second end. The movable magnetic component is movably disposed in the inner cavity along the first direction, with one magnetic pole facing the first magnet and the other magnetic pole facing the second magnet, and the movable magnetic component is capable of being subjected to the magnetic forces of the first magnet and the second magnet. The controller is electrically connected to at least one of the first magnet, the second magnet, and the movable magnetic component, and the controller is used to change the direction of the magnetic force on the movable magnetic component to control the movable magnetic component to reciprocate along the first direction.
[0006] Compared to existing technologies, the magnetic drive structure provided in this embodiment movably positions a moving magnetic component between a first magnet and a second magnet. When the moving magnetic component moves within the cavity to a position near the first end, the controller controls the first magnet to generate a repulsive magnetic force with the moving magnetic component, while the second magnet generates an attractive magnetic force with the moving magnetic component, causing the moving magnetic component to move towards the second end. When the moving magnetic component moves within the cavity to a position near the second end, the controller controls the second magnet to generate a repulsive magnetic force with the moving magnetic component, while the first magnet generates an attractive magnetic force with the moving magnetic component, causing the moving magnetic component to move towards the first end. This cycle repeats, generating vibration. The moving magnetic component operates quietly, and the magnetic drive structure, through the controller, changes the direction of the magnetic force, ensuring that the moving magnetic component does not contact or collide with the first or second magnet during movement, thus eliminating collision noise and reducing the noise of the massager.
[0007] In one possible embodiment, both the first magnet and the second magnet are electromagnets, and the controller is electrically connected to the first magnet and the second magnet respectively. The controller changes the direction of the current input to the first magnet and the second magnet to change the direction of the magnetic force.
[0008] In one possible embodiment, the moving magnetic component is an electromagnet, the controller is electrically connected to the moving magnetic component, and the controller changes the direction of the current input to the moving magnetic component to change the direction of the magnetic force.
[0009] In one possible embodiment, the magnetic drive structure further includes a first coil and a second coil, the first coil being wound around the circumferential surface of the first end and the second coil being wound around the circumferential surface of the second end, the controller being electrically connected to the first coil and the second coil respectively, the controller inputting current to the first coil and the second coil, and the controller being used to control the first coil and the second coil to generate a magnetic field.
[0010] In one possible embodiment, the magnetic drive structure further includes a first sensor and a second sensor, with the controller electrically connected to both sensors. The first sensor is located at the first end and detects when the moving magnetic component moves to a position close to the first end, emitting a first detection signal. The second sensor is located at the second end and detects when the moving magnetic component moves to a position close to the second end, emitting a second detection signal. Upon receiving both the first and second detection signals, the controller changes the direction of the magnetic force.
[0011] As can be seen, the magnetic drive structure detects the movement position of the moving magnetic component through the first and second sensors and sends the detection signal to the controller. The controller receives the detection signal and changes the direction of the magnetic force on the moving magnetic component, causing the movement direction of the moving magnetic component to reverse, thereby improving the positional accuracy of the moving magnetic component. The moving magnetic component does not contact or collide with the first or second magnet during movement, thus reducing the noise of the vibration massager during operation.
[0012] In one possible embodiment, the controller includes a magnetic drive module, which includes an H-bridge drive circuit for supplying power to generate the magnetic force.
[0013] In one possible embodiment, the controller further includes a detection module and a control module. The control module is electrically connected to the detection module and the H-bridge drive circuit, respectively. The detection module is used to detect the position of the moving magnetic component and send a detection signal to the control module. The control module controls the current direction of the H-bridge drive circuit according to the detection signal.
[0014] In one possible embodiment, the detection module includes a first detection circuit and a second detection circuit. The first detection circuit is used to emit a first detection signal when the moving magnetic component moves to a position close to the first end, and the second detection circuit is used to emit a second detection signal when the moving magnetic component moves to a position close to the second end. The control module is connected to the H-bridge drive circuit, the first detection circuit, and the second detection circuit, respectively. The control module is used to receive the first detection signal and the second detection signal and control the current direction of the H-bridge drive circuit.
[0015] In one possible embodiment, the magnetic drive structure further includes a first buffer block and a second buffer block. The first buffer block is located in the inner cavity near the first end, and the surface of the first buffer block facing the moving magnetic component has a first boss. The second buffer block is located in the inner cavity near the second end, and the surface of the second buffer block facing the moving magnetic component has a second boss.
