Lightweight rubber spring assembly

Abstract

This utility model relates to the field of rubber spring technology, and in particular to a lightweight rubber auxiliary spring assembly, including a rubber spring mounted on a vehicle frame. The rubber spring includes an outer fixed bracket, which is trapezoidal in shape. A rubber main spring is integrally vulcanized on both sides of the outer fixed bracket. The rubber main spring has a hollow skeleton cavity. A heavy-duty support rubber block is provided above the skeleton cavity. Rubber support arms are provided between the left and right cavity walls of the skeleton cavity and the corresponding two sides of the outer fixed bracket, respectively. The two rubber support arms are inverted V-shapes. An inner support skeleton is integrally vulcanized inside the skeleton cavity. It also includes an auxiliary spring fixedly mounted on the axle and used in conjunction with the rubber spring. This utility model reduces the mass of the rubber spring, reduces friction noise during driving, and significantly improves driving comfort. The lightweight rubber spring is lighter than traditional rubber auxiliary springs, and the rubber stiffness can be quickly switched between high and low frequencies, resulting in a longer service life.

Description

Technical Field

[0001] This utility model relates to the field of rubber spring technology, and in particular to a lightweight rubber auxiliary spring assembly. Background Technology

[0002] Existing light-duty trucks use leaf springs to connect the frame and secondary leaf springs to connect the axle. The main and secondary leaf springs work together to dampen the vehicle. However, leaf springs are heavy and prone to friction noise during driving, resulting in poor driving comfort, high cost, and short lifespan. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a lightweight rubber auxiliary spring assembly that can reduce the weight of the suspension, has low cost, good driving feel, long service life, and allows for rapid switching of rubber stiffness.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a lightweight rubber auxiliary spring assembly, including a rubber spring mounted on the vehicle frame, the rubber spring including an outer fixing bracket, the outer fixing bracket being trapezoidal, a rubber main spring integrally vulcanized on the two waist surfaces of the outer fixing bracket, the rubber main spring having a hollow skeleton cavity, a heavy-duty support rubber block being provided above the skeleton cavity, rubber support arms being provided between the left and right cavity walls of the skeleton cavity and the corresponding two waist surfaces of the outer fixing bracket, the two rubber support arms being inverted V-shapes, an inner support skeleton integrally vulcanized inside the skeleton cavity; and also including an auxiliary spring fixedly mounted on the axle for use in conjunction with the rubber spring.

[0005] As a preferred technical solution, the external fixing bracket includes a trapezoidal main fixing surface, one side of which is provided with a 90° flange, and a number of reinforcing ribs are provided connecting the main fixing surface and the flange, and a number of mounting holes are provided on the flange.

[0006] As a preferred technical solution, the inner cavity of the skeleton includes an upper support cavity and a lower support cavity, both of which are triangular in shape, and the heavy-duty support rubber block is integrally vulcanized on the upper surface of the upper support cavity.

[0007] As a preferred technical solution, the rubber support arms are integrally vulcanized on the two side walls of the lower support cavity, and a rectangular rubber connecting plate is integrally provided at the top of the rubber support arm. The rectangular rubber connecting plate is vulcanized together with the two waist surfaces of the external fixing bracket.

[0008] As a preferred technical solution, the shape of the inner support skeleton is adapted to the inner cavity of the skeleton. The inner support skeleton includes an upper skeleton and a lower skeleton, both of which are triangular. The inner support skeleton has a hollow structure, and the wall thickness of the inner support skeleton is greater than the wall thickness of the inner cavity of the skeleton.

[0009] As a preferred technical solution, the auxiliary spring includes an auxiliary spring bracket mounted on the axle, a rectangular auxiliary spring rubber integrally vulcanized on the auxiliary spring bracket, the auxiliary spring bracket being fixed to the axle by U-bolts, and the upper surface area of ​​the auxiliary spring rubber being larger than the bottom area of ​​the lower support cavity.

[0010] As a preferred technical solution, both the external fixing bracket and the internal support frame are cast steel brackets.

[0011] Due to the adoption of the above technical solution, the lightweight rubber auxiliary spring assembly includes a rubber spring mounted on the vehicle frame. The rubber spring includes an outer fixed bracket, which is trapezoidal. A rubber main spring is integrally vulcanized on both sides of the outer fixed bracket. The rubber main spring has a hollow skeleton cavity. A heavy-duty support rubber block is provided above the skeleton cavity. Rubber support arms are provided between the left and right cavity walls of the skeleton cavity and the corresponding two sides of the outer fixed bracket. The two rubber support arms are inverted V-shapes. An inner support skeleton is integrally vulcanized inside the skeleton cavity. It also includes an auxiliary spring fixedly mounted on the axle and used in conjunction with the rubber spring. The beneficial effects of this utility model are: after the outer fixed bracket contacts the vehicle frame, it is fixed with bolts. The bottom of the rubber spring and the auxiliary spring mounted on the axle make contact and connect after bearing the load to perform shock absorption. After the auxiliary spring is assembled with the corresponding position on the axle, it is fixed with U-bolts. The lightweight rubber spring has the main shock absorption function during vehicle driving, and the rubber main spring and auxiliary spring work together during heavy driving. The rubber primary spring has an inverted V-shaped structure, allowing for rapid switching between high and low rubber stiffness, thus improving durability. Under light loads, the inverted V-shaped rubber support arm bears the load, ensuring comfortable driving. Under full loads, the internal support frame of the rubber primary spring bears the main weight, providing final support and meeting load-bearing requirements. This invention reduces the mass of the rubber spring, lowers friction noise during driving, significantly improves driving comfort, and the lightweight rubber spring is lighter than traditional rubber secondary springs. Its high-frequency stiffness allows for rapid switching between high and low values, resulting in a longer service life. Attached Figure Description

