Waist support motor for new energy automobile seat

Abstract

The invention relates to a waist support motor for a new energy automobile seat, and belongs to the technical field of motors, and the waist support motor comprises a stator housing, one end of the stator housing is provided with an opening, one side of an insulating end cover is assembled at the opening, the other side of the insulating end cover is detachably assembled with an abutting member, a rotor is arranged in the stator housing, and one end of the rotor extends to the outside of the other end of the stator housing. One end of the insulating end cover is provided with a buffering part capable of releasing a buffering solution, the buffering part is in contact with the abutting part, and when the rotor generates axial force, the buffering part extrudes the buffering solution and buffers axial impact on the insulating end cover, and meanwhile the buffering solution is released to lubricate the abutting part. After the rotor is subjected to axial pressure, the axial impact generated by the rotor on the insulating end cover can drive the buffer part to extrude the buffer solution, so that the impact of the rotor on the collision part is buffered, and meanwhile, when a little buffer solution is released, a gap between the other end of the rotor and the collision part can be lubricated, so that the abrasion of the collision part is reduced.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a lumbar support motor for a new energy vehicle seat. Background Art

[0002] Motors play a vital role in our daily lives. Existing motors generally refer to devices that convert electrical energy into mechanical energy. There are many types of existing motors. On the premise of converting electrical energy into mechanical energy, the speed and rotation angle position can also be precisely controlled.

[0003] Electromagnetic compatibility (EMC) refers to the ability of a device or system to work normally in its electromagnetic environment and not generate intolerable electromagnetic interference to other devices in the environment. When the motor is working, the motor performance is closely related to the EMC effect and filter effect of the motor in actual use.

[0004] During the use of existing motors, especially in massage seats of new energy vehicles, the lumbar support motor is used in the massage seat drive unit. When the lumbar support motor rotates, one end of the rotor will be subjected to axial pressure, which will easily cause axial displacement and generate axial force on the motor end cover. In severe cases, the end cover may even be penetrated. Summary of the invention

[0005] The present application provides a lumbar support motor for a new energy vehicle seat, which can solve the problem that when the existing motor rotates at a high frequency, the axial impact force of the rotor shaft inside the motor on the motor end cover is relatively large, resulting in greater wear.

[0006] The technical solution of the present application is as follows: A lumbar support motor for a new energy vehicle seat, comprising: A stator housing, wherein one end of the stator housing is provided with an opening; An insulating end cover, one side of which is assembled at the opening, and the other side of which is detachably assembled with a resisting member; The rotor is arranged inside the stator housing, one end of the rotor extends to the outside of the other end of the stator housing, and the other end is provided with a buffer component that can release a buffer. The buffer component is in contact with a resistance component. When the rotor generates an axial force, the buffer component squeezes the buffer component and buffers the axial impact on the insulating end cover, and at the same time releases the buffer component to lubricate the resistance component.

[0007] By adopting the above scheme, a buffer member capable of releasing a buffer is arranged inside the other end of the rotor. After the rotor is subjected to axial pressure, the axial impact of the rotor on the insulating end cover will drive the buffer member to squeeze the buffer, thereby buffering the impact of the rotor on the resistance member. At the same time, a small amount of the buffer can lubricate the gap between the other end of the rotor and the resistance member when it is released, thereby reducing the wear of the resistance member.

[0008] In one embodiment of the present application, the resisting member comprises: a first annular gasket; A second annular gasket, the second annular gasket is concentrically assembled on one side of the first annular gasket, the diameter of the first annular gasket is larger than the diameter of the second annular gasket, a cylindrical chamber is opened inside one side of the insulating end cover, and the inner wall of the bottom end of the cylindrical chamber is coaxially provided with a first thread groove and a second thread groove with the same thread direction, the diameter of the first thread groove is larger than the diameter of the second thread groove, the first annular gasket is threadedly screwed into the first thread groove, and the second annular gasket is threadedly screwed into the second thread groove.

[0009] By adopting the above scheme, by adopting an assembly method of stacking two annular gaskets, the two annular gaskets are screwed into the first thread groove and the second thread groove in a one-to-one corresponding manner. When the annular gaskets are subjected to pressure, due to the inconsistent diameters of the first thread groove and the second thread groove, the groove wall of the second thread groove can effectively offset part of the stress on the resistance part, thereby increasing the service life of the resistance part.

