Vehicle suspension and vehicle with same

Abstract

The invention discloses a vehicle suspension and a vehicle with the vehicle suspension, and the vehicle suspension comprises a steel plate spring suitable for being connected with a vehicle frame; the wheel end mounting seat is mounted on the steel plate spring and provided with a wheel end mounting hole, and the wheel end mounting hole is suitable for being connected with a wheel end structure; the air spring is connected with the wheel end mounting seat, and the air spring is suitable for being connected with the frame; wherein in a plane perpendicular to the central axis of the wheel end mounting hole, the orthographic projection of the central axis of the air spring obliquely intersects at an intersection point relative to the orthographic projection of the plumb line of the central axis of the wheel end mounting hole, and the intersection point is located below the wheel end mounting hole. The vehicle suspension has the advantages of being high in comfort and safety and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle suspension and a vehicle having the same. Background Art

[0002] The vehicle suspension in the related art is usually mainly based on leaf springs, which are then installed on a rigid bridge to connect to the frame, resulting in a large unsprung mass and high energy consumption. Therefore, some vehicle suspensions use a combination of leaf springs and air springs, but there is still room for optimization in the layout of leaf springs and air springs, and the comfort of the vehicle needs to be improved. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a vehicle suspension having advantages of high comfort and safety.

[0004] The present invention also provides a vehicle having the vehicle suspension.

[0005] In order to achieve the above-mentioned purpose, a vehicle suspension is proposed according to a first aspect of the present invention, comprising: a leaf spring, wherein the leaf spring is suitable for being connected to a vehicle frame; a wheel-end mounting seat, wherein the wheel-end mounting seat is mounted on the leaf spring and is provided with a wheel-end mounting hole, wherein the wheel-end mounting hole is suitable for being connected to a wheel-end structure; an air spring, wherein the air spring is connected to the wheel-end mounting seat, and wherein the air spring is suitable for being connected to the vehicle frame; wherein, in a plane perpendicular to the central axis of the wheel-end mounting hole, an orthographic projection of the central axis of the air spring intersects obliquely at an intersection relative to an orthographic projection of a perpendicular line of the central axis of the wheel-end mounting hole, and the intersection is located below the wheel-end mounting hole.

[0006] According to the vehicle suspension of the embodiment of the present invention, the leaf spring and the air spring can jointly reduce vibration between the frame and the wheel end structure. The air spring takes stiffness (load effect) as the main function and guide effect as the auxiliary function, while the leaf spring takes stiffness (load effect) as the auxiliary function and guide effect as the main function. The two cooperate with each other, and the comfort of the vehicle using the vehicle suspension of the embodiment of the present invention is greatly improved. Moreover, when the vehicle suspension moves, the displacement of the lower end of the air spring in the front and rear directions of the vehicle and the displacement of the rear mounting point of the leaf spring in the front and rear directions of the vehicle maintain a relative difference, which can increase the life of the air spring, control the linear change of the wheelbase, and greatly improve the comfort of the vehicle using the vehicle suspension of the embodiment of the present invention. In addition, the intersection m is located below the wheel end mounting hole, so that the air spring can generate a force to offset the above-mentioned torsional force to increase the comfort and safety of the vehicle.

[0007] According to some embodiments of the present invention, a perpendicular line of the central axis of the wheel end mounting hole has a grounding point intersecting the ground, and a vertical height difference between the intersection point and the grounding point is no more than 10 mm.

[0008] According to some embodiments of the present invention, in a plane perpendicular to the central axis of the wheel end mounting hole, the orthographic projection of the ground contact point coincides with the intersection point.

[0009] According to some embodiments of the present invention, both ends of the leaf spring are respectively suitable for connection with the vehicle frame; the midpoint of the line connecting the two ends of the leaf spring and the center of the wheel end mounting hole are staggered along the front-rear direction of the vehicle.

