Motor assembly, suspension system and vehicle
By designing an output shaft and mating groove structure with an inclined connecting surface in the motor assembly, the problem of large clearance between the motor output shaft and the mating shaft is solved, and the response speed of the suspension system and the driving comfort of the vehicle are improved.
Patent Information
- Application Number
- CN202422585909.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-24
AI Technical Summary
In the prior art, there is a large gap between the output shaft of the motor and the mating shaft in the rotation direction, which results in a slow response speed of the suspension system.
A motor assembly is designed, in which an output shaft and a mating shaft are connected in the axial direction, one of the output shaft and the mating shaft is formed as a mating end, and the mating end is arranged in a mating groove. An inclined first connecting surface is formed on the outer peripheral wall of the mating end, which fits with the first mating surface on the inner peripheral wall of the mating groove and is connected by fasteners to reduce the gap in the rotation direction.
It improves the response speed of the suspension system, reduces noise, and enhances vehicle driving comfort.
Smart Images
Figure CN223363966U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a motor component, a suspension system and a vehicle. Background Art
[0002] With the development of vehicle technology, users have increasingly higher requirements for vehicle configuration. In some active suspension systems, electric motors are used as power sources to drive actuators. The motors usually output power to the outside through an output shaft. In related technologies, the gap between the output shaft of the motor and the mating shaft in the direction of rotation is large, which makes the response speed of the suspension system slow. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a motor assembly having a faster output response.
[0004] The utility model also provides a suspension system having the motor assembly.
[0005] The utility model also provides a vehicle with the suspension system.
[0006] According to the first aspect of the present invention, the motor assembly includes: a motor, the motor having an output shaft; a mating shaft, the mating shaft and the output shaft are connected in the axial direction, one of the output shaft and the mating shaft is formed as a mating end, the other of the output shaft and the mating shaft is formed with a mating groove, the mating end is arranged in the mating groove, a first connecting surface is formed on the outer peripheral wall of the mating end, in the direction from the mating end toward the bottom wall of the mating groove, the first connecting surface extends obliquely toward the direction of the rotation axis of the output shaft, a first mating surface is formed on the inner peripheral wall of the mating groove, and the first connecting surface is in contact with the first mating surface.
[0007] According to the motor assembly of the first aspect of the present invention, the gap between the output shaft and the mating shaft in the rotation direction during the motor output process can be reduced, thereby improving the response speed of the suspension system, reducing the noise generated by the mating shaft and the output shaft, and thus improving the driving comfort of the vehicle.
[0008] According to some embodiments of the present invention, the first connecting surface is a plane.
[0009] According to some embodiments of the present invention, there are multiple first connecting surfaces, and the multiple first connecting surfaces are arranged at intervals in the circumferential direction of the mating end.
[0010] According to some embodiments of the present invention, a second connecting surface is further formed on the outer peripheral wall of the mating end, and a second mating surface is further formed on the inner peripheral wall of the mating groove. The second connecting surface and the second mating surface are both planes parallel to the rotation axis of the output shaft, and the second connecting surface and the second mating surface are clearance-fitted.
[0011] According to some embodiments of the present invention, there are multiple first connecting surfaces, and there are multiple second connecting surfaces. In the circumferential direction of the mating end, the first connecting surfaces and the second connecting surfaces are alternately arranged.
[0012] According to some embodiments of the present invention, a third connecting surface is also formed on the outer peripheral wall of the mating end, and the third connecting surface is an arc cylindrical surface extending around the rotation axis of the output shaft. In the circumferential direction of the mating end, the third connecting surface is connected between the first connecting surface and the second connecting surface.
[0013] According to some embodiments of the present invention, the mating end is connected to the bottom wall of the mating groove via a fastener.
[0014] According to some embodiments of the present invention, the output shaft is formed as the mating end, the mating groove is formed on the mating shaft, a mating hole is formed on the bottom wall of the mating groove, a connecting hole is formed at one end of the output shaft connected to the mating shaft, an operating space connected to the mating hole is also formed on the mating shaft, the connecting hole is a threaded hole, the fastener is a fastening bolt, and the fastener passes through the mating hole and is fixed in the connecting hole.
[0015] The suspension system according to the second aspect of the present invention includes: the motor assembly according to the first aspect of the present invention.
[0016] According to the suspension system of the second aspect of the present invention, the response speed of the suspension system can be improved by providing the motor assembly according to the first aspect of the present invention.
[0017] A vehicle according to a third aspect of the present invention comprises: the suspension system according to the second aspect of the present invention.
[0018] According to the vehicle of the third aspect of the present invention, the driving experience can be improved by providing the suspension system according to the second aspect of the present invention.