[0016] In one possible embodiment, the first direction is a straight line or a curved line, and the inner cavity extends in a straight line or a curved shape. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of a magnetic drive structure according to an embodiment of this application;
[0019] Figure 2 This is a schematic diagram of a magnetic drive structure according to another embodiment of this application;
[0020] Figure 3 for Figure 1 A schematic diagram of a magnetic drive structure in which the moving magnetic component is a permanent magnet;
[0021] Figure 4 for Figure 1 A schematic diagram of the structure of a magnetically driven structure in which the moving magnetic component is an electromagnet.
[0022] Figure 5 for Figure 1 A schematic diagram of the magnetic drive structure with the addition of a first coil and a second coil;
[0023] Figure 6 for Figure 1 Schematic diagram of the controller of the magnetic drive structure;
[0024] Figure 7 for Figure 6 Circuit diagram of the magnetic drive module of the controller with magnetic drive structure;
[0025] Figure 8 for Figure 6 The circuit diagram of the detection module of the controller with a magnetic drive structure.
[0026] Explanation of key component symbols:
[0027] 1. Magnetic drive structure; 11. Cylinder; 111. First end; 112. First through hole; 113. Second end; 114. Second through hole; 115. Inner cavity;
[0028] 12. Moving magnetic component; 121. First magnetic pole; 122. Second magnetic pole;
[0029] 13. Fixed magnetic component; 131. First magnet; 132. First coil; 134. Second magnet; 135. Second coil; 14. First direction;
[0030] 15. Controller; 151. Magnetic drive module; 152. H-bridge drive circuit; 153. Connection terminal; 154. Detection module; 155. First detection circuit; 156. Second detection circuit; 157. Control module; 16. First sensor; 17. Second sensor;
[0031] 18. First buffer block; 181. First boss; 19. Second buffer block; 191. Second boss. Detailed Implementation
[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0033] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.
[0035] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0036] Example
[0037] Please see Figures 1 to 8As shown, an embodiment of this application provides a magnetic drive structure 1, including a cylindrical body 11, a fixed magnetic component 13, a movable magnetic component 12, and a controller 15. The cylindrical body 11 includes a first end 111 and a second end 113 disposed along a first direction 14. The cylindrical body 11 has an inner cavity 115 extending from the first end 111 to the second end 113. The fixed magnetic component 13 includes a first magnet 131 and a second magnet 134, with the first magnet 131 disposed at the first end 111 and the second magnet 134 disposed at the second end 113. The movable magnetic component 12 is movably disposed in the inner cavity 115 along the first direction 14, with one magnetic pole of the movable magnetic component 12 facing the first magnet 131 and the other magnetic pole facing the second magnet 134. The movable magnetic component 12 can be subjected to the magnetic forces of the first magnet 131 and the second magnet 134. The controller 15 is electrically connected to at least one of the first magnet 131, the second magnet 134 and the moving magnetic component 12. The controller 15 is used to change the direction of the magnetic force on the moving magnetic component 12 so as to control the moving magnetic component 12 to reciprocate along the first direction 14, so that the magnetic drive structure 1 vibrates.
[0038] The magnetic drive structure 1 provided in this embodiment movably disposes of a moving magnetic component 12 between a first magnet 131 and a second magnet 134. When the moving magnetic component 12 moves to a position close to the first end 111 in the inner cavity 115, the controller 15 controls the first magnet 131 and the moving magnetic component 12 to generate a repulsive magnetic force, and the second magnet 134 and the moving magnetic component 12 to generate an attractive magnetic force, causing the moving magnetic component 12 to move toward the second end 113. When the moving magnetic component 12 moves to a position close to the second end 113 in the inner cavity 115, the controller 15 controls the second magnet 134 and the moving magnetic component 12 to generate a repulsive magnetic force, and the first magnet 131 and the moving magnetic component 12 to generate an attractive magnetic force, causing the moving magnetic component 12 to move toward the first end 111. This cycle repeats to generate vibration. The moving magnetic component makes little noise during movement, and the magnetic drive structure 1 changes the direction of the magnetic force through the controller 15, so that the moving magnetic component 12 does not come into contact or collide with the first magnet 131 or the second magnet 134 during movement, thus eliminating collision noise and reducing the noise of the massager.
[0039] In some embodiments, depending on the different usage environments, the first direction 14 of the magnetic drive structure 1 is a straight direction or a curved direction, the inner cavity 115 extends in a straight or curved shape, and the shape of the cylinder 11 is adaptively adjusted according to the extension direction of the inner cavity 115.
