Stator assemblies, motors, electromagnetic shock absorbers, suspension systems and vehicles

Abstract

The present invention discloses a stator assembly, a motor, an electromagnetic vibration damper, a suspension system, and a vehicle. The stator assembly comprises a center rod, an iron core, and a buffer. The iron core is sleeved outside the center rod, and the buffer is connected to the center rod and disposed at one axial end of the iron core. According to the stator assembly of the present invention, the buffer is fixed in position by connecting the buffer to the center rod. When the mover moves relative to the stator assembly, the buffer does not follow the mover, thereby reducing abnormal noise.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator assembly, a motor, an electromagnetic vibration absorber, a suspension system and a vehicle. Background Art

[0002] In the related art, the stator assembly of the linear motor includes a center rod and an iron core. When the mover moves axially relative to the stator assembly, there is an impact force between the mover and the end of the center rod, which easily causes abnormal noise. Summary of the Invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present invention provides a stator assembly with a fixed position of a buffer, which is conducive to reducing abnormal noise.

[0004] The present invention also provides a motor having the stator assembly.

[0005] The present invention also provides an electromagnetic vibration absorber having the stator assembly.

[0006] The present invention also provides a suspension system having the motor.

[0007] The present invention also provides a vehicle having the above suspension system.

[0008] The stator assembly according to an embodiment of the present invention includes: a center rod, an iron core and a buffer. The iron core is sleeved on the outside of the center rod. The buffer is connected to the center rod and is arranged at one axial end of the iron core.

[0009] According to the stator assembly of the embodiment of the present invention, the buffer is fixed in position by connecting the buffer to the center rod. When the mover moves relative to the stator assembly, the buffer does not move with the mover, which is beneficial to reducing abnormal noise.

[0010] According to some embodiments of the present invention, the central rod includes a first limiting member, and the buffer member is connected to the first limiting member.

[0011] According to some embodiments of the present invention, in the axial direction of the center rod, the first end of the first limiting member abuts against the iron core, and the second end of the first limiting member is connected to the buffer member.

[0012] According to some embodiments of the present invention, a groove is provided on the first limiting member and is recessed toward the direction of the iron core, and at least a portion of the buffer member is disposed in the groove.

[0013] According to some embodiments of the present invention, the first limiting member includes a limiting portion body, a stop portion and a connecting portion for connecting the limiting portion body and the stop portion, the stop portion and the limiting portion body are arranged opposite to each other in the axial direction of the center rod, the stop portion extends radially inward along the center rod relative to the connecting portion, the groove is surrounded by the stop portion, the connecting portion and the limiting portion body, and a part of the buffer member is clamped between the stop portion and the limiting portion body.

[0014] According to some embodiments of the present invention, the outer circumferential surface of the buffer member has a protrusion and a recess, the protrusion protruding outward in a radial direction of the center rod, and the recess recessed inward in a radial direction of the center rod.

[0015] According to some embodiments of the present invention, the protrusion and the recess are spaced apart in the axial direction of the buffer.

[0016] According to some embodiments of the present invention, the buffer member is provided with a through hole extending along the axial direction of the center rod, a guide cavity is provided on the center rod, and the through hole is connected to the guide cavity in the axial direction of the center rod.

[0017] According to some embodiments of the present invention, the center rod includes a rod body, and a second limiting member is further provided on the rod body. The first limiting member and the second limiting member are spaced apart along the axial direction of the rod body, the first end of the iron core abuts against the second limiting member, and the second end of the iron core abuts against the first limiting member.

[0018] According to some embodiments of the present invention, at least one of the first limiting member and the second limiting member is a threaded member, and the threaded member is threadedly engaged with the rod body.

[0019] According to some embodiments of the present invention, the second limiting member protrudes outward in a radial direction of the rod body.

[0020] According to some embodiments of the present invention, the limiting chamfer between the second limiting member and the rod body is spaced apart from the iron core.

[0021] According to some embodiments of the present invention, the iron core has an iron core chamfer, and the iron core chamfer is arranged opposite to the limiting chamfer.

[0022] According to some embodiments of the present invention, the size of the core chamfer is not smaller than the size of the limiting chamfer.

[0023] According to some embodiments of the present invention, the first limiting member is constructed as a threaded member and includes a first part and a second part, the first part is threadedly engaged with the rod body, the axial thickness of the first part is greater than the axial thickness of the second part, and at least part of the second part abuts against the iron core.

[0024] According to some embodiments of the present invention, the second end of the iron core has a second end surface of the iron core and an avoidance groove recessed relative to the second end surface of the iron core toward the second limiting member, and a portion of the first part extends into the avoidance groove.

[0025] According to some embodiments of the present invention, the iron core includes a plurality of winding slots spaced apart along the axial direction of the iron core; the stator assembly further includes a winding, the winding being wound in the winding slots and being wound radially along the iron core.

[0026] According to some embodiments of the present invention, the iron core is an integrated iron core, and the winding groove is radially recessed from the outer peripheral surface of the iron core; or, the iron core includes a plurality of core bodies, and the plurality of core bodies are distributed along the axial direction of the center rod, and the winding groove is formed between two adjacent core bodies.

[0027] According to some embodiments of the present invention, the iron core and the rod body are in interference fit.

[0028] According to some embodiments of the present invention, a first anti-rotation portion is provided on the outer peripheral wall of the rod body, the iron core has an inner ring surface of the iron core suitable for cooperating with the rod body, and a second anti-rotation portion is provided on the inner ring surface of the iron core. The first anti-rotation portion cooperates with the second anti-rotation portion to prevent the iron core from rotating relative to the rod body.

[0029] According to some embodiments of the present invention, the first anti-rotation portion is formed by being recessed inwardly along the radial direction of the rod body, and the second anti-rotation portion is formed by being recessed outwardly along the radial direction of the iron core. The first anti-rotation portion and the second anti-rotation portion are cooperated with each other through a limiting rod to prevent the iron core from rotating relative to the rod body.

