Large-angle backward-turning H-arm suspension structure, steering method and vehicle

Abstract

The invention discloses a large-angle backward-turning H-arm suspension structure, a steering method and a vehicle. The device comprises an auxiliary frame, an H arm, an upper control arm, a lower pull rod, a steering pull rod, an inner side steering bracket and an outer side steering bracket, wherein the inner side steering bracket is connected with an outer side rear point of the H arm, an outer point of the upper control arm and an upper point of the lower pull rod; the front point and the rear point of the inner side of the H arm and the inner point of the upper control arm are connected with an auxiliary frame, and the lower point of the lower pull rod is connected with the front point of the outer side of the H arm. The steering pull rod is connected with the outer side steering support, and the outer side steering support and the inner side steering support are connected through a ball pin. The advantage of comfort of the H-arm suspension can be guaranteed, and the large-angle rear wheel steering function can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile suspension, and in particular relates to a large-angle rear-rotating H-arm suspension structure and a vehicle having the same. Background Art

[0002] The ordinary H-arm suspension structure belongs to the category of multi-link suspension. Due to the complex rod system, the suspension has no physical kingpin axis, and uses a virtual kingpin axis. In addition, due to the suspension kinematic decoupling, the spatial angle of the virtual kingpin axis changes greatly, resulting in a large change in the suspension hard point during the steering process, and a large change in the suspension K characteristics such as steering camber. The suspension does not support large-angle steering functions. However, the suspension is fully decoupled in mechanics and has good comfort, so it is mostly used in rear suspensions. Rear-wheel steering generally uses a five-link suspension. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a large-angle rear-turn H-arm suspension structure, a steering method and a vehicle.

[0004] The technical solution adopted by the present invention is: a large-angle rear-turn H-arm suspension structure, comprising 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, wherein the inner steering bracket is connected to the outer rear point of the H-arm, the outer point of the upper control arm and the upper point of the lower tie rod; the inner front point and rear point of the H-arm and the inner point of the upper control arm are connected to the subframe, and the lower point of the lower tie rod is connected to the outer front point 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 pin.

[0005] A further preferred structure is that the upper part of the inner steering bracket is respectively composed of a first arm and a third arm, the first arm is provided with an upper connection point of the outer steering bracket, the third arm is provided with an upper point connection point of the lower pull rod, the lower part of the inner steering bracket is respectively composed of a second arm and a fourth arm, the second arm is provided with a lower connection point of the outer steering bracket, and the fourth arm is provided with a rear outer point connection point of the H arm.

[0006] In a further preferred structure, the other ends of the first arm and the third arm serve as connection points for the upper control arm, and a space for accommodating the upper control arm is formed between the other ends of the first arm and the third arm.

[0007] In a further preferred structure, the upper point connection point of the lower pull rod is connected to the upper point of the lower 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 structure, the upper control arm connection point is connected to an outer point of the upper control arm.

[0009] A further preferred structure is that the outer steering bracket comprises a first connection part and a second connection part, the first connection part and the second connection part are parallel to each other, the first connection part and the second connection part are respectively located at the upper part and the lower part of the outer steering bracket, the first connection part is provided with an upper connection point of the inner steering bracket, and the second connection part is provided with a lower connection point of the inner steering bracket.

[0010] In a further preferred structure, a third connection portion is further provided at the lower portion of the outer steering bracket, the third connection portion is located at one side of the second connection portion, and a steering tie rod connection point is provided on the third connection portion.

[0011] A further preferred structure is that the upper connection point of the inner steering bracket is connected to the upper connection point of the outer steering bracket via a ball pin, the lower connection point of the inner steering bracket is connected to the lower connection point of the outer steering bracket via a ball pin, and the steering rod connection point is connected to one end of the steering rod.

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

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

[0014] A vehicle comprises the large-angle rear-swing H-arm suspension structure.

[0015] The present invention is based on an H-arm suspension and is a suspension structure capable of large-angle rear wheel steering. It can ensure the comfort advantage of the H-arm suspension and realize the large-angle rear wheel steering function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the explosion of the parts of the present invention;

[0018] Figure 3 It is a schematic diagram of the connection between the inner point of the upper control arm, the inner point of the H arm, the steering rod and the subframe;

[0019] Figure 4 It is a schematic diagram of the connection between the inner steering bracket, the upper control arm, the upper point of the lower tie rod, and the outer rear point of the H arm;

[0020] Figure 5 The outer steering bracket is connected to the inner steering bracket through two upper and lower ball pins, and the outer steering bracket is connected to the steering tie rod;

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

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

[0023] Figure 8 It is a schematic diagram of the connection between the inner steering bracket and the outer steering bracket.

