Steel plate spring assembly, suspension structure and vehicle

Abstract

The utility model relates to the technical field of vehicle engineering, and provides a steel plate spring assembly, a suspension structure and a vehicle, a second installation part of the steel plate spring assembly is used for installing a steering knuckle, a first installation part is connected with a plate spring pressing plate through a second threaded fastener, and the plate spring pressing plate is connected with a chassis frame through a first threaded fastener. When threaded connection of the second threaded fastener fails or is loosened, the second threaded fastener slides downwards until the nut of the second threaded fastener abuts against the bottom wall of the storage box, the screw part of the second threaded fastener is still inserted into the first installation part and the plate body, and relative movement of the first installation part and the plate body is limited. Part of the shock absorbers in the suspension mechanism are located on the lower side of the steel plate spring, a small part of the shock absorbers exceed the steel plate spring in the height direction and are connected with the chassis frame, the space on the lower side of the steel plate spring is reasonably utilized, the installation size occupied by the vehicle with the suspension mechanism in the height direction can be reduced, and the high utilization rate of the shock absorbers is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a leaf spring assembly, a suspension structure and a vehicle. Background Art

[0002] Leaf springs are used for vehicle suspensions and are generally bow-shaped, with the middle fixed to the vehicle chassis and the two ends set in the left and right directions for mounting the wheel hub assembly. When encountering bumpy road conditions, the leaf spring can undergo elastic deformation, with its two ends swinging to avoid obstacles.

[0003] After the leaf spring is fixed to the chassis, its ends always bend downward under the load of the wheel hub assembly. The closer the bending points at the ends are, the more obvious the stress concentration there is, which can easily lead to plastic deformation of the leaf spring.

[0004] For this purpose, a leaf spring pressure plate is often installed on the lower side of the leaf spring. The leaf spring is fixed to the chassis through the leaf spring pressure plate. The leaf spring clamp is arranged between the leaf spring pressure plate and the chassis. The leaf spring in the clamping area is not prone to obvious bending. In this way, the bending points at the head and tail ends are moved to the left and right sides of the leaf spring pressure plate to avoid stress concentration.

[0005] However, the experiment found that although the leaf spring cannot produce obvious bending when clamped by the leaf spring pressure plate and the chassis, it will still vibrate relative to the leaf spring pressure plate, causing the threaded fasteners used to fix the leaf spring and the leaf spring pressure plate to easily loosen, resulting in relative movement of the leaf spring and the leaf spring pressure plate, which can easily cause safety accidents during driving.

[0006] Therefore, there is an urgent need for a leaf spring assembly, a suspension structure and a vehicle to solve the above-mentioned technical problems. Utility Model Content

[0007] The utility model aims to provide a leaf spring assembly, a suspension structure and a vehicle, which can avoid stress concentration of the leaf spring and avoid movement of the leaf spring.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] The leaf spring assembly, mounted on the chassis frame, includes:

[0010] A leaf spring, the leaf spring comprising a first mounting portion and a second mounting portion, the second mounting portion being symmetrically arranged on opposite sides of the first mounting portion in the left-right direction, the second mounting portion being spaced apart from the chassis frame in the height direction, and being used for mounting a steering knuckle;

[0011] The leaf spring pressure plate is connected to the chassis frame through a first threaded fastener, the first mounting portion is clamped between the leaf spring pressure plate and the chassis frame in the height direction, the first threaded fastener is distributed on opposite sides of the first mounting portion in the front-rear direction, the first mounting portion is connected to the leaf spring pressure plate through a second threaded fastener, the leaf spring pressure plate includes a plate body and a storage box, the storage box is detachably mounted below the plate body, the nut of the second threaded fastener is located in the storage box, and when the nut abuts against the bottom wall of the storage box, the screw portion of the second threaded fastener is inserted into the first mounting portion and the plate body.

[0012] As a preferred technical solution of the leaf spring assembly, the storage box is connected to the plate body via a third threaded fastener.

