A steering linkage, a steering rocker, a vehicle and a chassis thereof

Abstract

This utility model belongs to the field of vehicle steering, specifically providing a steering linkage, a steering rocker arm, a vehicle, and its chassis. This steering linkage decouples the steering side tie rod and the steering center tie rod, allowing the steering rocker arm to directly drive the steering side tie rod. Simultaneously, the steering center tie rod is connected to the front side of the steering side tie rod, placing it in a more forward position to avoid interference with the front-mounted engine. The vehicle and its chassis include the aforementioned steering linkage. The steering rocker arm has a vertically extending swing axis; the front side of the swing axis has a center tie rod connecting arm for connecting to the steering center link, and the rear side has a side tie rod connecting arm for directly connecting to the steering side tie rod.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle steering, and in particular relates to a steering linkage, a steering rocker arm, a vehicle and its chassis. Background Technology

[0002] The steering linkage is a crucial geometric structure in a vehicle's steering system. Its core purpose is to ensure that the steering angle of the inner steering wheel is greater than that of the outer steering wheel when the vehicle is turning.

[0003] Existing steering linkages generally include two steering rocker arms located on the left and right sides of the vehicle frame, a steering tie rod connecting the two steering rocker arms, and a steering side tie rod connecting the wheel-side structure and the steering rocker arms. For example, the applicant's utility model patent with authorization announcement number CN211764763U provides a front independent suspension system for light passenger vehicles. The steering trapezoidal mechanism of this system includes two steering rocker arms, with a steering tie rod (i.e., steering center tie rod) connecting the two steering rocker arms. One end of the steering side tie rod, which is connected to the wheel-side structure (i.e., wheel-side assembly), is connected to the steering tie rod.

[0004] The motion relationship of the steering tie rods on the steering side is affected by the steering center tie rod, and the two are prone to interference during movement, making the design more difficult. Additionally, for some front-engine vehicles, the front engine is positioned lower to reduce the vehicle floor height, and the steering center tie rod can also easily interfere with the front engine's placement. Utility Model Content

[0005] The purpose of this invention is to provide a steering linkage system to solve the technical problem in the prior art where the steering tie rod easily interferes with the steering side tie rod and the front-mounted engine. Another purpose of this invention is to provide a steering rocker arm that can be connected to the steering linkage system to solve the same technical problem.

[0006] Furthermore, the present invention also aims to provide a vehicle chassis to solve the same technical problem.

[0007] To achieve the above objectives, the technical solution for the steering linkage provided by this utility model is as follows:

[0008] A steering linkage includes a left steering rocker arm and a right steering rocker arm, with a steering center tie rod connecting the left and right steering rocker arms. The left steering rocker arm is directly connected to a left steering side tie rod, and the right steering rocker arm is directly connected to a right steering side tie rod. The steering center tie rod is located in front of the left and right steering side tie rods, and the other ends of the left and right steering side tie rods are used to connect to a wheel-side structure.

[0009] As a further improvement, one of the left and right steering arms is connected to a steering damping rod, and the other is connected to a tie rod.

[0010] As a further improvement, the connection points of the steering tie rod with the left steering rocker arm and with the right steering rocker arm are located directly in front of the connection points of the left steering rocker arm and the left steering side tie rod, and the connection points of the right steering rocker arm and the right steering side tie rod, respectively.

[0011] This invention relates to a modification of key elements, and its beneficial effects are as follows: This invention decouples the center steering tie rod and the side steering tie rod, and sets a point on the steering rocker arm that can directly connect to the side steering tie rod. The steering rocker arm directly drives the side steering tie rod, facilitating design to ensure that the center steering tie rod and the side steering tie rod do not interfere with each other, thereby improving the flexibility of the steering system. Simultaneously, the position of the center steering tie rod is moved forward to avoid obstructing the front-mounted engine, satisfying the normal layout of the vehicle.

[0012] To achieve the above objectives, the technical solution for the vehicle chassis provided by this utility model is as follows:

[0013] A vehicle chassis includes a frame, on which a steering linkage is mounted. The steering linkage includes a left steering rocker arm and a right steering rocker arm, and a steering center tie rod is connected between the left and right steering rocker arms. The left steering rocker arm is directly connected to a left steering side tie rod, and the right steering rocker arm is directly connected to a right steering side tie rod. The steering center tie rod is located in front of the left and right steering side tie rods, and the other ends of the left and right steering side tie rods are connected to a wheel-side structure.

[0014] As a further improvement, one of the left and right steering arms is connected to a steering damping rod, and the other is connected to a tie rod.

