Motor, suspension and vehicle

Abstract

The invention relates to a motor, a suspension and a vehicle, the motor comprises a primary assembly and a secondary assembly, the secondary assembly is connected to the primary assembly to enable the secondary assembly and the primary assembly to move relatively, a cavity is formed in the motor, and the cavity is suitable for promoting the relative movement of the secondary assembly and the primary assembly; and the cavity is matched with the motor to jointly realize relative movement of the secondary assembly and the primary assembly, so that the utilization rate of the internal space of the motor is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a motor, a suspension, and a vehicle. Background Art

[0002] The linear motor includes a primary assembly and a secondary assembly, which are coupled to drive the secondary assembly to move back and forth; an air spring, one end of which is suitable for fixing to the vehicle body, and the other end of the air spring is fixed to the secondary assembly. However, the existing linear motor does not effectively utilize the internal space of the motor, and the setting of the air spring increases the overall volume of the linear motor.

[0003] Combined with the characteristics of related technologies, it is deduced that the existing technology has technical problems such as low internal space utilization of the motor and large overall volume. Summary of the Invention

[0004] The embodiments of the present application provide a motor, a suspension, and a vehicle, which increase the utilization rate of the internal space of the motor to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above object, according to a first aspect of the present application, a motor is provided, comprising:

[0006] a primary assembly and a secondary assembly, the secondary assembly and the primary assembly being adapted for relative movement;

[0007] Wherein, a cavity is provided in the motor, and when the secondary component and the primary component perform relative motion, the cavity is filled with a medium or discharged with a medium to promote the relative motion of the secondary component and the primary component.

[0008] Optionally, the cavity is suitable for being filled with a medium or releasing a medium to facilitate relative movement between the secondary assembly and the primary assembly.

[0009] Optionally, the cavity includes a first cavity and a second cavity, and the first cavity and the second cavity are independently arranged.

[0010] Optionally, the cavity comprises a first cavity, and the first cavity is provided in the primary component.

[0011] Optionally, the primary assembly comprises a primary core shaft, the primary core shaft comprises a first core shaft portion, wherein the first cavity is provided in the first core shaft portion.

[0012] Optionally, the primary assembly further includes a primary iron core, wherein the primary iron core is mounted on an outer peripheral side of the first core shaft portion.

[0013] Optionally, the primary component further includes a first buffer, which is sleeved on the outer peripheral side of the primary core shaft; wherein the first buffer is located on one side of the primary iron core in the axial direction and is suitable for abutting the secondary component to buffer the primary iron core.

[0014] Optionally, the primary component is provided with a first air nozzle, and the first air nozzle is suitable for connecting to the first cavity for inflation or deflation.

[0015] Optionally, the primary core shaft comprises a second core shaft portion connected to one end of the first core shaft portion, the second core shaft portion being adapted to be connected to an end of a vehicle body, wherein the first air nozzle is arranged in the second core shaft portion.

[0016] Optionally, the secondary assembly includes a piston guide rod, one end of which is movably mounted in the primary assembly to enclose at least a portion of the first cavity together with the primary assembly.

[0017] Optionally, a first sealing member is provided on the outer peripheral side of the one end of the piston guide rod, and the first sealing member abuts against the cavity wall of the first cavity to seal the first cavity.

[0018] Optionally, the secondary assembly includes a second buffer member, and the second buffer member is adapted to abut against the primary assembly along the axial direction of the motor to buffer the primary assembly.

[0019] Optionally, the second buffer member is sleeved on the outer peripheral side of the other end of the piston guide rod.

[0020] Optionally, the primary assembly further comprises a locking member, which is mounted on the primary assembly and is adapted to abut against the one end of the piston guide rod to axially limit the movement of the piston guide rod.

[0021] Optionally, the primary assembly further includes a primary core shaft and a primary iron core, and the locking member is mounted on the primary core shaft to mount the primary iron core on the primary core shaft.

[0022] Optionally, a second sealing member is provided on the outer peripheral side of the locking member, and a second cavity is further provided in the motor, and the second sealing member abuts against the cavity wall of the second cavity to seal the second cavity.

[0023] Optionally, it is characterized in that the cavity includes a second cavity, and the second cavity is arranged in the secondary component.