[0012] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0013] Figure 1 This is a schematic diagram of the lightweight rubber spring assembly of this utility model;

[0014] Figure 2This is a schematic diagram of the external fixing bracket for the lightweight rubber spring assembly of this utility model;

[0015] Figure 3 This is a schematic diagram of the auxiliary spring structure of the lightweight rubber auxiliary spring assembly of this utility model;

[0016] Figure 4 This is a schematic diagram of the rubber main spring structure of the lightweight rubber auxiliary spring assembly of this utility model;

[0017] Figure 5 This is a schematic diagram of the internal support skeleton structure of the lightweight rubber spring assembly of this utility model.

[0018] In the diagram: 1-External fixing bracket; 11-Main fixing surface; 12-Reinforcing rib; 13-Mounting hole; 2-Rubber main spring; 21-Inner cavity of the skeleton; 211-Upper support cavity; 212-Lower support cavity; 22-Heavy-load support rubber block; 23-Rubber support arm; 231-Rectangular rubber connecting plate; 3-Inner support skeleton; 31-Upper skeleton; 32-Lower skeleton; 4-Secondary spring; 41-Secondary spring bracket; 42-Secondary spring rubber. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0020] like Figures 1 to 5As shown, the lightweight rubber auxiliary spring assembly includes a rubber spring mounted on the vehicle frame. The rubber spring includes an outer fixed bracket 1, which is trapezoidal. A rubber main spring 2 is integrally vulcanized on both sides of the outer fixed bracket 1. The rubber main spring 2 has a hollow skeleton cavity 21. A heavy-duty support rubber block 22 is provided above the skeleton cavity 21. Rubber support arms 23 are provided between the left and right cavity walls of the skeleton cavity 21 and the corresponding two sides of the outer fixed bracket 1, respectively. The two rubber support arms 23 are inverted V-shapes. An inner support skeleton 3 is integrally vulcanized inside the skeleton cavity 21. It also includes an auxiliary spring 4 fixedly mounted on the axle and used in conjunction with the rubber spring. After the outer fixed bracket 1 contacts the vehicle frame, it is fixed with bolts. The bottom of the rubber spring and the auxiliary spring 4 mounted on the axle make contact and connect after being loaded to provide shock absorption. After the auxiliary spring 4 is assembled with the corresponding position on the axle, it is fixed with U-bolts. The lightweight rubber spring provides the main shock absorption function when the vehicle is in motion, and the rubber main spring 2 works in conjunction with the auxiliary spring when the vehicle is under heavy load. The rubber main spring 2 has an inverted V-shaped structure, which allows for rapid switching between high and low rubber stiffness, improving durability. Under light loads, the inverted V-shaped rubber support arm 23 bears the force, ensuring comfortable driving. Under full loads, the internal support frame 3 of the rubber main spring 2 bears the main weight, providing final support and meeting load-bearing requirements. This invention reduces the mass of the rubber spring, lowers friction noise during driving, and significantly improves driving comfort. The lightweight rubber spring is lighter than the traditional rubber auxiliary spring 4, allows for rapid switching between high and low rubber stiffness at high frequencies, and has a longer service life.

[0021] like Figure 2 As shown, the external fixation bracket 1 includes a trapezoidal main fixing surface 11. One side of the main fixing surface 11 has a 90° flange. Several reinforcing ribs 12 connect the main fixing surface 11 and the flange. Several mounting holes 13 are provided on the flange. The main fixing surface 11 is bent into a trapezoidal shape. The external fixation bracket 1 is fixedly installed on the vehicle frame through the mounting holes 13 on the flange. In this embodiment, there are four mounting holes 13. The mounting holes 13 are preferably round holes. There are preferably six reinforcing ribs 12. Two reinforcing ribs 12 are provided on each of the two waist surfaces. Two reinforcing ribs 12 are provided on the top surface connecting the two waist surfaces to improve the strength of the external fixation bracket 1.