[0040] The circumferential surface of the moving magnetic component 12 fits into the inner cavity 115. The surface of the inner cavity 115 is smooth, allowing the moving magnetic component 12 to be slidably disposed in the inner cavity 115, thereby reducing the friction between the moving magnetic component 12 and the cylinder 11, reducing friction noise, and thus reducing the noise during massage.
[0041] The controller 15 can automatically control the change of magnetic force direction through periodic signal modulation. For example, the controller 15 can adjust or calculate the time it takes for the moving magnetic component 12 to move from the first end 111 to the second end 113, thereby controlling the magnetic force change period and causing the moving magnetic component 12 to reciprocate along the first direction 14. Alternatively, the controller 15 can also detect the position of the moving magnetic component 12 through a sensor, thereby controlling the magnetic force direction to change accordingly, causing the moving magnetic component 12 to reciprocate along the first direction 14.
[0042] Understandably, the moving magnetic component 12 is subjected to the combined forces of the first magnet 131 and the second magnet 134, thus the moving magnetic component 12 moves faster and has greater kinetic energy.
[0043] The moving magnetic component 12, the first magnet 131, and the second magnet 134 can be selected from at least one of electromagnets, permanent magnets, or coils, so that the moving magnetic component 12 and the fixed magnetic component 13 generate a magnetic force that interacts with each other. The controller 15 controls the direction of the magnetic force to change in coordination, so that the moving magnetic component 12 reciprocates along the first direction 14, thereby causing the magnetic drive structure 1 to vibrate. Possible implementations are described below.
[0044] Please combine Figure 3 As shown, in one possible embodiment, the first magnet 131 and the second magnet 134 are both electromagnets. The controller 15 is electrically connected to the first magnet 131 and the second magnet 134 respectively. The controller 15 changes the direction of the current input to the first magnet 131 and the second magnet 134 to change the direction of the magnetic force.
[0045] In this embodiment, both the first magnet 131 and the second magnet 134 are electromagnets. Preferably, the electromagnets are made of soft iron or silicon steel, which demagnetizes quickly, so that the first magnet 131 and the second magnet 134 are magnetic when energized and lose their magnetism when de-energized.
[0046] The moving magnetic component 12 is a cylindrical permanent magnet. The moving magnetic component 12 includes a first magnetic pole 121 (N magnetic pole) and a second magnetic pole 122 (S magnetic pole). The first magnetic pole 121 and the second magnetic pole 122 are connected along a first direction 14. The first magnetic pole 121 is disposed toward the first end 111, and the second magnetic pole 122 is disposed toward the second end 113.
[0047] The magnetic drive structure 1 controls the simultaneous change of the magnetic force direction of the first magnet 131 and the second magnet 134 via the controller 15. This ensures that when the moving magnetic component 12 moves close to either the first magnet 131 or the second magnet 134, its movement direction reverses promptly. This prevents the moving magnetic component 12 from contacting or colliding with the first magnet 131 or the second magnet 134 during movement, further reducing noise during vibration of the magnetic drive structure 1 and thus lowering the noise level during massage.
[0048] Furthermore, the first magnet 131 applies magnetic force to the first magnetic pole 121 of the moving magnetic component 12 and the second magnet 134 applies magnetic force to the moving magnetic component 12 together, which increases the force on the moving magnetic component 12 along the same direction, which is beneficial to increase the kinetic energy of the moving magnetic component 12 and improve the vibration intensity of the cylinder 11.
[0049] Please combine Figure 4 As shown, in one embodiment, the moving magnetic component 12 is an electromagnet. Preferably, the electromagnet is made of soft iron or silicon steel, which demagnetizes quickly, so that the moving magnetic component 12 is magnetic when energized and loses its magnetism when de-energized. The controller 15 is electrically connected to the moving magnetic component 12, and the controller 15 changes the direction of the current input to the moving magnetic component 12 to change the direction of the magnetic force.
[0050] In this embodiment, the controller 15 changes the direction of the current flowing into the moving magnetic component 12, thereby changing the magnetic poles of the moving magnetic component 12. The magnetic poles of the first magnet 131 and the second magnet 134 remain unchanged. The first magnet 131 and the second magnet 134 are electromagnets or permanent magnets. The magnetic drive structure 1 changes the magnetic poles of the moving magnetic component 12, causing the moving magnetic component 12 to attract or repel the first magnet 131 and the second magnet 134 respectively, thereby causing the moving magnetic component 12 to reciprocate along the first direction 14.
