CN221162078U - Actuator, suspension assembly and vehicle - Google Patents

Abstract

The utility model discloses an actuator, a suspension assembly and a vehicle, wherein the actuator comprises a linear motion part and a shell, and the linear motion part is at least partially positioned in the shell; the driving device is used for driving the linear motion part to move relative to the shell; the guiding limiting piece is arranged in the shell and comprises a guiding piece and a limiting piece, at least one end of the guiding piece is provided with the limiting piece, the guiding piece is used for guiding the linear motion part to move along the first direction relative to the shell, and the limiting piece is used for limiting the movement stroke of the linear motion part along the first direction. By the aid of the guide limiting piece, stability in the relative movement process of the linear motion component and the shell is improved, and the stroke of the actuator is effectively limited.

Description

Actuator, suspension assembly and vehicle

Technical Field

The utility model relates to the field of actuators, in particular to an actuator, a suspension assembly and a vehicle.

Background

The actuator that is equipped with at present in the vehicle has rectilinear motion part and casing, and the relative casing removal of drive arrangement drive rectilinear motion part can realize adjusting the automobile body of vehicle and the clearance between the wheel, makes the vehicle in-process more steady, but among the current actuator, rectilinear motion part and casing relatively move in-process stability poor, and can't restrict the stroke of actuator effectively, has reduced the job stabilization nature of actuator.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide an actuator that promotes stability during relative movement of a linear motion member and a housing, and effectively limits the stroke of the actuator.

The utility model further provides a suspension assembly.

The utility model further provides a vehicle.

An actuator according to the present utility model includes:

The linear motion component is at least partially positioned in the shell;

The driving device is used for driving the linear motion part to move relative to the shell;

The guiding limiting piece is arranged in the shell and comprises a guiding piece and a limiting piece, at least one end of the guiding piece is provided with the limiting piece, the guiding piece is used for guiding the linear motion part to move along the first direction relative to the shell, and the limiting piece is used for limiting the movement stroke of the linear motion part along the first direction.

According to the actuator, the guide limiting piece is arranged, so that stability in the relative movement process of the linear motion part and the shell is improved, and the stroke groove surface of the actuator is effectively limited.

In some examples of the present utility model, the guide stopper is formed with a guide groove in which a portion of the linear motion member is disposed.

In some examples of the utility model, the actuator further comprises: the transmission assembly comprises a power input gear and a power output gear which are in transmission connection, and the driving device is used for driving the power input gear to act;

the outer peripheral wall of the linear motion part is also provided with a guide surface and a rack structure, the guide surface is matched with the guide groove in a guide way, and the power output gear is meshed with the rack structure.

In some examples of the utility model, the guide limiter is disposed opposite the power take-off gear in a second direction, the linear motion member being located between the guide limiter and the power take-off gear, the second direction being perpendicular to the first direction.

In some examples of the utility model, the guide has a first mounting hole and the stop has a second mounting hole that mates with the first mounting hole in the first direction.

In some examples of the utility model, the stop is configured as a flexible member.

In some examples of the utility model, the guide comprises: bearing bush, bearing bush is formed with the guide way.

In some examples of the utility model, the guide further comprises: the mounting seat is fixedly arranged on the shell, and the bearing bush is fixedly arranged on one side of the mounting seat facing the linear motion component.

In some examples of the present utility model, a mounting groove is formed on a side of the mounting seat facing the linear motion member, and the bearing bush is fitted to the mounting groove.

In some examples of the utility model, at least one end of the mounting groove has a stop portion in the first direction, the stop portion abutting the bearing shell to limit movement of the bearing shell in the first direction.

In some examples of the utility model, the limit portion is a limit boss or a limit clip spring.

In some examples of the present utility model, the mounting base has a first fixing hole, and the first fixing hole is matched with the housing to fix the guiding and limiting member to the housing.

In some examples of the utility model, the mounting block has a first mounting hole and the bearing shell has a second mounting hole that fits with the first mounting hole.

In some examples of the utility model, the shape of the guide surface is adapted to the shape of the guide groove;

the rack structure is positioned on one side of the linear motion component, which is away from the guide surface.

In some examples of the utility model, the actuator further comprises: the connecting piece is fixedly arranged at one end of the linear motion component, is positioned outside the shell and is suitable for being connected with a vehicle body or a wheel end assembly of the vehicle.

The suspension assembly according to the present utility model includes the actuator described above.

A vehicle according to the present utility model includes the suspension assembly described above.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model 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 schematic view of an actuator according to an embodiment of the present utility model from a first view angle;

FIG. 2 is a schematic structural view of an actuator according to an embodiment of the present utility model at a second view angle;

FIG. 3 is a schematic view of a guide limiter according to an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a guide according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a first view of a mount according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a second view of a mount according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of a bearing shell according to an embodiment of the present utility model.

Reference numerals:

An actuator 100; a linear motion member 1; a connecting member 11; a moving member body 12; abutting the limiting piece 13; a rack structure 120; a housing 2; a connection portion 21; the fitting space 22; a guide limiting member 3; a guide 3a; a stopper 3b; a guide groove 30a; the avoidance groove 30b; an oil reservoir 301; bearing shell 31; a steel plate layer 31a; copper powder layer 31b; a plastic layer 31c; a mounting base 32; a mounting groove 320; a limiting portion 321; a limit boss 3210; an elastic member 33; a first fitting hole 311; a second fitting hole 312; a first fixing hole 313; a first mounting hole 314; a second mounting hole 315; a driving device 4; a drive motor 41; a motor shaft 410; a transmission assembly 42; a power input gear 421; a power take-off gear 422; a transmission gear 423; a drive shaft 424; a sensor 43.

