CN117895739A - Linear motor, suspension system and vehicle - Google Patents

Abstract

The invention discloses a linear motor, a suspension system and a vehicle, wherein the linear motor comprises: stator assembly, active cell assembly, annular direction arch and first guide bearing, one of them is equipped with the installation cavity, and the other is equipped with first guide post, and the installation cavity has the end cover and locates the direction arch of end cover, and the bellied thickness of direction is greater than the thickness of end cover, and the direction arch has the opening of intercommunication installation cavity, and first guide post stretches into the installation intracavity through the opening, and in the opening was located to at least part structure of first guide bearing, first guide post passes through first guide bearing with the protruding sliding fit of direction. According to the linear motor, the first guide bearing is arranged, so that the relative movement of the stator assembly and the rotor assembly is guided, the guide quality can be ensured, the excessive increase of the thickness of the end cover of the mounting cavity due to the arrangement of the first guide bearing is avoided, and the working performance of the linear motor is ensured.

Description

Linear motor, suspension system and vehicle

Technical Field

The invention relates to the technical field of vehicle parts, in particular to a linear motor, a suspension system and a vehicle.

Background

The suspension system is connected between wheels and a vehicle body of the vehicle, and can react in a certain time aiming at road surface conditions so as to inhibit vibration of the vehicle body and ensure stability of the vehicle body.

In the working process of the suspension system, relative motion can be generated between the rotor assembly and the stator assembly of the linear motor, but the space occupied by the conventional linear motor in the suspension system is larger.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, a first object of the present invention is to provide a linear motor, in which a guide member can effectively guide the linear motor when the linear motor acts, so as to improve the working performance of the linear motor, and solve the technical problem that the working performance of the linear motor is affected due to the poor guiding performance of the guide member in the prior art.

A second object of the present invention is to propose a suspension system with a linear motor as described above.

A third object of the present invention is to propose a vehicle with a suspension system as described above.

According to an embodiment of the present invention, a linear motor includes: a stator assembly; the rotor assembly is provided with a mounting cavity and a first guide column, the mounting cavity is provided with an end cover and a guide protrusion arranged on the end cover, the thickness of the guide protrusion is larger than that of the end cover, the guide protrusion is provided with an opening communicated with the mounting cavity, and the first guide column extends into the mounting cavity through the opening; the first guide bearing is arranged in the opening, and the first guide column is in sliding fit with the guide protrusion through the first guide bearing.

According to the linear motor provided by the embodiment of the invention, the guide bulge with the thickness larger than that of the end cover is arranged on the end cover of the mounting cavity, the opening communicated with the mounting cavity is arranged on the guide bulge, and the first guide bearing is arranged in the opening, so that the first guide bearing has a certain extension length while the relative movement of the stator assembly and the rotor assembly is guided by the cooperation of the guide bulge and the first guide bearing, the guiding performance of the first guide bearing is ensured, the excessive increase of the thickness of the end cover of the mounting cavity due to the arrangement of the first guide bearing is avoided, the manufacturing difficulty and the manufacturing cost of the mounting cavity are reduced, and the axial dimension of the linear motor (the axial direction of the first guide post is the axial direction of the first guide post and the relative sliding direction of the first guide post and the mounting cavity) is reduced, and the volume of the linear motor is reduced. When the linear motor of the present invention is applied to a suspension system, the extension of the end cover in the axial direction is reduced, and the axial space in the suspension system can be more effectively utilized.

In some embodiments, the first guide bearing is disposed on the guide projection, and the first guide post is in sliding engagement with the first guide bearing.

In some embodiments, the guide projection extends away from the mounting cavity.

In some embodiments, the inner peripheral wall of the guide projection is provided with a groove for placing the first guide bearing.

In some embodiments, the linear motor further comprises a stop cooperating with at least one of the first guide bearing and the first guide post to limit rotation of the first guide bearing relative to the first guide post.

In some embodiments, the outer peripheral wall of the first guide post is provided with a first rotation preventing groove, the limiting piece comprises a limiting protrusion, the limiting protrusion is in limiting fit with the first guide bearing, and the limiting protrusion extends into the first rotation preventing groove and is in sliding fit with the first rotation preventing groove.

In some embodiments, the first guide bearing is provided with a mounting groove to which the limit projection is fixed.

In some embodiments, the first guide bearing is provided with a second anti-rotation groove, and the second anti-rotation groove is arranged corresponding to the first anti-rotation groove, so that the limiting protrusion penetrates through the second anti-rotation groove.

In some embodiments, the guide protrusion is provided with a third rotation preventing groove, and the third rotation preventing groove and the second rotation preventing groove are respectively arranged corresponding to the first rotation preventing groove, so that the limit protrusion penetrates through the second rotation preventing groove and the third rotation preventing groove.

In some embodiments, the linear motor further comprises a sensor assembly, the sensor assembly comprises a reading head and a reference piece, one of the reference piece and the reading head is arranged on the guide protrusion, the other of the reference piece and the reading head is arranged on the other of the rotor assembly and the stator assembly, and the reading head and the reference piece are matched to detect the moving position of the rotor assembly.

In some embodiments, the reading head is provided to the guide projection and the reference member is provided to the first guide post.

In some embodiments, the reading head is spaced from the first guide bearing in the direction of extension of the first guide post.

In some embodiments, at least a part of the reading head and the first guide bearing are overlapped in the extending direction of the first guide column, the first guide bearing is provided with an avoidance groove, and the reading head and the avoidance groove are correspondingly arranged so that the reading head and the reference piece are correspondingly arranged through the avoidance groove.

In some embodiments, the stator assembly includes the first guide post, the stator assembly further includes a mounting member for mounting to a vehicle, the first guide post is mounted to the mounting member, and the mounting member is provided with a relief space for relieving the guide projection.

In some embodiments, the linear motor includes a solenoid and a magnet, one of the solenoid and the magnet being disposed on the stator assembly, the other of the solenoid and the magnet being disposed on the mover assembly, the solenoid and the magnet cooperating to enable the mover assembly to reciprocate relative to the stator assembly.

In some embodiments, the electromagnetic coil is disposed on the first guide post and the magnet is disposed within the mounting cavity.

In some embodiments, a guide groove is formed in the first guide post, and a second guide post is formed in the mounting cavity and extends into the guide groove and is in sliding fit with the guide groove.

In some embodiments, the linear motor further comprises a second guide bearing disposed between the second guide post and the guide groove.

In some embodiments, the second guide post is removably disposed in the mounting cavity.

The suspension system according to the embodiment of the invention comprises the linear motor.

According to the suspension system provided by the embodiment of the invention, the linear motor is adopted to improve the working performance of the suspension system.

A vehicle according to an embodiment of the present invention includes the suspension system described above.

According to the vehicle provided by the embodiment of the invention, by adopting the suspension system, the running smoothness of the vehicle can be effectively improved, and the driving experience is ensured.

Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

Fig. 1 is a cross-sectional view of a linear motor according to some embodiments of the present invention.