[0030] According to some embodiments of the present invention, the projection of the first anti-rotation part on the axis of the rod body at least partially overlaps with the projection of the limiting rod on the axis of the rod body, and the projection of the second anti-rotation part on the axis of the rod body at least partially overlaps with the projection of the limiting rod on the axis of the rod body.

[0031] According to some embodiments of the present invention, the iron core is a magnetic conductive part, and the center rod is a non-magnetic conductive part.

[0032] According to a second aspect of the present invention, an electric motor is provided. The electric motor includes the stator assembly of the electric motor according to the embodiment of the first aspect of the present invention. The electric motor is a linear motor.

[0033] According to the motor of the embodiment of the present invention, using the stator assembly described in the embodiment of the first aspect of the present invention, the position of the buffer is fixed by connecting the buffer to the center rod. When the mover moves relative to the stator assembly, the buffer will not move with the mover, which is beneficial to reducing abnormal noise.

[0034] According to a third aspect of the present invention, an electromagnetic vibration absorber is provided. The motor includes the stator assembly of the motor according to the embodiment of the first aspect of the present invention.

[0035] According to the electromagnetic vibration absorber of the embodiment of the present invention, the stator assembly described in the embodiment of the first aspect of the present invention is utilized. By connecting the buffer to the center rod, the position of the buffer is fixed. When the mover moves relative to the stator assembly, the buffer will not move with the mover, which is beneficial to reducing abnormal noise.

[0036] According to a fourth aspect of the present invention, a suspension system is provided. The suspension system includes the electromagnetic vibration absorber according to the embodiment of the third aspect of the present invention.

[0037] According to the suspension system of an embodiment of the present invention, using the motor described in the embodiment of the second aspect of the present invention, the position of the buffer is fixed by connecting the buffer to the center rod. When the mover moves relative to the stator assembly, the buffer will not move with the mover, which is beneficial to reducing abnormal noise.

[0038] According to a fifth aspect of the present invention, a vehicle is provided. The vehicle includes the suspension system according to the fourth aspect of the present invention.

[0039] According to the vehicle of the embodiment of the present invention, the suspension system according to the embodiment of the third aspect of the present invention is utilized. By connecting the buffer to the center rod, the position of the buffer is fixed. When the mover moves relative to the stator assembly, the buffer does not move with the mover, which is beneficial to reducing abnormal noise.

[0040] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 2 is a schematic structural diagram of a motor according to an embodiment of the present invention.

[0042] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0043] Figure 3 3 is a schematic structural diagram of a stator assembly according to an embodiment of the present invention.

[0044] Figure 4 yes Figure 3 Cross-sectional view at the middle BB.

[0045] Figure 5 yes Figure 4 Enlarged view of point C in the middle.

[0046] Figure 6 yes Figure 4 Enlarged view of point D in the middle.

[0047] Figure 7 is a top view of a stator assembly according to an embodiment of the present invention.

[0048] Figure 8 yes Figure 7 Enlarged view of point E in the middle.

[0049] Figure 9 Schematic diagram of a multi-layer core layer being pressed onto a center rod according to an embodiment of the present invention.

[0050] Reference numerals:

[0051] Reference numerals: motor 1000;

[0052] Stator assembly 100, center rod 10, rod body 11, guide cavity 12, limiting chamfer 13, second limiting member 16, second limiting surface 161, first limiting member 17, groove 171, limiting portion body 172, connecting portion 173, stopper 174, first portion 175, second portion 176, first anti-rotation portion 18;

[0053] Iron core 20, core body 21, iron core chamfer 211, avoidance groove 212, iron core inner ring surface 213, iron core first end surface 214, iron core second end surface 215, winding groove 23, coil layer 25, second anti-rotation portion 28;

[0054] Buffer 30, protrusion 31, recess 32;

[0055] Limit rod 40;

[0056] The movable element assembly 500 , the housing 51 , the first stopper 511 , the second stopper 512 , and the guide post 52 . DETAILED DESCRIPTION

[0057] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0058] In the description of the present invention, 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 the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0059] The following combination Figures 1-9 The stator assembly 100 according to an embodiment of the present invention will be described in detail.

[0060] Reference Figure 1 As shown, a stator assembly 100 according to an embodiment of the present invention includes a center rod 10 , an iron core 20 and a buffer 30 .

[0061] The iron core 20 is sleeved on the outer side of the central rod 10 so as to set the iron core 20 on the central rod 10 .

[0062] The buffer 30 is connected to the center rod 10 and is arranged at one axial end of the iron core 20. The center rod 10 has a guide cavity 12 inside. When the stator assembly 100 is used on the motor 1000, the mover assembly 500 of the motor 1000 includes a guide column 52. The guide column 52 partially extends into the guide cavity 12 of the center rod 10, and when the mover assembly 500 moves axially relative to the stator assembly 100, the guide column 52 moves in the guide cavity 12. The buffer 30 can buffer the impact on the end of the center rod 10 to avoid the end of the stator assembly 100 from being subjected to rigid impact, thereby protecting the end of the stator assembly 100. At the same time, the buffer 30 is fixed on the center rod 10, so that the position of the buffer 30 is fixed, and the buffer 30 will not move with the mover assembly 500, which is conducive to reducing abnormal noise.

[0063] According to the stator assembly 100 of the embodiment of the present invention, the buffer 30 is connected to the center rod 10 so that the position of the buffer 30 is fixed. When the movable assembly 500 moves relative to the stator assembly 100, the buffer 30 does not move with the movable assembly 500, which is beneficial to reducing abnormal noise.

[0064] In some embodiments of the present invention, the center rod 10 includes a first limit member 17, and the buffer member 30 is connected to the first limit member 17. The first limit member 17 is formed with a mounting structure that cooperates with the buffer member 30. When the stator assembly 100 moves, the buffer member 30 is used to buffer the impact on the end of the stator assembly 100 to avoid the end of the stator assembly 100 from being subjected to rigid impact, thereby protecting the end of the stator assembly 100.

