Rear-mounted vertical steering assembly of independent suspension

Abstract

The utility model provides an independent suspension rear-mounted vertical steering assembly which comprises a steering shaft fixing assembly which comprises a steering shaft fixing support C, steering shaft fixing supports B are fixed to the two sides of the steering shaft fixing support C, and steering shaft fixing supports A are fixed to the two sides of the top of the steering shaft fixing support C respectively. The steering shaft assembly comprises a bearing seat and a rotating shaft rotationally connected into the bearing seat, the bearing seat is fixed to a steering shaft fixing support B, the tail end of the bottom of the rotating shaft is spherically connected with a lower rocker arm, and the end, away from the rotating shaft, of the lower rocker arm is spherically connected with a steering pull rod; the steering engine is vertically arranged behind the front axle of the vehicle and is arranged at the position close to the steering shaft assembly on one side; according to the rear-mounted vertical steering assembly of the independent suspension, the steering engine is arranged behind the front axle of the vehicle, vertical layout is adopted, the defect that front-mounted steering is prone to being impacted by the front face is overcome, the space of a chassis is fully utilized, arrangement is simplified, and the design flexibility of the chassis of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle steering device technical field, concretely relates to independent suspension rear vertical steering assembly. BACKGROUND

[0002] At present, the automobile steering system is usually arranged at the front axle position, and this design can meet the basic control requirements of the vehicle in most conventional driving scenarios. However, for specific application scenarios such as high-performance vehicles and off-road vehicles, the front axle steering system has some obvious defects. First, the steering flexibility and dynamic stability of the vehicle are limited under high-speed driving or complex terrain conditions, which is difficult to meet the needs of high-performance driving. Secondly, the turning radius of the front axle steering system is large, which limits the maneuverability of the vehicle in narrow areas, which is particularly disadvantageous for off-road vehicles to travel in complex terrain. SUMMARY

[0003] The utility model provides independent suspension rear vertical steering assembly, and the rear steering system passes through the layout of optimization steering mechanism, makes the vehicle can turn more flexibly under high-speed driving and complex terrain conditions.

[0004] The technical scheme of the utility model is realized as follows:

[0005] Independent suspension rear vertical steering assembly, including steering axle fixed assembly, it includes steering axle fixed support C, steering axle fixed support C both sides are fixed with steering axle fixed support B, and its top both sides are fixed with steering axle fixed support A respectively;

[0006] It further includes steering axle assembly, which includes a bearing seat and a rotating shaft connected inside the bearing seat, wherein the bearing seat is fixed on the steering axle fixed support B, the bottom end of the rotating shaft is connected with the lower rocker arm, and the end of the lower rocker arm away from the rotating shaft is connected with the steering drag link;

[0007] It further includes a steering machine arranged behind the front axle of the vehicle, the steering machine is arranged near one side of the steering axle assembly, one side of the steering machine is provided with a steering machine fixed cover, the output end of the steering machine extends into the steering machine fixed cover and is connected with the vertical arm through the spline, the end of the vertical arm away from the output end of the steering machine is connected with the steering side drag link, the end of the steering side drag link away from the vertical arm is connected with the upper rocker arm, and the end of the upper rocker arm is connected with the top end of the rotating shaft;

[0008] It further includes a steering driven rod, the two ends of the steering driven rod are connected with the lower rocker arms of the adjacent steering axle assemblies respectively;

[0009] The upper rocker arm and the lower rocker arm are designed to transmit force vertically, and the volume of the upper rocker arm is smaller than that of the lower rocker arm.

[0010] Further, the steering shaft fixing support B and the steering shaft fixing support A are both L-shaped, wherein the L-shaped notches of the two steering shaft fixing supports B are outwardly directed, and the L-shaped notches of the two steering shaft fixing supports A are inwardly directed, the vertical surfaces of the L-shaped steering shaft fixing supports B and A are oppositely arranged and fixed by bolts.

[0011] Further, the steering shaft fixing support C is U-shaped, and the vertical surfaces of the L-shaped steering shaft fixing support B and the side of the U-shaped steering shaft fixing support C are fixed by bolts.

[0012] Further, the U-shaped steering shaft fixing support C is provided with a plurality of reinforcing ribs on the inner side thereof.

[0013] Further, the mounting area for accommodating the longitudinal beam structure of the chassis is formed between the steering machine fixing cover and the steering shaft fixing support A, and the vertical surfaces of the L-shaped steering shaft fixing support A and the side of the steering machine fixing cover close to the steering shaft fixing support A are fixed on the two sides of the longitudinal beam by bolts.