[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1is a cross-sectional view of a motor assembly according to an embodiment of the present utility model;
[0021] Figure 2 yes Figure 1 An enlarged view of point A shown in FIG;
[0022] Figure 3 yes Figure 2 A cross-sectional view in the BB direction shown in FIG;
[0023] Figure 4 yes Figure 2 An enlarged view of point C shown in FIG;
[0024] Figure 5 is a partial cross-sectional view from another angle of the motor assembly according to an embodiment of the present utility model;
[0025] Figure 6 Schematic diagram of a motor and a mating shaft according to an embodiment of the present utility model.
[0026] Reference numerals:
[0027] 100. Motor assembly;
[0028] 1. Motor;
[0029] 10. Output shaft; 11. First connecting surface; 12. Second connecting surface; 13. Third connecting surface; 14. Connecting hole; 15. Housing; 16. Stator assembly; 17. Rotating shaft; 171. First bearing; 172. Second bearing; 18. Rotor magnet; 19. End cover;
[0030] 20. Actuator; 21. Mating shaft; 211. Mating groove; 2111. First mating surface; 2112. Second mating surface; 2113. Third mating surface; 212. Operating space; 22. Actuator housing; 23. Third bearing; 24. Fourth bearing;
[0031] 30. Fasteners. DETAILED DESCRIPTION
[0032] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0033] Reference below Figure 1-Figure 2 A motor assembly 100 according to an embodiment of the first aspect of the present invention is described.
[0034] like Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown, the motor assembly 100 according to the embodiment of the first aspect of the present utility model includes: a motor 1 and a mating shaft 21.
[0035] Specifically, the motor 1 has an output shaft 10, and the mating shaft 21 is connected to the output shaft 10 in the axial direction. One of the output shaft 10 and the mating shaft 21 is formed as a mating end, and the other of the output shaft 10 and the mating shaft 21 is formed with a mating groove 211. The mating end is arranged in the mating groove 211, and a first connecting surface 11 is formed on the outer peripheral wall of the mating end. In the direction of the mating end toward the bottom wall of the mating groove 211, the first connecting surface 11 extends obliquely toward the direction of the rotation axis of the output shaft 10, and a first mating surface 2111 is formed on the inner peripheral wall of the mating groove 211. The first connecting surface 11 is in contact with the first mating surface 2111.
[0036] That is to say, the first connecting surface 11 and the first mating surface 2111 are both wedge-shaped surfaces. During the assembly process, the mating end is gradually extended into the mating groove 211. When the first connecting surface 11 is in contact with the first mating surface 2111, since the first connecting surface 11 and the first mating surface 2111 are both wedge-shaped surfaces, when there is still a gap between the side of the mating end opposite to the first connecting surface 11 and the inner wall of the mating groove 211, the mating end can still continue to extend. When the side of the mating end opposite to the first connecting surface 11 abuts against the inner wall of the mating groove 211, the mating end is assembled in the mating groove 211.
[0037] During the operation of the motor 1, the mating shaft 21 can be the input shaft of the actuator 20, the mating shaft 21 can also be the input shaft of an intermediate transmission mechanism such as a reducer, and the mating shaft 21 can also be the input shaft of an intermediate connecting mechanism such as a coupling. When the motor 1 outputs power to the mating shaft 21, the first connecting surface 11 and the side opposite to the first connecting surface 11 on the mating end are both in contact with the mating groove 211, which can make the gap between the mating end and the mating groove 211 in the rotation direction smaller. As a result, the power of the motor 1 is transmitted to the mating shaft 21 more quickly, which can increase the response speed of the mating shaft 21, thereby increasing the response speed of the suspension system, and the torque variation range transmitted by the motor 1 to the mating shaft 21 is smaller, which can reduce the impact between the output shaft 10 and the mating shaft 21 and reduce the noise of the vehicle.
[0038] According to the motor assembly 100 of the embodiment of the first aspect of the present invention, the gap between the output shaft 10 and the mating shaft 21 in the rotation direction during the output of the motor 1 can be reduced, thereby improving the response speed of the suspension system, reducing the noise generated by the mating shaft 21 and the output shaft 10, and thus improving the driving comfort of the vehicle.
[0039] In some embodiments of the present invention, Figure 6As shown, the first connecting surface 11 is a plane. In this way, during the process of torque transmission between the first connecting surface 11 and the first mating surface 2111, the first connecting surface 11 and the first mating surface 2111 abut against each other, and relative displacement between the first connecting surface 11 and the first mating surface 2111 is unlikely to occur, thereby improving the reliability of the motor 1 during output.
