Linear motion device, suspension system and vehicle

Abstract

The invention relates to a linear motion device, a suspension system and a vehicle. The linear motion device comprises a base body and a driven part, and the base body is suitable for being connected with a first component to be subjected to vibration reduction; the driven piece is suitable for being connected with a second component to be subjected to vibration reduction and is suitable for being connected with the base body in a matched mode; one of the base body and the driven part is provided with a guide structure, the other one of the base body and the driven part is provided with a guide matching structure, and the guide structure is matched with the guide matching structure, so that the driven part can move relative to the base body under the action of the driving mechanism, and the relative position of the first to-be-damped part and the second to-be-damped part is adjusted; wherein the follower is adapted to reciprocate when the output member of the drive mechanism moves in one direction. Through the technical scheme, the linear motion device provided by the invention can improve the running stability and reliability of the linear motion device, and has the advantages of simple structure and high output stability.

Description

Technical Field

[0001] This disclosure relates to the field of linear motion device technology, specifically to a linear motion device, suspension system, and vehicle. Background Technology

[0002] In related technologies, linear motion devices can achieve reciprocating linear motion, but the overall structure of existing linear motion devices is relatively complex, and during linear motion, the low reliability of transmission between transmission components results in low operational stability and reliability of the linear device. Summary of the Invention

[0003] The purpose of this disclosure is to provide a linear motion device, suspension system, and vehicle that can improve the operational smoothness and reliability of the linear motion device, and has the advantages of simple structure and high output stability.

[0004] To achieve the above objectives, a first aspect of this disclosure provides a linear motion device, comprising: a base adapted to be connected to a first component to be damped; and a follower adapted to be connected to a second component to be damped, the follower being adapted to engage with the base; one of the base and the follower is provided with a guide structure, and the other is provided with a guide engagement structure, the guide structure engaging with the guide engagement structure to enable the follower to move relative to the base under the action of a drive mechanism, thereby adjusting the relative position of the first component to be damped and the second component to be damped; wherein the follower is adapted to reciprocate when the output of the drive mechanism moves in one direction.

[0005] Optionally, the guide structure includes a groove, at least a portion of the inner wall surface of the groove being formed as an arcuate surface; the guide mating structure includes a protrusion that mates with the groove.

[0006] Optionally, the groove has two first inner wall surfaces opposite each other in a first direction and a second inner wall surface connected between the two first inner wall surfaces, wherein the first inner wall surface is the arc-shaped surface and the second inner wall surface is a plane; the first direction is perpendicular to the movement direction of the follower.

[0007] Optionally, the protrusion has two opposing protrusions in a first direction and a connecting portion located between the two protrusions, the outer wall surface of the protrusions being attached to the first inner wall surface, and the outer wall surface of the connecting portion being attached to the second inner wall surface.

[0008] Optionally, in the second direction, there are two grooves, which are arranged at intervals relative to each other, and the number of protrusions is adapted to the grooves; the second direction is perpendicular to the first direction and perpendicular to the movement direction of the follower.

[0009] Optionally, the inner wall surface of the groove is an arc-shaped surface.

[0010] Optionally, in the first direction, two sets of grooves are arranged, with the two sets of grooves spaced apart from each other; in the second direction, each set of grooves includes two spaced-apart grooves; the number of protrusions is adapted to the number of grooves; the second direction is perpendicular to the first direction.

[0011] Optionally, the substrate is provided with a receiving cavity, the driven member includes a shell movably disposed in the receiving cavity, the guide structure is provided on the inner wall surface of the substrate, and the guide mating structure is provided on the outer wall surface of the shell.

[0012] Optionally, the housing is provided with a mounting cavity, and the output component is a cam disposed in the mounting cavity. The cam is in contact with two inner wall surfaces of the mounting cavity opposite to each other in the direction of movement of the follower. The cam is adapted to drive the follower to reciprocate relative to the base through movement in the one direction.

[0013] Optionally, the cam is an eccentric cam.

