Steering system for vehicle, and vehicle

Abstract

A steering system (100) for a vehicle (1000), and a vehicle. The steering system for a vehicle comprises a steering knuckle (110) and a steering tie rod (120), wherein an upper end of the steering knuckle is connected to a vehicle body; the steering tie rod comprises a rod body (121), a rotating connecting member (122) and a collision boss (123); the rod body is rotatably connected to a lower end of the steering knuckle by means of the rotating connecting member; the cross-sectional area of a portion of the rotating connecting member is smaller than that of the remaining portion; and the collision boss is arranged on the rod body, protrudes in a direction away from the steering knuckle and protrudes from the steering knuckle.

Description

Steering system for vehicle and vehicle

[0001] Cross-reference to related applications

[0002] The present application is based on the Chinese patent application No. 202410866255.X, filed on June 28, 2024, and claims priority to the above-mentioned Chinese patent application, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application belongs to the technical field of vehicles, and particularly relates to a steering system for vehicle and vehicle. BACKGROUND

[0004] The steering system of a vehicle is an important component of the vehicle, which not only ensures that the vehicle can turn according to the driver's intention, but also improves the safety and comfort of the vehicle driving, and provides a safer and more comfortable driving experience for the driver.

[0005] However, the design of the steering pull rod in the existing steering system is only used for pull rod connection and failure chain design, and does not contain the design of the disconnection of the steering pull rod and the steering knuckle in the collision condition, which may cause the wheels to be squeezed into the cabin due to high-speed impact when the vehicle is involved in a collision, threatening the safety of the passengers and reducing the safety of the vehicle. SUMMARY

[0006] Therefore, the present application provides a steering system for vehicle, which can ensure that the steering knuckle and the steering pull rod can be disconnected to some extent when the vehicle is involved in a collision, so as to facilitate the wheels to fly out and reduce the squeezing of the wheels to the cabin, thereby reducing the risk of injury to the passengers in the collision and solving the technical problem of poor safety of the vehicle in the prior art when the vehicle is involved in a collision.

[0007] The steering system for vehicle according to the embodiments of the present application comprises a steering knuckle, the upper end of which is adapted to be connected to the vehicle body; a steering pull rod, which comprises a rod body, a rotating connecting piece and a collision boss, the rod body is rotatably connected to the lower end of the steering knuckle through the rotating connecting piece, a part of the rotating connecting piece has a smaller cross-sectional area than the rest, and the collision boss is arranged on the rod body, the collision boss protrudes away from the steering knuckle and protrudes out of the steering knuckle.

[0008] According to the steering system for the vehicle, the rotating joint connecting the steering pull rod and the steering knuckle is arranged to have a part with a smaller cross-sectional area than the rest, and the collision boss is arranged on the rod body of the steering pull rod and protrudes from the steering knuckle in a direction away from the steering knuckle. When the vehicle encounters a collision, the impact force can first act on the steering pull rod through the collision boss and drive the steering pull rod to move relative to the steering knuckle. During the movement of the steering pull rod, the rotating joint connecting the steering pull rod and the steering knuckle can be cut off due to the part with a smaller cross-sectional area than the rest, so as to realize the disengagement of the steering knuckle and the steering pull rod, facilitate the rapid cutting of the connecting part between the wheel and the vehicle body, make the wheel fly out, reduce the extrusion of the wheel on the vehicle cabin and the upper vehicle body, and thus reduce the risk of injury of the driver and passenger in the collision, and reduce the design requirement and weight of the upper vehicle body, while improving the use safety of the vehicle, and also reducing the manufacturing difficulty of the upper vehicle body and facilitating the lightweight design of the upper vehicle body.

[0009] Optionally, the collision boss protrudes forward from the steering knuckle. When the vehicle encounters a 25% offset collision, the steering knuckle and the steering pull rod can be disengaged to some extent, the wheel can fly out, the extrusion of the wheel on the vehicle cabin is reduced, the risk of injury of the driver and passenger in the collision is reduced, the casualty rate of the vehicle in an accident is significantly reduced, and the use safety of the vehicle is improved.

[0010] Optionally, the collision boss and the rod body are an integral piece. In this way, the connection between the collision boss and the rod body can be omitted, the assembly difficulty of the collision boss and the rod body is reduced, the connection strength of the collision boss and the rod body can be improved, and the connection between the collision boss and the rod body can be prevented from being broken when the collision boss encounters a collision, so that the impact force acting on the collision boss can drive the steering pull rod to move relative to the steering knuckle through the collision boss, and the disengagement of the steering knuckle and the steering pull rod can be facilitated, the wheel can fly out, and the extrusion of the wheel on the vehicle cabin and the upper vehicle body is reduced.

[0011] Optionally, the protruding length of the collision boss from the steering knuckle is not less than 22 mm. In this way, the collision boss can effectively protrude from the steering knuckle, so that when the vehicle encounters a collision, the impact force can first act on the steering pull rod through the collision boss, so as to facilitate the disengagement of the steering knuckle and the steering pull rod, reduce the extrusion of the wheel on the vehicle cabin and the upper vehicle body, and also facilitate the improvement of the structural strength of the collision boss and the guarantee of the working performance of the collision boss.

[0012] Optionally, the rod body comprises a connecting body and an outer pull rod connected with each other, the connecting body is provided with the rotating connecting piece; the front side of the connecting body and / or the outer pull rod is provided with the collision boss which protrudes from the steering knuckle. Thus, the collision boss is arranged on the front side of the rod body, so that when the vehicle encounters a 25% offset collision, the steering knuckle and the steering pull rod can be separated to a certain extent, the risk of injury to the driver and passengers in the collision is reduced, and the use safety of the vehicle is improved.