[0065] like Figure 3-Figure 4 、 Figure 6 As shown, in this embodiment, the buffer member 30 is arranged at the lower end of the first limit member 17. The buffer member 30 is used to buffer the impact force on the lower end of the magnetic assembly 100. At the same time, when the buffer member 30 is subjected to the impact force, part of the buffer member 30 is deformed and will not be displaced or tilted relative to the first limit member 17. In this way, when the stator assembly 100 jumps up and down, the stator assembly 100 is prevented from being unevenly stressed due to the movement of the buffer member 30, thereby ensuring the stable operation of the motor 1000.

[0066] In some embodiments of the present invention, in the axial direction of the center rod 10, the first end of the first stopper 17 stops at the iron core 20, and the second end of the first stopper 17 is connected to the buffer 30. As a result, the buffer 30 will not interfere with the iron core 20, and the buffer 30 will not squeeze the iron core 20 when it is squeezed and deformed, which is beneficial to the working reliability of the iron core 20. Figure 3-Figure 4 、 Figure 6 As shown, in this embodiment, the upper end of the first limiting member 17 stops at the iron core 20 , and the lower end of the first limiting member 17 is connected to the buffer member 30 .

[0067] In some embodiments of the present invention, reference Figure 2As shown, the first stopper 17 is provided with a groove 171 recessed toward the direction of the iron core 20, and at least a portion of the buffer member 30 is disposed within the groove 171. A mounting structure is formed at the end of the first stopper 17 away from the second stopper 16. The mounting structure is configured as a groove 171, with the opening of the groove 171 facing the rod body 11. The buffer member 30 is press-fitted into the groove 171 to secure the buffer member 30 at the end of the first stopper 17 away from the second stopper 16, enabling the buffer member 30 to cushion the impact force applied to the lower end of the magnetic assembly 100. The first stopper 17 defines a first axial limit position for the iron core 20, while the second stopper 16 defines a second axial limit position for the iron core 20. During the upward stroke of the mover assembly 500, the end of the stator assembly 100 is subjected to a certain impact at the limit position. The buffer member 30 is pressed into the groove 171 at the lower end of the first stopper 17. In this way, the buffer member 30 does not undergo radial displacement or tilting under the impact load, but remains in its original horizontal position. When the movable subassembly 500 needs to jump up and down repeatedly, the movable subassembly 500 and the stator assembly 100 will not be subjected to uneven force due to the displacement of the buffer 30, thereby improving the service life of the buffer 30 and ensuring the stability of the movement of the motor 1000.

[0068] In some embodiments of the present invention, reference Figure 2 As shown, the first position-limiting member 17 includes a position-limiting portion body 172, a connecting portion 173, and a stop portion 174. The connecting portion 173 is used to connect the position-limiting portion body 172 and the stop portion 174. The stop portion 174 and the position-limiting portion body 172 are arranged opposite each other in the axial direction of the center rod 10. The stop portion 174 extends radially inward from the connecting portion 173 along the center rod 10. A groove 171 is defined between the stop portion 174, the connecting portion 173, and the position-limiting portion body 172. A portion of the buffer 30 is sandwiched between the stop portion 174 and the position-limiting portion body 172. On a plane perpendicular to the axis of the center rod 10, the projections of the buffer 30 and the stop portion 174 at least partially overlap, thereby effectively preventing the buffer 30 from falling out of the groove 171 and improving the secure connection between the buffer 30 and the first position-limiting member 17. When installing the buffer member 30 on the first limiting member 17 , it is only necessary to pinch the buffer member 30 until it matches the gap of the stop portion 174 . When the buffer member 30 needs to be removed, it is pulled outward with force to deform the buffer member 30 and thereby disengage from the groove 171 .

[0069] In some embodiments of the present invention, reference Figure 1-Figure 2As shown, the outer circumference of the buffer 30 has protrusions 31 and recesses 32. The protrusions 31 protrude outward in the radial direction of the center rod 10, while the recesses 32 are recessed inward in the radial direction of the center rod 10. This improves the shock absorption effect of the buffer 30. Optionally, there may be one or more protrusions 31 and one or more recesses 32. The protrusions 31 and recesses 32 are alternately arranged in the axial direction of the buffer 30, so that the outer circumference of the buffer 30 is configured in a corrugated shape, forming the buffer 30 into a bellows.

[0070] In some embodiments of the present invention, the protrusion 31 and the recess 32 are spaced apart in the axial direction of the buffer 30 .

[0071] In some embodiments of the present invention, the buffer member 30 is provided with a through hole extending in the axial direction of the center rod 10. The center rod 10 is provided with a guide cavity 12, and the through hole communicates with the guide cavity 12 in the axial direction of the center rod 10. A guide post 52 passes through the through hole of the buffer member 30 and then extends into the guide cavity 12. The provision of the through hole facilitates the insertion of the guide post 52 and allows the buffer member 30 to be fitted over the guide post 52. Thus, when the buffer member 30 is subjected to an axial impact force, it can deform evenly to better absorb the impact energy.

[0072] Optionally, in some embodiments of the present invention, the buffer member 30 may be made of a material that can elastically deform when subjected to external force. For example, the buffer member 30 may be a rubber member, a silicone member, etc. In this way, the elastic force of the buffer member 30 can offset the load caused by the impact, better absorb the collision force, and prevent the stator end from being subjected to rigid impact.

[0073] In other embodiments of the present invention, the buffer member 30 may also be a plastic member.