[0024] In the figure, 1-subframe, 2-H arm, 3-upper control arm, 4-lower tie rod, 5-steering 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 point connection point of lower tie rod, 64-upper control arm connection point, 65-fourth arm, 651-rear outer point connection point of H arm), 7-outer steering bracket (71-first connection part, 711-upper connection point of inner steering bracket, 72-second connection part, 721-lower connection point of inner steering bracket, 73-third connection part, 731-steering rod connection point), 8-ball pin. DETAILED DESCRIPTION

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

[0026] Embodiment 1

[0027] like Figure 1-8 As shown, the present invention provides a large-angle rear-turn 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 tie rod 4; the inner front point and rear point of the H arm 2, the inner point of the upper control arm 3 are connected to the bracket, and the lower point of the lower tie rod 4 is connected to the outer front point of the H arm 2; the steering rod 5 is connected to the outer steering bracket 7.

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

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

[0030] In some optional embodiments, the outer steering bracket 7 includes a first connection part 71 and a second connection part 72, the first connection part 71 and the second connection part 72 are parallel to each other, the first connection part 71 and the second connection part 72 are respectively located at the upper and lower parts of the outer steering bracket 7, an inner steering bracket upper connection point 711 is provided on the first connection part 71, and an inner steering bracket lower connection point 721 is provided on the second connection part 72.

[0031] In some optional embodiments, a third connection portion 73 is further provided at the lower portion of the outer steering bracket 7 . The third connection portion 73 is located at one side of the second connection portion 72 . A steering rod connection point 731 is provided on the third connection portion 73 .

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

[0033] Embodiment 2

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

[0035] During the steering process of the suspension, the steering tie rod 5 pulls the outer steering bracket 7 to move, and the outer steering bracket 7 rotates around the connecting line of the two ball pins 8 of the outer steering bracket 7 and the inner steering bracket 6. This connecting line is the second kingpin axis of the suspension (such as Figure 5 As shown, the physical kingpin axis), 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 movement, and the relative position 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 bushing and ball pin 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.

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

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A large-angle rear-turn 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: The vehicle also comprises an inner steering bracket (6) and an outer steering bracket (7), wherein 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 tie rod (4); the inner front point and rear point of the H arm (2), the inner point of the upper control arm (3) are connected to the subframe (1), and the lower point of the lower tie rod (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), and the outer steering bracket (7) and the inner steering bracket (6) are connected by a ball pin (8).

2. The large-angle rear-swing H-arm suspension structure according to claim 1, characterized in that: The upper part of the inner steering bracket (6) comprises a first arm (61) and a third arm (63), the first arm (61) is provided with an upper connection point (611) of the outer steering bracket, the third arm (63) is provided with an upper point connection point (631) of the lower pull rod, the lower part of the inner steering bracket (6) comprises a second arm (62) and a fourth arm (65), the second arm (62) is provided with a lower connection point (621) of the outer steering bracket, and the fourth arm (65) is provided with a rear outer point connection point (651) of the H arm.

3. The large-angle rear-swing H-arm suspension structure according to claim 2 is characterized in that: The other ends of the first arm (61) and the third arm (63) serve as upper control arm connection points (64), and a space for accommodating the upper control arm (3) is formed between the other ends of the first arm (61) and the third arm (63).

4. The large-angle rear-swing H-arm suspension structure according to claim 2 is characterized in that: The upper point connection point (631) of the lower pull rod is connected to the upper point of the lower 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).

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

6. The large-angle rear-swing H-arm suspension structure according to claim 3 is characterized in that: The outer steering bracket (7) comprises a first connecting portion (71) and a second connecting portion (72), the first connecting portion (71) and the second connecting portion (72) are parallel to each other, the first connecting portion (71) and the second connecting portion (72) are respectively located at the upper part and the lower part of the outer steering bracket (7), the first connecting portion (71) is provided with an inner steering bracket upper connecting point (711), and the second connecting portion (72) is provided with an inner steering bracket lower connecting point (721).

7. The large-angle rear-swing H-arm suspension structure according to claim 6, characterized in that: A third connection part (73) is also provided at the lower part of the outer steering bracket (7), and the third connection part (73) is located on one side of the second connection part (72). A steering tie rod connection point (731) is provided on the third connection part (73).

8. The large-angle rear-swing H-arm suspension structure according to claim 7, characterized in that: The inner steering bracket upper connection point (711) is connected to the outer steering bracket upper connection point (611) via a ball pin (8), the inner steering bracket lower connection point (721) is connected to the outer steering bracket lower connection point (621) via a ball pin (8), and the steering tie rod connection point (731) is connected to one end of the steering tie rod (5).

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

10. A vehicle, characterized in that: It comprises a large-angle rear-swing H-arm suspension structure as described in claims 1 to 8.

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