CN221401367U - Guide, actuator, suspension assembly and vehicle - Google Patents

Abstract

The utility model discloses a guide member, an actuator, a suspension assembly and a vehicle, and relates to the technical field of vehicles. The guide member is used for the actuator, and the actuator includes a rack. The guide member defines a guide groove, and the inner wall surface of the guide groove is formed as an arc cylinder. The guide groove is used to guide the axial movement of the rack along the inner wall surface of the guide groove. According to the guide member of the utility model, the rack in the actuator can be guided, thereby improving the working stability of the actuator, and the guide groove with an inner wall surface as an arc cylinder has an opening. During the movement of the rack, the opening can provide avoidance for the side of the rack with teeth, and the teeth on the rack will not contact the inner wall surface of the guide groove, thereby improving the service life of the rack.

Description

Guides, Actuators, Suspension Assemblies and Vehicles

Technical Field

The utility model relates to the technical field of vehicles, in particular to a guide member, an actuator, a suspension assembly and a vehicle.

Background technique

Currently, more and more car models are equipped with active actuators, which can actively adjust the gap between the vehicle body and the wheels to make the vehicle more stable during driving. Some active actuators are equipped with racks, which can adjust the gap between the vehicle body and the wheels by moving the rack up and down. However, in existing actuators, the stability between the rack and the actuator housing during relative movement is poor, which reduces the working stability of the actuator.

Utility Model Content

The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a guide member, which can improve the working stability of the actuator.

The utility model also provides an actuator having the guide member.

The utility model also provides a suspension assembly with the actuator.

The utility model also provides a vehicle with the suspension assembly.

According to the first aspect of the utility model, the guide member is used for an actuator, the actuator includes a rack, the guide member defines a guide groove, the inner wall surface of the guide groove is formed as an arc cylinder, and the guide groove is used to guide the axial movement of the rack along the inner wall surface of the guide groove.

According to the guide member of the first aspect of the utility model, the rack in the actuator can be guided, thereby improving the working stability of the actuator, and the guide groove whose inner wall surface is an arc cylinder has an opening. During the movement of the rack, the opening can provide avoidance for the side of the rack where the teeth are provided, and the teeth on the rack will not contact the inner wall surface of the guide groove, thereby improving the service life of the rack.

According to some embodiments of the present invention, the central angle corresponding to the arc cylinder is not less than 20°; and/or the central angle corresponding to the arc cylinder is not greater than 180°.

According to some embodiments of the present invention, the guide member is an arc-shaped plate structure extending along an arc line, and the radial inner surface of the guide member encloses the guide groove.

According to some embodiments of the utility model, the guide member includes: a wear-resistant layer, a friction-reducing layer and a bearing layer, the wear-resistant layer, the friction-reducing layer and the bearing layer are arranged sequentially from inside to outside along the radial direction of the guide groove, and the hardness of the friction-reducing layer is smaller than that of the bearing layer.

According to some embodiments of the present invention, the friction reducing layer is a copper powder layer, and/or the bearing layer is a steel plate layer.

According to some embodiments of the present invention, at least one oil storage hole is formed on the inner wall of the guide groove.

According to some embodiments of the utility model, the inner wall of the guide groove is formed with at least one first fixing hole for inserting a fastener, and the first fixing hole penetrates the inner wall of the guide groove along the thickness direction; the first fixing hole includes: a first hole segment and a second hole segment connected in sequence along the length direction of the first fixing hole, the first hole segment is connected to one end of the second hole segment facing the guide groove, and the inner diameter of the first hole segment is larger than the inner diameter of the second hole segment.

According to the actuator of the second aspect of the utility model, the actuator is connected between the vehicle body and the wheel, and comprises: the guide member according to the first aspect of the utility model; a rack, the rack being movably disposed in the guide groove up and down.

According to the actuator of the second aspect of the utility model, by providing the guide member according to the first aspect of the utility model, the working stability and service life can be improved.

According to some embodiments of the utility model, the rack has an arc-shaped mating surface, which cooperates with the inner wall of the guide groove. The rack is provided with a plurality of bevel teeth arranged in sequence along the length direction of the rack, and the ratio of the central angle corresponding to the arc cylinder to the helix angle of the bevel tooth is greater than or equal to 6.

According to some embodiments of the utility model, the actuator further includes: a shell, a mounting cavity is defined in the shell, the rack is disposed in the mounting cavity, a guide hole is provided on the shell, the guide hole is connected to the mounting cavity, the guide member is fixed to the inner wall of the guide hole, and the lower end of the rack passes through the guide hole and extends out of the mounting cavity.

