Suspension electric motor, suspension assembly and vehicle

Abstract

A suspension electric motor, a suspension assembly, and a vehicle. The suspension electric motor comprises a housing, wherein a first cavity and a second cavity are spaced apart inside the housing in the axial direction of the housing; a one-way flow channel, the first cavity and the second cavity are in communication with each other; and a lubricating medium is located in at least the second cavity, and the lubricating medium in the second cavity unidirectionally flows into the first cavity through the one-way flow channel.

Description

Suspension motor, suspension assembly and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411181752.2, filed on August 26, 2024, entitled "Suspension Motor, Suspension Assembly and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicle parts technology, and in particular to a suspension motor, suspension assembly, and vehicle. Background Technology

[0003] In related technologies, traditional levitation motors utilize alternating current to generate magnetic force, which interacts with a permanent magnetic field to produce linear reciprocating motion. Like traditional motors, levitation motors rely on the interaction between a stator and a mover assembly to generate motion. When the stator and mover assemblies move relative to each other, friction is generated, which reduces the performance of the levitation motor. Technical issues

[0004] Therefore, the performance of the suspension motor is reduced due to friction during operation. Technical solutions

[0005] This application provides a suspension motor, suspension assembly, and vehicle to improve the performance degradation of the suspension motor due to friction during operation, thereby at least partially solving the aforementioned technical problems.

[0006] In a first aspect, this application provides a levitation motor, comprising:

[0007] The outer casing has a first cavity and a second cavity that are interconnected and spaced apart along the axial direction of the outer casing.

[0008] A unidirectional flow assembly includes a unidirectional flow channel communicating with the first cavity and the second cavity; and

[0009] A lubricating medium is located at least in the second cavity; wherein, under the force generated by the reduction in the volume of the second cavity, the one-way flow component is opened, and the lubricating medium in the second cavity flows unidirectionally into the first cavity through the one-way flow component.

[0010] According to a second aspect of this application, this application also provides a suspension assembly including the aforementioned suspension motor and wishbone, wherein the suspension motor further includes a mover module, and one end of the wishbone is connected to the mover module.

[0011] According to a third aspect of this application, this application also provides a vehicle including a wheel, a body and the aforementioned suspension assembly, wherein the suspension motor further includes a stator module, the mover module moves relative to the stator module, the body is connected to the stator module, and the wheel is connected to the other end of the fork arm. Beneficial effects

[0012] In the suspension motor, suspension assembly, and vehicle of this application embodiment, the hydraulic pressure generated by the reduction of the volume of the second cavity during the operation of the suspension motor, combined with a one-way flow component, enables the one-way flow of the lubricating medium from the second cavity to the first cavity. The lubricating medium plays a lubricating role in both the first and second cavities, improving the performance degradation of the suspension motor due to friction during operation and extending the service life of the suspension motor. Attached Figure Description

[0013] Figure 1 is a three-dimensional structural schematic diagram of a levitation motor provided in some embodiments of this application;

[0014] Figure 2 is a cross-sectional structural diagram of a levitation motor provided in some embodiments of this application;

[0015] Figure 3 is a magnified view of a portion of position A in Figure 2;

[0016] Figure 4 is a three-dimensional structural schematic diagram of a one-way valve provided in some embodiments of this application;

[0017] Figure 5 is a cross-sectional view of a check valve in the closed state according to some embodiments of this application;

[0018] Figure 6 is a cross-sectional view of a check valve in the open state according to some embodiments of this application;

[0019] Figure 7 is a three-dimensional structural diagram of the outer shell provided in some embodiments of this application;

[0020] Figure 8 is a schematic diagram of the cross-sectional structure taken along the section line B-B' shown in Figure 7;

[0021] Figure 9 is a cross-sectional structural diagram of a sealing assembly provided in some embodiments of this application;

[0022] Figure 10 is a three-dimensional structural schematic diagram of the sealing ring body provided in some embodiments of this application;

[0023] Figure 11 is a schematic diagram of a suspension assembly according to some embodiments of this application;

[0024] Figure 12 is a schematic diagram of a vehicle according to some embodiments of this application.

[0025] The attached diagrams are labeled as follows: 100, Suspension motor; 200, Suspension assembly; 300, Vehicle; 1, Moving part module; 11, Housing; 11A, First cavity; 11B, Second cavity; 11C, Fixing groove; 11D, Top opening of housing; 11E, Bottom opening of housing; 11F, Sealing ring mounting groove; 11G, Injection port; 11H, Receiving groove; 12, Guide rod; 12A, Free end; 12B, Connecting end; 13, Magnet; 14, Axial stop; 2, Stator module; 21, Center rod; 21A, Center rod cavity; 22, Stator core; 23, Winding module; 25, End cap; 26, Fork arm; 3, One-way flow assembly; 3A, One-way flow channel; 31. One-way valve; 31A. Inlet; 31B. Outlet; 311. Valve body; 311A. Valve body flow channel; 311B. Inlet section; 311C. Intermediate section; 311D. Outlet section; 312. Valve core; 312A. First end; 312B. Second end; 312C. Opening; 312D. Receiving cavity; 312E. Valve core inlet; 313. Spherical body; 314. Spring; 315. Stop plate; 32. First flow channel; 321. First flow channel section; 322. Second flow channel section; 33. External pipe; 33A. First pipe port; 33B. Second pipe port; 34. Second flow channel; 4. Lubricating medium; 51. First guide structure; 52. Second guide structure; 6. Sealing assembly; 61. Sealing ring body; 611. First sealing lip; 612. Second sealing lip; 613. Annular outer edge; 614. Annular seal; 7. Flange.

