A large-angle rear-swing H-arm suspension structure, steering method and vehicle

Abstract

This invention discloses a large-angle rear-wheel steering H-arm suspension structure, steering method, and vehicle. It includes a subframe, an H-arm, an upper control arm, a lower tie rod, a steering tie rod, an inner steering bracket, and an outer steering bracket. The inner steering bracket is connected to the rear point of the outer side of the H-arm, the outer point of the upper control arm, and the upper point of the lower tie rod. The front and rear points of the inner side of the H-arm and the inner point of the upper control arm are connected to the subframe. The lower point of the lower tie rod is connected to the front point of the outer side of the H-arm. The steering tie rod is connected to the outer steering bracket, and the outer and inner steering brackets are connected by a ball joint. This invention ensures the comfort advantages of the H-arm suspension while achieving large-angle rear-wheel steering.

Description

Technical Field

[0001] This invention belongs to the field of automotive suspension technology, specifically relating to a large-angle rear H-arm suspension structure and a vehicle having it. Background Technology

[0002] The standard H-arm suspension structure falls under the category of multi-link suspensions. Due to the complexity of the linkage, the suspension lacks a physical kingpin axis, instead employing a virtual one. Furthermore, due to kinematic decoupling, the spatial angle of this virtual kingpin axis varies significantly. This results in substantial changes in the suspension's hard point and camber characteristics during steering, limiting its ability to handle large steering angles. However, this suspension offers relatively good mechanical decoupling and thus provides excellent comfort, making it commonly used in rear suspensions. Rear-wheel steering typically employs a five-link suspension. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the aforementioned background technology and provide a large-angle rear H-arm suspension structure, steering method, and vehicle.

[0004] The technical solution adopted in this invention is: a large-angle rear-swing H-arm suspension structure, including a subframe, an H-arm, an upper control arm, a lower tie rod, a steering tie rod, an inner steering bracket, and an outer steering bracket. The inner steering bracket is connected to the rear point of the outer side of the H-arm, the outer point of the upper control arm, and the upper point of the lower tie rod. The front and rear points of the inner side of the H-arm and the inner point of the upper control arm are connected to the subframe. The lower point of the lower tie rod is connected to the front point of the outer side of the H-arm. The steering tie rod is connected to the outer steering bracket, and the outer steering bracket and the inner steering bracket are connected by a ball joint.

[0005] In a further preferred configuration, the upper part of the inner steering bracket has a first arm and a third arm, the first arm having an upper connection point for the outer steering bracket, and the third arm having an upper connection point for the pull rod. The lower part of the inner steering bracket has a second arm and a fourth arm, the second arm having a lower connection point for the outer steering bracket, and the fourth arm having a rear outer connection point for the H-arm.

[0006] In a further preferred configuration, the other ends of the first and third arms serve as connection points for the upper control arm, and the space between the other ends of the first and third arms forms a space to accommodate the upper control arm.

[0007] In a further preferred configuration, the upper point connection point of the pull rod is connected to the upper point of the pull rod, and the rear outer point connection point of the H-arm is connected to the outer rear point of the H-arm.

[0008] In a further preferred configuration, the upper control arm connection point is connected to the outer point of the upper control arm.

[0009] In a further preferred configuration, the outer steering bracket has a first connecting portion and a second connecting portion, which are parallel to each other. The first connecting portion and the second connecting portion are located at the upper and lower parts of the outer steering bracket, respectively. The first connecting portion has an upper connecting point for the inner steering bracket, and the second connecting portion has a lower connecting point for the inner steering bracket.

[0010] In a further preferred configuration, the lower part of the outer steering bracket is provided with a third connecting part, which is located on one side of the second connecting part, and a steering tie rod connection point is provided on the third connecting part.

[0011] In a further preferred configuration, the upper connection point of the inner steering bracket is connected to the upper connection point of the outer steering bracket by a ball pin, the lower connection point of the inner steering bracket is connected to the lower connection point of the outer steering bracket by a ball pin, and the steering tie rod connection point is connected to one end of the steering tie rod.

[0012] A steering method for a large-angle rear-swing H-arm suspension structure includes the following steps:

[0013] During suspension steering, the steering tie rod pulls the outer steering bracket to move, and the outer steering bracket rotates around the line connecting the two ball pins of the outer and inner steering brackets.

[0014] A vehicle comprising the aforementioned large-angle rear H-arm suspension structure.

