Steering mechanism of a vehicle and vehicle thereof

Abstract

The application relates to the automobile technical field and discloses a steering mechanism of a vehicle and the vehicle, wherein the steering mechanism comprises a steering knuckle, a lower swing arm, a steering lever, a transmission rod and a first shaft; the lower swing arm has a first mounting point and a second mounting point; along the left-right direction of the vehicle, the first mounting point is located at the end of the lower swing arm facing the steering knuckle, the first mounting point is hinged to the steering knuckle, and the second mounting point is arranged at intervals from the first mounting point; one end of the steering lever is connected to the steering knuckle through the transmission rod, the first shaft is installed at the other end of the steering lever, and the first shaft is connected to the second mounting point through a bearing. The steering lever and the lower swing arm are connected through the bearing, so that the steering lever only has a rotation freedom degree relative to the lower swing arm, the stability of the swing of the steering lever is improved, and the steering precision of the steering mechanism is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a steering mechanism for a vehicle and a vehicle thereof. Background Technology

[0002] The steering mechanism is mounted on the front suspension of a car to ensure that the car can change its direction of travel according to the driver's actions. Currently, the steering mechanism of some vehicles on the market includes a steering knuckle, a control arm, a lever, and a transmission rod. The control arm and transmission rod are respectively mounted on the steering knuckle, and the lever is connected to the control arm and transmission rod respectively. The steering gear is connected to the lever through a tie rod, which drives the lever to swing, thereby causing the steering knuckle to rotate and achieve wheel steering.

[0003] However, the lever swing stability in the steering mechanism currently on the market is poor, which affects the steering accuracy of the steering mechanism. Utility Model Content

[0004] This application provides a steering mechanism for a vehicle and a vehicle thereof, thereby improving the steering accuracy of the vehicle.

[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 steering mechanism for a vehicle, comprising: a steering knuckle, a lower control arm, a steering lever, a transmission rod, and a first shaft. The lower control arm has a first mounting point and a second mounting point. Along the left-right direction of the vehicle, the first mounting point is located at the end of the lower control arm facing the steering knuckle and is hinged to the steering knuckle. The second mounting point is spaced apart from the first mounting point. One end of the steering lever is connected to the steering knuckle via the transmission rod, and the first shaft is mounted on the other end of the steering lever. The first shaft is rotatably connected to the second mounting point via a bearing.

[0007] Furthermore, the bearing includes an inner ring, an outer ring, and balls disposed between the inner and outer rings. The outer ring is mounted at a second mounting point, and the inner ring is connected to a first shaft. Along the axial direction of the bearing, the size of the inner ring is larger than the size of the outer ring.

[0008] Furthermore, a mounting hole is formed in the second mounting point, extending from the steering lever side to the side away from the steering lever. The mounting hole includes a first hole segment and a second hole segment connected in sequence. The inner diameter of the first hole segment is larger than the inner diameter of the second hole segment, so that a mounting shoulder is formed between the first hole segment and the second hole segment. The end face of the outer ring away from the steering lever abuts against the mounting shoulder.

[0009] Furthermore, the inner ring is connected to the first axis via a spline.

[0010] Furthermore, a raised ring is formed in the middle of the first shaft to divide the first shaft into a first shaft segment and a second shaft segment; the steering mechanism also includes a first nut, which is installed on the first shaft, and an inner ring is installed between the first nut and the raised ring.

[0011] Furthermore, the steering mechanism also includes a second nut, which is mounted on the second shaft section, and the steering lever is mounted between the raised ring and the second nut.

[0012] Furthermore, the steering mechanism also includes a tie rod, the end of which is hinged to the steering lever towards the steering knuckle, thereby causing the steering lever to swing.

[0013] Furthermore, along the vertical direction of the vehicle, the end of the tie rod facing the steering knuckle is located between the steering lever and the lower control arm.

[0014] Furthermore, the steering mechanism also includes a stabilizer bar, which is hinged to the lower control arm.

[0015] Secondly, embodiments of this application also provide a vehicle including the aforementioned steering mechanism.

[0016] By connecting the steering lever and the lower control arm with a bearing, the steering lever has only rotational freedom relative to the lower control arm, which improves the stability of the steering lever's swing and thus improves the steering accuracy of the steering mechanism. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a structural schematic diagram of the steering mechanism provided in this application.

[0019] Figure 2 yes Figure 1 A partial schematic diagram of the steering mechanism shown.

[0020] Figure 3 yes Figure 2 The diagram shows the steering mechanism with the steering knuckles hidden.

[0021] Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the lower control arm of the steering mechanism and the assembly at the second mounting point.