[0013] A suspension structure is also provided, comprising the above leaf spring assembly, and the above suspension structure further comprises:

[0014] Swing arms, two of which are symmetrically arranged in the left-right direction, one end of which is rotatably connected to the chassis frame, and the rotation axis is parallel to the front-rear direction;

[0015] A steering knuckle, the steering knuckle is used to install the wheel hub assembly, the upper end of the steering knuckle is ball-jointed to the second mounting portion, and the lower end is ball-jointed to the other end of the swing arm;

[0016] A shock absorber, one end of which is hinged to the swing arm, and the hinge axis is parallel to the front-rear direction, and the other end of which is connected to the chassis frame located above the leaf spring assembly;

[0017] The shock absorber enables the swing arm to always have a tendency to move away from the chassis frame along the height direction.

[0018] As a preferred technical solution of the above-mentioned suspension structure, it also includes a steering gear assembly, which is located between the above-mentioned leaf spring and the above-mentioned swing arm in the above-mentioned height direction. The above-mentioned steering gear assembly includes a steering gear and a steering rod. The above-mentioned steering gear is connected to the above-mentioned steering knuckle through the above-mentioned steering rod, and can drive the above-mentioned steering knuckle to rotate relative to the above-mentioned leaf spring, and the rotation axis is parallel to the above-mentioned height direction.

[0019] As a preferred technical solution of the above suspension structure, the above steering gear is a wire-controlled steering gear, which is fixed to the above chassis frame.

[0020] As a preferred technical solution of the above-mentioned suspension structure, it also includes a buffer block, which is located between the above-mentioned chassis frame and the above-mentioned second mounting part in the above-mentioned height direction, and the above-mentioned buffer block can make the above-mentioned second mounting part have a movement tendency away from the above-mentioned chassis frame in the above-mentioned height direction.

[0021] As a preferred technical solution of the above suspension structure, the above buffer block is fixed to the above chassis frame.

[0022] As a preferred technical solution for the above-mentioned suspension structure, the above-mentioned leaf spring is connected to the above-mentioned steering knuckle through a ball pin assembly, the above-mentioned ball pin assembly includes an articulated seat and a ball pin, the above-mentioned articulated seat is fixed to the above-mentioned second mounting portion, the above-mentioned steering knuckle is provided with a mounting hole, one end of the above-mentioned ball pin is inserted into the above-mentioned mounting hole, and the end of the above-mentioned ball pin provided with a spherical surface is inserted into the above-mentioned articulated seat.

[0023] As a preferred technical solution of the suspension structure, the hinge seat is provided with a limiting protrusion, and the limiting protrusion can abut against the steering knuckle to limit the rotation angle of the steering knuckle under the drive of the steering gear.

[0024] A vehicle is also provided, comprising the above suspension structure.

[0025] Beneficial effects of the utility model:

[0026] The utility model provides a leaf spring assembly, which is installed on a chassis frame, and includes a leaf spring and a leaf spring pressure plate. The leaf spring includes a first mounting portion and a second mounting portion, the second mounting portion is symmetrically arranged on opposite sides of the first mounting portion in the left-right direction, and the second mounting portion is spaced apart from the chassis frame in the height direction, and is used to install a steering knuckle; the leaf spring pressure plate is connected to the chassis frame through a first threaded fastener, the first mounting portion is clamped between the leaf spring pressure plate and the chassis frame in the height direction, the first threaded fastener is distributed on opposite sides of the first mounting portion in the front-back direction, the first mounting portion is connected to the leaf spring pressure plate through a second threaded fastener, the leaf spring pressure plate includes a plate body and a storage box, the storage box is detachably installed below the plate body, the nut of the second threaded fastener is located in the storage box, and when the nut abuts against the bottom wall of the storage box, the screw portion of the second threaded fastener is inserted into the first mounting portion and the plate body. When the threaded connection of the second threaded fastener fails or loosens, the second threaded fastener slides downward until its nut abuts against the bottom wall of the storage box, and its screw portion is still inserted in the first mounting portion and the plate body, limiting the relative movement of the first mounting portion and the plate body.

[0027] The suspension mechanism places the swing arm on the lower side of the leaf spring, so that part of the shock absorber is located on the lower side of the leaf spring, and a small part of the shock absorber exceeds the leaf spring in the height direction and is connected to the chassis frame, thereby rationally utilizing the lower space of the leaf spring. A vehicle equipped with the above suspension mechanism can reduce the installation volume occupied by the suspension structure in the height direction and maintain a high utilization rate of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of a leaf spring assembly provided by an embodiment of the utility model;

[0030] Figure 2 It is a bottom view of the leaf spring assembly provided by the embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of the suspension structure provided by an embodiment of the utility model;

[0032] Figure 4 is a front view of the suspension structure provided by an embodiment of the utility model;

[0033] Figure 5 is a top view of the suspension structure provided by an embodiment of the utility model;

[0034] Figure 6 It is a side view of the suspension structure provided by an embodiment of the utility model.

