Rear knuckle assembly, suspension system and vehicle

Abstract

The invention discloses a rear steering knuckle assembly, a suspension system and a vehicle, the rear steering knuckle assembly comprises a rear steering knuckle main body and a first connecting arm, the positions of original shock absorbers in a rear suspension are correspondingly located on the upper portion, and the two shock absorbers which are oppositely arranged are arranged in the space above tires respectively; on the premise that the distance between the two rear wheels is not changed, the relative distance between the two rear knuckle bodies is kept relatively stable, the first connecting arm provides the connecting position of the shock absorber above a tire, superposition of the space needed by the shock absorber and the space needed by the knuckle bodies is effectively avoided, and the shock absorber and the knuckle bodies are more stable. The distance between the two first connecting ends which are oppositely arranged is effectively increased, then the distance between the two shock absorbers which are oppositely arranged is increased, more rear row space is released to passengers in the width direction of a vehicle body, the comfortable experience of the passengers in the width direction is improved, and the comfort of the passengers in the width direction is improved. And the development freedom degree of different vehicle types can be improved through more space, and the applicability is high.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle suspension systems, and in particular to a rear steering knuckle assembly, a suspension system and a vehicle. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present disclosure. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present disclosure.

[0003] The rear knuckle assembly is an important component of the chassis system of a rear-wheel drive vehicle. It is mainly used to connect the rear wheels and the suspension system, and is responsible for transmitting the steering torque so that the vehicle can steer. The rear knuckle assembly not only performs the steering function, but also supports the weight of the wheel. The working principle of the rear knuckle assembly is to transmit the steering torque through the driver's manipulation of the steering wheel, and then transmit the torque to the rear knuckle assembly through the steering mechanism (such as the steering tie rod). When the steering knuckle receives the steering torque, it will be connected to the steering tie rod through the ball joint, causing the wheel to deflect relative to the body, thereby achieving the steering of the vehicle.

[0004] During the vehicle model development process, the width direction space for rear passengers cannot meet the comfort requirements, which leads to users complaining about the small rear space and inconvenience in movement after the vehicle is delivered. Currently, the shock absorber and rear steering knuckle assembly occupy space in the width direction of the vehicle body respectively, and are also limited by the layout of related structures such as the five-link structure, resulting in high limitations in the width direction of the interior space, affecting the passenger experience in the width direction and limiting vehicle model development. Summary of the invention

[0005] In view of the defects existing in the prior art, the present application provides a rear steering knuckle assembly, a suspension system and a vehicle to solve the problem in the prior art that the rear steering knuckle assembly affects the interior space of the vehicle in the width direction of the vehicle.

[0006] The above-mentioned purpose of the present application is mainly achieved through the following technical solutions:

[0007] In one aspect, the present application provides a rear steering knuckle assembly, the rear steering knuckle assembly comprising:

[0008] A rear knuckle body, the rear knuckle body being arranged corresponding to the wheel;

[0009] A first connecting arm, the first connecting arm is fixedly arranged on the rear steering knuckle body, and the first connecting arm has a first connecting end extending on the upper part of the rear steering knuckle body, the first connecting end is used to support and connect the shock absorber, and in the two rear steering knuckle assemblies arranged opposite to each other along the width direction of the vehicle body, the distance between the two first connecting ends arranged opposite to each other is not less than the distance between the two rear steering knuckle bodies arranged opposite to each other.

[0010] In an optional embodiment, an arc segment is provided in the middle portion of the first connecting arm, and in a reference plane formed by the width direction and the height direction of the vehicle body, the first connecting arm has a first avoidance space toward the wheel.

[0011] In an optional embodiment, a first mounting surface is provided on the rear steering knuckle body, the first mounting surface is used for fixedly connecting the wheel, and the center point of the first mounting surface is located on the rotation axis of the wheel.

[0012] In an optional embodiment, the distance between the first connecting end and the center point of the first mounting surface is greater than the distance between the outer peripheral surface of the wheel and the center point of the first mounting surface.

[0013] In an optional embodiment, the center points of the first connecting end and the first mounting surface are respectively on the extension lines of the center line of the shock absorber.