[0010] In one embodiment of the present application, a sealing cover is provided on the outside of the other side of the insulating end cover, and an adjusting piece is threadedly screwed on the sealing cover. The thread direction of the adjusting piece is the same as the first thread groove and the second thread groove. The diameter of the adjusting piece is smaller than the diameter of the second annular gasket. One end of the adjusting piece is in contact with the second annular gasket and drives the second annular gasket to rotate through the protrusion.

[0011] By adopting the above scheme, the device can utilize an adjusting part. After the resistance part is worn out due to long-term use, the adjusting part can be rotated to drive the resistance part to be screwed out from the first thread groove and the second thread groove until the first annular gasket contacts the other end of the rotor again, thereby improving the service life of the resistance part inside the device.

[0012] In one embodiment of the present application, the protrusion is eccentrically arranged on a side of the adjusting member close to the second annular gasket, and the second annular gasket is provided with an annular tooth groove corresponding to the protrusion.

[0013] By adopting the above scheme, when the adjusting member rotates, the protrusion can be driven to move, and the protrusion is stuck in the second annular gasket, so that when the adjusting member rotates, the second annular gasket and the first annular gasket are synchronously driven to rotate, so that the interference member can be removed from the first thread groove and the second thread groove, which is convenient for the device to replace the interference member.

[0014] In one embodiment of the present application, a liquid storage tank is provided at the other end of the rotor, and the liquid storage tank comprises: The straight section is a columnar cavity and is coaxially arranged inside the other end of the rotor; The arc section is a hemispherical cavity. The arc section is arranged inside the other end of the rotor. One end is coaxially assembled to one end of the straight section, and the other end is provided with a circular opening. At the connection between the arc section and the straight section, there are recesses arranged at circumferential intervals, and the recesses extend along the radial direction of the straight section; The buffer member is a hemispherical component that fits the shape of the arc section. The diameter d1 of the circular opening, the diameter d2 of the buffer member, and the diameter d3 of the arc section satisfy d1 < d2 = d3. The buffer liquid is filled inside the straight section.

[0015] By adopting the above scheme, a liquid storage tank is arranged at the other end of the rotor. When the rotor is axially impacted, it can drive the buffer member located inside the arc section to move in a direction away from the circular opening. Since both the buffer member and the arc section are hemispherical components, when the buffer member moves from the arc section towards the straight section, the buffer liquid inside the recess at the connection between the straight section and the arc section can seep out along the spherical surface of the buffer member, thereby being able to buffer the impact of the rotor on the abutting member. At the same time, the seeping buffer liquid can lubricate the contact surface between the abutting member and the rotor, reducing the wear of the abutting member.

[0016] In one embodiment of the present application, a ring-shaped inclined surface is coaxially provided on one side of the first annular gasket. The side of the buffer member away from the straight section abuts against the ring-shaped inclined surface. The diameter d4 of the ring-shaped inclined surface and the diameter d2 of the buffer member satisfy: d4 < d2.

[0017] By adopting the above scheme, a ring-shaped inclined surface is provided on the first annular gasket, and the hemispherical buffer member can be fitted into the ring-shaped inclined surface. Thus, when the first annular gasket is axially impacted, the force received by the ring-shaped inclined surface will not be concentrated at one point, and the pressure generated when the first annular gasket is under pressure can be effectively reduced.

[0018] In one embodiment of the present application, a rotary seal is provided between the other end of the rotor and the columnar chamber. The rotary seal is located on the side of the buffer member away from the abutting member. A vertically arranged liquid discharge channel is provided inside the insulating end cover. A concave surface is provided on the lower inner wall of the columnar chamber. One end of the liquid discharge channel extends to the concave surface and communicates with the columnar chamber, and the other end extends to the outside of the insulating end cover.

[0019] By adopting the above scheme, even when the buffer member undergoes axial displacement due to axial impact, at this time, the buffer liquid seeps out and will eventually flow to the concave surface under the action of gravity. The buffer liquid can be discharged outside the insulating end cover at the liquid discharge channel, thereby completing the automatic discharge of the buffer liquid.