[0013] Optionally, the collision boss is integrally formed with the connecting body and / or the outer pull rod. That is, the collision boss and the connecting body and / or the outer pull rod are formed as an integral piece, which can reduce the fixing difficulty of the collision boss, improve the position stability of the collision boss, and ensure the working performance of the collision boss to a certain extent, so as to separate the steering knuckle and the steering pull rod by using the collision boss when the vehicle is subjected to a collision, thereby improving the use safety of the vehicle.

[0014] Optionally, the collision boss is arranged on the connecting body. In this way, the collision boss is arranged on the rod body, and the forming difficulty of the collision boss is reduced, so as to ensure the working performance of the collision boss to a certain extent.

[0015] Optionally, in the height direction of the vehicle, the minimum thickness of the collision boss is greater than 8mm. The structural strength of the collision boss is improved, and the collision boss is prevented from being directly broken when subjected to an impact to a certain extent, so as to separate the steering knuckle and the steering pull rod by using the collision boss, and reduce the extrusion of the wheels on the vehicle cabin and the upper body.

[0016] Optionally, the collision boss extends along the circumference of the connecting body, and the included angle between the opposite two side walls of the collision boss in the circumferential direction of the connecting body is not less than 40°. In this way, the extension area of the collision boss is ensured to a certain extent, so as to improve the structural strength of the collision boss and ensure the working performance of the collision boss to a certain extent.

[0017] Optionally, the collision boss and the connecting body are connected through an arc segment. The problem of stress concentration at the connection between the collision boss and the connecting body is avoided to a certain extent, so that when the steering pull rod is subjected to a collision, the connection between the collision boss and the rod body is directly broken, the impact force acting on the collision boss can drive the steering pull rod to move relative to the steering knuckle, so as to separate the steering knuckle and the steering pull rod.

[0018] Optionally, a guide boss is further arranged on the rod body, the knuckle has an outer wall surface facing the steering rod, and the guide boss is arranged between the rod body and the outer wall surface, and is used to drive the steering rod to move along the extending direction of the outer wall surface when the guide boss contacts the knuckle. Thus, the steering rod is driven to move relative to the knuckle by the guide boss, so as to further realize the disengagement of the knuckle and the steering rod, facilitate the wheel to fly out, and reduce the extrusion of the wheel on the cabin and the upper vehicle body.

[0019] Optionally, at least a part of the outer wall surface extends downward in a direction away from the rod body. Here, at least a part of the outer wall surface extends in both the direction away from the rod body and the downward direction, so that the steering rod can effectively move and simultaneously move downward when the guide boss drives the steering rod to move along the extending direction of the outer wall surface, thereby facilitating the disengagement of the knuckle and the steering rod.

[0020] Optionally, the guide boss is arranged opposite to the collision boss in the advancing direction of the vehicle. That is, the guide boss is arranged opposite to the collision boss in the advancing direction of the vehicle, so as to reasonably utilize the space on the rod body, thereby ensuring that the guide boss and the collision boss can be arranged on the rod body at the same time, and to a certain extent, guaranteeing the working performance of the guide boss and the collision boss, thereby facilitating the improvement of the use safety of the vehicle.

[0021] Optionally, the guide boss and the collision boss are connected and formed as an integral piece. Thus, the forming difficulty of the guide boss and the collision boss can be reduced, the guide boss and the collision boss can be supported by each other, the position stability of the guide boss and the collision boss is improved, the structural strength of the guide boss and the collision boss is improved, and the working performance of the guide boss and the collision boss is improved.

[0022] The vehicle according to the embodiments of the present application comprises the aforementioned steering system.

[0023] The vehicle according to the embodiments of the present application, by adopting the steering system described in the above embodiments, when the vehicle encounters a collision, the extrusion of the wheel on the cabin and the upper vehicle body can be reduced, thereby reducing the risk of injury of the driver and the passenger in the collision, reducing the design requirement of the upper vehicle body and reducing the weight of the upper vehicle body, realizing the improvement of the use safety of the vehicle, reducing the manufacturing difficulty of the upper vehicle body, and facilitating the lightweight design of the upper vehicle body.

[0024] Additional aspects and advantages of the present application will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings of exemplary embodiments of the present application, and where:

[0026] Fig. 1 is a schematic view of a steering system according to some embodiments of the first aspect of the present application.

[0027] Fig. 2 is a schematic view of a steering tie rod from a first perspective according to some embodiments of the first aspect of the present application.

[0028] Fig. 3 is a schematic view of a steering tie rod from a second perspective according to some embodiments of the first aspect of the present application.

[0029] Fig. 4 is a schematic view of a steering tie rod from a third perspective according to some embodiments of the first aspect of the present application.

[0030] Fig. 5 is a schematic view of a rotational connection according to some embodiments of the present application.

[0031] Fig. 6 is a schematic view of a rotational connection from another angle according to some embodiments of the present application.

[0032] Fig. 7 is a schematic view of a steering tie rod according to some embodiments of the second aspect of the present application.

[0033] Fig. 8 is a schematic view of a steering tie rod with some structure omitted according to some embodiments of the second aspect of the present application.

[0034] Fig. 9 is a schematic view of a vehicle in contact with an impactor according to some embodiments of the present application.

[0035] Fig. 10 is a schematic view of a vehicle being impacted by an impactor according to some embodiments of the present application.

