Improved automobile rear axle shaft bearing seat

Abstract

The utility model relates to the technical field of automobile part machining, and discloses an improved automobile rear axle shaft bearing seat which comprises a base, a screw penetrates through a connecting part to establish an axial pre-tightening force transmission path, a nut applies thread locking force to ensure that all the parts are tightly attached, and the base is fixedly connected with the screw. The end cover covers the fastening part to prevent foreign matters from invading and reduce the risk of thread loosening; and the anti-slip ring inhibits the radial movement of the bearing through a high-friction interface and allows thermal expansion deformation at the same time. According to the improved automobile rear axle half-shaft bearing seat, efficient clamping and locking are achieved through cooperation of the connecting rod below the base and the double clamping blocks and a spring structure, fixation can be automatically completed only by aligning and pressing during installation, the assembly time is greatly shortened, and the operation difficulty is reduced; and meanwhile, a double-locking mechanism formed by the push plate and the spring can effectively absorb vibration energy in the running process of the vehicle, and connection looseness or displacement caused by long-term bumping is avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically to an improved automotive rear axle half-shaft bearing housing. Background Technology

[0002] The rear axle half-shaft bearing housing is one of the core components of a vehicle's power transmission system. It is mainly used to support the rear axle half-shaft bearing and transmit torque between the wheels and the differential. Through its rigid connection with the half-shaft and axle housing, it can withstand the radial and axial loads generated during vehicle operation, and it also needs to be able to resist impact vibrations under complex road conditions.

[0003] Traditional bearing housings typically employ a multi-bolt fixing structure. During installation, precise alignment of the bearing outer ring with the housing bore is required, and multiple bolts must be tightened in stages to create a uniform preload. This process relies on specialized tools and multiple personnel, is time-consuming, and demands a high level of skill from the operators. Furthermore, traditional designs lack a dynamic locking compensation mechanism, which can lead to bolt preload attenuation due to vibration after prolonged use. This can cause bearing movement or housing displacement, affecting the stability of the transmission system. Additionally, lubrication and maintenance require the removal of end caps or seals, further increasing maintenance complexity and time costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this utility model is to provide an improved automotive rear axle half-shaft bearing housing to solve the problem of the cumbersome installation of traditional automotive rear axle half-shaft bearing housings mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an improved automotive rear axle half-shaft bearing housing, comprising a base, a bearing fixing bracket fixedly mounted on the upper end of the base, connecting plates fixedly mounted on the left and right ends of the bearing fixing bracket, a screw fixedly mounted on the upper end of the base, the screw passing through the connecting plates and fixed by a nut, an end cap fixedly mounted on the upper end of the nut, and anti-slip rings fixedly mounted inside the bearing fixing bracket and the base. The base is connected to the vehicle body through a fixing mechanism. The base serves as the load-bearing foundation of the overall structure, rigidly connected to the vehicle body to form a stable support frame. The bearing fixing bracket is used to accommodate and constrain the movement of the bearing outer ring. The connecting plate provides a lateral fixing fulcrum to achieve multi-directional force balance. The screw passes through the connecting part to establish an axial preload transmission path. The nut applies threaded locking force to ensure tight fit of all components. The end cap covers the fastening part to prevent foreign object intrusion and reduce the risk of thread loosening. The anti-slip ring inhibits radial movement of the bearing through a high-friction interface while allowing thermal expansion deformation.

[0008] Preferably, the fixing mechanism includes a rear axle housing, the lower end of the base is fixedly provided with the rear axle housing, and the upper end of the rear axle housing is fixedly provided with a connecting rod. The rear axle housing serves as a connecting carrier for the vehicle chassis to effectively transfer the load to the frame, and the connecting rod constructs a vertical installation guide channel.

[0009] Preferably, a first locking block is movably provided at the upper end of the connecting rod, and a second locking block is movably provided at the upper end of the connecting rod. The first locking block and the second locking block form a bidirectional interlocking mechanism to achieve quick locking.

[0010] Preferably, a limit end is fixedly provided at the lower end of the first and second card blocks, and a first spring is fixedly provided between the first and second card blocks. The limit end controls the stroke range of the card blocks to avoid overload failure, and the first spring provides the card blocks with a reset elastic force to maintain the dynamic clamping state.