[0074] In some embodiments of the present invention, reference Figure 1 、 Figure 3-Figure 4As shown, the center rod 10 includes a rod body 11, and a second stopper 16 is further provided on the rod body 11. The second stopper 16 and the first stopper 17 are spaced apart along the axial direction of the rod body 11. The first end of the iron core 20 abuts against the second stopper 16, and the second end of the iron core 20 abuts against the first stopper 17. In other words, along the axial direction of the center rod 10, the second stopper 16 and the first stopper 17 are spaced apart on the rod body 11, and the iron core 20 is located between the second stopper 16 and the first stopper 17. The second stopper 16 and the first stopper 17 respectively cooperate with the iron core 20 to limit the axial displacement of the iron core 20, thereby preventing the iron core 20 from moving relative to the center rod 10 along the axial direction of the center rod 10. This facilitates more stable positioning of the iron core 20 on the center rod 10 and prevents the iron core 20 from falling off the center rod 10. At the same time, the iron core 20 cannot be displaced in the axial direction of the center rod 10, keeping the tooth pitch unchanged, and avoiding the tooth pitch change increasing the thrust fluctuation and causing the thrust of the motor 1000 to be unstable.

[0075] In the related art, the stator core assembly includes an iron core and an iron core sheath. The iron core is arranged inside the iron core sheath. The iron core sheath is provided with an iron core limiting and locking structure, which can prevent the iron core assembled inside from loosening and misalignment. However, the iron core sheath is located outside the iron core, which will cause the overall type of the motor to adopt an outer winding-inner magnetic steel type, which will in turn cause the air gap of the motor to be smaller, affecting the output performance of the motor. The stator assembly 100 of the present invention can achieve the installation of the iron core 20 on the center rod 10 by sleeved the iron core 20 outside the iron core 20 mating surface of the center rod 10, and use the second limiting member 16 and the first limiting member 17 to limit the iron core 20 on the center rod 10, thereby preventing the iron core 20 from moving relative to the center rod 10 along the axial direction of the center rod 10, facilitating the iron core 20 to be more firmly set on the center rod 10, and preventing the iron core 20 from falling off the center rod 10. Furthermore, when the stator core 20 assembly is applied to the motor 1000 , the motor 1000 may adopt an inner winding-outer magnetic steel form so that the motor 1000 has a sufficient air gap, thereby improving the output performance of the motor 1000 .

[0076] In some embodiments of the present invention, one of the second limiting member 16 and the first limiting member 17 is integrally formed with the rod body 11 , which facilitates reducing the number of parts of the stator assembly 100 and reducing the complexity of the structure of the stator assembly 100 .

[0077] For example, the second limiting member 16 and the rod body 11 are integrally formed. Since the relative position of the second limiting member 16 and the rod body 11 is unchanged, when the iron core 20 is sleeved on the rod body 11, it is convenient to achieve the cooperation between the second limiting member 16 and the iron core 20, so as to use the second limiting member 16 to limit the position of the iron core 20 along the axial direction of the center rod 10.

[0078] In some optional embodiments of the present invention, the rod body 1 is provided with a protrusion protruding radially outward to define one of the second limiting member 16 and the first limiting member 17 , and the protrusion cooperates with the iron core 20 to limit the axial displacement of the iron core 20 .

[0079] In some embodiments of the present invention, the second stopper 16 protrudes outward along the radial direction of the rod body 11. Figure 3-Figure 5 In a specific example, the rod body 1 is provided with a radially outwardly protruding protrusion to define the second limiting member 16. Specifically, the second limiting member 16 is a protrusion and is integrally formed with the rod body 11, so as to reduce the space occupied by the second limiting member 16 and the rod body 11, thereby reserving a larger space for the iron core 20, thereby facilitating the maintenance of a gap between the iron core 20 and other components in the motor 1000, thereby avoiding interference between the iron core 20 and other components in the motor 1000, and enabling the motor 1000 to output power smoothly. At the same time, when the motor 1000 is working, heat is generated near the iron core 20. By reserving a larger space for the iron core 20, rapid heat dissipation in the motor 1000 is facilitated.

[0080] In some embodiments, the axial direction of the center rod 10 extends in the up and down directions, and the second limit member 16 is located at the upper end of the iron core 20. The second limit member 16 is engaged with the upper end of the iron core 20 to limit the upward movement of the iron core 20 to prevent the iron core 20 from falling out of the center rod 10 due to upward movement.

[0081] In some embodiments of the present invention, at least one of the second limiting member 16 and the first limiting member 17 is a threaded member that is threadedly engaged with the rod body 11. For example, the second limiting member 16 is a threaded member, or the first limiting member 17 is a threaded member, or both the second limiting member 16 and the first limiting member 17 are threaded members. By configuring at least one of the second limiting member 16 and the first limiting member 17 as a threaded member, the distance between the second limiting member 16 and the first limiting member 17 can be adjusted, thereby enabling axial positioning of the iron core 20 of various axial sizes.

[0082] In some embodiments of the present invention, the second stopper 16 is a raised portion, and the stop chamfer 13 between the second stopper 16 and the rod body 11 is spaced apart from the iron core 20. This facilitates contact and fit between the second stopper 16 and the iron core 20, enabling the second stopper 16 to limit the axial displacement of the iron core 20, thereby preventing the edge of the iron core 20 from interfering with the stop chamfer 13 when the iron core 20 is sleeved on the rod body 11, thereby affecting the fit between the iron core 20 and the second stopper 16.

[0083] In addition, the cross-section of the center rod 10 at the raised portion undergoes a sudden change, which causes the stress at the limiting chamfer 13 to be greater than the average stress of the center rod 10, so that the limiting chamfer 13 is spaced apart from the iron core 20, thereby avoiding the interaction force between the iron core 20 and the limiting chamfer 13, and thus avoiding damage to the center rod 10 due to excessive force acting on the limiting chamfer 13.

[0084] In some embodiments of the present invention, the core 20 has a core chamfer 211 , which is arranged opposite to the limiting chamfer 13 , thereby improving the stress concentration phenomenon at the edge of the core 20 .

[0085] The second limiting member 16 has a second limiting surface 161, which is connected to the outer circumferential surface of the rod body 11 via a limiting chamfer 13. The iron core 20 has a first end surface 214 and an inner annular surface 213. The inner annular surface 213 is adapted to be sleeved outside the rod body 11. The first end surface 214 of the iron core abuts against the second limiting surface 161, and the first end surface 214 and the inner annular surface 213 are connected via the core chamfer 211.

