Thrust structure of motor rotor and actuator

Abstract

The utility model relates to the technical field of automobile electronic equipment, and discloses a thrust structure of a motor rotor and an actuator. The thrust structure of the motor rotor comprises a motor, a shell, a first gasket and a second gasket. The motor comprises a shell, a stator and a rotor, wherein the stator and the rotor are connected with the shell. The shell is provided with an installation space for containing the outer shell, a first containing space corresponding to one end of the rotating shaft and a second containing space corresponding to the other end of the rotating shaft. The first gasket is arranged in the first containing space, one side of the first gasket abuts against the shell, and the other side of the first gasket abuts against one end of the rotating shaft. The second gasket is arranged in the second containing space, one side of the second gasket abuts against the shell, and the other side of the second gasket abuts against the other end of the rotating shaft. According to the thrust structure of the motor rotor and the actuator provided by the invention, the stable operation of the motor can be ensured.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of automobile electronic equipment, in particular to a thrust structure of a motor rotor and an actuator. BACKGROUND

[0002] With the continuous development of industrial manufacturing technology, the automatic control field is also constantly innovating. Electronic equipment for realizing automatic control function is more and more widely applied to various types of mechatronic products. In the control system of different products, an actuator is usually used to drive the corresponding execution component to act.

[0003] The actuator generates power output through the motor to drive the execution component to realize the corresponding execution action. The stable operation of the motor affects the working performance of the actuator. Therefore, how to ensure the stable operation of the motor is an important problem. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide a thrust structure of a motor rotor and an actuator, which can be beneficial to ensure the stable operation of the motor.

[0005] To solve the above technical problems, the embodiment of the present application provides a thrust structure of a motor rotor. The thrust structure of the motor rotor comprises a motor, a shell, a first gasket and a second gasket. The motor comprises a shell, and a stator and a rotor connected with the shell, and the rotor comprises a rotating shaft protruding out of the shell at both ends. The shell is provided with a mounting space accommodating the shell, a first accommodating space corresponding to one end of the rotating shaft, and a second accommodating space corresponding to the other end of the rotating shaft. The first gasket is arranged in the first accommodating space, one side of the first gasket abuts against the shell, and the other side of the first gasket abuts against one end of the rotating shaft. The second gasket is arranged in the second accommodating space, one side of the second gasket abuts against the shell, and the other side of the second gasket abuts against the other end of the rotating shaft.

[0006] The embodiment of the present application also provides an actuator, which comprises the above-mentioned thrust structure of the motor rotor.

[0007] The thrust structure of the motor rotor and the actuator provided by the embodiment of the present application increase the gaskets at the end of the rotating shaft of the motor rotor. The gaskets comprise a first gasket at one end of the rotating shaft and a second gasket at the other end of the rotating shaft. The surfaces of the opposite sides of the first gasket and the second gasket respectively abut against the end of the rotating shaft and the surface of the shell. The arrangement of the gaskets can compensate for the gap between the rotating shaft and the shell, so that the motor runs more stably and the noise is suppressed. The gaskets can limit the position of the rotating shaft and reduce the amount of rotor movement. Thus, the normal operation of the motor is ensured.

[0008] In some embodiments, the housing surface is provided with opposite first and second walls, and opposite third and fourth walls, the first, second, third and fourth walls surrounding a first accommodating space on the housing surface. In this way, the accommodating space for mounting the first gasket can be formed by cooperation between the different extending walls.

[0009] In some embodiments, the first wall is adjacent to the outer shell, and the first wall is provided with a clearance area for the one end of the rotating shaft to pass through, and the second wall is arranged opposite the rotating shaft. In this way, the clearance area provided on the first wall adjacent to the outer shell facilitates the abutment of the first gasket on the rotating shaft.

[0010] In some embodiments, the first wall is provided with a cooperation surface and a clearance surface parallel to each other on the side close to the second wall, the cooperation surface is located on the side away from the rotating shaft, and the distance between the cooperation surface and the second wall is smaller than the distance between the clearance surface and the second wall. In this way, different regions of the first wall can form different distances with the second wall, which can facilitate the installation of the first gasket.

[0011] In some embodiments, the distance between the cooperation surface and the second wall is smaller than the thickness of the first gasket. In this way, a smaller distance can be provided in the axial direction of the accommodating space along the rotating shaft to realize the interference fit of the first gasket.

[0012] In some embodiments, the third wall and the fourth wall have a protruding height smaller than the protruding height of the first wall or the second wall. In this way, the extending walls with different protruding heights can be provided to facilitate the installation of the first gasket.

[0013] In some embodiments, the housing surface is provided with first and second extending parts, and the first and second extending parts surround a second accommodating space on the housing surface. In this way, the accommodating space for mounting the second gasket can be formed by cooperation between the different extending parts.