[0014] In an optional embodiment, a bending section is further provided in the middle portion of the first connecting arm, and the first connecting arm has a second avoidance space in a reference plane formed by the length direction and the height direction of the vehicle body.

[0015] In an optional embodiment, the rear steering knuckle body is provided with a plurality of connection positions, and the connection positions are used to set a control arm and a connecting rod movably connected between the rear steering knuckle body and the rear sub-frame assembly.

[0016] In an optional embodiment, the first connecting arm is integrally provided with the rear steering knuckle body.

[0017] On the other hand, the present application also provides a suspension system, which includes the rear steering knuckle assembly as described above.

[0018] Based on the same inventive concept, the present application also provides a vehicle, which includes the suspension system as described above.

[0019] Compared with the prior art, the advantages of this application are:

[0020] The rear steering knuckle assembly in the present application includes a rear steering knuckle body and a first connecting arm, the rear steering knuckle body is used to be arranged corresponding to the wheel, the first connecting arm is fixedly arranged on the rear steering knuckle body, and the first connecting arm has a first connecting end extending on the upper part of the rear steering knuckle body, the first connecting end is used to support and connect the shock absorber, and in the two rear steering knuckle assemblies arranged relatively along the width direction of the vehicle body, the distance between the two relatively arranged first connecting ends is not less than the distance between the two relatively arranged rear steering knuckle bodies, after the arrangement of the rear steering knuckle assembly is completed, the position of the original shock absorber in the rear suspension is correspondingly located above, and the two relatively arranged shock absorbers The shock absorbers are arranged respectively using the space above the tires. Under the premise that the distance between the two rear wheels does not change, the relative distance between the two rear steering knuckle bodies remains relatively stable. The first connecting arm provides a connection position for the shock absorber above the tire. In the width direction of the vehicle body, the overlapping of the space required for the shock absorber and the steering knuckle body is effectively avoided, and the distance between the two first connecting ends arranged relatively to each other is effectively increased, thereby achieving an increase in the distance between the two shock absorbers arranged relatively to each other. In the width direction of the vehicle body, more rear space is released for the occupants, thereby improving the occupants' comfort experience in the width direction. More space can also increase the degree of freedom in development of different models, and the vehicle has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A front view of a rear steering knuckle assembly provided in an embodiment of the present application;

[0023] Figure 2 A side view of a rear steering knuckle assembly provided in an embodiment of the present application;

[0024] Figure 3 A rear view of a rear steering knuckle assembly provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the first direction relationship between the rear steering knuckle assembly and the wheel provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the relationship between the rear steering knuckle assembly and the wheel in a second direction provided in an embodiment of the present application;

[0027] Figure 6 A schematic diagram of the structure of the rear steering knuckle assembly after installation provided by an embodiment of the present application;

[0028] In the figure: 100, rear steering knuckle body; 101, first mounting surface; 102, connection position; 200, first connecting arm; 201, first connecting end; 202, arc section; 203, bending section; 204, first avoidance space; 205, second avoidance space; 301, shock absorber; 302, wheel; 303, connecting rod; 304, rear frame. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0030] like Figure 1 , Figure 2 As shown, Figure 1 This is a front view of the rear steering knuckle assembly provided in an embodiment of the present application. Figure 2 A side view of a rear steering knuckle assembly provided in an embodiment of the present application.

[0031] On the one hand, the present application provides a rear knuckle assembly, the rear knuckle assembly comprising a rear knuckle body 100 and a first connecting arm 200, wherein:

[0032] like Figure 1 , Figure 2 As shown, the rear knuckle body 100 is used to be arranged corresponding to the wheel 302. At the rear wheel 302 of the vehicle, there is a corresponding rear knuckle body 100, and corresponding operation control is performed on the wheel 302 at that location. Each rear knuckle body 100 provides a stable connection arrangement basis for the corresponding first connecting arm 200, so as to keep the first connecting arm 200 performing corresponding functional operations in complex working conditions.

[0033] like Figure 1 , Figure 2 As shown, the first connecting arm 200 is fixed on the rear knuckle body 100, and the first connecting arm 200 has a first connecting end 201 extending on the upper part of the rear knuckle body 100, the first connecting end 201 is used to support and connect the shock absorber 301, and in the two rear knuckle assemblies arranged opposite to each other along the width direction of the vehicle body, the distance between the two oppositely arranged first connecting ends 201 is not less than the distance between the two oppositely arranged rear knuckle bodies 100.