[0014] Optionally, the housing is provided with a strip-shaped hole through which the rotating shaft connected to the cam passes, the drive mechanism includes a motor, the motor is disposed outside the housing and drives the cam to rotate via the rotating shaft, and the strip-shaped hole extends along the moving direction of the follower.

[0015] Optionally, the housing has strip-shaped holes on both side walls opposite to each other in the first direction, and the cam has rotating shafts on both side walls opposite to each other in the first direction. The rotating shafts pass through the corresponding strip-shaped holes, and one of the rotating shafts is connected to the output shaft of the motor. The first direction is parallel to the axial direction of the rotating shafts.

[0016] Optionally, the outer edge profile of the cam is a Reichelk triangle.

[0017] Optionally, the base has a first end and a second end disposed opposite to each other in the moving direction of the driven member. The first end is provided with a first connection structure for connecting with the first component to be damped. The second end is provided with a through hole communicating with the receiving cavity. An actuating rod is provided on the housing. The actuating rod passes through the through hole to connect with the second component to be damped. The actuating rod extends along the moving direction of the driven member.

[0018] Optionally, the actuating rod is connected to the second vibration damping component via a second connecting structure, and an elastic element is provided between the base and the second connecting structure.

[0019] A second aspect of this disclosure provides a suspension system including the linear motion device provided in the first aspect above, the linear motion device being adapted to be connected between a vehicle body and a wheel, the vehicle body being the first component to be damped, and the wheel being the second component to be damped.

[0020] A third aspect of this disclosure provides a vehicle including the suspension system provided in the second aspect described above.

[0021] Through the above-described technical solution, namely the linear motion device provided in this disclosure, the linear motion device has a guide structure on one of the base and the driven member, and a guide mating structure on the other. Thus, when the driven member moves relative to the base under the action of the drive mechanism, not only can the reciprocating motion of the driven member adjust the relative position of the first and second vibration-damping components, but also, due to the cooperation of the guide structure and the guide mating structure, the stable movement of the driven member can be guided and restricted, reducing the swaying between the driven member and the base, which helps to improve the operational smoothness and reliability of the linear motion device. Furthermore, since the driven member is suitable for reciprocating motion when the output component of the drive mechanism moves in one direction, the structure of the output component of the drive mechanism and related transmission components (if any) can be simplified. Moreover, the unidirectional movement of the drive mechanism can reduce the impact and vibration generated during processes such as frequent start-stop or reversal, thereby reducing vibration transmission and noise, which is beneficial to improving the service life of the linear motion device and ensuring high output stability.

[0022] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the linear motion device provided in an exemplary embodiment of this disclosure; Figure 2 This is a partial structural diagram of the linear motion device provided in an exemplary embodiment of this disclosure after the substrate has been removed; Figure 3 This is a schematic diagram of the structure of the cam in the linear motion device provided in an exemplary embodiment of this disclosure; Figure 4 This is a cross-sectional view of the linear motion device provided in an exemplary embodiment of this disclosure; Figure 5 This is a cross-sectional view of the linear motion device provided in an exemplary embodiment of this disclosure from another angle; Figure 6 This is a cross-sectional view of the base of the linear motion device provided in the second embodiment of this disclosure.

[0024] Explanation of reference numerals in the attached figures 1-Base; 110-Receiving cavity; 120-First end; 130-Second end; 140-Through hole; 2-Follower; 210-Housing shell; 211-Mounting cavity; 212-Strip hole; 220-Actuating rod; 3-Guide structure; 310-Groove; 311-Arc-shaped surface; 312-First inner wall surface; 313-Second inner wall surface; 4-Guide mating structure; 410-Protrusion; 411-Protrusion; 412-Connecting part; 5-Drive mechanism; 510-Output component; 511-Cam; 512-Rotating shaft; 520-Motor; 6-First connecting structure; 7-Second connecting structure; 8-Elastic component. Detailed Implementation

[0025] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0026] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0027] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the inner and outer contours relative to the outline of the component or structure itself. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same elements.

