Rotating shaft and rotor connecting structure and motor
By setting a sealing element in the rotation and rotor connection structure of the motor, the problem of internal material leakage and external debris in the lack of sealing structures caused by the lack of sealing structure in the existing technology have been solved. The service life of the device.
Patent Information
- Application Number
- CN202421048756.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-14
Smart Images
Figure CN222423346U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a shaft and rotor connection structure and a motor. Background Art
[0002] A motor is a device that converts electrical energy into mechanical energy through the principle of electromagnetic induction. A motor usually consists of a stator (stationary part) and a rotor (rotating part). The magnetic field generated in the stator interacts with the conductor in the rotor to generate a rotational force that drives the rotor to rotate. Motors are widely used in various fields, including industry, home, transportation, etc., and are one of the indispensable and important equipment in modern society.
[0003] The rotating shaft is one of the essential components of the motor. The rotating shaft of the motor refers to the shaft used to support and rotate the rotor part of the motor, also known as the rotor shaft or rotating shaft. The rotating shaft is usually a cylindrical metal shaft, one end of which is connected to the rotor part, and the other end is connected to the fixed part of the motor through a rotating element or other structure. The structure in which the rotating shaft is connected to the rotor is generally called an outer rotor motor. The existing structure in which the rotating shaft is connected to the rotor generally does not have a sealing structure, which makes it easy for the internal materials of the motor to leak or external debris to enter the motor, affecting the stable operation of the motor. Utility Model Content
[0004] In order to solve the above problems, the utility model provides a first fixed connection part provided with a sealing element, which is used to achieve sealing between the first fixed connection part and the second fixed connection part. It can effectively prevent the leakage of lubricating oil or other substances, and can also prevent external liquid and dust from entering the interior, thereby ensuring the sealing performance of the connection part of the shaft and rotor connection structure and motor.
[0005] The technical solution adopted by the utility model is: a rotating shaft and rotor connection structure, including a rotating shaft and a rotor element, the rotating shaft includes a rotating connection part, a first fixed connection part and an assembly limit part; the rotor element is provided with a second fixed connection part, the first fixed connection part is fixedly connected to the second fixed connection part by interference fit; the first fixed connection part is provided with a sealing element so that one side of the assembly limit part abuts against one side of the rotor element, and the sealing element is used for sealing between the first fixed connection part and the second fixed connection part.
[0006] A further improvement to the above solution is that the outer diameter of the rotating connection part is smaller than the outer diameter of the first fixed connection part; and a pressing platform is provided between the rotating connection part and the first fixed connection part.
[0007] A further improvement to the above solution is that tooth blocks are evenly distributed on the outer circumference of the first fixed connection part, and the first fixed connection part is fixedly connected to the second fixed connection part through the tooth blocks.
[0008] A further improvement to the above solution is that a sealing groove is provided on the outer periphery of the first fixed connection portion, the sealing element is provided in the sealing groove, and the outer diameter of the sealing element is sealed against the inner wall of the second fixed connection portion.
[0009] A further improvement to the above solution is that the second fixed connection portion is provided with a concave connection ring, and the concave connection ring protrudes toward the rotating connection portion.
[0010] A further improvement to the above solution is that a right angle line is formed between the inner wall surface of the concave connecting ring and the lower surface of the rotor element.
[0011] A further improvement to the above solution is that the assembly limiting portion is provided with an abutment surface, and the abutment surface is used to abut against the lower surface of the rotor element.
[0012] A further improvement to the above solution is that the outer diameter of the rotor element is provided with an annular yoke portion, and the second fixed connection portion is located at the axial center of the yoke portion.
[0013] A motor comprises the above-mentioned rotating shaft and rotor connecting structure.
[0014] A further improvement to the above scheme is that the motor includes a base, a stator assembly and a rotor assembly, the base is provided with a rotation placement cavity, a bearing is installed in the rotation placement cavity, the rotation connection part can be rotatably connected to the bearing, the stator assembly is arranged on the outer periphery of the base, and the stator assembly is arranged on the rotor element and is arranged opposite to the stator assembly.
[0015] The beneficial effects of the utility model are:
[0016] Compared with the existing motor shaft and rotor connection structure, the utility model realizes the fixed connection between the first fixed connection part and the second fixed connection part through interference fit, and ensures the stability of the fixed connection between the rotating shaft and the stator element after connection. In addition, a sealing element is provided on the first fixed connection part, and the sealing element is used to seal between the first fixed connection part and the second fixed connection part. Thus, the structural sealing is ensured, and the inside of the motor can be protected.
