Stator assembly, linear motor, suspension system, and vehicle

Abstract

A stator assembly (100), a linear motor (1000), a suspension system (2000), and a vehicle (3000). The stator assembly comprises a stator mandrel (110) and a first induction member (120). An accommodating cavity (111) is formed in the stator mandrel. The accommodating cavity is provided with a limiting member (112). The first induction member is arranged in the accommodating cavity. In the radial direction of the stator mandrel, the limiting member is located on the radially outer side of the first induction member and fits with the first induction member to limit the first induction member.

Description

Stator assembly, linear motor, suspension system and vehicle

[0001] Cross-reference to related applications

[0002] The present application is based on the Chinese patent application "Stator assembly, linear motor, suspension system and vehicle" with the application number 202421270337X and the filing date of June 04, 2024, and claims priority to the above-mentioned Chinese patent application, the entire contents of which are hereby incorporated by reference into the present application. TECHNICAL FIELD

[0003] The present application belongs to the technical field of vehicle parts, and specifically relates to a stator assembly, a linear motor, a suspension system and a vehicle. BACKGROUND

[0004] The suspension system provided with the linear motor is connected between the wheel end and the vehicle body end, mainly serving to bear the vehicle body and to alleviate the impact of the road surface, so as to improve the comfort of the vehicle.

[0005] Among them, in order to ensure the working performance of the suspension system, the height of the suspension system needs to be measured and adjusted. Since the movement of the suspension system is the linear movement of the linear motor, a sensor for detecting the linear movement of the linear motor needs to be arranged inside the suspension system.

[0006] However, in the movement process of the existing suspension system, the position of the sensor is easy to deviate, which leads to the failure of the sensor, affects the detection performance of the sensor, and further affects the working performance of the suspension system. SUMMARY

[0007] Therefore, the present application provides a stator assembly which can ensure the position stability of the sensor to a certain extent, thereby avoiding the position deviation of the sensor to a certain extent, ensuring the detection performance of the sensor, and solving the technical problem that the position of the sensor is easy to deviate in the movement process of the suspension system in the prior art.

[0008] The stator assembly according to the embodiments of the present application comprises: a stator core shaft, the stator core shaft is provided with a containing cavity, and the containing cavity is provided with a limiting piece; a first sensing piece, the first sensing piece is arranged in the containing cavity, and in the radial direction of the stator core shaft, the limiting piece is located on the radial outside of the first sensing piece and cooperates with the first sensing piece to limit the first sensing piece.

[0009] According to the stator assembly provided in the embodiment of the present application, the limiting member is arranged on the radial outer side of the first sensing member and is in limiting cooperation with the first sensing member, so that the first sensing member is limited by the limiting member, and the position deviation of the first sensing member relative to the stator shaft is avoided to a certain extent, the position stability of the first sensing member is improved, the working performance of the first sensing member is ensured, and the working performance of the linear motor is ensured.

[0010] Optionally, a part of the side wall of the stator shaft for defining the accommodating cavity defines the limiting member.

[0011] Optionally, the outer peripheral wall of the stator shaft is provided with an opening in communication with the accommodating cavity, and the sensing region of the first sensing member is arranged opposite to the opening.

[0012] Optionally, at least one side of the opening in the axial direction of the stator shaft is provided with the limiting member.

[0013] Optionally, the axial end of the accommodating cavity in the axial direction of the stator shaft is provided with a mounting port.

[0014] Optionally, the stator shaft is provided with a first fixing part located in the accommodating cavity, the first fixing part is arranged close to the mounting port, the first sensing member is provided with a second fixing part, and the first fixing part and the second fixing part are fixedly cooperated to axially position the first sensing member.

[0015] Optionally, the first fixing part is provided with a fixing hole, the second fixing part is provided with an insertion part, and the insertion part axially extends into the fixing hole.

[0016] Optionally, in the radial direction of the stator shaft, the thickness of the accommodating cavity is greater than or equal to the thickness of the first sensing member; and / or, in the axial direction of the stator shaft, the depth of the accommodating cavity is greater than or equal to the axial length of the first sensing member.

[0017] According to the linear motor provided in the embodiment of the present application, the stator assembly is as described above, and the mover assembly is coupled with the stator assembly so that the mover assembly can reciprocate.

[0018] According to the linear motor provided in the embodiment of the present application, the first sensing member is used to detect the linear motion of the linear motor, and the accuracy of the detection is ensured, so that the working performance of the linear motor is improved.

[0019] Optionally, the mover assembly is provided with a mounting cavity for mounting a second sensing member, and the second sensing member and the first sensing member are cooperated to detect the moving position of the mover assembly.

[0020] Optionally, in the radial direction of the mover assembly, the thickness of the mounting cavity is greater than or equal to the thickness of the second inductor; and / or, in the axial direction of the mover assembly, the depth of the mounting cavity is greater than or equal to the axial length of the second inductor.

[0021] The suspension system according to the embodiments of the present application comprises the linear motor as described above.

[0022] The suspension system according to the embodiments of the present application, by employing the linear motor as described above, ensures the position accuracy of the suspension system to a certain extent when the suspension system is in motion, thereby ensuring the working performance of the suspension system.

