Lifting motor with self-locking module

Abstract

The utility model relates to the technical field of self locking device, concretely is a kind of lifting motor with self locking module, including shell, drive is arranged in the shell, mounting seat is arranged on the shell, output shaft is arranged on the drive output end, self locking assembly is arranged between the output shaft and shell, the self locking assembly includes the adsorption subassembly being arranged on the shell, magnetic block is arranged in the adsorption subassembly, fixed ring is set on the output shaft, magnetic cooperation subassembly is arranged on the fixed ring, this lifting motor with self locking module, utilize magnetic adsorption and mechanical limit double structure, long-term use still can keep stable magnetic force, mechanical limit structure is further enhanced the reliability of self locking by the cooperation of moving block and positioning hole, ensure that lifting motor keeps stable in stop state, improve the security of equipment.

Description

Technical Field

[0001] This utility model relates to the field of self-locking device technology, specifically a lifting motor with a self-locking module. Background Technology

[0002] As the core component for achieving linear motion or lifting functions, the reliability and safety of the lifting motor are of paramount importance. The self-locking function is a key technology for the lifting motor to maintain a stable position when it is stopped and to prevent it from sliding or falling due to external forces. In smart home lifting desks, the self-locking function can prevent the tabletop from falling accidentally.

[0003] Patent CN215267956U discloses a motor, linear actuator, and lifting platform with a self-locking function. The motor includes a housing, a driver disposed within the housing, and an end cover that docks with the housing. It also includes a drive shaft that is controlled to rotate by the driver and a self-locking mechanism disposed on the outer periphery of the drive shaft. The self-locking mechanism includes an annular mounting portion and a friction portion disposed on the inner ring of the annular mounting portion. The annular mounting portion and the friction portion are integrally formed. The self-locking mechanism is interference-fitted with the end cover so that the friction portion abuts against the outer periphery of the drive shaft and applies a radial self-locking force to the drive shaft.

[0004] However, the existing technologies mentioned above mainly use elastic materials to achieve self-locking. During long-term use, elastic materials are subjected to repeated compression and friction, which will gradually cause elastic decay and wear, resulting in a gradual weakening of the self-locking force or even loss of self-locking function. This gradual performance degradation is insidious, and the self-locking function will be suddenly lost after reaching a certain threshold, which poses a safety hazard. Therefore, we propose a lifting motor with a self-locking module. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a lifting motor with a self-locking module, comprising a housing, a driver disposed within the housing, a mounting base disposed on the housing, an output shaft disposed on the output end of the driver, a self-locking assembly disposed between the output shaft and the housing, the self-locking assembly comprising an adsorption assembly disposed on the housing, a magnetic block disposed within the adsorption assembly, a fixing ring sleeved on the output shaft, and a magnetic engagement assembly disposed on the fixing ring, wherein the magnetic engagement assembly and the magnetic block are magnetically engaged.

[0006] In some embodiments, the magnetic block is configured as a ring.

[0007] In some embodiments, the adsorption component is configured to be de-energized.

[0008] In some embodiments, the magnetic mating assembly includes extension rods disposed on a fixed ring and evenly distributed thereon, one end of which is provided with a roller, and the roller is magnetically mated with the magnetic block.

[0009] In some embodiments, a clearance opening is provided on one side of the fixed ring, a synchronization block is provided on the clearance opening, a limit ring is provided on one side of the magnetic block, a uniformly distributed mounting groove is provided in the synchronization block, a movable block is slidably installed in the mounting groove, a return spring is provided at one end of the movable block, and the other end of the return spring is provided on the inner wall of the mounting groove, and a positioning hole adapted to the shape of the movable block is provided in the limit ring.

[0010] In some embodiments, a guide rod is provided in the mounting slot, and the guide rod is inserted into a movable block and slidably installed.

[0011] In some embodiments, the positioning holes are configured to be evenly distributed within the limiting ring.

[0012] This utility model has at least the following beneficial effects:

[0013] Utilizing a dual structure of magnetic adsorption and mechanical limiting, the device maintains stable magnetic force even after long-term use. The mechanical limiting structure, through the cooperation of the moving block and the positioning hole, further enhances the reliability of the self-locking mechanism, ensuring the stability of the lifting motor when it is stopped, thus improving the safety of the equipment. Since the self-locking function of this device does not rely on the elastic deformation of elastic materials, there will be no gradual and hidden performance degradation. When there is a failure of the magnetic component or damage to the mechanical parts, the self-locking function will fail directly, which can be detected in time and facilitates maintenance personnel to quickly locate the problem. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0016] Figure 3 This is a schematic diagram of the roller position structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the position structure of the synchronization block of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the synchronization block and the limiting ring of this utility model.