[0028] According to a first aspect of this disclosure, a linear motion device is provided, with reference to... Figures 1 to 6 As shown, the linear motion device includes a base 1 and a driven member 2. The base 1 is adapted to be connected to a first component to be damped; the driven member 2 is adapted to be connected to a second component to be damped, and the driven member 2 is adapted to be connected in conjunction with the base 1. One of the base 1 and the driven member 2 is provided with a guide structure 3, and the other is provided with a guide engagement structure 4. The guide structure 3 and the guide engagement structure 4 cooperate with each other so that the driven member 2 can move relative to the base 1 under the action of the drive mechanism 5 to adjust the relative position of the first component to be damped and the second component to be damped; wherein the driven member 2 is adapted to reciprocate when the output component 510 of the drive mechanism 5 moves in one direction.

[0029] Through the above-described technical solution, namely the linear motion device provided in this disclosure, the linear motion device has a guide structure 3 on one of the base 1 and the driven member 2, and a guide engagement structure 4 on the other. Thus, when the driven member 2 moves relative to the base 1 under the action of the drive mechanism 5, not only can the reciprocating motion of the driven member 2 adjust the relative position of the first and second vibration-damping components, but also, due to the cooperation of the guide structure 3 and the guide engagement structure 4, the stable movement of the driven member 2 can be guided and restricted, reducing the swaying between the driven member 2 and the base 1, which helps to improve the operational smoothness and reliability of the linear motion device. Furthermore, since the driven member 2 is adapted to reciprocate when the output component 510 of the drive mechanism 5 moves in one direction, the structure of the output component 510 of the drive mechanism 5 and related transmission components (if any) can be simplified. Moreover, the unidirectional movement of the drive mechanism 5 can reduce the impact and vibration generated during, for example, frequent starts, stops, or reversals, thereby reducing vibration transmission and noise, which is beneficial to improving the service life of the linear motion device and ensuring high output stability.

[0030] It should be noted that the first component to be damped can be, for example, the vehicle body, and the second component to be damped can be, for example, a wheel. Thus, when the driven member 2 is connected to, for example, the wheel, and the base 1 is connected to, for example, the vehicle body, the linear motion output of the linear motion device can achieve, for example, lifting or lowering the vehicle body. Furthermore, the reciprocating linear movement of the driven member 2 connected to the wheel through the linear motion device can compensate in real time for external force interference caused by complex road conditions during vehicle operation, thus buffering and absorbing bumps caused by external forces to a certain extent. This effectively reduces the bump force caused by external impacts or vibrations, reduces vibration transmission and noise generation, and improves the user's driving experience. Moreover, because the guide structure 3 cooperates with the guide mating structure 4, it can also guide and restrict the stable movement of the driven member 2, reducing the swaying between the driven member 2 and the base 1, which helps improve the operational smoothness and reliability of the linear motion device, further enhancing the user's driving experience.

[0031] Of course, the above-mentioned linear motion device can not only be applied to vehicles to realize the lifting or lowering of the vehicle body and real-time compensation for external force interference caused by complex road conditions during vehicle driving, but also to other mechanical processing equipment or conveying equipment that need to realize linear motion output. This disclosure does not make specific limitations in this regard.

[0032] The guide structure 3 and the guide mating structure 4 can be constructed in any suitable manner according to actual application requirements. For example, in some embodiments, refer to Figures 2 to 6As shown, the guide structure 3 may include a groove 310, at least a portion of the inner wall surface of the groove 310 is formed as an arc surface 311, and the guide mating structure 4 includes a protrusion 410 that mates with the groove 310, so as to reduce the shaking between the driven member 2 and the base 1, improve the smoothness and reliability of the linear motion device, and the overall structure is simple and easy to install and manufacture.