[0017] The utility model realizes a stable connection between the rotating shaft and the rotor element through interference fit between the rotating connection part of the rotating shaft and the first fixed connection part and the second fixed connection part of the rotor element. This connection method ensures a close connection between the rotor element and the rotating shaft, and improves the stability and reliability of the overall structure.
[0018] In the utility model, the first fixed connection part is provided with a sealing element for realizing the sealing between the first fixed connection part and the second fixed connection part. This design can effectively prevent the leakage of lubricating oil or other substances, and can also prevent external liquid and dust from entering the interior, thereby ensuring the sealing performance of the connection part and extending the service life of the equipment.
[0019] In the utility model, the design of the assembly limiter enables one side of the rotating shaft to accurately abut against one side of the rotor element, thus simplifying the assembly process and improving the assembly efficiency. Meanwhile, the arrangement of the sealing element also provides better operating space and conditions for assembly.
[0020] The utility model helps to improve the working efficiency and stability of the equipment through stable and reliable connection, excellent sealing performance and convenient assembly method, making the equipment smoother and more reliable during operation. The utility model has the technical effects of stable and reliable connection, excellent sealing performance, convenient assembly, reduced wear and improved working efficiency, which provides a good guarantee for the performance and reliability of the equipment, and also improves the service life and operating efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a three-dimensional structural schematic diagram of the connection structure between the rotating shaft and the rotor of the utility model;
[0022] Figure 2 for Figure 1 A schematic front view of the connection structure between the central shaft and the rotor;
[0023] Figure 3 for Figure 2 Sectional view of AA in the middle;
[0024] Figure 4 for Figure 3 A is an enlarged schematic diagram;
[0025] Figure 5 This is the front view of the motor of the utility model;
[0026] Figure 6 for Figure 5 Cross-sectional view of BB.
[0027] Explanation of the accompanying drawings: rotating shaft 1, rotating connection part 11, clamping platform 111, first fixed connection part 12, sealing element 121, tooth block 122, sealing groove 123, assembly limit part 13, abutment surface 131, rotor element 2, second fixed connection part 21, concave connecting ring 211, yoke part 22, base 3, rotating mounting cavity 31, bearing 32, stator assembly 4, rotor assembly 5. DETAILED DESCRIPTION
[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0031] like Figure 1 to Figure 6 As shown, in one embodiment of the utility model, a shaft-rotor connection structure is involved, including a rotating shaft 1 and a rotor element 2, wherein the rotating shaft 1 includes a rotating connection portion 11, a first fixed connection portion 12 and an assembly limit portion 13; the rotor element 2 is provided with a second fixed connection portion 21, and the first fixed connection portion 12 is fixedly connected to the second fixed connection portion 21 by interference fit; the first fixed connection portion 12 is provided with a sealing element 121, so that one side of the assembly limit portion 13 abuts against one side of the rotor element 2, and the sealing element 121 is used to seal between the first fixed connection portion 12 and the second fixed connection portion 21. In this embodiment, the first fixed connection portion 12 and the second fixed connection portion 21 are fixedly connected by interference fit, and the fixed connection stability of the rotating shaft 1 and the stator element is ensured after the connection. In addition, a sealing element 121 is provided in the first fixed connection portion 12, and the sealing element 121 is used to seal between the first fixed connection portion 12 and the second fixed connection portion 21. Thus, the sealing of the structure is ensured, and the internal of the motor can be protected.
[0032] The above embodiment realizes a stable connection between the rotating shaft and the rotor element 2 by means of interference fit between the rotating connection part 11 and the first fixed connection part 12 of the rotating shaft 1 and the second fixed connection part 21 of the rotor element 2. This connection method ensures a close connection between the rotor element 2 and the rotating shaft 1, and improves the stability and reliability of the overall structure.
[0033] In the above embodiment, the first fixed connection part 12 is provided with a sealing element 121 for achieving sealing between the first fixed connection part 12 and the second fixed connection part 21. This design can effectively prevent the leakage of lubricating oil or other substances, and can also prevent external liquids and dust from entering the interior, thereby ensuring the sealing performance of the connection parts and extending the service life of the equipment.
[0034] In the above embodiment, the design of the assembly stopper 13 enables one side of the rotating shaft 1 to accurately abut against one side of the rotor element 2, which simplifies the assembly process and improves assembly efficiency. At the same time, the setting of the sealing element 121 also provides better operating space and conditions for assembly.
