CN212447775U

CN212447775U - Knuckle assembly suitable for front drive and four-wheel drive and knuckle assembly mounting structure

Info

Publication number: CN212447775U
Application number: CN202021169209.8U
Authority: CN
Inventors: 唐慧英; 校玲敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-02
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a knuckle assembly and knuckle assembly mounting structure suitable for forerunner, four-wheel drive, wherein, the knuckle assembly includes knuckle body, upper yoke connector, lower yoke connector, brake caliper first connector, brake caliper second connector and steering linkage; the steering knuckle body is provided with a shaft hole, and the upper fork arm connector is provided with a vertical hole A; the lower fork arm connector is provided with a vertical hole B, the connecting line of the center of the vertical hole A and the center of the vertical hole B forms the axis of the steering kingpin, the inner inclination angle of the axis of the steering kingpin is 0 degree, the offset distance of the steering kingpin is 0mm, the back inclination angle gamma of the axis of the steering kingpin is 6-12 degrees, the trailing distance d of the steering kingpin is-30 mm to-45 mm, and the projection of the axis of the steering kingpin on the vertical plane in the width direction of the tire is superposed with the vertical bisector in the width of the tire. The utility model provides a knuckle assembly helps promoting forerunner, four-wheel drive automobile steering system's stability, maneuverability and driver and crew security.

Description

Knuckle assembly suitable for front drive and four-wheel drive and knuckle assembly mounting structure

Technical Field

The utility model relates to an automobile steering system technical field, concretely relates to knuckle assembly and knuckle assembly mounting structure suitable for forerunner, four-wheel drive.

Background

In the prior art, as shown in fig. 1, the steering kingpin of the conventional automobile steering system is arranged in a backward tilting, inward tilting, offset and trailing distance mode, and the natural state of the front wheel train is shown in a splayed posture, at which the front frame is the lowest point (in the case of small friction force between the tire and the ground).

As shown in fig. 2, when the vehicle steering system is assembled with the tie rod and the steering gear, the vehicle body is raised and the posture is normal, and at this time, the left and right tires are mutually pulled or pushed by the steering gear, the tie rod and the related ball head, etc. to maintain balance, the steering system has low stability in the actual use process, and more importantly, the steering system also resists the huge acting force of rapid acceleration and rapid braking, which results in short service life of the related components.

If the steering wheel is turned to a certain side, the inner wheel system continuously raises the frame, a certain forward steering and returning moment is generated under the action of gravity, while the outer wheel system lowers the frame, a moment opposite to the steering and returning force is generated, and finally, the pull rods are mostly mutually offset through the steering gear, so that the steering and returning force of the conventional automobile is not ideal, which is the fundamental reason, and only a little weak steering and returning force is generated when the inner steering wheel is turned to a large angle.

At present, the steering and returning force of a conventional automobile is good, and the steering and returning force is realized by the fact that a steering power-assisted system participates in acting, and a part of energy is consumed while the steering power-assisted system acts, so that the service life of the system is shortened, and the cost is increased. Moreover, the conventional automobile has to generate a certain degree of torque steering due to the existence of offset distance, and the stability and the comfort are partially lost.

In view of the above, the applicant discloses a knuckle assembly (publication No. CN2019107444256) comprising a knuckle body, an upper yoke connector, a lower yoke connector, a first brake caliper connector and a second brake caliper connector; the first end of the upper fork arm connecting body is arranged on the steering knuckle body, and the second end of the upper fork arm connecting body is provided with a vertical hole A; the first end of the lower fork arm connector is fixedly connected with the steering knuckle body, the second end of the lower fork arm connector is provided with a vertical hole B, a forward inclination angle gamma formed by a connecting line of the center of the vertical hole A and the center of the vertical hole B and an automobile plumb line is 5-13 degrees, and a ground trailing distance d between a contact point of an extension line of the connecting line of the center of the vertical hole A and the center of the vertical hole B and the ground center of the tire is 40-50 mm. The knuckle of this application is applicable to all rear-wheel drive vehicles, and transmission efficiency can obtain different degrees promotion, but is not applicable to forerunner and four-wheel drive vehicle.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a knuckle assembly and knuckle assembly mounting structure can be applicable to forerunner and four-wheel drive's car, solves one of the technical problem among the above-mentioned correlation technique to a certain extent at least.