[0023] The vehicle according to the embodiments of the present application comprises the suspension system as described above.

[0024] The vehicle according to the embodiments of the present application, by employing the suspension system as described above, can effectively utilize the suspension system to alleviate the road impact, thereby improving the comfort of the vehicle and ensuring the driving experience.

[0025] Additional aspects and advantages of the present application will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0027] FIG. 1 is a schematic diagram of a stator assembly before assembly according to some embodiments of the present application.

[0028] FIG. 2 is an enlarged view of region I in FIG. 1.

[0029] FIG. 3 is a schematic diagram of the stator assembly during assembly according to some embodiments of the present application.

[0030] FIG. 4 is a schematic diagram of the stator assembly after assembly according to some embodiments of the present application.

[0031] FIG. 5 is a schematic diagram of a first inductor without a second fixing portion according to some embodiments of the present application.

[0032] FIG. 6 is a front view of the first inductor without the second fixing portion according to some embodiments of the present application.

[0033] FIG. 7 is a top view of a stator core shaft according to some embodiments of the present application.

[0034] FIG. 8 is a schematic diagram of a first inductor according to some embodiments of the present application.

[0035] FIG. 9 is a schematic diagram of the stator core shaft and the first inductor assembled through the second fixing portion according to some embodiments of the present application.

[0036] Fig. 10 is a top view of a stator core shaft according to some embodiments of the present application.

[0037] Fig. 11 is a front view of a first induction piece according to some embodiments of the present application.

[0038] Fig. 12 is a schematic view of a suspension system according to some embodiments of the present application.

[0039] Fig. 13 is a schematic view of a vehicle according to some embodiments of the present application.

[0040] Reference signs: 1000, linear motor; 100, stator assembly; 110, stator core shaft; 111, accommodating cavity; 112, limiting piece; 113, opening; 114, mounting port; 115, first fixing part; 1151, fixing hole; 120, first induction piece; 121, induction area; 122, fixing area; 1221, limiting part; 123, second fixing part; 1231, insertion part; 200, mover assembly; 210, second induction piece; 220, shell; 2000, suspension system; 230, connecting arm; 3000, vehicle. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be understood as limiting the present application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] The stator assembly 100 of the embodiments of the present application is described below with reference to the accompanying drawings.

[0044] As shown in Figs. 1, 2 and 3, the stator assembly 100 according to the embodiments of the present application comprises a stator core shaft 110 and a first induction piece 120.

[0045] As shown in Fig. 1, the stator core shaft 110 is provided with an accommodating cavity 111, and the accommodating cavity 111 is provided with a limiting piece 112.

[0046] As shown in FIG. 3 and FIG. 4, the first sensing member 120 is arranged in the accommodating cavity 111, and the limiting member 112 is arranged radially outside the first sensing member 120 and cooperates with the first sensing member 120 to limit the first sensing member 120. Here, when the first sensing member 120 is arranged in the accommodating cavity 111, the limiting member 112 is arranged radially outside the first sensing member 120 and cooperates with the first sensing member 120 to limit the first sensing member 120, thereby improving the position stability of the first sensing member 120, and avoiding the position deviation of the first sensing member 120, especially avoiding the radial deviation of the first sensing member 120 relative to the stator core shaft 110, so as to ensure the working performance of the first sensing member 120 to a certain extent.

[0047] In some embodiments, the first sensing member 120 is used to cooperate with the second sensing member 210 below to detect the displacement of the mover assembly 200 in the linear motor 1000, so as to ensure the control accuracy of the moving position of the mover assembly 200 and avoid the technical problem of control accuracy defect to a certain extent.

[0048] Therefore, by limiting the first sensing member 120 by the limiting member 112, it can be ensured that the first sensing member 120 can effectively detect the displacement of the mover assembly 200 and improve the detection accuracy.

[0049] From the above structure, it can be seen that the stator assembly 100 of the embodiment of the application sets the accommodating cavity 111 in the stator core shaft 110, so as to arrange the first sensing member 120 in the stator core shaft 110, which on the one hand facilitates supporting the first sensing member 120 by the stator core shaft 110 and reduces the fixing difficulty of the first sensing member 120, and on the other hand facilitates detecting the displacement of the mover assembly 200 by the first sensing member 120 and reduces the detection difficulty.

[0050] Meanwhile, the limiting member 112 is arranged in the accommodating cavity 111, and when the first sensing member 120 is arranged in the accommodating cavity 111, the limiting member 112 is arranged radially outside the first sensing member 120 and cooperates with the first sensing member 120 to limit the first sensing member 120, thereby improving the position stability of the first sensing member 120, avoiding the position deviation of the first sensing member 120, especially avoiding the radial deviation of the first sensing member 120 relative to the stator core shaft 110, so as to ensure the working performance of the first sensing member 120 to a certain extent, and ensure that the first sensing member 120 can effectively detect the displacement of the mover assembly 200 and improve the detection accuracy.

[0051] That is, the first sensing member 120 of the application is positionally stable relative to the stator core shaft 110.