[0026] Implementation methods of this application

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] According to a first aspect of this application, as shown in Figures 1 to 3, this application provides a suspension motor 100. The suspension motor 100 includes a housing 11, a one-way flow component 3, and a lubricating medium 4.

[0029] Along the axial direction of the outer shell 11, the interior of the outer shell 11 is provided with interconnected first cavities 11A and second cavities 11B. A one-way flow assembly 3 includes a one-way flow channel 3A. The one-way flow channel 3A communicates with the first cavity 11A and the second cavity 11B. The lubricating medium 4 is located at least in the second cavity 11B. Under the force generated by the reduction in volume of the second cavity 11B, the one-way flow channel 3A of the one-way flow assembly 3 becomes open, and the lubricating medium 4 in the second cavity 11B flows unidirectionally into the first cavity 11A through the one-way flow channel 3A of the one-way flow assembly 3.

[0030] In some embodiments of the levitation motor 100 of this application, the hydraulic pressure generated by reducing the volume of the second cavity 11B during the operation of the levitation motor 100, together with the one-way flow component 3, realizes the one-way flow of the lubricating medium 4 from the second cavity 11B to the first cavity 11A. The lubricating medium 4 plays a lubricating role in both the first cavity 11A and the second cavity 11B, thereby improving the problem of performance degradation of the levitation motor 100 due to friction during operation.

[0031] During the reciprocating motion of the levitation motor 100, the volumes of the first cavity 11A and the second cavity 11B undergo opposite changes. When a lubricating medium 4 is provided in the second cavity 11B, the pressure on the lubricating medium 4 in the second cavity 11B changes with the volume of the second cavity 11B. For example, if the volume of the second cavity 11B decreases, the pressure on the lubricating medium 4 in the second cavity 11B increases. Conversely, if the volume of the second cavity 11B increases, the pressure on the lubricating medium in the second cavity 11B decreases.

[0032] The lubricating medium 4 has good lubricating properties and can reduce the friction between different contacting structures when it is located between them. The first cavity 11A, the second cavity 11B, and the one-way flow component 3 constitute a sealed circulation cavity in which the lubricating medium 4 circulates, thereby lubricating the structures in the circulation cavity of the suspension motor 100. In some embodiments, the lubricating medium 4 can be a lubricating oil with good insulating properties. In this way, the risk of the suspension motor 100 burning out when the lubricating medium 4 circulates in the first cavity 11A and the second cavity 11B is reduced.

[0033] In some embodiments, the lubricating medium 4 in the second cavity 11B may be located in a portion of the second cavity 11B. Thus, the lubricating medium 4 has a smaller volume, and when the lubricating medium 4 circulates due to the pressure difference generated during the reciprocating motion of the suspension motor 100, the resistance generated by the lubricating medium 4 during the operation of the suspension motor 100 is reduced, and the time required for the suspension motor 100 to perform reciprocating motion is shortened.

[0034] In some embodiments, the lubricating medium 4 may be located not only in the second cavity 11B, but also in the one-way flow channel 3A of the one-way flow assembly 3. Thus, under the force generated by the reduction in the volume of the second cavity 11B, the lubricating medium 4 can flow from the one-way flow channel 3A of the one-way flow assembly 3 into the first cavity 11A more quickly.

[0035] In some embodiments, the first cavity 11A may be located above the second cavity 11B, but is not limited thereto. In other embodiments, the first cavity 11A may be located below the second cavity 11B.

[0036] When the first cavity 11A is located above the second cavity 11B, the lubricating medium 4 in the first cavity 11A can flow into the second cavity 11B at least under the influence of gravity. Combined with the unidirectional flow of the lubricating medium 4 from the second cavity 11B to the first cavity 11A via the one-way flow assembly 3, the lubricating medium 4 can circulate within the first and second cavities 11A and 11B. Therefore, the suspension motor 100 of this application can achieve the circulation of the lubricating medium 4 within the first and second cavities 11A and 11B without the need for an external pump and an external storage medium device, simplifying the structure of the suspension motor 100 and reducing its power consumption.

[0037] In some embodiments, as shown in Figures 2 and 4 to 6, the one-way flow assembly 3 includes a one-way valve 31, which has an inlet 31A, an outlet 31B, and a valve body flow channel 311A. The valve body flow channel 311A ​​is located between the inlet 31A and the outlet 31B. The inlet 31A of the one-way valve 31 communicates with the second cavity 11B, and the outlet 31B of the one-way valve 31 communicates with the first cavity 11A. The one-way flow channel 3A includes the valve body flow channel 311A.