[0015] This invention is based on an H-arm suspension and is a suspension structure that enables large-angle rear-wheel steering. It can ensure the comfort advantages of the H-arm suspension while also achieving large-angle rear-wheel steering. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is an exploded view of the parts of this invention;

[0018] Figure 3 This is a schematic diagram showing the connection between the inner point of the upper control arm, the inner point of the H-arm, the steering tie rod, and the subframe.

[0019] Figure 4 This is a schematic diagram showing the connection between the inner steering bracket and the upper control arm, the upper point of the lower pull rod, and the outer rear point of the H-arm.

[0020] Figure 5 The diagram shows the connection between the outer and inner steering brackets via two ball joints, and the connection between the outer steering bracket and the steering tie rod.

[0021] Figure 6 This is a schematic diagram of the inner steering bracket structure;

[0022] Figure 7 This is a schematic diagram of the outer steering bracket structure;

[0023] Figure 8 This is a schematic diagram showing the connection between the inner and outer steering brackets.

[0024] In the diagram, 1-subframe, 2-H-arm, 3-upper control arm, 4-lower lever, 5-steering tie rod, 6-inner steering bracket (61-first arm, 611-upper connection point of outer steering bracket, 62-second arm, 621-lower connection point of outer steering bracket, 63-third arm, 631-upper connection point of lower lever, 64-upper control arm connection point, 65-fourth arm, 651-rear outer connection point of H-arm), 7-outer steering bracket (71-first connecting part, 711-upper connection point of inner steering bracket, 72-second connecting part, 721-lower connection point of inner steering bracket, 73-third connecting part, 731-steering tie rod connection point), 8-ball pin. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but these descriptions do not constitute a limitation on the present invention.

[0026] Example 1

[0027] like Figure 1-8 As shown, the present invention provides a large-angle rear-swing H-arm suspension structure, including an outer steering bracket 7 and an inner steering bracket 6 connected by a ball pin 8. The inner steering bracket 6 is connected to the outer rear point of the H-arm 2, the outer point of the upper control arm 3, and the upper point of the lower lever 4. The inner front and rear points of the H-arm 2 and the inner point of the upper control arm 3 are connected to the bracket. The lower point of the lower lever 4 is connected to the outer front point of the H-arm 2. The steering tie rod 5 is connected to the outer steering bracket 7.

[0028] In some optional embodiments, the upper part of the inner steering bracket 6 consists of a first arm 61 and a third arm 63. The first arm 61 has an upper connection point 611 on the outer steering bracket, and the third arm 63 has an upper connection point 631 on the pull-down rod. The lower part of the inner steering bracket 6 consists of a second arm 62 and a fourth arm 65. The second arm 62 has a lower connection point 621 on the outer steering bracket, and the fourth arm 65 has a rear outer connection point 651 on the H-arm. The upper connection point 631 on the pull-down rod is connected to the upper point of the pull-down rod 4, and the rear outer connection point 651 on the H-arm is connected to the rear outer point of the H-arm 2.

[0029] In some alternative embodiments, the other ends of the first arm 61 and the third arm 63 serve as the upper control arm connection point 64, and the space between the other ends of the first arm 61 and the third arm 63 forms a space for accommodating the upper control arm 3. The upper control arm connection point 64 is connected to the outer point of the upper control arm 3.

[0030] In some optional embodiments, the outer steering bracket 7 has a first connecting portion 71 and a second connecting portion 72, which are parallel to each other. The first connecting portion 71 and the second connecting portion 72 are located at the upper and lower parts of the outer steering bracket 7, respectively. The first connecting portion 71 is provided with an upper connecting point 711 of the inner steering bracket, and the second connecting portion 72 is provided with a lower connecting point 721 of the inner steering bracket.

[0031] In some optional embodiments, the lower part of the outer steering bracket 7 is further provided with a third connecting part 73, which is located on one side of the second connecting part 72, and a steering tie rod connection point 731 is provided on the third connecting part 73.

[0032] In some optional embodiments, the upper connection point 711 of the inner steering bracket and the upper connection point 611 of the outer steering bracket are connected by a ball pin 8, the lower connection point 721 of the inner steering bracket and the lower connection point 621 of the outer steering bracket are connected by a ball pin 8, and the steering tie rod connection point 731 is connected to one end of the steering tie rod 5.

