CN113734281A

CN113734281A - Vehicle disc type steering knuckle, steering axle and vehicle

Info

Publication number: CN113734281A
Application number: CN202111105990.1A
Authority: CN
Inventors: 邱佳明; 王献运; 刘洋
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2021-12-03

Abstract

The invention relates to a vehicle disc steering knuckle, a steering axle and a vehicle, wherein the vehicle disc steering knuckle comprises: a knuckle body having a first working surface; the first steering knuckle arm is arranged on the first working surface and extends along a first direction; the second steering knuckle arm is arranged on the first working surface and is arranged at an interval with the first steering knuckle arm, and the second steering knuckle arm extends along a second direction; the first steering knuckle arm and the second steering knuckle arm are integrally formed with the steering knuckle main body, and the first direction and the second direction are arranged at an angle with the first working surface. According to the invention, the first steering knuckle arm and the second steering knuckle arm are integrated on the steering knuckle main body in an integrated manner, so that the integration level of the overall structure of the vehicle disc type steering knuckle is higher, the stability of the vehicle disc type steering knuckle is improved, and the damage of the vehicle disc type steering knuckle in the assembling process is avoided.

Description

Vehicle disc type steering knuckle, steering axle and vehicle

Technical Field

The invention relates to the technical field of vehicle chassis components, in particular to a vehicle disc type steering knuckle, a steering axle and a vehicle.

Background

The steering knuckle is one of important parts in a steering axle of a vehicle, and can enable the vehicle to stably run and sensitively transmit the running direction. When the vehicle steers, the knuckle needs to support and drive the front wheels to rotate around the kingpin shaft to steer the vehicle, and needs to transmit and bear the load of the front part of the vehicle. Therefore, the structure of the steering knuckle not only relates to the stability of connection between the steering axle and the vehicle body, but also influences the bearing of force in the rotating process of the vehicle, thereby influencing the rotating performance of the vehicle. Therefore, the structure of the knuckle is extremely important for safety and stability of the entire vehicle.

In the construction of the steering knuckle, the knuckle arm plays a crucial role, providing a mounting and connection foundation for the steering knuckle and the external structure. Therefore, the degree of integration of the knuckle arm with the knuckle affects how firmly the outer structure is attached to the knuckle. Further, the positional relationship between the knuckle arms on the knuckle also affects the steering performance of the vehicle.

However, the steering knuckles known in the prior art all incorporate only a single knuckle arm, and therefore when multiple knuckle arms are encountered, they are typically assembled by a threaded or tapered connection. However, this connection method has a low degree of integration, so that the connection strength when the outer structure is connected to the knuckle via the knuckle arm is low. In addition, when the threaded connection mode is adopted for assembly and disassembly, the structure of the threaded part is easy to damage, and when the taper hole connection mode is adopted, the precision of the conical surface is poor and the conical surface is easy to damage. Therefore, the steering knuckle structure in the prior art is low in integration level and complex in operation, and the whole axle of the steering axle is easy to lose effectiveness, so that the user experience is influenced.

Disclosure of Invention

In view of the above, it is necessary to provide a vehicle disc type steering knuckle, a steering axle and a vehicle with high integration, high stability and simple operation, aiming at the problems of low integration level and complex operation of the steering knuckle in the prior art.

A vehicle disc steering knuckle comprising:

a knuckle body having a first working surface;

the first steering knuckle arm is arranged on the first working surface and extends along a first direction;

the second steering knuckle arm is arranged on the first working surface and is arranged at an interval with the first steering knuckle arm, and the second steering knuckle arm extends along a second direction;

the first steering knuckle arm and the second steering knuckle arm are integrally formed with the steering knuckle main body, and the first direction and the second direction are arranged at an angle with the first working surface.

In one embodiment, the first direction intersects the second direction at an angle less than 90 degrees.

In one embodiment, a first connecting taper hole is formed in one end, away from the first working surface, of the first knuckle arm, and is used for connecting a longitudinal tie rod; and/or

And a second connecting taper hole is formed in one end, far away from the first working surface, of the second knuckle arm and is used for connecting a tie rod.

In one embodiment, the first running surface is adapted to abut a front beam of the vehicle between the first and second track arms.

In one embodiment, a first pin hole is formed at an end of the first knuckle arm connected to the first working surface, and a second pin hole is formed at an end of the second knuckle arm connected to the first working surface, and the first pin hole and the second pin hole are configured to allow a king pin to sequentially pass therethrough.