[0038] Under the pressure difference generated during the operation of the circulating motor, the lubricating medium 4 in the second cavity 11B enters the valve body flow channel 311A ​​of the one-way valve 31 from the inlet 31A, thus opening the valve body flow channel 311A. After passing through the opened valve body flow channel 311A, the lubricating medium 4 flows out from the outlet 31B to the first cavity 11A. When the lubricating medium 4 flows back to the outlet 31B of the one-way valve 31 due to gravity, the valve body flow channel 311A ​​of the one-way valve 31 closes, ensuring that the lubricating medium 4 in the one-way flow assembly 3 always maintains a high liquid level. When the medium liquid pressure inside the suspension motor 100 increases, it can force the lubricating medium 4 through the one-way flow assembly 3 into the first cavity 11A. Therefore, using the one-way flow assembly 3 ensures that the lubricating medium 4 flows unidirectionally from the second cavity 11B to the first cavity 11A, and reduces the risk of the lubricating medium 4 flowing back due to gravity.

[0039] In some embodiments, as shown in Figures 5 and 6, the one-way valve 31 includes a valve body 311 and a valve core 312. The valve body 311 includes an inlet 31A and an outlet 31B. A valve body flow channel 311A ​​is disposed inside the valve body 311, located between the inlet 31A and the outlet 31B. The valve core 312 is disposed within the valve body flow channel 311A. The valve core 312 moves relative to the valve body 311 within the valve body flow channel 311A, switching between an open position and a closed position. In the open position of the valve core 312 within the valve body flow channel 311A, a gap exists between the end of the valve core 312 near the inlet 31A and the inner wall of the valve body flow channel 311A. In the closed position of the valve core 312, the end of the valve core 312 near the inlet 31A abuts against the inner wall of the valve body flow channel 311A.

[0040] As shown in Figures 5 and 6, by way of example, the one-way flow assembly 3 includes a valve body 311, a valve core 312, a ball 313, a spring 314, and a stop plate 315.

[0041] The valve body 311 includes an inlet 31A and an outlet 31B. The valve body 311 also includes a valve body flow channel 311A ​​located inside the valve body 311, between the inlet 31A and the outlet 31B. The valve body flow channel 311A ​​includes an inlet section 311B, an intermediate section 311C, and an outlet section 311D arranged sequentially along the axial direction of the valve body 311. The orifice diameter of the intermediate section 311C is larger than the orifice diameter of the outlet of the inlet section 311B, and the outlet of the inlet section 311B is adjacent to the intermediate section 311C.

[0042] A valve core 312 is disposed in an intermediate section 311C. Along the axial direction of the valve core 312, the valve core 312 has opposing first ends 312A and second ends 312B. The first end 312A of the valve core 312 is closed, and the second end 312B of the valve core 312 has an opening 312C. When the first end 312A of the valve core 312 abuts against the inner wall of the junction between the inlet section 311B and the intermediate section 311C, the valve core 312 is in a closed position. When there is a gap between the first end 312A of the valve core 312 and the junction between the inlet section 311B and the intermediate section 311C, the valve core 312 is in a conducting position. In some embodiments, the first end 312A of the valve core 312 may include a frustum-shaped end, the diameter of which may be greater than or equal to the orifice diameter of the outlet of the inlet section near the intermediate section. In other embodiments, the first end 312A of the valve core 312 may also include a tapered end.

[0043] The valve core 312 has an internal accommodating cavity communicating with an opening 312C at its second end 312B. A spherical body 313 and a spring 314 are disposed within the accommodating cavity. The spherical body 313 is positioned near the first end 312A of the valve core 312, and the spring 314 is positioned near the second end 312B of the valve core 312. The spring 314 provides spring force. The spherical body 313 is primarily subjected to the spring force provided by the spring 314 and the hydraulic pressure provided by the lubricating medium 4; the two forces are in opposite directions. A valve core inlet 312E is provided on the side wall of the valve core 312, communicating with the accommodating cavity. In some embodiments, the spherical body 313 and the spring 314 may not be connected; in other embodiments, they may be connected. In some embodiments, the diameter of the spherical body 313 may be larger than the inner diameter of the spring 314, so that an interaction force can be generated between the spherical body 313 and the spring 314.

[0044] A stop plate 315 is fixed at the junction between the intermediate section 311C and the outlet section 311D. The stop plate 315 serves to support and stop the spring 314, preventing the spring 314 from falling out of the receiving cavity of the valve core 312. The stop plate 315 also includes a flow hole that penetrates the stop plate 315 and communicates with the receiving cavity and the outlet section 311D.

[0045] As shown in Figure 5, when the lubricating medium 4 enters from the outlet 31B, the gravity and spring force of the lubricating medium 4 press the first end 312A of the valve core 312 against the outlet of the inlet section 311B. At this time, the first end 312A of the valve core 312 blocks the outlet of the inlet section 311B. That is, there is no gap between the first end 312A of the valve core 312 and the outlet of the inlet section 311B. The lubricating medium 4 cannot flow out from the inlet 31A, and the one-way valve 31 is in the closed state.

[0046] As shown in Figure 6, when the levitation motor 100 moves, reducing the volume of the second cavity 11B to a point where the hydraulic pressure in the second cavity 11B is sufficiently high, the lubricating medium 4 enters through the second flow channel 34 from the inlet 31A. The hydraulic pressure of the lubricating medium 4 overcomes the spring force provided by the spring 314, pushing the valve core 312. There will be a gap between the first end 312A of the valve core 312 and the outlet of the inlet section 311B. The lubricating medium 4 enters the intermediate section 311C through the gap and flows from the intermediate section 311C into the valve core inlet 312E and then into the receiving cavity of the valve core 312. The lubricating medium 4 pushes the spherical body 313, which in turn pushes the spring 314, causing the lubricating medium 4 to flow out from the outlet 31B. The valve body flow channel 311A ​​of the one-way valve 31 is in a conductive state.