[0022] like Figure 4 As shown, the inner cavity 21 of the frame includes an upper support cavity 211 and a lower support cavity 212, both of which are triangular. A heavy-duty support rubber block 22 is integrally vulcanized on the upper surface of the upper support cavity 211. The upper support cavity 211 and the lower support cavity 212 are arranged opposite to each other, with the volume of the upper support cavity 211 being smaller than that of the lower support cavity 212. The upper support cavity 211 and the lower support cavity 212 are interconnected, forming a cavity to accommodate the inner support frame 3, and are integrally vulcanized with the inner support frame 3. The heavy-duty support rubber block 22 is rectangular, and its upper surface abuts against the top surface of the outer fixed bracket 1 when the vehicle is heavily loaded.

[0023] like Figure 4 As shown, rubber support arms 23 are integrally vulcanized on the two side walls of the lower support cavity 212. A rectangular rubber connecting plate 231 is integrally provided at the top of each rubber support arm 23, and the rectangular rubber connecting plate 231 is vulcanized together with the two waist surfaces of the external fixing bracket 1. The cross-section of the two rubber support arms 23 is smaller than the cross-section of the rectangular rubber connecting plate 231, and the included angle between the two rubber support arms 23 is between 50° and 90°. The shape of the rectangular rubber connecting plate 231 is adapted to the two waist surfaces of the external fixing bracket 1.

[0024] like Figure 5 As shown, the shape of the inner support frame 3 is adapted to the inner cavity 21 of the frame. The inner support frame 3 includes an upper frame 31 and a lower frame 32, both of which are triangular. The inner support frame 3 has a hollow structure, and its wall thickness is greater than that of the inner cavity 21. The hollow structure of the inner support frame 3 helps to further reduce weight. The upper frame 31 provides support for the heavy-duty support rubber block 22, and the lower frame 32 is used in conjunction with the auxiliary spring 4.

[0025] like Figure 3 As shown, the auxiliary spring 4 includes an auxiliary spring bracket 41 mounted on the axle. A rectangular auxiliary spring rubber 42 is integrally vulcanized on the auxiliary spring bracket 41. The auxiliary spring bracket 41 is fixed to the axle by U-bolts. The upper surface area of ​​the auxiliary spring rubber 42 is larger than the bottom area of ​​the lower support cavity 212.

[0026] Both the external fixing bracket 1 and the internal support frame 3 are cast steel brackets. Cast steel is not only high in strength but also easy to process.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lightweight rubber spring assembly, characterized in that: The system includes a rubber spring mounted on the vehicle frame. The rubber spring includes an outer fixed bracket (1), which is trapezoidal. A rubber main spring (2) is integrally vulcanized on both sides of the outer fixed bracket (1). The rubber main spring (2) has a hollow skeleton cavity (21). A heavy-duty support rubber block (22) is provided above the skeleton cavity (21). Rubber support arms (23) are provided between the left and right walls of the skeleton cavity (21) and the corresponding two sides of the outer fixed bracket (1). The two rubber support arms (23) are inverted V-shapes. An inner support skeleton (3) is integrally vulcanized inside the skeleton cavity (21). The system also includes a secondary spring (4) that is fixedly mounted on the axle and used in conjunction with the rubber spring.

2. The lightweight rubber spring assembly as described in claim 1, characterized in that: The external fixing bracket (1) includes a trapezoidal main fixing surface (11), one side of which is provided with a 90° flange, and a number of reinforcing ribs (12) are provided connecting the main fixing surface (11) and the flange, and a number of mounting holes (13) are provided on the flange.

3. The lightweight rubber spring assembly as described in claim 1, characterized in that: The inner cavity (21) of the skeleton includes an upper support cavity (211) and a lower support cavity (212). Both the upper support cavity (211) and the lower support cavity (212) are triangular. The heavy-duty support rubber block (22) is integrally vulcanized on the upper surface of the upper support cavity (211).

4. The lightweight rubber spring assembly as described in claim 3, characterized in that: The rubber support arm (23) is integrally vulcanized on the two side walls of the lower support cavity (212). The top of the rubber support arm (23) is integrally provided with a rectangular rubber connecting plate (231), and the rectangular rubber connecting plate (231) is vulcanized together with the two waist surfaces of the external fixed bracket (1).

5. The lightweight rubber spring assembly as described in claim 3, characterized in that: The shape of the inner support frame (3) is adapted to the inner cavity (21) of the frame. The inner support frame (3) includes an upper frame (31) and a lower frame (32). Both the upper frame (31) and the lower frame (32) are triangular. The inner support frame (3) has a hollow structure. The wall thickness of the inner support frame (3) is greater than the wall thickness of the inner cavity (21) of the frame.

6. The lightweight rubber spring assembly as described in claim 3, characterized in that: The auxiliary spring (4) includes an auxiliary spring bracket (41) mounted on the axle. A rectangular auxiliary spring rubber (42) is integrally vulcanized on the auxiliary spring bracket (41). The auxiliary spring bracket (41) is fixed to the axle by U-bolts. The upper surface area of ​​the auxiliary spring rubber (42) is larger than the bottom area of ​​the lower support cavity (212).

7. The lightweight rubber spring assembly as described in any one of claims 1 to 6, characterized in that: Both the external fixing bracket (1) and the internal support frame (3) are cast steel brackets.

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