Rotating shaft, motor, electric drive assembly and vehicle

Abstract

The utility model relates to a rotating shaft, a motor, an electric drive assembly and a vehicle. The rotating shaft comprises a mounting shaft, a rotation stopping piece and a fastening piece. The rotation stopping piece is connected to the mounting shaft. And the rotation stopping piece and the mounting shaft are relatively static in the circumferential direction of the mounting shaft. The rotation stopping piece is provided with a first connecting part. The fastener is rotatably mounted to the mounting shaft. The fastener is provided with a second connecting part. The first connecting part is connected with the second connecting part, and the first connecting part and the second connecting part are relatively static in the circumferential direction of the mounting shaft. Therefore, the rotation stopping piece can be used for stopping rotation and limiting the fastening piece, so that connection looseness of the fastening piece is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular, to a rotating shaft, a motor, an electric drive assembly, and a vehicle. Background Art

[0002] In the related art, a fastener is connected to the rear end of a motor shaft to press and fix other components such as bearings on the motor shaft. However, the fastener may rotate due to vibration or other external forces, resulting in loosening of the connection between the fastener and the motor shaft. Based on the loosening of the fastener, other components assembled on the motor shaft may experience axial movement, leading to a decrease in motor efficiency or motor failure. Summary of the Utility Model

[0003] Embodiments of the present application provide a rotating shaft, a motor, an electric drive assembly, and a vehicle. A rotation prevention member is used to prevent the fastener from rotating along the installation shaft, thereby preventing loosening of the connection of the fastener.

[0004] To achieve the above object, according to the first aspect of the present application, a rotating shaft is provided, including:

[0005] An installation shaft;

[0006] A rotation prevention member, connected to the installation shaft, the rotation prevention member being relatively stationary with respect to the installation shaft in the circumferential direction of the installation shaft, and the rotation prevention member being configured with a first connection portion;

[0007] A fastener, rotatably mounted on the installation shaft, the fastener being configured with a second connection portion, the first connection portion being connected to the second connection portion, and the first connection portion and the second connection portion being relatively stationary in the circumferential direction of the installation shaft.

[0008] Optionally, the installation shaft has a threaded section, the fastener is threadedly connected to the threaded section, the threaded section is configured with a rotation prevention groove extending along its axial direction, the rotation prevention member is sleeved on the threaded section, and a first rotation prevention portion is configured on the inner ring of the rotation prevention member and is clamped in the rotation prevention groove.

[0009] Optionally, one of the first connection portion and the second connection portion includes a connection groove, and the other includes a bendable bending piece, and the bending piece is clamped in the connection groove.

[0010] Optionally, the first connection portion includes the bending piece, the second connection portion includes the connection groove, one side of the fastener facing the rotation prevention member is set as a conical surface, the bending piece is inclined, and the inclination direction of the bending piece is adapted to the inclination direction of the conical surface.

[0011] Optionally, the bent piece has a first state and a second state. In the first state, the inclination angle of the bent piece is A, and the inclination angle of the conical surface (32) is B, satisfying: A ≤ B. In the second state, the bent piece is clamped in the connecting groove.

[0012] Optionally, the rotating shaft further includes:

[0013] A rotating member;

[0014] Wherein, the mounting shaft has a first assembly section and a second assembly section. The outer diameter of the second assembly section is larger than that of the first assembly section to form a stepped surface between the first assembly section and the second assembly section. The rotating member is mounted on the first assembly section. One end of the rotating member abuts against the stepped surface, and the other end abuts against the fastener. The anti-rotation member is clamped between the fastener and the rotating member.

[0015] Optionally, the rotating member includes a gear. The inner peripheral surface of the gear is configured with a second anti-rotation portion, and the outer peripheral surface of the first assembly section is configured with a third anti-rotation portion. The second anti-rotation portion is connected to the third anti-rotation portion to limit the rotation of the gear along the mounting shaft.

[0016] Optionally, one of the second anti-rotation portion and the third anti-rotation portion includes a protruding portion, and the other includes a groove. Both the protruding portion and the groove extend along the axial direction of the rotating shaft, and the protruding portion is clamped in the groove.

[0017] Optionally, a seal is installed on the second assembly section. The seal is configured to seal the gap between the housing of the motor and the mounting shaft.

[0018] Optionally, the mounting shaft further has a third assembly section, and the third assembly section is connected to one end of the second assembly section away from the first assembly section. A bearing is installed on the third assembly section.