[0010] According to some embodiments of the present invention, the center of the wheel end mounting hole is located behind the midpoint of a line connecting two ends of the leaf spring.

[0011] According to some embodiments of the present invention, a connection point between the air spring and the wheel end mounting seat is staggered with a center of the wheel end mounting hole along a front-rear direction of the vehicle.

[0012] According to some embodiments of the present invention, a connection point between the air spring and the wheel end mounting seat is located in front of a central axis of the wheel end mounting hole.

[0013] According to some embodiments of the present invention, the number of the air spring is one and the air spring is located in front of or behind the central axis of the wheel end mounting hole.

[0014] According to some embodiments of the present invention, there are multiple air springs, wherein the multiple air springs are all located in front of the central axis of the wheel end mounting hole; or the multiple air springs are all located behind the central axis of the wheel end mounting hole; or the multiple air springs are respectively located in front of and behind the central axis of the wheel end mounting hole.

[0015] According to some embodiments of the present invention, the wheel-end mounting seat includes: a main body, which is mounted on the leaf spring and the air spring is connected to the main body; a wheel-end mounting portion, which is connected to the main body and extends forward or backward from the wheel-end mounting portion, and the wheel-end mounting hole is constructed on the wheel-end mounting portion, and the wheel-end mounting hole and the main body are staggered in the front and rear directions of the vehicle.

[0016] According to some embodiments of the present invention, in the left-right direction of the vehicle, the wheel end mounting portion is located on the outside of the leaf spring.

[0017] According to some embodiments of the present invention, there are at least two leaf springs arranged at intervals along the left-right direction of the vehicle, and each leaf spring is installed and connected to a wheel end mounting seat of the air spring; wherein two adjacent wheel end mounting seats are connected by an elastic torsion bar.

[0018] According to some embodiments of the present invention, in the front-rear direction of the vehicle, the distance between the connection point between the air spring and the wheel end mounting seat and the elastic torsion bar is smaller than the distance between the central axis of the wheel end mounting hole and the elastic torsion bar.

[0019] According to some embodiments of the present invention, the vehicle suspension further comprises: a shock absorber, the shock absorber being mounted on the wheel end mounting seat, the shock absorber and the wheel end mounting hole being staggered in the front-rear direction of the vehicle.

[0020] According to some embodiments of the present invention, the wheel end mounting seat has a shock absorber mounting portion, the shock absorber mounting portion is located below the leaf spring, and the shock absorber is connected to the shock absorber mounting portion.

[0021] According to a second aspect of the present invention, a vehicle is provided, comprising: a vehicle frame and a wheel end structure; and a vehicle suspension according to the first aspect of the present invention.

[0022] The vehicle according to the second embodiment of the present invention has advantages of high comfort and safety by utilizing the vehicle suspension according to the first embodiment of the present invention.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic structural diagram of a vehicle suspension according to an embodiment of the present invention.

[0026] Figure 2 2 is a schematic structural diagram of a vehicle suspension according to an embodiment of the present invention from another perspective.

[0027] Figure 3 3 is a structural schematic diagram of a vehicle suspension according to an embodiment of the present invention from another perspective.

[0028] Reference numerals:

[0029] Vehicle Suspension 1.

[0030] Leaf spring 100, first mounting seat 110, lifting lug 120, second mounting seat 130,

[0031] The wheel end mounting seat 200 , the wheel end mounting hole 201 , the main body 210 , the wheel end mounting portion 220 , the shock absorber mounting portion 230 , the air spring 300 , and the elastic torsion bar 400 . DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0033] In the description of the present invention, it is to 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”, “axis”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In the description of the present invention, "plurality" means two or more.

[0035] A vehicle suspension 1 according to an embodiment of the present invention will be described below with reference to the drawings.

[0036] like Figure 1-Figure 3 As shown, the vehicle suspension 1 according to the embodiment of the present invention includes a leaf spring 100 , a wheel end mounting seat 200 and an air spring 300 .

