Plate spring assembly, suspension and vehicle

Abstract

The invention discloses a plate spring assembly, a suspension and a vehicle. The plate spring assembly comprises a plate spring; and the lifting lug assemblies are arranged at the two ends of the plate spring correspondingly, and the lifting lug assemblies are located above the plate spring correspondingly. The lifting lug assemblies are arranged at the two ends of the plate spring correspondingly and located above the plate spring correspondingly, so that the stress structure of the plate spring can be improved, the service life of the plate spring is prolonged, in addition, longitudinal deformation of the plate spring can be reduced, and the operation stability of vehicle running is improved.

Description

Technical Field

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

[0002] In the prior art, a leaf spring assembly includes a leaf spring and a lifting lug assembly, with the lifting lug assembly disposed on either side of the leaf spring. However, existing leaf spring assemblies also have significant drawbacks: due to space limitations, the leaf spring still exhibits a certain degree of curvature when fully loaded, which reduces vehicle stability. Furthermore, the placement of the lifting lug assembly on either side of the leaf spring shortens the overall length of the leaf spring, resulting in more concentrated stress distribution and reduced strength. 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, the present invention provides a leaf spring assembly that improves the stress-bearing structure of the leaf spring, thereby increasing the life of the leaf spring, and further reduces the longitudinal deformation of the leaf spring, thereby improving the handling stability of the vehicle.

[0004] The present invention further provides a suspension.

[0005] The present invention further provides a vehicle.

[0006] The leaf spring assembly according to the present invention comprises: a leaf spring; and a lifting ear assembly, wherein the lifting ear assemblies are respectively arranged at both ends of the leaf spring, and the lifting ear assemblies are respectively located above the leaf spring.

[0007] According to the leaf spring assembly of the present invention, the ear assemblies are respectively arranged at both ends of the leaf spring, and the ear assemblies are respectively located above the leaf spring. This can improve the force structure of the leaf spring, thereby increasing the life of the leaf spring. In addition, it can reduce the longitudinal deformation of the leaf spring and improve the handling stability of the vehicle.

[0008] In some examples of the present invention, the leaf spring has a relative fixed end and a movable end, and the ear assembly includes: a first ear and a second ear, the first ear is arranged above the fixed end, and the second ear is arranged above the movable end.

[0009] In some examples of the present invention, the first lifting ear includes: a first main board, a first end plate and a first side plate, the first main board is connected to the fixed end, the first end plate is connected to the side of the first main board away from the second lifting ear, and the first side plate is connected to the first main board and the first end plate; the second lifting ear includes: a second main board, a second end plate and a second side plate, the second main board is connected to the movable end, the second end plate is connected to the side of the second main board away from the first lifting ear, and the second side plate is connected to the second main board and the second end plate.

[0010] In some examples of the present invention, the first main board includes: a first flat plate segment, a first arc segment, and a second flat plate segment, the first arc segment is connected between the first flat plate segment and the second flat plate segment, and the first flat plate segment and the second flat plate segment are respectively connected to the fixed end; the second main board includes: a third flat plate segment, a second arc segment, and a third arc segment, the second arc segment is connected between the third flat plate segment and the third arc segment, and the third flat plate segment is connected to the movable end.

[0011] In some examples of the present invention, the leaf spring assembly further includes: a first fastener and a second fastener, the first flat plate segment and the second flat plate segment are respectively provided with a first fixing hole, the third flat plate segment is provided with a second fixing hole, the first fastener passes through the first fixing hole and is connected to the fixed end, and the second fastener passes through the second fixing hole and is connected to the movable end.

[0012] In some examples of the present invention, the leaf spring assembly further includes: a first guard plate and a second guard plate, the first guard plate being arranged below the fixed end, the second guard plate being arranged below the movable end, the first fastener being fixed to the first guard plate, and the second fastener being fixed to the second guard plate.

[0013] In some examples of the present invention, the first lifting ear and the second lifting ear are both integrally formed composite material structural members, and the first guard plate and the second guard plate are both carbon steel structural members.

[0014] In some examples of the present invention, the first side plate is provided with a first connection hole, the first connection hole is suitable for connecting to the frame, and the second side plate is provided with a second connection hole, the second connection hole is suitable for connecting to the frame.