[0024] Optionally, the secondary component includes a shell, and the primary component is movably disposed in the shell to enclose at least a portion of the second cavity together with the secondary component.

[0025] Optionally, the secondary component further includes a magnetic part and a partition installed on the shell, the magnetic part is suitable for moving under the drive of the primary component and is sleeved on the outer peripheral side of the primary component, wherein the partition is arranged between the primary component and the magnetic part.

[0026] Optionally, the partition and the primary assembly enclose at least a portion of the second cavity.

[0027] Optionally, the secondary assembly is provided with a second air nozzle, and the second air nozzle is suitable for communicating with the second cavity for inflation or deflation.

[0028] Optionally, the secondary assembly further comprises a lower fork arm mounted on the housing, wherein the lower fork arm is suitable for being connected to a wheel end, wherein the lower fork arm is provided with the second air nozzle.

[0029] Optionally, the secondary assembly further comprises a piston guide rod, one end of which is movably mounted in the primary assembly, wherein the other end of the piston guide rod is mounted on the lower fork arm.

[0030] Optionally, the other end of the piston guide rod is provided with a limiting hole, the lower fork arm is provided with a limiting protrusion, and the second air nozzle passes through the limiting protrusion; wherein, the limiting protrusion passes through the limiting hole.

[0031] Optionally, the second air nozzle is arranged on the housing.

[0032] According to a second aspect of the present application, a suspension is provided, comprising a motor as described in any one of the above embodiments.

[0033] According to a third aspect of the present application, a vehicle is further provided, comprising the motor as described in any one of the above embodiments, or comprising the suspension as described in the above embodiments.

[0034] In the motor of the embodiment of the present application, a cavity is provided inside the motor, and the cavity is suitable for promoting the relative movement of the secondary component and the primary component, so that the cavity cooperates with the motor to jointly realize the relative movement of the secondary component and the primary component, thereby improving the utilization rate of the internal space of the motor and alleviating the technical problems of low internal space utilization and large overall volume of the motor in the prior art.

[0035] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0037] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0038] Figure 1 is a schematic cross-sectional view of a motor provided in an exemplary embodiment of the present disclosure;

[0039] Figure 2 is a schematic structural diagram of a primary component in a motor provided in an exemplary embodiment of the present disclosure;

[0040] Figure 3 is a schematic cross-sectional view of a primary assembly in a motor provided in an exemplary embodiment of the present disclosure;

[0041] Figure 4 is a schematic structural diagram of a locking member in a motor provided in an exemplary embodiment of the present disclosure;

[0042] Figure 5 is a schematic cross-sectional view of a locking member in a motor provided in an exemplary embodiment of the present disclosure;

[0043] Figure 6 is a schematic cross-sectional view of a secondary assembly in a motor provided in an exemplary embodiment of the present disclosure;

[0044] Figure 7 is a schematic structural diagram of a piston guide rod in a motor provided in an exemplary embodiment of the present disclosure;

[0045] Figure 8 is a schematic cross-sectional view of a piston guide rod in a motor provided in an exemplary embodiment of the present disclosure;

[0046] Figure 9 2 is a schematic cross-sectional view of a lower fork arm of a motor provided in an exemplary embodiment of the present disclosure.

[0047] Description of reference numerals:

[0048] 1. Motor;

[0049] 2. Primary assembly; 21. Primary mandrel; 201. First mandrel portion; 202. Second mandrel portion; 22. Primary core; 23. Primary winding; 24. Locking member; 25. Second sealing member; 26. First buffer member; 27. Inner wall of cavity;

[0050] 3. Secondary assembly; 31. Piston guide rod; 32. Housing; 33. Lower fork arm; 34. Magnetic element; 35. Partition; 36. Second buffer; 37. Sliding bearing; 38. First seal; 39. Positioning protrusion

[0051] 10. Cavity; 101. First cavity; 102. Second cavity; 40. First air nozzle; 50. Second air nozzle; 60. Limiting hole. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0053] According to the first aspect of this application, see Figure 1 The motor 1 provided in the present disclosure includes a primary component 2 and a secondary component 3, wherein the secondary component 3 is connected to the primary component 2 so that the secondary component 3 and the primary component 2 move relative to each other, and a cavity 10 is provided in the motor 1, wherein the cavity 10 is suitable for promoting the relative movement of the secondary component 3 and the primary component 2.

