Motor with self-locking performance
By adopting a layout of six springs in the motor, four of which are hard springs, forming a support surface, the problems of motor rotor imbalance and output torque fluctuations are solved, and the motor self-locking and smooth operation are achieved.
Patent Information
- Application Number
- CN202421508264.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The rotor is unbalanced during operation of existing motors, resulting in large positive pressure in the hard spring and small positive pressure in the soft spring, causing the damping rod to swing left and right, making sharp noises, and affecting the magnitude of the positive and negative output torque.
The arrangement of six springs is adopted, four of which are hard springs. The hard springs form a support surface for the support of the rotor, ensuring that the friction force generated when the motor rotates is relatively small and the fluctuations are small, achieving self-locking and smooth operation.
By forming a support surface, the motor has less friction when it rotates, easy to braking, and is relatively stable during operation, avoiding sound and ensuring stability of the front and reverse output torque.
Smart Images
Figure CN222802664U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor structures, and in particular to a motor with self-locking properties. Background Art
[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines. With the development of technology, there are many types of motors.
[0003] The current motors basically use four dampers, each with a 90° interval, with two hard springs and two soft springs, and the hard and soft springs are cross-distributed. However, during the operation of the motor, since the contact points of the two hard springs are in a straight line, the rotor is unbalanced when the motor is running. The positive pressure at the hard spring is large, and the positive pressure at the soft spring is small. When the motor is reversed, the damping rod will swing left and right, which will cause a sharp abnormal sound when the hard spring is switched.
[0004] At the same time, in terms of the forces acting on the four springs, the positive pressure of the hard spring is greater than that of the soft spring. When the motor rotates forward and reverse, the friction between the damping rod and the rotor end face is also different. Assuming that it starts from the hard spring, the friction fluctuates from maximum to minimum to maximum in a cycle, thereby affecting the magnitude of the positive and negative output torque.
[0005] Therefore, there is an urgent need for a motor that can avoid the problem of rotor imbalance when the motor is running and simultaneously avoid affecting the size of the positive and negative output torque. Utility Model Content
[0006] In order to avoid the problem of rotor imbalance during the operation of the motor, the present application provides a motor with self-locking properties.
[0007] The present application provides a self-locking motor, which adopts the following technical solution:
[0008] A self-locking motor comprises a body, a main shaft is passed through the body, and the main shaft and the body are rotatably connected via a bearing, a rotor is mounted on the main shaft, a stator is mounted on the inner wall of the body, a spring cover is inserted at one end of the body, six damping rods are evenly arranged circumferentially between the spring cover and one end of the rotor, soft springs are arranged between two of the damping rods that are opposite to each other and the spring cover, and hard springs are arranged between the remaining four damping rods and the spring cover.
[0009] By adopting the above technical solution, six springs are arranged, four of which are hard springs. The four hard springs form a supporting surface for the rotor, which is always equivalent to a supporting surface when the motor rotates. The friction force generated is relatively small and fluctuates less, so braking is easier to achieve. The setting of the supporting surface can also ensure that the motor runs smoothly without making any noise.
[0010] Preferably, the machine body comprises an upper cover and a lower cover, and the upper cover and the lower cover are fixedly connected by a first screw.
[0011] By adopting the above technical solution, the screw connection can ensure that the upper cover and the lower cover are tightly connected to form a stable structure. This connection method can maintain high reliability under various environmental conditions, such as high temperature, high humidity, vibration, etc.
[0012] Preferably, three first screws are provided in total and are evenly arranged along the circumference of the machine body.
[0013] By adopting the above technical solution, the stability between the upper cover and the lower cover is further improved, and the problem of the machine body loosening caused by damage to a single structure is avoided.
[0014] Preferably, six mounting holes are evenly opened on the top of the upper cover along the circumference of the rotor, and each of the damping rods is respectively arranged at one end of the corresponding mounting hole close to the rotor and abuts against one side of the rotor.