Detailed Description

Embodiments of the present utility model 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 utility model.

Referring now to fig. 1-7, an actuator 100 according to an embodiment of the present utility model will be described, wherein the actuator 100 may be applied to a suspension assembly of a vehicle, but the present utility model is not limited thereto, and the actuator 100 may be applied to other devices where the actuator 100 is required to be disposed, such as a suspension assembly of an aircraft, and the present utility model is described with reference to the application of the actuator 100 to a suspension assembly of a vehicle.

As shown in fig. 1 and 2, the actuator 100 according to the embodiment of the utility model includes a linear motion member 1, a housing 2, a driving device 4 and a guiding and limiting member 3, the linear motion member 1 is at least partially located in the housing 2, the driving device 4 is used for driving the linear motion member 1 to move relative to the housing 2, the guiding and limiting member 3 is disposed in the housing 2, the guiding and limiting member 3 includes a guiding and limiting member 3a and a limiting member 3b, at least one end of the guiding and limiting member 3a is provided with a limiting member 3b, the guiding and limiting member 3a is used for guiding the linear motion member 1 to move relative to the housing 2 along a first direction, and therefore, by providing the guiding and limiting member 3a, the guiding and limiting member 3a is used for guiding the linear motion member 1 to move relative to the housing 2 along the first direction, the stability of the linear motion member 1 is improved, and during the movement of the linear motion member 1 relative to the housing 2, the linear motion member 1 is suitable for abutting and limiting the relative position of the housing 2 is limited, thereby, by providing the guiding and limiting member 3a relative movement of the linear motion member 1 and the housing 2 along the first direction.

In some embodiments, the X-direction shown in fig. 1 and 2 is a first direction, which may be the length direction of the actuator 100, and the X-direction shown in fig. 3-7 is a first direction, which may be the length direction of the guide limiter 3.

In some embodiments, one of the linear motion member 1 and the housing 2 is adapted to be coupled to a body of a vehicle, and the other of the linear motion member 1 and the housing 2 is adapted to be coupled to a wheel end assembly of the vehicle such that the actuator 100 is coupled between the body and the wheel end assembly.

The driving device 4 drives the linear motion member 1 to relatively move in the first direction with respect to the housing 2 so that the actuator 100 is configured as an active actuator, and the length of the actuator 100 can be adjusted (i.e., the length of the actuator 100 is extended or shortened) so that the size of the ground clearance between the vehicle body and the road surface can be adjusted for a vehicle equipped with the actuator 100 of the present utility model.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the actuator 100 further includes a connecting member 11, where the connecting member 11 is fixedly disposed at one end of the linear motion member 1, and when the linear motion member 1 is assembled in the housing 2, the connecting member 11 fixedly connected to the linear motion member 1 is located outside the housing 2, and the connecting member 11 is adapted to be connected to a vehicle body or a wheel end assembly of the vehicle, so that the linear motion member 1 is connected to the vehicle body or the wheel end assembly.

As shown in fig. 1 and 2, in some embodiments, the actuator 100 may further include a connection portion 21, where the connection portion 21 is fixed to the housing 2 and is away from one end of the linear motion member 1, and in the first direction, the connection member 11 and the connection portion 21 are disposed opposite to each other, which may be understood that, in the first direction, the connection member 11 and the connection portion 21 are located at two ends of the actuator 100, respectively, the connection member 11 is connected to one of the vehicle body and the wheel end assembly, and the connection portion 21 is connected to the other of the vehicle body and the wheel end assembly, so that the actuator 100 is connected between the vehicle body and the wheel end assembly.

As shown in fig. 1, in some embodiments of the present utility model, when the actuator 100 is applied to a vehicle, the connection part 21 is located above the connection part 11 in the height direction of the vehicle, the connection part 21 is connected to the body of the vehicle, and the connection part 11 is connected to the wheel end assembly, so that the actuator 100 is connected between the wheel end assembly and the body, and the relative movement of the linear motion member 1 and the housing 2 can reduce the excitation of the body by the road surface through the wheel end assembly, and improve the NVH performance (Noise, vibration, harshness, noise, vibration and harshness) of the vehicle.

In addition, the driving device 4 drives the linear motion member 1 to move relative to the housing 2 so that the actuator 100 is in an extended state, so that the height of the vehicle body is raised in the height direction of the vehicle to increase the ground clearance of the vehicle body, the passing performance of the vehicle is improved, and when the actuator 100 is in a shortened state, the height of the vehicle body is lowered to decrease the ground clearance of the vehicle body, and the running wind resistance of the vehicle is reduced.

In some embodiments, the actuator 100 may further include an elastic member 33, where the elastic member 33 is located between the linear motion member 1 and the housing 2 along the first direction, and by disposing the elastic member 33 between the linear motion member 1 and the housing 2, and connecting the elastic member 33 with both the linear motion member 1 and the housing 2, the elastic member 33 may limit the stroke of the actuator 100 during the extension of the actuator 100, avoid the excessive extension of the actuator 100, and support the elastic member 33 between the linear motion member 1 and the housing 2 during the shortening of the actuator 100, avoid the excessive shortening of the actuator 100, and further reduce the excitation of the road surface to the vehicle body by the wheel end assembly by the elastic member 33 by elastic deformation, so as to improve the NVH performance of the vehicle.