[0015] The suspension according to the present invention includes the leaf spring assembly described above.

[0016] A vehicle according to the present invention includes the suspension described above.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 is a structural schematic diagram of a leaf spring assembly according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a first portion of a leaf spring assembly according to an embodiment of the present invention; Figure 3 2 is a schematic structural diagram of the second part of the leaf spring assembly according to an embodiment of the present invention.

[0019] Reference numerals: 1. Leaf spring assembly; 10. Leaf spring; 100. Fixed end; 101. Movable end; 20. Lifting ear assembly; 200. First lifting ear; 201. Second lifting ear; 202. First main board; 203. First end plate; 204. First side plate; 205. Second main board; 206. Second end plate; 207. Second side plate; 208. First flat section; 209. First arc section; 210. Second flat section; 211. Third flat section; 212. Second arc section; 213. Third arc section; 214. First fixing hole; 215. Second fixing hole; 216. First connecting hole; 217. Second connecting hole; 30. First fastener; 40. Second fastener; 50. First guard plate; 60. Second guard plate. DETAILED DESCRIPTION

[0020] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0021] Reference below Figure 1-Figure 3 A leaf spring assembly 1 according to an embodiment of the present invention will be described.

[0022] like Figure 1-Figure 3 As shown, a leaf spring assembly 1 according to an embodiment of the present invention includes a leaf spring 10 and a lifting lug assembly 20. The leaf spring 10 is a very important elastic element in a vehicle suspension, absorbing and mitigating vibrations and impacts caused by the road surface during vehicle travel, thereby improving vehicle smoothness and ride comfort. The lifting lug assembly 20 is used to mount and secure the leaf spring 10. The lifting lug assembly 20 connects the leaf spring 10 to the vehicle frame and allows for a certain amount of rotation and displacement to accommodate dynamic changes during vehicle motion, thereby ensuring proper suspension operation.

[0023] like Figure 1As shown, the lug assemblies 20 are respectively provided at both ends of the leaf spring 10, and the lug assemblies 20 are respectively located above the leaf spring 10. With the lug assemblies 20 provided at both ends of the leaf spring 10, the two ends of the leaf spring 10 can be connected to the corresponding parts of the vehicle through the lug assemblies 20, ensuring that the leaf spring 10 can effectively absorb and mitigate impact and vibration from the ground, while also adapting to the mechanical changes caused by vehicle movements such as turning and up and down bumps, thereby adapting to various dynamic changes during vehicle driving. The lug assemblies 20 are respectively located above the leaf spring 10, and the stress of the leaf spring 10 is greatly reduced when operating under full load. This improves the stress structure of the leaf spring 10, thereby increasing the life of the leaf spring 10. In addition, it can reduce the longitudinal deformation of the leaf spring 10, improve the handling stability of the vehicle, and at the same time, improve the ride comfort of the entire vehicle and reduce the stiffness of the leaf spring 10. There are two lug assemblies 20.

[0024] Therefore, the ear assemblies 20 are respectively arranged at both ends of the leaf spring 10, and the ear assemblies 20 are respectively located above the leaf spring 10. This can improve the force structure of the leaf spring 10, thereby increasing the life of the leaf spring 10. In addition, the longitudinal deformation of the leaf spring 10 can be reduced, and the handling stability of the vehicle can be improved.