[0047] In some embodiments, the check valve 31 is disposed outside the housing 11. This simplifies the installation process of the check valve 31.

[0048] In some embodiments, as shown in FIG2, the one-way flow channel 3A further includes a first flow channel 32, which connects the liquid outlet 31B of the one-way valve 31 and the first cavity 11A. Thus, the first flow channel 32 enables communication between the liquid outlet 31B of the one-way valve 31 and the first cavity 11A.

[0049] In some embodiments, as shown in FIG2, when the one-way valve 31 is disposed outside the housing 11, the first flow channel 32 includes a first flow channel section 321 and a second flow channel section 322. The first flow channel section 321 is disposed inside the housing 11 and communicates with the first cavity 11A. The second flow channel section 322 is disposed outside the housing 11 and communicates the first flow channel section 321 with the outlet 31B of the one-way valve 31. This facilitates communication between the external one-way valve 31 and the internal first cavity 11A.

[0050] In some embodiments, as shown in Figures 1 and 2, the one-way flow assembly 3 further includes an outer pipe 33. The outer pipe 33 is disposed outside the housing 11 and includes a first port 33A and a second port 33B. A second flow channel section 322 is disposed inside the outer pipe 33 and located between the first port 33A and the second port 33B. The first port 33A is adjacent to and communicates with the outlet 31B of the one-way valve 31, and the second port 33B of the outer pipe 33 is adjacent to and communicates with the first flow channel section 321. Thus, the one-way valve 31 and the first flow channel section 321 are connected through the outer pipe 33.

[0051] In some embodiments, as shown in Figures 2, 7, and 8, the housing 11 further includes a fixing groove 11C. The fixing groove 11C is recessed from the outer surface of the housing 11 towards the interior of the housing 11, and the outer pipe 33 is fixed in the fixing groove 11C. In this way, by placing the outer pipe 33 in the fixing groove 11C, the outer pipe 33 is fixed while ensuring that the outer pipe 33 can be connected to the first flow channel section 321.

[0052] In some embodiments, the housing 11 may further include a check valve mounting groove. The check valve mounting groove is recessed from the outer surface of the housing 11 to the interior of the housing 11 and communicates with the fixing groove 11C. The check valve 31 is mounted in the check valve mounting groove. This facilitates the connection between the check valve and the external pipe 33.

[0053] In some embodiments, as shown in FIG2, the one-way flow channel 3A further includes a second flow channel 34. The second flow channel 34 is disposed inside the housing 11 and connects the liquid inlet 31A of the one-way valve 31 with the second cavity 11B. Thus, the connection between the liquid inlet 31A of the one-way valve 31 and the second cavity 11B is realized through the second flow channel 34.

[0054] In some embodiments, as shown in FIG2, along the axial direction of the housing 11, the vertical distance between the liquid outlet 31B and the outlet of the first flow channel 32 is d1, and the vertical distance between the liquid inlet 31A and the inlet of the second flow channel 34 is d2, where d1 > d2. The outlet of the first flow channel 32 is adjacent to and connected to the first cavity 11A, and the inlet of the second flow channel 34 is adjacent to and connected to the second cavity 11B. Thus, the distance between the one-way valve 31 and the inlet of the second flow channel 34 is smaller, which is more conducive to maintaining a higher liquid level of the lubricating medium 4 in the one-way flow assembly 3. When the medium liquid pressure in the second cavity 11B of the suspension motor 100 increases, the lubricating medium 4 can be squeezed through more quickly to enter the first cavity 11A.

[0055] As shown in Figures 2 and 8, the outer casing 11 includes a top opening 11D, which is located at one end of the outer casing 11 in the axial direction and is adjacent to the first cavity 11A.

[0056] As shown in Figure 2, in some embodiments, the levitation motor 100 further includes a central rod 21. The central rod 21 is used to support the linear motion of the levitation motor 100 and integrates other modules of the levitation motor 100. The central rod 21 passes through the top opening 11D of the housing and extends into the first cavity 11A and the second cavity 11B. A central rod cavity 21A is provided inside the central rod 21.

[0057] As shown in Figure 2, in some embodiments, the levitation motor 100 further includes a first guide structure 51, which supports the linear movement of the central rod 21 in the first cavity 11A and serves as a guide. The first guide structure 51 is disposed between the inner wall of the first cavity 11A and the central rod 21.

[0058] In some embodiments, the first guide structure 51 is located axially on the side of the first flow channel 32 near the outlet of the first flow channel 32, close to the second cavity 11B. The outlet of the first flow channel 32 is adjacent to and communicates with the first cavity 11A. Thus, the lubricating medium 4 flowing out from the outlet of the first flow channel 32 acts as a lubricant between the first guide structure 51 and the central rod 21, reducing the friction between the first guide structure 51 and the central rod 21 and extending the service life of the first guide structure 51.

[0059] In some embodiments, the first guide structure 51 is fixed to the inner wall of the first cavity 11A. The surface of the first guide structure 51 facing the central rod 21 is provided with a wear-resistant material to improve the wear resistance of the first guide structure 51.