[0015] By adopting the above technical solution, the damping is arranged in the mounting hole, thereby further improving the stability during the damping operation.
[0016] Preferably, the upper cover is provided with a circular groove at the mounting hole, and the spring cover is arranged in the circular groove and abuts against the inner wall of the groove.
[0017] By adopting the above technical solution, the spring cover is installed on the upper cover through the circular groove, and the spring cover is embedded in the circular groove, which effectively improves the stability of the spring cover.
[0018] Preferably, the spring cover is fixed on the upper cover by means of a second screw, and there are two second screws in total, which are arranged opposite to each other.
[0019] By adopting the above technical solution, the two second screws arranged opposite to each other further improve the stability between the spring cover and the upper cover.
[0020] Preferably, a wire plug is fixedly provided on one side of the bottom of the lower cover, and the wire plug is made of silicone.
[0021] By adopting the above technical solutions, the waterproof and dustproof ability of the motor can be improved, the internal circuit can be protected, the safety can be improved, the installation and maintenance process can be simplified, the appearance of the motor can be enhanced, and the environmental adaptability of the motor can be improved. These benefits make the motor more reliable, stable and safe, and extend the service life of the motor.
[0022] Preferably, the damping rod is made of tetrafluoroethylene.
[0023] By adopting the above technical solutions, the damping rod has excellent wear resistance, strength and rigidity, impact resistance, chemical corrosion resistance, electrical insulation, processability and cost-effectiveness, etc. These advantages make the PTFE damping rod widely used in the field of motors and play an important role in improving motor performance and reducing costs.
[0024] In summary, the present application includes at least one of the following beneficial technical effects:
[0025] 1. By adopting the arrangement of six springs, four of which are hard springs, the four hard springs form a supporting surface for the rotor, which is always equivalent to a supporting surface when the motor rotates. The friction force generated is relatively small and has small fluctuations, making it easier to achieve braking. The setting of forming a supporting surface can also ensure that the motor runs relatively smoothly without making any noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is an axonometric diagram mainly showing the overall structure of the motor in this embodiment;
[0027] Figure 2 This is a top view mainly showing the motor structure of this embodiment;
[0028] Figure 3 for Figure 2 The cross-sectional view at AA in the middle mainly shows the internal structure of the motor.
[0029] Figure numerals: 1. upper cover; 2. lower cover; 3. main shaft; 4. bearing; 5. rotor; 6. stator; 7. spring cover; 8. damping rod; 9. hard spring; 10. soft spring; 11. first screw; 12. mounting hole; 13. circular groove; 14. second screw; 15. wire plug. DETAILED DESCRIPTION
[0030] The present application is further described in detail below in conjunction with the accompanying drawings.
[0031] In the related art, the motor basically adopts four dampers, each of which is distributed at an interval of 90°, with two hard springs 9 and two soft springs 10, and the hard and soft springs 10 are cross-distributed. However, during the operation of the motor, since the contact points of the two hard springs 9 are in a line, the rotor 5 is unbalanced when the motor is running, the positive pressure at the hard spring 9 is large, and the positive pressure at the soft spring 10 is small, which will cause the damping rod 8 to swing left and right when the motor is reversed, and then cause a sharp abnormal sound when the hard spring 9 is reversed.
[0032] The embodiment of the present application discloses a motor with self-locking property.
[0033] Reference Figure 1 The self-locking motor includes a body, which is composed of an upper cover 1 and a lower cover 2. The upper cover 1 and the lower cover 2 are fixed by a first screw 11. A main shaft 3 is passed through the shaft between the upper cover 1 and the lower cover 2. The two ends of the main shaft 3 are rotatably connected to the upper cover 1 and the lower cover 2 through bearings 4. There are three first screws 11 in total, and they are evenly arranged along the circumference of the body. A wire plug 15 is fixedly provided on one side of the bottom of the lower cover 2, and the material of the wire plug 15 can be silicone.