[0020] In one embodiment of the present application, the stator housing further includes a filter unit and a plug connector. The filter unit is fixedly mounted on the inner wall of one end of the stator housing close to the insulating end cover through a grounding piece, and the plug connector is mounted on the outside of one side of the stator housing and is electrically connected to the filter unit.

[0021] By adopting the above solution, a filter unit is set up so that before the current enters the device and enters the coil in the rotor, the filter unit can provide filtering for the device, thereby optimizing the electromagnetic compatibility effect. At the same time, a plug connector electrically connected to the filter unit is set up to shorten the distance of the wires and save costs.

[0022] In one embodiment of the present application, the grounding member includes four conductive sheets, which are spaced apart along the circumference of the stator housing and equidistantly mounted on the inner wall of the stator housing, and the conductive sheets are connected to the filter unit.

[0023] By adopting the above scheme, four conductive sheets are arranged on the inner wall of the stator housing, and the filter unit is assembled on the conductive sheets, so that the current of the filter unit is transmitted to the conductive sheets and finally reaches the stator housing. The filter unit can be grounded, and the quality uniformity of the entire stator housing is improved by equidistantly arranging the conductive sheets.

[0024] In one embodiment of the present application, a columnar liquid replenishing tank is provided inside the adjusting member, a rotating column is screwed into the internal thread of the liquid replenishing tank, the buffer solution is provided between the rotating column and the liquid replenishing tank, a liquid outlet is provided at the bottom of the liquid replenishing tank, the liquid outlet is coaxially arranged with the first annular gasket and the second annular gasket, and is connected with the columnar chamber.

[0025] By adopting the above scheme, a liquid replenishing tank is provided, and a buffer solution is also filled inside the liquid replenishing tank. When the motor is working, the buffer member at the other end of the rotor always presses against the annular inclined surface of the first annular gasket. By rotating the rotating column, the rotating column can squeeze the buffer solution inside the liquid replenishing tank. The buffer solution can generate pressure on the buffer member and share a part of the impact force generated by the buffer member on the first annular gasket when axial displacement occurs, and can also lubricate the buffer member and the first annular gasket.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: By arranging a buffer part on the other end of the rotor, when the rotor is subjected to axial pressure, the rotor produces a circumferential impact on the resistance part, thereby squeezing the buffer solution inside the buffer part. The reaction force provided by the buffer solution after being squeezed can buffer the impact on the resistance part to a certain extent. At the same time, the seeping buffer solution can effectively lubricate the gap between the resistance part and the buffer part, thereby reducing the wear of the resistance part.

[0027] 2. By setting the first thread groove and the second thread groove, and simultaneously setting the abutment formed by the first annular gasket and the second annular gasket, when the first annular gasket and the second annular gasket are impacted, the groove wall of the second thread groove can effectively offset part of the stress on the abutment, thereby improving the stability of the first annular gasket and the second annular gasket when in use.

[0028] 3. By setting an adjusting piece, when the resistance piece inside the device is severely worn and needs to be replaced, by rotating the adjusting piece, the adjusting piece can drive the first annular gasket and the second annular gasket to rotate through the cooperation between the protrusion and the annular tooth groove, until the first thread groove and the second thread groove are screwed out, so that the device can easily remove the resistance piece from the insulating end cover, thereby improving the convenience of replacing the resistance piece.

[0029] 4. By providing a conductive sheet and a filter unit, the conductive sheet inside the device can ground the filter unit and cooperate with the filtering function of the filter unit itself, which can effectively improve the electromagnetic compatibility effect of the motor.

[0030] 5. By setting up a liquid replenishing tank and rotating the rotating column, the buffer solution inside the liquid replenishing tank can always maintain pressure on the buffer part. When the buffer part has an axial impact or a tendency to produce a circumferential impact on the resistance part, the buffer solution inside the liquid replenishing tank can effectively offset part of the impact pressure of the buffer part on the resistance part, thereby further protecting the resistance part and increasing the service life of the resistance part. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front cross-sectional view of a lumbar support motor for a new energy vehicle seat provided in the first embodiment of the present application; Figure 2 yes Figure 1 A magnified schematic diagram of part A; Figure 3 It is a front cross-sectional view of a buffer component of a lumbar support motor for a new energy vehicle seat provided in the first embodiment of the present application; Figure 4 This is a front view of a first annular gasket and a second annular gasket for a lumbar support motor for a new energy vehicle seat provided in the first embodiment of the present application; Figure 5 It is a raised front view of a lumbar support motor for a new energy vehicle seat provided in the first embodiment of the present application; Figure 6 It is a side view of a conductive sheet of a lumbar support motor for a new energy vehicle seat provided in the first embodiment of the present application; Figure 7 It is a front cross-sectional view of a lumbar support motor for a new energy vehicle seat provided in the second embodiment of the present application; Figure 8 yes Figure 7 Schematic diagram of the enlarged portion B.