[0051] In one embodiment, the magnetic drive structure 1 further includes a first sensor 16 and a second sensor 17, and the controller 15 is electrically connected to the first sensor 16 and the second sensor 17 respectively. The first sensor 16 is disposed at the first end 111, and is used to detect that the moving magnetic component 12 has moved to a position close to the first end 111, and to emit a first detection signal. The second sensor 17 is disposed at the second end 113, and is used to detect that the moving magnetic component 12 has moved to a position close to the second end 113, and to emit a second detection signal. When the controller 15 receives the first detection signal and the second detection signal, it changes the direction of the magnetic force.
[0052] In this embodiment, the controller 15 automatically controls the coordinated change of the magnetic force between the fixed magnetic component 13 and the moving magnetic component 12 based on the detection signals from the first sensor 16 and the second sensor 17. Both the first sensor 16 and the second sensor 17 are position sensors used to detect the position of the moving magnetic component 12. For example, the first sensor 16 and the second sensor 17 can be limit switches or proximity switches; preferably, the proximity switch uses a photoelectric sensor.
[0053] As can be seen, the magnetic drive structure 1 detects the movement position of the moving magnetic component 12 through the first sensor 16 and the second sensor 17, and sends the detection signal to the controller 15. The controller 15 receives the detection signal and changes the direction of the magnetic force on the moving magnetic component 12, causing the movement direction of the moving magnetic component 12 to reverse. The first sensor 16 and the second sensor 17 help improve the positional accuracy of the moving magnetic component 12, ensuring that the moving magnetic component 12 does not contact or collide with the first magnet 131 or the second magnet 134 during movement, thereby reducing the noise when the vibration massager is working.
[0054] Preferably, the first sensor 16 includes a first photoelectric sensor, and the second sensor 17 includes a second photoelectric sensor. A first through hole 112 is formed at the first end 111, communicating with the inner cavity 115, and the first photoelectric sensor is disposed in the first through hole 112. A second through hole 114 is formed at the second end 113, communicating with the inner cavity 115, and the second photoelectric sensor is disposed in the second through hole 114. The first photoelectric sensor detects the position of the moving magnetic component 12 in the inner cavity 115 through the first through hole 112, and the second photoelectric sensor detects the position of the moving magnetic component 12 in the inner cavity 115 through the second through hole 114.
[0055] The first through hole 112 and the second through hole 114 are also used for air flow in the inner cavity 115. Understandably, when the moving magnetic component 12 reciprocates in the inner cavity 115, air enters or exits the inner cavity 115 through the first through hole 112 and the second through hole 114, which is conducive to the smooth movement of the moving magnetic component 12 in the inner cavity 115.
[0056] The magnetic drive structure 1 detects the movement position of the moving magnetic component 12 by selecting a photoelectric sensor. The photoelectric sensor generates a detection signal when it is physically blocked by the moving magnetic component 12, thereby improving the stability and accuracy of the detection. This setting helps the controller 15 to respond quickly and control the moving magnetic component 12 to prevent it from contacting or colliding with the first magnet 131 or the second magnet 134 during movement, thereby reducing the vibration noise of the magnetic drive structure 1 and reducing the noise of the massager during massage.
[0057] Please combine Figure 5As shown, in one embodiment, the magnetic drive structure 1 further includes a first coil 132 and a second coil 135. The first coil 132 is wound around the circumferential surface of the first end 111, and the second coil 135 is wound around the circumferential surface of the second end 113. The controller 15 is electrically connected to the first coil 132 and the second coil 135 respectively. The controller 15 inputs current to the first coil 132 and the second coil 135. The controller 15 is used to control the first coil 132 and the second coil 135 to generate a magnetic field.
[0058] In this embodiment, the first sensor 16 is disposed between the first magnet 131 and the first coil 132, and the second sensor 17 is disposed between the second magnet 134 and the second coil 135. The first coil 132 and the second coil 135 are wound around the cylinder 11 and energized to form an energized solenoid, thereby generating a magnetic field in the inner cavity 115.