[0052] It can be understood that, compared with the prior art of directly arranging the first sensing part 120 on the stator core shaft 110 through bolts, the application can effectively increase the contact area of the limiting part 112 and the first sensing part 120, so that the first sensing part 120 can be effectively limited by the limiting part 112, and because the limiting part 112 is located on the radial outer side of the first sensing part 120, the radial position of the first sensing part 120 can be effectively limited by the limiting part 112, to a certain extent, avoiding the position deviation of the first sensing part 120 relative to the stator core shaft 110, improving the position stability of the first sensing part 120, and ensuring the working performance of the first sensing part 120.

[0053] In some embodiments, the stator core shaft 110 is slotted to realize the arrangement of the accommodating cavity 111 on the stator core shaft 110, reduce the forming difficulty of the accommodating cavity 111, and further reduce the limiting difficulty of the first sensing part 120.

[0054] In some embodiments, the limiting part 112 is located on the radial outer side of the first sensing part 120 and abuts against the radial outer wall of the first sensing part 120, so as to limit the first sensing part 120 by the limiting part 112, to a certain extent, ensuring the limiting quality and improving the position stability of the first sensing part 120.

[0055] In some embodiments, as shown in FIG. 1, the limiting part 112 is formed as a limiting plate, which is arranged on the radial outer side of the first sensing part 120 and abuts against the radial outer wall of the first sensing part 120, so as to limit the first sensing part 120 by the limiting part 112 while reducing the forming difficulty of the limiting part 112.

[0056] Of course, in other embodiments, the limiting part 112 can also be formed as a limiting boss, which is arranged on the radial outer side of the first sensing part 120 and abuts against the radial outer wall of the first sensing part 120, so as to limit the first sensing part 120 by the limiting part 112.

[0057] In some embodiments, the first sensing part 120 is formed as a magnetic strip of a Hall sensor, which is arranged in the accommodating cavity 111, and a reading head (hereinafter referred to as the second sensing part 210) arranged on the mover assembly 200 can read the magnetic field signal of the magnetic strip, so as to detect the position of the mover assembly 200 relative to the stator assembly 100, achieve the purpose of detecting the linear motion of the linear motor 1000, and facilitate to ensure the position accuracy of the linear motor 1000 during work, to a certain extent, ensuring the working performance of the linear motor 1000.

[0058] In some embodiments, the first sensing member 120 comprises at least one magnetic strip, that is, one magnetic strip can be arranged on the first sensing member 120, or a plurality of magnetic strips can be arranged, wherein the plurality of magnetic strips cooperate to improve the accuracy of position detection, and further ensure the detection accuracy of the linear motor 1000.

[0059] In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0060] Of course, in other embodiments, the first sensing member 120 can also be formed in the form of a circuit board of an inductive sensor, a specific magnetic pole of a magneto-rheological sensor, etc.

[0061] In some embodiments, as shown in FIGS. 1 and 2, a part of the side wall of the stator core shaft 110 for defining the accommodating cavity 111 defines a limiting member 112. That is, the limiting member 112 is formed on the side wall of the stator core shaft 110 and is arranged close to the accommodating cavity 111, so that the limiting member 112 is used to limit the first sensing member 120 arranged in the accommodating cavity 111 is realized, while the forming difficulty of the limiting member 112 is reduced, and the connection strength of the limiting member 112 and the stator core shaft 110 is ensured, the limiting member 112 is supported by the stator core shaft 110, the position stability of the limiting member 112 is improved, and the limiting quality of the limiting member 112 is ensured.

[0062] Of course, in other embodiments, the limiting member 112 can also be formed as an independent structural member, and after the stator core shaft 110 and the accommodating cavity 111 are formed, the limiting member 112 is connected to the stator core shaft 110 and covers part of the accommodating cavity 111, that is, the limiting member 112 is not limited to be defined by a part of the side wall of the stator core shaft 110 for defining the accommodating cavity 111, and the limiting member 112 can be formed separately, so that the limiting member 112 is used to limit the first sensing member 120 arranged in the accommodating cavity 111 is realized.

[0063] In some embodiments, as shown in FIGS. 1, 2 and 3, the outer peripheral wall of the stator core shaft 110 is provided with an opening 113 communicating with the accommodating cavity 111, and the sensing region 121 of the first sensing member 120 is arranged opposite to the opening 113. That is, the first sensing member 120 has a sensing region 121, and the sensing region 121 is arranged opposite to the opening 113, so that the sensing region 121 can effectively cooperate with the reading head arranged on the mover assembly 200 to detect the position of the mover assembly 200 relative to the stator assembly 100, and the purpose of detecting the linear motion of the linear motor 1000 is achieved.

[0064] Here, the sensing region 121 can be understood as the magnetic strip of the Hall sensor, the circuit board of the inductive sensor, the specific magnetic pole of the magneto-rheological sensor, etc. mentioned above.

[0065] Of course, in other embodiments, the opening 113 communicating with the accommodating cavity 111 can not be arranged on the outer peripheral wall of the stator core shaft 110, and the material of the structural member arranged between the first sensing member 120 and the second sensing member 210 can be adjusted to ensure that the first sensing member 120 and the second sensing member 210 can effectively cooperate to achieve the detection purpose.