[0032] Explanation of the reference numerals: 1. stator housing; 11. opening; 12. filter unit; 13. plug connector; 14. grounding member; 141. conductive sheet; 2. insulating end cover; 21. abutment member; 211. first annular gasket; 2111. annular slope; 212. second annular gasket; 2121. annular tooth groove; 22. columnar chamber; 221. first thread groove; 222. second thread groove; 223. rotating seal; 23. cover; 231. adjusting member; 2311. liquid replenishing tank; 2312. rotating column; 2313. liquid outlet; 232. protrusion; 2324. liquid discharge channel; 25. concave surface; 3. rotor; 31. buffer member; 32. liquid storage tank; 321. straight section; 322. arc section; 3221. circular opening; 3222. depression; 4. buffer. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-8 The lumbar support motor for a new energy vehicle seat provided in the present application is further described in detail. Embodiment 1:

[0034] A lumbar support motor for a new energy vehicle seat provided in an embodiment of the present application includes: a stator housing 1, an insulating end cover 2 and a rotor 3.

[0035] See also Figure 1 , Figure 2 and Figure 3 An opening 11 is provided at one end of the stator housing 1, one side of the insulating end cover 2 is assembled at the opening 11, and a resistance member 21 is detachably assembled on the other side of the insulating end cover 2. The rotor 3 is arranged inside the stator housing 1, one end of which extends to the outside of the other end of the stator housing 1, and the other end is provided with a buffer member 31 capable of releasing a buffer 4. The buffer member 31 contacts the resistance member 21. When the rotor 3 generates an axial force, the buffer member 31 squeezes the buffer 4 and buffers the axial impact on the insulating end cover 2, and releases the buffer 4 to lubricate the resistance member 21. A buffer member 31 capable of releasing the buffer 4 is arranged inside the other end of the rotor 3, so that the impact of the rotor 3 on the resistance member 21 is buffered, and the gap between the other end of the rotor 3 and the resistance member 21 can be lubricated, thereby reducing the wear of the resistance member 21.

[0036] In this embodiment, the stator housing 1 is provided with a plurality of magnetic tiles arranged circumferentially along the inner wall of the stator housing 1, a plurality of magnetic tiles are arranged on the outside of the rotor 3, and a commutation unit is also provided at the other end of the rotor 3, wherein the arrangement of the magnetic tiles and the arrangement of the commutation unit are both existing conventional technologies, and therefore will not be elaborated here.

[0037] See also Figure 1 The stator housing 1 also includes a filter unit 12 and a plug connector 13. The filter unit 12 is fixedly assembled on the inner wall of one end of the stator housing 1 close to the insulating end cover 2 through a grounding piece 14. The plug connector 13 is assembled on the outside of one side of the stator housing 1 and is electrically connected to the filter unit 12. The filter unit 12 can provide filtering for the device and optimize the electromagnetic compatibility effect. At the same time, the plug connector 13 electrically connected to the filter unit 12 is provided to shorten the distance of the wires and save costs.

[0038] The filter unit 12 may be a flexible circuit board engraved with a filter circuit. The configuration of the filter unit 12 is conventional technology, so it will not be described in detail here.

[0039] See also Figure 6 The grounding member 14 includes four conductive sheets 141, which are spaced apart along the circumference of the stator housing 1 and are equidistantly mounted on the inner wall of the stator housing 1. The conductive sheets 141 are connected to the filter unit 12. By arranging the four conductive sheets 141 on the inner wall of the stator housing 1, the filter unit 12 can be grounded, and by arranging the conductive sheets 141 equidistantly, the quality uniformity of the entire stator housing 1 is improved.

[0040] The conductive sheet 141 may be a copper sheet.