[0035] In the figure:

[0036] X, height direction; Y, front and back direction; Z, left and right direction;

[0037] 10. Leaf spring assembly; 11. Leaf spring; 111. First mounting portion; 112. Second mounting portion; 12. Leaf spring pressure plate; 121. Plate body; 122. Storage box; 13. First threaded fastener; 14. Second threaded fastener;

[0038] 20. Arm swing;

[0039] 30. Steering knuckle; 40. Shock absorber;

[0040] 50. Steering gear assembly; 51. Steering gear; 52. Steering tie rod;

[0041] 60. Buffer block;

[0042] 70. ball pin assembly; 71. hinge seat; 711. limiting protrusion; 72. ball pin;

[0043] 80. Wheel hub assembly;

[0044] 90. Chassis frame. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 or an electrical connection; 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.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0049] like Figure 1 and Figure 2As shown, the utility model provides a leaf spring assembly 10, which is installed on a chassis frame 90, and includes a leaf spring 11 and a leaf spring pressure plate 12. The leaf spring 11 includes a first mounting portion 111 and a second mounting portion 112, the second mounting portion 112 is symmetrically arranged on opposite sides of the first mounting portion 111 in the left-right direction Z, and the second mounting portion 112 is spaced apart from the chassis frame 90 in the height direction X, and is used to install the steering knuckle 30; the leaf spring pressure plate 12 is connected to the chassis frame 90 through a first threaded fastener 13, the first mounting portion 111 is clamped between the leaf spring pressure plate 12 and the chassis frame 90 in the height direction X, and the first threaded fastener 13 is The front-to-back direction Y is distributed on opposite sides of the first mounting portion 111. The first mounting portion 111 is connected to the leaf spring pressure plate 12 through a second threaded fastener 14. The leaf spring pressure plate 12 includes a plate body 121 and a storage box 122. The storage box 122 is detachably installed below the plate body 121. The nut of the second threaded fastener 14 is located in the storage box 122, and when the nut abuts against the bottom wall of the storage box 122, the screw portion of the second threaded fastener 14 is inserted into the first mounting portion 111 and the plate body 121.

[0050] Specifically, in this embodiment, in the projection in the front-to-back direction Y, the leaf spring 11 is in a bow shape, and the first mounting portion 111 is located in the middle thereof. In the projection in the height direction X, the second mounting portion 112 is provided with two symmetrically arranged at both ends of the first mounting portion 111 in the left-right direction Z. The leaf spring pressure plate 12 includes a plate body 121 and a storage box 122, and the storage box 122 is installed at the bottom of the plate body 121.

[0051] During assembly, the leaf spring 11 is first installed on the leaf spring pressure plate 12, and the second threaded fastener 14 penetrates the plate body 121 and the first mounting portion 111 from bottom to top in sequence, and then is threadedly connected to the nut or the first mounting portion 111. In this way, the leaf spring 11 and the leaf spring pressure plate 12 are relatively fixed, and then the storage box 122 is installed on the lower part of the plate body 121, so that the nut of the second threaded fastener 14 is located in the storage box 122, and finally the entire leaf spring assembly 10 is installed on the chassis frame 90, and multiple first threaded fasteners 13 are connected to fix the plate body 121 and the chassis frame 90.

[0052] The storage box 122 is used to limit the movement distance of the second threaded fastener 14 in the height direction X. When the threaded connection of the second threaded fastener 14 fails or loosens, the second threaded fastener 14 slides downward until its nut abuts against the bottom wall of the storage box 122, and its screw portion is still inserted in the first mounting portion 111 and the plate body 121, limiting the relative movement of the first mounting portion 111 and the plate body 121.

[0053] Specifically, the storage box 122 is connected to the plate body 121 via a third threaded fastener.

