A connecting piece for rear axle bridge tube bottom

Abstract

The utility model belongs to the technical field of rear axle bridge pipe connection, concretely relates to a connecting piece for rear axle bridge pipe bottom, include: leaf spring, it is composed of several alloy spring leafs, rear axle bridge pipe, it is in the braking process and vehicle suspension system cooperation effect, connecting assembly, it is used for fixing rear axle bridge pipe on the leaf spring surface, the utility model discloses through rigid connection and ensures that the load has no loss transmission, effectively restrain the axial rotation of rear axle bridge pipe when high -speed brake, thereby increase the braking effect of vehicle, to prolong its effective brake distance.

Description

Technical Field

[0001] This utility model belongs to the technical field of rear axle tube connection, specifically relating to a connector for the bottom of a rear axle tube. Background Technology

[0002] During braking, the rear axle plays multiple crucial roles. It not only transmits braking force, translating the driver's braking command from pressing the brake pedal into deceleration of the wheels; it also bears the braking torque, ensuring vehicle stability during braking; and simultaneously assists the parking brake system in ensuring reliable parking after the vehicle has come to a complete stop. The rear axle is equipped with braking devices. When the driver presses the brake pedal, the braking system transmits braking force to the brakes on the rear axle, which then act on the rear wheels, causing them to decelerate or stop rotating. In this process, the rear axle, as the key hub for transmitting braking force, ensures that the braking force is applied accurately and promptly to the wheels, achieving smooth deceleration or stopping of the vehicle.

[0003] Typically, the rear axle tube is directly fixed to the leaf spring using U-bolts. During high-speed braking, the rear axle itself may rotate slightly due to the braking torque. This rotation can cause a slight deviation in the transmission of braking force, thus affecting the vehicle's braking efficiency and increasing the effective braking distance. In existing technology, some have proposed replacing the round rear axle tube with a square one to suppress this rotation. However, square tubes suffer from stress concentration issues, resulting in a significant decrease in load-bearing capacity and compressive strength compared to round tubes. Furthermore, the manufacturing process for square tubes is more complex, leading to a significant increase in production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a connector for the bottom of a rear axle tube, including:

[0005] A leaf spring is composed of several alloy spring plates;

[0006] The rear axle tube works in conjunction with the vehicle's suspension system during braking.

[0007] A connecting assembly for securing the rear axle tube to the surface of the leaf spring.

[0008] Preferably, the connecting assembly includes a bridge tube bottom connector, a square screw, and a five-hole pressure plate;

[0009] The bottom connector of the bridge tube is divided into a contact surface and a fixing surface. The contact surface is an arc-shaped surface that matches the arc of the rear axle tube surface. The fixing surface has two fixing limiting grooves of the same size, and the shape and arc of the fixing limiting grooves match the square screw.

[0010] The bottom connector of the bridge tube has a square hole that runs through the front and back.

[0011] Preferably, the square screw passes sequentially through the bottom connector of the bridge tube, the rear axle tube, and both sides of the leaf spring, and is tightened in conjunction with the five-hole pressure plate.

[0012] Preferably, a leaf spring support pad is provided between the rear axle tube and the leaf spring, the bottom of the leaf spring support pad is in close contact with the surface of the leaf spring, and the top is provided with an arc-shaped groove that fits with the rear axle tube.

[0013] The beneficial effects of this utility model are:

[0014] By tightly fitting the bottom connector of the axle tube to the rear axle tube in the connecting assembly, and by having square screws sequentially pass through the bottom connector, the rear axle tube, and both sides of the leaf spring, and then tighten them with a five-hole pressure plate, this multi-component tight connection forms a stable overall structure. This avoids the rear axle tube from rotating due to uneven contact surfaces or gaps, thus preventing brake force dispersion and energy loss. It ensures the integrity and stability of brake force transmission, allowing the braking system to respond more quickly to braking commands, improving braking efficiency, and extending the effective braking distance.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0019] Figure 2 This is an installation diagram of the rear axle tube according to an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the fixing surface of the bottom connector of the bridge tube according to an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the mating surface of the bottom connector of the bridge tube according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Leaf spring, 2. Rear axle tube, 3. Connecting assembly, 4. Bottom connector of axle tube, 5. Square screw, 6. Five-hole pressure plate, 7. Fitting surface, 8. Fixing surface, 9. Fixing and limiting groove, 10. Square hole, 11. Leaf spring support pad, 12. Arc groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] like Figures 1 to 4 As shown, this embodiment provides a connector for the bottom of a rear axle tube, including:

[0026] Leaf spring 1, which consists of several alloy spring plates; rear axle tube 2, which works in conjunction with the vehicle suspension system during braking; connecting assembly 3, which is used to fix the rear axle tube 2 to the surface of leaf spring 1.