[0014] Further, the connecting portions of the steering pull rod and the lower rocker arm, the connecting portions of the lower rocker arm and the steering shaft, the connecting portions of the steering shaft and the upper rocker arm, the connecting portions of the upper rocker arm and the steering side pull rod, and the connecting portions of the steering side pull rod and the vertical arm are respectively provided with spherical joints.

[0015] Further, the difference angle between the upper rocker arm and the lower rocker arm when the vehicle is straight driving and when the vehicle is turning to the left and right is slightly larger than 90°.

[0016] The technical scheme provided by the present application has the following beneficial effects:

[0017] 1. The independent suspension rear-mounted vertical steering assembly, by arranging the steering machine at the rear of the front axle of the vehicle and adopting a vertical layout, avoids the defect that the front-mounted steering is easily impacted by the front impact, fully utilizes the chassis space, simplifies the layout, and improves the flexibility of the vehicle chassis design.

[0018] 2. The independent suspension rear-mounted vertical steering assembly, the upper and lower rocker arms are designed to be vertically force-transmitting, the upper rocker arm is designed to be small in size and connected to the steering shaft assembly, and the small size means that the lever action is relatively large, so that the torque can be efficiently transmitted under a small input torque. The lower rocker arm is designed to be large in size to improve the torque carrying capacity, enhance the torsional stiffness and torque transmission efficiency, and ensure the reliability of the steering system under the conditions of limit steering and high load. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Fig. 1 It is a three-dimensional schematic view of the rear vertical steering assembly of the independent suspension.

[0021] Fig. 2 It is an exploded schematic view of the rear vertical steering assembly of the independent suspension.

[0022] In the figure: 10 steering shaft fixing assembly, 11 steering shaft fixing support A, 12 steering shaft fixing support B, 13 steering shaft fixing support C; 20 steering engine, 21 drop arm, 22 steering side pull rod, 23 upper rocker arm; 30 steering shaft assembly, 31 bearing seat, 32 lower rocker arm, 33 steering pull rod, 34 rotating shaft; 40 steering driven rod, 50 steering engine fixing support. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] Referring to Figs. 1-2 , the rear vertical steering assembly of the independent suspension includes a steering shaft fixing assembly 10, which includes a steering shaft fixing support C 13, both sides of the steering shaft fixing support C 13 are fixed with a steering shaft fixing support B 12, and both sides of the top of the steering shaft fixing support C 13 are respectively fixed with a steering shaft fixing support A 11. This structure design makes the steering shaft fixing assembly have good stability and rigidity, can effectively support and fix the steering shaft assembly, and ensures the normal operation of the steering system. The steering shaft fixing support C 13 as a basic support provides the main supporting effect, while the steering shaft fixing support B 12 and the steering shaft fixing support A 11 respectively reinforce from both sides and the top to form a stable support frame, enhancing the reliability and durability of the entire steering system.

[0025] The steering shaft assembly 30 includes a bearing seat 31 fixed on the steering shaft fixed support B12 and a rotating shaft 34 rotatably connected inside the bearing seat 31, wherein the bottom end of the rotating shaft 34 is spherically connected with a lower swing arm 32, and the end of the lower swing arm 32 away from the rotating shaft 34 is spherically connected with a steering drag link 33. This design makes the steering shaft assembly have good rotation performance and connection stability, can effectively transmit the steering force, and ensures the flexibility and reliability of the steering system. The bearing seat 31 is fixed on the steering shaft fixed support B12 to provide stable support for the rotating shaft 34. The spherical connection between the rotating shaft 34 and the lower swing arm 32 enables flexible transmission of the steering force. The spherical connection between the lower swing arm 32 and the steering drag link 33 further enhances the flexibility and reliability of the steering system.

[0026] The steering machine 20 is vertically arranged behind the front axle of the vehicle and is located near one of the side steering shaft assemblies 30. This arrangement enables the steering machine 20 to more directly participate in steering control, improving the response speed and accuracy of the steering system. The steering machine 20 is located near one of the side steering shaft assemblies 30. One side of the steering machine 20 is provided with a steering machine fixed cover 60. The output end of the steering machine 20 extends into the steering machine fixed cover 60 and is connected with a vertical arm 21 through a spline connection. This connection ensures efficient transmission of the steering force and stability during the steering process. The end of the vertical arm 21 away from the output end of the steering machine 20 is spherically connected with a steering side drag link 22. The end of the steering side drag link 22 away from the vertical arm 21 is spherically connected with an upper swing arm 23. The end of the upper swing arm 23 is spherically connected with the top end of the rotating shaft 34. This spherical connection enables more flexible and reliable force transmission during the steering process, ensuring the accuracy and stability of the steering system. Through these connections, the entire steering system achieves efficient force transmission from the steering machine 20 to the steering shaft assembly 30, ensuring the steering performance of the vehicle under various driving conditions.