[0054] like Figures 3 to 6 As shown, the utility model also provides a suspension structure, including a leaf spring assembly 10, a swing arm 20, a steering knuckle 30 and a shock absorber 40. Among them, two swing arms 20 are symmetrically arranged in the left-right direction Z, one end of the swing arm 20 is rotatably connected to the chassis frame 90, and the rotation axis is parallel to the front-back direction Y; the steering knuckle 30 is used to install the wheel hub assembly 80, the upper end of the steering knuckle 30 is ball-jointed with the second mounting portion 112, and the lower end is ball-jointed with the other end of the swing arm 20; one end of the shock absorber 40 is hinged to the swing arm 20, and the hinge axis is parallel to the front-back direction Y, and the other end of the shock absorber 40 is connected to the chassis frame 90 located above the leaf spring assembly 10, and the shock absorber 40 makes the swing arm 20 always have a tendency to move away from the chassis frame 90 along the height direction X.

[0055] Specifically, the swing arm 20 and the second mounting portion 112 are arranged in a one-to-one correspondence, symmetrically located on both sides of the left-right direction Z, and located below the second mounting portion 112 of the leaf spring pressure plate 12. One end of the swing arm 20 is rotatably connected to the chassis frame 90, so that the other end of the swing arm 20 can rotate relative to the chassis frame 90, and the rotation axis is parallel to the front-rear direction Y; two steering knuckles 30 are provided, symmetrically arranged in the left-right direction Z, and the two steering knuckles 30 are arranged opposite to each other on one side of the wheel hub assembly 80. The upper and lower ends of the steering knuckle 30 are respectively ball-jointed with the leaf spring 11 and the swing arm 20; the shock absorber 40 can undergo elastic deformation to absorb impact. Furthermore, one end of the shock absorber 40 is hinged to the swing arm 20, and the other end is movably connected to the chassis frame 90 through a rubber bushing. When the wheel hub assembly 80 is subjected to a force along the height direction X, the component force parallel to the compression direction of the shock absorber 40 can be absorbed by the shock absorber 40. In this way, the swing arm 20 is placed on the lower side of the leaf spring 11, so that part of the shock absorber 40 is located on the lower side of the leaf spring 11, and a small part of the shock absorber 40 exceeds the leaf spring 11 in the height direction X and is connected to the chassis frame 90, which reasonably utilizes the lower space of the leaf spring 11, can reduce the installation volume occupied by the suspension structure in the height direction X and maintain a high utilization rate of the shock absorber 40.

[0056] Preferably, the compression direction of the shock absorber 40 is parallel to the height direction X.

[0057] It should be noted that the hinge point A between the shock absorber 40 and the swing arm 20, and the hinge point B between the swing arm 20 and the chassis frame 90 meet the projection in the height direction X, and the hinge point A and the hinge point B are spaced apart on the projection plane. This ensures that when the swing arm 20 deflects, the shock absorber 40 is squeezed, so that the shock absorber 40 can undergo elastic deformation.

[0058] In other embodiments, the leaf spring 11 includes a plurality of groups of second mounting portions 112 , each group includes two second mounting portions 112 symmetrically arranged in the left-right direction Z, and the second mounting portions 112 are fixed to the first mounting portions 111 .

[0059] Optionally, the suspension structure further includes a steering gear assembly 50, which is located between the leaf spring 11 and the swing arm 20 in the height direction X. The steering gear assembly 50 includes a steering gear 51 and a steering tie rod 52. The steering gear 51 is connected to the steering knuckle 30 through the steering tie rod 52, and can drive the steering knuckle 30 to rotate relative to the leaf spring 11, and the rotation axis is parallel to the height direction X. In this way, the space between the leaf spring 11 and the swing arm 20 in the height direction X can be reasonably utilized, thereby reducing the space occupied by the suspension structure in the height direction X on the chassis frame 90.

[0060] Optionally, the steering gear 51 is a wire-controlled steering gear 51, which is fixed to the chassis frame 90. Specifically, the wire-controlled steering gear 51 is used to reduce the mechanical connection between it and the steering wheel, and the steering gear 51 is fixed to the chassis frame 90 by bolts.

[0061] It should be noted that the wire-controlled steering device 51 is already a prior art, and its specific communication relationship and movement principle will not be repeated here.

[0062] When the second mounting portion 112 swings toward the chassis frame 90 due to bumpy road conditions or other reasons, if the upward force applied to the wheel hub assembly 80 is too large, resulting in the inability to fully absorb the leaf spring 11, the swing amplitude of the second mounting portion 112 is relatively large, and it is very easy to collide with the chassis frame 90.