[0033] For example, such as Figure 2 and Figure 6 As shown, part of the inner wall surface of the groove 310 can be formed as an arc-shaped surface 311. For example, the groove 310 can have two first inner wall surfaces 312 opposite to each other in the first direction and a second inner wall surface 313 connected between the two first inner wall surfaces 312. The first inner wall surface 312 is an arc-shaped surface 311, and the second inner wall surface 313 is a plane. The protrusion 410 has two protrusions 411 opposite to each other in the first direction and a connecting portion 412 located between the two protrusions 411. The outer wall surface of the protrusion 411 is attached to the first inner wall surface 312, and the outer wall surface of the connecting portion 412 is attached to the second inner wall surface 313, so as to reduce the shaking between the driven member 2 and the base 1 and improve the smoothness and reliability of the linear motion device.

[0034] The first direction can be perpendicular to the direction of movement of the follower 2. For example, the first direction can be referenced... Figure 6 The vertical direction of the center plane, and the direction of movement of the follower 2 can be referenced to the direction perpendicular to the center plane. Figure 6 The direction of the image can also be referenced. Figure 4 The vertical direction of the middle image.

[0035] In addition, considering the need to further improve the smoothness and stability of linear motion devices, such as... Figure 6 As shown, in the second direction, there can be two grooves 310, which are arranged relatively at intervals. The number of protrusions 410 is adapted to the grooves 310, which helps to further improve the smoothness and stability of the linear motion device.

[0036] The second direction is perpendicular to the first direction, and the second direction is also perpendicular to the direction of movement of the follower 2. For example, the second direction can be referenced... Figure 6 The left and right directions of the middle image.

[0037] Or, in other implementations, such as Figure 5As shown, the inner wall surface of the groove 310 can also be entirely formed as an arc surface. In order to ensure that the linear motion device has high operational stability and reliability, in the first direction, two sets of grooves 310 can be arranged, with the two sets of grooves 310 arranged relatively at intervals. In the second direction, each set of grooves 310 includes two grooves 310 arranged at intervals. The number of protrusions 410 is adapted to the grooves 310, so as to reduce the shaking between the driven member 2 and the base 1 and improve the operational stability and reliability of the linear motion device.

[0038] It should be noted that the specific number and position of the guide structure 3 and guide mating structure 4 are exemplary. Those skilled in the art can adapt them according to actual application needs. The purpose is to reduce the shaking between the driven member 2 and the base 1 and improve the smoothness and reliability of the linear motion device by cooperating with the guide structure 3 and the guide mating structure 4. In addition, the specific external shape of the groove 310 is not specifically limited in this disclosure. Those skilled in the art can adapt it according to actual application needs, such as a semi-circular groove, a dovetail groove, or a rectangular groove, etc. Correspondingly, the external shape of the protrusion 410 can be adapted to the groove 310 and slidably connected to the groove 310. This disclosure does not specifically limit it in this respect.

[0039] In some implementations, reference Figures 1 to 6 As shown, a receiving cavity 110 can be provided inside the base 1. The driven member 2 includes a housing 210 movably disposed in the receiving cavity 110. The aforementioned guide structure 3 is provided on the inner wall surface of the base 1, and the aforementioned guide mating structure 4 is provided on the outer wall surface of the housing 210. The overall structure is simple and easy to install and manufacture. Furthermore, by directly utilizing the space on the base 1 and the housing 210 to design the guide structure 3 and the guide mating structure 4, the spatial volume of the linear motion device can be effectively reduced, which is conducive to the lightweight and miniaturized design of the linear motion device. The space occupancy rate is low, which allows for more design space to be saved for subsequent optimization design of the entire vehicle when the linear motion device is applied to, for example, a vehicle.

[0040] Additionally, in some implementations, references Figures 1 to 6As shown, a mounting cavity 211 can be provided inside the housing 210. The output component 510 is a cam 511 disposed in the mounting cavity 211. The cam 511 is in contact with two inner wall surfaces of the mounting cavity 211 opposite to each other in the direction of movement of the follower 2. The cam 511 is adapted to drive the follower 2 to reciprocate relative to the base 1 by moving in one direction. Thus, this disclosure achieves linear motion output by directly driving the follower 2 using a cam structure. Compared with related technologies, which require transmission structures such as gear racks, ball screws, or cylindrical cam mechanisms to convert the rotational motion of a motor into linear motion for output, the linear motion device of this disclosure has a simpler overall structure and higher output stability. Furthermore, since the follower 2 is driven to move linearly by the cam structure, the number of related transmission components is simplified, which helps to make the linear motion device lightweight and miniaturized, and reduces the space occupation rate.

