An automotive rear steering knuckle assembly

Abstract

The present invention provides an automotive rear steering knuckle assembly, including the overall body of the rear steering knuckle. The overall body of the rear steering knuckle includes a steering knuckle panel, a hub fixing bracket, a control arm connecting bracket, a lower control arm mechanism, and a steering arm connecting bracket. A reinforcing ring is provided in the middle of the steering knuckle panel. A plurality of hub fixing brackets are installed at the rear end of the steering knuckle panel, and each hub fixing bracket is installed at the top and bottom positions of the reinforcing ring in a symmetrical form. A control arm connecting bracket is installed at the bottom of the steering knuckle panel. In the lower control arm mechanism at the bottom of this automotive rear steering knuckle assembly, a main control arm and two auxiliary control arms are installed, with higher safety. A hub fixing bracket is provided at the rear end, reducing the usage amount of bolts and making disassembly and assembly simpler and more convenient. The probability of breakage of the bottommost auxiliary collar is reduced through the fixing plate structure, further improving the stability and safety of the control arm part.

Description

Technical Field

[0001] The invention relates to the technical field of steering knuckles, in particular to a rear steering knuckle assembly of an automobile. Background Art

[0002] The steering knuckle, also known as the clevis, is one of the important parts in the automobile steering axle. It can make the car run stably and sensitively transmit the driving direction. Its main function is to transmit and bear the car load, support and drive the wheels to rotate around the kingpin to steer the car.

[0003] The rear steering knuckle assembly in the prior art realizes the steering process through the control arm and the steering arm. However, after the conventional control arm is connected to the rear steering knuckle, when the vehicle is hit violently during driving, the control arm connecting frame may break. After the break, the steering function can no longer be realized, and a temporary transmission structure cannot be provided. Therefore, the control arm has too independent and single function and is not safe enough. On the other hand, due to frequent friction between the steering arm and the steering arm connecting frame, this part needs to be regularly maintained or even replaced after long-term use, which increases the subsequent maintenance cost. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a rear steering knuckle assembly for an automobile to solve the problems raised in the above-mentioned background technology. The present invention is provided with a multi-layer control arm structure in the control arm part, which, in conjunction with the rear end transverse wheel hub fixing frame, can reduce the probability of the control arm connecting frame breaking. Even if part of it is broken, it can still provide a stable steering function, which has higher safety and reduces the maintenance and replacement costs.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a rear steering knuckle assembly of an automobile, including a rear steering knuckle assembly body, the rear steering knuckle assembly body including a steering knuckle panel, a wheel hub fixing frame, a control arm connecting frame, a lower control arm mechanism and a steering arm connecting frame, a reinforcement ring is arranged in the middle of the steering knuckle panel, a plurality of wheel hub fixing frames are installed at the rear end of the steering knuckle panel, and each wheel hub fixing frame is symmetrically installed at the top and bottom positions of the reinforcement ring, a control arm connecting frame is installed at the bottom of the steering knuckle panel, the end of the lower control arm mechanism is movably connected with the control arm connecting frame, a steering rod is arranged on one side of the steering knuckle panel, and the steering rod is movably connected with the upper steering arm mechanism part through the steering arm connecting frame.

[0006] Furthermore, the lower control arm mechanism includes a main control arm and an auxiliary control arm, the rear ends of the auxiliary control arm and the main control arm are combined and connected through an integration plate part, the other ends of the main control arm and the auxiliary control arm are installed with a rotating shaft, the surface of the rotating shaft is provided with a fixing ring, and limit stop rings are provided at both ends of the rotating shaft.

[0007] Furthermore, there are two auxiliary control arms, and the two auxiliary control arms are installed on both sides of the main control arm in a symmetrical form, and the main control arm and the auxiliary control arms always remain in a horizontal state.

[0008] Furthermore, the control arm connecting frame includes a main collar and auxiliary collars. A lower extension plate is provided at the bottom of the knuckle panel, and a front convex plate is provided at the front end of the lower extension plate. The main collar is opened at the middle position of the front convex plate.

[0009] Furthermore, four auxiliary collars are installed on the surface of the lower extension plate, and the auxiliary collars are symmetrically arranged at the top and bottom positions of the front convex plate. The rotating shaft sequentially passes through the inside of the main collar and the auxiliary collars.