[0034] like Figure 1 , Figure 2 As shown, the first connecting arm 200 is fixedly connected to the rear knuckle body 100, and the first connecting end 201 extends to the upper area of ​​the rear knuckle body 100 and serves as the installation base of the shock absorber 301. After the rear knuckle assembly and the shock absorber 301 are installed and arranged respectively, the corresponding shock absorber 301 is also installed on the upper part of the first connecting arm 200. Since the two shock absorbers 301 arranged between the two wheels 302 are respectively located in the upper area of ​​the rear knuckle body 100, the shock absorber 301, the rear knuckle body 100 and the first connecting arm 200 are arranged in the space of the vehicle body height, which greatly reduces the space occupied in the width direction of the vehicle body. On the one hand, the utilization rate of the width space in the vehicle is greatly improved. On the other hand, the connection distance between the rear knuckle body 100 and the rear frame 304 is shortened, and the connection distance between the rear wheel 302 and the rear frame 304 is shortened, thereby improving the reliability and stability of the frame.

[0035] It should also be noted that a plurality of shock absorbers 301 can be arranged on the first connecting arm 200 on each rear steering knuckle body 100, and the plurality of shock absorbers 301 can be arranged in parallel along the length direction or the width direction of the vehicle body to thereby improve the shock absorbing effect. In addition, the plurality of shock absorbers 301 are simultaneously configured on the first connecting end 201 of the first connecting arm 200, which shortens the space occupied by the shock absorber 301 in the height direction of the vehicle body while maintaining the shock absorbing performance, thereby reducing the encroachment on the space above the wheel and further improving space utilization and reliability.

[0036] In an optional embodiment, the working principle of the rear steering knuckle assembly in the present application is: the rear steering knuckle assembly includes a rear steering knuckle body 100 and a first connecting arm 200, the rear steering knuckle body 100 is used to be arranged corresponding to the wheel 302, the first connecting arm 200 is fixedly arranged on the rear steering knuckle body 100, and the first connecting arm 200 has a first connecting end 201 extending on the upper part of the rear steering knuckle body 100, the first connecting end 201 is used to support and connect the shock absorber 301, and in the two rear steering knuckle assemblies arranged relatively to each other along the width direction of the vehicle body, the distance between the two relatively arranged first connecting ends 201 is not less than the distance between the two relatively arranged rear steering knuckle bodies 100, after the arrangement of the rear steering knuckle assembly is completed, the position of the original shock absorber 301 in the rear suspension, The two shock absorbers 301 correspondingly located above and arranged oppositely are arranged respectively using the space above the tires. Under the premise that the distance between the two rear wheels does not change, the relative distance between the two rear steering knuckle bodies 100 also remains relatively stable. The first connecting arm 200 provides a connection position 102 for the shock absorber 301 above the tire. In the width direction of the vehicle body, the overlapping of the space required for the shock absorber 301 and the rear steering knuckle body 100 is effectively avoided, and the distance between the two first connecting ends 201 arranged oppositely is effectively increased, thereby achieving an increase in the distance between the two shock absorbers 301 arranged oppositely. In the width direction of the vehicle body, more rear space is released for the occupants, improving the occupants' comfort experience in the width direction. More space can also increase the degree of freedom in development for different vehicle models, and the vehicle has strong applicability.

[0037] like Figure 2 , Figure 5 As shown, Figure 5 A schematic diagram of the second direction relationship between the rear steering knuckle assembly and the wheel 302 provided in an embodiment of the present application, in an optional embodiment, an arc segment 202 is provided in the middle portion of the first connecting arm 200, and in a reference plane formed by the width direction and the height direction of the vehicle body, the first connecting arm 200 has a first avoidance space 204 facing the wheel 302.