[0040] In some embodiments of the present invention, Figure 3 As shown, there are multiple first connection surfaces 11, for example, two, three, or four first connection surfaces 11, and the multiple first connection surfaces 11 are spaced apart in the circumferential direction of the mating end. The first mating surfaces 2111 correspond one-to-one with the first connection surfaces 11. Thus, the multiple first connection surfaces 11 can reduce the gap between the mating end and the inner wall of the mating slot 211 at multiple locations in the circumferential direction of the mating end, thereby further improving the response speed of the suspension system.
[0041] In some embodiments of the present invention, Figure 3 、 Figure 5 and Figure 6 As shown, a second connecting surface 12 is also formed on the outer peripheral wall of the mating end, and a second mating surface 2112 is also formed on the inner peripheral wall of the mating groove 211. The second connecting surface 12 and the second mating surface 2112 are both planes parallel to the rotation axis of the output shaft 10, and the second connecting surface 12 and the second mating surface 2112 are clearance-fitted.
[0042] In this way, during the assembly process, the mating end can be more easily inserted into the mating groove 211, thereby reducing the difficulty of assembly and improving the assembly efficiency.
[0043] During the output process of the motor 1, it can be understood that the angle between the force of the output shaft 10 and the mating shaft 21 and the angle between the second connecting surface 12 and the second mating surface 2112 and the force are different from the angle between the first connecting surface 11 and the first mating surface 2111. During the output process of the motor 1, when the motor 1 vibrates or the axial connection between the output shaft 10 and the mating shaft 21 is loose, relative rotation may occur between the first connecting surface 11 and the first mating surface 2111. At this time, the interaction between the second connecting surface 12 and the second mating surface 2112 can transmit torque, thereby further improving the reliability of the output of the motor 1.
[0044] In some embodiments of the present invention, Figure 3 and Figure 6As shown, there are multiple first connection surfaces 11 and multiple second connection surfaces 12, and the first connection surfaces 11 and the second connection surfaces 12 are arranged alternately in the circumferential direction of the mating end. For example, there may be two, three, or four first connection surfaces 11 and two, three, or four second connection surfaces 12. This can make the structural distribution of the mating end and the mating slot 211 more uniform, thereby further improving the stability and reliability of the output of the motor 1.
[0045] In some embodiments of the present invention, Figure 6 As shown, a third connecting surface 13 is further formed on the outer peripheral wall of the mating end. The third connecting surface 13 is a circular arc cylindrical surface extending around the rotation axis of the output shaft 10. In the circumferential direction of the mating end, the third connecting surface 13 is connected between the first connecting surface 11 and the second connecting surface 12. A third mating surface 2113 is formed on the inner wall of the mating groove 211. The third mating surface 2113 is a circular arc cylindrical surface extending around the rotation axis of the output shaft 10. The third connecting surface 13 and the third mating surface 2113 are in contact with each other. It is understood that during assembly, the circular arc cylindrical surface can be rotated to a certain angle to ensure normal installation. By providing the third connecting surface 13 of the circular arc cylindrical surface, the difficulty of assembly can be further reduced.
[0046] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the mating end is connected to the bottom wall of the mating groove 211 by a fastener 30. The fastener 30 is convenient to connect and can further reduce the difficulty of operation. In addition, the fastener 30 can adapt to the connection of a larger gap range between the mating end and the bottom wall. During the assembly process, it is easy to adjust the gap between the mating end and the bottom wall of the mating groove 211 so that the first connection surface 11 and the first mating surface 2111 are in contact.
[0047] In some embodiments of the present invention, Figure 1 、 Figure 2 and Figure 4 As shown, the output shaft 10 is formed as a mating end, a mating groove 211 is formed on the mating shaft 21, a mating hole is formed on the bottom wall of the mating groove 211, a connecting hole 14 is formed at one end of the output shaft 10 connected to the mating shaft 21, and an operating space 212 connected to the mating hole is also formed on the mating shaft 21, the connecting hole 14 is a threaded hole, and the fastener 30 is a fastening bolt, which passes through the mating hole and is fixed in the connecting hole 14.
[0048] During the assembly process, the output shaft 10 is first inserted into the mating groove 211, and then the fastening bolt is extended from the mating hole into the mating groove 211 through the operating space 212, and the fastening bolt is tightened in the connecting hole 14, wherein the distance between the output shaft 10 and the bottom wall of the mating groove 211 is adjusted so that the first connecting surface 11 is in contact with the first mating surface 2111, and the opposite side of the first connecting surface 11 is in contact with the inner wall of the mating groove 211, and the position of the fastening bolt in the connecting hole 14 can be adjusted according to the position of the output shaft 10 in the mating groove 211.