[0011] Preferably, the base has a fixed movable groove inside, a push plate is movably disposed inside the movable groove, and a second spring is fixedly disposed between the push plate and the movable groove. The movable groove provides deformation space for the locking mechanism and guides the movement trajectory. The push plate applies continuous clamping force through planar contact to enhance connection stability, and the second spring generates a reverse force to compensate for gap changes caused by vibration.

[0012] Preferably, an oil injection hole is fixedly provided inside the bearing bracket, and a sealing plug is fixedly provided at the upper end of the oil injection hole. The oil injection hole establishes a lubrication channel to facilitate grease replenishment and extend bearing life, while the sealing plug isolates external contaminants and maintains the airtightness of the lubrication system.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This improved automotive rear axle half-shaft bearing housing achieves efficient locking and clamping through the connecting rod under the base and the double locking block and spring structure. During installation, it can be automatically fixed by simply aligning and pressing, which greatly shortens the assembly time and reduces the difficulty of operation. At the same time, the double locking mechanism formed by the push plate and the spring can effectively absorb the vibration energy during vehicle operation and avoid loosening or displacement of the connection due to long-term bumps.

[0015] 2. The improved automotive rear axle half-shaft bearing housing has a dynamic compensation mechanism formed by the push plate in the movable groove and the limiting end. When subjected to impact load, the force is attenuated by the elastic deformation of the spring system. Combined with the composite fixing method of the anti-slip ring and the bearing bracket, the device can maintain stable positioning accuracy and fatigue resistance under complex working conditions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the automobile rear axle half-shaft bearing housing of this utility model;

[0017] Figure 2 This is an exploded view of the rear axle bearing housing of an automobile according to this utility model.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the automobile rear axle half-shaft bearing housing of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the fixing mechanism of this utility model.

[0020] In the diagram: 1. Base; 2. Bearing bracket; 3. Connecting plate; 4. Nut; 5. Screw; 6. End cap; 7. Anti-slip ring; 8. Rear axle housing; 9. Connecting rod; 10. First locking block; 11. Second locking block; 12. Limiting end; 13. First spring; 14. Movable groove; 15. Push plate; 16. Second spring; 17. Oil injection hole; 18. Sealing plug. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4 This utility model provides a technical solution: an improved automotive rear axle half-shaft bearing housing, which includes a base 1, a bearing fixing bracket 2 fixedly mounted on the upper end of the base 1, connecting plates 3 fixedly mounted on the left and right ends of the bearing fixing bracket 2, a screw 5 fixedly mounted on the upper end of the base 1, the screw 5 passing through the connecting plates 3 and fixed by a nut 4, an end cap 6 fixedly mounted on the upper end of the nut 4, and an anti-slip ring 7 fixedly mounted inside the bearing fixing bracket 2 and the base 1. The base 1 is connected to the vehicle body through a fixing mechanism. The base 1 serves as an integral support frame and is rigidly connected to the vehicle body, providing a load-bearing foundation. The bearing fixing bracket 2 is used to wrap and fix the outer ring of the bearing to form a constraint space. The connecting plate 3 transmits multi-directional loads through lateral fulcrums to balance the force. The screw 5 passes through the connection part to establish an axial preload transmission path. The nut 4 applies threaded locking force to ensure that all components fit tightly. The end cap 6 covers the nut 4 to prevent the intrusion of external foreign objects and reduce the risk of loosening. The anti-slip ring 7 inhibits the radial movement of the bearing through a high-friction interface while allowing thermal expansion deformation.

[0023] The fixing mechanism includes a rear axle housing 8. The rear axle housing 8 is fixedly installed at the lower end of the base 1. A connecting rod 9 is fixedly installed at the upper end of the rear axle housing 8. A first locking block 10 is movably installed at the upper end of the connecting rod 9. A second locking block 11 is movably installed at the upper end of the connecting rod 9. The rear axle housing 8 serves as a transitional connection carrier between the vehicle body and the base 1 to achieve load transfer. The connecting rod 9 constructs a vertical installation guide channel and supports the locking mechanism. The first locking block 10 and the second locking block 11 achieve rapid locking and locking through bidirectional interlocking action.