[0019] According to a second aspect of the present application, a motor is further provided, including the rotating shaft as described above.

[0020] According to a third aspect of the present application, an electric drive assembly is further provided, including the motor as described above.

[0021] According to a fourth aspect of the present application, a vehicle is further provided, including the electric drive assembly as described above.

[0022] In the rotating shaft, motor, electric drive assembly and vehicle according to the embodiments of the present application, by connecting a rotation stopping member to the mounting shaft so that the rotation stopping member and the mounting shaft remain relatively stationary in the circumferential direction of the mounting shaft, the rotation stopping member cannot rotate on the mounting shaft. After the fastener is rotatably mounted on the mounting shaft, the first connecting portion of the rotation stopping member and the second connecting portion of the fastener are connected. Based on the fact that the first connecting portion and the second connecting portion are relatively stationary in the circumferential direction of the mounting shaft, the fastener can be mounted on the mounting shaft relatively stationary in the circumferential direction. Thus, the rotation stopping member can be used to stop and limit the rotation of the fastener, thereby preventing the fastener from rotating around the mounting shaft and preventing the loosening of the connection of the fastener.

[0023] Other features and advantages of the present application will be described in detail in the following specific implementation section. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0025] In order to more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the drawings, in which the same reference numerals represent the same parts in the following description.

[0026] Figure 1 is an exploded view structural schematic diagram of the rotating shaft provided in the exemplary embodiment of the present disclosure;

[0027] Figure 2 is the front view of the rotating shaft provided in the exemplary embodiment of the present disclosure;

[0028] Figure 3 is Figure 2 the partial enlarged view at C in

[0029] Figure 4 is the front view of the rotation stopping member provided in the exemplary embodiment of the present disclosure;

[0030] Figure 5 is the front view of the fastener provided in the exemplary embodiment of the present disclosure.

[0031] Description of the Reference Numerals:

[0032] 1. Mounting shaft; 11. Threaded section; 111. Rotation stopping groove; 12. First assembly section; 121. Third rotation stopping portion; 13. Second assembly section; 14. Third assembly section;

[0033] 2. Rotation stopping member; 21. First connecting portion; 22. First rotation stopping portion;

[0034] 3. Fastener; 31. Second connecting part; 32. Tapered surface

[0035] 4. Rotating part; 41. Second anti-rotation part

[0036] 5. Seal

[0037] 6. Bearing Specific implementation manner

[0038] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0039] As Figures 1 to 5 shown, an embodiment of the present application provides a rotating shaft. The rotating shaft includes a mounting shaft 1, an anti-rotation member 2, and a fastener 3. The anti-rotation member 2 is connected to the mounting shaft 1. The anti-rotation member 2 and the mounting shaft 1 are relatively stationary in the circumferential direction of the mounting shaft 1. The anti-rotation member 2 is configured with a first connecting part 21. The fastener 3 is rotatably mounted on the mounting shaft 1. The fastener 3 is configured with a second connecting part 31. The first connecting part 21 is connected to the second connecting part 31, and the first connecting part 21 and the second connecting part 31 are relatively stationary in the circumferential direction of the mounting shaft 1.

[0040] In some embodiments, by connecting the anti-rotation member 2 to the mounting shaft 1, the anti-rotation member 2 and the mounting shaft 1 are kept relatively stationary in the circumferential direction of the mounting shaft 1, so that the anti-rotation member 2 cannot rotate on the mounting shaft 1. After the fastener 3 is rotatably mounted on the mounting shaft 1, the first connecting part 21 of the anti-rotation member 2 and the second connecting part 31 of the fastener 3 are connected. Based on the fact that the first connecting part 21 and the second connecting part 31 are relatively stationary in the circumferential direction of the mounting shaft 1, the fastener 3 can be mounted on the mounting shaft 1 relatively stationary in the circumferential direction. Thus, the anti-rotation member 2 can be used to stop and limit the rotation of the fastener 3, thereby preventing the fastener 3 from rotating around the mounting shaft 1 to prevent the connection of the fastener 3 from loosening.

[0041] It can be understood that, based on the fact that the fastener 3 is rotatably mounted on the mounting shaft 1, when the first connecting part 21 of the anti-rotation member 2 and the second connecting part 31 of the fastener 3 are connected, the fastener 3 is stopped and limited by the anti-rotation member 2 and cannot rotate. Thus, the fastener 3 cannot continue to be assembled forward or loosen backward, thereby ensuring the stability of the installation position of the fastener 3.