According to some embodiments of the utility model, the lower surface of the shell is provided with a downwardly extending guide portion, the guide portion defines the guide hole that passes through the guide portion up and down, and the guide member is provided on the inner wall of the lower part of the guide hole.

According to some embodiments of the present invention, a positioning groove is formed on the inner wall of the guide hole, and the guide member is fitted in the positioning groove.

According to some embodiments of the utility model, the lower end of the positioning groove passes through the lower end surface of the guide part, and the actuator also includes: a retaining spring, which is fixed on the inner wall of the guide hole and arranged on the lower side of the guide member, and the retaining spring abuts against the lower surface of the guide member.

According to some embodiments of the utility model, a fixing groove is formed on the inner wall of the guide hole, the fixing groove is arranged below the guide member, the fixing groove extends in a ring shape along the circumference of the guide hole, and the retaining ring is fixed in the fixing groove.

According to some embodiments of the present invention, a first fixing hole is formed on the guide member, a second fixing hole is formed on the inner wall of the guide hole, and the guide member is fixed to the shell by fasteners passing through the first fixing hole and the second fixing hole.

According to some embodiments of the present invention, the inner wall of the guide hole is further formed with an operating hole penetrating the inner wall of the guide hole along the thickness direction, and the operating hole and the second fixing hole are respectively arranged on opposite sides of the guide hole in the radial direction.

According to some embodiments of the utility model, the actuator also includes: a driving motor; a reduction mechanism and an output gear, the driving motor is connected to the output gear through the reduction mechanism for driving the output gear to rotate, the output gear is meshed with the rack for driving the rack to move up and down, and the reduction mechanism and the driving motor are arranged on both sides of the rack in the width direction.

The suspension assembly according to the third aspect of the utility model comprises: the actuator according to the second aspect of the utility model.

According to the suspension assembly of the third aspect of the utility model, by providing the actuator according to the second aspect of the utility model, active vibration reduction of the vehicle can be achieved, thereby improving the user experience.

The vehicle according to the fourth aspect of the utility model includes: a body and wheels; in the above-mentioned suspension assembly according to the third aspect of the utility model, the actuator is fixed to one of the body and the wheel, and the other of the body and the wheel is connected to the rack.

According to the vehicle of the fourth aspect of the utility model, by providing the suspension assembly according to the third aspect of the utility model, active vibration reduction of the vehicle can be achieved, and the service life of the actuator is longer, thereby improving the user experience.

Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a cross-sectional view of an actuator according to an embodiment of the present utility model;

FIG2 is a cross-sectional view of the actuator shown in FIG1 from another angle;

FIG3 is a cross-sectional view of the guide portion and the guide member shown in FIG2;

FIG4 is a cross-sectional view of the guide portion and the guide member shown in FIG3 at another angle;

FIG5 is a schematic diagram of the guide portion and the guide member shown in FIG3 from another angle;

FIG6 is a schematic diagram of the guide portion and the guide member shown in FIG3 at another angle;

FIG7 is a schematic diagram of the guide member shown in FIG6;

FIG. 8 is a schematic diagram of the speed reduction mechanism, the rack, the output gear, the first shaft, and the second shaft shown in FIG. 1 .

Reference numerals:

100. Actuator;

10. guide member; 11. guide groove; 111. oil storage hole; 112. first fixing hole; 1121. first hole section; 1122. second hole section; 12. wear-resistant layer; 13. wear-reducing layer; 14. bearing layer;

20. Rack;

30. Shell; 31. Mounting cavity; 32. Guide portion; 321. Guide hole; 3211. Positioning groove; 3212. Fixing groove; 3213. Second fixing hole; 3214. Operation hole;

40. Circlip;

50. Driving motor;

60. speed reduction mechanism; 61. first gear; 62. second gear; 63. first shaft;

70. output gear; 71. second shaft;

80. Wheel connector; 81. Shock-absorbing spring.

Detailed ways

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

The guide member 10 according to the first embodiment of the utility model is described below with reference to FIGS. 1 to 8 .

As shown in Figures 2, 3, 6 and 7, the guide member 10 according to the embodiment of the first aspect of the utility model is used for the actuator 100, the actuator 100 includes a rack 20, the guide member 10 defines a guide groove 11, the inner wall surface of the guide groove 11 is formed as an arc cylinder, and the guide groove 11 is used to guide the axial movement of the rack 20 along the inner wall surface of the guide groove 11.