[0054] In this embodiment, the cavity 10 is disposed in the motor 1 , so that the cavity 10 cooperates with the motor 1 to achieve relative movement between the secondary assembly 3 and the primary assembly 2 , thereby improving the utilization of the internal space of the motor 1 .

[0055] In one embodiment, the cavity 10 is suitable for being filled with a medium or releasing a medium to facilitate the relative movement between the secondary assembly 3 and the primary assembly 2 .

[0056] The medium may be, but is not limited to, air, and may also be other gases, liquids, or solids.

[0057] It can be understood that by filling the cavity 10 with a medium to adjust the air pressure in the cavity 10 , the cavity 10 can cooperate with the motor 1 to promote the relative movement between the secondary assembly 3 and the primary assembly 2 .

[0058] In one embodiment, see Figure 1 The cavity 10 includes a first cavity 101 and a second cavity 102, and the first cavity 101 and the second cavity 102 are independently arranged.

[0059] The cavity 10 may further include three or more independent cavities, each of which is used to promote the relative movement between the secondary component 3 and the primary component 2 .

[0060] It can be understood that the cavity 10 is configured as two independent first cavities 101 and second cavities 102 , and the first cavity 101 and second cavity 102 independently promote the relative movement of the secondary component 3 and the primary component 2 , thereby enhancing the promotion effect.

[0061] In one embodiment, the cavity 10 includes a first cavity 101 , and the first cavity 101 is disposed in the primary component 2 .

[0062] It is understandable that arranging the first cavity 101 in the primary assembly 2 can reduce the space occupied by the first cavity 101 inside the motor 1 .

[0063] In one embodiment, see Figure 2 and Figure 3 The primary assembly 2 includes a primary core shaft 21 , and the primary core shaft 21 includes a first core shaft portion 201 , wherein the first cavity 101 is disposed in the first core shaft portion 201 .

[0064] The first core shaft portion 201 is arranged close to the wheel end.

[0065] It is understandable that the first cavity 101 is disposed in the first core shaft portion 201 to facilitate cooperation with the secondary component 3 to form the first cavity 101 , thereby promoting relative movement between the secondary component 3 and the primary component 2 .

[0066] In one embodiment, see Figure 2 and Figure 3 The primary assembly 2 further includes a primary iron core 22 , wherein the primary iron core 22 is installed on the outer peripheral side of the first core shaft portion 201 .

[0067] One end of the primary core shaft 21 is in transitional fit with the primary iron core 22 , and the other end of the primary core shaft 21 is formed with a thread and connected to the vehicle body end.

[0068] The primary assembly 2 further includes a primary winding 23 , which is sleeved on the outer periphery of the primary core 22 .

[0069] It can be understood that by surrounding and forming the cavity 10 with the first core shaft portion 201 for mounting the primary iron core 22 and the primary winding 23 , the internal space of the electrode can be saved.

[0070] In one embodiment, see Figure 2 and Figure 3The primary component 2 also includes a first buffer 26, which is sleeved on the outer peripheral side of the primary core shaft 21; wherein the first buffer 26 is located on one side of the axial direction of the primary iron core 22 and is suitable for abutting the secondary component 3 to buffer the primary iron core 22.

[0071] The first buffer member 26 may be made of elastic material.

[0072] It is understandable that during the relative movement between the primary assembly 2 and the secondary assembly 3 , the first buffer 26 is used to prevent the top of the primary core 22 from directly colliding with the top of the housing 32 , thereby playing a buffering role.

[0073] In one embodiment, see Figure 2 and Figure 3 The primary component 2 is provided with a first air nozzle 40 , and the first air nozzle 40 is suitable for connecting to the first cavity 101 for inflation or deflation.

[0074] The first gas nozzle 40 is further provided with a first valve body, and the first valve body is used to control the switch of the first gas nozzle 40 to inflate or deflate the first cavity 101.

[0075] It can be understood that by providing the first air nozzle 40 in the primary component 2 and communicating with the first cavity 101 , the air pressure in the first cavity 101 can be controlled, so that the first cavity 101 can promote the relative movement between the primary component 2 and the secondary component 3 .