[0014] In some embodiments, the first and second extending parts include opposite first parts and second parts extending towards each other, and the second part of the first extending part and the second part of the second extending part form a gap for the other end of the rotating shaft to pass through. In this way, the second accommodating space can be formed more simply by the extending parts in the form of bends.

[0015] In some embodiments, the distance between the second part of the first extending part and the housing surface, and the distance between the second part of the second extending part and the housing surface are smaller than the thickness of the second gasket. In this way, a smaller distance can be provided in the axial direction of the accommodating space along the rotating shaft to realize the interference fit of the second gasket. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the drawings and are described herein in connection with these examples. These embodiments are not intended to limit the scope of the embodiments to these examples alone, but rather, these embodiments are intended to cover all possible modifications and equivalents falling within the scope of the embodiments. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the embodiments. In the drawings, like reference numerals designate corresponding parts throughout the several views.

[0017] Figure 1 is a schematic diagram of the internal structure of an actuator provided by some embodiments of the present application;

[0018] Figure 2 is a schematic diagram of the internal structure of an actuator provided by some embodiments of the present application;

[0019] Figure 3 is Figure 2 is a schematic diagram of the internal structure of an actuator provided by some embodiments of the present application;

[0020] Figure 4 is Figure 2 is a schematic diagram of the internal structure of an actuator provided by some embodiments of the present application; DETAILED DESCRIPTION

[0021] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are proposed in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments. The division of the following embodiments is for the convenience of description, and should not constitute any limitation on the specific embodiments of the present application, and the embodiments can be combined and referenced with each other without contradiction.

[0022] 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 to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the description and the claims of this application and the above description of drawings, the terms "comprising" and "having" and any variations thereof, are intended to cover not exclusively containing.

[0023] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0024] Actuators are crucial for controlling the motion of mechatronic products and are a key component of their control systems. Complex products like automobiles, which integrate numerous components, often utilize actuators to achieve motion control. Examples include damper actuators in automotive air conditioning systems, dimming actuators in automotive lighting systems, and window lift actuators. Actuators use motors to generate output power. During operation, the motors convert electrical energy into mechanical energy, which in turn drives the actuators to achieve the desired motion.

[0025] The proper operation of the motor impacts the performance of the actuator. Currently, the motor's rotor shaft in the actuator directly contacts the housing, impacting motor stability and causing shaft movement, which can generate vibration and noise that propagate outward. In the actuator, the motor's rotor shaft directly abuts the housing. Due to tolerances between the two, there is a gap between the two. As the shaft moves, the worm gear forces cause movement during forward and reverse rotation. Friction is also dissipated in the housing, leading to noise that is transmitted through the housing, impacting the motor's proper operation.

[0026] In order to ensure the normal operation of the motor, some embodiments of the present application provide a thrust structure for the motor rotor. A gasket is added to the end of the motor rotor shaft, and the gasket can be made of PTFE (Polytetrafluoroetylene). This is to solve the problem of rotor movement. The setting of the gasket can compensate for the gap between the shaft and the housing, making the motor operation more stable and suppressing noise transmission. The gasket can limit the position of the shaft and reduce the amount of rotor movement. This ensures the normal operation of the motor.

[0027] The following combination Figures 1 to 4 The thrust structure of the motor rotor provided by some embodiments of the present application is described.

[0028] like Figures 1 to 4 As shown, the thrust structure of the motor rotor provided in some embodiments of the present application includes a motor, a housing 11, a first gasket 12 and a second gasket 13. The motor includes a housing 21, and a stator and a rotor connected to the housing 21. The rotor includes a rotating shaft 22 with both ends extending out of the housing 21. The housing 11 is provided with an installation space 101 for accommodating the housing 21, a first accommodating space 102 corresponding to one end of the rotating shaft 22, and a second accommodating space 103 corresponding to the other end of the rotating shaft 22. The first gasket 12 is arranged in the first accommodating space 102, with one side of the first gasket 12 abutting against the housing 11, and the other side of the first gasket 12 abutting against one end of the rotating shaft 22. The second gasket 13 is arranged in the second accommodating space 103, with one side of the second gasket 13 abutting against the housing 11, and the other side of the second gasket 13 abutting against the other end of the rotating shaft 22.

[0029] The motor is a part of the actuator that generates power output. The housing 21 is a part of the motor that provides an assembly base for other components and plays a protective role. The stator of the motor excites the rotor to rotate under the action of the magnetic field, thereby outputting motion to the outside. The rotating shaft 22 of the rotor is a part that transmits power to the outside of the housing 21, and the two ends of the rotating shaft 22 respectively extend out of the housing 21. The end of the rotating shaft 22 can transmit power to the actuator in a suitable form through a transmission structure.