For example, in the running process of the vehicle, the acting force of the road surface on the wheel end assembly acts on the linear motion component 1 to enable the linear motion component 1 to move towards the shell 2, the actuator 100 is shortened, in the moving process of the linear motion component 1 towards the shell 2, the elastic piece 33 is pressed and deformed, so that the acting force of the road surface on the wheel end assembly is absorbed through elastic deformation of the elastic piece 33, the acting force of the road surface on the wheel end assembly is prevented from being further transmitted to the body of the vehicle, and therefore NVH performance of the vehicle can be improved, and driving feeling of the vehicle is further improved.

In some embodiments, the elastic member 33 may be configured as an elastic rubber, a spring, or the like, which may be elastically deformed, and in some embodiments of the present utility model, as shown in fig. 1 and 2, the elastic member 33 is configured as a coil spring, which is sleeved on the linear motion member 1, and which is connected between the linear motion member 1 and the housing 2 in the first direction.

In some embodiments, as shown in fig. 1 and 3, an assembly space 22 is formed in the housing 2, at least part of the structure of the linear motion member 1 is located in the assembly space 22 when the linear motion member 1 and the housing 2 are assembled in a matched manner, the linear motion member 1 is matched with the guide limiting piece 3 located in the assembly space 22 in a guide manner, specifically, the linear motion member 1 is matched with the guide piece 3a in a guide manner, and in addition, during the moving process of the linear motion member 1, the linear motion member 1 is suitable for being abutted and limited by the limiting piece 3b, so that the movement of the linear motion member 1 relative to the housing 2 is limited.

In summary, according to the actuator 100 of the embodiment of the present utility model, the guiding and limiting member 3 is provided, where the guiding and limiting member 3a is used to guide the linear motion member 1 to move along the first direction relative to the housing 2, so as to improve the stability of the linear motion member 1, and the linear motion member 1 is adapted to abut against the limiting member 3b to limit the relative position of the linear motion member 1 and the housing 2 during the movement of the linear motion member 1 relative to the housing 2, so that the guiding and limiting member 3 is provided, so as to improve the stability during the relative movement of the linear motion member 1 and the housing 2, and effectively limit the stroke of the actuator 100.

In some embodiments of the present utility model, as shown in fig. 4, the guide stopper 3 is formed with a guide groove 30a, and a portion of the linear motion member 1 is disposed in the guide groove 30a so that the guide stopper 3 is in guide engagement with the linear motion member 1.

In some embodiments, the guide 3a is formed with a guide groove 30a, or alternatively, the guide 3a and the stopper 3b are formed together with a guide groove 30a, and in some embodiments of the present utility model, the guide 3a is formed with the guide groove 30a as an example.

When the linear motion member 1 is in guide engagement with the guide stopper 3, a part of the linear motion member 1 is adapted to be placed in the guide groove 30a, and the guide groove 30a is extended in the first direction, so that the linear motion member 1 moves in the first direction in the guide groove 30a relative to the guide stopper 3.

In some embodiments of the present utility model, as shown in connection with fig. 1 and 2, the actuator 100 further comprises: the transmission assembly 42, the transmission assembly 42 includes power input gear 421 and power take off gear 422 that the transmission connects, the driving device 4 is used for driving the power input gear 421 to act, the peripheral wall of the linear motion assembly 1 also forms guide surface and rack structure 120, the guide surface cooperates with guide slot 30a direction, the power take off gear 422 meshes with rack structure 120. In some embodiments, as shown in fig. 1, 2 and 4, the guide member 3a is formed with a first open end and a second open end opposite to each other along the first direction, and in a direction perpendicular to the first direction, the guide member 3a is further formed with a third open end, the first open end and the second open end are configured as longitudinal openings of the guide groove 30a, the third open end is configured as a lateral opening of the guide groove 30a, when the linear motion member 1 is in guiding engagement with the guide limiting member 3, the linear motion member 1 penetrates through the first open end and the second open end, so that the linear motion member 1 moves along the guide groove 30a relative to the guide limiting member 3, the third open end is disposed corresponding to the rack structure 120, thereby avoiding the rack structure 120 from rubbing against the groove surface of the guide groove 30a during the movement of the linear motion member 1 relative to the guide limiting member 3, protecting the rack structure 120, and prolonging the service life of the rack structure 120.

The third open end is used for avoiding the rack structure 120, and simultaneously can enable the rack structure 120 to be meshed with the power output gear 422, and the guiding limiting piece 3 is small in guiding structure and simple in structure, so that the guiding limiting piece 3 is small in mass, and the actuator 100 is further compact in structure and light in weight.

In some embodiments of the present utility model, as shown in connection with fig. 1, the guide stopper 3 is disposed opposite the power take-off gear 422 in a second direction, and the linear motion member 1 is located between the guide stopper 3 and the power take-off gear 422, the second direction being perpendicular to the first direction.

In some embodiments, as shown in fig. 1, in the second direction, the guiding limiter 3 provides the linear motion member 1 with a supporting force toward the power output gear 422, the power output gear 422 is engaged with the linear motion member 1, the power output gear 422 applies a pressure toward the guiding limiter 3 to the linear motion member 1, and the guiding limiter 3 is disposed opposite to the power output gear 422 in the second direction, so that the supporting force and the pressure effectively limit the position of the linear motion member 1 in the second direction, and the stability of the linear motion member 1 is ensured.

Further, the direction of the supporting force is collinear with the direction of the pressing force, so that the position of the linear motion member 1 in the second direction is further restricted, and the stability of the linear motion member 1 is improved.

As shown in connection with fig. 1, 2 and 5, in some embodiments, the driving device 4 may include a driving motor 41, a motor shaft 410 of the driving motor 41 is fixedly connected with a power input gear 421, the motor shaft 410 rotates to rotate the power input gear 421 in an operating state of the driving motor 41, the power output gear 422 rotates due to a driving connection of the power input gear 421 and the power output gear 422, and the linear motion member 1 moves in the first direction due to engagement of the power output gear 422 with the rack structure 120.