[0042] After the rotation prevention member 2 and the fastening member 3 are successively installed on the installation shaft 1, the fastening member 3 and the rotation prevention member 2 are also relatively stationary. That is, the rotation prevention member 2 will not move away from the fastening member 3 to prevent the separation of the first connection portion 21 and the second connection portion 31. To ensure the reliable connection between the fastening member 3 and the rotation prevention member 2, after the fastening member 3 presses and fixes the rotation prevention member 2, the first connection portion 21 and the second connection portion 31 can be connected.

[0043] Among them, an installation hole is formed on the rotation prevention member 2, and the installation shaft 1 passes through the installation hole to sleevingly install the rotation prevention member 2 on the installation shaft 1. The rotation prevention member 2 can be set as a thin sheet, and at this time, the rotation prevention member 2 can also be used as a washer on the installation shaft 1.

[0044] The rotation prevention member 2 and the installation shaft 1 being relatively stationary in the circumferential direction means that the rotation prevention member 2 cannot rotate along the installation shaft 1. It can be understood that the rotation prevention member 2 can move axially along the installation shaft 1 during installation, but cannot rotate on the installation shaft 1. The first connection portion 21 and the second connection portion 31 being relatively stationary in the circumferential direction of the installation shaft 1 means that the first connection portion 21 and the second connection portion 31 cannot rotate relative to each other around the installation shaft 1.

[0045] It can be understood that the fastening member 3 can be any structure that needs to rotate with the installation shaft 1 and is rotatably installed on the installation shaft 1. For example, the fastening member 3 can be a structure for fastening a bearing 6 or a gear transmission component on the installation shaft 1, or a structure for fastening the rotation prevention member 2.

[0046] Among them, rotatable installation means an installation method in which there may be a risk of circumferential relative rotation between the fastening member 3 and the installation shaft 1, such as an interference fit or a clearance fit between the fastening member 3 and the installation shaft 1. It should be noted that only the fastening member 3 rotatably installed on the installation shaft 1 needs to be provided with a rotation prevention member 2 to prevent rotation to maintain circumferential relative static with the installation shaft 1, and the fastening member 3 installed on the installation shaft 1 by a method without a risk of circumferential relative rotation such as an interference fit does not require a rotation prevention member 2 to achieve rotation prevention.

[0047] The rotatable installation is preferably an installation method by threaded connection, so that the fastening member 3 can be rotatably installed on the installation shaft 1 while fastening the corresponding component, or it can also be rotatably installed on the installation shaft 1 in a loose fit manner, and the rotation prevention member 2 is used to prevent rotation so that the fastening member 3 and the installation shaft 1 maintain circumferential relative static.

[0048] In some embodiments, the rotation prevention member 2 is sleeved on the installation shaft 1, and at this time, the rotation prevention member 2 is set as an annular member. Or, the rotation prevention member 2 can be set as a semi-circular structure, and the position of the rotation prevention member 2 is locked by the fastening member 3 after being connected to the installation shaft 1. Or, the rotation prevention member 2 is set as a square sheet structure, and the rotation prevention member 2 is clamped on the outer surface of the installation shaft 1 and the position is locked by the fastening member 3.

[0049] Among them, the rotating shaft in the embodiments of the present application includes a motor shaft, a transmission shaft, and other rotatable shafts.

[0050] As Figure 1 shown, in some embodiments, the mounting shaft 1 has a threaded section 11, the fastener 3 is threadedly connected to the threaded section 11, the threaded section 11 is configured with an anti-rotation groove 111 extending along its axial direction, the anti-rotation member 2 is sleeved on the threaded section 11, and a first anti-rotation portion 22 is configured on the inner ring of the anti-rotation member 2, and the first anti-rotation portion 22 is clamped in the anti-rotation groove 111.

[0051] It can be understood that the threaded section 11 has an external thread. The fastener 3 can be a fastening nut. The fastener 3 is threadedly installed on the threaded section 11 to realize the rotational installation of the fastener 3 on the mounting shaft 1. Based on the construction of the anti-rotation groove 111 extending along the axial direction on the threaded section 11, so that the first anti-rotation portion 22 on the inner ring of the anti-rotation member 2 is clamped in the anti-rotation groove 111, the cooperation of the anti-rotation groove 111 and the anti-rotation portion can be used to prevent the anti-rotation member 2 from rotating along the mounting shaft 1.