[0019] In the diagram: 1. Driver; 2. Housing; 3. Mounting base; 4. Output shaft; 5. Adsorption assembly; 6. Self-locking assembly; 7. Magnetic block; 8. Fixing ring; 9. Extension rod; 10. Roller; 11. Clearance opening; 12. Synchronization block; 13. Limiting ring; 14. Positioning hole; 15. Mounting slot; 16. Guide rod; 17. Return spring; 18. Moving block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Please see Figures 1-5 This utility model provides a technical solution:

[0023] A lifting motor with a self-locking module is designed to achieve reliable self-locking through an innovative magnetic adsorption structure, solving the safety hazards caused by the degradation of elastic material performance in existing technologies. The motor includes a housing 2, a driver 1 inside the housing 2, a mounting base 3 on the housing 2, an output shaft 4 on the output end of the driver 1, and a self-locking assembly 6 between the output shaft 4 and the housing 2. The self-locking assembly 6 includes an adsorption assembly 5 on the housing 2, a magnetic block 7 inside the adsorption assembly 5, a fixing ring 8 on the output shaft 4, and a magnetic engagement assembly on the fixing ring 8, which magnetically engages with the magnetic block 7. The adsorption component 5 is ring-shaped and is designed to be de-energized. It is installed on the inner wall of the outer casing 2 and adopts a de-energized electromagnetic structure. When energized, it can eliminate the magnetic force of the magnetic block 7. The adsorption component 5 is connected to an external power supply and control circuit. When it receives an energizing signal, it can quickly lose its magnetism. The magnetic block 7 is ring-shaped and fits tightly with the adsorption component 5, ensuring that the magnetic block 7 can function stably when the adsorption component 5 is energized or de-energized. The inner hole of the fixing ring 8 and the output shaft 4 are interference-fitted to ensure that the fixing ring 8 and the output shaft 4 rotate and move synchronously. The fixing ring 8 is equipped with a magnetic engagement component for magnetic engagement with the magnetic block 7, thereby realizing a self-locking function.

[0024] This device utilizes a dual structure of magnetic adsorption and mechanical limiting, maintaining stable magnetic force even after long-term use. The mechanical limiting structure, through the cooperation of the moving block 18 and the positioning hole 14, further enhances the reliability of self-locking, ensuring the stability of the lifting motor when it is stopped, thus improving the safety of the equipment. Since the self-locking function of this device does not rely on the elastic deformation of elastic materials, there will be no gradual and hidden performance degradation. When there is a failure of the magnetic component or damage to the mechanical parts, the self-locking function will directly fail, which can be detected in time and facilitates maintenance personnel to quickly locate the problem.

[0025] Example 2

[0026] Please see Figures 1-5 This utility model provides a technical solution:

[0027] Based on Example 1, the structure of the magnetic mating component is further optimized.

[0028] The magnetic coupling assembly includes extension rods 9 evenly distributed on the fixed ring 8. One end of the extension rod 9 is equipped with a roller 10, which magnetically engages with the magnetic block 7. The outer ring of the roller 10 is made of a soft magnetic material with good magnetic permeability, and a deep groove ball bearing is embedded inside to ensure that the roller 10 can rotate flexibly. The outer surface of the roller 10 is opposite to the inner circumferential surface of the magnetic block 7. When the adsorption assembly 5 is de-energized, the roller 10 is tightly attached to the magnetic block 7 under the magnetic force of the magnetic block 7, generating friction and thus achieving self-locking of the output shaft 4. When the adsorption assembly 5 is energized, the magnetic force of the magnetic block 7 is weakened, and the roller 10 and the magnetic block 7 have a contact limiting effect, allowing the output shaft 4 to rotate freely. Through the special shape of the roller 10 itself, the form of rotation within the magnetic block 7 when the power is not off not only effectively reduces the contact area between the two and reduces friction, but also further reduces the friction generated by the rotational contact, thus extending the service life.

[0029] Example 3

[0030] Please see Figures 1-5 This utility model provides a technical solution:

[0031] Based on Example 2, a mechanical limiting structure is added to further improve the reliability of self-locking.