[0037] The leaf spring 100 is suitable for connecting with the vehicle frame, the wheel end mounting seat 200 is mounted on the leaf spring 100 and is provided with a wheel end mounting hole 201, the wheel end mounting hole 201 is suitable for connecting with the wheel end structure, the air spring 300 is connected with the wheel end mounting seat 200, and the air spring 300 is suitable for connecting with the vehicle frame. In the plane perpendicular to the central axis of the wheel end mounting hole 201, the orthographic projection of the central axis L1 of the air spring 300 intersects obliquely with the orthographic projection of the vertical line L2 of the central axis of the wheel end mounting hole 201 at the intersection m, and the intersection m is located below the wheel end mounting hole 201. In the plane perpendicular to the central axis of the wheel end mounting hole 201, the vertical line refers to the line connecting the center of gravity of the object and the center of gravity of the earth.

[0038] For example, the wheel end mounting seat 200 and the leaf spring 100 are connected by a U-shaped bolt, and the air spring 300 and the wheel end mounting seat 200 are connected by a bolt thread.

[0039] According to the vehicle suspension 1 of the embodiment of the present invention, the leaf spring 100 is connected to the frame, the wheel-end mounting seat 200 is installed on the leaf spring 100 and is provided with a wheel-end mounting hole 201, the wheel-end mounting hole 201 is connected to the wheel-end structure, the air spring 300 is connected to the wheel-end mounting seat 200, and the air spring 300 is connected to the frame.

[0040] In this way, the leaf spring 100 plays the role of fixing the positions of the vehicle frame, the wheel end structure and the air spring 300. The vibration force of the wheel end structure is transmitted to the vehicle frame through the leaf spring 100 and the air spring 300. The leaf spring 100 and the air spring 300 can jointly reduce vibration between the vehicle frame and the wheel end structure. The air spring 300 takes stiffness (load action) as the main body 210 and guide action as the auxiliary, and the leaf spring 100 takes stiffness (load action) as the auxiliary and guide action as the main body 210. The two cooperate with each other, and the comfort of the vehicle using the vehicle suspension 1 of the embodiment of the present invention is greatly improved. In addition, increasing the installation points of the leaf spring 100 and the air spring 300 makes the overall structure simpler and the unsprung mass is greatly reduced.

[0041] In addition, in a plane perpendicular to the central axis of the wheel-end mounting hole 201, the orthographic projection of the central axis L1 of the air spring 300 intersects obliquely with the orthographic projection of the perpendicular line L2 of the central axis of the wheel-end mounting hole 201 at an intersection m, and the intersection m is located below the wheel-end mounting hole 201.

[0042] In this way, the air spring 300 and the wheel-end mounting hole 201 are staggered in the front-rear direction of the vehicle. When the vehicle suspension 1 moves, the displacement of the lower end of the air spring 300 in the front-rear direction of the vehicle and the displacement of the rear mounting point of the leaf spring 100 in the front-rear direction of the vehicle maintain a relative difference. This difference can increase the service life of the air spring 300, control the linear change of the wheelbase, and greatly improve the comfort of the vehicle using the vehicle suspension 1 of the embodiment of the present invention.

[0043] In addition, if Figure 1As shown, the wheel end structure is subjected to road feedback and excitation, forming a compressive force that drives the vehicle suspension 1 to move upward. The force is transmitted from the wheel end structure to the wheel end mounting seat 200, and the wheel end mounting seat 200 transmits the compressive force to the air spring 300 and the leaf spring 100. The air spring 300 and the leaf spring 100 form elastic deformation. The compressive force is decomposed into three components, which are transmitted to the connection point of the leaf spring 100 with the vehicle and the connection point of the air spring 300 with the wheel end mounting seat 200 respectively. The leaf spring 100 generates an upward force at the front mounting point, and The rear mounting point has a downward force, so that the leaf spring 100 has a torsional force. Since the air spring 300 and the wheel-end mounting hole 201 are staggered in the front-to-rear direction of the vehicle, the orthographic projection of the central axis L1 of the air spring 300 and the orthographic projection of the perpendicular line L2 of the central axis of the wheel-end mounting hole 201 have an intersection in a plane perpendicular to the central axis of the wheel-end mounting hole 201, and the intersection m is located below the wheel-end mounting hole 201. In this way, the air spring 300 can generate a force to offset the above-mentioned torsional force to increase the comfort and safety of the vehicle.

