Rear axle shell

Abstract

The utility model discloses a rear axle shell, which relates to the technical field of automobile rear axles, and comprises an upper shell and a lower shell which are connected with each other, both the upper shell and the lower shell are provided with hemispherical bulges, and the lower shell is provided with a reinforcing plate connected with the hemispherical bulges. The strength of the whole lower shell is improved through the reinforcing plates arranged on the hemispherical protrusions, the strength of the whole rear axle shell formed by combining the upper shell and the lower shell is improved, and therefore the whole rear axle shell is large in structural rigidity, not prone to deformation, good in impact load resistance, large in bearing capacity and high in reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile rear axles, in particular to a rear axle housing. Background Art

[0002] The rear axle housing is composed of two half-bridge housings and a spherical housing welded together. In addition to driving, decelerating and differential functions, the driven rear axle also has a load-bearing function. The rear axle housing is the main load-bearing component that bears the entire rear axle load. When the vehicle is running, it also has to withstand supporting force, traction, braking force, and lateral force.

[0003] Currently on the market, the rear axle housing is mainly welded from a middle spherical shell and tubular half-bridge shells on both sides. In order to meet the shear force requirements, high welding quality requirements are required. Affected by the freight market environment, vehicles are usually fully loaded or occasionally overloaded, and the rear axle load is large. Under the impact load of the ground, the rear axle is prone to deformation, weld opening, or even breakage, resulting in installation and throwing failures.

[0004] For example, publication number CN218505587U, published on February 21, 2023, discloses a novel rear axle belonging to the field of automotive parts production technology. The rear axle housing includes a reducer housing and half-axle constant velocity ball cages disposed on both radial sides of the reducer housing. A suspension bracket assembly is disposed at the axle tube between the reducer housing and the two half-axle constant velocity ball cages, and a steering gear bracket is disposed at the front end of the reducer housing. The suspension bracket assembly is connected to the vehicle suspension system via bolts, and the steering gear bracket is connected to the vehicle steering gear via bolts. The aforementioned rear axle structure disclosed above has a high structural load, low structural strength, and is prone to deformation during use, resulting in poor practicality. Summary of the Invention

[0005] The purpose of the utility model is to provide a rear axle housing with a simple structure, high structural rigidity, strong load-bearing capacity and high reliability. The utility model increases the strength of the entire rear axle housing by providing a reinforcing plate on the hemispherical protrusion, thereby achieving the above-mentioned purpose.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve its technical problems is: a rear axle housing, comprising an upper housing and a lower housing connected to each other, both the upper housing and the lower housing being provided with a hemispherical protrusion, and the lower housing being provided with a reinforcing plate connected to the hemispherical protrusion.

[0007] The reinforcing plate is arranged at the connection between the lower shell and the hemispherical protrusion.

[0008] The connection between the lower shell and the hemispherical protrusion is provided with an arc transition, and the contact surface between the reinforcing plate, the lower shell and the hemispherical protrusion is provided with an arc.

[0009] The reinforcing plate is provided with a liquid leakage hole.

[0010] A first connecting plate and a second connecting plate are provided in the hemispherical protrusion. Two ends of the first connecting plate are welded to the upper shell and the lower shell respectively. Two ends of the second connecting plate are welded to the upper shell and the lower shell respectively.

[0011] The first connecting plate and the second connecting plate are arranged opposite to each other, and a curvature is provided on one side of the first connecting plate and the second connecting plate which are close to each other.

[0012] The reinforcing plate is an arc-shaped plate.

[0013] A dust cover is provided on the hemispherical protrusion.

[0014] The upper shell and the lower shell are both integral stamped and bent plate parts.

[0015] The beneficial effects of the utility model are:

[0016] The reinforcement plate provided on the hemispherical protrusion increases the strength of the entire lower housing, and thus increases the strength of the entire rear axle housing composed of the upper and lower housings. This results in the entire rear axle housing having high structural rigidity, being less prone to deformation, having good impact load resistance, high bearing capacity, and high reliability. Both the upper and lower housings are integrally formed from stamped and bent sheet metal, giving the entire rear axle housing high impact and shear resistance.

[0017] A leakage hole is provided on the reinforcing plate to prevent condensation water or rainwater from being retained on the inner wall of the reinforcing plate to avoid corrosion; the connection strength between the two hemispherical protrusions is increased by the first connecting plate and the second connecting plate, thereby increasing the strength of the entire shell; a dust cover is provided on the hemispherical protrusion to improve the assembly efficiency of the rear axle shell and prevent gear oil from leaking out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the rear axle housing of the present utility model.

[0019] Figure 2 for Figure 1 Exploded view of the rear axle housing.