[0025] Specifically, if Figure 1-Figure 3As shown, the leaf spring 10 has a fixed end 100 and a movable end 101 relative to each other, and the lifting ear assembly 20 includes: a first lifting ear 200 and a second lifting ear 201, the first lifting ear 200 is arranged above the fixed end 100, and the second lifting ear 201 is arranged above the movable end 101. It should be noted that the leaf spring 10 is provided with a fixed end 100 and a movable end 101, and the fixed end 100 and the movable end 101 are arranged relative to each other, which can optimize the performance of the suspension. The fixed end 100 is firmly connected to the vehicle through the lifting ear assembly 20, which can provide a stable support point for the leaf spring 10. This connection point allows less displacement, thereby ensuring that the leaf spring 10 can effectively transmit force and torque. The movable end 101 is connected to the vehicle through the lifting ear assembly 20. Compared with the fixed end 100, the movable end 101 allows greater freedom and flexibility, and can adapt to the complex movements of the vehicle caused by uneven road surface during driving, including up and down jumping, twisting, etc., thereby better absorbing vibrations and improving driving stability and ride comfort. The lifting ear assembly 20 includes: a first lifting ear 200 And the second lifting ear 201, the first lifting ear 200 and the second lifting ear 201 are components of the lifting ear assembly 20, both of which can connect the leaf spring 10 to the vehicle, the first lifting ear 200 is arranged above the fixed end 100, and the second lifting ear 201 is arranged above the movable end 101, the first lifting ear 200 and the second lifting ear 201 are respectively arranged above the fixed end 100 and the movable end 101, that is, the lifting ear assembly 20 is respectively located above the fixed end 100 and the movable end 101, at this time, the stress of the leaf spring 10 is greatly reduced when working in a fully loaded state, which can improve the force structure of the leaf spring 10, thereby increasing the service life of the leaf spring 10, in addition, the longitudinal deformation of the leaf spring 10 can be reduced, the handling stability of the vehicle can be improved, and at the same time, the smoothness of the entire vehicle can be improved and the stiffness of the leaf spring 10 can be reduced.

[0026] Among them, such as Figure 2As shown, the first lifting ear 200 includes: a first main plate 202, a first end plate 203 and a first side plate 204. The first main plate 202 is connected to the fixed end 100. The first end plate 203 is connected to the side of the first main plate 202 away from the second lifting ear 201. The first side plate 204 is connected to the first main plate 202 and the first end plate 203. The first main plate 202, the first end plate 203 and the first side plate 204 are components of the first lifting ear 200. The first main plate 202 can play a connecting role, allowing the first lifting ear 200 to be connected to the leaf spring 10. The first end plate 203 can play a limiting role, which can limit the leaf spring 10. The first side plate 204 can play a connecting role, which can be connected to the first main plate 202 and the first end plate 203. At this time, the first lifting ear 200 forms a whole, which is convenient for the installation and setting of the first lifting ear 200. The first main plate 202 is connected to the fixed end 100. At this time, the first lifting ear 200 can be connected to the fixed end 1 00 connection, the first ear 200 can be used to fix the leaf spring 10, and allows the leaf spring 10 to have a smaller displacement, ensuring that the leaf spring 10 can reliably transmit force and torque while maintaining the stability of the structure, the first end plate 203 is connected to the side of the first main board 202 away from the second ear 201, the first end plate 203 is connected to the first main board 202, the first end plate 203 can play a certain limiting role on the leaf spring 10, the first side plate 204 is connected to the first main board 202 and the first end plate 203, at this time the first ear 200 forms a whole, which is convenient for the installation and setting of the first ear 200.

[0027] like Figure 3As shown, the second lifting ear 201 includes: a second main plate 205, a second end plate 206 and a second side plate 207. The second main plate 205 is connected to the movable end 101, the second end plate 206 is connected to the side of the second main plate 205 away from the first lifting ear 200, and the second side plate 207 is connected to the second main plate 205 and the second end plate 206. The second main plate 205, the second end plate 206 and the second side plate 207 are components of the second lifting ear 201. The second main plate 205 can play a connecting role, allowing the second lifting ear 201 to be connected to the leaf spring 10. The second end plate 206 can play a limiting role, which can limit the leaf spring 10. The second side plate 207 can play a connecting role, and can be connected to the second main plate 205 and the second end plate 206. At this time, the second lifting ear 201 forms a whole, which is convenient for the installation and setting of the second lifting ear 201. The second main plate 205 is connected to the movable end 101. At this time, the second lifting ear 201 can be connected to the movable end 101. The ear 201 can be used to fix the leaf spring 10, and allows the leaf spring 10 to rotate and displace to a certain extent, so that the leaf spring 10 can absorb more vibration and impact, and can improve the vehicle's driving stability and ride comfort. The second end plate 206 is connected to the side of the second main board 205 away from the first lifting ear 200. The second end plate 206 is connected to the second main board 205. The second end plate 206 can play a certain limiting role on the leaf spring 10. The second side plate 207 is connected to the second main board 205 and the second end plate 206. At this time, the second lifting ear 201 forms a whole, which is convenient for the installation and setting of the second lifting ear 201.