[0086] In some embodiments of the present invention, the size of the core chamfer 211 is not less than the size of the limiting chamfer 13, so that the core first end face 214 and the second limiting surface 161 can fit more closely. Optionally, the core chamfer 211 and the limiting chamfer 13 are both rounded, and the fillet radius of the core chamfer 211 is not less than the fillet radius of the limiting chamfer 13. Alternatively, the core chamfer 211 and the limiting chamfer 13 are both straight chamfers.

[0087] In some embodiments of the present invention, the first limiting member 17 is detachably connected to the rod body 11 , and the iron core 20 can be conveniently placed on the rod body 11 or removed from the rod body 11 by installing and disassembling the first limiting member 17 .

[0088] In some embodiments of the present invention, Figure 4 、 Figure 6 As shown, the first limit member 17 is constructed as a threaded member, and the first limit member 17 includes a first part 175 and a second part 176. The first part 175 is threadedly engaged with the rod body 11, and the axial thickness of the first part 175 is greater than the axial thickness of the second part 176, so as to increase the area of ​​the threaded engagement between the first part 175 and the rod body 11, thereby facilitating the firm setting of the threaded member on the rod body 11, and at least part of the second part 176 abuts against the iron core 20 to utilize the threaded member to limit the axial displacement of the iron core 20 along the center rod 10.

[0089] The second portion 176 is brought into contact with the iron core 20 to achieve heat transfer between the second portion 176 and the iron core 20 , thereby facilitating heat dissipation of the iron core 20 inside the motor 1000 .

[0090] like Figure 4 As shown, in this embodiment, the first part 175 is located on the inner side of the second part 176, the first part 175 has an internal thread, the rod body 11 has an external thread, the axial direction of the rod body 11 extends in the up and down directions, the axial thickness of the first part 175 extends to H1 along the up and down directions, and the axial thickness of the second part 176 extends to H2 along the up and down directions, H1 is greater than H2, so as to increase the matching area between the first part 175 and the rod body 11, and thus facilitate the threaded component to be firmly fixed on the rod body 11, so that the threaded component can support the iron core 20 and limit the downward displacement of the iron core 20.

[0091] It should be explained here that, with respect to the axis of the center rod 10 , the first part 175 is closer to the center rod 10 , and the second part 176 is farther away from the center rod 10 , so the first part 175 is located on the inner side of the second part 176 .

[0092] In some embodiments, the inner portion of the iron core 20 is interference fit with the rod body 11, and a large assembly stress is generated on the mating surface between the inner portion of the iron core 20 and the rod body 11. The first part 175 is threadedly fitted with the rod body 11, and a large assembly stress is generated on the threaded connection surface between the first part 175 and the rod body 11, so that the inner portion of the iron core 20 and the first part 175 are spaced apart to avoid the generation of force between the inner portion of the iron core 20 and the first part 175, to avoid the inner portion of the iron core 20 being damaged by excessive force, and to avoid the first part 175 being damaged by excessive force.

[0093] In some embodiments of the present invention, the second end of the core 20 has a second core end surface 215 and an escape groove 212. The second portion 176 abuts against the second core end surface 215. The escape groove 212 is recessed relative to the second core end surface 215 toward the second stopper 16, and a portion of the first portion 175 extends into the escape groove 212. This shortens the total axial length between the first stopper 17 and the core 20, making the stator assembly 100 more compact and reducing the space occupied by the stator assembly 100.

[0094] In some examples, the rod body 11 defines a flow channel for circulating a heat exchange medium. When the heat exchange medium flows in the flow channel, it can remove heat generated by the stator assembly 100, thereby cooling the stator assembly 100. The piston portion 411 extends into the flow channel and has an interference fit with the flow channel to seal the flow channel.

[0095] In some embodiments of the present invention, the core 20 includes a plurality of winding slots 23 spaced apart along the axial direction of the core 20 ; the stator assembly 100 further includes a winding, which is wound in the winding slots 23 and is wound radially along the core 20 .

[0096] In some embodiments of the present invention, the iron core 20 is an integrated iron core, and the winding slots 23 are recessed radially from the outer circumference of the iron core 20 .

[0097] Or in other embodiments of the present invention, such as Figure 3-Figure 4 As shown, the iron core 20 includes a plurality of core bodies 21, which are distributed along the axial direction of the central rod 10, and a winding groove 23 is formed between two adjacent core bodies 21. A coil layer 25 is provided in the winding groove 23, and the coil layers 25 of adjacent or non-adjacent layers are electrically connected. When the coil layer 25 is energized, a magnetic field can be generated near the iron core 20. The magnetic field is used to magnetically couple with other components of the motor 1000 to achieve power output of the motor 1000. The iron core 20 is composed of multiple layers of core bodies 21, which is convenient for reducing the manufacturing difficulty and facilitating the arrangement of the coil layer 25 in the iron core 20. When the coil layer 25 is energized, a uniform magnetic field can be generated near the iron core 20.

[0098] The iron core 20 is composed of multiple layers of core bodies 21 , which facilitates a lightweight design of the iron core 20 .

[0099] In some embodiments, the core 21 is externally mounted on the rod body 11 and has an interference fit with the rod body 11 , which facilitates heat transfer between the rod body 11 and the core 21 , thereby facilitating heat dissipation of the stator assembly 100 .

[0100] In some optional embodiments of the present invention, the second limiting member 16 and the first limiting member 17 are in direct contact with the cores 21 at both ends, respectively, to limit the axial displacement of the cores 21 along the rod body 11. Specifically, the second limiting member 16 and the first limiting member 17 can compress the multiple cores 21, and the cores 21 can be used to define the position of the coil layer 25, thereby enabling the cores 21 and the coil layer 25 to generate a uniform and stable magnetic field.