[0044] As such, the vehicle suspension 1 according to the embodiment of the present invention has advantages such as high comfort and safety.

[0045] According to some specific embodiments of the present invention, the vertical line L2 of the central axis of the wheel end mounting hole 201 has a grounding point g intersecting with the ground G, and the vertical height difference x between the intersection point m and the grounding point g is not greater than 10 mm, wherein the intersection point m can be higher than the grounding point g, lower than the grounding point g, or coincide with the grounding point g as a point. In this way, the air spring 300 can more effectively offset the above-mentioned torsional force to increase the comfort and safety of the vehicle.

[0046] According to some specific embodiments of the present invention, in a plane perpendicular to the central axis of the wheel end mounting hole 201, the orthographic projection of the grounding point g coincides with the intersection point m. In this way, the air spring 300 can more effectively offset the above-mentioned torsional force to increase the comfort and safety of the vehicle.

[0047] According to some specific embodiments of the present invention, Figure 1 and Figure 2As shown, the two ends of the leaf spring 100 are respectively suitable for connection with the vehicle frame, and the midpoint of the line L3 connecting the two ends of the leaf spring 100 and the center of the wheel end mounting hole 201 are staggered along the front-to-back direction of the vehicle. In this way, since the rotation center of the lower end of the air spring 300 and the rear mounting point of the leaf spring 100 are the same, but the rotation radius of the two is different, when the vehicle suspension 1 moves, the displacement of the lower end of the air spring 300 in the front-to-back direction of the vehicle and the displacement of the rear mounting point of the leaf spring 100 in the front-to-back direction of the vehicle maintain a relative difference, and this difference can make the force of the air spring 300 balanced, increase the life of the air spring 300, control the linear change of the wheelbase, and greatly improve the comfort of the vehicle using the vehicle suspension 1 of the embodiment of the present invention.

[0048] According to some specific embodiments of the present invention, Figure 1 As shown, the center of the wheel end mounting hole 201 is located behind the midpoint of the line L3 connecting the two ends of the leaf spring 100. In this way, the air spring 300 and the half shaft connected to the wheel end structure can be misaligned in the front-rear direction of the vehicle to avoid interference between the air spring 300 and the half shaft connected to the wheel end structure.

[0049] According to some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the connection point between the air spring 300 and the wheel end mounting seat 200 is staggered with the center of the wheel end mounting hole 201 in the front-to-back direction of the vehicle. In this way, the connection point between the air spring 300 and the wheel end mounting seat 200 and the half-axle connected to the wheel end structure can be staggered in the front-to-back direction of the vehicle to avoid interference between the air spring 300 and the half-axle connected to the wheel end structure.

[0050] According to some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the connection point between the air spring 300 and the wheel end mounting seat 200 is located in front of the central axis of the wheel end mounting hole 201. In this way, while ensuring that the air spring 300 and the wheel end mounting hole 201 are misaligned in the front-rear direction of the vehicle, the layout of the frame suspension is optimized and the vibration reduction performance of the vehicle suspension 1 is improved.

[0051] According to some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the air spring 300 is one and is located in front of or behind the central axis of the wheel end mounting hole 201. In this way, the air spring 300 can be prevented from being misaligned with the half-axle connected to the wheel end structure in the front-rear direction of the vehicle, thereby preventing interference between the air spring 300 and the half-axle connected to the wheel end structure.

