High-flexibility low-noise rod-shaped linear motor
By designing an air gap structure in the rod-shaped linear motor where the magnetic coil and the moving pole interact, combined with a limiting slider and a buffer pad, the noise and stability problems caused by friction are solved, achieving low-noise, high-precision, and high-stability linear motion.
Patent Information
- Application Number
- CN202520285801.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing rod-shaped linear motors suffer from increased noise and reduced stability and accuracy due to friction between the mover and stator.
A magnetic coil is installed on the inner wall of the stator housing, and the magnetic poles of the mover housing interact with each other. Combined with an air gap design, friction is reduced, and collisions are prevented by a limit slider and a buffer pad structure, thereby enhancing thermal management and control accuracy.
It achieves low noise, improves thrust density and heat dissipation efficiency, enhances equipment stability and control precision, and prevents damage from collisions due to malfunctions.
Smart Images
Figure CN223744564U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rod-shaped linear motor technology, and in particular to a highly flexible, low-noise rod-shaped linear motor. Background Technology
[0002] A rod-type linear motor is a special type of electric motor that directly converts electrical energy into linear motion (rather than the rotational motion of traditional motors). This type of motor has a very simple structure, typically consisting of two main parts: a stator and a mover. By generating a magnetic field that interacts with a permanent magnet, the rod-type linear motor can achieve very high precision, fast response, and efficient linear motion, and is widely used in precision instruments, automated production, robotics, and other fields.
[0003] In most existing rod-shaped linear motors, the outer wall of the mover is slidably connected to the inner wall of the stator. The inner wall of the stator usually has no special shape, which increases the friction between the mover and the stator. Over time, this can easily reduce the stability and accuracy of the linear motor and increase the noise generated by the equipment during operation. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a highly flexible, low-noise rod-shaped linear motor.
[0005] This utility model is achieved by the following technical solution: a highly flexible, low-noise rod-shaped linear motor, including a stator housing, a groove is formed on the inner wall of the stator housing, a magnetic coil is fixedly connected to the inner wall of the groove, a mover housing is slidably connected to the inner wall of the stator housing, a second groove is formed on the inner wall of the mover housing, a mover magnetic pole is fixedly connected to the inner wall of the second groove, and an air gap is formed on the inner wall of the stator housing.
[0006] As a further improvement to the above solution, four air gaps are provided, and the four air gaps are evenly distributed around the center of the stator housing.
[0007] Through the above technical solution, thrust is generated by the interaction between the magnetic coil on the inner wall of the stator housing and the magnetic pole of the mover on the inner wall of the mover housing, thereby achieving linear motion.
[0008] As a further improvement to the above solution, a buffer pad is provided on the surface of the moving part housing, a limit slider is fixedly connected to the left side of the buffer pad, a limit block is provided on the outer wall of the limit slider, a limit groove is formed on the surface of the limit block, and a limit pin is provided on the inner wall of the limit groove.
[0009] As a further improvement to the above solution, a limiting groove is formed on the inner wall of the limiting block, and a second limiting slider is slidably connected to the inner wall of the limiting groove. A T-shaped slider is fixedly connected to the top of the second limiting slider. The top of the limiting groove initially has a T-shaped groove, and the outer wall of the T-shaped slider is slidably connected to the inner wall of the T-shaped groove.
[0010] As a further improvement to the above solution, two limiting pins are provided, and the two limiting pins are symmetrically arranged around the center of the limiting block. Two T-shaped slides are provided, and the two T-shaped slides are symmetrically arranged around the center of the limiting block.
[0011] As a further improvement to the above solution, an unlocking rod is fixedly connected to the back of the second limiting slider, the outer wall of the unlocking rod is slidably connected to the inner wall of the limiting block, and a spring is fixedly connected to the back of the second limiting slider, the end of the spring away from the second limiting slider is fixedly connected to the inner wall of the limiting groove.