In some embodiments, as shown in connection with fig. 1, 2 and 5, the rack structure 120 is disposed to extend along the length direction of the linear motion member 1, and the linear motion member 1 is disposed along the first direction, so that the rack structure 120 is disposed to extend along the first direction.

In some embodiments, as shown in fig. 1, the driving device 4 may further include a sensor 43, where the sensor 43 is configured to detect a rotational position, an angular velocity, and an angular acceleration of the motor shaft 410 of the driving motor 41, so as to monitor an operating state of the driving motor 41.

As shown in fig. 3, in some embodiments, the limiting member 3b is fixedly mounted on the upper end of the mounting seat 32 along the first direction, and in conjunction with the process of moving the linear motion member 1 downward along the first direction as shown in fig. 1, the linear motion member 1 is adapted to abut against the limiting member 3b mounted on the upper end of the mounting seat 32 to limit the linear motion member 1 to move further downward along the first direction. In some embodiments, the limiting member 3b is fixedly mounted on the lower end of the mounting seat 32 along the first direction, and as shown in fig. 1, during the movement of the linear motion member 1 along the first direction, a part of the linear motion member 1 is adapted to abut against the limiting member 3b mounted on the lower end of the mounting seat 32 to limit the linear motion member 1 to move further upwards along the first direction.

Therefore, the guide stopper 3 has a stopper 3b for restricting the movement of the linear motion member 1 in the first direction to function as a stopper for restricting the movement range of the linear motion member 1 in the first direction, so that the stroke of the actuator 100 can be effectively controlled, and it can be understood that the longest and/or shortest state of controlling the length of the actuator 100 is achieved by the abutment and restriction of the linear motion member 1 with the stopper 3b provided at the upper end of the mount 32 and/or the stopper 3b provided at the lower end of the mount 32 during the relative movement of the linear motion member 1 and the housing 2 in the first direction.

In addition, referring to fig. 1 and 2, the power output gear 422 is engaged with the rack structure 120 to enable the linear motion member 1 to move relative to the guide limiter 3 in the first direction, and the linear motion member 1 abuts against the limiter 3b to achieve the limiting effect, when there is a special situation, for example, when there is a tendency that the power output gear 422 and the rack structure 120 are separated from each other in the first direction, the linear motion member 1 abuts against the limiter 3b to limit, so that the power output gear 422 is always engaged with the rack structure 120 in the first direction, the occurrence of collision between the power output gear 422 and the area of the linear motion member 1 where the rack structure 120 is not provided is avoided, and the reliability of the actuator 100 is improved.

In addition, in the first direction, the first vibration reduction body linear motion part 1 is suitable for being abutted and limited by the limiting piece 3b, so that the moving range of the first vibration reduction body linear motion part 1 is effectively limited, the stroke of the actuator 100 is ensured, the condition that the power output gear 422 and the rack structure 120 are separated from each other in the first direction is avoided, and the use reliability of the actuator 100 is improved.

In addition, the limiting sliding bearing guiding limiting part 3 is small in guiding structure and simple in structure, so that the mass of the limiting sliding bearing guiding limiting part 3 is small, and the actuator 100 is further beneficial to compact structure and light weight design.

In some embodiments of the present utility model, as shown in fig. 1, 2 and 3, the limiting member 3b may be formed with a relief groove 30b, and a projection surface of the guide groove 30a and a projection surface of the relief groove 30b completely coincide in the first direction, and the relief groove 30b is adapted to relief the linear motion member 1, so as to ensure relative movement of the linear motion member 1 and the housing 2 in the first direction.

It should be noted that, in the first direction, the projection plane of the guide groove 30a and the projection plane of the avoidance groove 30b completely overlap may include the following two cases, where one case is: the shape and the area of the projection surface of the guide groove 30a are the same as those of the projection surface of the avoidance groove 30b, and the projection surface of the guide groove 30a and the projection surface of the avoidance groove 30b are completely overlapped; another case is: the area of the projection surface of the guide groove 30a is smaller than the area of the projection surface of the avoidance groove 30b, and when the projection surface of the guide groove 30a and the projection surface of the avoidance groove 30b are projected onto the same plane in the first direction, the projection surface of the guide groove 30a is completely located in the projection surface of the avoidance groove 30b, and the projection surface of the guide groove 30a and the projection surface of the avoidance groove 30b are completely overlapped.

In some embodiments of the present utility model, as shown in connection with fig. 3-6, in a first direction, the guide 3a has a first mounting hole 314 and the stopper 3b has a second mounting hole 315 fitted with the first mounting hole 314, so that the stopper 3b is fitted to the guide 3a.

As shown in fig. 3-6, in some embodiments, a first mounting hole 314 is formed at one end of the guide member 3a along the first direction, for example, as shown in fig. 3 and 4, a first mounting hole 314 is formed at an upper end of the guide member 3a, or a first mounting hole 314 is formed at a lower end of the guide member 3a, or a first mounting hole 314 is formed at both the upper end of the guide member 3a and the lower end of the guide member 3a, and a second mounting hole 315 of the stop member 3b is correspondingly matched with the corresponding first mounting hole 314, and is fixed by a screw or bolt, etc., so that the stop member 3b is detachably assembled at the upper end and/or the lower end of the guide member 3a, and the stop member 3b is detachably assembled at the guide member 3a, so that the stop member 3b can be replaced during long-term use of the actuator 100, thereby ensuring the use reliability of the stop member 3 b.