When the guide member 10 is assembled to the vehicle, the axial direction of the inner wall of the guide groove 11 is in the up-down direction. During the operation of the actuator 100, the output gear 70 and the inner wall of the guide groove 11 limit the horizontal movement of the rack 20 on both sides of the thickness direction of the rack 20. In this way, driven by the output gear 70, the rack 20 can move up and down, thereby applying a force between the vehicle body and the wheel to adjust the distance between the vehicle body and the wheel, thereby realizing the active vibration reduction function of the vehicle, and the guide member 10 can guide the rack 20 to improve the stability of the rack 20 during movement, thereby improving the working stability of the actuator 100.

It is understandable that during the driving of the vehicle, the rack 20 will shake with the vehicle body, and when the vehicle body tilts, the vehicle body or the wheels may drive the rack 20 to move in the horizontal direction. In the process of the output gear 70 driving the rack 20 to move up and down, the rack 20 may be displaced in the horizontal direction. For example, when the output gear 70 and the rack 20 are matched through the helical teeth, the output gear 70 will generate a horizontal force on the rack 20, causing the rack 20 to be displaced in the horizontal direction.

In this embodiment, by setting the inner wall surface of the guide groove 11 to a circular arc cylindrical surface, the guide groove 11 will have an opening. During the movement of the rack 20, the opening can provide a side of the rack 20 with teeth to avoid knocking or rubbing between the teeth on the rack 20 and the inner wall surface of the guide groove 11, thereby improving the service life of the rack 20. At the same time, when the rack 20 is relatively displaced with the inner wall surface of the guide groove 11 in the horizontal direction, the circular arc cylindrical surface can make the rack 20 slide more smoothly in the guide groove 11, reduce the wear of the inner wall surface of the guide groove 11 on the mating surface of the rack 20, and further improve the service life of the rack 20.

According to the guide member 10 of the embodiment of the first aspect of the utility model, the rack 20 in the actuator 100 can be guided, thereby improving the working stability of the actuator 100, and the guide groove 11 whose inner wall surface is an arc cylinder has an opening. During the movement of the rack 20, the opening can provide avoidance for the side of the rack 20 with teeth, and the teeth on the rack 20 will not contact the inner wall surface of the guide groove 11, thereby improving the service life of the rack 20.

In some embodiments of the present invention, the center angle corresponding to the arc cylinder is not less than 20°; and/or the center angle corresponding to the arc cylinder is not greater than 180°.

That is to say, the central angle corresponding to the arc cylinder may be not less than 20°. For example, the central angle corresponding to the arc cylinder may be 20°, 30° or 45°.

The central angle corresponding to the arc cylinder may also be no greater than 180°. For example, the central angle corresponding to the arc cylinder may be 120°, 150° or 180°.

The central angle corresponding to the arc cylinder may also be not less than 20° and not greater than 180°. For example, the central angle corresponding to the arc cylinder may be 20°, 30°, 45°, 90°, 120°, 150° or 180°.

Thus, it can be ensured that the rack 20 will not fall out of the guide groove 11 within the normal moving path of the rack 20, and the teeth of the rack 20 will not contact the inner wall of the guide groove 11. In the process of product design, the central angle corresponding to the arc cylinder can be adjusted to meet more product design needs and reduce the difficulty of product design.

In some embodiments of the present invention, as shown in FIG7 , the guide member 10 is an arc-shaped plate structure extending along an arc line, and the radial inner surface of the guide member 10 encloses a guide groove 11. Thus, the structure of the guide member 10 is relatively simple, which can reduce the difficulty of producing the guide member 10 and the difficulty of assembling the guide member 10 on the actuator 100, thereby reducing the production cost.

In some embodiments of the present invention, as shown in Figure 7, the guide member 10 includes: a wear-resistant layer 12, a friction-reducing layer 13 and a bearing layer 14, and the wear-resistant layer 12, the friction-reducing layer 13 and the bearing layer 14 are arranged in sequence from the inside to the outside along the radial direction of the guide groove 11, and the hardness of the friction-reducing layer 13 is less than that of the bearing layer 14. During the operation of the actuator 100, the rack 20 will generate friction with the inner wall of the guide groove 11. By setting the wear-resistant layer 12, the wear degree of the rack 20 on the inner wall of the guide groove 11 can be reduced, thereby improving the service life of the guide member 10; by setting the wear-reducing layer 13, the hardness of the wear-reducing layer 13 is relatively low. When the force on the wear-resistant layer 12 is transmitted to the wear-reducing layer 13, the wear degree of the wear-resistant layer 12 by the wear-reducing layer 13 can be reduced, thereby further improving the service life of the guide member 10; by setting the bearing layer 14, the hardness and strength of the bearing layer 14 are relatively high. After the guide member 10 is installed, a greater force can be applied to the connection between the guide member 10 and the actuator 100, thereby making the connection between the guide member 10 and the actuator 100 more reliable.

