Motor, suspension assembly and vehicle
By setting bushings and rolling parts between the primary and secondary components of the motor, the problem of excessive friction between the stator and the mover in the motor is solved, and efficiency improvement and energy consumption reduction are achieved.
Patent Information
- Application Number
- CN202411329228.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-04-04
AI Technical Summary
The friction coefficient between the stator and the mover in existing motors is too large, resulting in an increase in thrust and tension, a decrease in efficiency and an increase in energy loss.
A bushing is provided between the primary and secondary components, and a rolling member is provided on the bushing to form rolling friction to reduce friction.
By reducing friction between primary and secondary components, the efficiency of the motor is improved, energy consumption is reduced, and service life is extended.
Smart Images
Figure CN119765773A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of vehicles, and in particular to a motor, a suspension component and a vehicle. Background Art
[0002] At present, sliding friction is used between the stator and the mover in the motor, which will cause the friction coefficient between the stator and the mover to be too large, thereby increasing the thrust and pull in the motor, thereby reducing the efficiency of the motor and increasing the energy loss of the motor. Summary of the invention
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a motor that can reduce the friction between the stator and the mover, thereby improving the efficiency of the motor, reducing energy consumption, and increasing the service life of the motor.
[0004] The present invention further provides a suspension assembly.
[0005] The present invention further provides a vehicle.
[0006] According to the motor of the present invention, it includes: a primary component, a secondary component and a first bearing, wherein the secondary component can move axially relative to the primary component, and the first bearing includes: a bushing and a rolling element, wherein the bushing is arranged between the primary component and the secondary component, and the rolling element can be rolled on the bushing.
[0007] According to the motor of the present invention, a bushing is provided between the primary component and the secondary component, and a rolling element is provided on the bushing. Such a configuration can reduce the friction between the primary component and the secondary component, thereby improving the efficiency of the motor and increasing the service life of the motor.
[0008] In some examples of the invention, the rolling element is in contact with the primary assembly and the secondary assembly.
[0009] In some examples of the present invention, the rolling element is movable relative to the bushing in a radial direction of the secondary assembly.
[0010] In some examples of the present invention, the rolling element is movable relative to the bushing along the axial direction of the secondary assembly.
[0011] In some examples of the present invention, the bushing is formed with a mounting hole, and the rolling element is mounted in the mounting hole and is clearance-matched with the mounting hole.
[0012] In some examples of the present invention, there are a plurality of rolling elements, and the plurality of rolling elements are spaced apart and distributed in the circumferential direction and / or axial direction of the bushing.
[0013] In some examples of the present invention, the primary component includes: a core shaft, which is provided with a hollow chamber; the secondary component includes: a guide rod, one end of which extends into the hollow chamber and passes through the first bearing; wherein the bushing is arranged between the guide rod and the core shaft, and the rolling element is in contact with the guide rod and the core shaft respectively.
[0014] In some examples of the present invention, the core shaft is provided with a first limiting structure and a second limiting structure, and the bushing is located between the first limiting structure and the second limiting structure.
[0015] In some examples of the present invention, the hollow chamber has a first end and a second end, and one end of the guide rod extends into the hollow chamber through the second end; the first limiting structure is located between the first end and the second end, and the second limiting structure is located at the second end.
[0016] In some examples of the present invention, the first limiting structure includes a limiting step.
[0017] In some examples of the present invention, the second limiting structure includes a limiting member, an inner circumference of the core shaft is provided with an assembly groove, and the limiting member is assembled in the assembly groove and partially protrudes from the assembly groove.
[0018] In some examples of the present invention, the secondary component further includes: a shell, the shell is sleeved on the primary component, and the guide rod is connected to the shell.
[0019] In some examples of the present invention, the motor further includes: a second bearing disposed between the housing and the core shaft.
[0020] In some examples of the present invention, the second bearing is a self-lubricating bearing.
[0021] In some examples of the present invention, the rolling element is a ball.
[0022] The suspension assembly according to the present invention comprises: the motor and the fork arm as described above, wherein the fork arm is connected to the secondary assembly.
[0023] A vehicle according to the present invention comprises: the suspension assembly described above.
[0024] Compared with the prior art, the present invention adopts a method of setting a bushing between the primary component and the secondary component, and setting a rolling element on the bushing. This setting can reduce the friction between the primary component and the secondary component, thereby improving the efficiency of the motor and increasing the service life of the motor.