[0041] See also Figure 2 The resisting member 21 comprises: a first annular gasket 211 and a second annular gasket 212, wherein the second annular gasket 212 is concentrically assembled on one side of the first annular gasket 211, the diameter of the first annular gasket 211 is larger than the diameter of the second annular gasket 212, a columnar chamber 22 is opened inside one side of the insulating end cover 2, the inner wall of the bottom end of the columnar chamber 22 is coaxially provided with a first thread groove 221 and a second thread groove 222 with the same thread direction, the diameter of the first thread groove 221 is larger than the diameter of the second thread groove 222, the first annular gasket 211 is threadedly screwed into the first thread groove 221, and the second annular gasket 212 is threadedly screwed into the second thread groove 222, by screwing the two annular gaskets one by one into the first thread groove 221 and the second thread groove 222, the groove wall of the second thread groove 222 can effectively offset part of the stress on the resisting member 21, thereby improving the structural strength of the resisting member 21.

[0042] In this embodiment, both the first annular gasket 211 and the second annular gasket 212 may be annular gaskets made of polyetheretherketone material.

[0043] Please continue reading Figure 2, on the outer side of the other side of the insulating end cap 2, there is a cover 23. A regulating member 231 is screwed onto the cover 23. The thread direction of the regulating member 231 is the same as that of the first thread groove 221 and the second thread groove 222. The diameter of the regulating member 231 is smaller than the diameter of the second annular gasket 212. One end of the regulating member 231 contacts the second annular gasket 212 and drives the second annular gasket 212 to rotate through a protrusion 232. By rotating the regulating member 231, the abutting member 21 can be driven to screw out inside the first thread groove 221 and the second thread groove 222, so that the position of the internal abutting member 21 of the device can be adjusted.

[0044] Please continue to refer to Figure 2 , the protrusion 232 is eccentrically arranged on the side of the regulating member 231 close to the second annular gasket 212. An annular tooth groove 2121 corresponding to the protrusion is provided on the second annular gasket 212. By using the protrusion 232 to be inserted into the second annular gasket 212, when the regulating member 231 rotates, the second annular gasket 212 and the first annular gasket 211 can be synchronously driven to rotate, which is convenient for disassembly.

[0045] Please refer to Figure 3 and Figure 5 , on the other end of the rotor 3, a liquid storage tank 32 is provided. The liquid storage tank 32 includes: a straight section 321 and an arc section 322. The straight section 321 is a columnar cavity and is coaxially arranged inside the other end of the rotor 3. The arc section 322 is a hemispherical cavity. The arc section 322 is arranged inside the other end of the rotor 3. One end is coaxially assembled to one end of the straight section 321, and the other end is provided with a circular opening 3221. At the connection between the arc section 322 and the straight section 321, there are circumferentially spaced depressions 3222. The depressions 3222 extend along the radial direction of the straight section 321. The buffer member 31 is a hemispherical member that fits the shape of the arc section 322. The diameter d1 of the circular opening 3221, the diameter d2 of the buffer member 31, and the diameter d3 of the arc section 322 satisfy d1 < d2 = d3. The buffer liquid 4 is filled inside the straight section 321. By providing the liquid storage tank 32 at the other end of the rotor 3, when the rotor 3 is axially impacted, the buffer member 31 located inside the liquid storage tank 32 can be driven to move towards the straight section 321, and then part of the buffer liquid 4 can be extruded and driven to seep out from the depressions 3222. During the extrusion process, the impact of the rotor 3 on the abutting member 21 can be buffered, and at the same time, the contact surface between the abutting member 21 and the rotor 3 can be lubricated, reducing the wear of the abutting member 21.

[0046] Please refer to Figure 4, a ring-shaped inclined surface 2111 is coaxially provided on one side of the first annular gasket 211. The side of the buffer member 31 away from the straight section 321 abuts against the ring-shaped inclined surface 2111. The diameter d4 of the ring-shaped inclined surface 2111 and the diameter d2 of the buffer member 31 satisfy: d4 < d2. When the hemispherical buffer member 31 impacts the abutting member 21, the buffer member 31 fits the surface of the ring-shaped inclined surface 2111, so that the pressure generated when the first annular gasket 211 is subjected to pressure can be effectively reduced.