In some embodiments of the present invention, the friction-reducing layer 13 is a copper powder layer, and/or the bearing layer 14 is a steel plate layer. The copper powder layer has a relatively low hardness, which can meet the requirement that the friction-reducing layer 13 reduces the wear of the wear-resistant layer 12, and the steel plate layer has a relatively high hardness and strength, which can meet the installation requirements of the guide member 10 on the actuator 100.

In some embodiments of the present invention, as shown in FIG4, FIG6 and FIG7, at least one oil storage hole 111 is formed on the inner wall of the guide groove 11. For example, the number of the oil storage holes 111 may be one, two or ten. It is understood that during the operation of the actuator 100, the transmission connection requires lubricating oil for lubrication and cooling. By providing the oil storage holes 111, the oil storage holes 111 can contain lubricating oil. In this way, when the rack 20 moves at the oil storage holes 111, the lubricating oil can adhere to the rack 20, thereby improving the lubrication and cooling effect on the rack 20 and the output gear 70.

In some embodiments of the present invention, as shown in Figures 3, 4, 6 and 7, the inner wall of the guide groove 11 is formed with at least one first fixing hole 112 for inserting a fastener, and the first fixing hole 112 penetrates the inner wall of the guide groove 11 along the thickness direction. In this way, the fixing method of the guide member 10 is relatively simple, and the fastener passes through the first fixing hole 112 to fix the guide member 10, which can make the reliability of the fixing point of the guide member 10 higher.

The first fixing hole 112 includes: a first hole section 1121 and a second hole section 1122 connected in sequence along the length direction of the first fixing hole 112, the first hole section 1121 is connected to one end of the second hole section 1122 facing the guide groove 11, and the inner diameter of the first hole section 1121 is greater than the inner diameter of the second hole section 1122. In this way, after the fastener passes through the first fixing hole 112, the smaller section of the fastener is placed in the second hole section 1122, and the larger section of the fastener is placed in the first hole section 1121. The edge of the first hole section 1121 close to the second hole section 1122 can hold the fastener against the fastener, so that the fastener fixes the guide member 10, and the second hole section 1122 can provide a receiving space for the larger end of the fastener, so that the fastener will not extend into the guide groove 11 and contact the rack 20. For example, when the fastener is a fastening bolt, the head of the fastening bolt is placed in the first hole section 1121, and the stud of the fastening bolt is placed in the second hole section 1122.

The actuator 100 according to the second embodiment of the utility model is described below with reference to FIGS. 1 to 8 .

According to the actuator 100 of the second aspect embodiment of the utility model, the actuator 100 is connected between the vehicle body and the wheel, as shown in Figures 1 and 2, and includes: the guide member 10 and the rack 20 according to the first aspect embodiment of the utility model, and the rack 20 is movably arranged in the guide groove 11 up and down.

Specifically, the rack 20 extends in the up-down direction, and the guide groove 11 extends in the up-down direction. During the operation of the actuator 100, the rack 20 moves up and down in the guide groove 11, thereby applying a force between the vehicle body and the wheel in the up-down direction, thereby adjusting the distance between the vehicle body and the wheel, and further realizing the active vibration reduction function of the actuator 100.

The service life of the rack 20 is relatively long, and thus the service life of the actuator 100 is also relatively long.

According to the actuator 100 of the second embodiment of the utility model, by providing the guide member 10 according to the first embodiment of the utility model, the working stability and service life of the actuator 100 can be improved.

In some embodiments of the utility model, the rack 20 has an arc-shaped mating surface, which cooperates with the inner wall of the guide groove 11. In this way, the contact area between the mating surface and the inner wall of the guide groove 11 can be increased. During the movement of the rack 20, the guiding effect of the guide member 10 on the rack 20 can be improved, and when the rack 20 produces a horizontal displacement relative to the inner wall of the guide groove 11, the mating surface slides more smoothly on the inner wall of the guide groove 11, which can further reduce the wear of the inner wall of the guide groove 11 on the mating surface, thereby further improving the service life of the rack 20.