[0038] like Figure 5 , Figure 6 As shown, Figure 6The schematic diagram of the structure of the rear knuckle assembly after installation provided in the embodiment of the present application shows that an arc segment 202 is provided in the middle of the first connecting arm 200, one end of the first connecting arm 200 is fixedly connected to the rear knuckle body 100, and the first connecting end 201 is correspondingly arranged at a preset shock absorber 301 installation position, with a reference plane formed in the width direction and the height direction of the vehicle body, through the connection and extension of the arc segment 202, so that a concave first avoidance space 204 is formed in the middle of the first connecting arm 200, when a wheel 302 is installed on one side of the rear knuckle body 100, the thickness of the tire is greater than the thickness of the wheel hub installation part, and the thickness direction of the wheel 302 also reserves installation space for the brake system, That is to say, after the installation of the wheel 302 is completed, one end of the first connecting arm 200 close to the rear steering knuckle body 100 follows the rear steering knuckle body 100 to extend to the wheel hub, and the first connecting end 201 is reliably extended to the upper position of the wheel 302 through the arc segment 202 set toward the wheel 302. Correspondingly, the side of the wheel 302 extends into the first avoidance space 204 and maintains a stable and reliable relative position relationship between the wheel 302 and the first connecting arm 200, and the specific parameters of the arc segment 202 can be arranged according to the relative position of the wheel 302 after installation, so as to keep the wheel 302 at a preset range of spacing from the first connecting arm 200 under complex working conditions.

[0039] like Figure 1 , Figure 2 and Figure 4 As shown, Figure 4 A schematic diagram of the first direction relationship between the rear steering knuckle assembly and the wheel 302 provided in an embodiment of the present application. In an optional embodiment, a first mounting surface 101 is provided on the rear steering knuckle body 100, and the first mounting surface 101 is used to fix the wheel 302, and the center point of the first mounting surface 101 is located on the rotation axis of the wheel 302.

[0040] The first mounting surface 101 on the rear steering knuckle body 100 is used to fix the hub of the wheel 302, keep the center point of the first mounting surface 101 on the rotation center axis of the wheel 302, maintain the accuracy of the relative position of the rear steering knuckle body 100 and the wheel 302, and use the center of the first mounting surface 101 as a reference basis to facilitate the reference of the first connecting arm 200 and related connecting positions 102, thereby improving accuracy.

[0041] like Figure 1 , Figure 5 and Figure 6 As shown, in an optional embodiment, the distance between the first connecting end 201 and the center point of the first mounting surface 101 is greater than the distance between the outer peripheral surface of the wheel 302 and the center point of the first mounting surface 101 .

[0042] Compared with the center position of the first mounting surface 101, the relative position of the first connecting end 201 is set higher than the outer surface of the wheel 302, so that the first connecting arm 200 can maintain a certain reserved gap between the top position of the outer peripheral surface of the wheel 302 and the first connecting end 201 without interfering with the operation of the wheel 302 while maintaining the reliable installation of the shock absorber 301, thereby maintaining the reliable operation of the shock absorber 301.

[0043] like Figure 1 , Figure 2 and Figure 4 As shown, in an optional embodiment, the center points of the first connecting end 201 and the first mounting surface 101 are respectively on the extension lines of the center line of the shock absorber 301 .

[0044] The first connecting end 201, the center line of the shock absorber 301 and the center point of the first mounting surface 101 are constrained to be arranged in a colinear manner, that is, the first connecting arm 200 and the shock absorber 301 act on the rear steering knuckle body 100 in the same direction, and maintain a more stable dynamic load-bearing effect during the dynamic operation of the wheel 302, thereby improving stability.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, Figure 3 The rear view of the rear steering knuckle assembly provided in an embodiment of the present application, in an optional implementation, a bending section 203 is further provided in the middle portion of the first connecting arm 200, and in the reference plane formed by the length direction and the height direction of the vehicle body, the first connecting arm 200 has a second avoidance space 205.

[0046] The bending section 203 provided on the first connecting arm 200 is bent and extended in a reference plane formed by the length direction and the height direction of the vehicle body, and the bending section 203 provides a second avoidance space 205 for installing related components such as sensors, and the travel space required for dynamic adjustment of related components on the basis of maintaining the colinear arrangement of the first connecting end 201, the center line of the shock absorber 301 and the center point of the first mounting surface 101.

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, a plurality of connection positions 102 are provided on the rear knuckle body 100, and the connection positions 102 are used to set control arms and connecting rods 303 that are movably connected between the rear knuckle body 100 and the rear sub-frame assembly.