[0066] In this way, the stator core shaft 110 can be formed with reduced difficulty, the structural strength of the stator core shaft 110 can be improved, and the service life of the stator core shaft 110 can be prolonged.

[0067] In some embodiments, as shown in FIGS. 2, 5 and 6, the first sensing member 120 further has a fixing region 122, the fixing region 122 is arranged in the accommodating cavity 111, and the sensing region 121 is arranged in the fixing region 122, so as to arrange the first sensing member 120 in the accommodating cavity 111, reduce the arrangement difficulty of the first sensing member 120, and utilize the fixing region 122 to fix the sensing region 121, improve the position stability of the sensing region 121, and thus ensure the working performance of the sensing region 121.

[0068] In some embodiments, as shown in FIGS. 5 and 6, the fixing region 122 is formed as a fixing plate, the fixing plate is provided with an accommodating groove, and the sensing region 121 is arranged in the accommodating groove, so as to arrange the sensing region 121 in the fixing region 122 and reduce the fixing difficulty of the sensing region 121.

[0069] In this way, the sensing region 121 can be connected to the fixing region 122 through welding, bonding or bolt connection, so as to ensure the connection strength of the sensing region 121 and the fixing region 122 and improve the position stability of the sensing region 121.

[0070] In addition, the fixing assembly of the fixing region 122 and the accommodating cavity 111 can adopt interference press fitting, threaded connection, key groove cooperation or top cover plate and the like.

[0071] In some embodiments, as shown in FIGS. 1 and 2, the axial side of the opening 113 is provided with a limiting member 112 in the axial direction of the stator core shaft 110. Here, the axial direction can be understood as the X direction shown in FIG. 1, that is, the limiting member 112 can be formed on one axial side of the opening 113, or the limiting member 112 can be provided on both axial sides of the opening 113. In this way, the limiting member 112 can limit the first sensing member 120 while avoiding shielding the sensing area 121 of the first sensing member 120 to some extent, thereby ensuring that the sensing area 121 can effectively cooperate with the reading head provided on the mover assembly 200 to detect the position of the mover assembly 200 relative to the stator assembly 100, achieving the purpose of detecting the linear motion of the linear motor 1000.

[0072] In some embodiments, as shown in FIGS. 4, 5 and 6, the limiting member 112 is in limiting cooperation with the radially outer side of the fixed area 122, which can limit the first sensing member 120 while further avoiding shielding the sensing area 121 of the first sensing member 120, thereby ensuring that the sensing area 121 can effectively cooperate with the reading head provided on the mover assembly 200 to detect the position of the mover assembly 200 relative to the stator assembly 100.

[0073] In some embodiments, as shown in FIGS. 1-4, the limiting member 112 extends along the circumferential direction of the stator core shaft 110, so as to increase the extension length of the limiting member 112, thereby increasing the contact area between the limiting member 112 and the first sensing member 120, ensuring that the first sensing member 120 can be effectively limited by the limiting member 112, improving the position stability of the first sensing member 120, and ensuring the working performance of the first sensing member 120.

[0074] In some embodiments, as shown in FIGS. 1 and 2, the axial end of the accommodating cavity 111 is provided with a mounting port 114 in the axial direction of the stator core shaft 110. The mounting port 114 is used to realize the communication between the inside and outside of the accommodating cavity 111, thereby ensuring that the first sensing member 120 can be effectively assembled into the accommodating cavity 111, and reducing the assembly difficulty of the first sensing member 120.

[0075] In a specific example, during the assembly of the first sensing element 120, the axial end of the first sensing element 120 can be first aligned with the mounting opening 114 (as shown in FIG. 1 and FIG. 2), and then the first sensing element 120 is axially moved so that the axial end of the first sensing element 120 can pass through the mounting opening 114 to be assembled into the accommodating cavity 111 (as shown in FIG. 3), until the axial end of the first sensing element 120 abuts against the axial side wall of the accommodating cavity 111 (as shown in FIG. 4), so as to achieve the assembly of the first sensing element 120 of the application into the accommodating cavity 111 of the stator core shaft 110, that is, to complete the fixed assembly of the first sensing element 120.

[0076] Of course, in other embodiments, the mounting opening 114 can also be arranged at the circumferential end of the accommodating cavity 111, which is not specifically limited in the application.

[0077] In some embodiments, as shown in FIG. 7-FIG. 11, the stator core shaft 110 is provided with a first fixing portion 115 located in the accommodating cavity 111, and the first fixing portion 115 is arranged close to the mounting opening 114 (the specific structure of the mounting opening 114 can be referred to FIG. 2), and the first sensing element 120 is provided with a second fixing portion 123, and the first fixing portion 115 and the second fixing portion 123 are fixedly matched to axially position the first sensing element 120. Here, it is referred to that when the first sensing element 120 is arranged in the accommodating cavity 111, the first fixing portion 115 and the second fixing portion 123 are fixedly matched to axially position the first sensing element 120, so as to avoid the axial deviation of the first sensing element 120 relative to the stator core shaft 110 to a certain extent, and further improve the position stability of the first sensing element 120, so as to ensure the working performance of the first sensing element 120 to a certain extent.