[0028] In addition, if Figure 2 As shown, the first main board 202 includes: a first flat section 208, a first arc section 209 and a second flat section 210, the first arc section 209 is connected between the first flat section 208 and the second flat section 210, and the first flat section 208 and the second flat section 210 are respectively connected to the fixed end 100. The first flat section 208, the first arc section 209 and the second flat section 210 are components of the first main board 202. The first flat section 208 and the second flat section 210 can play a connecting role and can both be connected to the fixed end 100. The first arc section 209 can play a connecting role and can be used to connect the first flat section 208 and the second flat section 210. The first arc section 209 is connected between the first flat section 208 and the second flat section 210. The first arc section 209 can realize the connection between the first flat section 208 and the second flat section 210. At this time, the first main board 202 forms a whole. The first flat section 208 and the second flat section 210 are respectively connected to the fixed end 100. At this time, the first lifting ear 200 can be connected to the fixed end 100. The first lifting ear 200 can be used to fix the leaf spring 10 and allow the leaf spring 10 to have a small displacement, ensuring that the leaf spring 10 can reliably transmit force and torque while maintaining the stability of the structure.

[0029] like Figure 3 As shown, the second main board 205 includes: a third flat section 211 , a second arc section 212 and a third arc section 213 , the second arc section 212 is connected between the third flat section 211 and the third arc section 213 , and the third flat section 211 is connected to the movable end 101 . The third flat section 211, the second arc section 212 and the third arc section 213 are components of the second main board 205. The third flat section 211 can play a connecting role and can be connected to the movable end 101. The second arc section 212 and the third arc section 213 can both play a connecting role. The second arc section 212 can be used to connect the third flat section 211 and the third arc section 213. The second arc section 212 is connected between the third flat section 211 and the third arc section 213. The second arc section 212 can realize the connection between the third flat section 211 and the third arc section 213. At this time, the second main board 205 forms a whole. The third flat section 211 is connected to the movable end 101. At this time, the second lifting ear 201 can be connected to the movable end 101. The second lifting ear 201 can be used to fix the leaf spring 10 and allow the leaf spring 10 to have a certain degree of rotation and displacement. In this way, the leaf spring 10 can absorb more vibration and impact, thereby improving the vehicle's driving stability and ride comfort.

[0030] Of course, if Figure 1-Figure 3 As shown, the leaf spring assembly 1 also includes: a first fastener 30 and a second fastener 40, the first flat section 208 and the second flat section 210 are respectively provided with a first fixing hole 214, and the third flat section 211 is provided with a second fixing hole 215, the first fastener 30 passes through the first fixing hole 214 to be connected to the fixed end 100, and the second fastener 40 passes through the second fixing hole 215 to be connected to the movable end 101.

[0031] It should be noted that the first fastener 30 and the second fastener 40 can be used to connect and fasten different components, which can ensure the stability and safety of the entire system. The first plate segment 208 and the second plate segment 210 are respectively provided with a first fixing hole 214, and the first fixing hole 214 can play a role in precise positioning and cooperate with the first fastener 30. The third plate segment 211 is provided with a second fixing hole 215, and the second fixing hole 215 can play a role in precise positioning and cooperate with the second fastener 40. The first fastener 30 passes through the first fixing hole 214 and is connected to the fixed end 100. Through the cooperation of the first fastener 30 and the first fixing hole 214, the first The lifting lug 200 is connected to the fixed end 100. The first lifting lug 200 can be used to fix the leaf spring 10 and allows the leaf spring 10 to have a small displacement, ensuring that the leaf spring 10 can reliably transmit force and torque while maintaining structural stability. The second fastener 40 is passed through the second fixing hole 215 and connected to the movable end 101. Through the cooperation of the second fastener 40 and the second fixing hole 215, the second lifting lug 201 can be connected to the movable end 101. The second lifting lug 201 can be used to fix the leaf spring 10 and allows the leaf spring 10 to have a certain degree of rotation and displacement. In this way, the leaf spring 10 can absorb more vibration and impact, which can improve the vehicle's driving stability and ride comfort. Among them, the number of the first fastener 30 and the first fixing hole 214 can both be set to four, the number of the second fastener 40 and the second fixing hole 215 can both be set to two, and the first fastener 30 and the second fastener 40 can both be configured as bolts.