[0015] As a further improvement, the connection points of the steering tie rod with the left steering rocker arm and with the right steering rocker arm are located directly in front of the connection points of the left steering rocker arm and the left steering side tie rod, and the connection points of the right steering rocker arm and the right steering side tie rod, respectively.

[0016] As a further improvement, subframes are connected to the left and right sides of the chassis respectively. The upper control arm and the lower control arm located below the upper control arm are connected to the subframes, so that the upper and lower control arms are integrated into the chassis through the subframes.

[0017] As a further improvement, the subframes on the left and right sides are bolted to crossbeams, with bolts passing through the longitudinal beams of the frame and connecting to the subframes.

[0018] This utility model is an improved invention, and its beneficial effects are as follows: This utility model decouples the steering center tie rod and the steering side tie rod of the steering linkage system. A point is set in the steering rocker arm that can directly connect to the steering side tie rod, allowing the steering rocker arm to directly drive the steering side tie rod. This facilitates the design so that the steering center tie rod and the steering side tie rod do not interfere with each other, thereby improving the flexibility of the steering system. Simultaneously, the position of the steering center tie rod is moved forward to avoid obstructing the front-mounted engine, satisfying the normal layout of the vehicle.

[0019] To achieve the above objectives, the technical solution for the vehicle provided by this utility model is as follows:

[0020] A vehicle includes a chassis, the chassis including a frame, a steering linkage mounted on the frame, the steering linkage including a left steering rocker arm and a right steering rocker arm, a steering center tie rod connecting the left and right steering rocker arms, a left steering side tie rod directly connected to the left steering rocker arm, and a right steering side tie rod directly connected to the right steering side tie rod. The steering center tie rod is located in front of the left and right steering side tie rods, and the other ends of the left and right steering side tie rods are connected to a wheel-side structure.

[0021] As a further improvement, one of the left and right steering arms is connected to a steering damping rod, and the other is connected to a tie rod.

[0022] As a further improvement, the connection points of the steering tie rod with the left steering rocker arm and with the right steering rocker arm are located directly in front of the connection points of the left steering rocker arm and the left steering side tie rod, and the connection points of the right steering rocker arm and the right steering side tie rod, respectively.

[0023] As a further improvement, subframes are connected to the left and right sides of the chassis respectively. The upper control arm and the lower control arm located below the upper control arm are connected to the subframes, so that the upper and lower control arms are integrated into the chassis through the subframes.

[0024] As a further improvement, the subframes on the left and right sides are bolted to crossbeams, with bolts passing through the longitudinal beams of the frame and connecting to the subframes.

[0025] This utility model is an improved invention, and its beneficial effects are as follows: This utility model decouples the steering center tie rod and the steering side tie rod of the steering linkage system. A point is set in the steering rocker arm that can directly connect to the steering side tie rod, allowing the steering rocker arm to directly drive the steering side tie rod. This facilitates the design so that the steering center tie rod and the steering side tie rod do not interfere with each other, thereby improving the flexibility of the steering system. Simultaneously, the position of the steering center tie rod is moved forward to avoid obstructing the front-mounted engine, satisfying the normal layout of the vehicle.

[0026] To achieve the above objectives, the technical solution for the steering rocker arm provided by this utility model is as follows:

[0027] A steering rocker arm has a vertically extending swing axis, with a center tie rod connecting arm on the front side of the swing axis for connecting the steering center link and a side tie rod connecting arm on the rear side for directly connecting the steering side tie rod.

[0028] As a further improvement, the outer side of the swing axis is provided with a damping rod connecting arm for connecting the steering damping rod or a straight rod connecting arm for connecting the straight rod.

[0029] As a further improvement, the connection point of the center tie rod connecting arm for connecting with the steering center tie rod is located directly in front of the connection point of the side tie rod connecting arm for connecting with the steering side tie rod.

[0030] This utility model is a pioneering invention, and its beneficial effects are as follows: The steering rocker arm provided by this utility model can be directly connected to the steering side tie rod, decoupling the steering center tie rod and the steering side tie rod. The steering rocker arm directly drives the steering side tie rod, which facilitates the design so that the steering center tie rod and the steering side tie rod do not interfere with each other, thereby improving the flexibility of the steering system. At the same time, the steering center tie rod is connected to a forward position of the vehicle to avoid the front-mounted engine, which meets the normal layout of the vehicle. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the steering linkage system of this utility model installed at the rear of the vehicle frame (with the right steering damping rod hidden).