[0036] Reference signs: 1000, vehicle; 100, steering system; 110, steering knuckle; 111, outer wall surface; 120, steering tie rod; 121, rod body; 1211, connection body; 1212, outer tie rod; 122, rotational connection; 1221, ball head; 1222, ball rod; 1223, weak portion; 123, impact boss; 124, circular arc segment; 125, guide boss; 200, wheel. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions, and superiorities of the embodiments of the present application clearer, the following will be a clear description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The articles "a", "an", and "the" as used in this application and the appended claims should not be construed as meaning "one and only one unless specified otherwise by the context. As used in this application and the appended claims, the article "a" is intended to include "at least one" of a listed item, which can also be expressed in the alternative as "one or more". Unless otherwise noted, the use of the singular includes the plural and vice-versa, and the use of "or" means "and / or", unless stated otherwise. Unless otherwise indicated, the use of relational terms, such as "first", "second", "third", and the like, are used solely to distinguish one subject from another, without necessarily implying a particular order or sequence.

[0039] Reference throughout this application to "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. It is expressly understood that the embodiments described herein are merely examples from a multitude of possible structural combinations that can be claimed under the present application.

[0040] In the description of the application, it is necessary to note that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0041] In the present application, the term "and / or", is only a description of the relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0042] In the embodiments of the present application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length and width of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0043] "Multiple" appearing in the present application means two or more (including two).

[0044] The steering system of a vehicle is generally composed of a plurality of components, such as a steering handle, a steering gear, a steering transmission mechanism and other auxiliary components, which work together to ensure that the driver can easily and accurately control the driving direction of the vehicle 1000, thereby ensuring driving safety.

[0045] The steering transmission mechanism is an important component of the steering system of a vehicle, and mainly includes a steering rocker, a steering tie rod and a steering knuckle. The main function of the steering transmission mechanism is to transmit the force and movement output by the steering gear to the steering knuckles on both sides of the steering axle, so that the steering wheels on both sides are deflected, and the deflection angles of the steering wheels change according to a certain relationship, so as to ensure that the relative sliding between the wheels and the ground is as small as possible when the vehicle is turning, thereby improving the use performance of the vehicle.

[0046] However, the applicant has noticed that in the existing steering system, especially in the steering system with a front-mounted steering tie rod, the design of the steering tie rod is only used for tie rod connection and failure chain design, and does not include the design of the disconnection of the steering tie rod and the steering knuckle in the 25% offset collision condition (SOB). This results in the possibility that when the vehicle encounters a 25% offset collision, the wheels may be squeezed backward due to high-speed impact, thereby invading the cabin and threatening the passengers, affecting the safety of the vehicle.

[0047] In order to solve the above problems, in combination with FIGS. 1-8, the present application provides a steering system 100 which can quickly cut off the connecting components between the wheels 200 and the vehicle body, so that the wheels 200 fly out from the side, thereby avoiding the wheels 200 from invading the cabin to a certain extent. The specific scheme is to set the rotary connecting piece 122 connecting the steering tie rod 120 and the steering knuckle 110 to have a cross-sectional area smaller than that of the rest, and to set a collision boss 123 on the rod body 121 of the steering tie rod 120, which protrudes away from the steering knuckle 110. In this way, when the vehicle 1000 encounters a collision, the impact force can first act on the steering tie rod 120 through the collision boss 123 and drive the steering tie rod 120 to move relative to the steering knuckle 110. During the movement of the steering tie rod 120, because the cross-sectional area of the rotary connecting piece 122 connecting the steering tie rod 120 and the steering knuckle 110 is smaller than that of the rest, the rotary connecting piece 122 can be cut off, thereby realizing the disconnection of the steering knuckle 110 and the steering tie rod 120. This facilitates the quick cutting off of the connecting components between the wheels 200 and the vehicle body, so that the wheels 200 fly out, thereby reducing the squeezing of the wheels 200 on the cabin and the upper body, reducing the risk of injury to the passengers in the collision, and reducing the design requirements of the upper body and the weight of the upper body. The technical problem that in the prior art, when the vehicle 1000 encounters a collision, the wheels 200 may be squeezed backward due to high-speed impact and invade the cabin is solved.

[0048] In addition, as shown in FIG. 9 and FIG. 10, the application provides a vehicle 1000 using the above-mentioned steering system 100, the vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile or a range extended automobile, etc.

[0049] The steering system 100 for the vehicle 1000 according to the embodiments of the application is described below with reference to the accompanying drawings.

[0050] As shown in FIG. 1, the steering system 100 for the vehicle 1000 according to the embodiments of the application comprises a steering knuckle 110 and a steering tie rod 120.

[0051] The upper end of the steering knuckle 110 is adapted to be connected with the vehicle body of the vehicle 1000. Thus, the steering system 100 and the vehicle body are connected, so as to control the driving direction of the vehicle 1000 by the steering system 100, and ensure the driving safety.

[0052] It should be noted that the up-down and front-rear directions in FIG. 1 can be understood as the up-down direction and the front-rear direction of the vehicle 1000, wherein the up-down direction of the vehicle 1000 refers to the direction from the roof to the bottom of the vehicle 1000, and the front-rear direction of the vehicle 1000 refers to the direction from the head to the tail of the vehicle 1000.

[0053] In some embodiments, the upper end of the steering knuckle 110 is connected with the vehicle body of the vehicle 1000 through a swing arm, and the steering knuckle 110 is also connected with the wheel 200, so as to connect the steering system 100 between the vehicle body and the wheel 200, and drive the wheel 200 to rotate around the vehicle body by the steering system 100, so as to control the driving direction of the vehicle 1000 by the steering system 100.