[0030] The shell 11 is a part of the actuator that mounts the motor and other components, and provides a mounting space 101 and an assembly base for the motor and other components. At the position where the motor is mounted, the shell 11 is provided with a mounting space 101 that accommodates the housing 21 of the motor. At the same time, at the end of the rotating shaft 22, the shell 11 is provided with an accommodation space that accommodates the gasket.

[0031] The first gasket 12 and the second gasket 13 are respectively arranged corresponding to the ends of the rotating shaft 22. The first gasket 12 can be arranged in the first accommodation space 102 of the shell 11 and is arranged between the end of the rotating shaft 22 in motion and the surface of the stationary shell 11. The second gasket 13 can be arranged in the second accommodation space 103 of the shell 11 and is arranged between the end of the rotating shaft 22 in motion and the surface of the stationary shell 11. By filling the gasket between the end of the rotating shaft 22 and the surface of the shell 11, the easy movement of the rotating shaft 22 can be prevented, thereby ensuring the stable operation of the motor.

[0032] The thrust structure of the motor rotor provided by some embodiments of the present application increases the gasket at the end of the rotating shaft 22 of the motor rotor. The gasket includes a first gasket 12 at one end of the rotating shaft 22 and a second gasket 13 at the other end of the rotating shaft 22. The surfaces of the opposite sides of the first gasket 12 and the second gasket 13 respectively abut the end of the rotating shaft 22 and the surface of the shell 11. The arrangement of the gasket can compensate for the gap between the rotating shaft 22 and the shell 11, so that the motor operates more stably and noise is suppressed. The gasket can limit the position of the rotating shaft 22 and reduce the amount of movement of the rotor, thereby ensuring the normal operation of the motor.

[0033] In some embodiments, the surface of the shell 11 is provided with opposite first and second walls 111 and 112, and opposite third and fourth walls 113 and 114, which form the first accommodation space 102 around the surface of the shell 11.

[0034] That is, the first accommodating space 102 can be formed by arranging different extension walls on a certain area of the surface of the shell 11. The different extension walls are arranged protruding on the surface of the shell 11 and are sequentially connected to form a closed surrounding space. The first wall 111 and the second wall 112 can limit the first gasket 12 in the thickness direction of the first gasket 12. The third wall 113 and the fourth wall 114 can limit the first gasket 12 in the vertical direction of the center line of the rotating shaft 22. By the cooperation between the different extension walls, the installation position of the first gasket 12 on the shell 11 can be effectively limited.

[0035] As shown in Figures 1 to 3 The first wall 111 can be adjacent to the shell 21 of the motor, and the first wall 111 is provided with a gap area 1111 through which one end of the rotating shaft 22 passes, and the second wall 112 is arranged opposite to the rotating shaft 22.

[0036] The extension direction of the first wall 111 is perpendicular to the center line of the rotating shaft 22, and the first wall 111 is located in the area close to the shell 21 of the motor. The top of the first wall 111 is provided with a gap area 1111, and one end of the rotating shaft 22 can pass through the gap area 1111 at the top of the first wall 111. The side surface of the first gasket 12 close to the first wall 111 can abut on the end surface of the rotating shaft 22, thereby preventing the end of the rotating shaft 22 from moving.

[0037] In addition, the side of the first wall 111 close to the second wall 112 can be provided with a cooperation surface 1112 and a gap surface 1113 parallel to each other, the cooperation surface 1112 is located away from the rotating shaft 22 on the side of the gap surface 1113, and the distance between the cooperation surface 1112 and the second wall 112 is less than the distance between the gap surface 1113 and the second wall 112.

[0038] The cooperation surface 1112 is the surface of the first wall 111 cooperating with the first gasket 12, and the gap surface 1113 is located in the top area of the first wall 111. The cooperation surface 1112 and the gap surface 1113 are arranged opposite to the second wall 112. Compared with the cooperation surface 1112, the gap surface 1113 has a greater distance from the second wall 112. That is, the gap surface 1113 is closer to the shell 21 of the motor, which can play a guiding and gap role when the first gasket 12 is installed, and is conducive to installing the first gasket 12 into the surrounding space formed by the different extension walls.

[0039] In some embodiments, the distance between the cooperation surface 1112 and the second wall 112 can be less than the thickness of the first gasket 12.

[0040] That is, the first gasket 12 can be installed in the surrounding space formed by the different extension walls in the form of interference fit. Thus, the installation stability of the first gasket 12 is ensured.

[0041] For the third wall 113 and the fourth wall 114, a distance greater than the size of the first gasket 12 can be provided to facilitate installation of the first gasket 12. At the same time, the installation position of the first gasket 12 can be limited.

[0042] In some embodiments, the protruding height of the third wall 113 and the fourth wall 114 can be less than the protruding height of the first wall 111 or the second wall 112.