[0032] Furthermore, if Figure 1-Figure 3As shown, the leaf spring assembly 1 further includes: a first guard plate 50 and a second guard plate 60. The first guard plate 50 is arranged below the fixed end 100, and the second guard plate 60 is arranged below the movable end 101. The first fastener 30 is fixed to the first guard plate 50, and the second fastener 40 is fixed to the second guard plate 60. The first guard plate 50 and the second guard plate 60 can both play a protective role and can be used to protect the leaf spring 10 and increase the strength, thereby preventing the pre-tightening force of the first fastener 30 and the second fastener 40 from damaging the leaf spring 10. The first guard plate 50 is arranged below the fixed end 100. At this time, the first guard plate 50 can play a protective role and can prevent the first fastener 30 from damaging the leaf spring 10 when passing through the first fixing hole 214 and connecting with the fixed end 100, thereby protecting the leaf spring 10. The second guard plate 60 is arranged below the movable end 101. At this time, the second guard plate 60 can play a protective role. This can prevent the second fastener 40 from damaging the leaf spring 10 when passing through the second fixing hole 215 and connecting with the movable end 101, thereby protecting the leaf spring 10. The first fastener 30 is fixed on the first guard plate 50. At this time, the first guard plate 50 can prevent the pre-tightening force of the first fastener 30 from damaging the leaf spring 10, thereby protecting the leaf spring 10 and increasing the strength of the leaf spring 10. The second fastener 40 is fixed on the second guard plate 60. At this time, the second guard plate 60 can prevent the pre-tightening force of the second fastener 40 from damaging the leaf spring 10, thereby protecting the leaf spring 10 and increasing the strength of the leaf spring 10.

[0033] In addition, Figure 1-Figure 3 As shown, the first lifting lug 200 and the second lifting lug 201 are both integrally formed composite material structural members, and the first guard plate 50 and the second guard plate 60 are both carbon steel structural members. The first-molded structural member is more stable and firm, making it easier to install and set up. It only requires a single processing mold, facilitating manufacturing and reducing potential problems during assembly. It also simplifies the production process and reduces manufacturing costs. Composite structural members have advantages such as light weight, high strength, high rigidity, and corrosion resistance. The first and second lifting ears 200, 201 are both integrally formed composite structural members. In this case, the first and second lifting ears 200, 201 are more suitable for actual working conditions and can better connect the leaf spring 10 to the vehicle, thereby improving vehicle driving stability and ride comfort. Carbon steel structural members have advantages such as high strength, good wear resistance, low cost, and easy maintenance. The first and second guard plates 50, 60 are both carbon steel structural members. In this case, the first and second guard plates 50, 60 are more suitable for actual working conditions. They can protect the leaf spring 10 and increase its strength, thereby preventing the preload force of the first and second fasteners 30, 40 from damaging the leaf spring 10. The first and second lifting ears 200, 201 can both be cast iron.

[0034] It should be noted that if Figure 2 and Figure 3As shown, the first side plate 204 is provided with a first connection hole 216, which is suitable for connecting to the vehicle frame, and the second side plate 207 is provided with a second connection hole 217, which is suitable for connecting to the vehicle frame. The first connection hole 216 can serve as a connection, allowing the first side plate 204 to connect to other components. The first connection hole 216 is suitable for connecting to the vehicle frame. The first connection hole 216 can realize the connection between the leaf spring 10 and the vehicle frame, and allows a certain amount of rotation and displacement to adapt to dynamic changes during vehicle movement, thereby ensuring the normal operation of the suspension. The second side plate 207 is provided with a second connection hole 217, which can serve as a connection, allowing the second side plate 207 to connect to other components. The second connection hole 217 is suitable for connecting to the vehicle frame. The second connection hole 217 can realize the connection between the leaf spring 10 and the vehicle frame, and allows a certain amount of rotation and displacement to adapt to dynamic changes during vehicle movement, thereby ensuring the normal operation of the suspension. The first lifting lug 200 and the second lifting lug 201 can rotate around the axes of the first connecting hole 216 and the second connecting hole 217 respectively.