Therefore, the utility model discloses a first aspect provides a knuckle assembly suitable for forerunner, four-wheel drive, including knuckle body, upper yoke connector, lower yoke connector, brake caliper first connector, brake caliper second connector and steering linkage;

the steering knuckle body is cylindrical, and an axial hole is formed in the axial center of the steering knuckle body;

the first end of the upper fork arm connecting body is fixedly arranged on the steering knuckle body, the main body of the upper fork arm connecting body can bypass the tire tread, and the second end of the upper fork arm connecting body is provided with a vertical hole A for connecting an upper fork arm;

the first end of the lower fork arm connecting body is fixedly connected to the outer ring surface of the steering knuckle body, the second end of the lower fork arm connecting body is provided with a vertical hole B for connecting a lower fork arm, and the vertical hole B and the vertical hole A are coaxially arranged;

the first end of the steering pull rod connecting body is fixedly connected to the outer ring surface of the steering knuckle body, and the second end of the steering pull rod connecting body is provided with a vertical hole C for connecting a steering pull rod;

the first ends of the first connecting body of the brake caliper and the second connecting body of the brake caliper are connected to the outer ring surface of the steering knuckle body, and the second ends of the first connecting body of the brake caliper and the second connecting body of the brake caliper are provided with transverse connecting holes for connecting the brake caliper;

the connecting line of the center of the vertical hole A and the center of the vertical hole B forms a kingpin axis, the inner inclination angle of the kingpin axis is 0 degree, the offset distance of the kingpin is 0mm, the caster angle gamma of the kingpin axis is 6-12 degrees, and the towing distance d of the kingpin is-30 mm to-45 mm; and the projection of the axis of the steering kingpin on the vertical plane in the width direction of the tire coincides with the perpendicular bisector on the width of the tire.

The utility model provides a knuckle assembly, after the offset of steering main pin was 0mm, can't form the moment of torsion and turn to, help improving the stability and the travelling comfort of automobile body.

When the left transmission shaft and the right transmission shaft output power, the whole vehicle can run linearly without being connected with a steering gear, and the whole vehicle can run normally and randomly if one side of the whole vehicle is out of control, so that the safety is improved, and the accident rate is reduced.

After the whole vehicle is steered, the two wheel systems simultaneously lift the vehicle body, the steering aligning torque is added left and right, aligning force is obvious no matter the vehicle is driven at low speed or high speed, the stability is greatly improved, and meanwhile, the steering aligning torque does not need to do work by steering assistance, so that the assistance energy consumption can be saved by about 30 percent, the service life of a steering knuckle is prolonged, and the use cost is reduced.

The utility model provides a knuckle assembly can also have following additional technical characterstic:

according to the utility model discloses an example, go up the yoke connector and the yoke connector all is located the rear of wheel hub perpendicular bisector down, the steering linkage connector is located the place ahead of wearing to establish the vertical plumb line of wheel hub.

According to an example of the invention, the caster angle γ of the kingpin axis is 8 ° -10 °.

According to an example of the present invention, the trailing distance d from the contact point of the kingpin axis with the ground to the tire ground center is 45 mm.

According to an example of the present invention, the upper yoke connecting body is formed in a circular arc structure.

According to an example of the present invention, the vertical hole a, the vertical hole B, and the vertical hole C are tapered through holes.

According to an example of the present invention, the lateral connection hole is a through hole.

A second aspect of the present invention provides a knuckle assembly mounting structure, including a hub unit, a hub bearing, a brake caliper, a tire, and a knuckle assembly as described above;

a hub unit is arranged in a center hole of the tire, an installation ring extending along the axial direction of the hub unit is arranged on the inner side wall of the hub unit, and two ends of the outer ring surface of the installation ring are rotatably connected with a shaft hole of the steering knuckle body through hub bearings respectively;

one end of the rzeppa universal joint is connected with the transmission shaft, and the other end of the rzeppa universal joint is fixedly provided with a flange which is detachably arranged on the hub unit;

the brake calipers are located between the inner ring surface of the tire and the outer ring surface of the steering knuckle body and are detachably and fixedly connected with the first brake caliper connecting bodies and the second brake caliper connecting bodies respectively.