[0060] In some embodiments, the first guide structure 51 may include a bearing. This ensures the guiding function of the first guide structure 51. The bearing may include a sliding bearing, but is not limited thereto.

[0061] As shown in Figure 2, the levitation motor 100 also includes a guide rod 12. The guide rod 12 is used for linear guidance. The guide rod 12 has a free end 12A and a connecting end 12B that are arranged opposite each other. The free end of the guide rod 12 is inserted into the central rod cavity 21A, and the connecting end 12B of the guide rod 12 is fixed to the end cap 25. A portion of the guide rod 12 is located in the second cavity 11B.

[0062] As shown in Figure 2, the levitation motor 100 also includes a second guide structure 52. The second guide structure 52 supports the linear movement of the guide rod 12 and the central rod 21 in the second cavity 11B, and also provides guidance. The second guide structure 52 is disposed between the inner wall of the central rod cavity 21A and the guide rod 12. Therefore, the first guide structure 51 and the second guide structure 52 cooperate to support the linear movement of the central rod 21, thereby enabling the levitation motor 100 to achieve linear reciprocating motion.

[0063] In some embodiments, the second guide structure 52 is fixed to the inner wall of the central rod cavity 21A. The surface of the second guide structure 52 facing the guide rod 12 is provided with a wear-resistant material to improve the wear resistance of the second guide structure 52.

[0064] In some embodiments, the second guide structure 52 may include a bearing. This ensures the guiding function of the second guide structure 52. The bearing may include a sliding bearing, but is not limited thereto.

[0065] As shown in Figure 2, the housing 11 also includes a bottom opening 11E, which is located at the other end of the housing 11 in the axial direction and adjacent to the second cavity 11B. An end cap 25 is disposed at the bottom opening 11E to cover it. The end cap 25 is detachably connected to the housing 11. In some embodiments, the end cap 25 and the bottom opening 11E can be sealed with a sealant or other sealing material to prevent leakage of lubricating medium from the gap between the end cap 25 and the bottom opening 11E.

[0066] As shown in Figure 2, the levitation motor 100 also includes a magnet 13. The magnet 13 serves as a permanent magnet, providing a permanent magnetic field. In some embodiments, the magnet 13 is attached to the inner wall of the housing 11. In other embodiments, the magnet 13 may also be fixed to the central rod 21.

[0067] As shown in Figure 2, the levitation motor 100 also includes a stator core 22. The stator core 22 serves as a magnetic conductor. In some embodiments, the stator core 22 is sleeved on the central rod 21.

[0068] As shown in Figure 2, the levitation motor 100 also includes a winding module 23. In some embodiments, the winding module 23 may consist of three different phases. In some embodiments, the winding module 23 is disposed on the stator core 22. In other embodiments, the winding module 23 may also be disposed on the inner wall of the housing 11. After alternating current is applied, the phase sequence of the winding module 23 changes, causing a change in the magnetic field strength and electromagnetic direction of the stator core 22, and the resulting thrust pushes the central rod 21 to generate relative motion between it and the magnet 13.

[0069] It should be noted that when the winding module 23 is mounted on the stator core 22 and the magnet 13 is attached to the inner wall of the outer casing 11, there will be gaps between the winding module 23 and the magnet 13, as well as between the stator cores 22. Under the action of gravity and hydraulic pressure, the lubricating medium 4 in the first cavity 11A can flow into the second cavity 11B through the gaps.

[0070] As shown in Figure 2, the levitation motor 100 also includes a center rod positioning part 24. The center rod positioning part 24 is used to position other modules integrated on the center rod 21 and prevent them from falling off. For example, the stator core 22 is sleeved on the center rod 21, and the winding module 23 is fixed to the stator core 22. The center rod positioning part 24 acts as a lower limit for the stator core 22 and the winding module 23. The center rod positioning part 24 is connected to one end of the center rod 21 near the second cavity 11B, and the connection method includes, but is not limited to, a threaded connection.

[0071] In some embodiments, the suspension motor 100 further includes a fork arm 26, one end of which is connected to an end cap 25, such that one end of the fork arm 26 is connected to the housing 11. The other end of the fork arm 26 is used to connect to an external moving part, such as a vehicle wheel.

[0072] In some embodiments, as shown in Figures 2, 3, 9, and 10, the suspension motor 100 further includes a sealing assembly 6 that seals the gap between the center rod 21 and the inner wall of the top opening 11D of the housing. This prevents leakage of the lubricating medium 4 through the gap between the center rod 21 and the top opening 11D of the housing.

[0073] In some embodiments, as shown in Figures 3 and 9, the sealing assembly 6 includes a sealing ring body 61. The sealing ring body 61 includes a first sealing lip 611 disposed between the central rod 21 and the inner wall of the top opening 11D of the housing. The first sealing lip 611 contacts the central rod 21. Thus, a sealing surface is formed between the first sealing lip 611 and the central rod 21. Under the action of hydraulic pressure, the first sealing lip 611 deforms, causing the lip edge to tightly adhere to the sealing surface, thereby achieving a sealing effect. In some embodiments, the first sealing lip 611 is press-fitted with the central rod 21 to improve the sealing effect of the first sealing lip 611.

