Rear wheel suspension structure and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a rear wheel suspension structure and a vehicle. The embodiment of the utility model provides a rear wheel suspension structure which comprises a torsion beam, two steering knuckles, a steering gear and two steering pull rods. In the left-right direction of the vehicle, the two steering knuckles are rotationally arranged at the two ends of the torsion beam respectively, and the two steering knuckles are fixedly connected with the corresponding rear wheels respectively; the steering gear is connected with a vehicle body, in the left-right direction of the vehicle, one ends of the two steering pull rods are connected to the two sides of the steering gear respectively, and the other ends of the two steering pull rods are connected with the corresponding steering knuckles respectively so as to drive the two steering knuckles to rotate synchronously. Rear wheel steering can be achieved, turning of the vehicle is reduced, and the manufacturing cost of the vehicle is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a rear wheel suspension structure and a vehicle. Background Technology

[0002] In recent years, with the continuous development of vehicles, consumers' needs for vehicle use have gradually changed, and vehicle styling and human-machine design will also change accordingly. While pursuing driving pleasure, consumers also pay attention to the driving scenarios of the vehicle. Many models have begun to increase the functions and configurations of the chassis, and rear-wheel steering technology has also begun to be applied and developed.

[0003] Currently, chassis that achieves rear-wheel steering typically use a five-link suspension or an H-arm integrated link suspension, which decouples the rear wheels through the toe-in tie rod to achieve rear-wheel steering. However, the above suspension structures are usually suitable for large vehicles. For ordinary vehicles, a non-independent suspension structure is usually used, which cannot release the steering freedom of the wheels, resulting in the rear wheels being unable to steer, which in turn leads to a large turning radius of the vehicle. Utility Model Content

[0004] This application provides a rear-wheel suspension structure and vehicle that enables rear-wheel steering, reduces vehicle cornering, and lowers vehicle manufacturing costs.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, embodiments of this application provide a rear wheel suspension structure, including a torsion beam, two steering knuckles, a steering gear, and two steering tie rods. The torsion beam is connected to the vehicle body. Along the left-right direction of the vehicle, the two steering knuckles are rotatably disposed at both ends of the torsion beam, and the two steering knuckles are fixedly connected to the corresponding rear wheels. The steering gear is connected to the vehicle body. Along the left-right direction of the vehicle, one end of each of the two steering tie rods is connected to both sides of the steering gear, and the other end of each of the two steering tie rods is connected to the corresponding steering knuckles to drive the two steering knuckles to rotate synchronously.

[0007] The rear-wheel suspension structure proposed in this application embodiment has both the steering gear and the torsion beam mounted on the vehicle body. A steering tie rod connects the steering gear and the corresponding steering knuckle. The steering gear can simultaneously drive the steering tie rod to swing in the same direction, thereby causing the steering tie rod to push the corresponding steering knuckle to rotate. The rear wheels are connected to the steering knuckle; when the steering knuckle rotates, it drives the rear wheels to rotate, releasing the rear wheels' degrees of freedom and enabling rear-wheel steering, while simultaneously reducing the turning radius. In other words, when the rear wheels need to turn, the steering gear controls the steering tie rod to swing, and the steering tie rod pushes the corresponding steering knuckle to rotate, enabling the rear wheels to turn left or right.

[0008] Optionally, the steering gear includes a driver and an adapter. The driver is connected to the vehicle body along the longitudinal direction of the vehicle. One side of the adapter is connected to two steering tie rods, and the other side of the adapter is connected to the drive end of the driver. The driver is used to drive the adapter to rotate left and right relative to the vehicle body.

[0009] In the above embodiment, the driver drives the adapter to move left and right relative to the vehicle body, thereby causing the adapter to move the two steering tie rods left and right, which in turn causes the steering knuckle to rotate left and right, thereby turning the wheels and reducing the turning radius of the vehicle.