[0054] As shown in FIG. 1-FIG. 4, the steering tie rod 120 comprises a rod body 121, a rotating connecting piece 122 and a collision boss 123, the rod body 121 is rotatably connected with the lower end of the steering knuckle 110 through the rotating connecting piece 122, a part of the rotating connecting piece 122 has a smaller cross-sectional area than the rest, and the collision boss 123 is arranged on the rod body 121, and the collision boss 123 protrudes away from the steering knuckle 110.

[0055] Through the above arrangement, when the vehicle 1000 is impacted and the impact force moves towards the steering drag link 120, the impact force can be allowed to first act on the steering drag link 120 through the collision boss 123 and drive the steering drag link 120 to move relative to the steering knuckle 110, and in the process of movement of the steering drag link 120, because the cross-sectional area of a part of the rotary connecting piece 122 connecting the steering drag link 120 and the steering knuckle 110 is smaller than the cross-sectional area of the rest, the rotary connecting piece 122 can be cut off, so as to realize the disengagement of the steering knuckle 110 and the steering drag link 120, facilitate the rapid cutting off of the connecting components between the vehicle wheel 200 and the vehicle body, make the vehicle wheel 200 fly out, reduce the extrusion of the vehicle wheel 200 on the vehicle cabin and the upper vehicle body, thereby reducing the risk of injury of the driver and passenger in the collision, and improving the use safety of the vehicle 1000.

[0056] At the same time, because the extrusion of the impact force on the upper vehicle body is reduced, when manufacturing the upper vehicle body, the design requirements of the upper vehicle body can be adaptively reduced and the weight of the upper vehicle body can be reduced, thereby to a certain extent, the manufacturing difficulty of the upper vehicle body is reduced, and the lightweight design of the upper vehicle body is facilitated.

[0057] In a specific example, when the vehicle 1000 is impacted and the impact force moves towards the steering drag link 120, the barrier extrusion collision boss 123 first realizes the disengagement of the steering drag link 120 and the steering knuckle 110, and then the connection between the swing arm and the upper vehicle body is disconnected, and the vehicle wheel 200 flies out.

[0058] As can be seen from the above structure, the steering system 100 for the vehicle 1000 of the embodiment of the application sets the rotary connecting piece 122 connecting the steering drag link 120 and the steering knuckle 110 to have a part with a cross-sectional area smaller than the cross-sectional area of the rest, and sets the collision boss 123 on the rod body 121 of the steering drag link 120 to protrude away from the steering knuckle 110 and protrude from the steering knuckle 110, so that when the vehicle 1000 encounters a collision, the impact force can be allowed to first act on the steering drag link 120 through the collision boss 123 and drive the steering drag link 120 to move relative to the steering knuckle 110, and in the process of movement of the steering drag link 120, because the cross-sectional area of a part of the rotary connecting piece 122 connecting the steering drag link 120 and the steering knuckle 110 is smaller than the cross-sectional area of the rest, the rotary connecting piece 122 can be cut off, so as to realize the disengagement of the steering knuckle 110 and the steering drag link 120, facilitate the rapid cutting off of the connecting components between the vehicle wheel 200 and the vehicle body, make the vehicle wheel 200 fly out, reduce the extrusion of the vehicle wheel 200 on the vehicle cabin and the upper vehicle body, thereby reducing the risk of injury of the driver and passenger in the collision, and improving the use safety of the vehicle 1000.

[0059] Compared with the prior art, the steering system 100 for the vehicle 1000 according to the embodiments of the present application can effectively separate the steering knuckle 110 from the steering tie rod 120 when the vehicle 1000 encounters a collision, so that the wheel 200 flies out, reduces the extrusion of the wheel 200 on the vehicle cabin and the upper body, improves the use safety of the vehicle 1000, and reduces the manufacturing difficulty of the upper body and facilitates the lightweight design of the upper body.

[0060] In some embodiments, as shown in FIGS. 1, 2 and 5, the rotating connecting piece 122 is a connecting ball pin, which includes a ball head 1221 and a ball rod 1222. The ball head 1221 is used to be connected with the rod body 121 of the steering tie rod 120, and the ball rod 1222 is connected with the steering knuckle 110, so as to realize the rotation connection between the rod body 121 and the lower end of the steering knuckle 110.

[0061] Optionally, as shown in FIGS. 5 and 6, a weak part 1223 is arranged at the connection between the ball head 1221 and the ball rod 1222. The cross-sectional area of the weak part 1223 is smaller than that of the ball rod 1222 connected therewith, so as to weaken the connection strength at the connection between the ball head 1221 and the ball rod 1222. Thus, the rotating connecting piece 122 can be broken under the radial impact force, so as to facilitate the separation of the steering knuckle 110 from the steering tie rod 120 and reduce the difficulty of the separation of the steering knuckle 110 from the steering tie rod 120.

[0062] In some embodiments, the diameter of the weak part 1223 ranges from 13 mm to 15 mm. The weak part 1223 can be broken under the radial impact force while ensuring the structural strength of the rotating connecting piece 122 to some extent, so as to facilitate the rotation connection between the rod body 121 and the lower end of the steering knuckle 110 by the rotating connecting piece 122.