[0012] As a further improvement to the above solution, an adjusting seat is slidably connected to the bottom of the limiting block, and a T-shaped slider two is fixedly connected to the bottom of the limiting block. The outer wall of the T-shaped slider two is slidably connected to the inner wall of the adjusting seat. A bidirectional threaded rod is threadedly connected to the inner wall of the T-shaped slider two. The outer wall of the bidirectional threaded rod is rotatably connected to the inner wall of the adjusting seat. The bidirectional threaded rod passes through the inner wall of the adjusting seat and extends therethrough. An adjusting motor is fixedly connected to the left side of the bidirectional threaded rod. A motor fixing seat is fixedly connected to the bottom of the adjusting motor. The outer wall of the motor fixing seat is fixedly connected to the outer wall of the adjusting seat.
[0013] The above technical solution involves installing the moving part housing into the buffer pad, and then installing the limiting slider inside the limiting block. The limiting slider drives the buffer pad. After the limiting slider is installed inside the limiting block, a limiting pin is installed along the limiting groove, so that the bottom of the limiting pin limits the top of the limiting slider. As the limiting pin pushes to the right, the right side of the limiting pin pushes the second limiting slider to slide along the limiting groove.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] This invention generates thrust through the interaction between the magnetic coils on the inner wall of the stator housing and the moving magnetic poles on the inner wall of the mover housing, thereby achieving linear motion. The air gap opened in the inner wall of the stator housing not only optimizes the electromagnetic force and increases the thrust density, but also reduces friction, lowers noise, improves heat dissipation efficiency, and enhances thermal management and control precision.
[0016] This invention involves installing the stator housing inside a buffer pad, followed by installing a limiting slider inside a limiting block. The limiting slider drives the buffer pad. After the limiting slider is installed inside the limiting block, a limiting pin is installed along the limiting groove, so that the bottom of the limiting pin limits the top of the limiting slider. As the limiting pin pushes to the right, the right side of the limiting pin pushes the second limiting slider to slide along the limiting groove. Simultaneously, the second limiting slider drives the T-shaped slider to slide along the T-shaped groove. When the right side of the limiting pin is installed to the right side of the limiting groove, under the reaction force of the spring, the spring pushes the second limiting slider, which slides along the limiting groove. At the same time, the second limiting slider drives the T-shaped slider to slide along the T-shaped groove, causing the second limiting slider to lock the limiting pin. This prevents the limiting pin from detaching from the top of the limiting block during operation, and prevents the rod-shaped linear motor from colliding with external objects and being damaged due to malfunction or loss of control. The buffer pad also cushions the stator housing. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the stator housing of this utility model;
[0019] Figure 3 This is a schematic diagram of the air gap structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the limiting block structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the limiting groove structure of this utility model;
[0022] Figure 6 This utility model Figure 5 Enlarged structural diagram of section A in the middle;
[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the limiting pin of this utility model;
[0024] Figure 8 This utility model Figure 6 Enlarged structural diagram of section B;
[0025] Figure 9 This is a schematic diagram of the T-shaped slider of this utility model.
[0026] Explanation of key symbols:
[0027] 1. Stator housing; 2. Slot; 3. Magnetic coil; 4. Mover housing; 5. Slot 2; 6. Mover magnetic pole; 7. Air gap; 8. Buffer pad; 9. Limiting slider; 10. Limiting block; 11. Limiting slot; 12. Limiting pin; 13. Limiting slide; 14. Limiting slider 2; 15. T-slider; 16. T-slide; 17. Unlocking rod; 18. Spring; 19. Adjusting seat; 20. T-slider 2; 21. Bidirectional threaded rod; 22. Adjusting motor; 23. Motor mounting base. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0029] Example:
[0030] Please combine Figure 1-9 This embodiment discloses a highly flexible, low-noise rod-shaped linear motor, including a stator housing 1, a groove 2 on the inner wall of the stator housing 1, a magnetic coil 3 fixedly connected to the inner wall of the groove 2, a mover housing 4 slidably connected to the inner wall of the stator housing 1, a second groove 5 on the inner wall of the mover housing 4, a mover magnetic pole 6 fixedly connected to the inner wall of the second groove 5, and an air gap 7 on the inner wall of the stator housing 1.