[0022] Figure 5 yes Figure 1 A schematic diagram of the structure of the first shaft of the steering mechanism shown.

[0023] Explanation of reference numerals in the attached drawings: Steering knuckle 1, lower control arm 2, first mounting point 201, first ball joint 2011, second mounting point 202, mounting hole 2021, first hole section 20211, second hole section 20212, mounting shoulder 20213, third hole section 20214, third mounting point 203, steering lever 3, drive rod 4, second ball joint 401, first shaft 5, raised ring 501, first shaft section 502, spline section 5021, threaded section 5022, second shaft section 503, bearing 6, inner ring 601, keyway 6011, spline hole section 6012, through hole section 6013, outer ring 602, ball 603, first nut 7, second nut 8, tie rod 9, third ball joint 901, stabilizer bar 10, fourth ball joint 1001, steering gear 11. Detailed Implementation

[0024] 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.

[0025] Firstly, such as Figure 1 and Figure 2 As shown, as one implementation, this application provides a vehicle steering mechanism, including: a steering knuckle 1, a lower control arm 2, a steering lever 3, a transmission rod 4, and a steering gear 11. The steering knuckle 1 is used to mount the vehicle's wheels, the lower control arm 2 is used to connect the steering knuckle 1 and the vehicle's frame, the steering lever 3 is used to connect to the vehicle's steering gear 11, and under the action of the steering gear 11, the steering lever 3 is driven to swing. The transmission rod 4 is used to connect the steering lever 3 and the steering knuckle 1, and when the steering lever 3 swings, it drives the steering knuckle 1 to swing.

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, specifically, the lower control arm 2 has a first mounting point 201, a second mounting point 202 and a third mounting point 203, which are arranged sequentially on the lower control arm 2 along the left and right direction of the vehicle.

[0027] Along the left-right direction of the vehicle, the first mounting point 201 is located at the end of the lower control arm 2 facing the steering knuckle 1, and the first mounting point 201 is hinged to the steering knuckle 1. The third mounting point 203 is located at the end of the lower control arm 2 facing the steering gear 11, and the third mounting point 203 is hinged to the vehicle frame.

[0028] The second mounting point 202 is located between the first mounting point 201 and the third mounting point 203, and the second mounting point 202 is spaced apart from the first mounting point 201 and the third mounting point 203, so that the steering lever 3 can drive the steering knuckle 1 to swing through the transmission rod 4.

[0029] One end of the steering lever 3 is connected to the steering knuckle 1 via the transmission rod 4, and the other end is connected to the second mounting point 202.

[0030] Specifically, the steering mechanism also includes a first shaft 5 and a bearing 6. The first shaft 5 is mounted on the end of the steering lever 3. The first shaft 5 is at least partially inserted into the second mounting point 202, and the first shaft 5 and the second mounting point 202 are connected by the bearing 6.

[0031] By connecting the steering lever 3 and the lower control arm 2 with the bearing 6, the steering lever 3 has only a rotational degree of freedom relative to the lower control arm 2, which improves the stability of the swing of the steering lever 3 and thus improves the steering accuracy of the steering mechanism.

[0032] To more clearly illustrate the technical solution of this application, the following definitions are provided: Figure 1 The directions shown are up, down, left, and right. The left and right directions of the vehicle are... Figure 1 The left and right directions are shown. The up and down directions of the vehicle are... Figure 1 The up and down directions are shown.

[0033] like Figure 4 As shown, in one implementation, the bearing 6 includes an inner ring 601, an outer ring 602, and balls 603. The inner ring 601 and the outer ring 602 are arranged coaxially, and the balls 603 are located between the inner ring 601 and the outer ring 602. The outer ring 602 is installed at the second mounting point 202, and the inner ring 601 is connected to the first shaft 5.

[0034] Along the axial direction of bearing 6, the size of the inner ring 601 is larger than the size of the outer ring 602.

[0035] Furthermore, the end face of the inner ring 601 facing the steering lever 3 and the end face of the outer ring 602 facing the steering lever 3 are located on the same plane, so that the end face of the inner ring 601 away from the steering lever 3 is lower than the end face of the outer ring 602 away from the steering lever 3. This allows at least a portion of the inner ring 601 to be connected to the mounting hole 2021 of the second mounting point 202 through a clearance fit or transition fit, thereby reducing the yaw angle of the inner ring 601, improving the stability of the steering lever 3's swing, and improving the steering accuracy of the steering mechanism.

[0036] like Figure 4 As shown, in one implementation, a mounting hole 2021 is formed in the second mounting point 202, and the bearing 6 is installed in the mounting hole 2021.