Fig. 2 is an enlarged partial view of region i in fig. 1.

Fig. 3 is a partial enlarged view of area ii in fig. 1.

Fig. 4 is a cross-sectional view taken along line A-A of fig. 1.

Fig. 5 is a schematic view of a first guide bearing according to some embodiments of the invention.

Reference numerals:

1000. A linear motor;

100. a stator assembly;

110. a mounting member; 111. An avoidance space;

120. a first guide post; 121. a first anti-rotation groove; 122. a guide groove;

200. a mover assembly;

210. a housing;

211. a mounting cavity; 2111. an opening;

212. an end cap;

220. A second guide post;

300. a sensor assembly; 310. a reading head; 320. a reference member;

400. a guide protrusion;

500. a lower tray;

600. A damping spring;

700. a first guide bearing; 710. a second anti-rotation groove; 720. an avoidance groove;

800. and a second guide bearing.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

A linear motor 1000 according to an embodiment of the present invention is described below with reference to the drawings.

As shown in conjunction with fig. 1 and 2, a linear motor 1000 according to an embodiment of the present invention includes: the stator assembly 100, the mover assembly 200, and the first guide bearing 700.

As shown in fig. 1 and 2, one of the mover assembly 200 and the stator assembly 100 is provided with a mounting cavity 211, the other is provided with a first guide post 120, the mounting cavity 211 is provided with an end cover 212 and a guide protrusion 400 arranged on the end cover 212, the thickness of the guide protrusion 400 is greater than that of the end cover 212, the guide protrusion 400 is provided with an opening 2111 communicated with the mounting cavity 211, and the first guide post 120 extends into the mounting cavity 211 through the opening 2111. So as to realize the matching connection of the rotor assembly 200 and the stator assembly 100, thereby being convenient for buffering the impact of the vehicle from the road surface in the running process by utilizing the matching of the rotor assembly 200 and the stator assembly 100 and improving the smoothness of the vehicle.

In some embodiments, the first guide post 120 extends into the installation cavity 211 through the opening 2111 and can move relative to the installation cavity 211, so as to realize moving coordination of the rotor assembly 200 and the stator assembly 100, thereby facilitating the buffer of the impact of the vehicle from the road surface during the driving process by using the linear motor 1000, improving the smoothness of the vehicle, ensuring the comfort of the vehicle, and improving the use experience of the user.

In a specific example, as shown in fig. 1 and 2, the mover assembly 200 is provided with a mounting cavity 211, a guide protrusion 400 having an opening 2111 is provided on an end cap 212 at one end of the mounting cavity 211, and the opening 2111 communicates with the mounting cavity 211 such that the mounting cavity 211 has the opening 2111, and the stator assembly 100 is provided with the first guide post 120.

As shown in connection with fig. 1 and 2, at least a portion of the structure of the first guide bearing 700 is disposed in the opening 2111, and the first guide post 120 is slidably engaged with the guide projection 400 through the first guide bearing 700. That is, the first guide bearing 700 is disposed in the guide protrusion 400, so that when the first guide post 120 is inserted into the mounting cavity 211 through the opening 2111, it is achieved that the first guide bearing 700 can be disposed around the outer circumference of the first guide post 120, and the first guide post 120 is slidably engaged with the guide protrusion 400 through the first guide bearing 700, thereby enabling the mover assembly 200 and the stator assembly 100 to move relatively to ensure the operation performance of the linear motor 1000.

It should be noted that, the first guide bearing 700 is disposed between the guide protrusion 400 and the first guide post 120, where the first guide bearing 700 is enclosed on the outer periphery of the first guide post 120, so as to play a guiding role in the process of moving the rotor assembly 200 and the stator assembly 100 relatively, and avoid the relative position of the first guide post 120 and the guide protrusion 400 from shifting, thereby defining the moving path of the rotor assembly 200, avoiding the shifting of the rotor assembly 200 in the moving process, that is, ensuring that the rotor assembly 200 can move along the predetermined direction, and ensuring the accuracy of the movement of the rotor assembly 200, so that the relative distance between the stator assembly 100 and the rotor assembly 200 in the moving process can be kept unchanged to a certain extent, so that the wheels can move along the predetermined direction, and ensuring the stability of the vehicle when running. It should be further noted that, the thickness of the guide protrusion 400 may be understood as the length of the guide protrusion 400 extending in the up-down direction of fig. 1, and accordingly, the thickness of the end cap 212 may be understood as the length of the end cap 212 extending in the up-down direction of fig. 1, that is, the length of the guide protrusion 400 extending in the up-down direction is greater than the length of the end cap 212 extending in the up-down direction, so that when the first guide bearing 700 is disposed in the guide protrusion 400, since the guide protrusion 400 has a certain protrusion length, the first guide bearing 700 may be ensured to have a certain extension length, thereby ensuring the guide quality, improving the structural strength of the first guide bearing 700, avoiding the deformation and the skew of the first guide bearing 700, further ensuring the guide quality, and prolonging the service life of the first guide bearing 700.

Meanwhile, the thickness of the end cover 212 of the installation cavity 211 is reduced adaptively due to the guide protrusion 400, so that the forming difficulty of the installation cavity 211 is reduced, the manufacturing cost of the installation cavity 211 is saved, the reduction of the cavity size of the installation cavity 211 due to the thicker end cover 212 can be avoided, the installation cavity 211 can be ensured to be provided with an electromagnetic component with a certain size, the linear motor 1000 can obtain better electromagnetic thrust performance, and the working performance of the linear motor 1000 is ensured. When the linear motor 1000 of the present invention is applied to a suspension system, since the extension dimension of the end cap 212 in the axial direction is reduced, a large space occupied by providing a thicker end cap 212 can be avoided, and the axial space in the suspension system can be more effectively utilized.

That is, the present application can ensure the guiding quality of the first guiding bearing 700 while realizing the guiding cooperation of the mover assembly 200 and the stator assembly 100 by providing the guiding protrusion 400 having the opening 2111 at one end of the installation cavity 211, and is advantageous for reducing the thickness of the end cap 212 of the installation cavity 211, avoiding the increase of the thickness of the end cap 212 of the installation cavity 211 due to the provision of the first guiding bearing 700, thereby avoiding the increase of the thickness of the housing 210 of the mover assembly 200 due to the provision of the first guiding bearing 700, and thus realizing the reduction of the thickness and weight of the housing 210 of the mover assembly 200, and reducing the manufacturing difficulty of the mover assembly 200.

As can be seen from the above structure, in the linear motor 1000 according to the embodiment of the present invention, the guide protrusion 400 having the opening 2111 is disposed at one end of the mounting cavity 211, and the first guide bearing 700 is disposed in the guide protrusion 400, so that the first guide bearing 700 is slidably matched with the first guide post 120, and the movement of the first guide post 120 is conveniently guided by using the first guide bearing 700, thereby avoiding the deflection of the sub-assembly 200 during the movement, ensuring the accuracy of the movement of the sub-assembly 200, and improving the working performance of the linear motor 1000.