[0031] There are four air gaps 7, which are evenly distributed around the center of the stator housing 1.
[0032] A buffer pad 8 is provided on the surface of the moving part housing 4. A limit slider 9 is fixedly connected to the left side of the buffer pad 8. A limit block 10 is provided on the outer wall of the limit slider 9. A limit groove 11 is opened on the surface of the limit block 10. A limit pin 12 is provided on the inner wall of the limit groove 11.
[0033] The inner wall of the limiting block 10 is provided with a limiting groove 13, and the inner wall of the limiting groove 13 is slidably connected to the limiting slider 14. The top of the limiting slider 14 is fixedly connected to a T-shaped slider 15. The top of the limiting groove 13 initially has a T-shaped groove 16, and the outer wall of the T-shaped slider 15 is slidably connected to the inner wall of the T-shaped groove 16.
[0034] There are two limit pins 12, which are symmetrically arranged around the center of the limit block 10. There are two T-shaped slides 16, which are symmetrically arranged around the center of the limit block 10.
[0035] The back of the second limiting slider 14 is fixedly connected to the unlocking rod 17. The outer wall of the unlocking rod 17 is slidably connected to the inner wall of the limiting block 10. The back of the second limiting slider 14 is fixedly connected to the spring 18. The end of the spring 18 away from the second limiting slider 14 is fixedly connected to the inner wall of the limiting groove 13.
[0036] The bottom of the limiting block 10 is slidably connected to an adjusting seat 19. The bottom of the limiting block 10 is fixedly connected to a T-shaped slider 20. The outer wall of the T-shaped slider 20 is slidably connected to the inner wall of the adjusting seat 19. The inner wall of the T-shaped slider 20 is threadedly connected to a bidirectional threaded rod 21. The outer wall of the bidirectional threaded rod 21 is rotatably connected to the inner wall of the adjusting seat 19. The bidirectional threaded rod 21 passes through the inner wall of the adjusting seat 19 and extends thereafter. The left side of the bidirectional threaded rod 21 is fixedly connected to an adjusting motor 22. The bottom of the adjusting motor 22 is fixedly connected to a motor fixing seat 23. The outer wall of the motor fixing seat 23 is fixedly connected to the outer wall of the adjusting seat 19.
[0037] The implementation principle of a highly flexible, low-noise rod-shaped linear motor in this application embodiment is as follows: The magnetic coil 3 on the inner wall of the stator housing 1 and the moving magnetic pole 6 on the inner wall of the moving housing 4 interact to generate thrust, thereby achieving linear motion. The air gap 7 opened on the inner wall of the stator housing 1 not only optimizes the electromagnetic force and increases the thrust density, but also reduces friction, lowers noise, improves heat dissipation efficiency, and enhances thermal management and control precision. The moving housing 4 is installed inside the buffer pad 8, and then a limiting slider 9 is installed inside the limiting block 10. The limiting slider 9 drives the buffer pad 8. After the limiting slider 9 is installed inside the limiting block 10, a limiting pin 12 is installed along the limiting groove 11, so that the bottom of the limiting pin 12 limits the top of the limiting slider 9. Simultaneously, as the limiting pin 12 pushes to the right, the right side of the limiting pin 12 pushes the limiting slider 14 to slide along the limiting groove 13, and the limiting slider... Block 2 14 drives T-shaped slider 15 to slide along T-shaped slide groove 16. When the right side of the limiting pin 12 is installed to the right side of the limiting slide groove 13, under the reaction force of spring 18, spring 18 pushes limiting slider 2 14, limiting slider 2 14 slides along limiting slide groove 13. At the same time, limiting slider 2 14 drives T-shaped slider 15 to slide along T-shaped slide groove 16, so that limiting slider 2 14 locks the limiting pin 12, preventing the limiting pin 12 from dislodging from the top of limiting block 10 during operation, preventing the rod linear motor from being damaged by colliding with foreign objects due to malfunction or loss of control, and allowing the buffer pad 8 to buffer the stator housing 1. The motor 22 can be adjusted by running and adjusting the output end of the motor 22 to rotate the bidirectional threaded rod 21. The bidirectional threaded rod 21 causes T-shaped slider 2 20 to move inward or outward at the same time, increasing the applicability of the equipment and enabling the equipment to buffer and protect rod linear motors of different lengths.