[0052] Among them, the first anti-rotation portion 22 can be slidably clamped in the anti-rotation groove 111, so that the anti-rotation member 2 can be sleeved on the threaded section 11 and axially slide on the threaded section 11 to achieve installation. The opposite sides of the first anti-rotation portion 22 can respectively abut against the groove walls on the opposite sides of the anti-rotation groove 111. Thus, by the abutment of the side of the first anti-rotation portion 22 against the groove wall surface of the anti-rotation groove 111, the rotation of the anti-rotation member 2 is restricted to ensure that the anti-rotation member 2 and the mounting shaft 1 are relatively stationary in the circumferential direction.

[0053] In some embodiments, the mounting shaft 1 may further have a mounting section. The mounting section is configured with an assembly groove arranged in a spiral shape, and the assembly groove can be a hemispherical groove. A convex block is arranged on the inner ring of the fastener 3, and the convex block can be set to be hemispherical. The convex block is slidably assembled in the assembly groove and can slide along the extending direction of the assembly groove, so that the fastener 3 can be rotationally installed on the mounting shaft 1. At this time, an anti-rotation groove 111 extending along its axial direction can be constructed on the mounting section, and a first anti-rotation portion 22 can be configured on the inner ring of the anti-rotation member 2. The anti-rotation member 2 is sleeved on the mounting section, and the first anti-rotation portion 22 is clamped in the anti-rotation groove 111. Similarly, the assembly between the first anti-rotation portion 22 and the anti-rotation groove 111 can be used to realize the rotation of the anti-rotation member 2 along the mounting shaft 1.

[0054] In some embodiments, one of the first connecting portion 21 and the second connecting portion 31 includes a connecting groove, and the other includes a bendable bending piece, and the bending piece is clamped in the connecting groove.

[0055] It can be understood that based on the bending piece being clamped in the connecting groove, the mutual fixation of the positions between the anti-rotation member 2 and the fastener 3 can be achieved. Among them, after the fastener 3 is rotated and installed to a preset position, the bending piece is then bent so that the bending piece is clamped in the connecting groove. At this time, the anti-rotation member 2 can be used to perform anti-rotation limit on the fastener 3 installed at the preset position, prevent the fastener 3 from loosening, and ensure the reliable connection of the fastener 3.

[0056] For example, the first connecting portion 21 is set as the connecting groove, and the second connecting portion 31 is set as the bending piece. At this time, after the fastener 3 is rotated and installed to the preset position, the bending piece on the fastener 3 is bent toward the direction of the anti-rotation member 2 and clamped in the connecting groove. Thus, the mutual fixation of the fastener 3 and the anti-rotation member 2 is achieved.

[0057] For example, the first connecting portion 21 is set as the bending piece, and the second connecting portion 31 is set as the connecting groove. At this time, after the fastener 3 is rotated and installed to the preset position, the bending piece on the anti-rotation member 2 is bent toward the direction of the fastener 3 and clamped in the connecting groove. Thus, the mutual fixation of the fastener 3 and the anti-rotation member 2 is achieved.

[0058] Based on the above design method of the bending piece and the connecting groove, the first connecting portion 21 is arranged on the outer ring of the anti-rotation member 2, and the second connecting portion 31 is arranged on the outer ring of the fastener 3. For example, the bending piece is integrally formed on the outer ring of the anti-rotation member 2, and the connecting portion is recessed on the outer ring of the fastener 3.

[0059] Among them, the surface of the bending piece can be coated with an anti-corrosion layer to prevent the bending piece from rusting. The thickness of the bending piece can be the same as the thickness of the anti-rotation member 2.

[0060] In some embodiments, one of the first connecting portion 21 and the second connecting portion 31 can be a card slot, and the other can be a flexible card block. The card slot can be set as a hemispherical slot, and the flexible card block is also set as a hemisphere. At this time, the first connecting portion 21 and the second connecting portion 31 are respectively located on the sides of the anti-rotation member 2 and the fastener 3 facing each other. When the fastener 3 is rotationally assembled to the preset position, the flexible card block is exactly clamped in the card slot. Thus, the fixed connection between the fastener 3 and the anti-rotation member 2 can be achieved to prevent the fastener 3 from loosening.

