A composite u-shaped clevis leaf spring assembly for a vehicle

Abstract

The utility model discloses an automobile composite material U type clamping plate plate spring, including body, upper clamping plate, lower clamping plate, upper end clamping and lower end clamping, the body is specifically flat board, and the lower drawing is the plate spring of flat state, but the actual free state plate spring is parabolic, the upper clamping plate is specifically inverted U type board, and the lower clamping plate is specifically U type board, and the upper clamping plate, body and lower clamping plate are sequentially fixedly connected through the adhesion mode, be provided with the upper wear plate between the upper clamping plate and the body, be provided with the lower wear plate between the lower clamping plate and the body, the upper end clamping is specifically inverted U type board, and the lower end clamping is specifically rectangular flat, actually not arc, and the bottom surface is close to the position of end part and has a big chamfer, and the upper end clamping, body and lower end clamping are sequentially fixedly connected through lock bolt, compared with prior art, the automobile composite material U type clamping plate plate spring assembly in this embodiment can effectively reduce the plate spring weight.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a composite material U-shaped leaf spring assembly for automobiles. Background Technology

[0002] Lightweighting of automobiles is a current trend in automotive development. Lightweighting can not only reduce fuel consumption and pollution, but also endow automobiles with other properties, which can help improve the acceleration and control stability of automobiles, and have a positive effect on reducing automobile noise, vibration, inertia during collisions and braking distance.

[0003] Automotive leaf springs are the most traditional elastic element in automotive suspension systems. They are typically composed of several alloy spring steel leaves of unequal length, forming a spring beam of approximately equal strength. In addition to their cushioning function, when mounted longitudinally in the suspension system and hinged at one end to the chassis, they transmit forces and torques in all directions and determine the trajectory of the wheels, thus acting as a guide. Therefore, there is no need for other guiding mechanisms. Furthermore, since automotive leaf springs are composed of multiple stacked leaves, when deformed under load, the leaves slide relative to each other, generating friction and producing resistance, which helps to dampen vehicle vibrations. Therefore, this structure eliminates the need for shock absorbers.

[0004] However, the current leaf spring material is alloy steel, which has low material utilization and is heavy, accounting for 8 to 9% of the car's weight.

[0005] In view of this, there is a lack of lightweight automotive leaf springs in the existing technology. Utility Model Content

[0006] The purpose of this utility model embodiment is to provide a lightweight automotive composite material U-shaped leaf spring assembly to overcome the shortcomings of the prior art. The specific technical solution is as follows:

[0007] A composite material U-shaped leaf spring assembly for automobiles includes a body, an upper clamping plate, a lower clamping plate, an upper end clamp, and a lower end clamp;

[0008] The body is specifically a flat plate;

[0009] The upper clamping plate is specifically an inverted U-shaped plate, and the lower clamping plate is specifically a U-shaped plate. The upper clamping plate, the body, and the lower clamping plate are sequentially fixedly connected by adhesive bonding.

[0010] An upper wear-resistant plate is provided between the upper clamping plate and the body, and a lower wear-resistant plate is provided between the lower clamping plate and the body;

[0011] The upper clamp is specifically an inverted U-shaped plate, and the lower clamp is specifically a rectangular flat plate. The upper clamp, the body, and the lower clamp are sequentially fixedly connected by locking bolts.

[0012] The main body is made of glass fiber reinforced epoxy resin / polyurethane resin material and is manufactured by prepreg compression molding (PCM) process.

[0013] Optionally, the upper clamp and the lower clamp are located in the middle of the body, and the upper end clamp and the lower end clamp are located at both ends of the body.

[0014] Optionally, the number of locking bolts is specifically four.

[0015] Optionally, the body is specifically a flat plate with a uniform cross-sectional area to facilitate the forming process.

[0016] Compared with existing technologies, the automotive composite material U-shaped leaf spring assembly in this embodiment is made of glass fiber reinforced epoxy resin / polyurethane resin, which can effectively reduce the weight of the leaf spring. Furthermore, in this embodiment, the upper wear-resistant plate between the upper clamping plate and the body, and the lower wear-resistant plate between the lower clamping plate and the body, can effectively increase the service life and strength of the leaf spring. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of an embodiment of the automotive composite material U-shaped leaf spring assembly provided by this utility model;

[0019] Figure 2 This is a top view structural schematic diagram of an embodiment of the automotive composite material U-shaped leaf spring assembly provided by this utility model.

[0020] Figure 3 This is a partial structural schematic diagram of an embodiment of the automotive composite material U-shaped leaf spring assembly provided by this utility model.

[0021] in, Figures 1 to 3 The correspondence between the component names and their corresponding reference numerals in the figures is as follows:

[0022] 1. Body, 2. Upper clamping plate, 3. Lower clamping plate, 4. Upper end clamp, 5. Lower end clamp, 6. Upper wear-resistant plate, 7. Lower wear-resistant plate, 8. Locking bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that in this embodiment, the directional terms "up" and "down," "left" and "right" are based on... Figure 1 The position of the U-shaped leaf spring assembly of the automotive composite material shown in the embodiment is defined based on the position of the leaf spring.