[0035] The above embodiments help to improve the working efficiency and stability of the equipment through stable and reliable connection, excellent sealing performance and convenient assembly method, making the equipment smoother and more reliable during operation. The utility model has the technical effects of stable and reliable connection, excellent sealing performance, convenient assembly, reduced wear and improved working efficiency, which provides a good guarantee for the performance and reliability of the equipment, and also improves the service life and operating efficiency of the equipment.
[0036] The outer diameter of the rotating connection part 11 is smaller than the outer diameter of the first fixed connection part 12; a pressing platform 111 is provided between the rotating connection part 11 and the first fixed connection part 12. In this embodiment, the outer diameter of the rotating connection part 11 is small, which is convenient for installing and connecting the bearing, and under the action of the pressing platform 111, the bearing is pressed and assembled during assembly to ensure assembly accuracy and stability.
[0037] The outer circumference of the first fixed connection part 12 is evenly distributed with tooth blocks 122, and the first fixed connection part 12 is fixedly connected to the second fixed connection part 21 through the tooth blocks 122. In this embodiment, the outer circumference of the first fixed connection part 12 is evenly distributed with tooth blocks 122, and the stability of the connection can be enhanced by the fixed connection between the tooth blocks 122 and the second fixed connection part 21. The tooth blocks 122 provide a larger contact area and a more uniform force distribution, effectively preventing loosening or misalignment of the connection part, and ensuring the firmness of the connection. The provision of the tooth blocks 122 can increase the load-bearing capacity of the connection part, making the connection more durable and reliable. In the connection between the motor shaft and the rotor, the larger load-bearing capacity can ensure that the equipment will not fail or break when the connection is running at high load, thereby improving the stability and safety of the equipment.
[0038] A sealing groove 123 is provided on the periphery of the first fixed connection part 12, and the sealing element 121 is provided in the sealing groove 123, and the outer diameter of the sealing element 121 is sealed against the inner wall of the second fixed connection part 21. In this embodiment, by providing a sealing groove 123 on the periphery of the first fixed connection part 12, and providing a sealing element 121 in the sealing groove 123, the outer diameter of the sealing element 121 is sealed against the inner wall of the second fixed connection part 21, and the design of the sealing structure is realized. This design can effectively prevent lubricating oil or other liquids from leaking from the connection part, improve the sealing performance of the connection structure, and protect the internal components from external influences. The sealing element 121 provided in the sealing groove 123 can effectively prevent dust, water vapor or other impurities from entering the connection part, avoiding pollution or corrosion to the motor shaft and rotor. This helps to extend the service life of the equipment and reduce the frequency of maintenance and replacement of parts.
[0039] The second fixed connection part 21 is provided with a concave connection ring 211, and the concave connection ring 211 protrudes toward the rotating connection part 11. Specifically, a right angle is formed between the inner wall surface of the concave connection ring 211 and the lower surface of the rotor element 2. In this embodiment, the second fixed connection part 21 is provided with a concave connection ring 211, so that the concave connection ring 211 protrudes toward the rotating connection part 11, which can enhance the stability of the connection. The concave connection ring 211 provides additional support and fixing, ensures a firm connection between the rotor element 2 and the rotating connection part 11, and effectively prevents loosening or falling off due to uneven force. The design of the concave connection ring 211 forms a right angle between the inner wall surface and the lower surface of the rotor element 2, and this shape can improve the transmission efficiency. The design of the right angle is conducive to reducing friction loss, improving the efficiency of energy transfer, and making the connection between the motor shaft and the rotor more stable and efficient. The design of the concave connection ring 211 not only enhances the connection stability and transmission efficiency, but also optimizes the transmission performance. By forming the contact between the inner wall surface of the right angle line and the lower surface of the rotor element 2, energy loss and wear can be reduced, and the durability and reliability of the connection part can be improved.
[0040] The assembly limit portion 13 is provided with an abutment surface 131, and the abutment surface 131 is used to abut against the lower surface of the rotor element 2. In this embodiment, the setting of the abutment surface 131 can ensure that the assembly limit portion 13 and the rotor element 2 are in the correct position and angle. Through the close contact between the abutment surface 131 and the lower surface of the rotor element 2, the accuracy and stability of the assembly can be guaranteed, and the occurrence of assembly deviation or wrong position can be avoided. The design of the abutment surface 131 helps to improve the accuracy and consistency of the assembly. Through the precise docking of the abutment surface 131 with the lower surface of the rotor element 2, the close fit between the assembly parts can be ensured, the gap and error in the assembly process can be reduced, and the overall assembly quality can be improved.