According to the utility model discloses an example, the axle cross-section in shaft hole is worker's shape, the wheel hub bearing is located on the big footpath anchor ring in shaft hole.

According to the utility model discloses an example, the excircle portion card that is located two wheel hub bearings on the big footpath anchor ring in shaft hole locates on the I-shaped step face, and the interior circle portion of two wheel hub bearings links into an integrated entity through the bearing support to it is fixed through wearing to establish the combination of collar bolt.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a front wheel of an automobile arranged in a splayed posture in the prior art;

FIG. 2 is a schematic view of a prior art vehicle front wheel mounted steering gear;

fig. 3 is a schematic perspective view of a front-wheel drive and four-wheel drive knuckle assembly according to embodiment 1 of the present invention;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view of FIG. 3;

fig. 6 is a front view of a knuckle assembly mounting structure provided in embodiment 2 of the present invention;

fig. 7 is a rear cross-sectional view of a knuckle assembly mounting structure provided in embodiment 2 of the present invention;

in the reference symbols:

the brake caliper comprises a steering knuckle assembly 1, a steering knuckle body 11, a shaft hole 111, an upper fork arm connecting body 12, a vertical hole A121, a lower fork arm connecting body 13, a vertical hole B131, a brake caliper first connecting body 14, a brake caliper second connecting body 15, a steering pull rod connecting body 16 and a steering kingpin axis 17;

the hub unit 2, the mounting ring 21, the hub bearing 3, the bearing support 31, the brake caliper 4, the tire 5, the rzeppa joint 6, and the flange 61.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Example 1

Referring to fig. 3 to 5, the present embodiment provides a front-wheel drive and four-wheel drive knuckle assembly, which includes a knuckle body 11, an upper yoke connector 12, a lower yoke connector 13, a first brake caliper connector 14, a second brake caliper connector 15, and a tie rod connector 16;

the knuckle body 11 is cylindrical, and a shaft hole 111 is formed in the axial center thereof.

The first end of the upper fork arm connecting body 12 is fixedly arranged on the steering knuckle body 11, the main body of the upper fork arm connecting body 12 can bypass the tire tread, and the second end of the upper fork arm connecting body 12 is provided with a vertical hole A121 for connecting an upper fork arm;

when the steering knuckle assembly 1 is installed on a medium and small-sized vehicle, because the tire of the small-sized vehicle is small, the upper yoke connecting body 12 can be designed into an arc-shaped structure, the first end of the upper yoke connecting body 12 is fixedly arranged on the outer annular surface of the steering knuckle body 11, the main body of the upper yoke connecting body 12 bypasses the side surface of the tire, the radian of the main body of the yoke connecting body 12 is in direct proportion to the size of the tire, and the radian can be specifically determined according to the size of the tire 5. When the knuckle assembly 11 is mounted on a large-sized vehicle, the upper arm connecting body 12 may be formed to have an inclined structure because the tire of the large-sized vehicle is large.

A first end of the lower yoke connecting body 13 is fixedly connected to the outer annular surface of the knuckle body 11, a second end of the lower yoke connecting body 13 is provided with a vertical hole B131 for connecting a lower yoke, and the vertical hole B131 and the vertical hole A121 are coaxially arranged;

a first end of the tie rod connector 16 is fixedly connected to the outer annular surface of the knuckle body 11, a second end of the tie rod connector 16 is provided with a vertical hole C163 for connecting a tie rod, and in actual production, the first end of the tie rod connector can also be fixed to the upper yoke connector 12.

First ends of the first connecting body 14 and the second connecting body 15 of the brake caliper are connected to the outer ring surface of the knuckle body 11, and second ends of the first connecting body 14 and the second connecting body 15 of the brake caliper are provided with transverse connecting holes 141 for connecting the brake caliper;

as shown in fig. 3, a line connecting the center of the vertical hole a121 and the center of the vertical hole B131 forms a kingpin axis 17, the inner inclination angle of the kingpin axis 17 is 0 °, and the offset distance of the kingpin is 0 mm;

as shown in FIG. 4, the caster angle γ of the kingpin axis 17 is 6-12 and the tow distance d of the kingpin is-30 mm to-45 mm.