[0048] The connection position 102 is used to respectively set the control arm and the connecting rod 303 so that the vehicle can maintain a stable and controllable dynamic state in complex dynamic conditions, and the control connection is stable and reliable.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the first connecting arm 200 is integrally provided with the rear steering knuckle body 100, so as to further increase the overall reliability and improve the load-bearing support capacity.

[0050] On the other hand, the present application also provides a suspension system, which includes the rear steering knuckle assembly as described above. Specifically, in the suspension system, except that the rear steering knuckle assembly and related components adopt the technical solution in the above-mentioned embodiment, the structure, connection relationship, installation position, etc. of other devices can refer to the relevant disclosure of the prior art and will not be elaborated here.

[0051] Based on the same inventive concept, the present application also provides a vehicle, which includes a suspension system as described above. Specifically, in the vehicle, except that the suspension system and related components adopt the technical solutions in the above embodiments, the structures, connection relationships, installation positions, etc. of other devices can refer to the relevant disclosures of the prior art and will not be elaborated here.

[0052] It should be understood that the terms first, second, etc. are only used to distinguish descriptions and should not be understood as indicating or suggesting relative importance. Although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit without departing from the scope of the exemplary embodiments of the present invention.

[0053] It should be understood that the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another relationship between associated objects, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0054] It should be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside" and the like indicate orientations or positional relationships that are customarily placed when the disclosed product is used, or are orientations or positional relationships that are customarily understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The terms used herein are only used to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates the opposite meaning. It should also be understood that the terms "include", "comprising", "including", and / or "comprising" when used herein specify the existence of the claimed features, integers, steps, operations, units, and / or components, and do not exclude the existence or increase of one or more other features, quantities, steps, operations, units, components, and / or their combinations.

[0057] Specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, it should be understood by those of ordinary skill in the art that the exemplary embodiments may be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail to avoid making the exemplary embodiments unclear.

[0058] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0059] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field.

Claims

1. A rear steering knuckle assembly, characterized in that: The rear steering knuckle assembly comprises: A rear knuckle body, the rear knuckle body being arranged corresponding to the wheel; A first connecting arm, the first connecting arm is fixedly arranged on the rear steering knuckle body, and the first connecting arm has a first connecting end extending on the upper part of the rear steering knuckle body, the first connecting end is used to support and connect the shock absorber, and in the two rear steering knuckle assemblies arranged opposite to each other along the width direction of the vehicle body, the distance between the two first connecting ends arranged opposite to each other is not less than the distance between the two rear steering knuckle bodies arranged opposite to each other.

2. The rear steering knuckle assembly according to claim 1, characterized in that: An arc section is provided in the middle of the first connecting arm. In a reference plane formed by the width direction and the height direction of the vehicle body, the first connecting arm has a first avoidance space toward the wheel.

3. The rear steering knuckle assembly according to claim 1, characterized in that: The rear steering knuckle body is provided with a first mounting surface, the first mounting surface is used for fixedly connecting the wheel, and the center point of the first mounting surface is located on the rotation axis of the wheel.

4. The rear steering knuckle assembly according to claim 3, characterized in that: The distance between the first connecting end and the center point of the first mounting surface is greater than the distance between the outer peripheral surface of the wheel and the center point of the first mounting surface.

5. The rear steering knuckle assembly according to claim 3, characterized in that: The center points of the first connecting end and the first mounting surface are respectively on the extension lines of the center line of the shock absorber.

6. The rear steering knuckle assembly according to claim 5, characterized in that: A bending section is also provided in the middle of the first connecting arm, and the first connecting arm has a second avoidance space in a reference plane formed by the length direction and the height direction of the vehicle body.

7. The rear steering knuckle assembly according to claim 1, characterized in that: The rear steering knuckle body is provided with a plurality of connection positions, and the connection positions are used to set a control arm and a connecting rod movably connected between the rear steering knuckle body and the rear sub-frame assembly.

8. The rear steering knuckle assembly according to claim 1, characterized in that: The first connecting arm is integrally arranged with the rear steering knuckle body.

9. A suspension system, characterized in that: The suspension system comprises the rear knuckle assembly according to any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle includes the suspension system of claim 9.

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