[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A low noise bar linear motor with high flexibility, characterized by, Including the stator shell (1), the inner wall of the stator shell (1) is provided with a slot (2), the inner wall of the slot (2) is fixedly connected with a magnetic coil (3), the inner wall of the stator shell (1) is slidably connected with a rotor shell (4), the inner wall of the rotor shell (4) is provided with a slot (5), the inner wall of the slot (5) is fixedly connected with a rotor magnetic pole (6), and the inner wall of the stator shell (1) is provided with an air gap (7).
2. A low noise bar linear motor with high flexibility according to claim 1, characterized in that: The air gap (7) is provided with four, and the four air gaps (7) are evenly arranged at the center of the stator shell (1).
3. A low noise bar linear motor with high flexibility according to claim 1, characterized in that: The surface of the rotor shell (4) is provided with a buffer rubber pad (8), the left side of the buffer rubber pad (8) is fixedly connected with a limiting sliding block (9), the outer wall of the limiting sliding block (9) is provided with a limiting block (10), the surface of the limiting block (10) is provided with a limiting groove (11), and the inner wall of the limiting groove (11) is provided with a limiting pin (12).
4. A high flexibility low noise bar linear motor as claimed in claim 3, characterized in that: The inner wall of the limiting block (10) is provided with a limiting sliding groove (13), the inner wall of the limiting sliding groove (13) is slidably connected with a limiting sliding block (14), the top of the limiting sliding block (14) is fixedly connected with a T-shaped sliding block (15), and the top of the limiting sliding groove (13) is provided with a T-shaped sliding groove (16), and the outer wall of the T-shaped sliding block (15) is slidably connected in the inner wall of the T-shaped sliding groove (16).
5. A high flexibility low noise bar linear motor as claimed in claim 4, characterized in that: The limiting pin (12) is provided with two, and the two limiting pins (12) are symmetrically arranged at the center of the limiting block (10), and the T-shaped sliding groove (16) is provided with two, and the two T-shaped sliding grooves (16) are symmetrically arranged at the center of the limiting block (10).
6. A high flexibility low noise bar linear motor as claimed in claim 4, characterized in that: The back of the limiting sliding block (14) is fixedly connected with an unlocking rod (17), the outer wall of the unlocking rod (17) is slidably connected in the inner wall of the limiting block (10), the back of the limiting sliding block (14) is fixedly connected with a spring (18), and one end of the spring (18) away from the limiting sliding block (14) is fixedly connected in the inner wall of the limiting sliding groove (13).
7. A low noise bar linear motor with high flexibility according to claim 6, characterized in that: The bottom of the limiting block (10) is slidably connected with an adjusting seat (19), the bottom of the limiting block (10) is fixedly connected with a T-shaped sliding block (20), the outer wall of the T-shaped sliding block (20) is slidably connected in the inner wall of the adjusting seat (19), the inner wall of the T-shaped sliding block (20) is threadedly connected with a bidirectional threaded rod (21), the outer wall of the bidirectional threaded rod (21) is rotatably connected in the inner wall of the adjusting seat (19), the bidirectional threaded rod (21) penetrates through the inner wall of the adjusting seat (19) and extends, the left side of the bidirectional threaded rod (21) is fixedly connected with an adjusting motor (22), the bottom of the adjusting motor (22) is fixedly connected with a motor fixing seat (23), and the outer wall of the motor fixing seat (23) is fixedly connected to the outer wall of the adjusting seat (19).