[0063] In some embodiments, as shown in FIGS. 1-4, the collision boss 123 protrudes forward from the steering knuckle 110. It should be noted that the forward direction herein refers to the direction toward the front of the vehicle 1000, that is, the direction toward the front of the vehicle 1000. When the vehicle 1000 encounters a near 25% offset collision, the impact force can first act on the collision boss 123 and drive the steering tie rod 120 to move relative to the steering knuckle 110 through the collision boss 123, so as to control the separation of the steering knuckle 110 from the steering tie rod 120 to some extent, facilitate the wheel 200 to fly out, reduce the extrusion of the wheel 200 on the vehicle cabin, reduce the risk of injury of the driver and passenger in the collision, significantly reduce the casualty rate of the vehicle 1000 in an accident, and improve the use safety of the vehicle 1000.

[0064] In some embodiments, as shown in FIG. 1, the steering pull rod 120 is arranged close to the front side of the steering knuckle 110, and the collision boss 123 is arranged on the front side of the rod body 121 and protrudes forward from the steering knuckle 110, so as to ensure that the steering knuckle 110 and the steering pull rod 120 can effectively separate when the vehicle 1000 encounters a 25% offset collision, thereby improving the safety of the vehicle 1000.

[0065] In some embodiments, the collision boss 123 and the rod body 121 are formed as an integral piece. Here, when the collision boss 123 is arranged on the rod body 121, the collision boss 123 and the rod body 121 are formed as an integral piece, so that the connection between the collision boss 123 and the rod body 121 can be omitted, the assembly difficulty of the collision boss 123 and the rod body 121 is reduced, the connection strength of the collision boss 123 and the rod body 121 is improved, and the connection between the collision boss 123 and the rod body 121 is prevented from being broken when the collision boss 123 is subjected to a collision, so that the impact force acting on the collision boss 123 can drive the steering pull rod 120 to move relative to the steering knuckle 110, thereby facilitating the separation of the steering knuckle 110 and the steering pull rod 120, facilitating the wheel 200 to fly out, and reducing the extrusion of the wheel 200 on the vehicle cabin and the upper body.

[0066] In some embodiments, the collision boss 123 and the rod body 121 are made by an integral molding process, so that the collision boss 123 and the rod body 121 are formed as an integral piece, thereby reducing the molding difficulty of the collision boss 123 and the rod body 121, and improving the position stability of the collision boss 123, so as to ensure the working performance of the collision boss 123 to some extent.

[0067] In some embodiments, the protruding length of the collision boss 123 protruding from the steering knuckle 110 is not less than 22 mm. Here, the collision boss 123 not only protrudes away from the steering knuckle 110, but also has a protruding length of not less than 22 mm, so as to ensure that the collision boss 123 has a certain protruding length relative to the steering knuckle 110, on the one hand, the collision boss 123 can effectively protrude from the steering knuckle 110, so as to ensure that when the vehicle 1000 is subjected to a collision, the impact force can first act on the steering pull rod 120 through the collision boss 123, so as to facilitate the separation of the steering knuckle 110 and the steering pull rod 120, thereby reducing the extrusion of the wheel 200 on the vehicle cabin and the upper body, and on the other hand, it is also beneficial to improve the structural strength of the collision boss 123 and ensure the working performance of the collision boss 123.

[0068] In some embodiments, the protruding length of the collision boss 123 from the knuckle 110 is 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm or 30mm, etc.

[0069] In some embodiments, as shown in FIG. 1, FIG. 2 and FIG. 3, the rod body 121 comprises a connecting body 1211 and an outer pull rod 1212, the connecting body 1211 and the outer pull rod 1212 are connected to each other, and the connecting body 1211 is provided with a rotating connecting piece 122. In this way, the connecting body 1211 can be connected to the lower end of the knuckle 110 through the rotating connecting piece 122, thereby realizing the rotating connection between the steering pull rod 120 and the knuckle 110, which not only reduces the connection difficulty, but also ensures the working performance of the steering system 100 to a certain extent.

[0070] In some embodiments, as shown in FIG. 2, FIG. 3 and FIG. 4, the connecting body 1211 is formed as a spherical shell body, so as to realize the rotating butt joint between the ball head 1221 and the rotating connecting piece 122, thereby facilitating the arrangement of the rotating connecting piece 122 on the connecting body 1211 and reducing the matching difficulty between the rotating connecting piece 122 and the connecting body 1211.

[0071] In some embodiments, as shown in FIG. 2, FIG. 3 and FIG. 4, the front side of the connecting body 1211 and / or the outer pull rod 1212 is provided with a collision boss 123, and the collision boss 123 protrudes from the knuckle 110. Here, the collision boss 123 is arranged on the front side of the connecting body 1211; or, the collision boss 123 is arranged on the front side of the outer pull rod 1212; or, the collision boss 123 is arranged on the front side of the connecting body 1211 and the outer pull rod 1212 at the same time, so as to arrange the collision boss 123 on the front side of the rod body 121 and make the collision boss 123 protrude from the knuckle 110. In this way, when the vehicle 1000 encounters a near 25% offset collision, the knuckle 110 and the steering pull rod 120 can be separated to a certain extent, which reduces the risk of injury to the driver and passenger in the collision and improves the use safety of the vehicle 1000.

[0072] It should be noted that when the collision boss 123 is arranged on the front side of the connecting body 1211 or the outer pull rod 1212, the collision boss 123 can be supported by the connecting body 1211 or the outer pull rod 1212, the position stability of the collision boss 123 is improved, and the fixing difficulty of the collision boss 123 is reduced due to the fact that the collision boss 123 is arranged on the front side of a separate structural member (the connecting body 1211 or the outer pull rod 1212); when the collision boss 123 is arranged on the front side of the connecting body 1211 and the outer pull rod 1212, the collision boss 123 can be supported by the connecting body 1211 and the outer pull rod 1212, the position stability of the collision boss 123 is maximized, and the extension length of the collision boss 123 is increased, so that the working performance of the collision boss 123 is ensured to a certain extent.