In some embodiments of the present utility model, as shown in fig. 3, the limiting member 3b is configured as a flexible member, for example, the limiting member 3b may be made of a deformable material such as rubber, so as to avoid hard collision between a part of the structure of the linear motion member 1 and the limiting member 3b when the part of the structure of the linear motion member 1 is in abutting contact with the limiting member 3b, and the limiting member 3b may play a role in buffering, reduce the acting force generated by the linear motion member 1 on the guiding member 3a, and ensure the stability in use of the guiding member 3 a. In addition, the stopper 3b may be configured as an elastic member, for example, the stopper 3b may be made of a material that can be elastically deformed, such as rubber, or the stopper 3b may be configured as a spring, and the stopper 3b may be configured as an elastic member, so that the stopper 3b may return to its original shape through elastic deformation after the stopper 3b is released from abutment with the linear motion member 1.

In some embodiments, the second mounting hole 315 is configured as a counter bore, so that when the fixing member fixes the limiting member 3b to the mounting seat 32, the screw head of the screw or the bolt is located in the stepped hole of the counter bore, thereby preventing the screw head from protruding from the limiting member 3b, so as to avoid hard collision between a part of the structure of the linear motion member 1 and the screw head, and ensure that a part of the structure of the linear motion member 1 is only abutted to the limiting member 3b, and part of the acting force is absorbed by deformation of the limiting member 3 b.

In some embodiments of the present utility model, as shown in fig. 1, 2 and 3, the guide stopper 3 is located at one side of the rectilinear motion component 1 along the second direction, the first direction being perpendicular to the second direction, and the guide 3a is formed with a guide groove 30a recessed toward the inside of the guide 3a at one side of the guide 3a facing the rectilinear motion component 1, and it is also understood that when the guide 3a is fixedly assembled in the assembly space 22, the third open end of the guide 3a is disposed toward the rectilinear motion component 1 in the second direction so that a part of the structure of the rectilinear motion component 1 is located in the guide groove 30a in the second direction to guide the rectilinear motion component 1 to the guide 3 a.

Also, in some embodiments, the guide stopper 3 is disposed opposite to the linear motion member 1 in the second direction such that the first force generated by the guide 3a against the linear motion member 1 is opposite to the second force generated by the power output gear 422 against the linear motion member 1 in the second direction, so that the linear motion member 1 moves smoothly during the movement of the linear motion member 1 relative to the guide 3a, improving the movement stability of the linear motion member 1.

In some embodiments of the present utility model, as shown in fig. 3, 4 and 7, the guide 3a includes a bearing shell 31, the bearing shell 31 being formed with a guide groove 30a, and the bearing shell 31 is slidably engaged with a part of the structure of the linear motion member 1 to achieve the effect of moving the linear motion member 1 relative to the guide 3 a.

In some embodiments of the present utility model, as shown in fig. 7, the bearing bush 31 is arc-shaped to form the guide groove 30a, it may also be understood that the bearing bush 31 may be configured in an arc-shaped plate-like structure, and the inner wall of the bearing bush 31 and the outer wall of the bearing bush 31 are each configured in an arc-shaped surface, wherein the inner wall of the bearing bush 31 is configured as a groove surface of the guide groove 30a of the guide 3a, and the groove surface of the guide groove 30a is adapted to be engaged with a part of the structure of the linear motion member 1 so that a part of the structure of the linear motion member 1 is slidably engaged with the bearing bush 31, i.e., a part of the peripheral wall of the linear motion member 1 is slidably engaged with the bearing bush 31.

In some embodiments of the present utility model, as shown in fig. 4 to 6, the guide member 3a further includes a mounting seat 32, the mounting seat 32 is fixedly arranged on the housing 2, and the bearing bush 31 is fixedly arranged on a side of the mounting seat 32 facing the linear motion member 1.

In some embodiments, as shown in fig. 4 to 7, the bearing bush 31 is detachably mounted on the mounting seat 32, and due to the sliding fit between the linear motion component 1 and the bearing bush 31, certain abrasion may occur on the groove surface of the guide groove 30a during long-term use of the actuator 100, and the bearing bush 31 is detachably mounted on the mounting seat 32, so that the worn bearing bush 31 can be replaced during long-term use of the actuator 100, and the use reliability of the guide member 3a is ensured.

In some embodiments of the present utility model, as shown in fig. 3, 4, 5 and 7, the mounting seat 32 has a first fitting hole 311, and the bearing shell 31 has a second fitting hole 312 fitted with the first fitting hole 311.

In some embodiments, the bearing shell 31 is mounted to the mounting block 32 by fasteners such as screws or bolts so that the bearing shell 31 is removably mounted to the mounting block 32. In the process of assembling the bearing bush 31 on the mounting seat 32, the first assembly hole 311 and the second assembly hole 312 are aligned, and then the fixing piece is arranged in the first assembly hole 311 and the second assembly hole 312 in a penetrating manner, and the fixing piece is used for fixing the bearing bush 31 on the mounting seat 32.

In some embodiments, the second assembly hole 312 is configured as a counter bore, so that when the bearing shell 31 is fixed on the mounting seat 32 by the fixing member, the screw head of the screw or the bolt is located in the stepped hole of the counter bore, thereby preventing the screw head from protruding out of the groove surface of the guide groove 30a, preventing the screw head from contacting the linear motion member 1, and ensuring the use reliability of the guide member 3 a.