[0010] Furthermore, the sides of the fixed ring are respectively clamped by the main collar and the auxiliary collars. The end of the auxiliary control arm is installed at the position between two adjacent auxiliary collars. The cross-sectional diameter of the rotating shaft is the same as the inner wall diameters of the main collar and the auxiliary collars.

[0011] Furthermore, the steering arm connecting frame includes a front steering transmission sleeve and a lining sleeve. A support block is provided at the end of the upper steering arm mechanism. A threaded hole is opened at the center position of the surface of the support block. The lining sleeve is embedded inside the front steering transmission sleeve. A threaded column is inserted through the middle of the lining sleeve, and a pressing plate is installed at the top of the threaded column.

[0012] Furthermore, the bottom end of the threaded column penetrates into the interior of the threaded hole. The bottom end of the lining sleeve presses on the surface of the support block. The height of the lining sleeve is the same as the height of the front steering transmission sleeve, and the outer side of the lining sleeve fits with the inner wall of the front steering transmission sleeve. Lubricating oil is applied between the front steering transmission sleeve and the lining sleeve.

[0013] Furthermore, the wheel hub fixing frame includes a fixing plate and a mounting rod. The fixing plate is welded and installed at the rear end of the knuckle panel. A rear steering transmission sleeve is provided on the outer side of the fixing plate. The rear steering transmission sleeve is sleeved on the surface of the mounting rod. Locking plates are provided at both ends of the mounting rod.

[0014] Furthermore, there are two groups of wheel hub fixing frames, and each mounting rod is kept parallel. The vertical plane where the lower control arm mechanism is located is aligned with the middle position of the mounting rod.

[0015] Advantages of the present invention: An automotive rear steering knuckle assembly of the present invention includes a rear steering knuckle total body, and the rear steering knuckle total body includes a steering knuckle panel, a reinforcing ring, a wheel hub fixing bracket, a control arm connecting bracket, a lower control arm mechanism, a steering tie rod, an upper steering arm mechanism, a steering arm connecting bracket, a main control arm, an auxiliary control arm, an integration plate, a rotating shaft, a fixing ring, a limit retaining ring, a lower extension plate, a front convex plate, a main collar, an auxiliary collar, a support block, a threaded hole, a front steering transmission sleeve, a lining sleeve, a threaded post, a pressing plate, a fixing plate, a rear steering transmission sleeve, a mounting rod, and a locking plate.

[0016] 1. A main control arm and two auxiliary control arms are installed in the lower control arm mechanism at the bottom of the automotive rear steering knuckle assembly, and multiple support points can be provided through the control arm connecting bracket at the rear end. This structure can still provide a stable steering function after partial fracture occurs in the control arm connecting bracket or the lower control arm mechanism due to a collision of the vehicle, with higher safety.

[0017] 2. A wheel hub fixing bracket is provided at the rear end of the automotive rear steering knuckle assembly. Through this structure, the transmission range when the steering knuckle panel drives the wheel hub part to rotate can be expanded, the usage amount of bolts is reduced, disassembly and assembly are simpler and more convenient, and through this structure, most of the impact force can be transmitted to the top position of the control arm connecting bracket during a collision, reducing the probability of fracture of the lowest-level auxiliary collar, and further improving the stability and safety of the control arm part.

[0018] 3. In the steering arm control bracket of the automotive rear steering knuckle assembly, the lining sleeve is installed inside the front steering transmission sleeve through the threaded post. Therefore, the lining sleeve bears the external transmission friction pressure. During subsequent maintenance, only the lining sleeve part needs to be replaced, extending the service life of the upper steering arm mechanism and the steering knuckle panel, and reducing the replacement cost. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the outer shape of an automotive rear steering knuckle assembly of the present invention;

[0020] Figure 2 is a schematic structural diagram of the lower control arm mechanism part of an automotive rear steering knuckle assembly of the present invention;

[0021] Figure 3 is a schematic structural diagram of the control arm connecting bracket part of an automotive rear steering knuckle assembly of the present invention;

[0022] Figure 4 is a schematic structural diagram of the steering arm connecting bracket part of an automotive rear steering knuckle assembly of the present invention;

[0023] Figure 5Schematic diagram of the structure of the hub fixing bracket part of an automotive rear steering knuckle assembly according to the present invention;