[0078] In summary, the application limits the axial and radial directions of the first sensing element 120, maximizes the position stability of the first sensing element 120, so as to avoid the position deviation of the first sensing element 120 relative to the stator core shaft 110 when the stator assembly 100 vibrates to a certain extent, so as to ensure the working performance of the first sensing element 120.

[0079] In the description of the application, the features defined as "first" and "second" can explicitly or implicitly include one or more features for distinguishing the described features, and there is no order or difference.

[0080] In some embodiments, as shown in FIGS. 7-11, the first fixing part 115 is provided with a fixing hole 1151, and the second fixing part 123 is provided with an insertion part 1231 which axially extends into the fixing hole 1151. This makes the first induction part 120 form a hole shaft cooperation with the stator core shaft 110 in assembly, so as to make the first induction part 120 more limited, avoid the risk of deviation of the first induction part 120, and ensure the working performance of the first induction part 120.

[0081] It should be noted that the limiting of the first induction part 120 by the limiting part 112 is mainly to limit the radial displacement of the first induction part 120, that is, to avoid the radial deviation of the first induction part 120 relative to the stator core shaft 110. The cooperation of the first fixing part 115 and the second fixing part 123 is mainly to limit the axial displacement of the first induction part 120, that is, to avoid the axial deviation of the first induction part 120 relative to the stator core shaft 110. At the same time, the circumferential two side walls of the accommodating cavity 111 can limit the circumferential displacement of the first induction part 120, that is, to avoid the circumferential deviation of the first induction part 120 relative to the stator core shaft 110, thereby improving the position stability of the first induction part 120, and to a certain extent, ensuring the working performance of the first induction part 120.

[0082] In summary, the present application limits the axial, circumferential and radial directions of the first induction part 120, maximizes the position stability of the first induction part 120, to a certain extent, avoids the position deviation of the first induction part 120 relative to the stator core shaft 110 when the stator assembly 100 vibrates, thereby ensuring the working performance of the first induction part 120.

[0083] In some embodiments, as shown in FIGS. 8 and 11, the fixing area 122 includes a limiting part 1221, the insertion part 1231 is provided with a through hole for the limiting part 1221 to pass through, the insertion part 1231 passes through the limiting part 1221 and axially extends into the fixing hole 1151, so as to realize the fixed connection of the first induction part 120 to the stator core shaft 110, and reduce the fixed connection of the first induction part 120 to the stator core shaft 110, thereby realizing the axial positioning of the first induction part 120 and improving the position stability of the first induction part 120.

[0084] In some embodiments, as shown in FIG. 6, the axial height L0 of the limiting part 1221 is equal to 5% of the total height L of the first induction part 120, so as to ensure that the insertion part 1231 can effectively pass through the limiting part 1221, while reducing the manufacturing difficulty of the limiting part 1221.

[0085] Of course, in other embodiments, the axial height L0 of the limiting portion 1221 can also be equal to 10%, 20%, 30%, or 40% of the total height L of the first sensing element 120, or the axial height L0 of the limiting portion 1221 is equal to the total height L of the first sensing element 120.

[0086] In some embodiments, as shown in FIGS. 7, 8, and 9, the insertion portion 1231 is formed as an insertion bolt, the fixing area 122 is formed with a through hole for the insertion bolt to pass through, the fixing hole 1151 is formed as a threaded hole, and the insertion bolt is threadedly connected in the threaded hole through the fixing area 122, so as to realize the threaded connection of the insertion bolt and the threaded hole, that is, the threaded connection of the first sensing element 120 and the stator core shaft 110, which can reduce the connection difficulty of the first sensing element 120 and the stator core shaft 110, and reduce the disassembly difficulty of the first sensing element 120, thereby facilitating the maintenance of the first sensing element 120.

[0087] In other embodiments, as shown in FIGS. 10 and 11, the insertion portion 1231 is formed as a conical insertion rod, the fixing area 122 is formed with a through hole for the conical insertion rod to pass through, the fixing hole 1151 is formed as a conical hole, and the conical insertion rod is fixedly fitted in the conical hole through the fixing area 122, and the conical insertion rod and the conical hole are in interference fit, so as to realize the fixed connection of the first sensing element 120 and the stator core shaft 110, and ensure the connection strength of the first sensing element 120 and the stator core shaft 110, thereby reducing the connection difficulty of the first sensing element 120 and the stator core shaft 110.

[0088] Optionally, the taper of the conical insertion rod and the conical hole meets the international Morse taper standard, so as to realize the close fit of the insertion portion 1231 and the fixing hole 1151, and reduce the disassembly difficulty of the first sensing element 120.

[0089] In some embodiments, in the radial direction of the stator core shaft 110, the thickness of the accommodating cavity 111 is greater than or equal to the thickness of the first sensing element 120. In this way, when the first sensing element 120 is assembled into the accommodating cavity 111, the outer surface of the first sensing element 120 can be prevented from protruding out of the accommodating cavity 111 in the radial direction of the stator core shaft 110 to some extent, so as to realize the assembly of the radial outer surface of the first sensing element 120 in the accommodating cavity 111, avoid increasing the radial occupation space of the stator core shaft 110 due to the arrangement of the first sensing element 120 to some extent, reduce the volume of the stator core shaft 110, facilitate the assembly of the stator core shaft 110, and facilitate the protection of the first sensing element 120 by the stator core shaft 110, thereby prolonging the service life of the first sensing element 120.