[0025] To understand the specific structure of the automotive composite material U-shaped leaf spring assembly in this embodiment, please refer to the following: Figures 1 to 3 . Figure 1 A schematic diagram of an embodiment of the automotive composite material U-shaped leaf spring assembly provided by this utility model; Figure 2 This is a top view structural schematic diagram of an embodiment of the automotive composite material U-shaped leaf spring assembly provided by this utility model; Figure 3 This is a partial structural schematic diagram of an embodiment of the automotive composite material U-shaped leaf spring assembly provided by this utility model. Figures 1 to 3 As shown, the automotive composite material U-shaped leaf spring assembly provided in this embodiment includes a body 1, an upper clamping plate 2, a lower clamping plate 3, an upper clamp 4, and a lower clamp 5. The body 1 is specifically a flat plate, the upper clamping plate 2 is specifically an inverted U-shaped plate, and the lower clamping plate 3 is specifically a U-shaped plate. The upper clamping plate 2, the body 1, and the lower clamping plate 4 are sequentially fixedly connected by adhesive bonding. An upper wear-resistant plate 6 is provided between the upper clamping plate 2 and the body 1, and a lower wear-resistant plate 7 is provided between the lower clamping plate 3 and the body 1. The upper clamp 4 is specifically an inverted U-shaped plate, and the lower clamp 5 is specifically a rectangular flat plate. The upper clamp 4, the body 1, and the lower clamp 5 are sequentially fixedly connected by locking bolts.

[0026] The main body 1 is made of glass fiber reinforced epoxy resin / polyurethane resin material and is manufactured by prepreg compression molding (PCM) process.

[0027] Specifically, in this embodiment, the body 1, upper clamping plate 2, lower clamping plate 3, upper end clamp 4, and lower end clamp 5 are all manufactured using PCM technology. PCM uses equipment pressure as the main force to cure and impregnate fiber strips and fiber fabrics through a mold, continuously manufacturing composite leaf springs with different cross-sectional shapes. This can meet the current production needs of leaf springs with different cross-sections. The products are dense, have a smooth surface, and excellent performance, which is convenient for the subsequent industrial production of automotive products.

[0028] Preferably, to facilitate the forming process, the body 1 is a flat plate with a uniform cross-sectional area, that is, the longitudinal cross-sectional area of ​​the body 1 is the same everywhere.

[0029] Specifically, in this embodiment, the upper clamping plate 2 and the lower clamping plate 3 are located in the middle of the body 1, and the upper end clamp 4 and the lower end clamp 5 are located at both ends of the body 1. See also Figure 1 After the upper clamping plate 2 and the lower clamping plate 3 are fixedly connected to the body 1 by adhesive bonding, the central axis of symmetry of the body 1 coincides with the central axis of symmetry of the upper clamping plate 2 and the lower clamping plate 3. More specifically, in this embodiment, the length of the upper clamping plate 2 is 220-230mm, currently 300mm, and the length of the lower clamping plate 3 is 260-270mm, currently 300mm.

[0030] join Figure 2 In this embodiment, the number of locking bolts 8 that fix the upper clamp 4, the body 1 and the lower clamp 5 is specifically four, with two evenly distributed at each of the left and right ends of the body 1. The locking bolts 8 are specifically bolts and nuts. After the bolts pass through the lower clamp 5, the body 1 and the upper clamp 4 in sequence, the bolts are locked with nuts to achieve a fixed connection between the upper clamp 4, the body 1 and the lower clamp 5. Preferably, in order to further increase the connection strength between the upper clamp 4, the body 1 and the lower clamp 5, both adhesive bonding and locking nuts can be used for the fixed connection.

[0031] In this embodiment, the upper clamping plate 2, the body 1, and the lower clamping plate 3 are fixedly connected by an adhesive method, specifically using leaf adhesive. To further increase the connection strength between the upper clamping plate 2 and the body 1, and between the body 1 and the lower clamping plate 3, an upper positioning hole can be provided on the upper clamping plate 2, and an upper positioning pin can be installed to connect the upper clamping plate 2 and the body 1. A lower positioning hole is provided on the lower clamping plate 3, and a lower positioning pin can be installed to connect the body 1 and the lower clamping plate 3. Specifically, there is one upper positioning pin and one lower positioning pin, and the upper positioning hole and the lower positioning hole are distributed at the center of the upper clamping plate 2 and the lower clamping plate 3.

[0032] Compared with existing technologies, the overall body of the automotive composite U-shaped leaf spring in this embodiment is made of glass fiber reinforced epoxy resin / polyurethane resin, which can reduce weight by 50%-60% compared with metal leaf springs, effectively reducing the weight of the leaf spring. Furthermore, in this embodiment, the upper wear-resistant plate between the upper clamping plate and the body, and the lower wear-resistant plate between the lower clamping plate and the body, can effectively increase the service life and strength of the leaf spring.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A composite material U-shaped leaf spring assembly for automobiles, characterized in that, It includes a main body (1), an upper clamping plate (2), a lower clamping plate (3), an upper end clamp (4), and a lower end clamp (5); The body (1) is specifically a flat plate; The upper clamping plate (2) is specifically an inverted U-shaped plate, and the lower clamping plate (3) is specifically a U-shaped plate. The upper clamping plate (2), the body (1), and the lower clamping plate (3) are fixedly connected in sequence by adhesive bonding. An upper wear-resistant plate (6) is provided between the upper clamping plate (2) and the body (1), and a lower wear-resistant plate (7) is provided between the lower clamping plate (3) and the body (1); The upper clamp (4) is specifically an inverted U-shaped plate, and the lower clamp (5) is specifically a rectangular plate. The upper clamp (4), the body (1), and the lower clamp (5) are sequentially fixedly connected by locking bolts (8).

2. The automotive composite material U-shaped leaf spring assembly according to claim 1, characterized in that, The upper clamp (2) and the lower clamp (3) are located in the middle of the body (1), and the upper clamp (4) and the lower clamp (5) are located at both ends of the body (1).

3. The automotive composite material U-shaped leaf spring assembly according to claim 2, characterized in that, The number of the locking bolts (8) is specifically 4.

4. The automotive composite material U-shaped leaf spring assembly according to claim 3, characterized in that, The main body (1) is specifically a flat plate with equal cross-sectional area to facilitate the forming process.

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