[0076] In one embodiment, see Figure 2 and Figure 3 The primary core shaft 21 includes a second core shaft portion 202 connected to one end of the first core shaft portion 201 , and the second core shaft portion 202 is suitable for connecting to the vehicle body end, wherein the first air nozzle 40 is arranged in the second core shaft portion 202 .

[0077] The first air nozzle 40 is disposed in the second core shaft portion 202 , which can save the internal space of the motor 1 .

[0078] In one embodiment, see Figure 6 、 Figure 7 、 Figure 8 The secondary component 3 includes a piston guide rod 31 , one end of which is movably mounted in the primary component 2 to enclose at least a portion of the first cavity 101 together with the primary component 2 .

[0079] It can be understood that the piston guide rod 31 is used to form a first cavity 101 together with the primary component 2. During the relative movement of the primary component 2 and the secondary component 3, the piston guide rod 31 can move axially in the first cavity 101 to cooperate with the first cavity 101 to promote the relative movement of the primary component 2 and the secondary component 3.

[0080] In one embodiment, see Figure 7 and Figure 8 A first sealing member 38 is provided on the outer peripheral side of the one end of the piston guide rod 31 , and the first sealing member 38 abuts against the cavity wall of the first cavity 101 to seal the first cavity 101 .

[0081] A second groove is further provided around the circumferential outer side of the piston guide rod 31 , and a first sealing member 38 is provided in the second groove.

[0082] The first sealing member 38 is elastic and is compressed by the inner wall 27 of the cavity of the primary core shaft 21 and is interference fitted.

[0083] The outer circumferential wall of the first sealing member 38 is provided with a diamond coating.

[0084] It can be understood that the first seal 38 is used to seal the first cavity 101 to prevent air leakage in the first cavity 101 from affecting the relative movement between the primary component 2 and the secondary component 3. The diamond coating on the outer peripheral side of the first seal 38 can reduce friction and improve wear resistance.

[0085] In one embodiment, see Figure 6 The secondary assembly 3 includes a second buffer member 36 , which is suitable for abutting against the primary assembly 2 along the axial direction of the motor 1 to buffer the primary assembly 2 .

[0086] It is understandable that the second buffer member 36 is used to prevent the primary assembly 2 from directly hitting the upper and lower fork arms 33 and the base of the piston guide rod 31 during the impact of the vehicle descending at high speed. The second buffer member 36 plays a role of buffering protection.

[0087] In one embodiment, see Figure 6 The second buffer member 36 is sleeved on the outer peripheral side of the other end of the piston guide rod 31.

[0088] It is understandable that directly sleeve the second buffer member 36 on the outer peripheral side of the piston guide rod 31 to facilitate the installation of the second buffer member 36 and better achieve buffering between the primary assembly 2 and the lower fork arm 33 and the base of the piston guide rod 31.

[0089] In one embodiment, see Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The primary assembly 2 further includes a locking member 24 , which is mounted on the primary assembly 2 and adapted to abut against one end of the piston guide rod 31 to axially limit the movement of the piston guide rod 31 .

[0090] The outer wall of the locking member 24 is formed with an external thread, and the bottom end of the inner wall 27 of the cavity of the primary core shaft 21 is formed with an internal thread. The external thread contacts and cooperates with the internal thread to lock the primary iron core 22.

[0091] The locking member 24 may be a hexagonal nut head to facilitate locking the primary core 22 .

[0092] It can be understood that the locking member 24 is used to axially limit the piston guide rod 31 to prevent the piston guide rod 31 from axially deviating during the cloud process.

[0093] In one embodiment, see Figure 2 and Figure 3 The primary assembly 2 further includes a primary core shaft 21 and a primary iron core 22 , and the locking member 24 is mounted on the primary core shaft 21 to mount the primary iron core 22 on the primary core shaft 21 .

[0094] It is understandable that the locking member 24 is also used to install the primary iron core 22 on the primary core shaft 21 and lock the primary iron core 22 .