[0059] When the moving magnetic component 12 moves toward the first end 111, it moves to the position of the first coil 132, and the magnetic field of the first coil 132 decelerates the moving magnetic component 12. When the moving magnetic component 12 moves to the position of the first sensor 16, the controller 15 receives the first detection signal and controls the magnetic force on the moving magnetic component 12 to reverse, so that the moving magnetic component 12 moves toward the second end 113, and the magnetic field of the first coil 132 accelerates the moving magnetic component 12.
[0060] When the moving magnetic component 12 moves toward the second end 113, it moves to the position of the second coil 135, and the magnetic field of the second coil 135 decelerates the moving magnetic component 12. When the moving magnetic component 12 moves to the position of the second sensor 17, the controller 15 receives the second detection signal and controls the magnetic force on the moving magnetic component 12 to reverse, so that the moving magnetic component 12 moves toward the first end 111, and the magnetic field of the second coil 135 accelerates the moving magnetic component 12.
[0061] Understandably, the moving magnetic component 12 is subjected to the combined force of the first coil 132, the first magnet 131, the second coil 135, and the second magnet 134, which makes the reciprocating motion of the moving magnetic component 12 smoother, faster, and with greater kinetic energy.
[0062] This application is not limited to coils, permanent magnets or electromagnets; the magnetic interaction between the fixed magnetic component 13 and the moving magnetic component 12 can drive the moving magnetic component 12 to reciprocate along the first direction 14.
[0063] The magnetic control circuit of the controller 15 of the magnetic drive structure 1 will be described below.
[0064] Please combine Figures 6 to 8As shown, in one embodiment, the controller 15 includes a magnetic drive module 151, which includes an H-bridge drive circuit 152 for supplying power to generate the magnetic force required for the movement of the moving magnetic component 12.
[0065] In this embodiment, the connection terminal 153 of the H-bridge drive circuit 152 is electrically connected to the electromagnet. The H-bridge drive circuit 152 is used to provide current to the electromagnet to generate magnetic force. For example, when the moving magnetic component 12 is an electromagnet and the first magnet 131 and the second magnet 134 are both permanent magnets, the H-bridge drive circuit 152 provides current to the moving magnetic component 12, thereby generating mutual attraction and repulsion magnetic forces between the moving magnetic component 12 and the first magnet 131 and the second magnet 134, respectively. One end of the moving magnetic component 12 attracts the first magnet 131, and the other end repels the second magnet 134, thereby causing the moving magnetic component 12 to move towards the first end 111. The direction of the current in the H-bridge drive circuit 152 changes, causing the direction of the magnetic force on the moving magnetic component 12 to change, thereby causing the moving magnetic component 12 to move towards the second end 113. In this way, the direction of the current provided by the H-bridge drive circuit 152 changes back and forth, causing the moving magnetic component 12 to reciprocate between the first magnet 131 and the second magnet 134.
[0066] Specifically, the H-bridge drive circuit 152 includes a voltage terminal BAT, resistors R4, R6, R10, R12, R15, R17, R20, and R23, a connection terminal 153, a first dual-channel MOSFET U5, and a second dual-channel MOSFET U6.
[0067] The first dual-channel MOSFET U5 includes a first power-on channel Q1 and a first ground channel Q2, and the second dual-channel MOSFET U6 includes a second power-on channel Q3 and a second ground channel Q4. Both the first dual-channel MOSFET U5 and the second dual-channel MOSFET U6 are DMG6601LVT-7SOT23-6 field-effect transistors.
[0068] A voltage is input to the BAT terminal of the H-bridge drive circuit 152, and the first power-on channel Q1 and the second ground channel Q4 are simultaneously turned on, while Q2 and Q3 are turned off, so that forward current flows through the connection terminal 153 of the H-bridge drive circuit 152. The first ground channel Q2 and the second power-on channel Q3 are simultaneously turned on, while Q1 and Q4 are turned off, so that reverse current flows through the connection terminal 153 of the H-bridge drive circuit 152. This alternating change of forward and reverse current causes the electromagnet to generate an alternating magnetic field, which is used to generate the magnetic force required for the reciprocating motion of the moving magnetic component 12.
[0069] In one embodiment, the controller 15 further includes a detection module 154 and a control module 157. The control module 157 is electrically connected to the detection module 154 and the H-bridge drive circuit 152, respectively. The detection module 154 is used to detect the position of the moving magnetic component 12 and send a detection signal to the control module 157. The control module 157 controls the current direction of the H-bridge drive circuit 152 according to the detection signal.