[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0027] Figure 1 is a schematic structural diagram of a motor according to an embodiment of the present invention;
[0028] Figure 2 is a cross-sectional view of a motor according to an embodiment of the present invention;
[0029] Figure 3 yes Figure 2 Enlarged view of area A in the middle;
[0030] Figure 4 It is a structural schematic diagram of the first bearing.
[0031] Reference numerals:
[0032] 100. Motor;
[0033] 10. Primary assembly; 11. Mandrel; 111. Hollow chamber; 12. Limit step; 13. Limit member; 20. Secondary assembly; 21. Housing; 22. Guide rod; 23. Fork arm; 30. First bearing; 31. Bushing; 32. Rolling member; 33. Mounting hole; 40. Second bearing; 50. Magnet. DETAILED DESCRIPTION
[0034] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.
[0035] Reference below Figure 1-Figure 4 The motor 100 according to an embodiment of the present invention is described, and the motor 100 is applied to a vehicle, for example, a suspension motor.
[0036] like Figure 1-Figure 3 As shown, the motor 100 according to the present invention includes: a primary component 10, a secondary component 20 and a first bearing 30. The secondary component 20 can move along the axial direction of the secondary component 20 relative to the primary component 10. The first bearing 30 includes: a bushing 31 and a rolling element 32. The bushing 31 is arranged between the primary component 10 and the secondary component 20. The rolling element 32 can be rotatably arranged on the bushing 31 and contacts the primary component 10 and the secondary component 20 respectively.
[0037] It can be understood that the primary assembly 10, the secondary assembly 20 and the first bearing 30 constitute the main structure of the motor 100, the secondary assembly 20 can move relative to the primary assembly 10, and the secondary assembly 20 moves in the axial direction, so as to ensure the relative movement between the primary assembly 10 and the secondary assembly 20. For example, the primary assembly 10 is a stator assembly, the secondary assembly 20 is a mover assembly, and the mover assembly moves relative to the stator assembly.
[0038] The bushing 31 and the rolling element 32 constitute the main structure of the first bearing 30. The bushing 31 is located between the primary component 10 and the secondary component 20. This arrangement allows the bushing 31 to move with the secondary component 20 relative to the primary component 10, and also allows the bushing 31 to limit the primary component 10, thereby facilitating the axial movement of the primary component 10 relative to the secondary component 20, and further facilitating the linear relative movement between the primary component 10 and the secondary component 20.
[0039] Moreover, the rolling member 32 is arranged on the bushing 31 through a press-fitting process, and the rolling member 32 and the bushing 31 are clearance-fitted. Such an arrangement allows the rolling member 32 and the bushing 31 to move together relative to the primary component 10. The rolling member 32 is in contact with both the primary component 10 and the secondary component 20, thereby ensuring the stable output of thrust and tension of the motor 100.
[0040] Among them, the secondary component 20 forms rolling friction with the primary component 10 through the bushing 31 and the rolling element 32. This setting can reduce the friction between the primary component 10 and the secondary component 20, thereby improving the efficiency of the motor 100 and reducing the energy consumption of the motor 100, and can also extend the service life of the motor 100 and ensure the performance of the motor 100.
[0041] Therefore, by setting a bushing 31 between the primary component 10 and the secondary component 20, and setting a rolling element 32 on the bushing 31, such a setting can reduce the friction between the primary component 10 and the secondary component 20, thereby improving the efficiency of the motor 100 and increasing the service life of the motor 100.
[0042] In particular, if Figure 2 and Figure 3As shown, the rolling member 32 can move radially relative to the bushing 31 along the secondary component 20. This arrangement can connect the rolling member 32 and the bushing 31 into a whole. The rolling member 32 and the bushing 31 move together relative to the secondary component 20, and the rolling member 32 and the bushing 31 are located between the secondary component 20 and the primary component 10, so that the rolling member 32 and the bushing 31 can limit the secondary component 20, and the primary component 10 and the secondary component 20 can have a certain amount of movement in the radial direction, thereby ensuring the concentricity between the primary component 10 and the secondary component 20, avoiding eccentricity between the secondary component 20 and the primary component 10, and preventing the motor 100 from generating unilateral magnetic pull.
[0043] Likewise, if Figure 2 and 3 As shown, the rolling element 32 can move axially relative to the bushing 31 along the secondary component 20. This arrangement allows the rolling element 32 and the bushing 31 to move together relative to the secondary component 20, and the rolling element 32 and the bushing 31 are located between the secondary component 20 and the primary component 10, so that the rolling element 32 and the bushing 31 can limit the secondary component 20, and can also allow the primary component 10 and the secondary component 20 to have a certain amount of movement in the axial direction, thereby ensuring the concentricity between the primary component 10 and the secondary component 20, and improving the efficiency of the motor 100.