[0034] Reference Figure 2 and Figure 3 The upper cover 1 is provided with a circular groove 13, in which a spring cover 7 is arranged, and the spring cover 7 abuts against the inner wall of the groove. The spring cover 7 is provided with a threaded hole, in which a second screw 14 is threadedly connected, and the spring cover 7 is fixed to the upper cover 1 by the second screw 14.
[0035] Specifically, the upper cover 1 is provided with six mounting holes 12 in the circumferential direction between the spring cover 7 and the rotor 5, wherein each mounting hole 12 is provided with a damping rod 8, and one end of the damping rod 8 abuts against one side of the rotor 5. Soft springs 10 are provided in two corresponding mounting holes 12, and hard springs 9 are provided in the remaining four mounting holes 12, and both ends of the soft spring 10 and the hard spring 9 abut against the spring cover 7 and the damping rod 8, respectively. With the arrangement of six springs, four of which are hard springs 9, one hard spring 9 forms a supporting surface for the support of the rotor 5, and thus always acts as a supporting surface when the motor rotates, and thus the friction force generated is relatively small and has small fluctuations, making it easier to achieve braking, and the setting of forming a supporting surface can also ensure that the motor runs relatively smoothly without making any noise.
[0036] Further, the damping rod 8 may be made of tetrafluoroethylene, which can make the damping rod 8 have excellent wear resistance, strength and rigidity, impact resistance, chemical corrosion resistance, electrical insulation, processability and cost-effectiveness, etc. These advantages make the tetrafluoroethylene damping rod 8 widely used in the field of motors and play an important role in improving motor performance and reducing costs.
[0037] The implementation principle of a self-locking motor in an embodiment of the present application is as follows: by adopting an arrangement of six springs, four of which are hard springs 9, a hard spring 9 forms a support surface for the rotor 5, and thus is always equivalent to a support surface when the motor rotates, so that the friction force generated is relatively small and has less fluctuation, and braking is easier to achieve. In addition, the setting of forming a support surface can ensure that the motor runs relatively smoothly without making any noise.
[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A self-locking motor, comprising a body, a main shaft (3) passing through the body, and the main shaft (3) and the body are rotatably connected via a bearing (4), a rotor (5) is mounted on the main shaft (3), and a stator (6) is mounted on the inner wall of the body, characterized in that: A spring cover (7) is inserted into one end of the machine body, and six damping rods (8) are evenly arranged in the circumferential direction between the spring cover (7) and one end of the rotor (5), wherein soft springs (10) are arranged between two of the damping rods (8) arranged opposite to each other and the spring cover (7), and hard springs (9) are arranged between the remaining four damping rods (8) and the spring cover (7).
2. A self-locking motor according to claim 1, characterized in that: The machine body comprises an upper cover (1) and a lower cover (2), and the upper cover (1) and the lower cover (2) are fixedly connected by a first screw (11).
3. A self-locking motor according to claim 2, characterized in that: A total of three first screws (11) are provided and are evenly arranged along the circumference of the machine body.
4. The self-locking motor according to claim 2, characterized in that: Six mounting holes (12) are evenly formed on the top of the upper cover (1) along the circumference of the rotor (5), and each of the damping rods (8) is disposed at one end of the corresponding mounting hole (12) close to the rotor (5) and abuts against one side of the rotor (5).
5. The self-locking motor according to claim 4, characterized in that: The upper cover (1) is provided with a circular groove (13) at the mounting hole (12), and the spring cover (7) is arranged in the circular groove (13) and abuts against the inner wall of the groove.
6. The self-locking motor according to claim 5, characterized in that: The spring cover (7) is fixedly arranged on the upper cover (1) by means of second screws (14), and two second screws (14) are arranged in total, and the two second screws (14) are arranged opposite to each other.
7. The self-locking motor according to claim 2, characterized in that: A wire plug (15) is fixedly arranged on one side of the bottom of the lower cover (2), and the material of the wire plug (15) is silicone.
8. The self-locking motor according to claim 1, characterized in that: The material of the damping rod (8) is tetrafluoroethylene.