[0095] In one embodiment, see Figure 4 and Figure 5 A second sealing member 25 is provided on the outer peripheral side of the locking member 24 . A second cavity 102 is also provided in the motor 1 . The second sealing member 25 abuts against the cavity wall of the second cavity 102 to seal the second cavity 102 .

[0096] The second sealing member 25 may be made of elastic material and be fitted with the cavity wall of the second cavity 102 in an interference fit manner.

[0097] It can be understood that the second sealing member 25 is used to enhance the sealing performance of the second cavity 102 to prevent the influence of air leakage of the second cavity 102 on the relative movement between the primary assembly 2 and the secondary assembly 3 .

[0098] In one embodiment, the cavity 10 includes a second cavity 102 , and the second cavity 102 is disposed in the secondary assembly 3 .

[0099] It can be understood that the second cavity 102 is provided in the secondary component 3 , which can improve the utilization rate of the internal space of the motor 1 .

[0100] In one embodiment, see Figure 2 and Figure 3 The secondary component 3 includes a shell 32 , and the primary component 2 is movably disposed in the shell 32 to enclose at least a portion of the second cavity 102 together with the secondary component 3 .

[0101] It can be understood that the second cavity 102 is enclosed between the primary component 2 and the secondary component 3. During the movement of the primary component 2 relative to the secondary component 3, the volume of the second cavity 102 will change, and air is inflated or deflated into the second cavity 102 through the second air nozzle 50 to promote the relative movement of the secondary component 3 and the primary component 2.

[0102] In one embodiment, see Figure 6 The secondary component 3 further includes a sliding bearing 37 , and the primary component 2 includes a primary core shaft 21 . The sliding bearing 37 is sleeved on the outer peripheral side of the primary core shaft 21 to limit the radial movement of the primary core shaft 21 .

[0103] It is understandable that the piston guide rod 31, the sliding bearing 37 and the locking member 24 together play a limiting role, which can ensure that the motor 1 is always in axial reciprocating motion. At the same time, the sliding bearing 37 can also reduce friction and enhance wear resistance.

[0104] In one embodiment, see Figure 6 The secondary component 3 also includes a magnetic part 34 and a partition 35 installed on the shell 32. The magnetic part 34 is suitable for moving under the drive of the primary component 2 and is sleeved on the outer peripheral side of the primary component 2, wherein the partition 35 is arranged between the primary component 2 and the magnetic part 34.

[0105] The partition 35 is used to block the magnetic component 34 and the primary component 2 .

[0106] The partition 35 is made of non-magnetic material.

[0107] It can be understood that the partition 35 abuts against the second seal 25 , and the contact surface between the partition 35 and the second seal 25 is a flat surface to prevent the second seal 25 from directly colliding with the magnetic member 34 . At the same time, the flat surface can reduce friction resistance.

[0108] It is understandable that the partition 35 plays the role of limiting and pressing the magnetic part 34 during assembly, preventing the magnetic part 34 from debonding and breaking under working conditions such as high-speed impact, which would affect the normal operation of the entire machine.

[0109] In one embodiment, the partition 35 and the primary assembly 2 enclose at least a portion of the second cavity 102 .

[0110] It is understandable that the partition 35 and the primary assembly 2 enclose a second cavity 102 to improve the utilization of the internal space of the motor 1 .

[0111] In one embodiment, see Figure 6 The secondary assembly 3 is provided with a second air nozzle 50 , and the second air nozzle 50 is suitable for communicating with the second cavity 102 for inflation or deflation.

[0112] The second gas nozzle 50 is further provided with a second valve body, and the second valve body regulates the opening or closing of the second gas nozzle 50 .

[0113] It can be understood that the air pressure in the second cavity 102 is adjusted by the second air nozzle 50 so that the second cavity 102 promotes the relative movement between the secondary assembly 3 and the primary assembly 2 .

[0114] In one embodiment, see Figure 6 and Figure 9 The secondary assembly 3 further includes a lower fork arm 33 mounted on the housing 32 , wherein the lower fork arm 33 is suitable for connecting to the wheel end, wherein the lower fork arm 33 is provided with the second air nozzle 50 .

[0115] The opening direction of the second gas nozzle 50 may be the same as the axial direction.