[0073] In some embodiments, the collision boss 123 is integrally formed with the connecting body 1211 and / or the outer pull rod 1212. Here, it is referred to that when the collision boss 123 is arranged on the front side of the connecting body 1211, the collision boss 123 and the connecting body 1211 are made by an integral forming process, when the collision boss 123 is arranged on the front side of the outer pull rod 1212, the collision boss 123 and the outer pull rod 1212 are made by an integral forming process, and when the collision boss 123 is arranged on the front side of the connecting body 1211 and the outer pull rod 1212, the collision boss 123 is integrally formed with the connecting body 1211 and the outer pull rod 1212 by an integral forming process. In this way, the fixing difficulty of the collision boss 123 is reduced, and the position stability of the collision boss 123 is improved, so that the working performance of the collision boss 123 is ensured to a certain extent, the steering knuckle 110 and the steering pull rod 120 are separated by the collision boss 123 when the steering knuckle 110 is subjected to a collision, and the use safety of the vehicle 1000 is improved.

[0074] In a specific example, the collision boss 123, the connecting body 1211 and the outer pull rod 1212 are formed as an integral piece, the forming difficulty of the steering pull rod 120 is reduced, and the structural stability of the steering pull rod 120 is improved, so that the working performance of the steering pull rod 120 is ensured to a certain extent.

[0075] In some embodiments, as shown in FIGS. 2, 3 and 4, the collision boss 123 is arranged on the connecting body 1211. That is, the collision boss 123 is arranged on a separate structural member, so that the collision boss 123 is arranged on the rod body 121, and the forming difficulty of the collision boss 123 is reduced, so that the working performance of the collision boss 123 is ensured to a certain extent.

[0076] In a specific example, the collision boss 123 is arranged on the front side of the connecting body 1211 and formed as an integral piece with the connecting body 1211, so that the collision boss 123 can fully play its role.

[0077] In some embodiments, the minimum thickness of the collision boss 123 in the height direction of the vehicle 1000 is greater than 8 mm. Wherein, the height direction of the vehicle 1000 here is also the up-down direction of the vehicle 1000, and the minimum thickness of the collision boss 123 can be understood as T shown in FIG. 4. By setting the minimum thickness of the collision boss 123 to be greater than 8 mm, the structural strength of the collision boss 123 can be improved, and to some extent, the direct fracture of the collision boss 123 when impacted can be avoided, thereby facilitating the disengagement of the steering knuckle 110 and the steering tie rod 120 by using the collision boss 123, reducing the extrusion of the wheel 200 to the vehicle cabin and the upper body, and improving the use safety of the vehicle 1000.

[0078] In some embodiments, the maximum thickness of the collision boss 123 is less than the axial length of the connecting body 1211, and the minimum thickness of the collision boss 123 is greater than 8 mm, which can not only improve the structural strength of the collision boss 123, but also enable the collision boss 123 to be effectively arranged on the connecting body 1211, so as to support the collision boss 123 by using the connecting body 1211, improve the positional stability of the collision boss 123, and further ensure the working performance of the collision boss 123 to some extent.

[0079] In some embodiments, as shown in FIGS. 2, 3 and 4, the collision boss 123 extends along the circumference of the connecting body 1211, and the included angle between the opposite two side walls of the collision boss 123 in the circumferential direction of the connecting body 1211 is not less than 40°. Wherein, the included angle between the opposite two side walls of the collision boss 123 can be understood as a shown in FIG. 3, which can ensure the extension area of the collision boss 123 in the circumferential direction of the connecting body 1211 to some extent, thereby improving the structural strength of the collision boss 123 and ensuring the working performance of the collision boss 123 to some extent.

[0080] In some embodiments, the included angle between the opposite two side walls of the collision boss 123 in the circumferential direction of the connecting body 1211 is 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, 190°, 200°, 210°, 220°, 230°, 240°, 250°, 260°, 270°, 280°, 290°, 300°, 310°, 320°, 330°, 340°, 350° or 360°, etc.

[0081] In some embodiments, as shown in FIG. 4, the collision boss 123 is connected with the connecting body 121 through a circular arc segment 124. The circular arc segment 124 avoids the problem of stress concentration at the connection between the collision boss 123 and the connecting body 121 to some extent, thereby avoiding the direct fracture of the connection between the collision boss 123 and the rod body 121 when the steering pull rod 120 encounters a collision, so that the impact force acting on the collision boss 123 can drive the steering pull rod 120 to move relative to the steering knuckle 110, thereby facilitating the disengagement of the steering knuckle 110 and the steering pull rod 120.

[0082] In some embodiments, as shown in FIG. 4, the circular arc segment 124 extends along the circumference of the collision boss 123 and surrounds the outer circumference of the collision boss 123, so that the collision boss 123 is connected with the connecting body 121 through the circular arc segment 124 at each location, thereby solving the technical problem of stress concentration at the connection between the collision boss 123 and the connecting body 121 to some extent.