In one embodiment, the vehicle disc type steering knuckle comprises a first connecting part and a second connecting part which are used for being connected with a brake caliper, and the first connecting part and the second connecting part are arranged at intervals and are respectively positioned at two sides of the first steering knuckle arm and the second steering knuckle arm, which are opposite to each other;

wherein the first connecting portion and the second connecting portion are integrally formed with the knuckle main body.

In one embodiment, the first connecting portion and the second connecting portion extend in a direction parallel to the first working surface.

In one embodiment, the first connecting portion and the second connecting portion have top surfaces, and the top surfaces are planar sections and perpendicular to the first working surface.

In one embodiment, a first mounting portion is provided on the first working surface, the first mounting portion being located between the first track arm and the second track arm.

In one embodiment, the knuckle body further has a second working surface disposed opposite the first working surface;

the second working face epirelief is equipped with the strengthening rib, the strengthening rib is located first installation department with between the second knuckle arm.

In one embodiment, the vehicle disc type steering knuckle includes a main shaft portion integrally formed with the knuckle body, the main shaft portion being provided on the second working surface for connection with a hub bearing.

The invention also provides a steering axle comprising the vehicle disc type steering knuckle.

The invention also provides a vehicle comprising a steering axle as described above.

Foretell vehicle disk knuckle, steering axle and vehicle, with first knuckle arm and second knuckle arm integrated into one piece integrated on the knuckle main part, make vehicle disk knuckle overall structure integrated level higher, improve its stability, avoid causing vehicle disk knuckle to damage in the assembling process.

Drawings

FIG. 1 is a schematic view of the overall structure of a vehicle disc steering knuckle according to an embodiment of the present application;

FIG. 2 is a top view of the vehicle disc knuckle shown in FIG. 1;

FIG. 3 is a side view of the vehicle disc knuckle shown in FIG. 1;

FIG. 4 is a partial schematic view of the vehicle disc steering knuckle shown in FIG. 1;

the automobile steering knuckle comprises a 100-automobile disc type steering knuckle body, a 10-steering knuckle body, a 20-first steering knuckle arm, a 30-second steering knuckle arm, a 40-crotch portion, a 50-main shaft portion, a 11-first working surface, a 12-second working surface, a 21-first connecting taper hole, a 22-first pin hole, a 31-second connecting taper hole, a 32-second pin hole, a 51-fastening portion, a 52-matching portion, a 61-first connecting portion, a 62-second connecting portion, a 63-plane section, a 111-first mounting portion, a 221-mounting surface, a 511-limiting surface, a 621-concave table, a 1111-first mounting hole and a 1112-second mounting hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Fig. 1 shows a schematic view of an overall structure of a vehicle disc knuckle according to an embodiment of the present invention, fig. 2 shows a plan view of the vehicle disc knuckle according to the embodiment of the present invention, fig. 3 shows a side view of the vehicle disc knuckle according to the embodiment of the present invention, and fig. 4 shows a partial schematic view of the vehicle disc knuckle according to the embodiment of the present invention. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.

Referring to fig. 1, an embodiment of the present invention provides a vehicle disc type knuckle 100 including a knuckle body 10, a first knuckle arm 20, and a second knuckle arm 30. The knuckle body 10 has a first working surface 11, the first knuckle arm 20 and the second knuckle arm 30 are both disposed on the first working surface 11, and the first knuckle arm 20 and the second knuckle arm 30 are disposed at an interval. Further, the first knuckle arm 20 is provided to extend in the first direction, and the second knuckle arm 30 is provided to extend in the second direction. Specifically, the first knuckle arm 20 and the second knuckle arm 30 are integrally formed with the knuckle body 10, and the first direction and the second direction are both disposed at an angle to the first working surface 11. Through the mode of one shot forming, can make vehicle disc knuckle 100's integrated level higher to make its stability higher, and can avoid complicated connection process.