[0024] In the figure: 1, steering knuckle panel; 2, reinforcing ring; 3, hub fixing bracket; 4, control arm connecting bracket; 5, lower control arm mechanism; 6, steering tie rod; 7, upper steering arm mechanism; 8, steering arm connecting bracket; 9, main control arm; 10, auxiliary control arm; 11, integration plate; 12, rotating shaft; 13, fixing ring; 14, limiting retaining ring; 15, lower extension plate; 16, front convex plate; 17, main collar; 18, auxiliary collar; 19, supporting block; 20, threaded hole; 21, front steering drive sleeve; 22, inner lining sleeve; 23, threaded post; 24, pressing plate; 25, fixing plate; 26, rear steering drive sleeve; 27, mounting rod; 28, locking plate. Detailed implementation manners

[0025] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0026] Please refer to Figures 1 to 5 , the present invention provides a technical solution: an automotive rear steering knuckle assembly, including the rear steering knuckle assembly body, the rear steering knuckle assembly body includes a steering knuckle panel 1, a hub fixing bracket 3, a control arm connecting bracket 4, a lower control arm mechanism 5 and a steering arm connecting bracket 8. A reinforcing ring 2 is provided in the middle of the steering knuckle panel 1. A plurality of hub fixing brackets 3 are installed at the rear end of the steering knuckle panel 1, and each hub fixing bracket 3 is symmetrically installed at the top and bottom positions of the reinforcing ring 2. A control arm connecting bracket 4 is installed at the bottom of the steering knuckle panel 1. The end of the lower control arm mechanism 5 is movably connected to the control arm connecting bracket 4. A steering tie rod 6 is provided on one side of the steering knuckle panel 1. The steering tie rod 6 is movably connected to the upper steering arm mechanism 7 through the steering arm connecting bracket 8. When the automotive rear steering knuckle assembly operates, the steering power is transmitted to the steering arm connecting bracket 8 through the upper steering arm mechanism 7, and then the entire steering knuckle panel 1 can be rotated around the part between the control arms at the bottom. The rear end of the steering knuckle panel 1 is fixed to the hub of the vehicle through the hub fixing bracket 3. Therefore, the entire wheel can be driven to perform a steering movement. After the lower control arm mechanism 5 and the control arm connecting bracket 4 are combined, a plurality of support points can be provided in the vertical direction, and the steering knuckle panel 1 can be stably reversed around the rotating shaft 12. And even if there is an impact later, the auxiliary collar 18 at the bottom of the control arm connecting bracket 4 is combined and installed with the rear hub fixing bracket 3 part, and the effective reversing transmission effect can still be provided through the only hub fixing bracket 3, improving the overall safety.

[0027] In this embodiment, the lower control arm mechanism 5 includes a main control arm 9 and an auxiliary control arm 10. The rear ends of the auxiliary control arm 10 and the main control arm 9 are combined and connected through a part of an integrated plate 11. The other ends of the main control arm 9 and the auxiliary control arm 10 are installed with a rotating shaft 12. A fixing ring 13 is arranged on the surface of the rotating shaft 12. Limit retaining rings 14 are arranged at both ends of the rotating shaft 12. There are two auxiliary control arms 10, and the two auxiliary control arms 10 are symmetrically installed on both sides of the main control arm 9. The main control arm 9 and the auxiliary control arm 10 always remain in a horizontal state. One main control arm 9 and two auxiliary control arms 10 are installed in the lower control arm mechanism 5 at the bottom, and a plurality of support points can be provided through the control arm connecting frame 4 at the rear end. This structure can still provide a stable steering function after partial fracture occurs in the control arm connecting frame 4 or the lower control arm mechanism 5 due to a vehicle impact, with higher safety. Specifically, by using the main control arm 9 and the auxiliary control arm 10 to support the rotating shaft 12, the rotating shaft 12 can be stably inserted into the control arm connecting frame 4 to provide a function of guiding rotation.

[0028] In this embodiment, the control arm connecting frame 4 includes a main collar 17 and an auxiliary collar 18. A lower extension plate 15 is arranged at the bottom of the steering knuckle panel 1. A front convex plate 16 is arranged at the front end of the lower extension plate 15. The main collar 17 is opened at the middle position of the front convex plate 16. Four auxiliary collars 18 are installed on the surface of the lower extension plate 15, and the auxiliary collars 18 are symmetrically arranged at the top and bottom positions of the front convex plate 16. The rotating shaft 12 sequentially passes through the inner sides of the main collar 17 and the auxiliary collar 18. The sides of the fixing ring 13 are clamped by the main collar 17 and the auxiliary collar 18 respectively. The end of the auxiliary control arm 10 is installed at the position between two adjacent auxiliary collars 18. The cross-sectional diameter of the rotating shaft 12 is the same as the inner wall diameters of the main collar 17 and the auxiliary collar 18. Specifically, by sleeving the main collar 17 and the auxiliary collar 18 on the rotating shaft 12 to provide a guiding process, when the vehicle is impacted, as long as any one group between the main control arm 9 and the main collar 17 or the auxiliary control arm 10 and the auxiliary collar 18 remains connected, the function of reversing transmission can be continued.