[0061] For example, a card slot is configured on the side of the anti-rotation member 2 facing the fastener 3, and a flexible card block is configured on the side of the fastener 3 facing the anti-rotation member 2. When the fastener 3 is rotationally assembled to the preset position, the flexible card block of the fastener 3 is exactly clamped in the card slot of the anti-rotation member 2 to achieve the mutual fixation of the fastener 3 and the anti-rotation member 2.

[0062] For example, one side of the anti-rotation member 2 facing the fastener 3 is configured with a flexible clamping block, and one side of the fastener 3 facing the anti-rotation member 2 is configured with a clamping groove. When the fastener 3 is rotationally assembled to a preset position, the clamping groove of the fastener 3 just clamps the flexible clamping block of the anti-rotation member 2 to realize the mutual fixation between the fastener 3 and the anti-rotation member 2.

[0063] Among them, the flexible clamping block can be deformed to a certain extent. When the fastener 3 is rotationally installed close to the anti-rotation member 2, the flexible clamping block can be deformed so that the fastener 3 can continue to be rotationally installed. After the fastener 3 is installed in the preset position, the flexible clamping block just corresponds to the position of the clamping groove. At this time, the flexible clamping block returns to its initial state based on its own deformation so that the flexible clamping block is completely clamped in the clamping groove.

[0064] As Figure 4 and Figure 5 shown, in some embodiments, the first connecting portion 21 includes a bent piece, and the second connecting portion 31 includes a connecting groove. One side of the fastener 3 facing the anti-rotation member 2 is set as a conical surface 32, the bent piece is obliquely arranged, and the inclination direction of the bent piece is adapted to the inclination direction of the conical surface 32.

[0065] It can be understood that after the fastener 3 is rotationally installed in the preset position, the bent piece on the anti-rotation member 2 is bent towards the direction of the fastener 3 and clamped in the connecting groove of the fastener 3. Thus, the mutual fixation between the fastener 3 and the anti-rotation member 2 is realized. Based on the inclined arrangement of the bent piece, it can prevent the bent piece from fitting the rotating member 4 and making it difficult to bend the bent piece. Corresponding to the inclined arrangement of the bent piece, one side of the fastener 3 facing the anti-rotation member 2 is set as the conical surface 32 to prevent interference between the bent piece and the fastener 3 when the fastener 3 is rotationally assembled.

[0066] Among them, at least two bent pieces can be arranged at intervals along the circumferential direction of the outer ring of the anti-rotation member 2. Correspondingly, at least two connecting grooves are also arranged at intervals along the circumferential direction of the outer ring of the fastener 3.

[0067] As Figure 2 and Figure 3 shown, in some embodiments, the bent piece has a first state and a second state. In the first state, the inclination angle of the bent piece is A, and the inclination angle of the conical surface 32 is B, satisfying: A≤B. In the second state, the bent piece is clamped in the connecting groove. Among them, the bent piece is adapted to be bent under an external force to switch from the first state to the second state.

[0068] It can be understood that when the fastener 3 is rotatably installed on the mounting shaft 1, the bent piece is in the first state. After the fastener 3 is rotatably installed to the preset position, the bent piece is bent under an external force to be clamped in the connecting groove. At this time, the bent piece is in the second state. Since the inclination angle A of the bent piece in the first state is less than or equal to the inclination angle B of the conical surface 32, when the fastener 3 abuts against the anti-rotation member 2, the bent piece is flush with the conical surface 32 of the fastener 3 or away from the conical surface 32. Thus, interference of the bent piece with the installation of the fastener 3 is prevented.

[0069] Preferably, the inclination angle A of the bent piece in the first state is less than the inclination angle B of the conical surface 32.

[0070] In some embodiments, the rotating shaft further includes a rotating member 4. The mounting shaft 1 has a first assembly section 12 and a second assembly section 13. The outer diameter of the second assembly section 13 is greater than the outer diameter of the first assembly section 12 to form a stepped surface between the first assembly section 12 and the second assembly section 13. Among them, the rotating member 4 is installed on the first assembly section 12. One end of the rotating member 4 abuts against the stepped surface, and the other end abuts against the fastener 3. The anti-rotation member 2 is clamped between the fastener 3 and the rotating member 4.

[0071] It can be understood that after the anti-rotation member 2 performs anti-rotation limit on the fastener 3, loosening of the connection of the fastener 3 after installation can be prevented. Thus, the rotating member 4 can be stably and reliably fixed on the mounting shaft 1, and axial movement of the rotating member 4 can be prevented.