[0052] According to some specific embodiments of the present invention, there are multiple air springs 300, wherein the multiple air springs 300 are all located in front of the central axis of the wheel end mounting hole 201, or the multiple air springs 300 are all located behind the central axis of the wheel end mounting hole 201, or the multiple air springs 300 are respectively located in front of and behind the central axis of the wheel end mounting hole 201.

[0053] For example, in a plane perpendicular to the central axis of the wheel-end mounting hole 201, the orthographic projection of the central axis L1 of each air spring 300 and the orthographic projection of the perpendicular line L2 of the central axis of the wheel-end mounting hole 201 are relatively inclined and have an intersection, and the intersection m is located below the wheel-end mounting hole 201; or, in a plane perpendicular to the central axis of the wheel-end mounting hole 201, the orthographic projection of the central axis L1 of an air spring 300 and the orthographic projection of the perpendicular line L2 of the central axis of the wheel-end mounting hole 201 are relatively inclined and have an intersection m, and the intersection is located below the wheel-end mounting hole 201; or again, in a plane perpendicular to the central axis of the wheel-end mounting hole 201, the orthographic projection of the central axis L1 of several of the multiple air springs 300 and the orthographic projection of the perpendicular line L2 of the central axis of the wheel-end mounting hole 201 are relatively inclined and have an intersection m, and the intersection m is located below the wheel-end mounting hole 201.

[0054] In this way, the arrangement of the vehicle suspension 1 is more diverse, which is conducive to applying the vehicle suspension 1 to vehicles of different models and sizes, thereby improving the applicability of the vehicle suspension 1.

[0055] According to some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the wheel end mounting seat 200 includes a main body 210 and a wheel end mounting portion 220 .

[0056] The main body 210 is installed on the leaf spring 100, the air spring 300 is connected to the main body 210, the wheel end mounting portion 220 is connected to the main body 210 and extends forward or backward from the wheel end mounting portion 220, the wheel end mounting hole 201 is constructed on the wheel end mounting portion 220, and the wheel end mounting hole 201 and the main body 210 are staggered in the front and rear direction of the vehicle.

[0057] For example, the main body 210 and the leaf spring 100 are connected by a U-shaped bolt, and the air spring 300 and the main body 210 are connected by a bolt thread.

[0058] In this way, not only can the wheel end mounting seat 200 be connected and fixed to the air spring 300 and the wheel end structure respectively, but also the air spring 300 and the wheel end structure can be misaligned in the front-rear direction.

[0059] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, in the left-right direction of the vehicle, the wheel end mounting portion 220 is located outside the leaf spring 100. It should be noted that when the leaf spring 100 is located on the left side of the vehicle, the outside of the leaf spring 100 refers to the left side of the leaf spring 100; when the leaf spring 100 is located on the right side of the vehicle, the outside of the leaf spring 100 refers to the right side of the leaf spring 100. In this way, when the wheel end structure is installed on the wheel end mounting portion 220, it is not easy for the leaf spring 100 to interfere, which is conducive to the installation of the wheel end structure.

[0060] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, there are at least two leaf springs 100 spaced apart in the left-right direction of the vehicle, and each leaf spring 100 is mounted with a wheel end mounting seat 200 connected to an air spring 300, wherein two adjacent wheel end mounting seats 200 are connected via an elastic torsion bar 400.

[0061] For example, the cross section of the elastic torsion bar 400 may be circular or square. In addition, the portion from the connection point of the leaf spring 100 with the wheel end mounting seat 200 to the front end of the leaf spring 100, the wheel end mounting seat 200 and the elastic torsion bar 400 may be regarded as a trailing arm suspension.

[0062] By setting the elastic torsion bar 400, when the wheel on the left side of the vehicle bounces under force, the elastic torsion bar 400 can be twisted and elastically deformed, and the elastic torsion bar 400 will transmit the vibration force to the wheel on the right side of the vehicle. In this way, the elastic torsion bar 400 can play the role of a lateral stabilizer bar, and the two adjacent wheel end mounting seats 200 of the vehicle can transmit the bouncing force to each other through the elastic torsion bar 400, and the vehicle suspension 1 is a semi-independent composite suspension.