[0024] The lower ends of the first locking block 10 and the second locking block 11 are fixedly provided with limiting ends 12. A first spring 13 is fixedly provided between the first locking block 10 and the second locking block 11. A movable groove 14 is fixedly provided inside the base 1. A push plate 15 is movably provided inside the movable groove 14. A second spring 16 is fixedly provided between the push plate 15 and the movable groove 14. An oil injection hole 17 is fixedly provided inside the bearing fixing bracket 2. A sealing plug 18 is fixedly provided at the upper end of the oil injection hole 17. The limiting end 12 restricts the movement stroke of the locking block to avoid overload separation. The first spring 13 provides a reset elastic force for the locking block to maintain the dynamic clamping state. The movable groove 14 reserves deformation space for the retraction of the locking block and the movement of the push plate 15 and guides the movement trajectory. The push plate 15 applies a continuous pressing force downward through planar contact to enhance locking stability. The second spring 16 generates a reverse elastic force to compensate for the gap change caused by vibration. The oil injection hole 17 establishes a lubricating grease injection channel to extend the service life of the bearing. The sealing plug 18 seals the oil injection hole 17 to isolate external contaminants and maintain the cleanliness of the lubrication system.

[0025] Working principle: Quick installation is achieved through the fixing mechanism between the base 1 and the rear axle housing 8. During installation, the hole at the bottom of the base 1 is aligned with the first locking block 10 and the second locking block 11 at the upper end of the connecting rod 9 and pressed down. At this time, the first locking block 10 and the second locking block 11 are squeezed inward and compress the first spring 13. When the limiting end 12 reaches the position of the movable groove 14, the first spring 13 rebounds, causing the first locking block 10 and the second locking block 11 to unfold outward and complete the locking. At the same time, the push plate 15 presses down against the limiting end 12 under the elastic force of the second spring 16 to form a double lock, effectively preventing the connection from loosening. The bearing fixing bracket 2 passes through the connecting plate 3 through the screw 5 and is fastened by the nut 4. The end cover 6 covers the nut 4 to improve protection. The anti-slip ring 7 fits tightly against the outer ring of the bearing to enhance radial fixation. The oil injection hole 17 cooperates with the sealing plug 18 to achieve lubrication and maintenance.

[0026] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. An improved automotive rear axle half shaft bearing seat comprising a base (1), characterised in that: A bearing mounting bracket (2) is fixedly installed at the upper end of the base (1). A connecting plate (3) is fixedly installed at both ends of the bearing mounting bracket (2). A screw (5) is fixedly installed at the upper end of the base (1). The screw (5) passes through the connecting plate (3) and is fixed by a nut (4). An end cap (6) is fixedly installed at the upper end of the nut (4). Anti-slip rings (7) are fixedly installed inside the bearing mounting bracket (2) and the base (1). The base (1) is connected to the vehicle body through a fixing mechanism.

2. The improved automobile rear axle half shaft bearing seat according to claim 1, characterized in that: The fixing mechanism includes a rear axle housing (8), the lower end of the base (1) is fixedly provided with the rear axle housing (8), and the upper end of the rear axle housing (8) is fixedly provided with a connecting rod (9).

3. The improved automotive rear axle half shaft bearing seat of claim 2, wherein: The upper end of the connecting rod (9) is movably provided with a first locking block (10), and the upper end of the connecting rod (9) is movably provided with a second locking block (11).

4. The improved automotive rear axle half shaft bearing seat of claim 3, wherein: The lower ends of the first card block (10) and the second card block (11) are fixedly provided with limit ends (12), and a first spring (13) is fixedly provided between the first card block (10) and the second card block (11).

5. The improved automotive rear axle half shaft bearing seat of claim 1 wherein: The base (1) is fixedly provided with a movable groove (14), and a push plate (15) is movably provided inside the movable groove (14). A second spring (16) is fixedly provided between the push plate (15) and the movable groove (14).

6. The improved automotive rear axle half shaft bearing seat of claim 1 wherein: The bearing mounting bracket (2) is provided with an oil injection hole (17) inside, and a sealing plug (18) is provided at the upper end of the oil injection hole (17).

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