The rack 20 is provided with a plurality of helical teeth arranged in sequence along the length direction of the rack 20, and the ratio of the central angle corresponding to the arc cylinder to the helical angle of the helical teeth is greater than or equal to 6. For example, the ratio of the central angle corresponding to the arc cylinder to the helical angle of the helical teeth can be 6, 6.2, 6.5, 7 or 9. Thus, it can be ensured that the rack 20 will not fall out of the guide groove 11 within the normal moving path of the rack 20. In the process of product design, the ratio of the central angle corresponding to the arc cylinder to the helical angle of the helical teeth can be adjusted to meet more product design needs and reduce the difficulty of product design.

In some embodiments of the present invention, as shown in Figures 1 and 2, the actuator 100 also includes: a shell 30, a mounting cavity 31 is defined in the shell 30, the rack 20 is disposed in the mounting cavity 31, a guide hole 321 is provided on the shell 30, the guide hole 321 is connected to the mounting cavity 31, the guide member 10 is fixed to the inner wall of the guide hole 321, and the lower end of the rack 20 extends out of the mounting cavity 31 through the guide hole 321. Among them, preferably, the shell 30 is fixed to the vehicle body, and the rack 20 is connected to the wheel. By setting the shell 30, the shell 30 can provide protection for components such as the rack 20, reduce the probability that components such as the rack 20 are disturbed and damaged by the external environment, and the shell 30 can improve the integration of the actuator 100, and reduce the difficulty of assembly and product design. By setting the guide hole 321, the guide hole 321 can provide an avoidance space for the rack 20, so that the rack 20 can be connected to the wheel, and the rack 20 can move up and down relative to the shell 30, thereby realizing the active vibration reduction function. In addition, the guide hole 321 can also provide guidance and limitation for the movement of the rack 20.

In some embodiments of the utility model, as shown in FIGS. 1 to 4 , a guide portion 32 extending downward is provided on the lower surface of the housing 30, and the guide portion 32 defines a guide hole 321 that passes through the guide portion 32 vertically, and the guide member 10 is provided on the inner wall at the lower portion of the guide hole 321. In this way, the length of the guide hole 321 in the vertical direction is longer, thereby improving the guiding and limiting effect of the guide hole 321 on the rack 20, and the inner wall thickness of the guide hole 321 can be made thicker, thereby improving the supporting strength of the inner wall of the guide hole 321. When the rack 20 moves in the guide hole 321, the guide member 10 provides guidance and limiting for the rack 20 at the lower portion of the guide hole 321. In the process of product design, the size of the guide portion 32 can be adjusted to meet more product design needs.

In some embodiments of the present invention, as shown in FIG4 , a positioning groove 3211 is formed on the inner wall of the guide hole 321, and the guide member 10 is fitted into the positioning groove 3211. By providing the positioning groove 3211, the guide member 10 can be quickly positioned during the assembly process, thereby improving the assembly efficiency and the assembly accuracy. In addition, the inner wall of the positioning groove 3211 can limit the displacement of the guide member 10, thereby improving the reliability and stability of the guide member 10 after being installed in the guide hole 321.

In some embodiments of the present invention, as shown in FIG. 6 , the lower end of the positioning groove 3211 passes through the lower end surface of the guide portion 32, so that during the assembly process, the guide member 10 can be extended from the guide hole 321 into the positioning groove 3211 below the guide portion 32, and the operation difficulty is relatively low.

The actuator 100 further includes a retaining spring 40, which is fixed to the inner wall of the guide hole 321 and disposed on the lower side of the guide member 10, and the retaining spring 40 abuts against the lower surface of the guide member 10. Thus, the retaining spring 40 can apply an upward force to the lower surface of the guide member 10, so that the guide member 10 can be fixed in the positioning groove 3211.

In some embodiments of the present invention, as shown in FIG4 and FIG6, a fixing groove 3212 is formed on the inner wall of the guide hole 321, the fixing groove 3212 is arranged below the guide member 10, the fixing groove 3212 extends in a ring shape along the circumference of the guide hole 321, and the clamping spring 40 is fixed in the fixing groove 3212. In this way, during the assembly process, the clamping spring 40 can be quickly positioned, and the operation of assembling the clamping spring 40 into the fixing groove 3212 is relatively simple, thereby improving the assembly efficiency and the assembly accuracy.