[0074] In some embodiments, as shown in Figures 3 and 9, the sealing assembly 6 further includes an annular seal 614 disposed between the first sealing lip 611 and the inner wall of the housing 11. This achieves a seal between the first sealing lip 611 and the inner wall of the housing 11. In some embodiments, the annular seal 614 includes, but is not limited to, a sealing O-ring.

[0075] In some embodiments, as shown in Figures 3, 9, and 10, a sealing ring mounting groove 11F is provided on the inner wall of the top opening 11D of the housing. The sealing ring body 61 also includes an annular outer edge portion 613, which is connected to the first sealing lip 611 and disposed in the sealing ring mounting groove 11F. Thus, the sealing ring body 61 is mounted on the housing 11 through the annular outer edge portion 613.

[0076] In some embodiments, as shown in Figures 2 and 3, the levitation motor 100 further includes a flange 7, which is disposed outside the housing 11, with an annular outer edge 613 sandwiched between the housing 11 and the flange 7. Thus, the flange 7 clamps and secures the sealing assembly 6. The flange 7 is detachably fixed to the housing 11.

[0077] In some embodiments, as shown in Figures 3 and 9, the sealing ring body 61 further includes a second sealing lip 612. The second sealing lip 612 is connected to the annular outer edge 613 and located between the flange 7 and the central rod 21, with the second sealing lip 612 in contact with the central rod 21. Thus, the second sealing lip 612 seals the gap between the flange 7 and the central rod 21. In some embodiments, the second sealing lip 612 is press-fitted with the central rod 21 to improve the sealing effect of the second sealing lip 612. In some embodiments, an annular seal 614 is also provided between the second sealing lip 612 and the flange 7 to seal the gap between the second sealing lip 612 and the flange 7. A groove is provided between the second sealing lip 612 and the first sealing lip 611, the groove being recessed inward in a direction away from the central rod 21. In some embodiments, the groove can be a V-shaped groove.

[0078] In some embodiments, as shown in FIG2, the housing 11 further includes an injection port 11G and a seal for sealing the injection port 11G. Lubricating medium 4 can be injected into the cavity of the housing 11 through the injection port 11G. There can be one or more injection ports 11G. The injection ports 11G can be located at any position on the housing 11. The size of the injection ports 11G can also be adjusted.

[0079] As can be seen from the foregoing, in some embodiments of this application, by providing sealing components 6 and sealing elements for sealing the injection port 11G, the lubricating medium 4 in the first cavity 11A and the second cavity 11B is prevented from flowing out of the outer shell 11 through the gap between the outer shell 11 and other structures, so that the lubricating medium 4 can continuously circulate inside the cavity of the suspension motor 100.

[0080] In some embodiments, as shown in Figures 2 and 3, a receiving groove 11H is further provided on the inner wall of the top opening 11D of the housing. The receiving groove 11H is located on the side of the sealing ring mounting groove 11F near the first cavity 11A. An axial stop 14 is provided in the receiving groove 11H, and the axial stop 14 is spaced apart from the sealing ring body 61. Thus, the axial stop 14 serves to prevent the sealing assembly 6 from falling off axially. In some embodiments, the axial stop 14 may include a retaining spring.

[0081] The levitation motor 100 includes a moving part module 1 and a stator module 2 that move relative to each other to achieve reciprocating linear motion of the levitation motor 100.

[0082] In some embodiments, the mover module 1 includes a housing 11, and a portion of the stator module 2 is disposed within a cavity and located between a first cavity 11A and a second cavity 11B. The mover module 1 also includes modules such as a magnet 13 integrated onto the housing 11. The stator module 2 includes modules such as a central rod 21, a stator core 22 integrated onto the central rod 21, and a winding module 23. Thus, the levitation motor 100 adopts a structure with an external mover and an internal stator.

[0083] In other embodiments, the stator module 2 includes a housing 11, and a portion of the mover module 1 is disposed within a cavity and located between a first cavity 11A and a second cavity 11B. The stator module 2 also includes modules such as a magnet 13 integrated onto the housing 11. The mover module 1 includes modules such as a central rod 21, a stator core 22 integrated onto the central rod 21, and a winding module 23. Thus, the levitation motor 100 adopts a structure with an inner mover and an outer stator.

[0084] For example, the assembly method of the levitation motor 100 shown in FIG2 may include: sequentially installing the stator core 22 and the winding module 23 into the center rod 21 from below; installing the center rod positioning part; installing the second guide structure 52; and integrating the stator module 2. Then, the magnet 13 is attached to the inside of the housing 11; the first guide structure 51 is installed; the sealing assembly 6 is placed in the opening 11D at the top of the housing 11; the flange 7 is screwed on with bolts; the sealing assembly 6 is clamped; and the housing 11 and the one-way valve 31 are connected with the outer pipe 33; thus integrating the moving module 1. The moving module 1 and the stator module 2 are then installed together; the guide rod 12 and the fork arm 26 are installed; finally, the lubricating medium 4 is filled in; and after the medium filling is completed, the seal of the sealing injection port 11G is installed.