[0070] The detection module 154 includes a first detection circuit 155 and a second detection circuit 156. The first detection circuit 155 is used to emit a first detection signal when the moving magnetic component 12 moves to a position close to the first end 111, and the second detection circuit 156 is used to emit a second detection signal when the moving magnetic component 12 moves to a position close to the second end 113. The control module 157 is used to receive the first and second detection signals and control the current direction of the H-bridge drive circuit 152.
[0071] In this embodiment, when the moving magnetic component 12 moves to the first end 111 and blocks the first photoelectric sensor, the first detection circuit 155 sends a first detection signal. The control module 157 receives the first detection signal and controls the current of the H-bridge drive circuit 152 to change direction, thereby stopping the moving magnetic component 12 from moving toward the first end 111 and starting to move toward the second end 113. When the moving magnetic component 12 moves to the second end 113 and blocks the second photoelectric sensor, the second detection circuit 156 sends a second detection signal. The control module 157 receives the second detection signal and controls the current of the H-bridge drive circuit 152 to change direction, thereby stopping the moving magnetic component 12 from moving toward the second end 113 and starting to move toward the first end 111. This cycle repeats, causing the cylinder 11 to vibrate. At the same time, the moving magnetic component 12 does not collide with the first magnet 131 or the second magnet 134, thereby reducing the noise of the magnetic drive structure 1 during vibration and reducing the noise of the massager during massage.
[0072] Specifically, the control module 157 includes a SEN_A signal terminal, a SEN_B signal terminal, a MA_NG1 signal terminal, a MA_PG1 signal terminal, a MA_NG2 signal terminal, and a MA_PG2 signal terminal. The SEN_A signal terminal is electrically connected to the first photoelectric sensor to receive a first detection signal. The SEN_B signal terminal is electrically connected to the second photoelectric sensor to receive a second detection signal.
[0073] The MA_NG1 signal terminal is connected to the first grounding channel Q2 via R10 to control the connection or disconnection of the first grounding channel Q2.
[0074] The MA_PG1 signal terminal is connected to the first power-on channel Q1 via R4 to control the connection or disconnection of the first power-on channel Q1.
[0075] The MA_NG2 signal terminal is connected to the second grounding channel Q4 via R20 to control the connection or disconnection of the second grounding channel Q4.
[0076] The MA_PG2 signal terminal is connected to the second power-on channel Q3 via R15 to control the connection or disconnection of the second power-on channel Q3.
[0077] When the magnetic drive structure 1 is in use, the moving magnetic component 12 moves to a position close to the first end 111. The first sensor 16 detects the moving magnetic component 12 and sends a first detection signal. The control module 157 of the controller 15 receives the first detection signal from the SEN_A signal terminal. The control module 157 inputs a low level to MA_PG1 and a high level signal to MA_NG2, making the first power-on channel Q1 and the second ground channel Q4 conduct. At the same time, the control module 157 inputs a high level to MA_PG2 and a low level signal to MA_NG1, making the first ground channel Q2 and the second power-on channel Q3 cut off. The H-bridge drive circuit 152 is connected and a positive current flows through it. The moving magnetic component 12 is subjected to the magnetic force of the first magnet 131 and the second magnet 134 and moves toward the second end 113.
[0078] When the moving magnetic component 12 moves to a position close to the second end 113, the second sensor 17 detects the moving magnetic component 12 and sends a second detection signal. The control module 157 of the controller 15 receives the second detection signal from the SEN_B signal terminal. The control module 157 inputs a low level to MA_PG2 and a high level signal to MA_NG1, making the first grounding channel Q2 and the second power-on channel Q3 conduct. At the same time, the control module 157 inputs a low level to MA_NG2 and a high level signal to MA_PG1, making the first power-on channel Q1 and the second grounding channel Q4 cut off. The H-bridge drive circuit 152 is connected and a reverse current flows, thereby reversing the magnetic force on the moving magnetic component 12, causing the moving magnetic component 12 to move towards the first end 111. This cycle repeats, causing the cylinder 11 to vibrate. The moving magnetic component 12 not only produces less noise during movement, but also does not come into contact or collide with the first magnet 131 or the second magnet 134 during movement, thereby reducing the noise of the magnetic drive structure 1 during vibration massage and reducing the noise of the massager.