Further, the first direction intersects the second direction at an angle less than 90 degrees. In the present embodiment in particular, the first track arm 20 is perpendicular to the first running surface 11. A front beam (not shown) of the vehicle steer axle is disposed between the first knuckle arm 20 and the second knuckle arm 30, and is parallel to the first knuckle arm 20, and the front beam is connected to the first knuckle arm 20 and the second knuckle arm 30 by a kingpin shaft. Further, the first knuckle arm 20 can be connected to a trailing arm (not shown) and the second knuckle arm 30 can be connected to a tie rod (not shown), so that a steering trapezoid is formed between the first and

second knuckle arms

20 and 30 and the kingpin shaft, and the shape of the steering trapezoid affects the turning radius of the vehicle, thereby affecting the steering performance of the vehicle. Therefore, the angle between the projections of the first direction and the second direction in the direction parallel to the first working surface 11 is smaller than 90 °, the turning radius of the vehicle can be reduced, and the steering performance of the vehicle can be improved.

Referring to fig. 2, in some embodiments, an end of the first knuckle arm 20 away from the first working surface 11 is provided with a first connecting taper hole 21 for connecting a tie rod, and/or an end of the second knuckle arm 30 away from the first working surface 11 is provided with a second connecting taper hole 31 for connecting a tie rod. This makes it possible to increase the structural strength of the first knuckle arm 20 and the second knuckle arm 30, and to make the connection between the first knuckle arm 20 and the second knuckle arm 30 tighter.

As shown in fig. 3, in some embodiments, the first working surface 11 can abut the front vehicle beam between the first knuckle arm and the second knuckle arm. That is, a crotch portion 40 that abuts the front beam of the vehicle is formed between the first knuckle arm 20 and the second knuckle arm 30. Specifically, the crotch portion 40 is located on the first working surface 11 and between the first knuckle arm 20 and the second knuckle arm 30. The crotch portion 40 is adapted to be connected to a front beam of the vehicle, and when the vehicle disc knuckle 100 is connected to a steering axle (not shown), the end of the front beam abuts against the crotch portion 40, so that the front beam is positioned between the first knuckle arm 20 and the second knuckle arm 30, thereby enabling simultaneous connection to the first knuckle arm 20 and the second knuckle arm 30. The crotch portion 40 can facilitate the connection of the front frame to the vehicle disc knuckle 100, and reduce the complexity of the connection process.

Referring to fig. 1 again, in detail, a first pin hole 22 is formed at an end of the first knuckle arm 20 connected to the first working surface 11, a second pin hole 32 is formed at an end of the second knuckle arm 30 connected to the first working surface 11, and the first pin hole 22 and the second pin hole 32 are configured to allow the king pin to sequentially pass therethrough. When the front beam abuts against the crotch portion 40, the kingpin shaft is inserted through the first pin hole 22, the front beam, and the second pin hole 32 in this order, and the front beam is connected to the first knuckle arm 20 and the second knuckle arm 30, thereby completing the connection of the front beam to the vehicle disc knuckle 100. In the present embodiment, the hole wall thicknesses of the first pin hole 22 and the second pin hole 32 are both greater than or equal to 10 mm. This ensures the connection strength when the kingpin shaft is connected to the first pin hole 22 and the second pin hole 32.

In addition, to facilitate mounting of the king pin cover, the side of the first pin bore 22 facing away from the second pin bore 32 has a mounting surface 221. Specifically, during assembly, the king pin cover plate is fixedly mounted on the mounting surface 221. This makes it possible to further secure the connection between the vehicle disc knuckle 100 and the kingpin cover.

In some embodiments, the vehicle disc knuckle 100 includes a first connection portion 61 for connecting with a brake caliper. And the first connecting part 61 is provided with a connecting hole, and the brake caliper is fixed on the connecting part through the connecting part, so that the assembly of the brake caliper can be completed.

Further, the vehicle disc type steering knuckle 100 further includes a second connecting portion 62 disposed at a distance from the first connecting portion 61. The first connecting portion 61 and the second connecting portion 62 are located on opposite sides of the first knuckle arm 20 and the second knuckle arm 30, respectively, from each other. The first connecting portion 61 and the second connecting portion 62 are integrally formed with the knuckle main body 10, and each extend in a direction parallel to the first working surface 11. The second connecting portion 62 is also provided with a connecting hole, which is the same as the first connecting portion 61, and the brake caliper can be assembled by fixing the brake caliper thereto through the connecting member. The structure is stable and the operation is convenient.