[0085] It should be noted that during the initial injection of the medium, the internal and external flow paths (the flow channels of the external pipe 33 and the one-way valve 31) of the outer casing 11 are injected with the medium separately. The amount of medium injected internally is determined by the movement speed and stroke of the suspension motor 100, ensuring that the suspension motor 100 can squeeze the medium liquid into the second guide structure 52 during movement. The amount of medium injected into the external flow path is required to fill the entire pipeline. The one-way valve 31 is a key component to ensure this amount of medium injected. At this time, the liquid level inside the external pipe 33 is higher than the liquid level inside the second cavity 11B of the suspension motor 100.

[0086] The working process of the levitation motor shown in Figure 2 will be described in detail below. Specifically, the explanation will focus on the case where the first cavity 11A is located above the second cavity 11B.

[0087] When the moving module 1 moves upward, the volume of the first cavity 11A increases and the volume of the second cavity 11B decreases. At this time, the lubricating medium 4 inside the second cavity 11B of the levitation motor 100 moves upward. The resistance generated by the flow of the lubricating medium 4 increases the pressure at the bottom of the second cavity 11B. When the pressure at the bottom of the second cavity 11B is greater than the pressure at the bottom of the external flow channel, the lubricating medium 4 in the second cavity 11B causes the valve body flow channel 311A ​​of the one-way valve 31 to be opened under pressure. Part of the lubricating medium 4 in the second cavity 11B is forced into the external pipe 33 through the second flow channel 34 and the valve body flow channel 311A ​​of the one-way valve 31, and then flows into the upper end of the first guide structure 51 through the first flow channel section 321, thereby lubricating the first guide structure 51. Then, by gravity, the lubricating medium 4 can flow back into the interior of the second cavity 11B of the levitation motor 100 through the gap between the magnet 13 and the stator core 22.

[0088] When the moving module 1 moves downward, the volume of the first cavity 11A decreases and the volume of the second cavity 11B increases. The lubricating medium 4 inside the suspension motor 100 falls back into the second cavity 11B under the action of gravity and the thrust of the outer shell 11, thus completing the passive circulation process. Meanwhile, the medium liquid in the external flow channel hardly moves, maintaining a high liquid level.

[0089] It should be noted that when the moving module 1 includes the central rod 21, the central rod 21 moves downward to squeeze the medium liquid into the second guide structure 52, which plays a role in lubricating the medium liquid.

[0090] According to a second aspect of this application, referring to Figures 2 and 11, this application also provides a suspension assembly 200, which includes the aforementioned suspension motor 100 and a wishbone 26. The suspension motor 100 further includes a mover module 1, and one end of the wishbone 26 is connected to the mover module 1.

[0091] According to a third aspect of this application, referring to Figures 2, 11, and 12, this application also provides a vehicle 300, which includes wheels (not shown), a body (not shown), and the aforementioned suspension assembly 200. The suspension motor 100 further includes a stator module 2, a mover module 1 that moves relative to the stator module 2, the body being connected to the stator module 2, and the wheels being connected to the other end of the fork arm 26. Thus, the suspension assembly 200 connects the vehicle and the wheels, and the suspension assembly 200 releases the torque caused by the reaction force of the road surface acting on the wheels through the relative movement between the mover module 1 and the stator module 2, ensuring that the vehicle can travel smoothly.

[0092] In the description of this application, 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0093] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0094] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0095] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although the descriptions of each embodiment in this application have different focuses, and the parts not described in detail in a certain embodiment can be referred to the relevant content of other embodiments, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A levitation motor (100), comprising: The outer shell (11) has a first cavity (11A) and a second cavity (11B) that are connected to each other, spaced apart along the axial direction of the outer shell (11); A one-way flow component (3) includes a one-way flow channel (3A) that communicates with the first cavity (11A) and the second cavity (11B); and The lubricating medium (4) is located at least in the second cavity (11B); wherein, under the force generated by the reduction of the volume of the second cavity (11B), the one-way flow channel (3A) is opened, and the lubricating medium (4) in the second cavity (11B) flows unidirectionally into the first cavity (11A) through the one-way flow channel (3A).

2. The levitation motor (100) according to claim 1, wherein, The unidirectional flow component (3) includes: A one-way valve (31) has an inlet (31A), an outlet (31B), and a valve body flow channel (311A). The valve body flow channel (311A) is located between the inlet (31A) and the outlet (31B). The inlet (31A) of the one-way valve (31) is connected to the second cavity (11B), and the outlet (31B) of the one-way valve (31) is connected to the first cavity (11A). The one-way flow channel includes the valve body flow channel.

3. The levitation motor (100) according to claim 2, wherein, The one-way flow channel (3A) further includes a first flow channel (32) for connecting the liquid outlet (31B) of the one-way valve (31) and the first cavity (11A).

4. The levitation motor (100) according to claim 3, wherein, The one-way valve (31) is disposed outside the housing (11); the first flow channel (32) includes: A first flow channel section (321) is disposed inside the outer casing (11) and communicates with the first cavity (11A); and The second flow channel section (322) is disposed outside the housing (11) and connects the first flow channel section (321) with the liquid outlet (31B) of the one-way valve (31).

5. The levitation motor (100) according to claim 4, wherein, The one-way flow component (3) further includes an external pipe (33), which is disposed outside the housing (11) and includes a first port (33A) and a second port (33B). The second flow channel section (322) is disposed inside the external pipe (33) and located between the first port (33A) and the second port (33B). The first port (33A) is adjacent to and connected to the liquid outlet (31B) of the one-way valve (31), and the second port (33B) is adjacent to and connected to the first flow channel section (321).