[0010] Optionally, the adapter includes a main body, a first connecting part, and a second connecting part. The main body is disposed between the first connecting part and the second connecting part. The main body is rotatably connected to the vehicle body via a pin. The first connecting part is connected to the drive end of the driver. Along the left-right direction of the vehicle, the two ends of the second connecting part are respectively connected to the corresponding steering tie rods.

[0011] In the above embodiment, when the driver drives the first connecting part to move to the left or right, the first connecting part drives the main body to rotate relative to the vehicle body around the pin shaft, thereby causing the second connecting part to drive the steering tie rod to swing, and the steering tie rod to drive the corresponding steering knuckle to rotate, thereby realizing the steering of the rear wheels.

[0012] Optionally, both steering tie rods are connected to the second connecting portion via a first ball joint.

[0013] In the above embodiments, the connection between the steering tie rod and the second connecting part via the first ball joint allows the steering tie rod to have multiple degrees of freedom in multiple directions, reducing the sticking of the steering tie rod.

[0014] Optionally, it also includes at least one mounting bracket, which includes a first part, a second part, and a third part. The first part is disposed on the torsion beam along the longitudinal direction of the vehicle. The second part and the third part are disposed opposite to each other and connected to both sides of the first part. The second part has a first hole, and the third part has a second hole. The steering knuckle is connected to the first hole and the second hole through a ball joint.

[0015] In the above embodiment, the mounting bracket provides a pivot point for the rotation of the steering knuckle, thereby enabling the rear wheels to steer.

[0016] Optionally, there are two mounting brackets, arranged opposite each other along the vertical direction of the vehicle.

[0017] In the above embodiment, along the vertical direction of the vehicle, two mounting brackets are respectively connected to the opposite sides of the steering knuckle, thereby ensuring the stability of the steering knuckle rotation.

[0018] Optionally, the torsion beam includes a crossbeam and two longitudinal beams. Along the left-right direction of the vehicle, the two longitudinal beams are respectively disposed at both ends of the crossbeam, and each steering knuckle is connected to the corresponding longitudinal beam.

[0019] Optionally, the torsion beam further includes a bushing mounting portion, which is disposed on the longitudinal beam and is used to connect with the vehicle body.

[0020] Optionally, the torsion beam further includes two shock absorber brackets, each of which is connected to the crossbeam and the corresponding longitudinal beam.

[0021] Secondly, embodiments of this application provide a vehicle including the rear wheel suspension structure described in any of the above embodiments. The vehicle in this application has the rear wheel suspension structure described in any of the above embodiments and possesses the beneficial effects of the rear wheel suspension structure described in any of the above embodiments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the rear wheel suspension structure in one embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the rear wheel suspension structure in one embodiment of this application.

[0025] [Explanation of Labels in the Attached Image]

[0026] 1. Torsion beam; 11. Crossbeam; 12. Longitudinal beam; 13. Bushing mounting section; 14. Shock absorber bracket;

[0027] 2. Steering knuckle;

[0028] 3. Steering gear; 31. Drive unit; 32. Adapter; 321. Main body; 322. First connecting part; 323. Second connecting part;

[0029] 4. Steering tie rod;

[0030] 5. Pins;

[0031] 6. First ball head;

[0032] 7. Install bracket; 71. First part; 72. Second part; 73. Third part; 74. First hole; 75. Second hole;

[0033] 8. Ball pin. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0036] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0040] Firstly, reference Figure 1 and Figure 2 This application provides a rear wheel suspension structure, which includes a torsion beam 1, two steering knuckles 2, a steering gear 3, and two steering tie rods 4. The torsion beam 1 is connected to the vehicle body. Along the left-right direction of the vehicle, the two steering knuckles 2 are rotatably mounted at both ends of the torsion beam 1, and the two steering knuckles 2 are fixedly connected to the corresponding rear wheels. The steering gear 3 is connected to the vehicle body. Along the left-right direction of the vehicle, one end of the two steering tie rods 4 is connected to both sides of the steering gear 3, and the other end of the two steering tie rods 4 is connected to the corresponding steering knuckles 2, so as to drive the two steering knuckles 2 to rotate synchronously.