[0035] The suspension according to the embodiment of the present invention includes: the leaf spring assembly 1 described in the above embodiment.

[0036] A vehicle according to an embodiment of the present invention includes: the suspension described in the above embodiment.

[0037] 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 to 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, rather than indicating or implying 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.

[0038] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact via another feature between them. In the description of the present invention, a first feature being "above", "above" and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature.

[0039] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] While 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 invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A leaf spring assembly (1), characterized in that: include: Leaf spring (10); A lifting lug assembly (20), wherein the lifting lug assembly (20) is respectively arranged at both ends of the leaf spring (10), and the lifting lug assembly (20) is respectively located above the leaf spring (10).

2. The leaf spring assembly (1) according to claim 1, characterized in that The leaf spring (10) has a fixed end (100) and a movable end (101) opposite to each other, and the lifting lug assembly (20) comprises a first lifting lug (200) and a second lifting lug (201), wherein the first lifting lug (200) is arranged above the fixed end (100), and the second lifting lug (201) is arranged above the movable end (101).

3. The leaf spring assembly (1) according to claim 2, characterized in that The first lifting lug (200) comprises: a first main plate (202), a first end plate (203) and a first side plate (204); the first main plate (202) is connected to the fixed end (100); the first end plate (203) is connected to a side of the first main plate (202) away from the second lifting lug (201); and the first side plate (204) is connected to the first main plate (202) and the first end plate (203); The second lifting lug (201) comprises: a second main plate (205), a second end plate (206) and a second side plate (207); the second main plate (205) is connected to the movable end (101); the second end plate (206) is connected to a side of the second main plate (205) away from the first lifting lug (200); and the second side plate (207) is connected to the second main plate (205) and the second end plate (206).

4. The leaf spring assembly (1) according to claim 3, characterized in that The first main board (202) comprises: a first flat plate segment (208), a first arc segment (209) and a second flat plate segment (210); the first arc segment (209) is connected between the first flat plate segment (208) and the second flat plate segment (210); the first flat plate segment (208) and the second flat plate segment (210) are respectively connected to the fixed end (100); The second main board (205) comprises: a third flat plate segment (211), a second arc segment (212) and a third arc segment (213); the second arc segment (212) is connected between the third flat plate segment (211) and the third arc segment (213); and the third flat plate segment (211) is connected to the movable end (101).

5. The leaf spring assembly (1) according to claim 4, characterized in that Also includes: A first fastener (30) and a second fastener (40), the first flat plate segment (208) and the second flat plate segment (210) are respectively provided with a first fixing hole (214), the third flat plate segment (211) is provided with a second fixing hole (215), the first fastener (30) passes through the first fixing hole (214) to be connected to the fixed end (100), and the second fastener (40) passes through the second fixing hole (215) to be connected to the movable end (101).

6. The leaf spring assembly (1) according to claim 5, characterized in that Also includes: A first guard plate (50) and a second guard plate (60), wherein the first guard plate (50) is arranged below the fixed end (100), and the second guard plate (60) is arranged below the movable end (101), the first fastener (30) is fixed to the first guard plate (50), and the second fastener (40) is fixed to the second guard plate (60).

7. The leaf spring assembly (1) according to claim 6, characterized in that The first lifting lug (200) and the second lifting lug (201) are both integrally formed composite material structural parts, and the first guard plate (50) and the second guard plate (60) are both carbon steel structural parts.

8. The leaf spring assembly (1) according to claim 3, characterized in that The first side plate (204) is provided with a first connection hole (216), and the first connection hole (216) is suitable for connecting to the vehicle frame. The second side plate (207) is provided with a second connection hole (217), and the second connection hole (217) is suitable for connecting to the vehicle frame.

9. A suspension, characterized in that: include: The leaf spring assembly (1) according to any one of claims 1 to 8.

10. A vehicle, characterized in that: include: The suspension as claimed in claim 9.

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