[0029] In this embodiment, the steering arm connecting bracket 8 includes a front steering transmission sleeve 21 and a lining sleeve 22. A support block 19 is provided at the end of the upper steering arm mechanism 7. A threaded hole 20 is formed at the center of the surface of the support block 19. The lining sleeve 22 is embedded inside the front steering transmission sleeve 21. A threaded column 23 is inserted through the middle of the lining sleeve 22. A pressing plate 24 is installed at the top of the threaded column 23. The bottom end of the threaded column 23 penetrates into the inside of the threaded hole 20. The bottom end of the lining sleeve 22 presses against the surface of the support block 19. The height of the lining sleeve 22 is the same as that of the front steering transmission sleeve 21, and the outer side of the lining sleeve 22 fits against the inner wall of the front steering transmission sleeve 21. Lubricating oil is applied between the front steering transmission sleeve 21 and the lining sleeve 22. In the steering arm control bracket, the lining sleeve 22 is installed inside the front steering transmission sleeve 21 through the threaded column 23. Therefore, the lining sleeve 22 bears the external transmission friction pressure. During subsequent maintenance, only the lining sleeve 22 needs to be replaced, which extends the service life of the upper steering arm mechanism 7 and the steering knuckle panel 1 and reduces the replacement cost. Specifically, after the thrust is pushed into the steering arm connecting bracket 8 through the upper steering arm mechanism 7, the entire support block 19, lining sleeve 22, and threaded column 23 can be pushed. During this process, the lining sleeve 22 rotates inside the front steering transmission sleeve 21, replacing the process of direct friction between the upper steering arm mechanism 7 and the steering tie rod 6. Therefore, it provides a protective effect on the upper steering arm mechanism 7 and extends the service life between the upper steering arm and the steering tie rod 6.

[0030] In this embodiment, the wheel hub fixing bracket 3 includes a fixing plate 25 and a mounting rod 27. The fixing plate 25 is welded and installed at the rear end of the knuckle panel 1. A rear steering transmission sleeve 26 is arranged on the outer side of the fixing plate 25. The rear steering transmission sleeve 26 is sleeved on the surface of the mounting rod 27. Locking plates 28 are arranged at both ends of the mounting rod 27. There are two groups of wheel hub fixing brackets 3, and the mounting rods 27 are kept parallel to each other. The vertical plane where the lower control arm mechanism 5 is located is aligned with the middle position of the mounting rod 27. A wheel hub fixing bracket 3 is arranged at the rear end. Through this structure, the transmission range when the knuckle panel 1 drives the wheel hub part to rotate can be expanded, the usage amount of bolts is reduced, and disassembly and assembly are more simple and convenient. And through this structure, most of the impact force can be transmitted to the top position of the control arm connecting bracket 4 during impact, reducing the probability of fracture of the lowermost auxiliary collar 18, and further improving the stability and safety of the control arm part. Through the large-range connection area between the knuckle panel 1 and the fixing plate 25, the torque generated by the knuckle panel 1 can be transmitted to the wheel hub part through the large-range transmission area between the rear steering transmission sleeve 26 and the mounting rod 27, thereby improving the stability during the steering process. Moreover, the fixing plate 25 at the bottom and the two groups of auxiliary collars 18 at the bottom are fixed as a whole. Therefore, even if the auxiliary collar 18 at the top and the column collar are fractured, or the knuckle panel 1 is broken and deformed, as long as the auxiliary collar 18 at the bottom remains intact, the function of directly providing rotational guidance can still be provided through a single wheel hub fixing bracket 3, providing additional safety protection.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automotive rear steering knuckle assembly, including the overall body of the rear steering knuckle, characterized in that: The overall body of the rear steering knuckle includes a steering knuckle panel (1), a wheel hub fixing bracket (3), a control arm connecting bracket (4), a lower control arm mechanism (5), and a steering arm connecting bracket (8). A reinforcing ring (2) is provided in the middle of the steering knuckle panel (1). A plurality of wheel hub fixing brackets (3) are installed at the rear end of the steering knuckle panel (1), and each wheel hub fixing bracket (3) is symmetrically installed at the top and bottom positions of the reinforcing ring (2). A control arm connecting bracket (4) is installed at the bottom of the steering knuckle panel (1). The end of the lower control arm mechanism (5) is movably connected to the middle position of the control arm connecting bracket (4). A steering tie rod (6) is provided on one side of the steering knuckle panel (1). The steering tie rod (6) is movably connected to a part of the upper steering arm mechanism (7) through the steering arm connecting bracket (8). The lower control arm mechanism (5) includes a main control arm (9) and an auxiliary control arm (10). One end of the auxiliary control arm (10) and the main control arm (9) are combined and connected through a part of an integration plate (11). The other ends of the main control arm (9) and the auxiliary control arm (10) are installed with a rotating shaft (12). A fixing ring (13) is provided on the surface of the rotating shaft (12). Limit retaining rings (14) are provided at both ends of the rotating shaft (12). The control arm connecting bracket (4) includes a main collar (17) and an auxiliary collar (18). A lower extension plate (15) is provided at the bottom of the steering knuckle panel (1). A front convex plate (16) is provided at the front end of the lower extension plate (15). The main collar (17) is opened at the middle position of the front convex plate (16).