In some embodiments of the present invention, as shown in FIG3 and FIG6, a first fixing hole 112 is formed on the guide member 10, a second fixing hole 3213 is formed on the inner wall of the guide hole 321, and the guide member 10 is fixed to the housing 30 by fasteners passing through the first fixing hole 112 and the second fixing hole 3213. The fastener connection has high reliability and is easy to operate, thereby improving the reliability of the connection between the guide member 10 and the inner wall of the guide hole 321 and improving production efficiency.

In some embodiments of the present invention, as shown in FIGS. 4 to 6, the inner wall of the guide hole 321 is further formed with an operation hole 3214 that penetrates the inner wall of the guide hole 321 in the thickness direction, and the operation hole 3214 and the second fixing hole 3213 are respectively arranged on opposite sides of the radial direction of the guide hole 321. It can be understood that a large assembly space is required to pass the fastener through the first fixing hole 112 and the second fixing hole 3213 and connect the guide member 10 to the inner wall of the guide hole 321. By providing the operation hole 3214, the operation hole 3214 can provide an operation space for the operator to assemble the fastener, thereby realizing the connection of the guide member 10 to the inner wall of the guide hole 321 and improving the production efficiency.

Preferably, the second fixing hole 3213 is formed on the bottom wall of the positioning groove 3211, and the fastener is a fastening bolt. In this way, during the assembly process, the guide member 10 is first extended from the guide hole 321 into the positioning groove 3211, and then the retaining spring 40 is fixed in the fixing groove 3212 and the retaining spring 40 is abutted against the lower surface of the guide member 10. Subsequently, the operator passes the fastening bolt through the first fixing hole 112 and the second fixing hole 3213 through the operating hole 3214 and tightens it, thereby realizing the assembly of the guide member 10 in the guide hole 321.

Among them, the guide member 10 is first fixed in the guide groove 11 by the retaining spring 40, so that the guide member 10 can be quickly positioned, and it can be convenient to pass the fastening bolts through the first fixing hole 112 and the second fixing hole 3213, thereby improving the assembly efficiency and assembly accuracy. The fastening bolts pass through the first fixing hole 112 and the second fixing hole 3213 to fix the guide member 10, which can improve the connection accuracy between the guide member 10 and the inner wall of the guide hole 321.

In some embodiments of the present invention, as shown in FIG. 1 , FIG. 2 and FIG. 8 , the actuator 100 further includes: a driving motor 50 , a speed reduction mechanism 60 and an output gear 70 .

Specifically, the drive motor 50 is connected to the output gear 70 through the reduction mechanism 60 to drive the output gear 70 to rotate. The output gear 70 is meshed with the rack 20 to drive the rack 20 to move up and down. The reduction mechanism 60 and the drive motor 50 are arranged on both sides of the rack 20 in the width direction.

During vehicle driving, when the body posture needs to be adjusted, the drive motor 50 drives the drive rack 20 to move up and down through the reduction mechanism 60 and the output gear 70. The drive rack 20 pushes the wheels and the body to move relative to each other in the up and down directions, and adjusts the distance between the wheels and the body, thereby adjusting the body posture, that is, realizing active vibration reduction of the vehicle.

The drive motor 50 responds quickly, and the output gear 70 and the rack 20 are directly transmitted, thereby improving the response speed of the actuator 100, thereby reducing the time required for body posture adjustment and improving the driving experience of the occupants. The output gear 70 and the rack 20 have a simple structure and are easy to process during the production process.

The reduction mechanism 60 can reduce the speed and increase the torque of the drive motor 50. When the output torque of the output gear 70 meets the use requirements, the power of the drive motor 50 can be reduced. It can be understood that the smaller the power of the drive motor 50, the smaller the size of the drive motor 50. In this way, the size of the drive motor 50 in the actuator 100 can be reduced, thereby facilitating the arrangement of the actuator 100 on the vehicle.

On the actuator 100, the weight of the drive motor 50 and the reduction mechanism 60 accounts for a relatively large proportion. By respectively arranging the reduction mechanism 60 and the drive motor 50 on both sides of the rack 20 in the width direction, the reduction mechanism 60 and the drive motor 50 are more symmetrical, which can improve the symmetry of the gravity distribution of the actuator 100 on both sides of the rack 20. In this way, when the vehicle body drives the actuator 100 to shake, the gravity of the actuator 100 on both sides of the rack 20 generates a greater degree of torque offset at the connection between the actuator 100 and the vehicle. Therefore, the probability of the actuator 100 detaching from the vehicle can be reduced, thereby improving the reliability of the vehicle during operation.