[0027] The steering driven rod 40 is spherically connected with the lower swing arms 32 of adjacent steering shaft assemblies 30 at both ends. The purpose is to enable uniform transmission of the steering force between adjacent steering shaft assemblies, ensuring that the steering angles and forces of the wheels on both sides of the vehicle remain consistent during the steering process.

[0028] The upper swing arm 23 and the lower swing arm 32 are designed for vertical force transmission. The volume of the upper swing arm 23 is smaller than that of the lower swing arm 32. Through the vertical force transmission design of the upper swing arm 23 and the lower swing arm 32, direct and efficient transmission of the steering force is achieved. The smaller volume and larger leverage ratio of the upper swing arm 23 enable larger output torque to be generated under smaller input torque, improving steering efficiency. The larger volume of the lower swing arm 32 provides better torque carrying capacity and torsional stiffness, ensuring the reliability of the steering system under high load and extreme steering conditions.

[0029] In some embodiments, the steering shaft fixing bracket B12 and the steering shaft fixing bracket A11 are each in the shape of an L, wherein the L-shaped notches of the two steering shaft fixing brackets B12 face outward, and the L-shaped notches of the two steering shaft fixing brackets A11 face inward, the L-shaped vertical faces of the steering shaft fixing bracket B12 and the steering shaft fixing bracket A11 are oppositely arranged and fixed by bolts; the steering shaft fixing bracket A11 is fixed to the side of the longitudinal beam of the chassis by bolts. Through the L-shaped structure and opposite arrangement of the steering shaft fixing bracket B12 and the steering shaft fixing bracket A11, stable support of the steering system is achieved. The L-shaped notches of the steering shaft fixing bracket B12 face outward, and the L-shaped notches of the steering shaft fixing bracket A11 face inward, so that they can be closely matched, and a stable support frame is formed by bolt fixation. This design not only improves the rigidity and stability of the steering system, but also ensures the fixation and support of the steering shaft during vehicle driving. The steering shaft fixing bracket A11 is fixed to the side of the longitudinal beam of the chassis by bolts, further enhancing the reliability of the entire steering system and ensuring the steering performance of the vehicle under various driving conditions.

[0030] In some embodiments, the steering shaft fixing bracket C13 is in the shape of a U, and the L-shaped vertical face of the steering shaft fixing bracket B12 is fixed to the U-shaped side of the steering shaft fixing bracket C13 by bolts. Through the U-shaped structure of the steering shaft fixing bracket C13 and the bolt connection with the L-shaped vertical face of the steering shaft fixing bracket B12, stable support and efficient force transmission of the steering shaft fixing assembly are achieved. The U-shaped steering shaft fixing bracket C13 can effectively wrap and support the steering shaft assembly, providing better stability. The bolt connection of the L-shaped vertical face and the U-shaped side ensures the close connection of the two, so that the steering shaft fixing assembly can better withstand various forces and torques generated during steering.

[0031] In some embodiments, the U-shaped inner side of the steering shaft fixing bracket C13 is provided with a plurality of reinforcing ribs. During steering, the steering shaft fixing bracket C13 needs to withstand various forces and torques from the steering shaft assembly. The arrangement of reinforcing ribs enables the bracket to more effectively disperse and withstand these forces, reduce stress concentration, and prevent deformation and failure.

[0032] In some embodiments, the steering machine fixing cover 60 and the steering shaft fixing support A11 form a mounting area for accommodating the longitudinal beam structure of the chassis, and the L-shaped vertical surface of the steering shaft fixing support A11 and the side of the steering machine fixing cover 60 close to the steering shaft fixing support A11 are respectively bolted on both sides of the longitudinal beam. The mounting area between the steering machine fixing cover 60 and the steering shaft fixing support A11 can accommodate the longitudinal beam structure of the chassis, so that the steering machine 20 can be more directly connected with the chassis, improving the overall stability and rigidity of the steering system. The L-shaped vertical surface of the steering shaft fixing support A11 and the side of the steering machine fixing cover 60 are bolted on both sides of the longitudinal beam, which ensures the stable installation of the steering machine 20 and simplifies the installation process.

[0033] In some embodiments, the connection between the steering pull rod 33 and the lower rocker arm 32, the connection between the lower rocker arm 32 and the pivot shaft 34, the connection between the pivot shaft 34 and the upper rocker arm 23, the connection between the upper rocker arm 23 and the steering side pull rod 22, and the connection between the steering side pull rod 22 and the vertical arm 21 are respectively provided with a spherical joint. By providing spherical joints at the key connections of the steering system, flexible movement and precise control during steering are achieved. The spherical joints allow each component to rotate freely in multiple directions, ensuring that the steering force can be accurately transmitted to each component, thereby achieving precise steering of the vehicle.