[0116] It is understandable that the second air nozzle 50 is disposed on the lower fork arm 33 , and the lower fork arm 33 is located directly below the second cavity 102 , which facilitates the formation of the second air nozzle 50 , simplifies the manufacturing process, and reduces the cost.

[0117] In one embodiment, see Figure 6 、 Figure 7 、 Figure 8 The secondary component 3 also includes a piston guide rod 31, one end of which is movably installed in the primary component 2, wherein the other end of the piston guide rod 31 is installed on the lower fork arm 33.

[0118] It can be understood that the two ends of the piston guide rod 31 are respectively fixed to the lower fork arm 33 and movably installed on the primary component 2. The piston guide rod 31 is used to control the volume of the first cavity 101 during the relative movement of the primary component 2 and the secondary component 3, so that the first cavity 101 cooperates with the first air nozzle 40 to promote the relative movement of the secondary component 3 and the primary component 2.

[0119] In one embodiment, see Figure 7 、 Figure 8 、 Figure 9The other end of the piston guide rod 31 is provided with a limiting hole 60, the lower fork arm 33 is provided with a limiting protrusion 39, and the second air nozzle 50 passes through the limiting protrusion 39; wherein, the limiting protrusion 39 passes through the limiting hole 60.

[0120] It is understandable that, through the cooperation between the limiting hole 60 and the limiting protrusion 39 , the piston guide rod 31 is more tightly connected to the lower fork arm 33 , thereby enhancing the connection strength between the piston guide rod 31 and the lower fork arm 33 .

[0121] In one embodiment, the second air nozzle 50 is disposed on the housing 32 .

[0122] It is understandable that by disposing the second air nozzle 50 on the housing 32 , the lower fork arm 33 does not need to be additionally formed with the second air nozzle 50 , thereby enhancing the structural strength of the lower fork arm 33 .

[0123] According to a second aspect of the present disclosure, a suspension is provided, comprising the motor 1 as described in any one of the above embodiments.

[0124] According to a third aspect of the present disclosure, a vehicle is provided, which includes the motor 1 or the suspension of any of the above embodiments. The vehicle has all the beneficial effects of the motor 1 or the suspension of any embodiment, which will not be described in detail in the present disclosure.

[0125] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this disclosure does not make any specific limitations on this.

[0126] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify 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, "plurality" means two or more, unless otherwise specifically defined.

[0127] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0128] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0129] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications 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 are still within the scope of the technical solution of the present application.

Claims

1. A motor (1), comprising: A primary assembly (2) and a secondary assembly (3), wherein the secondary assembly (3) and the primary assembly (2) are adapted for relative movement; A cavity (10) is provided in the motor (1), and when the secondary component (3) and the primary component (2) perform relative motion, the cavity (10) is filled with a medium or discharged with a medium to promote the relative motion of the secondary component (3) and the primary component (2).

2. The electric motor (1) according to claim 1, characterized in that The cavity (10) comprises a first cavity (101) and a second cavity (102), and the first cavity (101) and the second cavity (102) are independently arranged.

3. The electric motor (1) according to claim 1, characterized in that The cavity comprises a first cavity (101), and the first cavity (101) is arranged in the primary component (2).

4. The electric motor (1) according to claim 3, characterized in that The primary assembly (2) comprises a primary core shaft (21), wherein the primary core shaft (21) comprises a first core shaft portion (201), wherein the first cavity (101) is disposed within the first core shaft portion (201).

5. The electric motor (1) according to claim 4, characterized in that The primary assembly (2) further includes a primary iron core (22), wherein the primary iron core (22) is mounted on the outer peripheral side of the first core shaft portion (201).

6. The electric motor (1) according to claim 5, characterized in that The primary assembly (2) further includes a first buffer (26), which is sleeved on the outer peripheral side of the primary core shaft (21); wherein the first buffer (26) is located on one side of the primary iron core (22) in the axial direction and is suitable for abutting the secondary assembly (3) to buffer the primary iron core (22).

7. The electric motor (1) according to claim 4, characterized in that The primary assembly (2) is provided with a first air nozzle (40), and the first air nozzle (40) is suitable for communicating with the first cavity (101) for inflation or deflation.