In some embodiments of the present invention, the output gear 70 is a helical gear, and the rack 20 is provided with a plurality of helical teeth adapted to the output gear 70. The helical gear meshing transmission process is smoother, and the helix angle of the helical gear is smaller, which can reduce the force acting on the axial direction of the output gear 70 at the meshing point between the output gear 70 and the rack 20, thereby reducing the noise during the operation of the vehicle and increasing the service life of the output gear 70 and the rack 20.

In some embodiments of the present utility model, as shown in FIG. 1 and FIG. 8 , the speed reduction mechanism 60 includes: a first gear 61 and a second gear 62. The driving motor 50 is connected to the first gear 61, the second gear 62 is meshed with the first gear 61, the diameter of the second gear 62 is larger than the diameter of the first gear 61, and the second gear 62 is connected to the output gear 70. Thus, the speed reduction transmission of the speed reduction mechanism 60 can be realized, and the sizes of the first gear 61 and the second gear 62 can be adjusted during the product design process, so that the speed reduction mechanism 60 meets more product design requirements and reduces the difficulty of product design.

In some embodiments of the present invention, both the first gear 61 and the second gear 62 are helical gears. The helical gear meshing transmission process is smoother, and the helical angle of the helical gear is smaller, which can reduce the force acting on the axial direction of the first gear 61 at the meshing point of the first gear 61 and the second gear 62, thereby reducing the noise during the operation of the vehicle and increasing the service life of the output gear 70 and the rack 20.

In some embodiments of the present invention, as shown in Figures 1 and 2, the actuator 100 also includes: a wheel connector 80 and a shock-absorbing spring 81, the wheel connector 80 is connected between the lower end of the rack 20 and the wheel, and the shock-absorbing spring 81 abuts between the wheel connector 80 and the housing 30, wherein the wheel connector 80 can reduce the difficulty of connecting the rack 20 with the wheel, and the shock-absorbing spring 81 can absorb part of the impact on the wheel, thereby improving the stability of the vehicle body during driving.

In some embodiments of the utility model, as shown in FIG. 1 , FIG. 2 and FIG. 8 , the actuator 100 further includes: a first shaft 63 and a second shaft 71. The first shaft 63 extends along the width direction of the rack 20 and both ends extend to both sides of the rack 20, one end of the first shaft 63 is connected to the drive motor 50, the first gear 61 is fixed to the other end of the first shaft 63, the second shaft 71 extends along the width direction of the rack 20, and the second gear 62 and the output gear 70 are both sleeved and fixed on the second shaft 71. In this way, the length of the first shaft 63 and the second shaft 71 can be made shorter, thereby reducing the size of the actuator 100, facilitating the arrangement of the actuator 100 on the vehicle, and facilitating the lightweighting of the vehicle. In addition, the gravity distribution of the first shaft 63 and the second shaft 71 on the actuator 100 is relatively uniform, thereby further improving the reliability of the vehicle during operation.

The suspension assembly according to the embodiment of the third aspect of the utility model includes: the actuator according to the embodiment of the second aspect of the utility model.

According to the suspension assembly of the third embodiment of the utility model, active vibration reduction of the vehicle can be achieved by providing the actuator according to the second embodiment of the utility model.

The vehicle according to the fourth embodiment of the utility model comprises: a body, wheels and the suspension assembly according to the third embodiment of the utility model. The actuator 100 is fixed to one of the body and the wheel, and the other of the body and the wheel is connected to the rack 20.

Among them, preferably, the actuator 100 is fixed on the vehicle body, and the rack 20 is connected to the wheel. During the operation of the vehicle, the rack 20 pushes the vehicle body and the wheel to move relative to each other according to the change of the distance between the vehicle body and the wheel to adjust the posture of the vehicle body, thereby realizing active vibration reduction of the vehicle.