Meanwhile, since the guide protrusion 400 has a certain protrusion thickness, the first guide bearing 700 is arranged in the guide protrusion 400, the first aspect can ensure the extension length of the first guide bearing 700, thereby improving the guide quality of the first guide bearing 700, the second aspect can improve the structural strength of the first guide bearing 700, prolong the service life of the first guide bearing 700, avoid the deformation, the deviation and the like of the first guide bearing 700, ensure the guide performance of the first guide bearing 700, and the third aspect can avoid the increase of the thickness of the end cover 212 of the installation cavity 211 due to the arrangement of the first guide bearing 700, so as to reduce the forming difficulty of the installation cavity 211, save the manufacturing cost of the installation cavity 211, and simultaneously avoid the reduction of the cavity size of the installation cavity 211 due to the arrangement of the thicker end cover 212, so that more valuable axial space can be provided for the electromagnetic assembly design in the installation cavity 211, thereby enabling the linear motor 1000 to obtain better electromagnetic thrust performance, and ensuring the working performance of the linear motor 1000.

It can be appreciated that, compared with the prior art, the linear motor 1000 of the present application can guide the relative motion of the stator assembly 100 and the mover assembly 200, ensure the guiding quality, and avoid excessively increasing the thickness of the end cap 212 of the mounting cavity 211 due to the provision of the guiding member, thereby ensuring the working performance of the linear motor 1000.

In some embodiments, the first guide bearing 700 is disposed on the guide projection 400, and the first guide post 120 is slidably engaged with the first guide bearing 700.

In some embodiments, the end cap 212 is integrally formed with the guide boss 400. That is, the guide protrusion 400 is integrally formed on the end cover 212, so that the guide protrusion 400 is supported by the end cover 212, and the position stability of the guide protrusion 400 is improved, so that the workability of the guide protrusion 400 is ensured, the difficulty in forming the end cover 212 and the guide protrusion 400 is reduced, and the connection quality of the end cover 212 and the guide protrusion 400 is ensured.

Alternatively, as shown in fig. 1, a guide projection 400 is provided in the radial middle of the end cap 212. Thus, when the first guide post 120 extends into the installation cavity 211 through the opening 2111, it is ensured that the first guide post 120 can be matched with the radial middle part of the installation cavity 211, and the first guide post 120 is prevented from contacting the side wall of the installation cavity 211, so that the first guide post 120 can be ensured to move relative to the installation cavity 211, and the working performance of the linear motor 1000 is ensured.

In some embodiments, as shown in fig. 1, the mover assembly 200 includes a housing 210, a mounting cavity 211 is formed in the housing 210, a guide protrusion 400 having an opening 2111 is provided at one end of the housing 210, the opening 2111 communicates with the mounting cavity 211, and the stator assembly 100 is provided with a first guide post 120, and the first guide post 120 extends into the mounting cavity 211 and is in moving engagement with the housing 210, so as to achieve moving engagement of the mover assembly 200 and the stator assembly 100.

In some embodiments, the linear motor 1000 includes an electromagnetic coil and a magnet, wherein one of the mover assembly 200 and the stator assembly 100 is provided with the magnet, and the other is provided with the electromagnetic coil adapted to be energized, and the magnet and the electromagnetic coil cooperate to achieve coupling cooperation of the stator assembly 100 and the mover assembly 200, so that the mover assembly 200 can reciprocate relative to the stator assembly 100 to ensure the operation performance of the linear motor 1000.

It may be also understood that the linear motor 1000 is used to drive the mover assembly 200 to reciprocate relative to the stator assembly 100, so that the linear motor 1000 can effectively buffer the impact transmitted from the road surface when applied to the suspension system, and improve the smoothness of the vehicle.

In some embodiments, the stator assembly 100 includes a solenoid coil provided to the first guide post 120, and the mover assembly 200 includes a magnet provided in the mounting cavity 211 on an inner wall of the mounting cavity 211, the solenoid coil and the magnet cooperating such that the mover assembly 200 can reciprocate. That is, the first guide post 120 is configured as a fixing member of the solenoid to support the solenoid, improving positional stability of the solenoid, thereby facilitating reciprocal movement of the mover assembly 200 with respect to the stator assembly 100 using the solenoid and magnet cooperation. The magnet may be a permanent magnet or an electromagnet.

In a specific example, the electromagnetic coil is electrified, and the electromagnetic coil after the electrification generates a magnetic field to make the magnet generate a linear motion, at this time, the magnet and the electromagnetic coil cooperate to realize coupling cooperation of the stator assembly 100 and the mover assembly 200 (the cooperation of the magnet and the electromagnetic coil is used to realize the working principle of the linear motor 1000 belongs to the prior art, which is not described herein in detail), so that the mover assembly 200 can reciprocate relative to the stator assembly 100, thereby achieving the purpose of vibration reduction.

In some embodiments, the stator assembly 100 is adapted to be connected to a vehicle body end of a vehicle, and the mover assembly 200 is adapted to be connected to a vehicle wheel end of the vehicle, so as to mount the linear motor 1000 between the vehicle wheel end and the vehicle body end, such that when the vehicle wheel moves up and down relative to the vehicle body, the mover assembly 200 moves relative to the stator assembly 100, i.e., the stator assembly 100 and the mover assembly 200 cooperate to transfer forces and moments acting between the vehicle wheel and the vehicle body, thereby reducing impact loads transferred to the vehicle body by a road surface, and isolating noise input by the road surface and tires, so as to ensure the comfort of the vehicle, and improve the riding experience.

Of course, in other embodiments, the stator assembly 100 may be connected to a wheel end of a vehicle, and the sub-assembly 200 may be connected to a body end of the vehicle, which is not described herein.

In some embodiments, as shown in connection with fig. 1 and 2, the guide projection 400 extends away from the mounting cavity 211. In this way, while ensuring that the thickness of the guide protrusion 400 is greater than that of the end cover 212, the guide protrusion 400 and the first guide bearing 700 can be prevented from occupying the space in the installation cavity 211, so that more valuable axial space can be allowed for the design of the electromagnetic assembly in the installation cavity 211, and thus, the linear motor 1000 can obtain better electromagnetic thrust performance, and the working performance of the linear motor 1000 can be ensured.

That is, the guide protrusion 400 and the first guide bearing 700 of the present application have high guide performance, are not easy to deform, wear and skew, and do not occupy the space in the installation cavity 211.

In other embodiments, the guide protrusion 400 may also extend in a direction approaching the mounting cavity 211; that is, the guide protrusion 400 is located at a side of the end cap 212 away from the installation cavity 211, or the guide protrusion 400 extends from the end cap 212 to a side close to the installation cavity 211 into the installation cavity 211; or a portion of the guide projection 400 extends from the end cap 212 to a side close to the installation cavity 211 into the installation cavity 211, and a portion of the guide projection 400 extends from the end cap 212 to a side far from the installation cavity 211.