[0044] Among them, Figure 4 As shown, the bushing 31 is formed with a mounting hole 33, and the rolling element 32 is mounted in the mounting hole 33 and is clearance-matched with the mounting hole 33. It can be understood that the bushing 31 is provided with a plurality of mounting holes 33, and the mounting holes 33 can limit the rolling element 32, so that the rolling element 32 is conveniently arranged on the bushing 31 through the mounting holes 33, and then the rolling element 32 and the bushing 31 can be connected into a whole, and the rolling element 32 and the mounting holes 33 are clearance-matched, so that the rolling element 32 and the bushing 31 can move together relative to the primary component 10, thereby reducing the friction between the primary component 10 and the secondary component 20, and then improving the efficiency of the motor 100.
[0045] Alternatively, if Figure 3 and Figure 4As shown, there are multiple rolling elements 32, and the multiple rolling elements 32 are spaced apart in the circumferential and axial directions of the bushing 31. That is to say, the multiple rolling elements 32 correspond to the multiple mounting holes 33 one by one, so that the multiple rolling elements 32 can be evenly distributed along the axial and radial directions of the bushing 31, so that the primary component 10 and the secondary component 20 can have a certain amount of movement in the axial and radial directions, thereby ensuring the centering between the primary component 10 and the secondary component 20, and preventing the motor 100 from generating unilateral magnetic pulling force. For example, 16 rolling elements 32 are evenly spaced apart in the radial direction, and 6 layers are evenly spaced apart in the axial direction, that is, 96 rolling elements 32 are arranged on the bushing 31, so that the friction between the primary component 10 and the secondary component 20 can be reduced, thereby improving the efficiency of the motor 100.
[0046] In addition, if Figure 2 and Figure 3 As shown, the primary component 10 includes: a core shaft 11, and the core shaft 11 is provided with a hollow chamber 111; the secondary component 20 includes: a guide rod 22, one end of the guide rod 22 extends into the hollow chamber 111 and passes through a first bearing 30; wherein, a bushing 31 is arranged between the guide rod 22 and the core shaft 11, and a rolling element 32 is in contact with the guide rod 22 and the core shaft 11 respectively.
[0047] It can be understood that the core shaft 11 constitutes the main structure of the primary component 10, and a hollow chamber 111 is formed in the core shaft 11, so that the hollow chamber 111 can provide movement space for other components, thereby improving the movement coordination effect of the primary component 10. The secondary component 20 also includes a shell 21, and the shell 21 and the guide rod 22 constitute the main structure of the secondary component 20. The shell 21 is sleeved on the primary component 10, so that the shell 21 can protect the primary component 10, thereby extending the service life of the primary component 10. The guide rod 22 is connected to one end of the shell 21, so that the guide rod 22 and the shell 21 can move together, and the guide rod 22 can move together. One end of the rod 22 is passed through the hollow chamber 111, so that the guide rod 22 can move linearly relative to the core shaft 11, and the guide rod 22 is passed through the first bearing 30, so that the first bearing 30 can reduce the friction between the guide rod 22 and the core shaft 11, the bushing 31 is located between the guide rod 22 and the core shaft 11, and the rolling element 32 is fitted between the outer surface of the guide rod 22 and the inner surface of the core shaft 11. This arrangement can reduce the friction between the core shaft 11 and the guide rod 22, thereby facilitating the axial movement of the secondary component 20 relative to the primary component 10, thereby improving the efficiency of the motor 100 and increasing the service life of the motor 100.
[0048] In particular, if Figure 2 and Figure 3As shown, the bushing 31 can move axially along the secondary component 20 relative to the core shaft 11 and the guide rod 22 through the rolling element 32. This arrangement allows the rolling element 32 and the bushing 31 to move together relative to the core shaft 11 and the guide rod 22, and the rolling element 32 and the bushing 31 are located between the core shaft 11 and the guide rod 22, so that the rolling element 32 and the bushing 31 can limit the core shaft 11 and the guide rod 22, and can also allow the primary component 10 and the secondary component 20 to have a certain amount of movement in the axial direction, thereby ensuring the concentricity between the primary component 10 and the secondary component 20, and improving the efficiency of the motor 100.