[0041] Among them, such as Figure 3 and Figure 4 As shown, cam 511 can be an eccentric cam, the center of which is not at the point of rotation. That is, it can be understood that the rotation axis 512 of cam 511 is offset from the central axis of cam 511. Thus, when the drive mechanism 5 drives the eccentric cam to rotate eccentrically around the rotation axis 512, due to the height difference in the rotation diameter of the eccentric cam during rotation, the follower 2 can be driven to move linearly relative to the base 1. In this way, when the follower 2 is connected to, for example, a wheel, and the base 1 is connected to, for example, a vehicle body, the linear motion device can realize the lifting or lowering operation of the vehicle body and real-time compensation for external force interference caused by complex road conditions during vehicle operation.

[0042] In addition, the aforementioned drive mechanism 5 may include a motor 520. The motor 520 is located outside the housing 210 and drives the cam 511 to rotate via the rotating shaft 512. Thus, during the rotation of the output shaft of the motor 520 in one direction (e.g., the output shaft of the motor 520 rotates forward or in reverse), the cam 511 can be driven to rotate and the driven member 2 can be driven to reciprocate relative to the base 1. This can achieve, for example, the lifting or lowering of the vehicle body and real-time compensation for external force interference caused by complex road conditions during vehicle driving. Furthermore, the drive mechanism 5 enables precise control of the linear motion device's stroke and speed, resulting in good operability and high applicability.

[0043] It should be noted that when the above-mentioned linear motion device is applied to a vehicle, the motor 520 can be connected to a controller (not shown in the figure) via signal connection. For example, the controller can be an automotive electronic control unit (ECU). In this way, the automotive electronic control unit (ECU) can determine whether the vehicle body height is maintained at the normal driving height through feedback from a detection device (not shown). If the vehicle body height is not at the normal driving height, the automotive electronic control unit (ECU) can control the motor 520 to drive the eccentric cam to rotate, so as to realize the lifting or lowering operation of the vehicle body through the linear motion device and real-time compensation for external force interference caused by complex road conditions during vehicle driving, thereby improving the stability and passability of the vehicle, and achieving the purpose of reducing vibration transmission and noise generation, thus improving the user's driving experience.

[0044] Of course, the specific embodiment of the controller described above, such as an automotive electronic control unit (ECU), is exemplary. In other embodiments, the controller may also be, for example, a separately arranged PLC controller or microcontroller known in the art. Furthermore, since the controller can be connected to the actuator (e.g., motor 520) via, for example, wirelessly or via wired means, and the signal connection method and data transmission method between the controller and the actuator are all known in the art, they can be implemented with a controller, and will not be elaborated further here.

[0045] Additionally, in some implementations, references Figures 2 to 5 As shown, the housing 210 may be provided with a strip hole 212 through which the rotating shaft 512 connected to the cam 511 passes. The strip hole 212 extends along the moving direction of the follower 2. In this way, when the follower 2 reciprocates relative to the base 1, the outer wall surface of the rotating shaft 512 slides against the inner wall surface of the strip hole 212. The strip hole 212 can limit the rotation shaft 512, avoid the problem of the cam 511 moving along the second direction during rotation, and improve the smoothness and reliability of the linear motion device.

[0046] Alternatively, in some implementations, reference is made to Figures 2 to 5 As shown, the housing 210 can be provided with strip holes 212 on both sides of the opposite side wall in the first direction. The cam 511 is provided with a rotating shaft 512 on both sides of the opposite side wall in the first direction. The rotating shaft 512 passes through the corresponding strip hole 212. One of the rotating shafts 512 is coaxially connected to the output shaft of the motor 520, and the first direction is parallel to the axis of the rotating shaft 512. This helps to improve the smoothness and stability of the linear motion device. The overall structure is simple and easy to install and manufacture. It is conducive to the lightweight and miniaturized design of the linear motion device and has a low space occupancy rate.