[0090] Optionally, in the axial direction of the stator core shaft 110, the depth of the accommodating cavity 111 is greater than or equal to the axial length of the first induction piece 120. In this way, when the first induction piece 120 is assembled into the accommodating cavity 111, the outer surface of the first induction piece 120 can be prevented from protruding out of the accommodating cavity 111 in the axial direction of the stator core shaft 110 to some extent, so as to assemble the axial outer surface of the first induction piece 120 into the accommodating cavity 111, further prevent the radial occupation space of the stator core shaft 110 from being increased due to the arrangement of the first induction piece 120 to some extent, reduce the volume of the stator core shaft 110, facilitate the assembly of the stator core shaft 110, and further facilitate the protection of the first induction piece 120 by the stator core shaft 110 and the prolongation of the service life of the first induction piece 120.

[0091] In a specific example, in the radial direction of the stator core shaft 110, the thickness of the accommodating cavity 111 is greater than or equal to the thickness of the first induction piece 120, and in the axial direction of the stator core shaft 110, the depth of the accommodating cavity 111 is greater than or equal to the axial length of the first induction piece 120, so as to hide the first induction piece 120 in the accommodating cavity 111, reduce the assembly difficulty of the stator core shaft 110, and further protect the first induction piece 120 by the stator core shaft 110 to prolong the service life of the first induction piece 120.

[0092] In summary, the stator assembly 100 of the present application not only increases the limiting structure of the first induction piece 120, but also assembles the first induction piece 120 inside the stator core shaft 110, so that the first induction piece 120 not only has the advantages of stability and reliability, but also facilitates the increase of the occupation space of the stator assembly 100 due to the arrangement of the first induction piece 120, reduces the assembly difficulty of the stator assembly 100, and is conducive to improving the space utilization of the linear motor 1000.

[0093] The linear motor 1000 of the embodiment of the present application will be described below with reference to the accompanying drawings.

[0094] As shown in FIGS. 1, 4 and 12, a linear motor 1000 according to an embodiment of the present application comprises a stator assembly 100 and a mover assembly 200.

[0095] As shown in FIGS. 1, 4 and 12, the stator assembly 100 is the aforementioned stator assembly 100, and the specific structure of the stator assembly 100 is not described herein. The mover assembly 200 is coupled with the stator assembly 100 so that the mover assembly 200 can reciprocate. Here, the mover assembly 200 of the present application is coupled with the stator assembly 100 so that the mover assembly 200 can reciprocate relative to the stator assembly 100, which reduces the movement difficulty of the mover assembly 200 and thus ensures the working performance of the linear motor 1000.

[0096] It can be known from the above structure that the linear motor 1000 of the embodiment of the application adopts the aforementioned stator assembly 100, the first sensing member 120 can be effectively fixed and limited by the stator assembly 100, so that the linear motion of the linear motor 1000 can be effectively detected by the first sensing member 120, and the accuracy of detection is ensured, thereby improving the working performance of the linear motor 1000.

[0097] It should be noted that the first sensing member 120 is mainly used for detecting the linear motion of the mover assembly 200, thereby achieving the purpose of detecting the linear motion of the linear motor 1000, reducing the detection difficulty, and ensuring the accuracy of detection, which is beneficial to improving the working performance of the linear motor 1000.

[0098] In some embodiments, the stator assembly 100 includes a stator core and a stator winding arranged on the stator core, and the mover assembly 200 includes a permanent magnet, the permanent magnet and the stator winding are matched to realize the coupling of the mover assembly 200 and the stator assembly 100, thereby facilitating the reciprocating movement of the mover assembly 200 and ensuring the working performance of the linear motor 1000.

[0099] It should be noted that the coupling of the mover assembly 200 and the stator assembly 100 means that the mover assembly 200 and the stator assembly 100 can affect each other through interaction, thereby facilitating the reciprocating movement of the mover assembly 200, wherein the stator assembly 100 includes a stator core and a stator winding arranged on the stator core, and the mover assembly 200 includes a permanent magnet, the permanent magnet and the stator winding are matched to form a magnetic coupling between the mover assembly 200 and the stator assembly 100, so that the mover assembly 200 and the stator assembly 100 are connected by a magnetic field, thereby facilitating the reciprocating movement of the mover assembly 200, reducing the movement difficulty of the mover assembly 200, and being beneficial to ensuring the working performance of the linear motor 1000.

[0100] In a specific example, when the linear motor 1000 is applied to the vehicle 3000, the mover assembly 200 reciprocates, so that the impact transmitted by the road surface can be buffered by the linear motor 1000, and the noise input by the road surface and the tire can be isolated, thereby ensuring the comfort of the vehicle 3000.