[0033] Example 2

[0034] This invention provides a steering method for a large-angle rear-hinged H-arm suspension structure, comprising the following steps:

[0035] During suspension steering, the steering tie rod 5 pulls the outer steering bracket 7 to move. The outer steering bracket 7 rotates around the line connecting the two ball pins 8 of the outer steering bracket 7 and the inner steering bracket 6. This line is the second kingpin axis of the suspension (e.g., Figure 5 As shown, the first kingpin axis of the suspension is as follows: Figure 3 As shown, the inner steering bracket 6 does not participate in the steering motion, and the relative positional relationship between the inner steering bracket 6 and the H-arm 2, the upper control arm 3, and the lower tie rod 4 remains unchanged; the original bushings and ball pins in the H-arm 2 suspension do not participate in the steering deformation, the hard point of the inner rod system remains unchanged, the suspension K characteristic is fully decoupled, the degree of freedom is released, and the steering angle of the H-arm suspension can be increased at the same time.

[0036] During vertical jump, H-arm 2, lower lever 4, upper control arm 3, and steering tie rod 5 are connected through inner steering bracket 6 and outer steering bracket 7, and the suspension motion relationship remains unchanged, and the suspension K&C characteristics remain unchanged.

[0037] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A large-angle rear-swing H-arm suspension structure, comprising a subframe (1), an H-arm (2), an upper control arm (3), a lower tie rod (4), and a steering tie rod (5), characterized in that: It also includes an inner steering bracket (6) and an outer steering bracket (7). The inner steering bracket (6) is connected to the rear point of the outer side of the H-arm (2), the outer point of the upper control arm (3), and the upper point of the pull rod (4). The front and rear points of the inner side of the H-arm (2) and the inner point of the upper control arm (3) are connected to the subframe (1). The lower point of the pull rod (4) is connected to the front point of the outer side of the H-arm (2). The steering tie rod (5) is connected to the outer steering bracket (7). The outer steering bracket (7) and the inner steering bracket (6) are connected by a ball joint (8). The upper part of the inner steering bracket (6) consists of a first arm (61) and a third arm (63). The first arm (61) is provided with an upper connection point (611) for the outer steering bracket, and the third arm (63) is provided with an upper connection point (631) for the pull rod. The lower part of the inner steering bracket (6) consists of a second arm (62) and a fourth arm (65). The second arm (62) is provided with a lower connection point (621) for the outer steering bracket, and the fourth arm (65) is provided with an outer connection point (651) for the H-arm. The upper point connection point (631) of the pull rod is connected to the upper point of the pull rod (4), and the rear outer point connection point (651) of the H arm is connected to the outer rear point of the H arm (2).

2. The large-angle rear-hinged H-arm suspension structure according to claim 1, characterized in that: The other ends of the first arm (61) and the third arm (63) serve as the upper control arm connection point (64), and the space between the other ends of the first arm (61) and the third arm (63) forms a space to accommodate the upper control arm (3).

3. The large-angle rear-hinged H-arm suspension structure according to claim 2, characterized in that: The upper control arm connection point (64) is connected to the outer point of the upper control arm (3).

4. The large-angle rear-hinged H-arm suspension structure according to claim 1, characterized in that: The outer steering bracket (7) has a first connecting part (71) and a second connecting part (72), which are parallel to each other. The first connecting part (71) and the second connecting part (72) are located at the upper and lower parts of the outer steering bracket (7), respectively. The first connecting part (71) is provided with an upper connecting point (711) of the inner steering bracket, and the second connecting part (72) is provided with a lower connecting point (721) of the inner steering bracket.

5. A large-angle rear-hinged H-arm suspension structure according to claim 4, characterized in that: The lower part of the outer steering bracket (7) is also provided with a third connecting part (73), which is located on one side of the second connecting part (72), and the third connecting part (73) is provided with a steering tie rod connection point (731).

6. A large-angle rear-hinged H-arm suspension structure according to claim 5, characterized in that: The upper connection point (711) of the inner steering bracket and the upper connection point (611) of the outer steering bracket are connected by ball pin (8), the lower connection point (721) of the inner steering bracket and the lower connection point (621) of the outer steering bracket are connected by ball pin (8), and the steering tie rod connection point (731) is connected to one end of the steering tie rod (5).

7. The steering method of a large-angle rear-hinged H-arm suspension structure according to claim 1, characterized in that: The following steps are involved: During the suspension steering process, the steering tie rod (5) pulls the outer steering bracket (7) to move, and the outer steering bracket (7) rotates around the line connecting the two ball pins (8) of the outer steering bracket (7) and the inner steering bracket (6).

8. A vehicle, characterized in that, Including the large-angle rear H-arm suspension structure as described in any one of claims 1 to 6.

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