[0041] The rear wheel suspension structure proposed in this application embodiment has both the steering gear 3 and the torsion beam 1 mounted on the vehicle body. The two ends of the steering tie rod 4 are connected to the steering gear 3 and the corresponding steering knuckle 2, respectively. The steering gear 3 can simultaneously drive the steering tie rod 4 to swing in the same direction, thereby causing the steering tie rod 4 to push the corresponding steering knuckle 2 to rotate. The rear wheels are connected to the steering knuckle 2. When the steering knuckle 2 rotates, it can drive the rear wheels to rotate, releasing the rear wheels' degrees of freedom and realizing the steering function of the rear wheels, while reducing the turning radius. That is, when the rear wheels need to turn, the steering gear 3 controls the steering tie rod 4 to swing, and the steering tie rod 4 pushes the corresponding steering knuckle 2 to rotate, realizing left or right turn of the rear wheels.

[0042] It should be understood that the steering gear 3 can be a rack and pinion structure, such as having both ends of the rack connected to two steering tie rods 4 respectively. When the gear drives the rack to move, it pushes the steering tie rods 4 to move, thereby achieving synchronous movement of the left and right steering tie rods 4. The steering tie rods 4 then drive the corresponding steering knuckles 2 to rotate, thereby achieving the rotation of the two rear wheels. The steering gear 3 can also be other linear actuation structures, as long as it can simultaneously control the movement of the two steering tie rods 4, and thus control the rotation of the steering knuckles 2 and the rear wheels.

[0043] Optionally, refer to Figure 1 and Figure 2 The steering gear 3 includes a driver 31 and an adapter 32. The driver 31 is connected to the vehicle body along the longitudinal direction of the vehicle. One side of the adapter 32 is connected to two steering tie rods 4, and the other side of the adapter 32 is connected to the drive end of the driver 31. The driver 31 is used to drive the adapter 32 to rotate left and right relative to the vehicle body.

[0044] The actuator 31 can be a linear actuator, such as a lead screw or linear motor. The actuator 31 drives the adapter 32 to move left and right relative to the vehicle body, thereby causing the adapter 32 to swing the two steering tie rods 4 left and right, which in turn causes the steering knuckle 2 to rotate left and right, thus achieving wheel steering and reducing the turning radius of the vehicle. For example, the adapter 32 can be constructed as a four-bar linkage.

[0045] Optionally, refer to Figure 2 The adapter 32 includes a main body 321, a first connecting part 322 and a second connecting part 323. The main body 321 is located between the first connecting part 322 and the second connecting part 323. The main body 321 is rotatably connected to the vehicle body through a pin 5. The first connecting part 322 is connected to the drive end of the driver 31. Along the left and right direction of the vehicle, the two ends of the second connecting part 323 are respectively connected to the corresponding steering tie rods 4.

[0046] The main body 321, the first connecting part 322, and the second connecting part 323 are integrally formed. When the driver 31 drives the first connecting part 322 to move to the left or right, the first connecting part 322 drives the main body 321 to rotate around the pin 5 relative to the vehicle body. The main body 321 drives the second connecting part 323 to rotate synchronously. The second connecting part 323 drives the steering tie rod 4 to swing. The steering tie rod 4 drives the corresponding steering knuckle 2 to rotate, thereby realizing the steering of the rear wheels.

[0047] For example, the pin 5 can be fixed to the vehicle body, and the main body 321 is provided with a mounting hole. The main body 321 is sleeved on the pin 5 through the mounting hole, thereby realizing the rotational connection between the adapter 32 and the vehicle body, so that the adapter 32 can rotate relative to the vehicle body, thereby driving the swing of the steering tie rod 4.

[0048] Optionally, refer to Figure 1 and Figure 2 Both steering tie rods 4 and the second connecting part 323 are connected by the first ball joint 6.

[0049] The steering tie rod 4 is connected to the second connecting part 323 via the first ball joint 6, which allows the steering tie rod 4 to have multiple degrees of freedom in multiple directions, such as the steering tie rod 4 swinging in the forward and backward or up and down directions of the vehicle, reducing the sticking of the steering tie rod 4 and improving the stability of the rear wheel steering.