[0101] Specifically, the multiple cores 21 are disposed between the second limiting member 16 and the first limiting member 17 , and are jacketed on the rod body 11 in a layered press-fit manner to limit the axial positions of the multiple cores 21 on the rod body 11 .

[0102] In some embodiments of the present invention, Figure 2 As shown, the rod body 11 is provided with a flow channel for circulating a heat exchange medium. When the heat exchange medium flows in the flow channel, it can take away the heat on the iron core 20 and thereby cool the stator assembly 100 .

[0103] In some embodiments, the iron core 20 includes multiple core bodies 21, and a coil layer 25 is provided between adjacent core bodies 21. After the coil layer 25 is energized, heat will be generated on the coil layer 25, and the generated heat will be transferred to the core body 21. The iron core 20 is sleeved on the center rod 10 and has an interference fit with the center rod 10 to ensure that the iron core 20 and the center rod 10 are in contact, so that the heat on the core body 21 can be transferred to the center rod 10. When the heat exchange medium flows in the flow channel, it can drive the heat on the center rod 10, thereby achieving cooling of the core body 21 and the coil layer 25.

[0104] In some optional embodiments of the present invention, the flow channel is provided with an inlet and an outlet located at the top of the center rod 10 so that the heat exchange medium can flow in the flow channel, taking away the heat on the center rod 10 during the flow process, thereby achieving cooling of the stator assembly 100.

[0105] In some embodiments of the present invention, an interference fit is formed between the iron core 20 and the rod body 11. The iron core 20 has an iron core chamfer 211, and the chamfer at the iron core chamfer 211 is larger than the chamfer at the limiting chamfer 13, so that the limiting chamfer 13 and the iron core chamfer 211 are spaced apart. Since the iron core 20 and the rod body 11 adopt an interference fit, a large assembly stress is generated on the mating surface of the iron core 20 and the rod body 11. The spacing of the limiting chamfer 13 and the iron core chamfer 211 can make the assembly stress of the interference fit be transmitted along the surface rather than along the oblique angle, so that the limiting chamfer 13 of the iron core 20 will not be subjected to excessive assembly stress, which has a good effect on avoiding stress concentration on the iron core 20.

[0106] At the same time, the iron core 20 is spaced apart from the limiting chamfer 13 so that when the iron core 20 is sleeved on the rod body 11, the upper end of the iron core 20 can smoothly contact and cooperate with the lower bottom wall of the second limiting member 16, and the second limiting member 16 can be used to limit the upward movement of the iron core 20.

[0107] In some embodiments of the present invention, the center rod 10 and the iron core 20 are interference fit to limit the radial movement of the iron core 20 along the center rod 10, thereby preventing the iron core 20 from shaking on the center rod 10 along the radial direction of the center rod 10, thereby reducing the possibility of the iron core 20 falling off the center rod 10.

[0108] In some embodiments of the present invention, a first anti-rotation portion 18 is provided on the outer peripheral wall of the rod body 11, the iron core 20 has an iron core inner ring surface 213 suitable for cooperating with the rod body 11, and a second anti-rotation portion 28 is provided on the iron core inner ring surface 213. The first anti-rotation portion 18 cooperates with the second anti-rotation portion 28 to prevent the iron core 20 from rotating relative to the rod body 11.

[0109] In some embodiments of the present invention, the first anti-rotation portion 18 is formed to be recessed inwardly along the radial direction of the rod body 11, and the second anti-rotation portion 28 is formed to be recessed outwardly along the radial direction of the iron core 20. The first anti-rotation portion 18 and the second anti-rotation portion 28 are engaged with each other via a limiting rod 40 to prevent the iron core 20 from rotating relative to the rod body 11. The outer circumferential surface of the limiting rod 40 is engaged with the first anti-rotation portion 18 and the second anti-rotation portion 28, respectively. When the iron core 20 and the center rod 10 have a tendency to rotate relative to each other, the limiting rod 40 can limit the rotation of the iron core 20 and the center rod 10 to prevent the iron core 20 and the center rod 10 from rotating relative to each other.

[0110] In some embodiments of the present invention, in the assembled state, the projection of the first anti-rotation portion 18 on the axis of the rod body 11 at least partially overlaps with the projection of the limiting rod 40 on the axis of the rod body 11, and the projection of the second anti-rotation portion 28 on the axis of the rod body 11 at least partially overlaps with the projection of the limiting rod 40 on the axis of the rod body 11, thereby making the limiting rod 40 have a significant rotation limiting effect on the iron core 20 and the rod body 11.

[0111] In some embodiments, as Figure 9 As shown, the length direction of the first anti-rotation part 18 on the rod body 11 extends in the up-down direction, and the length direction of the limiting rod 40 extends in the up-down direction. The limiting rod 40 is adhesively arranged in the first anti-rotation part 18 and a part of the outer circumference of the limiting rod 40 is in contact with the wall surface of the first anti-rotation part 18. When the iron core 20 is placed on the rod body 11, the limiting rod 40 is arranged relative to the second anti-rotation part 28 on the iron core 20. On the one hand, the relative position of the rod body 11 and the iron core 20 can be positioned, and on the other hand, the limiting rod 40 can be used to guide the moving direction of the iron core 20.

[0112] In some examples, reference Figure 7-Figure 8 As shown, the limiting rod 40 is formed into a cylindrical shape, and the projections of the first anti-rotation part 18 and the second anti-rotation part 28 in the up and down directions form a circle, so that the outer peripheral wall of the limiting rod 40 fits with the first anti-rotation part 18 and the second anti-rotation part 28, so as to be able to limit the relative rotation of the center rod 10 and the iron core 20.

[0113] The projections of the first anti-rotation portion 18 and the second anti-rotation portion 28 in the vertical direction may be semicircles with the same radius, so that the projections of the first anti-rotation portion 18 and the second anti-rotation portion 28 in the vertical direction form a circle.