[0047] It should be noted that this disclosure does not specifically limit the structural dimensions of the slot 212. Its purpose is to limit the rotation shaft 512 through the slot 212, preventing the cam 511 from moving along the second direction during rotation, thereby improving the smoothness and reliability of the linear motion device. For example, the slot 212's position along the moving direction of the follower 2 (refer to...) Figure 4 The length dimension (up and down direction of the middle drawing) can meet the linear motion stroke of the follower 2, that is, it only needs to meet the motion stroke of the linear motion device. At the same time, the width dimension of the strip hole 212 along the second direction can meet the requirement that the inner wall surface of the strip hole 212 fits against the outer wall surface of the rotating shaft 512 to achieve the limit, without affecting the relative sliding between the rotating shaft 512 and the strip hole 212. For example, the width dimension of the strip hole 212 along the second direction can form a clearance fit with the rotating shaft 512.

[0048] In addition, this disclosure exemplarily shows that the motor 520 of the drive mechanism 5 is arranged outside the base 1 and coaxially connected to the rotation shaft 512 of the cam 511. Of course, it is not limited to this. For example, the motor 520 can also be arranged inside the receiving cavity 110 of the base 1 and located outside the housing 210, while coaxially connecting the motor 520 to the rotation shaft 512 of the cam 511. This disclosure does not specifically limit such variations. Those skilled in the art can design them adaptively according to actual application needs.

[0049] Furthermore, the rotation shaft 512 of the cam 511 of this disclosure is not limited to being coaxially connected with the output shaft of the motor 520. It can also be indirectly connected by means of, for example, gear connection or synchronous belt connection. This disclosure does not specifically limit such variations. Those skilled in the art can design them adaptively according to actual application needs.

[0050] Furthermore, this disclosure does not specifically limit the specific external shape and structure of the base 1 and the shell 210 described above. For example, exemplarily, Figures 1 to 6 The diagram shows that the base 1 and the shell 210 are formed into a rectangular box structure, but it is not limited to this. For example, it can also be a cylindrical box structure. This disclosure does not specifically limit such deformation. Those skilled in the art can design it adaptively according to actual application needs, and will not elaborate further here.

[0051] Alternatively, in some implementations, reference is made to Figures 2 to 5As shown, the outer edge profile of cam 511 can be a Reichstag triangle. That is, cam 511 is a constant-width cam structure, and the outer edge profile of the constant-width cam is a Reichstag triangle. Because the Reichstag triangle has a certain width curve, the distance from the outer edge of cam 511 to the center is always the same. This ensures that during the rotation of cam 511, the outer edge of cam 511 always maintains contact with the top and bottom walls of housing 210 in the direction of movement of follower 2, reducing the wobbling between cam 511 and housing 210, and helping to improve the smoothness and reliability of the linear motion device. Furthermore, because the eccentric cam has a height difference in its rotational radius during rotation, it can drive follower 2 to move linearly relative to base 1. Thus, when follower 2 is connected to, for example, a wheel, and base 1 is connected to, for example, a vehicle body, this linear motion device can achieve lifting or lowering of the vehicle body and real-time compensation for external force interference caused by complex road conditions during vehicle operation, improving the driving experience.

[0052] Additionally, in some implementations, references Figures 1 to 6 As shown, the base 1 may have a first end 120 and a second end 130 that are arranged opposite to each other in the direction of movement of the driven member 2. The first end 120 is provided with a first connecting structure 6 for connecting to the first component to be damped, and the second end 130 is provided with a through hole 140 communicating with the receiving cavity 110. An actuating rod 220 is provided on the housing 210. The actuating rod 220 passes through the through hole 140 to connect to the second component to be damped. The actuating rod 220 extends in the direction of movement of the driven member 2. In this way, by configuring the positions of the first component to be damped and the second component to be damped to be arranged opposite to each other in the direction of movement of the driven member 2, when the linear motion device is applied to, for example, a vehicle, it is convenient to realize the lifting or lowering operation of the vehicle body and to compensate for external force interference caused by complex road conditions during vehicle driving in real time.