Further, the first connecting portion 61 and the second connecting portion 62 each have a top surface, which is a planar section 63 and is perpendicular to the first working surface 11. After the brake caliper is mounted on the first connecting portion 61 and the second connecting portion 62, the influence of the brake cast housing on the vehicle disc steering knuckle 100 can be avoided through the flat section 63, so that the brake of each specification can be effectively ensured to be suitable for the vehicle disc steering knuckle 100. Therefore, the overall structure of the vehicle disc type steering knuckle 100 is more reasonable and optimized through simple structural design.

In addition, concave platforms 621 are formed in the middle positions of the first connecting portion 61 and the second connecting portion 62, and the concave platforms 621 are arranged to reduce the weight of the vehicle disc steering knuckle 100 as much as possible on the basis of ensuring the overall strength of the vehicle disc steering knuckle 100.

In some embodiments, the first working surface 11 is provided with a first mounting portion 111, the first mounting portion 111 being located between the first knuckle arm 20 and the second knuckle arm 30, i.e., the first mounting portion 111 is located on the crotch portion 40. Specifically, in the present embodiment, the first mounting portion 111 is configured as a mounting hole, and includes a first mounting hole 1111 and a second mounting hole 1112. The first mounting hole 1111 is used for mounting an ABS sensor, and the second mounting hole 1112 is used for mounting a limiting screw for limiting a front axle corner. It is understood that, in some other embodiments, two or more mounting holes may be provided, and the specific number thereof may be adjusted according to the actual use requirement, which is not described herein. In addition, in the present embodiment, a specific position of the reinforcing rib is located between the second pin hole 32 and the second mounting hole 1112.

As shown in fig. 4, in order to facilitate the connection of the vehicle disc knuckle 100 to an external structure, the knuckle body 10 also has a second working surface 12 that is disposed away from the first working surface 11. Further, a bead 121 is projected from the second operating surface 12, and the bead 121 is positioned between the first mounting portion 111 and the second knuckle arm 30. Specifically, the strength of the position under the sideslip working condition is weak through a finite element analysis means, the cross section area is increased through the arrangement of the reinforcing ribs 121, and therefore the mechanical property of the position is improved, and the overall strength of the vehicle disc type steering knuckle 100 is firmer, safer and more reliable. In addition, the reinforcing ribs 121 are convexly arranged on the second working surface 12, so that the connection and installation of the main pin shaft are not affected, and the overall structure of the vehicle disc type steering knuckle 100 is more reasonable.

In some embodiments, the vehicle disc type steering knuckle 100 includes a main shaft portion 50 integrally formed with the knuckle body 10, the main shaft portion 50 being provided on the second working surface 12 for connection with a hub bearing. The arrangement of the main shaft portion 50 enables the hub bearing and the vehicle disc type steering knuckle 100 to be quickly mounted and dismounted, and the assembly efficiency is improved.

Referring to fig. 2 and 3 again, the main shaft portion 50 further includes a fastening portion 51 and a matching portion 52. One end of the matching part 52 is connected with the second working surface 12, and the other end is connected with the fastening part 51. The fitting portion 52 is used for mounting the hub bearing, and the fastening portion 51 is used for connecting with a nut to fix the hub bearing. Specifically in the present embodiment, the mating portion 52 includes a first mounting section 521, a transition section 522 and a second mounting section 523 connected to each other. The first mounting section 521 and the second mounting section 523 are cylindrical structures, the axial directions of the first mounting section 521 and the second mounting section 523 are perpendicular to the second working surface 12, and the radius of the first mounting section 521 is smaller than that of the second mounting section 523. The transition section 522 has a truncated cone shape, and the radius thereof gradually increases from the first mounting section 521 side to the second mounting section 523 side. Therefore, the first mounting section 521 and the second mounting section 523 are respectively used for matching with the inner bearing and the outer bearing of the hub, and the transition section 522 adopts smooth transition, so that smooth mounting and dismounting of the hub bearing can be effectively ensured. On this basis, the fastening portion 51 is a cylindrical structure coaxial with the mating portion 52, and the outer surface of the cylindrical structure has a limiting surface 511 parallel to the axial direction thereof. When the hub bearing is fitted to the fitting portion 52, the hub bearing is fitted to the fastening portion 51 by a fastening nut to fasten the hub bearing to the fitting portion 52. In addition, the rotation of the fastening nut can be prevented by the provision of the stopper surface 511, thereby improving the fastening firmness of the hub bearing and the main shaft portion 50.

Based on the same concept as the vehicle disc steering knuckle 100 described above, the present invention also provides a steering axle including the vehicle disc steering knuckle 100 described above.