8. The electric motor (1) according to claim 7, characterized in that The primary core shaft (21) comprises a second core shaft portion (202) connected to one end of the first core shaft portion (201), wherein the second core shaft portion (202) is suitable for connecting to the vehicle body end, wherein the first air nozzle (40) is arranged in the second core shaft portion (202).

9. The electric motor (1) according to claim 3, characterized in that The secondary assembly (3) comprises a piston guide rod (31), one end of which is movably mounted in the primary assembly (2) to enclose at least a portion of the first cavity (101) together with the primary assembly (2).

10. The electric motor (1) according to claim 9, characterized in that A first sealing member (38) is provided on the outer peripheral side of the one end of the piston guide rod (31), and the first sealing member (38) abuts against the cavity wall of the first cavity (101) to seal the first cavity (101).

11. The electric motor (1) according to claim 9, characterized in that The secondary component (3) comprises a second buffer (36), and the second buffer (36) is suitable for abutting against the primary component (2) along the axial direction of the motor (1) to buffer the primary component (2).

12. The electric machine (1) according to claim 11, characterized in that The second buffer member (36) is sleeved on the outer peripheral side of the other end of the piston guide rod (31).

13. The electric motor (1) according to claim 9, characterized in that The primary assembly (2) further comprises a locking member (24), which is mounted on the primary assembly (2) and is adapted to abut against one end of the piston guide rod (31) to axially limit the movement of the piston guide rod (31).

14. The electric machine (1) according to claim 13, characterized in that The primary assembly (2) further comprises a primary core shaft (21) and a primary iron core (22), wherein the locking member (24) is mounted on the primary core shaft (21) to mount the primary iron core (22) on the primary core shaft (21).

15. The electric machine (1) according to claim 13, characterized in that A second sealing member (25) is provided on the outer peripheral side of the locking member (24), and a second cavity (102) is also provided in the motor (1). The second sealing member (25) abuts against the cavity wall of the second cavity (102) to seal the second cavity (102).

16. The electric machine (1) according to claim 1, characterized in that The cavity (10) comprises a second cavity (102), and the second cavity (102) is arranged in the secondary component (3).

17. The electric machine (1) according to claim 16, characterized in that The secondary component (3) comprises a shell (32), and the primary component (2) is movably arranged in the shell (32) to enclose at least a part of the second cavity (102) with the secondary component (3).

18. The electric machine (1) according to claim 17, characterized in that The secondary component (3) further comprises a magnetic member (34) and a partition (35) mounted on the housing (32), wherein the magnetic member (34) is adapted to move under the drive of the primary component (2) and is sleeved on the outer peripheral side of the primary component (2), wherein the partition (35) is arranged between the primary component (2) and the magnetic member (34).

19. The electric machine (1) according to claim 18, characterized in that The partition (35) and the primary assembly (2) enclose at least a portion of the second cavity (102).

20. The electric machine (1) according to claim 16, characterized in that The secondary assembly (3) is provided with a second air nozzle (50), and the second air nozzle (50) is suitable for communicating with the second cavity (102) for inflation or deflation.

21. The electric machine (1) according to claim 20, characterized in that The secondary assembly (3) further comprises a lower fork arm (33) mounted on the housing (32), wherein the lower fork arm (33) is suitable for connecting with a wheel end, wherein the lower fork arm (33) is provided with the second air nozzle (50).

22. The electric machine (1) according to claim 21, characterized in that The secondary assembly (3) further comprises a piston guide rod (31), one end of which is movably mounted in the primary assembly (2), wherein the other end of the piston guide rod (31) is mounted on the lower fork arm (33).

23. The electric machine (1) according to claim 22, characterized in that The other end of the piston guide rod (31) is provided with a limiting hole (60), the lower fork arm (33) is provided with a limiting protrusion (39), and the second gas nozzle (50) passes through the limiting protrusion (39); wherein, the limiting protrusion (39) passes through the limiting hole (60).

24. The electric machine (1) according to claim 20, characterized in that The second air nozzle (50) is disposed on the housing (32).

25. A suspension, characterized in that: The invention comprises a motor (1) according to any one of claims 1 to 24.

26. A vehicle, characterized in that: The motor (1) comprises the motor (1) according to any one of claims 1 to 24, or comprises the suspension according to claim 25.

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