[0047] Please continue to refer to Figure 2 , a rotary seal 223 is provided between the other end of the rotor 3 and the cylindrical chamber 22. The rotary seal 223 is located on the side of the buffer member 31 away from the abutting member 21. A vertically arranged liquid discharge channel 2324 is provided inside the insulating end cover 2. A concave surface 25 is provided on the lower inner wall of the cylindrical chamber 22. One end of the liquid discharge channel 2324 extends to the concave surface 25 and communicates with the cylindrical chamber 22, and the other end extends to the outside of the insulating end cover 2. Even when the buffer member 31 undergoes an axial displacement due to an axial impact, the buffer liquid 4 will flow to the concave surface 25 under the action of gravity, and finally the buffer liquid 4 is discharged outside the insulating end cover 2 at the liquid discharge channel 2324. Embodiment 2:

[0048] The structure of Embodiment 2 is basically the same as that of Embodiment 1, and the difference lies in: Please refer to Figure 7 and Figure 8 , a cylindrical liquid replenishment chamber 2311 is further provided inside the adjusting member 231. A rotating column 2312 is screwed inside the liquid replenishment chamber 2311. The buffer liquid 4 is provided inside between the rotating column 2312 and the liquid replenishment chamber 2311. A liquid outlet hole 2313 is provided at the bottom of the liquid replenishment chamber 2311. The liquid outlet hole 2313 is coaxially arranged with the first annular gasket 211 and the second annular gasket 212 and communicates with the cylindrical chamber 22. By rotating the rotating column 2312, the rotating column 2312 can squeeze the buffer liquid 4 inside the liquid replenishment chamber 2311. The buffer liquid 4 can generate pressure on the buffer member 31 and share a part of the impact force generated by the buffer member 31 on the first annular gasket 211 when the buffer member 31 undergoes an axial displacement. At the same time, it can also lubricate the buffer member 31 and the first annular gasket 211.

[0049] In summary, when the motor is working and generates axial displacement, the other end of the rotor 3 impacts the abutment 21. At this time, the buffer 31 is subjected to the reaction force and squeezes the buffer 4. The buffer 4 can provide buffering. Since the hemispherical buffer 31 is separated from the cooperation with the hemispherical arc segment 322, the buffer 4 located at the recess 3222 can flow out along the spherical surface of the buffer 31 until it flows through the contact surface between the buffer 31 and the abutment 21, thereby playing the role of lubricating the abutment 21. At the same time, by providing the filter unit 12 and welding the filter unit 12 to the stator housing 1 using the conductive sheet 141, the filter unit 12 can be grounded for use, thereby optimizing the electromagnetic compatibility of the motor; In addition, four equidistantly distributed conductive sheets 141 are provided to ensure the uniformity of the quality of the stator housing 1 and improve the stability of the device during use.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lumbar support motor for a new energy vehicle seat, characterized in that: include: A stator housing (1), wherein one end of the stator housing (1) is provided with an opening (11); An insulating end cover (2), one side of the insulating end cover (2) being assembled at the opening (11), and the other side of the insulating end cover (2) being detachably assembled with a resisting member (21); A rotor (3), wherein the rotor (3) is arranged inside the stator housing (1), one end of the rotor (3) extends to the outside of the other end of the stator housing (1), and the other end is provided with a buffer (31) capable of releasing a buffer (4), wherein the buffer (31) contacts a resisting member (21), and when the rotor (3) generates an axial force, the buffer (31) squeezes the buffer (4) and buffers the axial impact on the insulating end cover (2), while releasing the buffer (4) to lubricate the resisting member (21).

2. The lumbar support motor for a new energy vehicle seat according to claim 1 is characterized in that: The resisting member (21) comprises: A first annular gasket (211); A second annular gasket (212), the second annular gasket (212) is coaxially assembled on one side of the first annular gasket (211), the diameter of the first annular gasket (211) is larger than the diameter of the second annular gasket (212), a columnar chamber (22) is provided inside one side of the insulating end cover (2), a first thread groove (221) and a second thread groove (222) having the same thread direction are coaxially arranged on the inner wall of the bottom end of the columnar chamber (22), the diameter of the first thread groove (221) is larger than the diameter of the second thread groove (222), the first annular gasket (211) is threadedly screwed into the first thread groove (221), and the second annular gasket (212) is threadedly screwed into the second thread groove (222).