In some embodiments, the bearing shell 31 may be fixedly connected to the mounting base 32 by welding, which is beneficial to improving the assembly stability of the bearing shell 31 and the mounting base 32, so as to reduce the risk of mutual movement of the bearing shell 31 and the mounting base 32, for example, to avoid the bearing shell 31 from being separated from the mounting base 32.

It should be noted that, in some embodiments, taking the guide member 3a including the bearing shell 31 and the mounting seat 32 as an example, the bearing shell 31 is indirectly fixedly mounted to the housing 2 through the mounting seat 32, but the present application is not limited thereto, and in some embodiments, the guide member 3a may include only the bearing shell 31, and the bearing shell 31 is directly fixedly mounted to the housing 2.

In some embodiments of the present utility model, as shown in fig. 1 and 5, a mounting groove 320 is formed at a side of the mounting seat 32 facing the linear motion member 1, and the bearing bush 31 is fitted to the mounting groove 320. In some embodiments, the dimensions of the mounting groove 320 are adapted to the dimensions of the bearing shell 31, the bearing shell 31 being fully assembled within the mounting groove 320. In some embodiments, the size of the mounting groove 320 is smaller than the size of the bearing shell 31, and a portion of the structure of the bearing shell 31 fits within the mounting groove 320.

As shown in connection with fig. 4-7, taking the example of the bearing bush 31 being configured as an arc, correspondingly, the groove surface of the mounting groove 320 being configured as an arc surface, the arc length of the groove surface of the mounting groove 320 may be greater than or equal to the arc length of the bearing bush 31, so that when the bearing bush 31 is fitted with the mounting groove 320, the bearing bush 31 is completely fitted in the mounting groove 320, and in some embodiments, when the bearing bush 31 is completely fitted in the mounting groove 320, the bearing bush 31 may abut against the mounting seat 32 in the circumferential direction of the bearing bush 31, thereby restricting the bearing bush 31 from rotating relative to the mounting seat 32 in its own circumferential direction.

In some embodiments, the arc length of the groove surface of the mounting groove 320 is smaller than the arc length of the bearing bush 31, and when the bearing bush 31 is assembled with the mounting seat 32, the projection surface area of the bearing bush 31 is larger than the projection surface area of the mounting groove 320 in the second direction, and part of the structure of the bearing bush 31 is assembled in the mounting groove 320.

It should be noted that, in some embodiments described above, the bearing bush 31 is configured as an arc-shaped plate structure, and the inner wall of the bearing bush 31 and the outer wall of the bearing bush 31 are both configured as arc surfaces, but the present application is not limited thereto, the bearing bush 31 may be configured as a block structure, the guide groove 30a configured as an arc surface is formed on one side of the bearing bush 31, that is, the groove surface of the guide groove 30a is configured as an arc surface, in the second direction, the surface of one side of the bearing bush 31 facing away from the guide groove 30a may be configured as a plane, and accordingly, the cross section of the mounting groove 320 perpendicular to the second direction may be configured as a rectangular cross section, so that the bearing bush 31 is adapted to be fitted into the mounting groove 320.

In some embodiments of the present utility model, as shown in fig. 5 and 6, at least one end of the mounting groove 320 has a limiting portion 321 along the first direction, where the limiting portion 321 abuts against the bearing bush 31 to limit the movement of the bearing bush 31 in the first direction, so as to avoid the bearing bush 31 and the mounting seat 32 from being separated from each other during the process of moving the linear motion member 1 along the first direction relative to the guiding limiting member 3, and in addition, the limiting portion 321 may play a role of assembly limiting during the process of assembling the bearing bush 31 on the mounting seat 32, so as to facilitate the assembly of an operator and improve the assembly efficiency.

In some embodiments of the present utility model, as shown in fig. 3-6, the limiting portion 321 is a limiting boss 3210 or a limiting snap spring.

As shown in fig. 3 to 6, in some embodiments, two ends of the mounting groove 320 along the first direction are respectively formed with a limiting portion 321, wherein the limiting portion 321 at the upper end is configured as a limiting boss 3210, and the limiting portion 321 at the lower end is configured as a limiting snap spring. In the process of assembling the bearing bush 31 on the mounting seat 32, the bearing bush 31 is installed in the mounting groove 320 from the lower end along the first direction, the bearing bush 31 moves upwards from bottom to top along the first direction under the action of external force so as to be limited by abutting the upper end of the bearing bush 31 with the limiting boss 3210 in the first direction, and then the bearing bush 31 is clamped in the mounting groove 320 by using a clamp spring and is positioned at the lower end of the bearing bush 31 so as to be limited at two ends of the bearing bush 31 respectively in the first direction, so that the bearing bush 31 is limited to move relative to the mounting seat 32 in the first direction. And in some embodiments, a snap spring groove is formed at the lower end of the mounting groove 320 along the first direction, and the snap spring is snapped into the snap spring groove, so that the snap spring is reliably assembled in the mounting groove 320 to limit the bearing bush 31.

In the above embodiment, the snap spring is engaged with the lower end of the mounting groove 320 in the first direction, so the snap spring groove is provided at the lower end of the mounting groove 320, but the present application is not limited thereto, and the upper end of the mounting groove 320 may be provided with the snap spring groove when the snap spring is engaged with the upper end of the mounting groove 320.

In some embodiments, the limiting portions 321 at the upper and lower ends of the mounting groove 320 are configured as limiting bosses 3210 in the first direction, so that the bearing shell 31 is installed into the mounting groove 320 from the open end of the mounting groove 320 in the second direction, and the two ends of the bearing shell 31 correspondingly abut against the limiting bosses 3210 at the upper and lower ends of the mounting groove 320 in the first direction.