[0079] In one embodiment, the magnetic drive structure 1 further includes a first buffer block 18 and a second buffer block 19. The first buffer block 18 is located in the inner cavity 115 near the first end 111, and the surface of the first buffer block 18 facing the moving magnetic component 12 is provided with a first boss 181. The second buffer block 19 is located in the inner cavity 115 near the second end 113, and the surface of the second buffer block 19 facing the moving magnetic component 12 is provided with a second boss 191.
[0080] In this embodiment, the first buffer block 18 and the second buffer block 19 are made of elastic material, and the first boss 181 and the second boss 191 are provided in multiple ways to buffer the moving magnetic component 12, thereby reducing the vibration noise of the magnetic drive structure 1 and reducing the noise of the massager during massage.
[0081] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.
Claims
1. A magnetic drive structure, characterized in that, include: A cylindrical body includes a first end and a second end disposed along a first direction, the cylindrical body having an inner cavity extending from the first end to the second end; A fixed magnetic component includes a first magnet and a second magnet, wherein the first magnet is disposed at the first end and the second magnet is disposed at the second end; A movable magnetic component is movably disposed in the inner cavity along the first direction. One magnetic pole of the movable magnetic component faces the first magnet and the other magnetic pole faces the second magnet. The movable magnetic component can be subjected to the magnetic forces of the first magnet and the second magnet. as well as A controller is electrically connected to at least one of the first magnet, the second magnet, and the moving magnetic component. The controller is used to change the direction of the magnetic force on the moving magnetic component to control the moving magnetic component to reciprocate along the first direction.
2. The magnetic drive structure according to claim 1, characterized in that: Both the first magnet and the second magnet are electromagnets. The controller is electrically connected to the first magnet and the second magnet respectively. The controller changes the direction of the current input to the first magnet and the second magnet to change the direction of the magnetic force.
3. The magnetic drive structure according to claim 1, characterized in that: The moving magnetic component is an electromagnet, and the controller is electrically connected to the moving magnetic component. The controller changes the direction of the current input to the moving magnetic component to change the direction of the magnetic force.
4. The magnetic drive structure according to claim 1, characterized in that: The magnetic drive structure also includes a first coil and a second coil. The first coil is wound around the circumference of the first end, and the second coil is wound around the circumference of the second end. The controller is electrically connected to the first coil and the second coil respectively. The controller inputs current to the first coil and the second coil and controls the first coil and the second coil to generate a magnetic field.
5. The magnetic drive structure according to any one of claims 1 to 4, characterized in that: The magnetic drive structure further includes a first sensor and a second sensor, and the controller is electrically connected to the first sensor and the second sensor respectively. The first sensor is disposed at the first end, and the first sensor is used to detect that the moving magnetic component moves to a position close to the first end and emits a first detection signal; The second sensor is located at the second end and is used to detect when the moving magnetic component moves to a position close to the second end and to emit a second detection signal. When the controller receives the first detection signal and the second detection signal, it changes the direction of the magnetic force.
6. The magnetic drive structure according to claim 1, characterized in that: The controller includes a magnetic drive module, which includes an H-bridge drive circuit for supplying power to generate the magnetic force.
7. The magnetic drive structure according to claim 6, characterized in that: The controller further includes a detection module and a control module. The control module is electrically connected to the detection module and the H-bridge drive circuit, respectively. The detection module is used to detect the position of the moving magnetic component and send a detection signal to the control module. The control module controls the current direction of the H-bridge drive circuit according to the detection signal.
8. The magnetic drive structure according to claim 7, characterized in that: The detection module includes a first detection circuit and a second detection circuit. The first detection circuit is used to emit a first detection signal when the moving magnetic component moves to a position close to the first end. The second detection circuit is used to emit a second detection signal when the moving magnetic component moves to a position close to the second end. The control module is connected to the H-bridge drive circuit, the first detection circuit, and the second detection circuit respectively. The control module is used to receive the first detection signal and the second detection signal and control the current direction of the H-bridge drive circuit.
9. The magnetic drive structure according to claim 1, characterized in that: The magnetic drive structure further includes a first buffer block and a second buffer block. The first buffer block is located in the inner cavity near the first end, and the surface of the first buffer block facing the moving magnetic component has a first protrusion. The second buffer block is located in the inner cavity near the second end, and the surface of the second buffer block facing the moving magnetic component has a second protrusion.
10. The magnetic drive structure according to claim 1, characterized in that: The first direction is a straight line or a curved line, and the inner cavity extends in a straight line or a curved shape.