[0049] The mandrel 11 is provided with a first limiting structure and a second limiting structure, and the bushing 31 is located between the first limiting structure and the second limiting structure. In other words, the mandrel 11 can be provided with two limiting structures, namely the first limiting structure and the second limiting structure, which limit the bushing 31 on both sides of the bushing 31, thereby preventing the bushing 31 from coming out of the mandrel 11, and preventing the bushing 31 from moving too far relative to the mandrel 11, resulting in misalignment between it and the guide rod 22.
[0050] like Figure 2 and Figure 3 As shown, the hollow chamber 111 has a first end and a second end, one end of the guide rod 22 extends into the hollow chamber 111 through the second end, the first limiting structure is located between the first end and the second end, and the second limiting structure is located at the second end. In other words, the first limiting structure is located inside the hollow chamber 111, for example, it can be located in the middle area of the length direction of the hollow chamber 111, and the second limiting structure is located at the second end of the hollow chamber 111, so that the first limiting structure and the second limiting structure can define a moving area of the bushing 31 in the hollow chamber 111, and when it moves to the extreme position, it cooperates with the first limiting structure or the second limiting structure at the extreme position, so that the core shaft 11 effectively limits the position of the bushing 31.
[0051] Among them, Figure 2 As shown, the first limiting structure is configured as a limiting step 12, which is formed on the inner circumference of the core shaft 11, that is, on the inner circumference of the hollow chamber 111. It can be understood that the limiting step 12 is located on the inner circumference of the core shaft 11, and such a setting enables the limiting step 12 to limit the axial movement path of the upper end of the bushing 31, thereby facilitating the movement of the guide rod 22 relative to the core shaft 11.
[0052] In addition, if Figure 3As shown, the second limiting structure includes a limiting member 13, and the inner circumference of the core shaft 11 is provided with an assembly groove, and the limiting member 13 is assembled in the assembly groove and partially protrudes from the assembly groove. In other words, the limiting member 13 is located at the axial lower end of the core shaft 11, and the inner circumference of the core shaft 11 is provided with an assembly grass, a part of the limiting member 13 is arranged in the assembly groove, and the other part protrudes from the inner surface of the core shaft 11. Such an arrangement enables the limiting member 13 to limit the axial movement path of the bushing 31, thereby facilitating the movement of the guide rod 22 relative to the core shaft 11.
[0053] In addition, if Figure 2 As shown, the motor 100 further includes: a second bearing 40, which is disposed between the housing 21 and the spindle 11. That is, the second bearing 40 is located above the first bearing 30, and the second bearing 40 is located between the housing 21 and the spindle 11, thereby reducing the friction between the housing 21 and the spindle 11, thereby improving the efficiency of the motor 100. For example, the second bearing 40 is a rolling bearing or a sliding bearing, which can reduce the friction between the housing 21 and the spindle 11.
[0054] Optionally, the second bearing 40 is a self-lubricating bearing and the rolling element 32 is a ball. The self-lubricating bearing can be a bearing made of graphite or a coating such as molybdenum disulfide MoS2, graphite fluoride (CF) and polytetrafluoroethylene (PTFE). The second bearing 40 constructed in this way can maintain good lubrication without the need for external addition of lubricating grease, and has the advantages of reducing friction loss, reducing noise, improving work efficiency and reducing maintenance costs. The ball can easily fit on the inner surface of the core shaft 11 and the outer surface of the guide rod 22, thereby increasing the wear resistance between the shell 21 and the core shaft 11, and can reduce the friction between the core shaft 11 and the guide rod 22.
[0055] In addition, if Figure 1 and Figure 2 As shown, a magnet 50 is arranged on the shell 21. The magnet 50 is a rare earth permanent magnet material, and the magnet 50 is interference fit with the shell 21, so that the magnet 50 can generate a stable magnetic field, so that the shell 21, the guide rod 22 and the fork arm 23 can make a linear reciprocating motion relative to the core shaft 11, thereby ensuring the performance of the motor 100.
[0056] The suspension assembly according to the present invention comprises: the motor 100 and the fork arm 23 of the above embodiment, and the fork arm 23 is connected to the secondary assembly 20. It can be understood that the fork arm 23 is located at the lower end of the housing 21, and the lower end of the guide rod 22 is connected to the fork arm 23. When the guide rod 22 moves relative to the spindle 11, the housing 21 and the fork arm 23 also move accordingly, thereby ensuring the performance of the motor 100. For example, the guide rod 22 and the fork arm 23 are connected by bolts, and the housing 21 and the fork arm 23 are also connected by bolts, so that the guide rod 22, the fork arm 23 and the housing 21 can move together relative to the primary assembly 10.