The projection of the kingpin axis 17 onto a plane perpendicular to the tire width direction coincides with a perpendicular bisector of the tire width.

Above-mentioned knuckle assembly 1, after the offset distance of steering kingpin is 0mm, can't form the moment of torsion and turn to, help improving the stability and the travelling comfort of automobile body.

When the left transmission shaft 7 and the right transmission shaft 7 output power, the whole vehicle can run linearly without being connected with a steering gear, and the whole vehicle can run normally and randomly if one side of the whole vehicle is out of control, so that the safety is improved, and the accident rate is reduced.

Under the prerequisite of same motorcycle type, adopt the utility model discloses a knuckle assembly 1 can make the outside rear of last yoke remove to increase the space of arranging in the front cabin, be favorable to arranging the maintenance of installation and vehicle of spare parts such as engine, air conditioner.

In this embodiment, the upper and lower yoke links 12, 13 are both located rearward of the hub mid-vertical.

In this embodiment, the caster angle γ of the kingpin axis 17 is 8 ° -10 °, when the caster angle is greater than 10 °, the direction becomes gradually heavy, there are shimmy and steering "tie-up" phenomena, and when the caster angle is less than 8 °, the stability and steering return effect are gradually affected.

In this embodiment, the vertical holes a121, B131 and C163 are tapered through holes, and are designed to be connected with the ball head.

In this embodiment, the transverse connecting hole 141 is preferably a through hole, which facilitates a mating connection with a prior art brake caliper.

Example 2

Referring to fig. 6 and 7, the present embodiment provides a knuckle assembly mounting structure including a hub unit 2, a hub bearing 3, a brake caliper 4, a tire 5, a birfield universal joint 6, and the knuckle assembly 1 provided in embodiment 1;

as shown in fig. 6, the hub unit 2 is installed in the center hole of the tire 5, the inner sidewall of the hub unit 2 has a mounting ring 21 extending along the axial direction of the hub unit 2, and both ends of the outer circumferential surface of the mounting ring 21 are rotatably connected to the shaft holes 111 of the knuckle body 11 through the hub bearings 3, respectively;

one end of the rzeppa universal joint 6 is connected with the transmission shaft 7, the other end is fixedly provided with a flange 61, and the flange 61 is detachably arranged on the hub unit 2;

the brake caliper 4 is located between the inner annular surface of the tire 5 and the outer annular surface of the knuckle body 11, and is detachably and fixedly connected with the brake caliper first connecting body 14 and the brake caliper second connecting body 15 respectively.

In this embodiment, the axial cross section of shaft hole 111 is i-shaped, hub bearing 3 is located on the big footpath anchor ring of shaft hole 111, the excircle portion card that is located two hub bearings 3 on the big footpath anchor ring of shaft hole 111 is located on the I-shaped step face, two hub bearings 3's interior circle portion links into an integrated entity through bearing support 31, and fixed through wearing to establish collar 21 bolt combination, for the convenience of installing hub bearing 3, can set up the screens recess that holds hub bearing 3's interior circle portion and bearing support 31 at the outer rampart of collar 21, support 31 through the bearing and connect two hub bearings 3, help improving hub bearing 3's stability.

The utility model provides a knuckle assembly mounting structure, the first aspect helps promoting the stability of automobile steering system, maneuverability and driver and crew security, and the second aspect helps promoting the auto mechanical steering and just returns the performance, reduces whole car manufacturing cost or saves the consumption of the in-process electron helping hand energy of traveling to and the life of extension spare part.

The related parts of the steering engine, the pull rod and the ball head steering are low in stress, the impact force of acceleration and braking does not exist, the service life of the steering engine is prolonged, and the cost is reduced.