[0027] The connecting assembly 3 includes a bridge tube bottom connector 4, a square screw 5, and a five-hole pressure plate 6. The bridge tube bottom connector 4 has a mating surface 7 and a fixing surface 8. The mating surface 7 is an arc-shaped surface that matches the arc of the rear axle tube 2. The fixing surface 8 has two identical fixing grooves 9, the shape and arc of which match the square screw 5. The bridge tube bottom connector 4 has a through square hole 10. The square hole 10 increases the heat dissipation between components and also reduces the contact area between the mating surface 7 and the rear axle tube 2, thereby increasing the pressure applied to the surface of the rear axle tube 2 and enhancing the overall tightness of the installation. The square screw 5 passes sequentially through the bridge tube bottom connector 4, the rear axle tube 2, and both sides of the leaf spring 1, and is tightened in conjunction with the five-hole pressure plate 6. This tight connection of multiple components forms a stable overall structure. This design avoids the dispersion and energy loss of braking force caused by uneven contact surfaces or gaps, ensuring the integrity and stability of braking force transmission. This allows the braking system to respond more quickly to braking commands, improving braking efficiency. During braking, the vehicle generates significant inertial force and braking torque. A stable connection prevents displacement or loosening of the rear axle tube relative to the leaf spring, ensuring that braking force is always accurately transmitted to the wheels along the predetermined path. This avoids braking force deviation caused by unstable connections, thereby improving braking accuracy and reliability.

[0028] A leaf spring support pad 11 is also provided between the rear axle tube 2 and the leaf spring 1. The bottom of the leaf spring support pad 11 is in close contact with the surface of the leaf spring 1, and the top has an arc-shaped groove 12 that fits with the rear axle tube 2. This structure further enhances the tight connection between the rear axle tube 2 and the leaf spring 1. During braking, the leaf spring support pad 11 and the connecting assembly 3 work together to form a cooperative structural system, which can better bear and distribute the load generated by braking, so that the rear axle can maintain a stable geometric shape and relative position during braking.

[0029] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0030] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A connector for the bottom of a rear axle tube, characterized in that, include: A leaf spring (1) is composed of several alloy spring plates; The rear axle tube (2) works in conjunction with the vehicle suspension system during braking; A connecting assembly (3) is used to fix the rear axle tube (2) to the surface of the leaf spring (1).

2. The connector for the bottom of the rear axle tube according to claim 1, characterized in that: The connecting assembly (3) includes a bridge tube bottom connector (4), a square screw (5), and a five-hole pressure plate (6). The bottom connector (4) of the bridge tube is divided into a contact surface (7) and a fixing surface (8). The contact surface (7) is an arc-shaped surface that matches the arc of the rear axle tube (2). The fixing surface (8) has two fixing grooves (9) of the same size. The shape and arc of the fixing groove (9) match the square screw (5). The bottom connector (4) of the bridge tube has a square hole (10) that runs through the front and back.

3. The connector for the bottom of the rear axle tube according to claim 2, characterized in that: The square screw (5) passes through the bottom connector (4) of the bridge tube, the rear bridge tube (2) and the leaf spring (1) in sequence, and is tightened in conjunction with the five-hole pressure plate (6).

4. The connector for the bottom of the rear axle tube according to claim 3, characterized in that: A leaf spring support pad (11) is also provided between the rear axle tube (2) and the leaf spring (1). The bottom of the leaf spring support pad (11) is in close contact with the surface of the leaf spring (1), and the top is provided with an arc-shaped groove (12) that matches the rear axle tube (2).

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