2. The automotive rear steering knuckle assembly according to claim 1, characterized in that: There are two auxiliary control arms (10), and the two auxiliary control arms (10) are symmetrically installed on both sides of the main control arm (9). The main control arm (9) and the auxiliary control arm (10) always remain in a horizontal state.

3. The automotive rear steering knuckle assembly according to claim 1, wherein: Four auxiliary collars (18) are installed on the surface of the lower extension plate (15), and the auxiliary collars (18) are symmetrically arranged at the top and bottom positions of the front convex plate (16). The rotating shaft (12) sequentially passes through the inner sides of the main collar (17) and the auxiliary collars (18).

4. The automotive rear steering knuckle assembly according to claim 3, characterized in that: The sides of the fixing ring (13) are respectively clamped by the main collar (17) and the auxiliary collars (18). The end of the auxiliary control arm (10) is installed at the position between two adjacent auxiliary collars (18). The cross-sectional diameter of the rotating shaft (12) is the same as the inner wall diameters of the main collar (17) and the auxiliary collars (18).

5. The automotive rear steering knuckle assembly according to claim 1, characterized in that: The steering arm connecting bracket (8) includes a front steering transmission sleeve (21) and a lining sleeve (22). A support block (19) is provided at the end of the upper steering arm mechanism (7). A threaded hole (20) is opened at the center position of the surface of the support block (19). The lining sleeve (22) is embedded inside the front steering transmission sleeve (21). A threaded post (23) is inserted through the middle of the lining sleeve (22). A pressing plate (24) is installed at the top of the threaded post (23).

6. The automotive rear steering knuckle assembly according to claim 5, wherein: The bottom end of the threaded post (23) penetrates into the interior of the threaded hole (20), the bottom end of the inner lining sleeve (22) presses against the surface of the supporting block (19), the height of the inner lining sleeve (22) is the same as that of the front steering transmission sleeve (21), and the outer side of the inner lining sleeve (22) fits against the inner wall of the front steering transmission sleeve (21). Lubricating oil is coated between the front steering transmission sleeve (21) and the inner lining sleeve (22).

7. The automotive rear steering knuckle assembly according to claim 1, wherein: The hub fixing bracket (3) includes a fixing plate (25) and a mounting rod (27). The fixing plate (25) is welded and installed at the rear end of the steering knuckle panel (1). A rear steering transmission sleeve (26) is arranged on the outer side of the fixing plate (25). The rear steering transmission sleeve (26) is sleeved on the surface of the mounting rod (27). Locking plates (28) are arranged at both ends of the mounting rod (27). The rear end of the auxiliary collar (18) at the bottom of the front convex plate (16) is integrally welded with a part of the fixing plate (25).

8. The automotive rear steering knuckle assembly according to claim 7, wherein: Two groups of the hub fixing brackets (3) are provided, and each mounting rod (27) is kept in a parallel state. The vertical plane where the lower control arm mechanism (5) is located is aligned with the middle position of the mounting rod (27).

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