[0034] In some embodiments, the angle difference between the upper rocker arm 23 and the lower rocker arm 32 when straight driving and left and right limit steering is slightly larger than 90°. This design provides more space for the steering system, allowing the maximum turning angle of the inner wheel to reach 44° and the outer wheel to reach 35°. This design significantly reduces the turning radius of the vehicle, making it more flexible when operating in complex terrain and better adapting to narrow and complex road conditions.

[0035] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rear-mounted, independent suspension, vertical steering assembly, characterized by, The steering shaft fixing assembly (10) comprises steering shaft fixing supports C (13), both sides of which are fixed with steering shaft fixing supports B (12), and both sides of the top of which are fixed with steering shaft fixing supports A (11); The steering shaft assembly (30) comprises a bearing seat (31) and a rotating shaft (34) connected inside, wherein the bearing seat (31) is fixed on the steering shaft fixing support B (12), and the bottom end of the rotating shaft (34) is connected with a lower rocker arm (32) in a spherical manner, and the end of the lower rocker arm (32) away from the rotating shaft (34) is connected with a steering drag link (33) in a spherical manner. The steering machine (20) is arranged vertically behind the front axle of the vehicle, and is arranged close to one side of the steering shaft assembly (30). One side of the steering machine (20) is provided with a steering machine fixing cover (60), and the output end of the steering machine (20) extends into the steering machine fixing cover (60) and is connected with a vertical arm (21) through a spline. The end of the vertical arm (21) away from the output end of the steering machine (20) is connected with a steering side drag link (22) in a spherical manner. The end of the steering side drag link (22) away from the vertical arm (21) is connected with an upper rocker arm (23) in a spherical manner. The end of the upper rocker arm (23) is connected with the top end of the rotating shaft (34) in a spherical manner. The steering driven rod (40) is connected with the lower rocker arms (32) of the adjacent steering shaft assemblies (30) in a spherical manner at both ends. The upper rocker arm (23) and the lower rocker arm (32) are designed to transmit force vertically. The volume of the upper rocker arm (23) is smaller than that of the lower rocker arm (32).

2. The independent suspension, rear-mounted, upright steering assembly of claim 1 wherein, The steering shaft fixing supports B (12) and the steering shaft fixing supports A (11) are both L-shaped. The L-shaped notches of the two steering shaft fixing supports B (12) are directed outward, and the L-shaped notches of the two steering shaft fixing supports A (11) are directed inward. The vertical surfaces of the L-shaped steering shaft fixing supports B (12) and the L-shaped steering shaft fixing supports A (11) are arranged opposite to each other and are fixed by bolts. The steering shaft fixing supports A (11) are fixed to the side edges of the longitudinal beams of the vehicle chassis by bolts.

3. The independent suspension, rear-mounted, upright steering assembly of claim 2, wherein, The steering shaft fixing support C (13) is U-shaped, and the vertical surfaces of the L-shaped steering shaft fixing supports B (12) are fixed to the side edges of the U-shaped steering shaft fixing support C (13) by bolts.

4. The independently suspended, rear-mounted, upright steering assembly of claim 3 wherein, The inside of the U-shaped steering shaft fixing support C (13) is provided with a plurality of reinforcing ribs.

5. The independent suspension rear-mounted vertical steering assembly of claim 2, wherein, The steering machine fixing cover (60) and the steering shaft fixing support A (11) form a mounting area for accommodating the longitudinal beam structure of the vehicle chassis. The vertical surfaces of the L-shaped steering shaft fixing support A (11) and the side of the steering machine fixing cover (60) close to the steering shaft fixing support A (11) are fixed to the two sides of the longitudinal beam by bolts, respectively.

6. The independent suspension rear-mounted vertical steering assembly of claim 1, wherein, The connection between the steering drag link (33) and the lower rocker arm (32), the connection between the lower rocker arm (32) and the rotating shaft (34), the connection between the rotating shaft (34) and the upper rocker arm (23), the connection between the upper rocker arm (23) and the steering side drag link (22), and the connection between the steering side drag link (22) and the vertical arm (21) are all provided with spherical joints.

7. The independent suspension, rear-mounted, upright steering assembly of claim 1 wherein, The upper rocker arm (23) and the lower rocker arm (32) have a phase difference angle slightly greater than 90° when straight running and when turning to the left and right limits.

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