[0063] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, in the front-rear direction of the vehicle, the distance between the connection point between the air spring 300 and the wheel end mounting seat 200 and the elastic torsion bar 400 is smaller than the distance between the central axis of the wheel end mounting hole 201 and the elastic torsion bar 400. In this way, the multiple air springs 300 transmit force through the elastic torsion bar 400, and the vibration reduction effect of the vehicle suspension 1 is better, which is conducive to improving the comfort of the vehicle.

[0064] According to some specific embodiments of the present invention, the vehicle suspension 1 further includes a shock absorber (not shown in the figure), which is mounted on the wheel end mounting seat 200, and the shock absorber and the wheel end mounting hole 201 are staggered in the front and rear direction of the vehicle. In this way, the shock absorber will not interfere with the half shaft connected to the wheel end structure, and the shock absorber can reduce the vibration of the vehicle when the vehicle is driving on a bumpy road, and the vibration reduction effect is further improved. The shock absorber is mounted on the wheel end mounting seat 200, and the wheel end mounting seat 200 integrates the function of installing the shock absorber, which improves the integration, does not need to set an additional positioning structure for the shock absorber, and reduces the cost.

[0065] According to some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, the wheel end mounting seat 200 has a shock absorber mounting portion 230, the shock absorber mounting portion 230 is located below the leaf spring 100, and the shock absorber is connected to the shock absorber mounting portion 230. In this way, the shock absorber mounting portion 230 is also integrated into the wheel end mounting seat 200, and the wheel end mounting seat 200 has a higher degree of integration, which is conducive to reducing the number of parts and reducing production costs. In addition, the shock absorber mounting portion 230 is located below the leaf spring 100, which fully utilizes the space in the up and down directions of the vehicle.

[0066] According to some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the vehicle suspension 1 further includes a first mounting seat 110 , a lifting eye 120 and a second mounting seat 130 .

[0067] The first mounting seat 110 is rotatably mounted on one end of the leaf spring 100, and the first mounting seat 110 is suitable for connecting with the vehicle frame, the hanging ear 120 is rotatably mounted on the other end of the leaf spring 100, and the second mounting seat 130 is rotatably mounted on the swing arm, and the second mounting seat 130 is suitable for connecting with the vehicle frame. In the front-to-back direction of the vehicle, the central axis of the wheel end mounting hole 201 is closer to the second mounting seat 130 than the first mounting seat 110.

[0068] By providing the first mounting seat 110, the hanging ear 120 and the second mounting seat 130, the two ends of the leaf spring 100 can move and rotate relative to the frame in the front-rear direction and the up-down direction of the vehicle, which is beneficial to the deformation of the leaf spring 100. In addition, in the front-rear direction of the vehicle, the distance between the central axis of the wheel end mounting hole 201 and the first mounting seat 110 is greater than the distance between the central axis of the wheel end mounting hole 201 and the second mounting seat 130, so that the vehicle suspension 1 has a better vibration reduction effect and a higher ride comfort.

[0069] A vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The vehicle includes a vehicle frame, a wheel end structure, and a vehicle suspension 1 according to the above-mentioned embodiment of the present invention.

[0070] The vehicle according to the embodiment of the present invention has advantages of high comfort and safety by utilizing the vehicle suspension 1 according to the above-mentioned embodiment of the present invention.