In some embodiments, the inner circumferential wall of the guide projection 400 is provided with a groove for placing the first guide bearing 700. The first guide bearing 700 is placed in the groove, so that the first guide bearing 700 is arranged in the guide protrusion 400 and surrounds the opening 2111, the first guide bearing 700 can be arranged around the periphery of the first guide post 120, and the relative movement of the first guide post 120 can be limited conveniently by using the first guide bearing 700, so that a guide effect is achieved, and the rotor assembly 200 is prevented from being deviated in the moving process.

Meanwhile, the groove is formed in the inner peripheral wall of the guide protrusion 400, so that the difficulty in matching the guide protrusion 400 with the first guide bearing 700 can be reduced, and the first guide bearing 700 can be effectively arranged in the guide protrusion 400.

In some embodiments, the first guide bearing 700 is fixedly connected with the inner circumferential wall of the guide protrusion 400 to achieve the fixed connection of the first guide bearing 700 and the guide protrusion 400, which facilitates supporting the first guide bearing 700 by the guide protrusion 400 to improve the positional stability of the first guide bearing 700, thereby ensuring the guide performance of the first guide bearing 700.

The fixed connection may be non-detachable connection such as adhesion or welding, or detachable connection such as bolting or clamping, and is not limited herein.

In some embodiments, the linear motor 1000 further includes a stop (not shown) that cooperates with at least one of the first guide bearing 700 and the first guide post 120 to limit rotation of the first guide bearing 700 relative to the first guide post 120. Thereby, the relative rotation of the rotor assembly 200 and the stator assembly 100 is avoided, so as to achieve the purpose of restraining the relative movement of the rotor assembly 200 and the stator assembly 100, ensure that the rotor assembly 200 only generates the action of moving axially relative to the stator assembly 100, and ensure the working performance of the linear motor 1000.

In some embodiments, as shown in fig. 4, the outer peripheral wall of the first guiding post 120 is provided with a first anti-rotation groove 121, and the limiting member includes a limiting protrusion, which is in limiting fit with the first guiding bearing 700, and extends into the first anti-rotation groove 121 and is in sliding fit with the first anti-rotation groove 121. Wherein, the limit fit is understood as that the limit protrusion and the first guide bearing 700 limit each other, so that the first guide bearing 700 synchronously changes position in the process of changing the position of the limit protrusion; accordingly, in the process of position change of the first guide bearing 700, the position change of the limiting protrusion is also synchronous, so that when the limiting protrusion extends into the first rotation preventing groove 121 and is slidingly matched with the first rotation preventing groove 121, the sliding fit of the first guide bearing 700 and the first guide post 120 can be realized, the first guide bearing 700 is prevented from rotating relative to the first guide post 120, the purpose of limiting the rotation of the first guide bearing 700 relative to the first guide post 120 by using the limiting piece is achieved, and the relative rotation of the rotor assembly 200 and the stator assembly 100 is avoided.

In some embodiments, the limiting protrusion is a limiting post or a limiting pin, the limiting pin is in limiting fit with the first guide bearing 700, and the limiting post extends towards the direction close to the first guide post 120 and stretches into the first anti-rotation groove 121, so that limiting fit of the first guide bearing 700 and the first guide post 120 is realized by using a limiting piece, and rotation of the first guide bearing 700 relative to the first guide post 120 is avoided, so that position stability of the mover assembly 200 and the stator assembly 100 during relative movement is ensured.

The arrangement of the guide piece (the first guide bearing 700) is realized by utilizing the space of the guide protrusion 400, and the arrangement of the anti-rotation structure (the first anti-rotation groove 121) is also realized, so that the space is ingeniously utilized, other spaces of the linear motor 1000 are avoided being occupied, and the space utilization rate is improved.

In some embodiments, the first anti-rotation groove 121 extends along the axial direction of the first guide post 120, such that when the limit protrusion extends into the first anti-rotation groove 121 and is slidably engaged with the first anti-rotation groove 121, the mover assembly 200 can move along the axial direction of the stator assembly 100, and the mover assembly 200 is prevented from rotating along the circumferential direction of the stator assembly 100, thereby achieving the purpose of limiting the rotation of the mover assembly 200, such that the mover assembly 200 only moves axially relative to the stator assembly 100.

In some embodiments, the first guide bearing 700 is provided with a mounting groove (not shown in the drawings) to which the limit projection is fixed. The limiting protrusion is fixedly connected with the first guide bearing 700, so that the limiting protrusion is matched with the first guide bearing 700 in a limiting manner, and when the limiting protrusion extends into the first anti-rotation groove 121 and is matched with the first anti-rotation groove 121 in a sliding manner, the limiting protrusion and the first anti-rotation groove 121 are matched to limit the first guide bearing 700 to rotate relative to the first guide column 120, so that the rotor assembly 200 only moves axially relative to the stator assembly 100, and the working performance of the linear motor 1000 is ensured.

Meanwhile, through setting up the mounting groove on first guide bearing 700, still can reduce spacing protruding and the cooperation degree of difficulty of first guide bearing 700 for spacing protruding can effectively establish on first guide bearing 700, in order to realize spacing protruding and the spacing cooperation of first guide bearing 700.

In some embodiments, as shown in fig. 5, the first guide bearing 700 is provided with a second anti-rotation groove 710, and the limit protrusion is provided on the guide protrusion 400 and penetrates through the second anti-rotation groove 710. That is, the limiting protrusion is not limited to be fixedly connected to the first guide bearing 700, but may be provided on the guide protrusion 400, the limiting protrusion is supported by the guide protrusion 400 to improve the position stability of the limiting protrusion, and when the limiting protrusion is provided on the guide protrusion 400, the first guide bearing 700 is provided with the second anti-rotation groove 710, and the second anti-rotation groove 710 is disposed corresponding to the first anti-rotation groove 121, so that the limiting protrusion can pass through the second anti-rotation groove 710 to extend into the first anti-rotation groove 121, and thus, the relative position of the first guide bearing 700 and the first guide post 120 can be limited by the limiting protrusion, and the first guide bearing 700 is prevented from rotating relative to the first guide post 120, thereby preventing the mover assembly 200 from rotating relative to the stator assembly 100.

In some embodiments, the guide protrusion 400 is provided with a third anti-rotation groove, and the third anti-rotation groove and the second anti-rotation groove 710 are respectively disposed corresponding to the first anti-rotation groove 121, so that the limit protrusion can pass through the third anti-rotation groove and the second anti-rotation groove 710 and extend into the first anti-rotation groove 121, and thus the limit protrusion can be disposed on the outer side of the guide protrusion 400 away from the first guide post 120 and connected with the guide protrusion 400, and thus the relative rotation between the first guide post 120 and the guide protrusion 400 can be limited by the limit protrusion.

In the description of the present invention, a feature defining "first", "second" may explicitly or implicitly include one or more of such feature for distinguishing between the described features, no sequential or light weight fraction.