3. The lumbar support motor for a new energy vehicle seat according to claim 2 is characterized in that: A sealing cover (23) is provided on the other side of the insulating end cover (2), and an adjusting member (231) is screwed on the sealing cover (23). The thread direction of the adjusting member (231) is the same as that of the first thread groove (221) and the second thread groove (222). The diameter of the adjusting member (231) is smaller than the diameter of the second annular gasket (212). One end of the adjusting member (231) contacts the second annular gasket (212) and drives the second annular gasket (212) to rotate via the protrusion (232).

4. The lumbar support motor for a new energy vehicle seat according to claim 3 is characterized in that: The protrusion (232) is eccentrically arranged on a side of the adjusting member (231) close to the second annular gasket (212), and the second annular gasket (212) is provided with an annular tooth groove (2121) corresponding to the protrusion (232).

5. The lumbar support motor for a new energy vehicle seat according to claim 1 is characterized in that: The other end of the rotor (3) is provided with a liquid storage tank (32), and the liquid storage tank (32) comprises: A straight section (321), the straight section (321) being a cylindrical cavity and coaxially arranged inside the other end of the rotor (3); An arc segment (322), the arc segment (322) is a hemispherical cavity, the arc segment (322) is arranged inside the other end of the rotor (3), one end is coaxially assembled with one end of the straight segment (321), the other end is provided with a circular opening (3221), and a circumferentially spaced recess (3222) is provided at the connection between the arc segment (322) and the straight segment (321), and the recess (3222) extends radially along the straight segment (321); The buffer member (31) is a hemispherical member that fits the shape of the arc segment (322). The diameter d1 of the circular opening (3221), the diameter d2 of the buffer member (31), and the diameter d3 of the arc segment (322) satisfy d1 < d2 = d3, and the buffer liquid (4) is filled inside the straight segment (321).

6. The lumbar support motor for a new energy vehicle seat according to claim 2 is characterized in that: One side of the first annular gasket (211) is coaxially provided with an annular inclined surface (2111). The side of the buffer member (31) away from the straight segment (321) abuts against the annular inclined surface (2111). The diameter d4 of the annular inclined surface (2111) and the diameter d2 of the buffer member (31) satisfy: d4 < d2.

7. The lumbar support motor for a new energy vehicle seat according to claim 2 is characterized in that: A rotary seal (223) is provided between the other end of the rotor (3) and the columnar chamber (22). The rotary seal (223) is located on the side of the buffer member (31) away from the abutting member (21). A vertically arranged liquid discharge channel (2324) is provided inside the insulating end cover (2). A concave surface (25) is provided on the lower inner wall of the columnar chamber (22). One end of the liquid discharge channel (2324) extends to the concave surface (25) and communicates with the columnar chamber (22), and the other end extends to the outside of the insulating end cover (2).

8. The lumbar support motor for a new energy vehicle seat according to claim 1 is characterized in that: The stator housing (1) further includes a filtering unit (12) and a plug connector (13). The filtering unit (12) is fixedly assembled on the inner wall of one end of the stator housing (1) close to the insulating end cover (2) through a grounding member (14). The plug connector (13) is assembled on the outside of one side of the stator housing (1) and is electrically connected to the filtering unit (12).

9. The lumbar support motor for a new energy vehicle seat according to claim 8, characterized in that: The grounding member (14) includes four conductive sheets (141). The conductive sheets (141) are circumferentially spaced along the stator housing (1) and are equidistantly assembled on the inner wall of the stator housing (1). The conductive sheets (141) are connected to the filtering unit (12).

10. The lumbar support motor for a new energy vehicle seat according to claim 3, characterized in that: A columnar liquid replenishment chamber (2311) is further provided inside the adjusting member (231). A rotating column (2312) is screwed inside the liquid replenishment chamber (2311). The buffer liquid (4) is provided inside the rotating column (2312) and the liquid replenishment chamber (2311). A liquid outlet hole (2313) is provided at the bottom of the liquid replenishment chamber (2311). The liquid outlet hole (2313) is coaxially arranged with the first annular gasket (211) and the second annular gasket (212) and communicates with the columnar chamber (22).

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