[0083] In some embodiments, as shown in FIGS. 1, 7 and 8, the rod body 121 is further provided with a guide boss 125, and the steering knuckle 110 has an outer wall surface 111 facing the steering pull rod 120. The guide boss 125 is arranged between the rod body 121 and the outer wall surface 111, and is used to drive the steering pull rod 120 to move along the extension direction of the outer wall surface 111 when it contacts the steering knuckle 110. That is, when the impact force causes the guide boss 125 on the steering pull rod 120 to contact the steering knuckle 110, the guide boss 125 guides the steering pull rod 120 to move along the extension direction of the outer wall surface 111, so that the steering pull rod 120 and the steering knuckle 110 can effectively produce relative displacement, thereby facilitating the disengagement of the steering knuckle 110 and the steering pull rod 120, facilitating the wheel 200 to fly out, and reducing the extrusion of the wheel 200 to the vehicle cabin and the upper body.

[0084] In some embodiments, as shown in FIG. 1, at least a portion of the outer wall surface 111 extends downward in a direction away from the rod body 121. Here, it means that at least a portion of the outer wall surface 111 of the steering knuckle 110 facing the steering pull rod 120 simultaneously extends in a direction away from the rod body 121 and downward, so that when the guide boss 125 drives the steering pull rod 120 to move along the extension direction of the outer wall surface 111, the steering pull rod 120 can effectively move and simultaneously move downward, thereby facilitating the relative movement of the steering pull rod 120 and the steering knuckle 110, and thereby facilitating the disengagement of the steering knuckle 110 and the steering pull rod 120, and reducing the difficulty of disengagement.

[0085] In some embodiments, the guide boss 125 is arranged on the rod body 121 and protrudes toward the outer wall surface 111, thereby ensuring the working performance of the guide boss 125 to some extent.

[0086] Optionally, in the advancing direction of the vehicle 1000, the guide boss 125 is spaced apart from the outer wall surface 111 to ensure that the steering tie rod 120 can effectively move relative to the steering knuckle 110 when the vehicle 1000 is impacted and the impact force moves towards the steering tie rod 120, thereby facilitating the disengagement of the steering knuckle 110 and the steering tie rod 120.

[0087] In some embodiments, as shown in FIGS. 1, 7 and 8, in the advancing direction of the vehicle 1000, the guide boss 125 is disposed opposite the impact boss 123. That is, in the advancing direction of the vehicle 1000, the guide boss 125 is disposed opposite the impact boss 123, which can reasonably utilize the space on the rod body 121, so that the guide boss 125 and the impact boss 123 can be disposed on the rod body 121 at the same time, while also ensuring the working performance of the guide boss 125 and the impact boss 123 to some extent, thereby facilitating the improvement of the use safety of the vehicle 1000.

[0088] In a specific example, as shown in FIGS. 1, 7 and 8, the guide boss 125 is disposed on the rear side of the connecting body 1211 and is formed as an integral piece with the connecting body 1211, which not only enables the guide boss 125 to be disposed between the rod body 121 and the outer wall surface 111, but also reduces the difficulty of forming the guide boss 125 and facilitates the improvement of the positional stability of the guide boss 125, thereby ensuring the working performance of the guide boss 125 to some extent.

[0089] In some embodiments, the guide boss 125 and the impact boss 123 are connected and formed as an integral piece (not shown in the example). This not only reduces the difficulty of forming the guide boss 125 and the impact boss 123, but also enables the guide boss 125 and the impact boss 123 to support each other, improves the positional stability of the guide boss 125 and the impact boss 123, and facilitates the improvement of the structural strength of the guide boss 125 and the impact boss 123, thereby improving the working performance of the guide boss 125 and the impact boss 123.

[0090] Of course, in other embodiments, only the impact boss 123 can be provided (as shown in FIGS. 1-4), which not only facilitates the disengagement of the steering knuckle 110 and the steering tie rod 120, but also simplifies the structure of the steering tie rod 120 and reduces the manufacturing difficulty of the steering tie rod 120.

[0091] In some other embodiments, the collision boss 123 can also be arranged to extend around the circumference of the connecting body 1211 and surround one circle of the outer circumference of the connecting body 1211 (not shown in the example figure), at this time, part of the structure of the collision boss 123 is formed as the guide boss 125, and the guide boss 125 is arranged between the rod body 121 and the outer wall surface 111, which can further facilitate the disengagement of the knuckle 110 and the steering tie rod 120, and at the same time, the difficulty of forming the guide boss 125 can be reduced.

[0092] The steering system 100 for the vehicle 1000 of the embodiments of the present application will be described in detail below with reference to the accompanying drawings of the specification.

[0093] As shown in FIG. 1, the steering system 100 for the vehicle 1000 of the embodiments of the present application comprises a knuckle 110 and a steering tie rod 120, the knuckle 110 has an outer wall surface 111 opposite to the steering tie rod 120, at least a part of the outer wall surface 111 extends downwardly in a direction away from the steering tie rod 120, and the upper end of the knuckle 110 is adapted to be connected to the vehicle body of the vehicle 1000.

[0094] In combination with FIGS. 1-4, the steering tie rod 120 comprises a rod body 121, a rotating connecting piece 122, a collision boss 123 and a guide boss 125, the rod body 121 comprises a connecting body 1211 and an outer rod 1212 connected to each other, the connecting body 1211 is provided with the rotating connecting piece 122, the rod body 121 is rotatably connected to the lower end of the knuckle 110 through the rotating connecting piece 122, and a part of the rotating connecting piece 122 has a cross-sectional area smaller than that of the remaining part.