[0043] By providing different protruding heights for different extension walls, the installation of the first gasket 12 can be facilitated. A guiding effect can be achieved when installing the first gasket 12.

[0044] In some embodiments, the surface of the housing 11 can be provided with a first extension 115 and a second extension 116, which form a second accommodating space 103 around the surface of the housing 11.

[0045] By the cooperation between different extensions, the accommodating space for installing the second gasket 13 can be formed on the surface of the housing 11 more simply.

[0046] As shown in Figure 1 and Figure 4 , the first extension 115 and the second extension 116 include oppositely arranged first portions 117 and second portions 118 extending towards each other, and the second portion 118 of the first extension 115 and the second portion 118 of the second extension 116 form a gap for the other end of the rotating shaft 22 to pass through.

[0047] The first extension 115 and the second extension 116 are arranged in a curved manner, have portions opposite to each other, and have portions opposite to the surface of the housing 11, and can form a semi-enclosed surrounding space on the surface of the housing 11. The setting form of the second accommodating space 103 can be simplified.

[0048] In some embodiments, the distance between the second portion 118 of the first extension 115 and the surface of the housing 11, and the distance between the second portion 118 of the second extension 116 and the surface of the housing 11 can be less than the thickness of the second gasket 13.

[0049] That is, the second gasket 13 can be installed in the surrounding space formed by different extensions in the form of interference fit. The installation stability of the second gasket 13 can be ensured.

[0050] For the first portion 117 of the first extension 115 and the first portion 117 of the second extension 116, a distance greater than the size of the second gasket 13 can be provided to facilitate installation of the second gasket 13. At the same time, the installation position of the second gasket 13 can be limited.

[0051] Some embodiments of the present application also provide an actuator, which comprises the thrust structure of the motor rotor as described above.

[0052] The actuator generates power output through the motor, and finally drives the execution component to realize the corresponding execution action. The setting of the gasket can compensate for the gap between the rotating shaft 22 and the shell 11, so that the motor runs more stably and inhibits noise transmission. The gasket can limit the position of the rotating shaft 22 and reduce the amount of rotor movement. Thus, the normal operation of the motor is ensured.

[0053] The actuator can be an actuator applied in various different control scenarios of products, for example, a damper actuator for controlling air conditioning in a car. The power generated by the motor can be transmitted through a transmission mechanism to output appropriate motion forms outwardly, so as to control the execution component to realize the corresponding action.

[0054] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for implementing the present application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A thrust structure for a motor rotor, characterized in that: The motor rotor thrust structure comprises: a motor including a housing, a stator connected to the housing, and a rotor including a rotating shaft protruding out of the housing at both ends; a housing provided with a mounting space for accommodating the housing, a first accommodating space corresponding to one end of the rotating shaft, and a second accommodating space corresponding to the other end of the rotating shaft; a first gasket arranged in the first accommodating space, one side of the first gasket abutting against the housing, and the other side of the first gasket abutting against one end of the rotating shaft; a second gasket arranged in the second accommodating space, one side of the second gasket abutting against the housing, and the other side of the second gasket abutting against the other end of the rotating shaft.

2. The motor rotor thrust structure according to claim 1, wherein: the housing surface is provided with opposite first and second walls, and opposite third and fourth walls, and the first, second, third, and fourth walls form the first accommodating space on the housing surface.

3. The motor rotor thrust structure according to claim 2, wherein: the first wall is adjacent to the housing, and the first wall is provided with a clearance area for the one end of the rotating shaft to pass through, and the second wall is opposite to the rotating shaft.

4. The motor rotor thrust structure according to claim 2, wherein: the first wall is provided with a matching surface and a clearance surface on the side close to the second wall, the matching surface is located on the side away from the rotating shaft of the clearance surface, and the distance between the matching surface and the second wall is smaller than the distance between the clearance surface and the second wall.

5. The motor rotor thrust structure according to claim 4, wherein: the distance between the matching surface and the second wall is smaller than the thickness of the first gasket.

6. The motor rotor thrust structure according to claim 2, wherein: the protruding height of the third wall and the fourth wall is smaller than the protruding height of the first wall or the second wall.

7. The motor rotor thrust structure according to claim 1, wherein: the housing surface is provided with a first extension and a second extension, and the first extension and the second extension form the second accommodating space on the housing surface.

8. The motor rotor thrust structure according to claim 7, wherein: the first extension and the second extension include opposite first parts and second parts extending towards each other, and the second part of the first extension and the second part of the second extension form a gap for the other end of the rotating shaft to pass through.

9. The motor rotor thrust structure according to claim 8, wherein: the distance between the second part of the first extension and the housing surface, and the distance between the second part of the second extension and the housing surface are smaller than the thickness of the second gasket.

10. An actuator, characterized by The motor rotor thrust structure according to any one of claims 1 to 9.

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