[0032] Figure 2 This is a structural schematic diagram of the steering linkage embodiment of this utility model;

[0033] Figure 3 for Figure 1 A schematic diagram of the left-center steering rocker arm.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Left steering rocker arm; 2. Lower control arm; 3. Frame; 4. Steering center tie rod; 5. Right steering damping rod; 6. Right steering rocker arm; 7. Right steering side tie rod; 8. Wheel-side structure; 9. Upper control arm; 10. Connecting crossbeam; 11. Subframe; 12. Left steering side tie rod; 13. Straight tie rod; 101. Side tie rod connecting arm; 102. Center tie rod connecting arm; 103. Damping rod connecting arm. Detailed Implementation

[0036] To improve the steering flexibility of the steering system and facilitate the placement of the front-mounted engine, the basic technical concept of this invention is to decouple the steering side tie rod and the steering center tie rod, so that the steering rocker arm directly drives the steering side tie rod. Simultaneously, the steering center tie rod is connected to the front side of the steering side tie rod, placing it in a more forward position to avoid obstructing the front-mounted engine.

[0037] Based on the above concept, the present invention will be further described in detail below with reference to the embodiments.

[0038] Specific implementation of the steering linkage system provided by this utility model:

[0039] The steering linkage provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, this specifically includes a left steering rocker arm 1 and a right steering rocker arm 6, which can be respectively installed on the left and right sides of the frame 3. In other words, Figure 1 What is shown is actually the front part of the chassis. The structure of the frame 3 can be consistent with existing technology, including crossbeams and longitudinal beams. A steering tie rod 4 connects the left steering rocker arm 1 and the right steering rocker arm 6. Both the left steering rocker arm 1 and the right steering rocker arm 6 have defined swing axes, and both swing axes extend vertically. One of the two steering rocker arms can be connected to a steering gear and swings under the drive of the steering gear, and drives the other steering rocker arm to swing through the steering tie rod 4. The connection method between the two steering rocker arms and the frame 3, as well as the connection method between the steering tie rod 4 and the two steering rocker arms, can be consistent with existing technology and will not be described in detail here.

[0040] Unlike existing technologies, in this embodiment, the steering rocker arm is directly connected to the steering side tie rod. Specifically, the left steering rocker arm 1 is connected to the left steering side tie rod 12, and the right steering rocker arm 6 is connected to the right steering side tie rod 7. The other ends of the left steering side tie rod 12 and the right steering side tie rod 7 can be connected to the corresponding wheel-side structure 8. When the left steering side tie rod 12 and the right steering side tie rod 7 are activated, the wheel-side structure 8 can be pulled / pushed to swing, thus completing the steering. The steering tie rod 4 is located in front of the left steering side tie rod 12 and the right steering side tie rod 7. Similarly, the connection between the steering side tie rod and the steering rocker arm can also adopt a conventional hinge structure.

[0041] In other words, for the steering rocker arm, such as Figure 3 As shown, the steering rocker arm is provided with a side tie rod connecting arm 101 for directly connecting to the steering side tie rod and a center tie rod connecting arm 102 for connecting to the steering center tie rod 4.

[0042] As described above, compared to the existing technology that connects the steering side tie rod to the steering center tie rod 4, in this embodiment, the movement of the steering side tie rod is directly driven by the steering rocker arm, which can more simply and conveniently achieve normal operation of the steering system. At the same time, the steering center tie rod 4 can be positioned as far forward as possible to facilitate the normal installation of the front-mounted engine.

[0043] To improve the stability of the steering system, in a preferred embodiment, such as Figure 1 and Figure 2As shown, for left-hand drive vehicles, the right steering rocker arm 6 is also connected to a right steering damping rod 5. Correspondingly, the left steering rocker arm 1 can be used to connect to the tie rod 13, and through the tie rod 13, to the steering gear drop arm. The other end of the right steering damping rod 5 can be connected to the frame 3. When the driver operates the steering mechanism, the steering damping rod can prevent the steering rocker arm from swinging over a large range in an instant, thereby improving steering stability. At the same time, the steering damping rod can also absorb vibrations caused by uneven road surfaces.

[0044] It should be noted that for right-hand drive vehicles, when installing a steering damping rod, the left steering rocker arm 1 can be connected to the steering damping rod, while the right steering rocker arm 6 is connected to the tie rod 13.

[0045] Based on the above introduction, it can be seen that for the steering rocker arm, as... Figure 3 As shown, it also has a damping rod connecting arm 103, which can be used to connect the steering damping rod on the corresponding side. Alternatively, the steering rocker arm also has a tie rod connecting arm, which can be used to connect the tie rod on the corresponding side.