[0063] To this end, the suspension structure further includes a buffer block 60, which is located between the chassis frame 90 and the second mounting portion 112 in the height direction X. The buffer block 60 can enable the second mounting portion 112 to have a movement tendency away from the chassis frame 90 in the height direction X. Specifically, the buffer block 60 is fixed to the second mounting portion 112 and / or the chassis frame 90, and the buffer block 60 abuts against the second mounting portion 112 before the chassis frame 90, and the impact force is further absorbed through the elastic deformation of the buffer block 60.

[0064] Optionally, the buffer block 60 is fixed to the chassis frame 90. Specifically, the buffer block 60 is vulcanized on the adapter plate by rubber, and the adapter plate is fixed to the chassis frame 90 by bolts, and the buffer block 60 faces the side where the leaf spring 11 is located.

[0065] It should be noted that rubber vulcanization is a common processing method in the rubber processing field, which can improve the elasticity of rubber. Its specific processing method and reaction principle will not be repeated here.

[0066] Optionally, the leaf spring 11 is connected to the steering knuckle 30 via a ball pin assembly 70, which includes an articulated seat 71 and a ball pin 72. The articulated seat 71 is fixed to the second mounting portion 112, and the steering knuckle 30 is provided with a mounting hole. One end of the ball pin 72 is inserted into the mounting hole, and one end of the ball pin 72 provided with a spherical surface is inserted into the articulated seat 71. Specifically, the articulated seat 71 is provided with a spherical groove. After the articulated seat 71 is fixed to the second mounting portion 112 of the leaf spring 11, the opening of the spherical groove of the articulated seat 71 faces downward, one end of the ball pin 72 is provided with a spherical surface, and the other end is rod-shaped. The spherical end of the ball pin 72 is inserted into the spherical groove and can rotate relative to the articulated seat 71, and the rod-shaped end is inserted into the mounting hole.

[0067] Optionally, the articulated seat 71 is provided with a limiting protrusion 711, which can abut against the steering knuckle 30 to limit the rotation angle of the steering knuckle 30 driven by the steering gear 51. Specifically, when the steering gear 51 drives the steering knuckle 30 to rotate through the steering tie rod 52, the steering knuckle 30 rotates relative to the leaf spring 11 because the leaf spring 11 and the chassis frame 90 remain relatively fixed. When the rotation angle of the steering knuckle 30 reaches a preset maximum rotation angle, the steering knuckle 30 abuts against the limiting protrusion 711 of the articulated seat 71 in the rotation direction to limit the further rotation of the steering knuckle 30.

[0068] Furthermore, in this embodiment, the leaf spring assembly 10 also includes an adjustment component, which includes two adjustment rods. The leaf spring 11 is connected to the leaf spring pressure plate 12 by a bolt, and the bolt passes through the center position of the leaf spring 11 in the left-right direction Z. The leaf spring 11 can rotate around the bolt relative to the leaf spring pressure plate 12. The two adjustment rods are installed on the leaf spring pressure plate 12, and are symmetrically located on opposite sides of the bolt in the left-right direction Z, and are located on the same side of the leaf spring 11 in the front-to-back direction Y. The two adjustment rods are both in contact with the leaf spring 11 in the front-to-back direction Y. When one of the adjustment rods abuts against the leaf spring 11 in a first direction and drives the leaf spring 11 to rotate around the bolt, the other adjustment rod moves in the second direction under the push of the leaf spring 11. When rotated to a preset angle, the two adjustment rods can remain relatively fixed with the leaf spring pressure plate 12 to maintain the relative position of the leaf spring 11 and the leaf spring pressure plate 12. In this way, since the swing arm 20 cannot rotate relative to the chassis frame 90 around the axis parallel to the height direction X, when the leaf spring 11 rotates, the steering knuckle 30 deflects with the hinge point between it and the swing arm 20 as the center of the circle, driven by the second mounting portion 112 of the leaf spring 11. When the second mounting portion 112 on one side of the left-right direction Z moves in the first direction, the second mounting portion 112 on the other side moves in the second direction, so that the caster angles of the wheel hubs on both sides can be made consistent.

[0069] It should be noted that the first direction and the second direction are opposite directions parallel to the front-rear direction Y.

[0070] A vehicle is also provided, comprising the above suspension structure.