Because the utility model provides a front wheel steering system can reduce the energy consumption of electron power-assisted steering system and automobile body electron stable system, is particularly suitable for the installation again on the unmanned intelligent automobile.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A steering knuckle assembly suitable for front driving and four-wheel driving comprises a steering knuckle body (11), an upper fork arm connecting body (12), a lower fork arm connecting body (13), a brake caliper first connecting body (14), a brake caliper second connecting body (15) and a steering pull rod connecting body (16);

the steering knuckle body (11) is a cylinder, and the axial center of the steering knuckle body is provided with a shaft hole (111);

the first end of the upper fork arm connecting body (12) is fixedly arranged on the steering knuckle body (11), and the second end of the upper fork arm connecting body (12) is provided with a vertical hole A (121) for connecting an upper fork arm;

the first end of the lower fork arm connecting body (13) is fixedly connected to the outer ring surface of the steering knuckle body (11), the second end of the lower fork arm connecting body (13) is provided with a vertical hole B (131) used for connecting a lower fork arm, and the vertical hole B (131) and the vertical hole A (121) are coaxially arranged;

a first end of the steering pull rod connecting body (16) is fixedly connected to the outer ring surface of the steering knuckle body (11), and a second end of the steering pull rod connecting body (16) is provided with a vertical hole C (163) for connecting a steering pull rod;

the first ends of the first connecting body (14) of the brake caliper and the second connecting body (15) of the brake caliper are connected to the outer ring surface of the steering knuckle body (11), and the second ends of the first connecting body (14) of the brake caliper and the second connecting body (15) of the brake caliper are provided with transverse connecting holes (141) used for connecting the brake caliper;

the method is characterized in that:

the connecting line of the center of the vertical hole A (121) and the center of the vertical hole B (131) forms a kingpin axis (17), the inner inclination angle of the kingpin axis (17) is 0 degrees, the offset distance of the kingpin is 0mm, the caster angle gamma of the kingpin axis (17) is 6-12 degrees, the trailing distance d of the kingpin is-30 mm to-45 mm, and the projection of the kingpin axis (17) on the vertical plane in the width direction of the tire coincides with the vertical bisector on the width of the tire.

2. The knuckle assembly adapted for forward drive, four-wheel drive according to claim 1, wherein: the upper fork arm connecting body (12) and the lower fork arm connecting body (13) are located behind the perpendicular bisector of the hub.

3. A steering knuckle assembly adapted for forward drive, four-wheel drive according to claim 1, characterized in that said kingpin axis (17) has a caster angle γ of 8 ° -10 °.

4. The knuckle assembly adapted for forward drive and four-wheel drive as claimed in claim 3, wherein the trailing distance d of the kingpin is 45 mm.

5. A front-wheel drive, four-wheel drive steering knuckle assembly according to claim 1, characterized in that said upper yoke link (12) is configured in the shape of a circular arc.

6. The knuckle assembly adapted for front-wheel drive and four-wheel drive as claimed in claim 1, wherein said vertical hole a (121), vertical hole B (131) and vertical hole C (163) are tapered through holes.

7. The knuckle assembly adapted for front-wheel drive and four-wheel drive as claimed in claim 1, wherein said transverse connecting hole (141) is a through hole.

8. The utility model provides a knuckle assembly mounting structure which characterized in that: comprising a hub unit (2), a hub bearing (3), a brake caliper (4), a tyre (5), a birfield joint (6) and a steering knuckle assembly (1) according to any one of claims 1 to 7;

a hub unit (2) is arranged in a center hole of the tire (5), an installation ring (21) extending along the axial direction of the hub unit (2) is arranged on the inner side wall of the hub unit (2), and two ends of the outer ring surface of the installation ring (21) are rotatably connected with a shaft hole (111) of the steering knuckle body (11) through hub bearings (3) respectively;

one end of the ball-cage universal joint (6) is connected with the transmission shaft (7), the other end of the ball-cage universal joint is fixedly provided with a flange (61), and the flange (61) is detachably arranged on the hub unit (2);

the brake caliper (4) is located between the inner ring surface of the tire (5) and the outer ring surface of the steering knuckle body (11) and is detachably and fixedly connected with the first brake caliper connecting body (14) and the second brake caliper connecting body (15) respectively.

9. The knuckle assembly mounting structure according to claim 8, wherein: the axial section of shaft hole (111) is I-shaped, and wheel hub bearing (3) is located on the big footpath anchor ring face in shaft hole (111).

10. The knuckle assembly mounting structure according to claim 9, wherein: the outer circle parts of the two hub bearings (3) positioned on the large-diameter ring surface of the shaft hole (111) are clamped on the I-shaped step surface, the inner circle parts of the two hub bearings (3) are connected into a whole through a bearing support (31) and are combined and fixed through bolts penetrating through the mounting ring (21).