According to the vehicle of the fourth aspect embodiment of the utility model, by providing the suspension assembly according to the third aspect embodiment of the utility model, active vibration reduction of the vehicle can be achieved, and the service life of the actuator is longer, thereby improving the user experience.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims (19)

1. A guide member for an actuator, wherein the actuator includes a rack, wherein the guide member defines a guide groove, the inner wall surface of the guide groove is formed as an arc cylinder, and the guide groove is used to guide the axial movement of the rack along the inner wall surface of the guide groove. 2. The guide member according to claim 1 is characterized in that the central angle corresponding to the arc cylinder is not less than 20°; and/or the central angle corresponding to the arc cylinder is not greater than 180°. 3. The guide member according to claim 1 is characterized in that the guide member is an arc-shaped plate structure extending along an arc line, and the radial inner surface of the guide member encloses the guide groove. 4. The guide member according to claim 3 is characterized in that the guide member comprises: a wear-resistant layer, a friction-reducing layer and a bearing layer, the wear-resistant layer, the friction-reducing layer and the bearing layer are arranged in sequence from inside to outside along the radial direction of the guide groove, and the hardness of the friction-reducing layer is smaller than that of the bearing layer. 5. The guide member according to claim 4, characterized in that the wear-reducing layer is a copper powder layer, and/or the bearing layer is a steel plate layer. 6. The guide member according to claim 1, characterized in that at least one oil storage hole is formed on the inner wall of the guide groove. 7. The guide member according to claim 1, characterized in that the inner wall of the guide groove is formed with at least one first fixing hole for inserting a fastener, and the first fixing hole penetrates the inner wall of the guide groove along the thickness direction; The first fixing hole includes: a first hole segment and a second hole segment connected in sequence along the length direction of the first fixing hole, the first hole segment is connected to one end of the second hole segment facing the guide groove, and the inner diameter of the first hole segment is greater than the inner diameter of the second hole segment. 8. An actuator connected between a vehicle body and a wheel, characterized in that it comprises: The guide member according to any one of claims 1 to 7; A rack is movably arranged in the guide groove up and down. 9. The actuator according to claim 8, characterized in that the rack has an arc-shaped mating surface, and the mating surface is matched with the inner wall of the guide groove. The rack is provided with a plurality of oblique teeth arranged in sequence along the length direction of the rack, and the ratio of the central angle corresponding to the arc cylinder to the helix angle of the oblique teeth is greater than or equal to 6. 10. The actuator according to claim 8 is characterized in that it also includes: a shell, a mounting cavity is defined in the shell, the rack is arranged in the mounting cavity, a guide hole is provided on the shell, the guide hole is connected to the mounting cavity, the guide member is fixed to the inner wall of the guide hole, and the lower end of the rack passes through the guide hole and extends out of the mounting cavity. 11. The actuator according to claim 10 is characterized in that a guide portion extending downward is provided on the lower surface of the shell, the guide portion defines the guide hole penetrating the guide portion up and down, and the guide member is provided on the inner wall of the lower part of the guide hole. 12 . The actuator according to claim 11 , wherein a positioning groove is formed on the inner wall of the guide hole, and the guide member is fitted in the positioning groove. 13. The actuator according to claim 12, characterized in that the lower end of the positioning groove passes through the lower end surface of the guide portion, The actuator further includes a retaining spring, which is fixed on the inner wall of the guide hole and arranged on the lower side of the guide member, and the retaining spring abuts against the lower surface of the guide member. 14. The actuator according to claim 13 is characterized in that a fixing groove is formed on the inner wall of the guide hole, the fixing groove is arranged below the guide member, the fixing groove extends in a ring shape along the circumference of the guide hole, and the retaining ring is fixed in the fixing groove. 15. The actuator according to claim 10, characterized in that a first fixing hole is formed on the guide member, a second fixing hole is formed on an inner wall of the guide hole, and the guide member is fixed to the housing by fasteners passing through the first fixing hole and the second fixing hole. 16. The actuator according to claim 15, characterized in that an operating hole is further formed on the inner wall of the guide hole and penetrates the inner wall of the guide hole along the thickness direction, and the operating hole and the second fixing hole are respectively arranged on opposite sides of the guide hole in the radial direction. 17. The actuator according to claim 8, further comprising: motor; A reduction mechanism and an output gear, wherein the drive motor is connected to the output gear through the reduction mechanism to drive the output gear to rotate, the output gear is meshed with the rack to drive the rack to move up and down, and the reduction mechanism and the drive motor are arranged on both sides of the rack in the width direction. 18. A suspension assembly, characterized by comprising: the actuator according to any one of claims 8 to 17. 19. A vehicle, comprising: body and wheels; In the suspension assembly of claim 18, the actuator is fixed to one of the vehicle body and the wheel, and the other of the vehicle body and the wheel is connected to the rack.