In some embodiments, the guide protrusion 400 is provided with a matching groove, and the limit protrusion is fixed to the matching groove and extends towards a direction approaching to the first guide post 120, so that one end of the limit protrusion, which faces the first guide post 120, can pass through the second anti-rotation groove 710 on the first guide bearing 700 and is matched in the first anti-rotation groove 121 while the limit protrusion is arranged on the guide protrusion 400, and thus the limit protrusion is used for limiting the rotation of the first guide bearing 700 relative to the first guide post 120.

Optionally, as shown in fig. 4 and 5, the guide protrusion 400 is provided with a plurality of matching grooves, the first guide bearing 700 is provided with a plurality of second anti-rotation grooves 710, the first guide post 120 is provided with a plurality of first anti-rotation grooves 121, the plurality of matching grooves and the plurality of second anti-rotation grooves 710 are in one-to-one correspondence, so that each first anti-rotation groove 121 is extended into a limiting protrusion, and thus the first guide bearing 700 can be limited to rotate relative to the first guide post 120 by using the matching of the plurality of limiting protrusions, so that the mover assembly 200 can only generate an action of axially moving relative to the stator assembly 100, and the working performance of the linear motor 1000 is ensured.

In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In some embodiments, as shown in connection with fig. 1,2 and 4, the linear motor 1000 further includes a sensor assembly 300, the sensor assembly 300 includes a reading head 310 and a reference member 320, one of the reading head 310 and the reference member 320 is disposed on the guide protrusion 400, the other of the reading head 310 and the reference member 320 is disposed on the other of the sub-assembly 200 and the stator assembly 100, and the reading head 310 and the reference member 320 cooperate to detect a moving position of the sub-assembly 200. In this way, the reading head 310 and the reference piece 320 can be respectively arranged on the rotor assembly 200 and the stator assembly 100, so that the moving position of the rotor assembly 200 can be conveniently detected by utilizing the cooperation of the reading head 310 and the reference piece 320, the position of the rotor assembly 200 can be accurately judged, the movement of the rotor assembly 200 can be conveniently controlled, the position accuracy of the rotor assembly 200 after the movement is ensured, and the working performance of the linear motor 1000 is improved.

In some embodiments, the datum 320 is provided on the first guide post 120 and the read head 310 is provided on the guide boss 400.

In other embodiments, the reference member 320 may be disposed on the guide projection 400, and the reading head 310 may be disposed on the first guide post 120.

Meanwhile, the difficulty in detecting the position of the mover assembly 200 can be reduced and the accuracy of detecting the position of the mover assembly 200 can be ensured by using the reading head 310 and the reference member 320 to cooperate to detect the moving position of the mover assembly 200.

That is, the linear motor 1000 of the present application can ensure the control accuracy of the moving position of the sub-assembly 200 by providing the sensor assembly 300, thereby avoiding the technical problem of the control accuracy defect.

In some embodiments, the reading head 310 is provided to the guide projection 400 and is disposed corresponding to the reference member 320. So as to detect the moving position of the mover assembly 200 using the cooperation of the reading head 310 and the reference member 320.

The present solution sets up a direction protruding 400 on the end cover 212, utilizes the space of this direction protruding 400 not only to realize the arrangement of guide (first guide bearing 700), prevent the arrangement of rotating structure (first anti-rotating groove 121), has still realized utilizing direction protruding 400 to realize the arrangement of sensor subassembly 300 to the space has been utilized ingeniously, has avoided taking up other spaces of linear electric motor 1000, has improved space utilization. In addition, when the sensor assembly 300 of the present invention is a sensor generating a magnetic field, such as a hall sensor, the guide protrusion 400 extends from the end cap 212 in a direction away from the mounting cavity 211, so that the guide protrusion 400 is located at the outer side of the end cap 212, and a part of the structure of the sensor assembly 300 is disposed on the guide protrusion 400, thereby avoiding the influence of the electromagnetic coil or the magnet in the mounting cavity 211 on the sensor assembly 300, and further facilitating the operation of the sensor assembly 300.

In some embodiments, as shown in connection with fig. 1,2 and 4, the read head 310 is provided with a guide projection 400 and the reference member 320 is provided with the first guide post 120. In this way, the reading head 310 and the reference piece 320 can be respectively arranged on the rotor assembly 200 and the stator assembly 100, and meanwhile, the reading head 310 can be correspondingly arranged with the reference piece 320, so that the moving position of the rotor assembly 200 can be conveniently detected by utilizing the cooperation of the reading head 310 and the reference piece 320, and the position accuracy of the rotor assembly 200 after moving is ensured.

Meanwhile, the reading head 310 is arranged on the guide protrusion 400 and the reference piece 320 is arranged on the first guide post 120, the reading head 310 can be supported by the guide protrusion 400, the reference piece 320 can be supported by the first guide post 120, the position stability of the reading head 310 and the reference piece 320 is improved, the fixing difficulty of the reading head 310 and the reference piece 320 is reduced, and therefore the detection precision of the sensor assembly 300 is guaranteed.

It should be noted that, because the present application is provided with the limiting member, the limiting member can also prevent the reading head 310 and the reference member 320 from being shifted, so as to ensure that the reading head 310 can always face the reference member 320, and ensure the detection result of the reading head 310, thereby effectively and accurately obtaining the relative positions of the rotor assembly 200 and the stator assembly 100.

In some embodiments, the reference member 320 is a magnetic grating, which is embedded in the first guide post 120, and the magnetic field signal of the magnetic grating is read by the reading head 310 fixed on the guide protrusion 400, thereby realizing detection of the position of the sub-assembly 200 with respect to the stator assembly 100.

Optionally, the guide protrusion 400 is provided with an installation part, and the reading head 310 is installed in the installation part through a bolt, so that the reading head 310 is arranged on the guide protrusion 400, and the matching strength of the reading head 310 and the guide protrusion 400 is ensured, so that the relative position of the reading head 310 and the guide protrusion 400 is stable.

Optionally, the reference member 320 is embedded in the surface of the first guide post 120 through a bolt, so as to ensure the matching strength of the reference member 320 and the first guide post 120, so that the relative position of the reference member 320 and the first guide post 120 is stable, and further, the position stability of the reference member 320 is improved.

That is, the guide projection 400 of the present application can be used not only to mount the first guide bearing 700 but also to mount the reading head 310 to improve the functional utilization of the guide projection 400.

In some embodiments, the read head 310 is spaced apart from the first guide bearing 700 in the direction of extension of the first guide post 120 (not shown in this example view). That is, the reading head 310 and the first guide bearing 700 are both disposed on the guide protrusion 400 and spaced apart from each other in the extending direction of the first guide post 120, so as to achieve a rational utilization of the space on the guide protrusion 400, and to make the reading head 310 and the first guide bearing 700 independent from each other, so as to ensure the workability of the reading head 310 and the first guide bearing 700. For example, the reading head 310 may be located on a side of the first guide bearing 700 away from the mounting cavity 211, such that the reading head 310 is located further away from the magnetic field generated by the electromagnetic coil or magnet within the mounting cavity 211, or the reading head 310 may be located on a side of the first guide bearing 700 closer to the mounting cavity 211.