[0041] The outer diameter of the rotor element 2 is provided with an annular yoke portion 22, and the second fixed connection portion 21 is located at the axial center of the yoke portion 22. In this embodiment, by providing the annular yoke portion 22 on the outer diameter of the rotor element 2, the conduction path of the magnetic field can be optimized. As a part of the magnetic circuit, the yoke portion 22 can effectively guide the flow of the magnetic field, improve the transmission efficiency of the magnetic energy, and enhance the magnetic performance of the motor. Providing the second fixed connection portion 21 at the axial center position of the yoke portion 22 helps to enhance the magnetic coupling effect. By optimizing the position of the connection portion, the magnetic field can be more concentrated and evenly transmitted to the fixed connection portion, thereby improving the magnetic coupling effect between the rotor element 2 and the fixed connection portion and enhancing the transmission performance of the motor.
[0042] like Figure 1 to Figure 6 As shown, a motor includes a rotating shaft and a rotor connection structure. The motor includes a base 3, a stator assembly 4 and a rotor assembly 5. The base 3 is provided with a rotating placement cavity 31, a bearing 32 is installed in the rotating placement cavity 31, and the rotating connection part 11 is rotatably connected to the bearing 32. The stator assembly 4 is arranged on the outer periphery of the base 3, and the stator assembly 4 is arranged on the rotor element 2 and arranged opposite to the stator assembly 4. In this embodiment, a rotating placement cavity 31 is provided on the base 3 of the motor, and a bearing 32 is installed in the rotating placement cavity 31. The base 3 is the supporting structure of the motor, and the rotating placement cavity 31 is used to accommodate the bearing 32 to ensure that the rotating shaft can rotate smoothly. The stator assembly 4 is arranged on the outer periphery of the base 3 and is the fixed part of the motor. The stator assembly 4 usually includes components such as stator coils, which are used to generate a magnetic field and drive the rotor assembly 5 to move. The rotor assembly 5 is arranged on the rotor element 2 and arranged opposite to the stator assembly 4. The rotor assembly 5 is the rotating part of the motor, which is usually composed of components such as magnetic steel. The relative arrangement between the rotor assembly 5 and the stator assembly 4 forms a rotating structure of the motor, thereby realizing the normal operation of the motor.
[0043] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A shaft and rotor connection structure, characterized in that: It comprises a rotating shaft and a rotor element, wherein the rotating shaft comprises a rotating connection part, a first fixed connection part and an assembly limit part; the rotor element is provided with a second fixed connection part, and the first fixed connection part is fixedly connected to the second fixed connection part by interference fit; the first fixed connection part is provided with a sealing element so that one side of the assembly limit part abuts against one side of the rotor element, and the sealing element is used for sealing between the first fixed connection part and the second fixed connection part.
2. The shaft and rotor connection structure according to claim 1, characterized in that: The outer diameter of the rotating connection part is smaller than the outer diameter of the first fixed connection part; a pressing platform is arranged between the rotating connection part and the first fixed connection part.
3. The shaft and rotor connection structure according to claim 1, characterized in that: The outer circumference of the first fixed connection part is evenly distributed with tooth blocks, and the first fixed connection part is fixedly connected to the second fixed connection part through the tooth blocks.
4. The shaft and rotor connection structure according to claim 1, characterized in that: A sealing groove is arranged on the outer periphery of the first fixed connection part, the sealing element is arranged in the sealing groove, and the outer diameter of the sealing element is sealed against the inner wall of the second fixed connection part.
5. The shaft and rotor connection structure according to claim 1, characterized in that: The second fixed connection portion is provided with an inner concave connection ring, and the inner concave connection ring protrudes toward the rotating connection portion.
6. The shaft and rotor connection structure according to claim 5, characterized in that: A right angle line is formed between the inner wall surface of the concave connecting ring and the lower surface of the rotor element.
7. The shaft and rotor connection structure according to claim 1, characterized in that: The assembly limiting portion is provided with an abutting surface, and the abutting surface is used to abut against the lower surface of the rotor element.
8. The shaft and rotor connection structure according to claim 1, characterized in that: The outer diameter of the rotor element is provided with an annular yoke portion, and the second fixed connection portion is located at the axial center of the yoke portion.
9. A motor, characterized in that: The invention comprises the shaft and rotor connection structure as claimed in any one of claims 1 to 8.
10. The motor according to claim 9, characterized in that: The motor includes a base, a stator assembly and a rotor assembly. The base is provided with a rotation placement cavity, a bearing is installed in the rotation placement cavity, the rotation connection part is rotatably connected to the bearing, the stator assembly is arranged on the outer periphery of the base, and the stator assembly is arranged on the rotor element and opposite to the stator assembly.