[0037] From one side of the steering lever 3 to the side away from the steering lever 3, the mounting hole 2021 includes a first hole segment 20211 and a second hole segment 20212 connected in sequence. The inner diameter of the first hole segment 20211 is larger than the inner diameter of the second hole segment 20212, so that a mounting shoulder 20213 is formed between the first hole segment 20211 and the second hole segment 20212. The end face of the outer ring 602 away from the steering lever 3 abuts against the mounting shoulder 20213, and the bearing 6 is positioned and installed through the mounting shoulder 20213.

[0038] At least a portion of the inner ring 601 extends into the second hole section 20212, and the inner ring 601 and the second hole section 20212 are connected by a transition fit or a clearance fit, so as to limit the yaw angle of the inner ring 601 by the second hole section 20212, further improve the stability of the steering lever 3 swing, and improve the steering accuracy of the steering mechanism.

[0039] As one implementation, the mounting hole 2021 also includes a third hole segment 20214, which is connected to the end of the second hole segment 20212 away from the first hole segment 20211, and the inner diameter of the third hole segment 20214 is larger than the inner diameter of the second hole segment 20212.

[0040] As one implementation, the inner ring 601 is connected to the first axis 5 via a spline.

[0041] Specifically, at least a portion of the inner hole of the inner ring 601 is a spline hole, and at least a portion of the first shaft 5 is a spline shaft. The inner ring 601 is connected to the first shaft 5 through the spline shaft and the spline hole, so that the first shaft 5 can drive the inner ring 601 to rotate.

[0042] As one implementation, the inner hole of the inner ring 601 includes a spline hole section 6012 and a through hole section 6013. The through hole section 6013 is connected to the end of the spline hole section 6012 away from the steering lever 3, and the keyway 6011 is evenly distributed on the inner wall of the spline hole section 6012.

[0043] like Figure 5 As shown, a protruding ring 501 is formed in the middle of the first shaft 5 to divide the first shaft 5 into a first shaft segment 502 and a second shaft segment 503. At least a portion of the first shaft segment 502 is inserted into the bearing 6, and at least a portion of the second shaft segment 503 is inserted into the steering lever 3.

[0044] The first shaft segment 502 includes a spline segment 5021 and a threaded segment 5022. The threaded segment 5022 is connected to the end of the spline segment 5021 that is away from the raised ring 501. The spline segment 5021 is connected to the spline hole segment 6012, so that the inner ring 601 is connected to the first shaft 5. The threaded segment 5022 passes through the through hole segment 6013.

[0045] like Figure 4As shown, in one implementation, the steering mechanism also includes a first nut 7, which is mounted on the first shaft 5. The bearing 6 is located between the first nut 7 and the protruding ring 501. At least a portion of the first shaft 5 is fixed in the bearing 6 by the first nut 7, thereby improving the assembly stability of the first shaft 5 and the bearing 6.

[0046] Specifically, the first shaft 5 is positioned through the second mounting point 202 at the end of the lower control arm 2, and the first nut 7 is installed at the end of the first shaft 5 extending out of the lower control arm 2. The first nut 7 abuts against the lower end face of the inner ring 601 to fix the bearing 6 to the first shaft 5, thereby improving the connection stability between the bearing 6 and the first shaft 5, improving the stability of the swing of the steering lever 3, and thus improving the steering accuracy of the steering mechanism.

[0047] At least a portion of the first nut 7 is located within the third hole section 20214 to reduce the axial length of the first shaft 5, thereby preventing the first shaft 5 from interfering with other components of the vehicle.

[0048] In one implementation, the steering mechanism also includes a second nut 8, a second shaft segment 503 passing through the steering lever 3, and the second nut 8 is installed on the second shaft segment 503, such that the steering lever 3 is installed between the protruding ring 501 and the second nut 8.

[0049] It should be noted that the steering lever 3 can be connected to the first shaft 5 by spline or interference fit so that the first shaft 5 can be rotated when the steering lever 3 swings.

[0050] like Figure 3 As shown, in one implementation, a first ball joint 2011 is installed on the lower end face of the first mounting point 201, and the first mounting point 201 is connected to the steering knuckle 1 through the ball joint 2011.

[0051] like Figure 3 As shown, in one implementation, the two ends of the transmission rod 4 are respectively equipped with second ball joints 401, and the two ends of the transmission rod 4 are respectively connected to the steering lever 3 and the steering knuckle 1 through the ball joints 401.

[0052] like Figure 3 As shown, as one implementation, the steering mechanism also includes a tie rod 9, the end of which is hinged to the steering lever 3 facing the steering knuckle 1, and the steering lever 3 is driven to swing through the tie rod 9.