To further facilitate operation of the sensor assembly 300, the housing 210 and the first guide post 120 may be provided as a non-magnetically conductive material, such as aluminum or the like.

In some embodiments, the reading head 310 and the first guide bearing 700 are spaced apart in the protruding direction of the guide protrusion 400, so that the reading head 310 and the first guide bearing 700 are spaced apart in the extending direction of the first guide post 120, thereby achieving rational utilization of the space on the guide protrusion 400, ensuring that both the reading head 310 and the first guide bearing 700 can be disposed on the guide protrusion 400, and making the reading head 310 and the first guide bearing 700 independent of each other.

In some embodiments, at least a portion of the reading head 310 is overlapped with the first guide bearing 700 in the extending direction of the first guide post 120, as shown in fig. 5, the first guide bearing 700 is provided with a relief groove 720, and the reading head 310 is disposed corresponding to the relief groove 720 such that the reading head 310 is disposed corresponding to the reference member 320 through the relief groove 720, thereby enabling the reading head 310 to read the reference member 320. That is, not only the arrangement of the reading head 310 and the first guide bearing 700 at intervals in the extending direction of the first guide post 120, but also the arrangement of the part of the structure of the reading head 310 or the whole structure of the reading head 310 at the same axial height position as the first guide bearing 700 so that at least part of the reading head 310 and the first guide bearing 700 overlap each other in the extending direction of the first guide post 120, so that the extending length of the first guide bearing 700 can be ensured by avoiding excessively reducing the extending length of the first guide bearing 700 or increasing the extending length of the guide projection 400 due to the arrangement of the reading head 310 on the premise that the extending length of the first guide post 120 is constant, that is, by overlapping at least part of the reading head 310 and the first guide bearing 700 in the extending direction of the first guide post 120, the extending length of the first guide bearing 700 can be ensured as compared to the arrangement of the reading head 310 and the first guide bearing 700 at intervals in the extending direction of the first guide post 120, thereby ensuring the guiding effect of the first guide bearing 700.

In some embodiments, the reading head 310 may be further disposed on the avoidance groove 720 of the first guide bearing 700, and the avoidance groove 720 is disposed on the first guide bearing 700, so as to reduce the fixing difficulty of the reading head 310, improve the position stability of the reading head 310, and ensure the working performance of the reading head 310 to a certain extent.

In a specific example, an avoidance groove and two matching grooves are formed in the guide protrusion 400, the avoidance groove and the two matching grooves are arranged along the circumferential direction of the guide protrusion 400 at intervals, the avoidance groove is used for installing the reading head 310 or avoiding the reading head 310, the two matching grooves are used for installing limiting protrusions respectively, as shown in fig. 5, two second anti-rotation grooves 710 and one avoidance groove 720 are formed in the first guide bearing 700, a first anti-rotation groove 121 in sliding fit with the limiting protrusions and a reference piece 320 right opposite to the reading head 310 are arranged on the peripheral wall of the first guide column 120, the design enables the first guide bearing 700 to not only exert the antifriction sliding effect, but also exert the anti-rotation effect of the sensor assembly 300, the rotor assembly 200 and the stator assembly 100, the efficient functional utilization rate is fully exerted in the same parts, and the problems of arrangement of the sensor assembly 300 and positioning of the rotor assembly 200 and the stator assembly 100 are solved.

In some embodiments, as shown in connection with fig. 1 and 2, the stator assembly 100 includes a first guide post 120, the stator assembly 100 further includes a mounting member 110, the mounting member 110 is configured to be mounted to a vehicle, the first guide post 120 is mounted to the mounting member 110, and the mounting member 110 is provided with a relief space 111 for relieving the guide projection 400. That is, the first guide post 120 is formed on the stator assembly 100 such that the installation cavity 211 having the opening 2111 is formed on the mover assembly 200, and the first guide post 120 is extended into the installation cavity 211 through the opening 2111 to achieve the moving coupling of the mover assembly 200 and the stator assembly 100, thereby facilitating the coupling of the mover assembly 200 and the stator assembly 100 to buffer the impact transmitted from the road surface and enhancing the smoothness of the vehicle.

Meanwhile, by arranging the mounting piece 110 and mounting the first guide post 120 to the mounting piece 110 and mounting the mounting piece 110 to the vehicle, the stator assembly 100 is connected with the vehicle in a matched manner, so that the linear motor 1000 is convenient to buffer the impact of the vehicle from the road surface in the driving process, the smoothness of the vehicle is improved, and the connection difficulty of the stator assembly 100 and the vehicle is reduced.

In addition, through setting up the space 111 that dodges that is used for dodging the direction protruding 400 on mounting 110, when the mover assembly 200 moves towards mounting 110 like this, can move the direction protruding 400 to dodge in the space 111, and then realize moving first guide bearing 700, reading head 310 to dodge in the space 111 to avoid taking the stroke of mover assembly 200 because of setting up the direction protruding 400, thereby guarantee the travel of mover assembly 200, that is guarantee the working property of linear electric motor 1000. It will be appreciated that when the sub-assembly 200 is moved into contact with the end cap 212 and the mounting member 110, the first guide bearing 700 and the reading head 310 are moved into the escape space 111, so that when the thickness of the end cap 212 is reduced, the stroke of the linear motor 1000 applied to the suspension system can be increased due to the movement of the first guide bearing 700 and the reading head 310 into the escape space 111. If the stroke of the linear motor 1000 is fixed, the size of the linear motor 1000 can be reduced, thereby reducing the space occupied by the linear motor 1000 on the suspension system.

It should be noted that, because the mounting member 110 is provided with the avoiding space 111 for avoiding the guiding protrusion 400, the extending length of the guiding protrusion 400 can be increased adaptively, and the guiding protrusion 400 with a longer length is prevented from occupying the layout space of the mounting cavity 211, so as to increase the sliding surface of the first guiding post 120 and the first guiding bearing 700, avoid the failure of the first guiding bearing 700, ensure the guiding performance of the first guiding bearing 700, and design a more valuable axial space for the electromagnetic assembly in the mounting cavity 211, thereby enabling the linear motor 1000 to obtain better electromagnetic thrust performance.

In some embodiments, the first guide post 120 is mounted to the mount 110 by a nut to achieve a secure connection of the first guide post 120 and the mount 110.

Optionally, a rubber bushing structure is disposed on the mounting member 110 to realize that the mounting member 110 has a vibration isolation function, so as to avoid the vibration of the vehicle body from being transferred to the linear motor 1000 and ensure the working performance of the linear motor 1000.

In some embodiments, the stator assembly 100 is connected to the vehicle body end through the mounting member 110, so as to realize the fixed connection between the stator assembly 100 and the vehicle body end, thereby realizing the matched connection between the linear motor 1000 and the vehicle, so that the impact of the vehicle from the road surface in the driving process is buffered by using the linear motor 1000, the smoothness of the vehicle is improved, the comfort of the vehicle is ensured, and the use experience of a user is improved.