[0101] In some embodiments, as shown in FIG. 12, the mover assembly 200 is provided with a mounting cavity for mounting the second sensing member 210, and the second sensing member 210 and the first sensing member 120 cooperate to detect the moving position of the mover assembly 200. That is, the linear motor 1000 comprises the second sensing member 210, which is mounted to the mover assembly 200 through the mounting cavity on the mover assembly 200, so as to reduce the mounting difficulty of the second sensing member 210, facilitate the support of the second sensing member 210 by the mover assembly 200, and stabilize the position of the second sensing member 210 relative to the mover assembly 200, so as to facilitate the cooperation of the second sensing member 210 and the first sensing member 120 to detect the moving position of the mover assembly 200, ensure the detection accuracy, and thus accurately determine the position of the mover assembly 200, facilitate the control of the movement of the mover assembly 200, and ensure the position accuracy of the mover assembly 200 after movement, thereby improving the working performance of the linear motor 1000.

[0102] In summary, the first sensing member 120 and the second sensing member 210 are mainly used to detect the moving position of the mover assembly 200, so as to ensure the control accuracy of the moving position of the mover assembly 200, thereby avoiding the technical problem of control accuracy defects.

[0103] In some embodiments, the second sensing member 210 is formed as a read head, which is arranged on the mover assembly 200 and is used to read the magnetic field signal of the first sensing member 120 arranged on the stator assembly 100, so as to detect the position of the mover assembly 200 relative to the stator assembly 100, achieve the purpose of detecting the linear motion of the linear motor 1000, and facilitate the position accuracy of the linear motor 1000 during working, so as to ensure the working performance of the linear motor 1000 to a certain extent.

[0104] In some embodiments, the number of read heads is single, and the read head extends along the radial direction of the first sensing member 120, so that when a plurality of magnetic strips are arranged on the first sensing member 120, one read head can be used to simultaneously detect the magnetic field signals of the plurality of magnetic strips, which ensures the detection accuracy, reduces the occupied space of the second sensing member 210, thereby reducing the arrangement difficulty of the second sensing member 210 and improving the space utilization of the mover assembly 200.

[0105] In addition, the single read head can also reduce the use cost of the second sensing member 210 and the weight of the mover assembly 200.

[0106] In some embodiments, as shown in FIG. 12, the mover assembly 200 comprises a housing 220, and the second inductor 210 is installed in a mounting cavity on the housing 220 to mount the second inductor 210 to the mover assembly 200, which can effectively detect the moving position of the mover assembly 200 by cooperation of the first inductor 120 and the second inductor 210, and ensure the control accuracy of the moving position of the mover assembly 200, thereby avoiding the technical problem of control accuracy defects.

[0107] Optionally, the second inductor 210 is installed in the mounting cavity by bolts, which can improve the connection strength between the second inductor 210 and the housing 220, and form a detachable cooperation between the second inductor 210 and the housing 220 to reduce the installation and disassembly difficulty of the second inductor 210.

[0108] Of course, in other embodiments, the second inductor 210 can also be installed in the mounting cavity by screws, buckles, welding or adhesion.

[0109] In some embodiments, in the radial direction of the mover assembly 200, the thickness of the mounting cavity is greater than or equal to the thickness of the second inductor 210. When the second inductor 210 is assembled into the mounting cavity, the outer surface of the second inductor 210 can be prevented from protruding from the mounting cavity in the radial direction of the mover assembly 200 to some extent, so as to assemble the radial outer surface of the second inductor 210 into the mounting cavity, avoid increasing the radial occupation space of the mover assembly 200 due to the second inductor 210 to some extent, reduce the volume of the mover assembly 200, facilitate the assembly of the mover assembly 200, and facilitate the protection of the second inductor 210 by the mover assembly 200 to prolong the service life of the second inductor 210.

[0110] Optionally, in the axial direction of the mover assembly 200, the depth of the mounting cavity is greater than or equal to the axial length of the second inductor 210. When the second inductor 210 is assembled into the mounting cavity, the outer surface of the second inductor 210 can be prevented from protruding from the mounting cavity in the axial direction of the mover assembly 200 to some extent, so as to assemble the axial outer surface of the second inductor 210 into the mounting cavity, further avoid increasing the radial occupation space of the mover assembly 200 due to the second inductor 210 to some extent, reduce the assembly difficulty of the mover assembly 200, and facilitate the further protection of the second inductor 210 by the mover assembly 200 to prolong the service life of the second inductor 210.

[0111] In a specific example, in the radial direction of the mover assembly 200, the thickness of the mounting cavity is greater than or equal to the thickness of the second sensing member 210, and in the axial direction of the mover assembly 200, the depth of the mounting cavity is greater than or equal to the axial length of the second sensing member 210, so as to hide the second sensing member 210 in the mounting cavity, while reducing the assembly difficulty of the second sensing member 210, and the mover assembly 200 can also protect the second sensing member 210, so as to prolong the service life of the second sensing member 210.

[0112] The suspension system 2000 according to the embodiment of the present application will be described below with reference to the accompanying drawings of the specification.

[0113] As shown in FIG. 12, a suspension system 2000 according to an embodiment of the present application includes a linear motor 1000.

[0114] The linear motor 1000 is the aforementioned linear motor 1000, and the specific structure of the linear motor 1000 will not be described here.