[0050] Optionally, refer to Figure 1 and Figure 2The rear wheel suspension structure also includes at least one mounting bracket 7. The mounting bracket 7 includes a first part 71, a second part 72 and a third part 73. The first part 71 is located on the torsion beam 1 along the longitudinal direction of the vehicle. The second part 72 and the third part 73 are arranged opposite to each other and connected to the two sides of the first part 71. The second part 72 is provided with a first hole 74 and the third part 73 is provided with a second hole 75. The steering knuckle 2 is connected to the first hole 74 and the second hole 75 through a ball joint 8.

[0051] The mounting bracket 7 has a U-shaped structure. Along the front-rear direction of the vehicle, the first hole 74 passes through the second part 72, and the second hole 75 passes through the third part 73. The steering knuckle 2 is connected to the first hole 74 and the second hole 75 through the ball pin 8. The mounting bracket 7 provides a pivot point for the rotation of the steering knuckle 2, thereby realizing the steering of the rear wheels.

[0052] In other words, a mounting bracket 7 is set on the torsion beam 1, the steering knuckle 2 is assembled on the mounting bracket 7, and the steering knuckle 2 is connected to the mounting bracket 7 through the ball pin 8, which releases the degree of freedom of the steering knuckle 2 in the left and right directions of the vehicle, realizes the rotation of the steering knuckle 2 and the wheel, thereby realizing the rear wheel steering and reducing the turning radius.

[0053] Optionally, refer to Figure 2 There are two mounting brackets 7, which are set opposite each other along the vertical direction of the vehicle.

[0054] Along the vertical direction of the vehicle, two mounting brackets 7 are connected to the opposite sides of the steering knuckle 2 respectively, thereby improving the stability of the steering knuckle 2's rotation.

[0055] In this application, two mounting brackets 7 are added to the torsion beam 1, and ball pins 8 are provided on the steering knuckle 2. The mounting brackets are bolted to the corresponding ball pins 8. The driver 31 drives the adapter 32 to rotate, and the adapter 32 drives the steering tie rod 4 to swing. The steering tie rod 4 drives the steering knuckle 2 to rotate left and right, thereby realizing the control of the steering knuckle 2 to rotate in the vertical direction of the vehicle. That is to say, the steering of the left and right rear wheels is realized by the force input of the steering tie rod 4.

[0056] Optionally, refer to Figure 1 The torsion beam 1 includes a crossbeam 11 and two longitudinal beams 12. Along the left-right direction of the vehicle, the two longitudinal beams 12 are respectively located at both ends of the crossbeam 11, and each steering knuckle 2 is connected to the corresponding longitudinal beam 12.

[0057] The torsion beam 1 includes a crossbeam 11 and two longitudinal beams 12 connected to both ends of the crossbeam 11. The structure is simple, reduces costs, and saves space.

[0058] Optionally, refer to Figure 1 The torsion beam 1 also includes a bushing mounting part 13, which is located on the longitudinal beam 12 and is used to connect with the vehicle body.

[0059] The torsion beam 1 is elastically hinged to the vehicle body through the bushing mounting part 13, which can reduce the impact force on the wheels acting directly on the vehicle body and improve the stability of the vehicle body.

[0060] Optionally, refer to Figure 1 The torsion beam 1 also includes two shock absorber brackets 14, each of which is connected to the crossbeam 11 and the corresponding longitudinal beam 12.

[0061] The shock absorber bracket 14 is fixed at the connection between the crossbeam 11 and the corresponding longitudinal beam 12, which can improve the installation strength of the shock absorber bracket 14, thereby improving the strength between the shock absorbers.

[0062] Secondly, embodiments of this application provide a vehicle including the rear wheel suspension structure described in any of the above embodiments.

[0063] The vehicle in this application embodiment has the rear wheel suspension structure described in any of the above embodiments, and has the beneficial effects of the rear wheel suspension structure described in any of the above embodiments.