Based on the same concept as the steering axle described above, the present invention also provides a vehicle including the steering axle as described above.

When the ABS sensor is used specifically, the ABS sensor is installed in the first installation hole 1111, and the limiting screw is installed in the second installation hole 1112. The front beam is connected to the knuckle body 10 by abutting the front beam against the crotch portion 40 between the first knuckle arm 20 and the second knuckle arm 30, and inserting the kingpin shaft into the first pin hole 22, the front beam, and the second pin hole 32 in this order. The drag link is connected to the knuckle body 10 through the first connecting tapered hole 21, and the tie link is connected to the knuckle body 10 through the second connecting tapered hole 31. Further, the hub bearing is mounted on the fitting portion 52, and the fastening portion 51 is provided with the fastening nut, so that the hub bearing is fastened to the fitting portion 52, thereby improving the firmness of connection between the hub bearing and the main shaft portion 50. The caliper is attached to the knuckle main body 10 through the web portion 60, and thus, the overall assembly process of the vehicle disc knuckle 100 is completed.

The vehicle disc type steering knuckle 100, the steering axle and the vehicle in the above embodiments have at least the following advantages:

1) the first knuckle arm 20, the second knuckle arm 30, the main shaft part 50 and the connecting plate part 60 are integrated on the knuckle main body 10 in an integrated forging forming mode, so that the complexity of the installation process is reduced, the loss problem in the assembly process is effectively avoided, and the assembly efficiency is higher, the structural strength is high, and the assembly stability is better;

2) the reinforcing rib 121 is convexly arranged on the second working surface 12, and the reinforcing rib 121 is specifically positioned between the second pin hole 32 and the second mounting hole 1112, so that the cross-sectional area of the steering knuckle main body 10 can be increased, the mechanical property of the position is provided, and the vehicle disc steering knuckle 100 is higher in overall strength, and is safer and more reliable;

3) the connecting plate part 60 is provided with a plane section 61, so that the influence of a brake casting shell on the vehicle disc type steering knuckle 100 can be effectively avoided, the brakes of various specifications can be suitable for the vehicle disc type steering knuckle 100, and the application range is wider;

4) concave platforms 621 are formed in the middle positions of the first connecting plate 62 and the second connecting plate 63, so that the vehicle disc type steering knuckle 100 is as light as possible on the basis of ensuring the overall strength.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A vehicle disc knuckle, comprising:

a knuckle body having a first working surface;

2. The vehicle disc knuckle of claim 1, wherein the first direction intersects the second direction at an angle less than 90 degrees.

3. The vehicle disc knuckle according to claim 1, wherein a first connecting taper hole is formed in an end of the first knuckle arm away from the first working surface for connecting a trailing arm; and/or

4. The vehicle disc knuckle according to claim 1, wherein the first running surface is abuttable to a vehicle front beam between the first knuckle arm and the second knuckle arm.

5. The vehicle disc knuckle of claim 1, wherein an end of the first knuckle arm that is connected to the first running surface defines a first pin hole, an end of the second knuckle arm that is connected to the first running surface defines a second pin hole, and the first and second pin holes are configured to enable a kingpin shaft to be sequentially inserted therethrough.

6. The vehicle disc knuckle according to claim 1, comprising first and second connection portions for connection to a brake caliper, the first and second connection portions being spaced apart and located on opposite sides of the first and second knuckle arms, respectively;

7. The vehicle disc knuckle of claim 6, wherein the first and second connection portions extend in a direction parallel to the first running surface.

8. The vehicle disc knuckle of claim 6, wherein the first and second connection portions each have a top surface that is a plain surface and perpendicular to the first running surface.

9. The vehicle disc knuckle of claim 1, wherein a first mounting portion is provided on the first running surface, the first mounting portion being located between the first knuckle arm and the second knuckle arm.

10. The vehicle disc steering knuckle according to claim 9, characterized in that the knuckle body further has a second running surface disposed opposite the first running surface;

11. The vehicle disc knuckle according to claim 10, comprising a main shaft portion integrally formed with the knuckle body, the main shaft portion being provided on the second running surface for connection to a hub bearing.

12. A steering axle, characterized in that it comprises a vehicle disc steering knuckle according to any one of claims 1-11.

13. A vehicle characterized by comprising the steering axle according to claim 12.