In some embodiments, as shown in connection with fig. 1 and 3, a guide groove 122 is provided in the first guide post 120, and a second guide post 220 is provided in the mounting cavity 211, the second guide post 220 extending into the guide groove 122 and slidably engaging the guide groove 122. The guiding cooperation of the rotor assembly 200 and the first guiding column 120 is realized, and the guiding cooperation of the stator assembly 100 and the rotor assembly 200 is further realized, so that the rotor assembly 200 is guided to move by using the first guiding column 120 and the second guiding column 220, the rotor assembly 200 is further prevented from shifting in the moving process, and the moving accuracy of the rotor assembly 200 is ensured.

That is, the present application defines the moving direction of the mover assembly 200 by the guide protrusion 400 on one hand, and also defines the moving direction of the mover assembly 200 by the second guide post 220 on the other hand, so that it is ensured that the mover assembly 200 can move in a predetermined direction, and the moving accuracy of the mover assembly 200 is ensured.

In some embodiments, as shown in conjunction with fig. 1 and 3, the linear motor 1000 further includes a second guide bearing 800, the second guide bearing 800 being disposed between the second guide post 220 and the guide groove 122. The sliding fit between the second guide post 220 and the guide slot 122 is realized, so that the second guide post 220 and the guide slot 122 can move relatively, and the second guide post 220 and the guide slot 122 are prevented from moving in the moving process, so that the moving accuracy of the sub-assembly 200 is ensured.

In some embodiments, a second guide bearing 800 is provided between the second guide post 220 and the inner wall surface of the guide groove 122, so that a sliding fit of the second guide post 220 and the guide groove 122 is achieved using the second guide bearing 800.

In a specific example, the second guide bearing 800 is fixedly coupled to the inner wall surface of the guide groove 122 and slidably engaged with the second guide post 220 to achieve a sliding engagement of the second guide post 220 with the guide groove 122.

It should be noted that, in the present application, the second guide bearing 800 is disposed between the second guide post 220 and the guide groove 122, so as to implement that the second guide bearing 800 is disposed in the installation cavity 211, and the installation cavity 211 has a certain extension length, so that the applicability increases the extension length of the second guide bearing 800, the second guide bearing 800 with a longer extension length can not only increase the effective sliding contact surface between itself and the second guide post 220, reduce the risk of oblique dislocation, but also ensure that the stator assembly 100 can transfer heat to the mover assembly 200 through the cooperation of the guide groove 122 and the second guide post 220, so that the heat generated during the operation of the linear motor 1000 can be transferred to the mover assembly 200, and the heat on the mover assembly 200 can be directly transferred to the external space, thereby improving the heat dissipation efficiency of the linear motor 1000.

In some embodiments, the second guide post 220 is removably disposed in the mounting cavity 211. In this way, the difficulty in connecting the second guide post 220 with the mover assembly 200 can be reduced while the second guide post 220 is mounted in the mover assembly 200, and the second guide post 220 and the mover assembly 200 are relatively stable, so that the second guide post 220 can be stably arranged in the mounting cavity 211 to ensure the guiding performance of the second guide post 220.

Meanwhile, the second guide post 220 is detachably arranged in the mounting cavity 211, and the second guide post 220 is further conveniently and independently processed, so that the surface of the second guide post 220 can be processed with high precision, the second guide post 220 is enabled to have smaller surface roughness, friction resistance between the second guide post 220 and the second guide bearing 800 is reduced, the second guide bearing 800 and the second guide post 220 form sliding fit, and the sliding fit of the second guide post 220 and the guide groove 122 is further realized.

In addition, the second guide post 220 is detachably disposed in the mounting cavity 211 to facilitate the surface of the second guide post 220 to be coated, so as to improve the surface smoothness and wear resistance of the second guide post 220, further reduce the frictional resistance between the second guide post 220 and the second guide bearing 800, and prolong the service life of the second guide post 220.

That is, the present application enables the second guide post 220 to be formed as a separate body from the mover assembly 200 by detachably disposing the second guide post 220 in the mounting cavity 211, so that the second guide post 220 can be precisely processed, the friction coefficient of the surface of the second guide post 220 can be reduced, the friction force can be reduced, the service life of the second guide post 220 can be prolonged, and the second guide post 220 can be conveniently assembled and simply processed.

In some embodiments, the second guide post 220 is fixedly mounted to the bottom of the mounting cavity 211 by a bolt to achieve a detachable engagement of the second guide post 220 with the mounting cavity 211.

Of course, in other embodiments, the second guide post 220 may be fixedly mounted on the bottom of the mounting cavity 211 by a clamping connection, a screw, or the like, so as to achieve the detachable engagement of the second guide post 220 and the mounting cavity 211.

Optionally, the second guide post 220 is made of a material with low wear resistance, such as carbon fiber, aluminum alloy, etc., so as to reduce the weight of the second guide post 220, and realize a lightweight design of the linear motor 1000.

It should be noted that, since the second guide post 220 and the mover assembly 200 are formed as a separate type, after the second guide post 220 is made of a material with low wear resistance such as carbon fiber or aluminum alloy, the wear resistance of the second guide post 220 can be compensated by performing the surface plating treatment on the second guide post 220, so that the wear resistance of the second guide post 220 is ensured and the weight of the second guide post 220 can be reduced.

That is, the present application also facilitates weight saving of the second guide post 220 by detachably disposing the second guide post 220 in the mounting cavity 211. Meanwhile, the second guide post 220 is detachably connected with the installation cavity 211, so that the installation of the electromagnetic coil and the magnet in the installation cavity 211 is facilitated.

In the embodiment of the present invention, the housing 210 has a main structure formed as a mounting cavity 211, an end cap 212, and a lower end cap, on which the second guide post 220 is disposed, and at least one of the end cap 212 and the lower end cap is detachably connected to the main structure (i.e., the mounting cavity 211), thereby facilitating the installation of the electromagnetic coil and the magnet in the mounting cavity 211. And when the lower end cap is detachably connected with the main body structure (i.e., the installation cavity 211), the detachable connection of the second guide post 220 with the installation cavity 211 is also realized.

In summary, according to the linear motor 1000 disclosed by the invention, through the innovative design thought, the space utilization rate and the function utilization rate of the linear motor 1000 are improved, more space is reserved for the design of electromagnetic assemblies, electromagnetic thrust can be increased, the first guide bearing 700 and the second guide bearing 800 are longest in a limited space, the problems that the first guide bearing 700 and the second guide bearing 800 are easy to skew and deform and have small matching surface are avoided, the overall competitiveness is improved, meanwhile, the processing convenience of the second guide column 220 is improved, the friction force is reduced, the light weight degree is improved, the heat dissipation performance is improved, and the performance of the whole linear motor 1000 is greatly improved.