[0053] Specifically, the end of the tie rod 9 away from the steering knuckle 1 is connected to the steering gear 11. When the steering gear 11 is working, it drives the tie rod 9 to move, so that the end of the tie rod 9 toward the steering knuckle 1 has a movement amount in the left and right direction of the vehicle, thereby causing the steering lever 3 to swing.

[0054] The end of the tie rod 9 facing the steering knuckle 1 is equipped with a third ball joint 901, and the tie rod 9 is connected to the steering lever 3 through the third ball joint 901.

[0055] As one implementation, along the vertical direction of the vehicle, the end of the tie rod 9 facing the steering knuckle 1 is located between the steering lever 3 and the lower control arm 2. During the movement of the tie rod 9, interference between the tie rod 9 and other components of the vehicle and the steering knuckle 1 is prevented, ensuring that the steering mechanism has a large rotation angle.

[0056] like Figure 2 As shown, as one implementation method, the steering mechanism also includes a stabilizer bar 10, which is hinged to the lower control arm 2. The stabilizer bar 10 connects the lower control arms 2 on the left and right sides of the vehicle, so that the swing angles of the two lower control arms 2 are more synchronized, thereby improving the vehicle's cornering stability.

[0057] The end of the stabilizer bar 10 facing the lower swing arm 2 is equipped with a fourth ball joint 1001, and the stabilizer bar 10 is connected to the lower swing arm 2 through the fourth ball joint 1001.

[0058] Secondly, as one implementation, this application also provides a vehicle that includes the aforementioned steering mechanism.

[0059] 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.

[0060] 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 steering mechanism for a vehicle, characterized in that, include: Steering knuckle (1); The lower control arm (2) has a first mounting point (201) and a second mounting point (202). Along the left-right direction of the vehicle, the first mounting point (201) is located at the end of the lower control arm (2) facing the steering knuckle (1) and the first mounting point (201) is hinged to the steering knuckle (1). The second mounting point (202) is spaced apart from the first mounting point (201). Steering lever (3), transmission rod (4) and first shaft (5), one end of the steering lever (3) is connected to the steering knuckle (1) through the transmission rod (4), the first shaft (5) is installed at the other end of the steering lever (3), and the first shaft (5) is rotatably connected to the second mounting point (202) through bearing (6).

2. The steering mechanism for a vehicle according to claim 1, characterized in that, The bearing (6) includes an inner ring (601), an outer ring (602), and balls (603) disposed between the inner ring (601) and the outer ring (602). The outer ring (602) is mounted at the second mounting point (202), and the inner ring (601) is connected to the first shaft (5). Along the axial direction of the bearing (6), the inner ring (601) is larger than the outer ring (602).

3. The steering mechanism for a vehicle according to claim 2, characterized in that, The second mounting point (202) has a mounting hole (2021) formed in it, extending from the side of the steering lever (3) to the side away from the steering lever (3). The mounting hole (2021) includes a first hole segment (20211) and a second hole segment (20212) connected in sequence. The inner diameter of the first hole segment (20211) is larger than the inner diameter of the second hole segment (20212), so that a mounting shoulder (20213) is formed between the first hole segment (20211) and the second hole segment (20212). The end face of the outer ring (602) away from the steering lever (3) abuts against the mounting shoulder (20213).

4. A vehicle steering mechanism according to claim 2, characterized in that, The inner ring (601) is connected to the first shaft (5) by a spline.

5. A vehicle steering mechanism according to claim 2, characterized in that, A protruding ring (501) is formed in the middle of the first shaft (5) to divide the first shaft (5) into a first shaft segment (502) and a second shaft segment (503). The steering mechanism also includes a first nut (7), which is mounted on the first shaft (5), and the inner ring (601) is mounted between the first nut (7) and the raised ring (501).

6. A vehicle steering mechanism according to claim 5, characterized in that, The steering mechanism also includes a second nut (8), which is mounted on the second shaft segment (503), and the steering lever (3) is mounted between the protruding ring (501) and the second nut (8).

7. A vehicle steering mechanism according to claim 1, characterized in that, The steering mechanism also includes a tie rod (9), the end of which is hinged to the steering lever (3) facing the steering knuckle (1), and the steering lever (3) is driven to swing through the tie rod (9).

8. A vehicle steering mechanism according to claim 7, characterized in that, Along the vertical direction of the vehicle, the end of the tie rod (9) facing the steering knuckle (1) is located between the steering lever (3) and the lower control arm (2).

9. A vehicle steering mechanism according to claim 1, characterized in that, The steering mechanism also includes a balance bar (10), which is hinged to the lower control arm (2).

10. A vehicle, characterized in that, Includes the steering mechanism as described in any one of claims 1 to 9.

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