[0114] In some embodiments of the present invention, the iron core 20 is a magnetic conductive member. For example, the iron core 20 is made of a magnetic conductive material such as iron, cobalt, or nickel, so that the iron core 20 has magnetism.

[0115] In some embodiments of the present invention, the center rod 10 is a non-magnetic member, that is, the center rod 10 is made of non-magnetic material to prevent the center rod 10 from affecting the magnetic circuit of the iron core 20.

[0116] The motor 1000 according to an embodiment of the present invention is described below. The motor 1000 according to an embodiment of the present invention includes the stator assembly 100 according to the above-described embodiment of the present invention.

[0117] Optionally, the motor 1000 is a linear motor 1000 .

[0118] According to the motor 1000 of the embodiment of the present invention, the stator assembly 100 according to the above embodiment of the present invention is utilized, and the buffer 30 is connected to the center rod 10 so that the position of the buffer 30 is fixed. When the movable assembly 500 moves relative to the stator assembly 100, the buffer 30 will not move with the movable assembly 500, which is beneficial to reducing abnormal noise.

[0119] In some embodiments of the present invention, the stator assembly 100 is the stator assembly of the motor 1000, and the motor 1000 also includes a mover assembly 500. The mover assembly 500 and the stator assembly 100 are magnetically coupled. After the stator assembly 100 is energized, the stator assembly 100 generates a changing magnetic field that can drive the mover assembly 500 to move, and the motor 1000 outputs power through the mover assembly 500.

[0120] like Figure 1 As shown, in this embodiment, the mover assembly 500 includes a shell 51 and a magnetic mating part. The shell 51 defines a accommodating cavity. The magnetic mating part is fixed to the inner wall of the accommodating cavity. The iron core 20 is located in the accommodating cavity and the iron core 20 is arranged opposite to the magnetic mating part. When the stator assembly 100 is energized and a changing magnetic field is generated, the magnetic mating part is driven to move. When the magnetic mating part moves, it drives the shell 51 to move. The end of the shell 51 (for example, the lower end) is provided with a mating part, which is used to connect with external components. When the shell 51 moves, it drives the mating part to move and outputs power through the mating part.

[0121] In some embodiments, driven by the magnetic field, the mover assembly 500 moves along the axial direction of the center rod 10, and the shell 51 includes a first stop portion 511 and a second stop portion 512. The first stop portion 511 is used to stop with the second limit member 16, and the second stop portion 512 is used to stop with the first limit member 17 to limit the moving path of the mover assembly 500 and prevent the mover assembly 500 from separating from the stator assembly 100.

[0122] like Figure 1As shown, in this embodiment, the axial direction of the center rod 10 extends in the up-down direction. It should be understood here that the above-mentioned direction limitation is only for the convenience of describing the accompanying drawings, and will not limit the actual setting position and direction of the stator assembly 100 of the motor 1000. The movable assembly 500 can move in the up-down direction relative to the stator assembly 100, and the second limit member 16 and the first limit member 17 are spaced apart in the up-down direction. The second limit member 16 is located above the first limit member 17, and the iron core 20 is located between the second limit member 16 and the first limit member 17.

[0123] The first stop 511 is located above the second stopper 16, and the second stopper 512 is located below the first stopper 17. When the movable assembly 500 moves downward relative to the stator assembly 100, the distance between the first stopper 511 and the second stopper 16 gradually decreases. When the first stopper 511 abuts against the upper end of the second stopper 16, the movable assembly 500 cannot move further downward. When the movable assembly 500 moves upward relative to the stator assembly 100, the distance between the second stopper 512 and the first stopper 17 gradually decreases. When the second stopper 512 abuts against the lower end of the first stopper 17, the movable assembly 500 cannot move further downward.

[0124] The electromagnetic vibration absorber according to an embodiment of the present invention is described below: The electromagnetic vibration absorber according to an embodiment of the present invention includes the stator assembly 100 according to the above embodiment of the present invention.

[0125] According to the electromagnetic vibration absorber of the embodiment of the present invention, the stator assembly 100 according to the above embodiment of the present invention is used. By connecting the buffer 30 to the center rod 10, the position of the buffer 30 is fixed. When the movable assembly 500 moves relative to the stator assembly 100, the buffer 30 will not move with the movable assembly 500, which is beneficial to reducing abnormal noise.

[0126] In some embodiments of the present invention, the stator assembly 100 is a stator assembly of an electromagnetic vibration absorber, which further includes a mover assembly 500. The mover assembly 500 is the same as the mover assembly 500 of the motor 1000 in the above embodiment and is not described again here.

[0127] The following describes a suspension system according to an embodiment of the present invention. The suspension system according to an embodiment of the present invention includes the motor 1000 according to the above-mentioned embodiment of the present invention.

[0128] According to the suspension system of an embodiment of the present invention, using the motor 1000 according to the above embodiment of the present invention, the buffer 30 is connected to the center rod 10, so that the position of the buffer 30 is fixed. When the movable subassembly 500 moves relative to the stator assembly 100, the buffer 30 will not move with the movable subassembly 500, which is beneficial to reducing abnormal noise.

[0129] A vehicle according to an embodiment of the present invention is described below. The vehicle according to an embodiment of the present invention comprises a suspension system according to an embodiment of the second aspect of the present invention.

[0130] According to the vehicle of the embodiment of the present invention, using the suspension system according to the above-mentioned embodiment of the present invention, the buffer 30 is connected to the center rod 10 so that the position of the buffer 30 is fixed. When the movable assembly 500 moves relative to the stator assembly 100, the buffer 30 will not move with the movable assembly 500, which is beneficial to reducing abnormal noise.