[0046] In a more preferred implementation, such as Figure 2 and Figure 3 As shown, the connection points of the steering tie rod 4 with the left steering rocker arm 1 and with the right steering rocker arm 6 are located directly in front of the connection points of the left steering rocker arm 1 and the left steering side tie rod 12, and the right steering rocker arm 6 and the right steering side tie rod 7, respectively. This allows full utilization of the longitudinal dimensions of the steering rocker arms, enabling the steering tie rod 4 to be positioned as far forward as possible, thus providing more space to avoid the front-mounted engine.

[0047] In addition, for a vehicle chassis, this naturally includes the suspension system, such as... Figure 1 As shown, in some embodiments, the suspension system can be a double wishbone independent suspension, which includes an upper control arm 9 and a lower control arm 2 located below the upper control arm 9. Both the upper control arm 9 and the lower control arm 2 are connected to the wheel-side structure 8. Unlike existing technologies, when mounting the suspension system onto the vehicle frame 3, both the upper control arm 9 and the lower control arm 2 are connected to a subframe 11 and integrated onto the vehicle frame 3 via the subframe 11. This allows the suspension components to be assembled first, and then the subframe 11 is used to uniformly connect to the vehicle frame 3, facilitating assembly by the OEM.

[0048] More preferably, to improve the overall strength and rigidity of the vehicle, the subframes 11 on both sides of the frame 3 are connected to connecting beams 10. Specifically, the connecting beams 10 are connected by a screw thread, and the bolts here pass through the longitudinal beams of the frame 3 and connect to the subframes 11. In other words, the connecting beams 10 connect the frame 3, the subframes 11, the upper control arm 9, and the lower control arm 2 to form an integral structure, so that the chassis and even the entire vehicle can have higher strength and rigidity, which is suitable for medium and large-sized vehicles. Preferably, the connecting beams 10 can be made of castings.

[0049] Specific embodiments of the vehicle chassis provided by this utility model:

[0050] The implementation method of the vehicle chassis is the same as the chassis described in the steering linkage above, and will not be described in detail here.

[0051] Specific embodiments of the vehicle provided by this utility model:

[0052] The key feature of the vehicle is that it uses a chassis with the same implementation method as the aforementioned vehicle chassis, which will not be described in detail here.

[0053] Specific implementation of the steering rocker arm provided by this utility model:

[0054] The implementation method of the steering rocker arm is the same as the steering rocker arm described in the above-mentioned steering linkage, and will not be described in detail here.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steering linkage, characterized in that, It includes a left steering rocker arm and a right steering rocker arm. A steering center tie rod connects the left and right steering rocker arms. The left steering rocker arm is directly connected to the left steering side tie rod, and the right steering rocker arm is directly connected to the right steering side tie rod. The steering center tie rod is located in front of the left and right steering side tie rods. The other end of the left and right steering side tie rods is used to connect to the wheel side structure.

2. The steering linkage according to claim 1, characterized in that, One of the left and right steering arms is connected to a steering damping rod, and the other is connected to a tie rod.

3. The steering linkage according to claim 1 or 2, characterized in that, The connection points of the steering tie rod with the left steering rocker arm and with the right steering rocker arm are located directly in front of the connection points of the left steering rocker arm and the left steering tie rod, and the connection points of the right steering rocker arm and the right steering tie rod, respectively.

4. A vehicle chassis, comprising a frame, on which a steering linkage is mounted, characterized in that, The steering linkage is the steering linkage as described in any one of claims 1-3.

5. The vehicle chassis according to claim 4, characterized in that, Subframes are connected to the left and right sides of the chassis, and an upper control arm and a lower control arm located below the upper control arm are connected to the subframes, so that the upper and lower control arms are integrated onto the chassis via the subframes.

6. The vehicle chassis according to claim 5, characterized in that, The subframes on both the left and right sides are connected to crossbeams by bolts, with the bolts passing through the longitudinal beams of the frame and connecting to the subframes.

7. A vehicle, including a chassis, characterized in that, The chassis is the vehicle chassis as described in any one of claims 4-6.

8. A steering rocker arm having a vertically extending swing axis, characterized in that, The front side of the swing axis is provided with a center tie rod connecting arm for connecting the steering center link, and the rear side is provided with a side tie rod connecting arm for directly connecting the steering side tie rod.

9. The steering rocker arm according to claim 8, characterized in that, The outer side of the swing axis is provided with a damping rod connecting arm for connecting the steering damping rod or a straight rod connecting arm for connecting the straight rod.

10. The steering rocker arm according to claim 8 or 9, characterized in that, The connection point of the center tie rod connecting arm for connecting with the steering center tie rod is located directly in front of the connection point of the side tie rod connecting arm for connecting with the steering side tie rod.

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