[0095] In combination with FIGS. 1, 7 and 8, the collision boss 123 is arranged at the front side of the connecting body 1211, the guide boss 125 is arranged between the connecting body 1211 and the outer wall surface 111, in the forward direction of the vehicle 1000, the guide boss 125 is arranged opposite to the collision boss 123, the guide boss 125 is used to drive the steering tie rod 120 to move along the extension direction of the outer wall surface 111 when contacting the knuckle 110, the collision boss 123 is connected to the connecting body 1211 through an arc segment 124 and formed as an integral piece with the connecting body 1211, the collision boss 123 protrudes forwardly from the knuckle 110 and the protruding length of the collision boss 123 from the knuckle 110 is not less than 22 mm, in the height direction of the vehicle 1000, the minimum thickness of the collision boss 123 is greater than 8 mm, the collision boss 123 extends along the circumference of the connecting body 1211, and the included angle between the opposite two side walls of the collision boss 123 in the circumferential direction of the connecting body 1211 is not less than 40°.

[0096] The vehicle 1000 of the embodiments of the present application will be described below with reference to the accompanying drawings of the specification.

[0097] The vehicle 1000 according to the embodiment of the application comprises the above-mentioned steering system 100, and the specific structure of the steering system 100 is not described herein.

[0098] Since the steering system 100 according to the embodiment of the application has the above-mentioned technical effects, the vehicle 1000 according to the embodiment of the application can reduce the extrusion of the wheels 200 to the vehicle cabin and the upper body when the vehicle 1000 encounters a collision, thereby reducing the risk of injury of the driver and the passenger in the collision, and reducing the design requirements of the upper body and the weight of the upper body, so as to improve the use safety of the vehicle 1000, and also to reduce the manufacturing difficulty of the upper body and facilitate the lightweight design of the upper body.

[0099] In a specific embodiment, as shown in FIGS. 9 and 10, the vehicle 1000 according to the embodiment of the application adopts the steering system 100 according to the application, and when the vehicle 1000 encounters a 25% offset collision, the wheels 200 fly out, thereby reducing the extrusion of the wheels 200 to the vehicle cabin and the upper body.

[0100] It can be understood that the steering system 100 for the vehicle 1000 and other configurations and operations of the vehicle 1000 according to the embodiment of the application are known to those skilled in the art, and will not be described in detail herein.

[0101] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0102] The above is only the preferred embodiment of the application and is not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A steering system (100) for a vehicle (1000), wherein, include: Steering knuckle (110), the upper end of which is adapted to be connected to the body of the vehicle (1000); A steering tie rod (120) includes a rod body (121), a rotating connector (122), and a collision boss (123). The rod body (121) is rotatably connected to the lower end of the steering knuckle (110) through the rotating connector (122). A portion of the rotating connector (122) has a smaller cross-sectional area than the rest. The collision boss (123) is located on the rod body (121) and protrudes from the steering knuckle (110) in a direction away from it.

2. The steering system (100) for a vehicle (1000) according to claim 1, wherein, The collision boss (123) protrudes forward from the steering knuckle (110).

3. The steering system (100) for a vehicle (1000) according to claim 1 or 2, wherein, The collision boss (123) and the rod (121) are a single piece.

4. The steering system (100) for a vehicle (1000) according to any one of claims 1-3, wherein, The protrusion length of the collision boss (123) protruding from the steering knuckle (110) is not less than 22mm.

5. The steering system (100) for a vehicle (1000) according to any one of claims 1-4, wherein, The rod (121) includes a connecting body (1211) and an outer pull rod (1212) that are connected to each other, and the connecting body (1211) is provided with the rotating connector (122); The front side of the connecting body (1211) and / or the outer tie rod (1212) is provided with the collision boss (123), which protrudes from the steering knuckle (110).

6. The steering system (100) for a vehicle (1000) according to claim 5, wherein, The collision boss (123) is integrally formed with the connecting body (1211) and / or the outer tie rod (1212).

7. The steering system (100) for a vehicle (1000) according to claim 5, wherein, The collision boss (123) is provided on the connecting body (1211).

8. The steering system (100) for a vehicle (1000) according to claim 7, wherein, In the height direction of the vehicle (1000), the minimum thickness of the collision boss (123) is greater than 8 mm.

9. The steering system (100) for a vehicle (1000) according to claim 7 or 8, wherein, The collision boss (123) extends circumferentially along the connecting body (1211), and the included angle between the opposite side walls of the collision boss (123) in the circumferential direction of the connecting body (1211) is not less than 40°.

10. The steering system (100) for a vehicle (1000) according to any one of claims 7-9, wherein, The collision boss (123) is connected to the connecting body (1211) via an arc segment (124).

11. The steering system (100) for a vehicle (1000) according to any one of claims 1-10, wherein, The rod body (121) is also provided with a guide boss (125). The steering knuckle (110) has an outer wall surface (111) facing the steering tie rod (120). The guide boss (125) is located between the rod body (121) and the outer wall surface (111). The guide boss (125) is used to drive the steering tie rod (120) to move along the extension direction of the outer wall surface (111) when it contacts the steering knuckle (110).

12. The steering system (100) for a vehicle (1000) according to claim 11, wherein, At least a portion of the outer wall surface (111) extends downward in a direction away from the rod (121).

13. The steering system (100) for a vehicle (1000) according to claim 11 or 12, wherein, In the forward direction of the vehicle (1000), the guide boss (125) is positioned opposite the collision boss (123).

14. The steering system (100) for a vehicle (1000) according to any one of claims 11-13, wherein, The guide boss (125) is connected to the collision boss (123) and forms a single piece.

15. A vehicle (1000), wherein, Includes the steering system (100) according to any one of claims 1-14.

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