6. The levitation motor (100) according to claim 5, wherein, The outer casing (11) also includes: The fixing groove (11C) is recessed into the interior of the outer surface of the outer shell (11) and the outer pipe (33) is fixed in the fixing groove (11C).

7. The levitation motor (100) according to claim 3, wherein, The unidirectional flow channel (3A) also includes: The second flow channel (34) is disposed inside the housing (11) and connects the liquid inlet (31A) of the one-way valve (31) with the second cavity (11B).

8. The levitation motor (100) according to claim 7, wherein, Along the axial direction of the outer shell (11), the vertical distance between the liquid outlet (31B) and the outlet of the first flow channel (32) is d1, the vertical distance between the liquid inlet (31A) and the inlet of the second flow channel (34) is d2, and d1 > d2. The outlet of the first flow channel (32) is adjacent to and connected to the first cavity (11A), and the inlet of the second flow channel (34) is adjacent to and connected to the second cavity (11B).

9. The levitation motor (100) according to claim 3, wherein, The outer casing (11) includes a top opening (11D), which is located at one axial end of the outer casing (11) and adjacent to the first cavity (11A). The levitation motor (100) also includes: The center rod (21) passes through the top opening (11D) of the housing and extends into the first cavity (11A); and A first guide structure (51) is disposed between the inner wall of the first cavity (11A) and the central rod (21).

10. The levitation motor (100) according to claim 9, wherein, In the axial direction of the outer shell (11), the first guide structure (51) is located on the side of the outlet of the first flow channel (32) near the second cavity (11B), and the outlet of the first flow channel (32) is adjacent to and connected to the first cavity (11A).

11. The levitation motor (100) according to claim 9, wherein, The first guide structure (51) includes a bearing.

12. The levitation motor (100) according to claim 9, wherein, The center rod (21) has a center rod cavity (21A) inside; the levitation motor (100) also includes: A guide rod (12) having a free end (12A), the free end (12A) of the guide rod (12) being inserted into the central rod cavity (21A) and a portion of the guide rod (12) being located in the second cavity (11B); and The second guide structure (52) is disposed between the inner wall of the central rod cavity (21A) and the guide rod (12).

13. The levitation motor (100) according to claim 9, wherein, The levitation motor (100) also includes: The sealing assembly (6) seals the gap between the center rod (21) and the inner wall of the top opening (11D) of the housing.

14. The levitation motor (100) according to claim 13, wherein, The sealing assembly (6) includes: The sealing ring body (61) includes a first sealing lip (611) disposed between the center rod (21) and the inner wall of the top opening (11D) of the housing, the first sealing lip (611) contacting the center rod (21).

15. The levitation motor (100) according to claim 14, wherein, The sealing assembly (6) further includes: An annular seal (614) is disposed between the first sealing lip (611) and the inner wall of the outer casing (11).

16. The levitation motor (100) according to claim 14, wherein, A sealing ring mounting groove (11F) is provided on the inner wall of the top opening (11D) of the outer casing; The sealing ring body (61) further includes an annular outer edge (613), which is connected to the first sealing lip (611) and disposed in the sealing ring mounting groove (11F).

17. The levitation motor (100) according to claim 16, wherein, The levitation motor (100) also includes: A flange (7) is disposed outside the housing (11), and the annular outer edge (613) is sandwiched between the housing (11) and the flange (7).

18. The levitation motor (100) according to claim 17, wherein, The sealing ring body (61) further includes a second sealing lip (612), which is connected to the annular outer edge (613) and located between the flange (7) and the center rod (21), and the second sealing lip (612) contacts the center rod (21).

19. The levitation motor (100) according to claim 16, wherein, A receiving groove (11H) is also provided on the inner wall of the top opening (11D) of the outer shell. The receiving groove (11H) is located on the side of the sealing ring mounting groove (11F) near the first cavity (11A). An axial stop (14) is provided in the receiving groove (11H). The axial stop (14) is spaced apart from the sealing ring body (61).

20. The levitation motor (100) according to any one of claims 1 to 19, wherein, The levitation motor (100) includes a moving sub-module (1) and a stator module (2) that move relative to each other; Wherein, the moving submodule (1) includes the outer shell (11), and a portion of the stator module (2) is disposed in the cavity and located between the first cavity (11A) and the second cavity (11B); or, the stator module (2) includes the outer shell (11), and a portion of the moving submodule (1) is disposed in the cavity and located between the first cavity (11A) and the second cavity (11B).

21. The levitation motor (100) according to any one of claims 1 to 20, wherein, The lubricating medium includes lubricating oil.

22. A suspension assembly (200) comprising a suspension motor (100) as described in any one of claims 1 to 21 and a wishbone (26), wherein the suspension motor (100) further comprises a mover module (1), and one end of the wishbone (26) is connected to the mover module (1).

23. A vehicle (300) comprising wheels, a body and a suspension assembly (200) as claimed in claim 22, wherein the suspension motor (100) further comprises a stator module (2), the mover module (1) being movable relative to the stator module (2), the body being connected to the stator module (2), and the wheels being connected to the other end of the fork arm (26).

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