[0032] A clearance opening 11 is provided on one side of the fixed ring 8, and a synchronization block 12 is provided on the clearance opening 11. A limit ring 13 is provided on one side of the magnetic block 7. A uniformly distributed mounting groove 15 is provided in the synchronization block 12. A movable block 18 is slidably installed in the mounting groove 15. A return spring 17 is provided at one end of the movable block 18, and the other end of the return spring 17 is provided on the inner wall of the mounting groove 15. A positioning hole 14 that matches the shape of the movable block 18 is provided in the limit ring 13. A guide rod 16 is provided in the mounting groove 15, and the movable block 18 is inserted into the guide rod 16 and slidably installed. The movable block 18 is slidably installed, and the return spring 17 provides a return force for the movable block 18. The movable block 18 is slidably installed via the guide rod 16, ensuring that the movable block 18 moves smoothly and linearly within the mounting groove 15. When the adsorption assembly 5 is de-energized, the movable block 18, under the magnetic attraction of the magnetic block 7, overcomes the elastic force of the return spring 17 and quickly inserts into the positioning hole 14 of the limiting ring 13 along the guide rod 16, forming a mechanical limit and further enhancing the self-locking effect. When the adsorption assembly 5 is energized, the magnetic force of the magnetic block 7 weakens, and the movable block 18 quickly exits the positioning hole 14 under the action of the return spring 17, and the output shaft 4 returns to a free rotation state.

[0033] Working principle:

[0034] When the lifting motor needs to work, the driver 1 is powered on, and the control circuit sends an energizing signal to the adsorption component 5. The electromagnetic coil inside the adsorption component 5 is energized, which weakens the magnetic force of the magnetic block 7. At this time, the magnetic coupling component and the magnetic block 7 are no longer magnetically restricted, and the output shaft 4 rotates freely under the drive of the driver 1, driving the external load to achieve linear motion or lifting function.

[0035] When the lifting motor needs to stop working, the driver 1 stops driving the output shaft 4. At the same time, the control circuit sends a power-off signal to the adsorption assembly 5. After the adsorption assembly 5 is powered off, the permanent magnet of the magnetic block 7 is restored. Under the magnetic force of the magnetic block 7, the roller 10 on the extension rod 9 is attracted and closely adheres to the inner circumferential surface of the magnetic block 7, generating friction and preventing the output shaft 4 from rotating, thus achieving initial self-locking. At the same time, the moving block 18 on the synchronization block 12, under the attraction of the magnetic force of the magnetic block 7, overcomes the elastic force of the return spring 17 and moves along the guide rod 16 towards the limiting ring 13, and inserts into the positioning hole 14 to form a mechanical limit, further enhancing the self-locking effect and ensuring that the output shaft 4 remains stable in the stopped state, preventing it from sliding or falling due to external forces.

[0036] When the lifting motor needs to be restarted, the driver 1 is powered on, and the control circuit sends an energizing signal to the adsorption component 5. After the adsorption component 5 is powered on, the magnetic force of the magnetic block 7 is weakened. After the magnetic force of the magnetic block 7 is weakened, the roller 10 contacts the magnetic block 7 and the magnetic restriction is applied. At the same time, the moving block 18 exits the positioning hole 14 under the action of the reset spring 17, and the output shaft 4 returns to the free rotation state. The lifting motor can resume normal operation.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A lifting motor with a self-locking module, comprising a housing (2), wherein a driver (1) is disposed within the housing (2), and a mounting base (3) is disposed on the housing (2), characterized in that: The driver (1) is provided with an output shaft (4) at its output end. A self-locking component (6) is provided between the output shaft (4) and the housing (2). The self-locking component (6) includes an adsorption component (5) provided on the housing (2). A magnetic block (7) is provided inside the adsorption component (5). A fixing ring (8) is sleeved on the output shaft (4). A magnetic engagement component is provided on the fixing ring (8), and the magnetic engagement component and the magnetic block (7) are magnetically engaged.

2. The lifting motor with a self-locking module according to claim 1, characterized in that: The magnetic block (7) is configured as a ring.

3. The lifting motor with a self-locking module according to claim 1, characterized in that: The adsorption component (5) is configured to be de-energized.

4. The lifting motor with a self-locking module according to claim 1, characterized in that: The magnetic mating assembly includes extension rods (9) that are evenly distributed on a fixed ring (8), one end of which is provided with a roller (10), and the roller (10) is magnetically mated with the magnetic block (7).

5. The lifting motor with a self-locking module according to claim 1, characterized in that: The fixed ring (8) has a clearance opening (11) on one side, and a synchronization block (12) is provided on the clearance opening (11). A limit ring (13) is provided on one side of the magnetic block (7). The synchronization block (12) has a uniformly distributed mounting groove (15). A moving block (18) is slidably installed in the mounting groove (15). A reset spring (17) is provided at one end of the moving block (18), and the other end of the reset spring (17) is provided on the inner wall of the mounting groove (15). A positioning hole (14) that matches the shape of the moving block (18) is provided in the limit ring (13).

6. The lifting motor with a self-locking module according to claim 5, characterized in that: A guide rod (16) is provided in the mounting groove (15), and the guide rod (16) is inserted into the moving block (18) and slidably installed.

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