[0072] When the fastener 3 is assembled on the threaded section 11, the fastener 3 can press against the rotating member 4 and the anti-rotation member 2 to fix the rotating member 4 to the stepped surface. Thus, the rotating member 4 is locked between the anti-rotation member 2 and the second assembly section 13. Thus, relative static in the axial direction between the rotating member 4 and the first assembly section 12 is achieved.

[0073] Among them, the first assembly section 12 can be integrally formed with the threaded section 11. The second assembly section 13 can be integrally formed with the first assembly section 12.

[0074] In some embodiments, the rotating member 4 can include components such as gears and inner bearing rings that need to rotate with the rotating shaft.

[0075] In some embodiments, the rotating member 4 includes a gear. A second anti-rotation portion 41 is configured on the inner circumferential surface of the gear. A third anti-rotation portion 121 is configured on the outer circumferential surface of the first assembly section 12. The second anti-rotation portion 41 is connected to the third anti-rotation portion 121 to limit the rotation of the gear along the mounting shaft 1.

[0076] It can be understood that the first assembly section 12 and the gear form a rotation stop limit through the second rotation stop portion 41 and the third rotation stop portion 121, so as to realize the fixed installation of the gear and prevent the gear from rotating along the mounting shaft 1. Thus, the gear can rotate with the mounting shaft 1, thereby transmitting power.

[0077] Based on the arrangement of the gear on the mounting shaft 1, this gear can directly serve as the reduction gear of the reducer. Thus, the reduction gear can be directly arranged on the rotating shaft, thereby eliminating the main shaft of the reducer. Based on the elimination of the main shaft of the reducer, the number of bearings 6 can be reduced, the transmission efficiency can be improved, the axial space can be reduced, and the production cost can be lowered.

[0078] In some embodiments, one of the second rotation stop portion 41 and the third rotation stop portion 121 includes a protruding portion, and the other includes a groove. Both the protruding portion and the groove extend along the axial direction of the rotating shaft, and the protruding portion is snap-fitted into the groove.

[0079] It can be understood that the axially arranged protruding portion and groove can be slidably snap-fitted to realize the axial sliding assembly of the rotating component 4 on the mounting shaft 1.

[0080] For example, the protruding portion and the groove can be a spline and a keyway respectively.

[0081] For example, the second rotation stop portion 41 is a protruding portion, and the third rotation stop portion 121 is a groove. At least two protruding portions are circumferentially spaced along the inner peripheral surface of the rotating component 4. At least two grooves are circumferentially spaced along the outer peripheral surface of the first assembly section 12. Based on the mutual cooperation of the at least two protruding portions and the at least two grooves, the relative static state of the rotating component 4 and the first assembly section 12 in the circumferential direction is realized.

[0082] For example, the second rotation stop portion 41 is a groove, and the third rotation stop portion 121 is a protruding portion. At least two grooves are circumferentially spaced along the inner peripheral surface of the rotating component 4. At least two grooves are circumferentially spaced along the outer peripheral surface of the first assembly section 12. Based on the mutual cooperation of the at least two protruding portions and the at least two grooves, the relative static state of the rotating component 4 and the first assembly section 12 in the circumferential direction is realized.

[0083] In some embodiments, a seal 5 is installed on the second assembly section 13, and the seal 5 is configured to seal the gap between the box body of the sealed motor and the mounting shaft 1.

[0084] It can be understood that the rotating shaft will be installed in the motor box body. The motor box body includes a front box body and a rear box body. The front box body serves as the motor cavity, and the rear box body serves as the reducer cavity. The rotating component 4 serves as the rotating component of the reducer and will be arranged in the rear box body. While the third assembly section 14 and the bearing 6 are arranged in the front box body. Thus, it is necessary to isolate the front box body and the rear box body through the seal 5.

[0085] Among them, the seal 5 can be set as an oil seal.

[0086] In some embodiments, the mounting shaft 1 further has a third assembly section 14, and the third assembly section 14 is connected to one end of the second assembly section 13 away from the first assembly section 12. A bearing 6 is mounted on the third assembly section 14.

[0087] The bearing 6 on the third assembly section 14 is configured to be mounted on the front housing so that the rotational mounting of the mounting shaft 1 is achieved through the bearing 6. Based on this rotating shaft, only two bearings 6 can be provided on the mounting shaft 1, reducing the number of bearings 6 used, improving the transmission efficiency, reducing the axial space, and lowering the cost.

[0088] Among them, the third assembly section 14 can be integrally formed with the second assembly section 13.