In some embodiments of the present utility model, as shown in fig. 6, the mounting base 32 has a first fixing hole 313, and the first fixing hole 313 is assembled with the housing 2 in a matching manner so that the guiding and limiting member 3 is fixed to the housing 2. As shown in fig. 5 and 6, a first fixing hole 313 is formed on one side of the mounting seat 32 facing away from the mounting groove 320, and a second fixing hole corresponding to the first fixing hole 313 is formed on the housing 2, so that the first fixing hole 313 corresponds to and communicates with the second fixing hole in the process of fixedly assembling the guide limiting member 3 to the housing 2, and then the mounting seat 32 is fixedly arranged on the housing 2 by adopting a fixing member such as a screw or a bolt, so that the guide limiting member 3 is fixedly arranged on the housing 2 and positioned in the assembling space 22.

In some embodiments of the present utility model, as shown in connection with fig. 1 and 3, the shape of the guide surface is adapted to the shape of the guide groove 30a so that the rectilinear motion component 1 is slidably fitted with the guide stopper 3.

In some embodiments, the cross-section of the rectilinear motion component 1 is circular in configuration, so that the cross-section of the guide surface is arc-shaped, and the cross-section of the guide groove 30a is arc-shaped to fit the guide surface.

Alternatively, in some embodiments, the rectilinear motion component 1 is configured as a prism, and the groove surface of the guide groove 30a is shaped so as to fit the guide stopper 3 slidingly with the rectilinear motion component 1.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the rack structure 120 is located on a side of the linear motion member 1 facing away from the guide surface, so that the power output gear 422 and the guide stopper 3 are disposed opposite to each other in the second direction, and stability of the linear motion member 1 is ensured.

In some embodiments of the present utility model, as shown in fig. 3, 4 and 7, the groove surface of the guide groove 30a is provided with an oil storage hole 301, and the oil storage hole 301 is used for storing lubricating oil, so that the lubricating oil adheres to the groove surface of the guide groove 30a in the process of sliding fit of the linear motion member 1 and the guide piece 3a, and the lubricating oil lubricates the guide groove 30a and the linear motion member 1, so that sliding friction force is reduced, and the self-lubrication of the guide groove 30a is achieved.

In some embodiments, as shown in fig. 7, the groove surface of the guide groove 30a has a plurality of oil pockets 301, two adjacent oil pockets 301 are spaced apart, and by providing a plurality of oil pockets 301, not only can the lubrication oil be sufficiently lubricated between the guide groove 30a and the linear motion member 1 be ensured, but also the contact area between the guide groove 30a and the linear motion member 1 can be reduced, and further the sliding friction force can be reduced.

In some embodiments of the present utility model, as shown in fig. 7, the bearing bush 31 includes a steel plate layer 31a, a copper powder layer 31b and a plastic layer 31c, the copper powder layer 31b is connected between the steel plate layer 31a and the plastic layer 31c, wherein the steel plate layer 31a plays a role in assembly positioning and bearing pressure, the copper powder layer 31b plays a role in connecting the steel plate layer 31a and the plastic layer 31c and assists in antifriction, the plastic layer 31c is made of wear-resistant plastic, the plastic layer 31c forms a guide groove 30a, and the linear motion member 1 slides and rubs with the plastic layer 31c during sliding fit of the linear motion member 1 with the guide 3 a. In some embodiments, the groove surface of the guide groove 30a is coated with an antifriction material to reduce friction during the sliding engagement of the linear motion member 1 with the guide 3 a.

In some embodiments, the linear motion member 1 includes a motion member body 12 and an abutment limiter 13, the abutment limiter 13 being assembled to the motion member body 12, the abutment limiter 13 being adapted to abut against the limiter 3b to limit the relative positions of the linear motion member 1 and the guide limiter 3 in the first direction during the relative movement of the linear motion member 1 and the housing 2 in the first direction.

In some embodiments, along the length direction of the moving part body 12, an abutment limiter 13 is fixedly arranged at one end of the moving part body 12, a connecting piece 11 is fixedly connected to the other end of the moving part body 12, and a guiding surface and a rack structure 120 are formed on the peripheral wall of the moving part body 12.

In some embodiments, the abutment limiter 13 may be configured as a nut, and the outer circumferential wall of the moving part body 12 is formed with external threads adapted to be screwed with the abutment limiter 13, so that the abutment limiter 13 is screwed with the moving part body 12, thereby detachably assembling the abutment limiter 13 to the moving part body 12, and in addition, the relative position of the abutment limiter 13 and the moving part body 12 is adjusted in the length direction of the moving part body 12 through the screwed engagement of the abutment limiter 13 and the moving part body 12, so that the effect of adjusting the stroke of the actuator 100 can be achieved.

The abutting limiting piece 13 fixedly arranged on the moving part body 12 abuts against the limiting piece 3b to limit, when the abutting limiting piece 13 abuts against the limiting piece 3b, the relative position of the abutting limiting piece 13 and the limiting piece 3b is limited, and the abutting limiting piece 13 is fixedly arranged on the moving part body 12, so that the effect of limiting the relative position of the linear moving part 1 and the guiding limiting piece 3 is achieved.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the driving assembly 42 further includes a driving gear 423 and a driving shaft 424, the driving shaft 424 is connected between the driving gear 423 and the power output gear 422, and the central axis of the driving gear 423, the central axis of the driving shaft 424 and the central axis of the power output gear 422 are collinear, that is, the driving gear 423, the driving shaft 424 and the power output gear 422 coaxially rotate, and the driving gear 423 is in meshed transmission with the power input gear 421, whereby the driving motor 41 drives the power input gear 421 to rotate, and then the driving gear 423 drives the power output gear 422 to rotate through the driving shaft 424 and is meshed with the rack structure 120 through the driving gear 422, and is in driving connection between the driving motor 41 and the linear motion member 1 through the driving assembly 42, and the driving assembly 42 converts the rotational motion of the driving motor 41 into the linear motion, thereby achieving the effect that the driving motor 41 drives the linear motion member 1 to move in the first direction.