[0057] The vehicle according to the present invention comprises: the suspension assembly of the above embodiment. By arranging a bushing 31 between the primary assembly 10 and the secondary assembly 20, and arranging a rolling element 32 on the bushing 31, the friction between the primary assembly 10 and the secondary assembly 20 can be reduced, and the secondary assembly 20 moves axially relative to the primary assembly 10, which can not only avoid eccentricity between the secondary assembly 20 and the primary assembly 10, but also prevent the motor 100 from generating unilateral magnetic pulling force, thereby improving the efficiency of the motor 100 and increasing the service life of the motor 100.
[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 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0059] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. In the description of the present invention, a first feature "above", "above" and "above" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature.
[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 representation of the above terms does not necessarily refer to the same embodiment or example.
[0061] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A motor (100), characterized in that: include: Primary component (10); A secondary component (20), wherein the secondary component (20) is movable relative to the primary component (10) along the axial direction of the secondary component (20); A first bearing (30), the first bearing (30) comprising: a bushing (31) and a rolling element (32), the bushing (31) being arranged between the primary component (10) and the secondary component (20), and the rolling element (32) being rollably arranged on the bushing (31).
2. The electric machine (100) according to claim 1, characterized in that The rolling element (32) is in contact with the primary assembly (10) and the secondary assembly (20).
3. The electric machine (100) according to claim 1, characterized in that The rolling element (32) is movable relative to the bushing (31) in the radial direction of the secondary assembly (20).
4. The electric machine (100) according to claim 1, characterized in that The rolling element (32) is movable relative to the bushing (31) along the axial direction of the secondary assembly (20).
5. The electric machine (100) according to claim 3 or 4, characterized in that: The bushing (31) is formed with a mounting hole (33), and the rolling element (32) is mounted in the mounting hole (33) and is clearance-matched with the mounting hole (33).
6. The electric machine (100) according to claim 1, characterized in that There are a plurality of rolling elements (32), and the plurality of rolling elements (32) are distributed at intervals in the circumferential direction and / or axial direction of the bushing (31).
7. The electric machine (100) according to claim 1, characterized in that The primary component (10) comprises: A mandrel (11), wherein the mandrel (11) is provided with a hollow chamber (111); The secondary assembly (20) comprises: A guide rod (22), one end of the guide rod (22) extending into the hollow chamber (111) and passing through the first bearing (30); The bushing (31) is arranged between the guide rod (22) and the core shaft (11), and the rolling element (32) is in contact with the guide rod (22) and the core shaft (11) respectively.
8. The electric machine (100) according to claim 7, characterized in that The core shaft (11) is provided with a first limiting structure and a second limiting structure, and the bushing (31) is located between the first limiting structure and the second limiting structure.
9. The electric machine (100) according to claim 8, characterized in that: The hollow chamber (111) has a first end and a second end, and one end of the guide rod (22) extends into the hollow chamber (111) through the second end; The first limiting structure is located between the first end and the second end, and the second limiting structure is located at the second end.
10. The electric machine (100) according to claim 8, characterized in that The first limiting structure is configured as a limiting step (12).
11. The electric machine (100) according to claim 8, characterized in that The second limiting structure comprises a limiting member (13); the inner circumference of the core shaft (11) is provided with a mounting groove; the limiting member (13) is mounted in the mounting groove and partially protrudes from the mounting groove.
12. The electric machine (100) according to claim 6, characterized in that The secondary assembly (20) further comprises: A shell (21), the shell (21) is sleeved on the primary component (10), and the guide rod (22) is connected to the shell (21).
13. The electric machine (100) according to claim 12, characterized in that Also includes: A second bearing (40), wherein the second bearing (40) is disposed between the housing (21) and the core shaft (11).
14. The electric machine (100) according to claim 13, characterized in that The second bearing (40) is a self-lubricating bearing.
15. The electric machine (100) according to claim 1, characterized in that The rolling element (32) is a ball.
16. A suspension assembly, characterized in that: include: The motor (100) according to any one of claims 1 to 15; A fork arm (23), wherein the fork arm (23) is connected to the secondary assembly (20).
17. A vehicle, characterized in that: include: The suspension assembly as claimed in claim 16.