[0089] In a second aspect, an embodiment of the present application further provides a motor. The motor includes the rotating shaft as described in the foregoing embodiments. The motor has all the beneficial effects of the above-mentioned rotating shaft, and the present disclosure will not elaborate herein.

[0090] In a third aspect, an embodiment of the present application further provides an electric drive assembly. The electric drive assembly includes the motor as described in the foregoing embodiments. The electric drive assembly has all the beneficial effects of the above-mentioned motor, and the present disclosure will not elaborate herein.

[0091] In a fourth aspect, an embodiment of the present application further provides a vehicle. The vehicle includes the electric drive assembly as described in the foregoing embodiments. The vehicle has all the beneficial effects of the above-mentioned electric drive assembly, and the present disclosure will not elaborate herein.

[0092] The vehicle can be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present disclosure does not make specific limitations thereto.

[0093] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0094] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0095] The embodiments, implementation manners and related technical features of the present application can be combined and replaced with each other without conflict.

[0096] The above are only the preferred embodiments of the present application and do not impose any formal restrictions on the present application. However, any simple modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A rotating shaft, characterized in that: include: Install the shaft; A rotation stopper connected to the mounting shaft, the rotation stopper and the mounting shaft being relatively stationary in the circumferential direction of the mounting shaft, and the rotation stopper being configured with a first connecting portion; A fastener is rotatably mounted on the mounting shaft, wherein the fastener is configured with a second connection portion, the first connection portion is connected to the second connection portion, and the first connection portion and the second connection portion are relatively stationary in the circumferential direction of the mounting shaft.

2. The rotating shaft according to claim 1, characterized in that: The mounting shaft has a threaded section, the fastener is threadedly connected to the threaded section, the threaded section is configured with a stop groove extending along its axial direction, the stop member is sleeved on the threaded section, the inner ring of the stop member is configured with a first stop portion, and the first stop portion is clamped in the stop groove.

3. The rotating shaft according to claim 1, characterized in that: One of the first connecting portion and the second connecting portion includes a connecting groove, and the other includes a bendable bending piece, and the bending piece is clamped in the connecting groove.

4. The rotating shaft according to claim 3, characterized in that: The first connecting portion includes the bending piece, the second connecting portion includes the connecting groove, the fastener is arranged as a conical surface on the side facing the rotation-stopping member, the bending piece is arranged at an angle, and the inclination direction of the bending piece is adapted to the inclination direction of the conical surface.

5. The rotating shaft according to claim 4, characterized in that: The bending piece has a first state and a second state. In the first state, the inclination angle of the bending piece is A, and the inclination angle of the conical surface is B, satisfying: A≤B. In the second state, the bending piece is clamped in the connecting groove.

6. The rotating shaft according to claim 4, further comprising: Rotating parts; Wherein, the mounting shaft has a first assembly section and a second assembly section, the outer diameter of the second assembly section is larger than the outer diameter of the first assembly section, so as to form a step surface between the first assembly section and the second assembly section, wherein the rotating component is installed on the first assembly section, one end of the rotating component stops at the step surface, and the other end stops at the fastener, and the stopper is clamped between the fastener and the rotating component.

7. The rotating shaft according to claim 6, characterized in that: The rotating component includes a gear, the inner circumference of the gear is configured with a second anti-rotation portion, the outer circumference of the first assembly section is configured with a third anti-rotation portion, and the second anti-rotation portion is connected to the third anti-rotation portion to limit the gear from rotating along the installation axis.

8. The rotating shaft according to claim 7, characterized in that: One of the second anti-rotation portion and the third anti-rotation portion includes a protrusion, and the other includes a groove. Both the protrusion and the groove extend along the axial direction of the rotating shaft, and the protrusion is clamped in the groove.

9. The rotating shaft according to claim 6, characterized in that: A sealing member is installed on the second assembly section, and the sealing member is configured to seal a gap between a housing of the motor and the installation shaft.

10. The rotating shaft according to claim 6, characterized in that: The installation shaft further has a third assembly section, which is connected to an end of the second assembly section away from the first assembly section, wherein a bearing is installed on the third assembly section.

11. A motor, characterized in that: Comprising the rotating shaft according to any one of claims 1-10.

12. An electric drive assembly, characterized in that: Comprising the motor as claimed in claim 11.

13. A vehicle, characterized in that: Comprising the electric drive assembly as claimed in claim 12.

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