[0131] Other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0132] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0133] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections, or communication; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0134] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0135] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A stator assembly (100), characterized in that: include: center rod (10); An iron core (20), the iron core (20) being sleeved on the outside of the center rod (10); and a buffer member (30), the buffer member (30) being connected to the center rod (10), and the buffer member (30) being arranged at one axial end of the iron core (20); The outer peripheral surface of the buffer member (30) has a protrusion (31) and a recess (32), wherein the protrusion (31) protrudes outward in the radial direction of the center rod (10), and the recess (32) is recessed inward in the radial direction of the center rod (10); The central rod (10) includes a first position-limiting member (17), and the buffer member (30) is connected to the first position-limiting member (17); The first limiting member (17) is provided with a groove (171) that is recessed in the direction of the iron core (20), and at least a portion of the buffer member (30) is disposed in the groove (171); The first limiting member (17) includes a limiting member body (172), a stopper (174) and a connecting portion (173) for connecting the limiting member body (172) and the stopper (174), the stopper (174) and the limiting member body (172) are arranged opposite to each other in the axial direction of the center rod (10), the stopper (174) extends radially inwardly of the center rod (10) relative to the connecting portion (173), the groove (171) is formed between the stopper (174), the connecting portion (173) and the limiting member body (172), and a portion of the buffer member (30) is clamped between the stopper (174) and the limiting member body (172).

2. The stator assembly (100) according to claim 1, characterized in that In the axial direction of the center rod (10), the first end of the first limiting member (17) abuts against the iron core (20), and the second end of the first limiting member (17) is connected to the buffer member (30).

3. The stator assembly (100) according to claim 1, characterized in that The protrusion (31) and the recess (32) are spaced apart in the axial direction of the buffer (30).

4. The stator assembly (100) according to claim 1, characterized in that The buffer member (30) is provided with a through hole extending in the axial direction of the center rod (10); a guide cavity (12) is provided on the center rod (10); the through hole is connected to the guide cavity (12) in the axial direction of the center rod (10).

5. The stator assembly (100) according to claim 1, characterized in that The center rod (10) includes a rod body (11), and a second limiting member (16) is further provided on the rod body (11). The first limiting member (17) and the second limiting member (16) are spaced apart along the axial direction of the rod body (11). The first end of the iron core (20) abuts against the second limiting member (16), and the second end of the iron core (20) abuts against the first limiting member (17).

6. The stator assembly (100) according to claim 5, characterized in that At least one of the first limiting member (17) and the second limiting member (16) is a threaded member, and the threaded member is threadedly engaged with the rod body (11).

7. The stator assembly (100) according to claim 5 or 6, characterized in that The second limiting member (16) protrudes outward in the radial direction of the rod body (11).

8. The stator assembly (100) according to claim 7, characterized in that The limiting chamfer (13) between the second limiting member (16) and the rod body (11) is spaced apart from the iron core (20).

9. The stator assembly (100) according to claim 8, characterized in that The iron core (20) has an iron core chamfer (211), and the iron core chamfer (211) is arranged opposite to the limiting chamfer (13).

10. The stator assembly (100) according to claim 9, characterized in that The size of the core chamfer (211) is not less than the size of the limiting chamfer (13).

11. The stator assembly (100) according to claim 5, characterized in that The first limiting member (17) is constructed as a threaded member and includes a first portion (175) and a second portion (176), the first portion (175) being threadedly engaged with the rod body (11), the axial thickness of the first portion (175) being greater than the axial thickness of the second portion (176), and at least a portion of the second portion (176) being in contact with the iron core (20).

12. The stator assembly (100) according to claim 11, characterized in that The second end of the iron core (20) has an iron core second end surface (215) and an avoidance groove (212) that is recessed relative to the iron core second end surface (215) toward the second limiting member (16), and a portion of the first portion (175) extends into the avoidance groove (212).

13. The stator assembly (100) according to claim 1, characterized in that The iron core (20) comprises a plurality of winding slots (23) spaced apart along the axial direction of the iron core (20); The stator assembly (100) further includes a winding, the winding being wound in the winding slot (23), and the winding being wound along the radial direction of the iron core (20).

14. The stator assembly (100) according to claim 13, characterized in that The iron core (20) is an integrated iron core (20), and the winding groove (23) is formed by being recessed radially from the outer peripheral surface of the iron core (20); or, the iron core (20) includes a plurality of core bodies (21), and the plurality of core bodies (21) are distributed along the axial direction of the center rod (10), and the winding groove (23) is formed between two adjacent core bodies (21).

15. The stator assembly (100) according to claim 5, characterized in that The iron core (20) and the rod body (11) are in interference fit.

16. The stator assembly (100) according to claim 5, characterized in that A first anti-rotation portion (18) is provided on the outer peripheral wall of the rod body (11); the iron core (20) has an iron core inner ring surface (213) suitable for cooperating with the rod body (11); a second anti-rotation portion (28) is provided on the iron core inner ring surface (213); the first anti-rotation portion (18) cooperates with the second anti-rotation portion (28) to prevent the iron core (20) from rotating relative to the rod body (11).

17. The stator assembly (100) according to claim 16, characterized in that The first anti-rotation portion (18) is formed by being recessed inwardly along the radial direction of the rod body (11), and the second anti-rotation portion (28) is formed by being recessed outwardly along the radial direction of the iron core (20). The first anti-rotation portion (18) and the second anti-rotation portion (28) are engaged with each other via a limiting rod (40) to prevent the iron core (20) from rotating relative to the rod body (11).

18. The stator assembly (100) according to claim 17, characterized in that The projection of the first anti-rotation portion (18) on the axis of the rod body (11) at least partially overlaps with the projection of the limiting rod (40) on the axis of the rod body (11), and the projection of the second anti-rotation portion (28) on the axis of the rod body (11) at least partially overlaps with the projection of the limiting rod (40) on the axis of the rod body (11).

19. A motor (1000), characterized in that The stator assembly (100) comprises any one of claims 1 to 18, wherein the motor (1000) is a linear motor.

20. An electromagnetic vibration absorber, characterized in that: The stator assembly (100) comprises any one of claims 1-18.

21. A suspension system, characterized in that: Comprising the electromagnetic vibration absorber according to claim 20.

22. A vehicle, characterized in that: Comprising the suspension system of claim 21.

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