[0053] It should be noted that, for example Figure 1 , Figure 2 as well as Figure 4 As shown, since the first end 120 is exemplary to be the side of the top wall of the base 1 in the direction of movement of the driven member 2, and the second end 130 is the side of the bottom wall of the base 1 in the direction of movement of the driven member 2, by arranging the first vibration damping component outside the side of the top wall of the base 1, arranging the second vibration damping component outside the side of the bottom wall of the base 1, and arranging the motor 520 outside the side of the side wall of the base 1, the overall structure is more compact and easier to install, avoiding installation interference problems and helping to ensure the stable operation of the linear motion device.

[0054] Additionally, in some implementations, references Figures 1 to 4As shown, the actuating rod 220 can be connected to the second component to be damped via the second connecting structure 7. An elastic element 8 is provided between the base 1 and the second connecting structure 7. The elastic element 8 is used to provide elastic force to prevent the second connecting structure 7 from moving toward the base 1, so as to avoid damage to the components (such as the cam structure) inside the linear motion device caused by the hard impact of the second connecting structure 7. In addition, the elastic element 8 can also compensate for external force interference caused by complex road conditions during vehicle driving in real time, and play a certain role in buffering and absorbing the bumps caused by external forces. It effectively reduces the bump force caused by external impact or vibration, reduces vibration transmission and noise generation, and helps to improve the smoothness and reliability of the linear motion device and improve the user's driving experience.

[0055] Wherein, the aforementioned elastic element 8 can be, for example Figure 1 The compression spring shown in the figure, which is disposed between the base 1 and the second connecting structure 7 and is used to be sleeved on the outside of the actuating rod 220, can also be an elastic block, which is not shown in the figure, for example, disposed between the base 1 and the second connecting structure 7 and used to be sleeved on the outside of the actuating rod 220. This disclosure does not specifically limit such variations, and those skilled in the art can design them adaptively according to actual application requirements.

[0056] Furthermore, this disclosure does not specifically limit the specific structure of the first connecting structure 6 and the second connecting structure 7. Those skilled in the art can adapt the specific structure of the first connecting structure 6 and the second connecting structure 7 according to actual application needs. For example, when the linear motion device is applied to, for example, a vehicle, the base 1 of the linear motion device can be directly or indirectly connected to, for example, the body of the vehicle through the first connecting structure 6, and the actuating rod 220 of the linear motion device can be directly or indirectly connected to, for example, the wheel of the vehicle through the second connecting structure 7 (the second connecting structure 7 can be constructed as, for example, a fork arm structure and connected to the swing arm on the wheel).

[0057] According to a second aspect of this disclosure, a suspension system is provided, including the linear motion device provided in the first aspect above. The linear motion device is adapted to be connected between a vehicle body and a wheel, wherein the vehicle body is a first component to be damped, and the wheel is a second component to be damped. Furthermore, this suspension system possesses all the beneficial effects of the aforementioned linear motion device, which will not be elaborated upon herein.

[0058] According to a third aspect of this disclosure, a vehicle is provided, including the suspension system provided in the second aspect above. Furthermore, the vehicle possesses all the beneficial effects of the aforementioned suspension system, which will not be elaborated upon herein. In addition, the vehicle can be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not specifically limit it in this regard.

[0059] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0060] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0061] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A linear motion device, characterized in that, include: The substrate is suitable for connection to the first component to be damped; and A follower is adapted to be connected to a second component to be damped, and the follower is adapted to be connected in conjunction with the base. One of the base and the driven member is provided with a guide structure, and the other is provided with a guide engagement structure. The guide structure and the guide engagement structure engage with each other so that the driven member can move relative to the base under the action of the drive mechanism to adjust the relative position of the first vibration damping component and the second vibration damping component. The driven member is adapted to reciprocate when the output member of the drive mechanism moves in one direction.