[0064] The rear wheel suspension structure in this application utilizes mounting brackets 7 on both sides of the torsion beam 1. The steering knuckle 2 is connected to the mounting brackets 7 via ball joints 8, releasing the steering knuckle 2's vertical freedom. The rear wheels are then fixed to the steering knuckle 2. When the steering knuckle 2 rotates, the rear wheels rotate synchronously with it. The actuator 31 drives the adapter 32 to rotate. Simultaneously, the adapter 32's rotation relative to the vehicle body drives the steering tie rod 4 to swing, which in turn rotates the steering knuckle 2, thus achieving rear wheel steering and reducing the turning radius. The rear wheel suspension structure in this application is simple to design, low in cost, and occupies little space.

[0065] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0066] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0067] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0068] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A rear wheel suspension structure characterized by comprising: The application relates to a torsion beam (1) connected with a vehicle body, wherein the torsion beam is provided with at least one mounting bracket (7) on both sides in the left-right direction of the vehicle; two knuckles (2) are arranged at the two ends of the torsion beam (1) in the left-right direction of the vehicle and are fixedly connected with corresponding rear wheels; a steering gear (3) and two steering tie rods (4) are connected with the vehicle body in the left-right direction of the vehicle, one end of each of the two steering tie rods (4) is connected with the two sides of the steering gear (3), and the other end of each of the two steering tie rods (4) is connected with the corresponding knuckle (2) to drive the two knuckles (2) to synchronously rotate; the mounting bracket (7) comprises a first part (71), a second part (72) and a third part (73), the first part (71) is arranged on the torsion beam (1) in the front-rear direction of the vehicle, the second part (72) and the third part (73) are oppositely arranged and connected with the two sides of the first part (71), the second part (72) is provided with a first hole (74), the third part (73) is provided with a second hole (75), and the knuckle (2) is connected with the first hole (74) and the second hole (75) through a ball pin (8). The steering gear (3) comprises a driver (31) and a connecting piece (32), the driver (31) is connected with the vehicle body in the front-rear direction of the vehicle, one side of the connecting piece (32) is connected with the two steering tie rods (4), the other side of the connecting piece (32) is connected with the driving end of the driver (31), and the driver (31) is used for driving the connecting piece (32) to rotate left and right relative to the vehicle body. The connecting piece (32) comprises a main body part (321), a first connecting part (322) and a second connecting part (323), the main body part (321) is arranged between the first connecting part (322) and the second connecting part (323), the main body part (321) is rotatably connected with the vehicle body through a pin shaft (5), the first connecting part (322) is connected with the driving end of the driver (31), and the two ends of the second connecting part (323) are connected with the corresponding steering tie rods (4) in the left-right direction of the vehicle. The two steering tie rods (4) are connected with the second connecting part (323) through first ball heads (6). The mounting bracket (7) is provided with two mounting brackets (7) arranged oppositely in the up-down direction of the vehicle.

2. The rear wheel suspension structure according to claim 1, characterized by The torsion beam (1) comprises a cross beam (11) and two longitudinal beams (12), the two longitudinal beams (12) are arranged at the two ends of the cross beam (11) in the left-right direction of the vehicle, and each knuckle (2) is connected with the corresponding longitudinal beam (12).

3. The rear wheel suspension structure according to claim 2, characterized by The torsion beam (1) further comprises a bushing mounting part (13) arranged on the longitudinal beam (12), and the bushing mounting part (13) is used for being connected with the vehicle body.

4. The rear wheel suspension structure according to claim 3, characterized by ​ 5. The rear wheel suspension structure according to claim 1, characterized by ​ 6. The rear wheel suspension structure according to claim 1, characterized by ​ 7. The rear wheel suspension structure according to claim 6, characterized by ​ 8. The rear wheel suspension structure according to claim 6, characterized by The torsion beam (1) further comprises two shock absorber supports (14), each of which is connected with the cross beam (11) and the corresponding longitudinal beam (12).

9. A vehicle characterized by comprising: The rear wheel suspension structure according to any one of claims 1-8 is included.

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