In some embodiments, as shown in fig. 1, the linear motor 1000 further includes a lower tray 500, the lower tray 500 being provided at an outer circumferential wall of the mover assembly 200, and a placement space for placing the damper springs 600 is defined between the mounting member 110 and the lower tray 500. The damping spring 600 is placed in the placement space so as to realize that the damping spring 600 is fixed by matching the mounting piece 110 and the lower tray 500, thus when the vehicle is excited by a road surface and the rotor assembly 200 performs up-and-down telescopic motion, the damping spring 600 is used for realizing buffering and vibration absorption, meanwhile, the damping spring 600 can also play a certain damping role, and the damping effect of the linear motor 1000 is improved, so that the comfort of the vehicle is improved.

That is, the present application provides the lower tray 500 on the outer circumferential wall of the mover assembly 200 mainly for forming a placement space in which the damper springs 600 are placed, to ensure that the damper springs 600 can be formed on the linear motor 1000, thereby improving the damping effect of the linear motor 1000.

In some embodiments, as shown in fig. 1, the damper spring 600 is disposed between the mounting member 110 and the lower tray 500 with the upper end of the damper spring 600 abutting the mounting member 110 and the lower end of the damper spring 600 abutting the lower tray 500, such that the damper spring 600 may be compressed or stretched during the movement of the mover assembly 200 to provide a partial damping force and to receive a partial vibration impact by using the damper spring 600, thereby improving the comfort of the vehicle.

Optionally, the lower tray 500 is integrally formed with the peripheral wall of the mover assembly 200, so as to reduce the molding difficulty of the lower tray 500, ensure the connection strength of the lower tray 500 and the mover assembly 200, ensure that the lower tray 500 can be stably arranged on the peripheral wall of the mover assembly 200, thereby facilitating the use of the lower tray 500 to support the damping spring 600, ensuring the working performance of the damping spring 600, and meanwhile, omitting the setting of a connecting device between the lower tray 500 and the mover assembly 200, simplifying the structure of the linear motor 1000, and enabling the structure of the linear motor 1000 to be compact.

The following describes a suspension system of an embodiment of the present invention.

A suspension system according to an embodiment of the present invention includes: a linear motor 1000.

The linear motor 1000 is the foregoing linear motor 1000, and the specific structure of the linear motor 1000 is not described herein.

As can be seen from the above structure, the suspension system according to the embodiment of the present invention can effectively improve the working performance of the suspension system by adopting the linear motor 1000.

A vehicle of an embodiment of the invention is described below.

A vehicle according to an embodiment of the present invention includes: a suspension system.

The suspension system is the aforementioned suspension system, and specific structures of the suspension system are not described herein.

According to the structure, the vehicle provided by the embodiment of the invention adopts the suspension system, so that the running smoothness of the vehicle is effectively improved, and the driving experience is ensured.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Two second anti-rotation slots 710 are shown in fig. 5 for illustrative purposes, but it is apparent to one of ordinary skill in the art after reading the above disclosure that the disclosure applies to one, three, or more second anti-rotation slots 710.

Other configurations of linear motor 1000, suspension system, and vehicle according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (21)

1. A linear motor, comprising:

a stator assembly;

The rotor assembly is provided with a mounting cavity and a first guide column, the mounting cavity is provided with an end cover and a guide protrusion arranged on the end cover, the thickness of the guide protrusion is larger than that of the end cover, the guide protrusion is provided with an opening communicated with the mounting cavity, and the first guide column extends into the mounting cavity through the opening;

The first guide bearing is arranged in the opening, and the first guide column is in sliding fit with the guide protrusion through the first guide bearing.

2. The linear motor of claim 1, wherein the first guide bearing is disposed on the guide projection, the first guide post being in sliding engagement with the first guide bearing.

3. The linear motor of claim 1, wherein the guide projection extends away from the mounting cavity.

4. The linear motor of claim 1, wherein an inner peripheral wall of the guide projection is provided with a groove for placing the first guide bearing.

5. The linear motor of claim 1, further comprising a stop cooperating with at least one of the first guide bearing and the first guide post to limit rotation of the first guide bearing relative to the first guide post.

6. The linear motor of claim 5, wherein the outer peripheral wall of the first guide post is provided with a first anti-rotation groove, the limiting member comprises a limiting protrusion, the limiting protrusion is in limiting fit with the first guide bearing, and the limiting protrusion extends into the first anti-rotation groove and is in sliding fit with the first anti-rotation groove.

7. The linear motor of claim 6, wherein the first guide bearing is provided with a mounting groove, and the limit projection is fixed to the mounting groove.

8. The linear motor of claim 6, wherein the first guide bearing is provided with a second anti-rotation groove, and the second anti-rotation groove is disposed corresponding to the first anti-rotation groove, so that the limit protrusion penetrates through the second anti-rotation groove.

9. The linear motor of claim 8, wherein the guide protrusion is provided with a third anti-rotation groove, and the third anti-rotation groove and the second anti-rotation groove are respectively arranged corresponding to the first anti-rotation groove, so that the limit protrusion penetrates through the second anti-rotation groove and the third anti-rotation groove.

10. The linear motor of claim 1, further comprising a sensor assembly including a reference member and a reference member, one of the reference member and the reference member being disposed on the guide projection, the other of the reference member and the reference member being disposed on the other of the mover assembly and the stator assembly, the reference member and the reference member being cooperatively used to detect a moving position of the mover assembly.

11. The linear motor of claim 10, wherein the read head is disposed on the guide projection and the reference member is disposed on the first guide post.

12. The linear motor of claim 11, wherein the read head is spaced from the first guide bearing in the direction of extension of the first guide post.

13. The linear motor of claim 11, wherein at least a portion of the reading head overlaps the first guide bearing in the extending direction of the first guide column, the first guide bearing is provided with an avoidance groove, and the reading head is disposed corresponding to the avoidance groove so that the reading head is disposed corresponding to the reference member through the avoidance groove.

14. The linear motor of claim 1, wherein the stator assembly includes the first guide post, the stator assembly further including a mounting member for mounting to a vehicle, the first guide post being mounted to the mounting member, the mounting member being provided with a relief space for relieving the guide projection.

15. The linear motor of claim 1, wherein the linear motor comprises a solenoid and a magnet, one of the solenoid and the magnet being disposed on the stator assembly, the other of the solenoid and the magnet being disposed on the mover assembly, the solenoid and the magnet cooperating to enable the mover assembly to reciprocate relative to the stator assembly.

16. The linear motor of claim 15, wherein the electromagnetic coil is disposed on the first guide post and the magnet is disposed within the mounting cavity.

17. The linear motor of any one of claims 1-16, wherein a guide slot is provided in the first guide post and a second guide post is provided in the mounting cavity, the second guide post extending into and slidably engaging the guide slot.

18. The linear motor of claim 17, further comprising a second guide bearing disposed between the second guide post and the guide slot.

19. The linear motor of claim 17, wherein the second guide post is removably positioned in the mounting cavity.

20. A suspension system comprising a linear motor according to any one of claims 1-19.

21. A vehicle comprising a suspension system according to claim 20.