In some embodiments, the tooth profile of the rack structure 120 may be configured as flat teeth or as helical teeth, and accordingly, the tooth profile of the power take-off gear 422 is configured as a tooth profile that mates with the rack structure 120, e.g., when the tooth profile of the rack structure 120 is configured as flat teeth, the tooth profile of the power take-off gear 422 is configured as flat teeth, and when the tooth profile of the rack structure 120 is configured as helical teeth, the tooth profile of the power take-off gear 422 is configured as helical teeth.

In some embodiments of the present utility model, taking the tooth-shaped structure of the rack structure 120 as an example, during the process of meshing and driving the power output gear 422 and the rack structure 120, the power output gear 422 generates an axial force and a radial force on the linear motion component 1, so as to ensure that the resultant force of the axial force and the radial force generated by the power output gear 422 on the linear motion component 1 acts on the effective range of the guide piece 3a, that is, in the circumferential direction of the linear motion component 1, the resultant force is opposite to the guide groove 30a, and the groove surface of the guide groove 30a is ensured to effectively ensure support constraint on the linear motion component 1, and further ensure that the linear motion component 1 can be in sliding fit with the groove surface of the guide groove 30 a.

In order to meet the requirement that the resultant force acts on the effective range of the guide 3a, the opening angle of the guide slot 30a is larger than the vector angle of the resultant force of the axial force and the radial force, wherein the vector angle of the resultant force is related to the magnitude of the axial force and the magnitude of the radial force, the axial force and the radial force are related to the helix angle of the tooth form of the rack structure 120, and the opening angle of the guide slot 30a is also different for different helix angles of the tooth form of the rack structure 120, for example: the helical angle of the tooth form of the rack structure 120 is 8 °, the vector angle of the resultant of the axial force and the radial force is 20.92 °, and the opening angle α is > 20.92 °; the helical angle of the tooth form of the rack structure 120 is 19.58 °, the vector angle of the resultant of the axial and radial forces is 42.64 °, and the opening angle α > 42.64 °.

The suspension assembly according to the embodiments of the present utility model includes the actuator 100 in some embodiments described above, and it should be noted that the features and advantages described above for the actuator 100 are equally applicable to the vehicle, and are not repeated herein.

The vehicle according to the embodiments of the present utility model includes the suspension assembly in some embodiments described above, and it should be noted that the features and advantages described above with respect to the actuator 100 are equally applicable to the vehicle, and are not repeated herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," 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 utility model. 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 utility model 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 utility model, the scope of which is defined by the claims and their equivalents.

Claims (16)

1. An actuator, comprising:

A linear motion member and a housing, the linear motion member being at least partially within the housing;

The driving device is used for driving the linear motion part to move relative to the shell;

The guide limiting piece is arranged in the shell and comprises a guide piece and a limiting piece, at least one end of the guide piece is provided with the limiting piece, the guide piece is used for guiding the linear motion part to move along a first direction relative to the shell, and the limiting piece is used for limiting the linear motion part to move along the first direction.

2. The actuator according to claim 1, wherein the guide stopper is formed with a guide groove, and a portion of the linear motion member is disposed in the guide groove.

3. The actuator of claim 2, further comprising: the transmission assembly comprises a power input gear and a power output gear which are in transmission connection, and the driving device is used for driving the power input gear to act;

The outer peripheral wall of the linear motion part is also provided with a guide surface and a rack structure, the guide surface is in guide fit with the guide groove, and the power output gear is meshed with the rack structure.

4. The actuator of claim 3, wherein the guide limiter is disposed opposite the power take-off gear in a second direction, the linear motion member being located between the guide limiter and the power take-off gear, the second direction being perpendicular to the first direction.

5. The actuator of any one of claims 1-4, wherein the guide has a first mounting hole and the stop has a second mounting hole that mates with the first mounting hole in the first direction.

6. The actuator of claim 1, wherein the stop member is configured as a flexible member.

7. The actuator of any one of claims 2-4, wherein the guide comprises: and the bearing bush is provided with the guide groove.

8. The actuator of claim 7, wherein the guide further comprises: the mounting seat is fixedly arranged on the shell, and the bearing bush is fixedly arranged on one side of the mounting seat facing the linear motion component.

9. The actuator according to claim 8, wherein a side of the mounting seat facing the linear motion member is formed with a mounting groove, and the bearing bush is fitted to the mounting groove.

10. The actuator of claim 9, wherein at least one end of the mounting groove has a stop portion in the first direction that abuts the bushing to limit movement of the bushing in the first direction.

11. The actuator of claim 10, wherein the limit portion is a limit boss or a limit clip.

12. The actuator of claim 8, wherein the mounting block has a first securing hole that mates with the housing to secure the guide limiter to the housing.

13. The actuator of claim 8, wherein the mounting block has a first mounting hole and the bearing shell has a second mounting hole that mates with the first mounting hole.

14. The actuator of claim 3, wherein the guide surface has a shape that matches the shape of the guide slot;

the rack structure is positioned on one side of the linear motion component, which is away from the guide surface.

15. A suspension assembly comprising an actuator according to any one of claims 1 to 14.

16. A vehicle comprising a suspension assembly according to claim 15.