[0049] By setting the fastener 30 as a fastening bolt, the position of the output shaft 10 in the matching groove 211 can be easily adjusted, and the fastening bolt has a high connection strength, which can easily meet the connection requirements of the motor 1.
[0050] Preferably, a bolt washer is further provided between the fastening bolt and the mating shaft 21 .
[0051] During product design, the distance δ between the output shaft 10 and the bottom wall of the matching groove 211 and the angle α between the first connecting surface 11 and the rotation axis of the output shaft 10 can be adjusted to meet more product design requirements.
[0052] According to some embodiments of the present invention, Figure 1 As shown, the motor 1 also includes: a housing 15, a stator assembly 16, a rotor assembly and an end cover 19. The housing 15 defines a accommodating cavity with one end open. The stator assembly 16 is fixed to the inner wall of the accommodating cavity. The rotor assembly includes a rotating shaft 17 and a rotor magnet 18. The rotor magnet 18 is arranged on the outer peripheral wall of the rotating shaft 17. The end cover 19 is arranged at the open opening of the housing 15. The end cover 19 and the side of the housing 15 away from the end cover 19 are both formed with mounting holes. The two ends of the rotating shaft 17 are respectively mounted between the two mounting holes through a first bearing 171 and a second bearing 172. The output shaft 10 is connected to the end of the rotating shaft 17 facing the end cover 19.
[0053] The motor assembly 100 also includes an actuator 20, which includes: an actuator housing 22, wherein the actuator housing 22 defines a mounting cavity with one end open, and the two ends of the mating shaft 21 are respectively mounted in the mounting cavity through a third bearing 23 and a fourth bearing 24, and the open mouth of the mounting cavity is snapped onto the end cover 19.
[0054] The suspension system according to the second embodiment of the present invention includes: the motor assembly 100 according to the first embodiment of the present invention.
[0055] According to the suspension system of the second embodiment of the present invention, the response speed can be improved by providing the motor assembly 100 according to the first embodiment of the present invention.
[0056] A vehicle according to an embodiment of the third aspect of the present invention includes: the suspension system according to the embodiment of the second aspect of the present invention.
[0057] The vehicle according to the embodiment of the third aspect of the present invention can improve the driving experience by providing the suspension system according to the embodiment of the second aspect of the present invention.
[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.
[0060] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A motor assembly, characterized in that: include: a motor having an output shaft; A mating shaft, wherein the mating shaft and the output shaft are connected in the axial direction, one of the output shaft and the mating shaft is formed as a mating end, and the other of the output shaft and the mating shaft is formed with a mating groove, and the mating end is arranged in the mating groove, A first connecting surface is formed on the outer peripheral wall of the mating end. In the direction from the mating end toward the bottom wall of the mating groove, the first connecting surface extends obliquely toward the rotation axis of the output shaft. A first mating surface is formed on the inner peripheral wall of the mating groove. The first connecting surface is in contact with the first mating surface.
2. The motor assembly according to claim 1, wherein: The first connecting surface is a plane.
3. The motor assembly according to claim 1, wherein: There are multiple first connecting surfaces, and the multiple first connecting surfaces are arranged at intervals in the circumferential direction of the mating end.
4. The motor assembly according to claim 1, wherein: A second connecting surface is also formed on the outer peripheral wall of the mating end, and a second mating surface is also formed on the inner peripheral wall of the mating groove. The second connecting surface and the second mating surface are both planes parallel to the rotation axis of the output shaft, and the second connecting surface and the second mating surface are clearance-fitted.
5. The motor assembly according to claim 4, characterized in that There are multiple first connecting surfaces and multiple second connecting surfaces, and the first connecting surfaces and the second connecting surfaces are alternately arranged in the circumferential direction of the mating end.
6. The motor assembly according to claim 4, characterized in that A third connecting surface is also formed on the outer peripheral wall of the mating end. The third connecting surface is an arc cylindrical surface extending around the rotation axis of the output shaft. In the circumferential direction of the mating end, the third connecting surface is connected between the first connecting surface and the second connecting surface.
7. The motor assembly according to any one of claims 1 to 6, characterized in that: The mating end is connected to the bottom wall of the mating groove via a fastener.
8. The motor assembly according to claim 7, wherein: The output shaft is formed as the mating end, the mating groove is formed on the mating shaft, a mating hole is formed on the bottom wall of the mating groove, a connecting hole is formed at one end of the output shaft connected to the mating shaft, an operating space connected to the mating hole is also formed on the mating shaft, the connecting hole is a threaded hole, the fastener is a fastening bolt, and the fastener passes through the mating hole and is fixed in the connecting hole.
9. A suspension system, characterized in that: include: The motor assembly according to any one of claims 1 to 8.
10. A vehicle, characterized in that: include: The suspension system of claim 9.