[0020] In the accompanying drawings: 1-upper shell, 2-lower shell, 3-reinforcement plate, 4-dust cover, 5-leakage hole, 6-hemispherical protrusion, 7-first connecting plate, 8-second connecting plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0023] like Figure 1-2 As shown, the rear axle housing includes an upper housing 1 and a lower housing 2 connected to each other. Both the upper housing 1 and the lower housing 2 are provided with a hemispherical protrusion 6. The two hemispherical protrusions 6 are combined into a whole, thereby adapting to the rear axle structure of the automobile. The lower housing 2 is provided with a reinforcing plate 3 connected to the hemispherical protrusion 6. There are two reinforcing plates 3, which are symmetrically welded on both sides of the hemispherical protrusion 6 on the lower side of the lower housing 2.

[0024] By providing the reinforcing plate 3 on the hemispherical protrusion 6, the strength of the entire lower shell 2 is increased, and the strength of the entire rear axle shell composed of the upper shell 1 and the lower shell 2 is increased, thereby making the entire rear axle shell have high structural rigidity, not easy to deform, good impact load resistance, large bearing capacity and high reliability.

[0025] Specifically, the reinforcing plate 3 is provided at the connection between the lower shell 2 and the hemispherical protrusion 6 , thereby increasing the strength of the connection between the lower shell 2 and the hemispherical protrusion 6 .

[0026] The connection between the lower shell 2 and the hemispherical protrusion 6 is provided with an arc transition, and the contact surface between the reinforcing plate 3 and the lower shell 2 and the hemispherical protrusion 6 is provided with an arc, so as to achieve smooth contact between the reinforcing plate 3 and the lower shell 2 and the hemispherical protrusion 6, thereby enabling the reinforcing plate 3 to perform the reinforcement work stably.

[0027] The reinforcing plate 3 is provided with a leakage hole 5 to prevent condensation water or rainwater from being retained on the inner wall of the reinforcing plate 3 to avoid corrosion.

[0028] A first connecting plate 7 and a second connecting plate 8 are provided in the hemispherical protrusion 6. The two ends of the first connecting plate 7 are welded to the upper shell 1 and the lower shell 2 respectively, and the two ends of the second connecting plate 8 are welded to the upper shell 1 and the lower shell 2 respectively. The first connecting plate 7 and the second connecting plate 8 are used to increase the connection strength between the two hemispherical protrusions 6, thereby increasing the strength of the entire shell. Specifically, two first connecting plates 7 are provided and two second connecting plates 8 are provided.

[0029] The first connecting plate 7 and the second connecting plate 8 are arranged opposite to each other, and a curvature is provided on the side where the first connecting plate 7 and the second connecting plate 8 are close to each other, thereby ensuring that the first connecting plate 7 and the second connecting plate 8 are adapted to the rear axle structure in the housing.

[0030] The reinforcing plate 3 is an arc-shaped plate, which increases the load-bearing capacity of the rear axle housing, increases the structural rigidity and reduces deformation.

[0031] A dust cover 4 is provided on the hemispherical protrusion 6 to improve the assembly efficiency of the rear axle housing and prevent the gear oil from leaking out. Specifically, the dust cover 4 is welded to the rear end surface of the hemispherical protrusion 6 .

[0032] The upper shell 1 and the lower shell 2 are both integral stamped and bent plate parts, so that the entire rear axle shell has high impact resistance and shear resistance.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rear axle housing, characterized in that: The invention comprises an upper shell (1) and a lower shell (2) connected to each other, wherein the upper shell (1) and the lower shell (2) are both provided with a hemispherical protrusion (6), and the lower shell (2) is provided with a reinforcing plate (3) connected to the hemispherical protrusion (6); a first connecting plate (7) and a second connecting plate (8) are provided in the hemispherical protrusion (6), and the two ends of the first connecting plate (7) are respectively welded to the upper shell (1) and the lower shell (2), and the two ends of the second connecting plate (8) are respectively welded to the upper shell (1) and the lower shell (2).

2. The rear axle housing according to claim 1, characterized in that: The reinforcing plate (3) is arranged at the connection between the lower shell (2) and the hemispherical protrusion (6).

3. The rear axle housing according to claim 2, characterized in that: The connection between the lower shell (2) and the hemispherical protrusion (6) is provided with an arc transition, and the contact surface between the reinforcing plate (3), the lower shell (2) and the hemispherical protrusion (6) is provided with an arc.

4. The rear axle housing according to claim 3, characterized in that: The reinforcing plate (3) is provided with a liquid leakage hole (5).

5. The rear axle housing according to any one of claims 1 to 4, characterized in that: The first connecting plate (7) and the second connecting plate (8) are arranged opposite to each other, and a curvature is provided on the side where the first connecting plate (7) and the second connecting plate (8) are close to each other.

6. The rear axle housing according to claim 5, characterized in that: The reinforcing plate (3) is an arc-shaped plate.

7. The rear axle housing according to claim 6, characterized in that: A dust cover (4) is provided on the hemispherical protrusion (6).

8. The rear axle housing according to claim 7, characterized in that: The upper shell (1) and the lower shell (2) are both integral stamped and bent plate parts.

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