2. The linear motion device according to claim 1, characterized in that, The guide structure includes a groove, at least a portion of the inner wall surface of the groove being formed as an arcuate surface; The guide mating structure includes a protrusion that mates with the groove.

3. The linear motion device according to claim 2, characterized in that, The groove has two first inner wall surfaces opposite each other in a first direction and a second inner wall surface connected between the two first inner wall surfaces, wherein the first inner wall surface is the arc-shaped surface and the second inner wall surface is a plane; The first direction is perpendicular to the direction of movement of the driven member.

4. The linear motion device according to claim 3, characterized in that, The protrusion has two opposing protrusions in a first direction and a connecting portion located between the two protrusions. The outer wall surface of the protrusions is attached to the first inner wall surface, and the outer wall surface of the connecting portion is attached to the second inner wall surface.

5. The linear motion device according to claim 4, characterized in that, In the second direction, there are two grooves, which are arranged at intervals relative to each other, and the number of protrusions is adapted to the number of grooves; The second direction is perpendicular to the first direction, and the second direction is perpendicular to the movement direction of the follower.

6. The linear motion device according to claim 2, characterized in that, The inner wall of the groove is an arc-shaped surface.

7. The linear motion device according to claim 6, characterized in that, In the first direction, two sets of grooves are arranged, and the two sets of grooves are arranged at intervals relative to each other. In the second direction, each set of grooves includes two grooves arranged at intervals. The number of protrusions is adapted to the number of grooves; The second direction is perpendicular to the first direction.

8. The linear motion device according to any one of claims 1-7, characterized in that, The substrate has a receiving cavity, and the driven member includes a shell movably disposed in the receiving cavity. The guide structure is disposed on the inner wall surface of the substrate, and the guide mating structure is disposed on the outer wall surface of the shell.

9. The linear motion device according to claim 8, characterized in that, The housing has a mounting cavity, and the output component is a cam disposed in the mounting cavity. The cam is attached to two inner wall surfaces of the mounting cavity opposite to each other in the direction of movement of the driven component. The cam is adapted to drive the driven component to reciprocate relative to the base through movement in one direction.

10. The linear motion device according to claim 9, characterized in that, The cam is an eccentric cam.

11. The linear motion device according to claim 9, characterized in that, The housing has a slotted hole through which the rotating shaft connected to the cam passes. The drive mechanism includes a motor, which is located outside the housing and drives the cam to rotate via the rotating shaft. The slotted hole extends along the moving direction of the follower.

12. The linear motion device according to claim 11, characterized in that, The housing has strip-shaped holes on its two opposite side walls in the first direction, and the cam has a rotating shaft on its two opposite side walls in the first direction. The rotating shaft passes through the corresponding strip-shaped holes, and one of the rotating shafts is connected to the output shaft of the motor. The first direction is parallel to the axial direction of the rotation axis.

13. The linear motion device according to any one of claims 9-12, characterized in that, The outer edge profile of the cam is a Reichelk triangle.

14. The linear motion device according to claim 9, characterized in that, The base has a first end and a second end disposed opposite to each other in the moving direction of the driven member, and the first end is provided with a first connection structure for connecting to the first vibration damping component. The second end is provided with a through hole communicating with the receiving cavity. An actuating rod is provided on the housing. The actuating rod passes through the through hole to connect to the second vibration damping component. The actuating rod extends along the moving direction of the driven component.

15. The linear motion device according to claim 14, characterized in that, The actuating rod is connected to the second vibration damping component through a second connecting structure, and an elastic element is provided between the base and the second connecting structure.

16. A suspension system, characterized in that, The device includes the linear motion device according to any one of claims 1-15, the linear motion device being adapted to be connected between the vehicle body and the wheel, the vehicle body being the first component to be damped, and the wheel being the second component to be damped.

17. A vehicle, characterized in that, Includes the suspension system as described in claim 16.

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