[0115] As can be seen from the above structure, the suspension system 2000 according to the embodiment of the present application uses the aforementioned linear motor 1000 to ensure the positional accuracy of the suspension system 2000 to a certain extent when the suspension system 2000 is moving, thereby ensuring the working performance of the suspension system 2000.

[0116] In a specific example, in combination with FIGS. 4 and 12, the suspension system 2000 includes a connecting arm 230, at least part of the stator core shaft 110 is arranged inside the housing 220 of the mover assembly 200, the second sensing member 210 is arranged on the housing 220, the first sensing member 120 is arranged outside the stator core shaft 110 and opposite the second sensing member 210, the connecting arm 230 is connected to the lower side of the housing 220, at the same time, the upper end of the stator core shaft 110 is connected to the vehicle body end, and the lower end of the connecting arm 230 is connected to the vehicle wheel end, in the overall movement of the suspension system 2000, the stator core shaft 110 and the first sensing member 120 arranged on the stator core shaft 110 are jointly connected to the vehicle body end and belong to the stator part of the entire suspension system 2000, and the housing 220, the second sensing member 210 arranged on the housing 220, and the connecting arm 230 are connected to the vehicle wheel end, since the impact of the vehicle wheel end will cause the housing 220 to move axially relative, therefore, the housing 220 and the structural members arranged on the housing 220 belong to the mover part of the entire suspension system 2000, and the mover part reciprocates relative to the stator part, so as to buffer the impact transmitted by the road surface by using the suspension system 2000, and at the same time, the noise input by the road surface and the tire can be isolated, so as to ensure the comfort of the vehicle 3000.

[0117] The vehicle 3000 according to the embodiment of the present application will be described below with reference to the accompanying drawings of the specification.

[0118] As shown in FIG. 13, a vehicle 3000 according to an embodiment of the present application comprises a suspension system 2000.

[0119] The suspension system 2000 is the aforementioned suspension system 2000, and the specific structure of the suspension system 2000 is not described herein.

[0120] As can be seen from the above structure, the vehicle 3000 according to the embodiment of the present application can effectively utilize the suspension system 2000 to slow down the road impact, thereby improving the comfort of the vehicle 3000 and ensuring the driving experience.

[0121] In the description of the present application, it should be noted that unless specifically defined and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0122] The other configurations of the stator assembly 100, the linear motor 1000, the suspension system 2000 and the vehicle 3000 according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0123] In the description of the present application, the description of the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0124] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A stator assembly, wherein, The stator assembly comprises: a stator core shaft, which is internally provided with a receiving cavity, and the receiving cavity is provided with a limiting piece; a first sensing piece, which is arranged in the receiving cavity, and in the radial direction of the stator core shaft, the limiting piece is located on the radial outside of the first sensing piece and cooperates with the first sensing piece to limit the first sensing piece.

2. The stator assembly of claim 1, wherein, A part of the side wall of the stator core shaft for defining the receiving cavity defines the limiting piece.

3. The stator assembly of claim 1 or 2, wherein, The outer peripheral wall of the stator core shaft is provided with an opening which communicates with the receiving cavity, and the sensing area of the first sensing piece is arranged opposite to the opening.

4. The stator assembly of claim 3, wherein, In the axial direction of the stator core shaft, at least one side of the axial direction of the opening is provided with the limiting piece.

5. The stator assembly of any of claims 1-4, wherein, In the axial direction of the stator core shaft, the axial end of the receiving cavity is provided with a mounting port.

6. The stator assembly of claim 5, wherein, The stator core shaft is provided with a first fixing part located in the receiving cavity, the first fixing part is arranged close to the mounting port, the first sensing piece is provided with a second fixing part, and the first fixing part and the second fixing part are fixedly matched to axially position the first sensing piece.

7. The stator assembly of claim 6, wherein, The first fixing part is provided with a fixing hole, and the second fixing part is provided with an insertion part which axially extends into the fixing hole.

8. The stator assembly of any one of claims 1-7, wherein, In the radial direction of the stator core shaft, the thickness of the receiving cavity is greater than or equal to the thickness of the first sensing piece; And / or, in the axial direction of the stator core shaft, the depth of the receiving cavity is greater than or equal to the axial length of the first sensing piece.

9. A linear motor wherein, The stator assembly comprises: a stator assembly according to any one of claims 1-8; a mover assembly, which is coupled with the stator assembly so that the mover assembly can reciprocate.

10. The linear motor of claim 9, wherein, The mover assembly is provided with a mounting cavity for mounting a second sensing piece, and the second sensing piece and the first sensing piece cooperate to detect the moving position of the mover assembly.

11. The linear motor of claim 10, wherein, In the radial direction of the mover assembly, the thickness of the mounting cavity is greater than or equal to the thickness of the second sensing piece; And / or, in the axial direction of the mover assembly, the depth of the mounting cavity is greater than or equal to the axial length of the second sensing piece.

12. A suspension system wherein, The linear motor comprises the mover assembly according to any one of claims 9-11.

13. A vehicle, wherein, The suspension system comprises the mover assembly according to claim 12.

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