[0071] Other structures and operations of the vehicle suspension 1 and the vehicle having the same according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0073] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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

1. A vehicle suspension, characterized in that: include: a leaf spring adapted to be connected to a vehicle frame; A wheel end mounting seat, the wheel end mounting seat is mounted on the leaf spring and is provided with a wheel end mounting hole, the wheel end mounting hole is suitable for connecting with the wheel end structure; an air spring, the air spring being connected to the wheel end mounting seat, the air spring being suitable for being connected to the vehicle frame; Among them, in a plane perpendicular to the central axis of the wheel end mounting hole, the orthographic projection of the central axis of the air spring intersects obliquely at an intersection relative to the orthographic projection of the perpendicular line of the central axis of the wheel end mounting hole, and the intersection is located below the wheel end mounting hole.

2. The vehicle suspension according to claim 1, characterized in that The vertical line of the central axis of the wheel end mounting hole has a grounding point intersecting the ground, and the vertical height difference between the intersection point and the grounding point is no more than 10 mm.

3. The vehicle suspension according to claim 2, characterized in that: In a plane perpendicular to the central axis of the wheel end mounting hole, the orthographic projection of the grounding point coincides with the intersection point.

4. The vehicle suspension according to claim 1, characterized in that Both ends of the leaf spring are respectively suitable for connecting to the vehicle frame; The midpoint of the line connecting the two ends of the leaf spring and the center of the wheel end mounting hole are staggered along the front-rear direction of the vehicle.

5. The vehicle suspension according to claim 4, characterized in that The center of the wheel end mounting hole is located behind the midpoint of the line connecting the two ends of the leaf spring.

6. The vehicle suspension according to claim 1, characterized in that The connection point between the air spring and the wheel end mounting seat and the center of the wheel end mounting hole are staggered along the front-rear direction of the vehicle.

7. The vehicle suspension according to claim 1, characterized in that The connection point between the air spring and the wheel end mounting seat is located forward of the central axis of the wheel end mounting hole.

8. The vehicle suspension according to claim 1, characterized in that The air spring is one and is located in front of or behind the central axis of the wheel end mounting hole.

9. The vehicle suspension according to claim 1, characterized in that: There are multiple air springs, among which: The plurality of air springs are all located in front of the central axis of the wheel end mounting hole; or The plurality of air springs are all located behind the central axis of the wheel end mounting hole; or The plurality of air springs are respectively located in front of and behind the central axis of the wheel end mounting hole.

10. The vehicle suspension according to any one of claims 1 to 9, characterized in that: The wheel end mounting seat comprises: A main body, the main body is mounted on the leaf spring, and the air spring is connected to the main body; A wheel end mounting portion is connected to the main body and extends forward or backward from the wheel end mounting portion, the wheel end mounting hole is configured in the wheel end mounting portion, and the wheel end mounting hole and the main body are staggered in the front and rear direction of the vehicle.

11. The vehicle suspension according to claim 10, characterized in that The wheel end mounting portion is located outside the leaf spring in the left-right direction of the vehicle.

12. The vehicle suspension according to any one of claims 1 to 9, characterized in that: The leaf springs are at least two and are arranged at intervals along the left-right direction of the vehicle, and each leaf spring is mounted on a wheel end mounting seat connected to the air spring; Wherein, two adjacent wheel end mounting seats are connected via an elastic torsion bar.

13. The vehicle suspension according to claim 12, characterized in that In the front-rear direction of the vehicle, the distance between the connection point between the air spring and the wheel end mounting seat and the elastic torsion bar is smaller than the distance between the central axis of the wheel end mounting hole and the elastic torsion bar.

14. The vehicle suspension according to any one of claims 1 to 9, characterized in that: Also includes: A shock absorber is mounted on the wheel end mounting seat, and the shock absorber and the wheel end mounting hole are staggered in the front-rear direction of the vehicle.

15. The vehicle suspension according to claim 14, characterized in that The wheel end mounting seat has a shock absorber mounting portion, the shock absorber mounting portion is located below the leaf spring, and the shock absorber is connected to the shock absorber mounting portion.

16. A vehicle, characterized in that: include: Frame and wheel-end structures; A vehicle suspension according to any one of claims 1 to 15.

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