[0071] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A leaf spring assembly, mounted on a chassis frame (90), characterized in that: include: A leaf spring (11), the leaf spring (11) comprising a first mounting portion (111) and a second mounting portion (112), the second mounting portion (112) being symmetrically arranged on opposite sides of the first mounting portion (111) in a left-right direction (Z), the second mounting portion (112) being spaced apart from the chassis frame (90) in a height direction (X), and being used for mounting a steering knuckle (30); The leaf spring pressure plate (12) is connected to the chassis frame (90) via a first threaded fastener (13); the first mounting portion (111) is clamped between the leaf spring pressure plate (12) and the chassis frame (90) in the height direction (X); the first threaded fastener (13) is distributed on opposite sides of the first mounting portion (111) in the front-rear direction (Y); the first mounting portion (111) and the leaf spring pressure plate (12) are fastened via a second threaded fastener The leaf spring pressure plate (12) is connected to the plate body (14), the leaf spring pressure plate (12) comprises a plate body (121) and a storage box (122), the storage box (122) is detachably mounted below the plate body (121), the nut of the second threaded fastener (14) is located in the storage box (122), and when the nut abuts against the bottom wall of the storage box (122), the screw portion of the second threaded fastener (14) is inserted into the first mounting portion (111) and the plate body (121).

2. The leaf spring assembly according to claim 1, characterized in that: The storage box (122) is connected to the plate body (121) via a third threaded fastener.

3. A suspension structure, characterized in that: The leaf spring assembly (10) according to claim 1, wherein the suspension structure further comprises: A swing arm (20), wherein two swing arms (20) are symmetrically arranged in the left-right direction (Z), one end of the swing arm (20) is rotatably connected to the chassis frame (90), and the rotation axis is parallel to the front-rear direction (Y); A steering knuckle (30), the steering knuckle (30) being used to install the wheel hub assembly (80), the upper end of the steering knuckle (30) being ball-jointed to the second mounting portion (112), and the lower end of the steering knuckle (30) being ball-jointed to the other end of the swing arm (20); A shock absorber (40), one end of the shock absorber (40) being hinged to the swing arm (20), and the hinge axis is parallel to the front-rear direction (Y), and the other end of the shock absorber (40) is connected to the chassis frame (90) located above the leaf spring assembly (10); The shock absorber (40) enables the swing arm (20) to always have a tendency to move away from the chassis frame (90) along the height direction (X).

4. The suspension structure according to claim 3, characterized in that: The invention also includes a steering gear assembly (50), wherein the steering gear assembly (50) is located between the leaf spring (11) and the swing arm (20) in the height direction (X), and the steering gear assembly (50) includes a steering gear (51) and a steering tie rod (52). The steering gear (51) is connected to the steering knuckle (30) through the steering tie rod (52), and can drive the steering knuckle (30) to rotate relative to the leaf spring (11), and the rotation axis is parallel to the height direction (X).

5. The suspension structure according to claim 4, characterized in that: The steering gear (51) is a wire-controlled steering gear (51) and is fixed to the chassis frame (90).

6. The suspension structure according to claim 3, characterized in that: The invention also comprises a buffer block (60), wherein in the height direction (X), the buffer block (60) is located between the chassis frame (90) and the second mounting portion (112), and the buffer block (60) can enable the second mounting portion (112) to have a movement tendency away from the chassis frame (90) in the height direction (X).

7. The suspension structure according to claim 6, characterized in that: The buffer block (60) is fixed to the chassis frame (90).

8. The suspension structure according to claim 4, characterized in that: The leaf spring (11) is connected to the steering knuckle (30) via a ball pin assembly (70), wherein the ball pin assembly (70) comprises an articulated seat (71) and a ball pin (72), wherein the articulated seat (71) is fixed to the second mounting portion (112), wherein the steering knuckle (30) is provided with a mounting hole, wherein one end of the ball pin (72) is inserted into the mounting hole, and wherein one end of the ball pin (72) having a spherical surface is inserted into the articulated seat (71).

9. The suspension structure according to claim 8, characterized in that: The hinge seat (71) is provided with a limiting protrusion (711), and the limiting protrusion (711) can abut against the steering knuckle (30) to limit the rotation angle of the steering knuckle (30) driven by the steering gear (51).

10. A vehicle, characterized in that Comprising the suspension structure described in any one of claims 3-9.

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