CN211032725U

CN211032725U - Knuckle assembly and rear suspension

Info

Publication number: CN211032725U
Application number: CN201921707917.XU
Authority: CN
Inventors: 李东阳; 王旭
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-17
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a knuckle assembly and rear suspension belongs to vehicle technical field. The steering knuckle assembly comprises a steering knuckle body and a ball pin arranged on the steering knuckle body, and an elastic clamping ring is arranged between the ball pin and the steering knuckle body; the knuckle body is provided with two caliper fixing positions, and each caliper fixing position can be correspondingly provided with a brake caliper. The steering knuckle body provided by the utility model has the advantages that through the arrangement of the two caliper fixing positions, the steering knuckle assembly can be assembled with two brake calipers, the problems of structural arrangement and strength of the double brake calipers are fully solved, and sufficient braking force can be provided while the electronic parking function is realized; meanwhile, the elastic snap ring is arranged between the ball pin and the steering knuckle body, so that the pulling-out force of the ball pin is improved, and the problem that the conventional interference fit cannot meet the requirement of high pulling-out force of the ball pin is solved.

Description

Knuckle assembly and rear suspension

Technical Field

The utility model relates to the technical field of vehicles, especially, relate to a knuckle assembly and rear suspension.

Background

The rear suspension of a passenger vehicle is a general name of all force transmission connecting devices between a vehicle frame (or a bearing type vehicle body) and an axle (or wheels), and can be generally divided into a connecting rod type and a swing arm type. The steering knuckle assembly is the most critical part in a connecting rod type rear suspension structure and mainly used for connecting each swing arm, a hub bearing, a brake caliper and the like of a multi-connecting rod independent suspension to bear the load transmitted by a wheel and transmit the force and moment generated under the working conditions of acceleration, braking and the like.

Because the arrangement space of the steering knuckle is limited, the steering knuckle structure in the prior art limits the arrangement of a braking structure, so that a vehicle cannot provide sufficient braking force and cannot meet the requirement on reliability; meanwhile, the steering knuckle body and the ball stud are in interference fit only conventionally, so that the connection stability of the steering knuckle is poor, the ball stud is easy to pull out, and the bearing capacity of the whole rear suspension is reduced.

Accordingly, it is desirable to provide a knuckle assembly and rear suspension that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a knuckle assembly can realize fully arranging of braking structure, has guaranteed the stability of being connected of knuckle body and bulb round pin simultaneously.

Another object of the utility model is to provide a rear suspension, it can satisfy the requirement that bearing capacity is strong, the reliability is high.

In order to realize the purpose, the following technical scheme is provided:

a steering knuckle assembly comprises a steering knuckle body and a ball pin arranged on the steering knuckle body, wherein an elastic snap ring is arranged between the ball pin and the steering knuckle body; the knuckle body is provided with two caliper fixing positions, and each caliper fixing position can be correspondingly provided with a brake caliper.

Preferably, the knuckle body is provided with a pin hole, and the ball pin penetrates through the pin hole; the inner wall of the pin hole is provided with an installation step, and the outer wall of the ball pin is provided with an annular installation flange; the mounting flange is abutted to the mounting step.

Preferably, the elastic snap ring and the mounting flange are distributed at intervals along the central axis of the ball stud.

Preferably, the caliper fixing position is provided with a mounting hole in the knuckle body.

Preferably, a through hole penetrating along the central axis is formed in the ball stud, and the ball stud is in bolted connection with the trapezoidal arm through the through hole; the end face of the connecting end of the ball pin and the trapezoid arm is provided with a plurality of convex teeth, and the convex teeth are uniformly distributed along the circumferential direction of the through hole.

Preferably, the steering knuckle body is made of high-strength nodular cast iron.

The rear suspension comprises two brake calipers, a control arm assembly and a trapezoidal arm, and further comprises the steering knuckle assembly in any scheme, wherein the two brake calipers are respectively arranged on two caliper fixing positions of the steering knuckle body; the two ends of the ball pin along the central axis direction are connected with the trapezoidal arms.

Preferably, the rear suspension further comprises two sub dust blocking discs, and the sub dust blocking discs and the brake calipers are sequentially distributed at intervals in the circumferential direction of the steering knuckle body.

Preferably, the sub dust blocking plate is connected to the knuckle body by a dust blocking plate connecting bolt.

Preferably, the rear suspension further comprises an integrated dust guard plate arranged between a hub unit of the vehicle and the knuckle assembly.

Compared with the prior art, the beneficial effects of the utility model are that:

the steering knuckle body provided by the utility model has the advantages that through the arrangement of the two caliper fixing positions, the steering knuckle assembly can be assembled with two brake calipers, the problems of structural arrangement and strength of the double brake calipers are fully solved, and sufficient braking force can be provided while the electronic parking function is realized; meanwhile, the elastic snap ring is arranged between the ball pin and the steering knuckle body, so that the pulling-out force of the ball pin is improved, and the problem that the conventional interference fit cannot meet the requirement of high pulling-out force of the ball pin is solved.

Drawings

Fig. 1 is a schematic structural view of a knuckle assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly of the ball stud and the knuckle body in the embodiment of the present invention;

fig. 3 is a schematic partial structural view of a rear suspension according to an embodiment of the present invention.

Reference numerals:

100-a knuckle assembly; 200-brake calipers; 300-separating dust-blocking plate; 301-dust guard connecting bolt;

1-a knuckle body; 2-ball stud; 3-an elastic snap ring;

11-caliper fixing position; 12-mounting a step; 21-mounting a flange; 22-a through hole; 23-lobe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

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 only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, the present embodiment provides a knuckle assembly, which specifically includes a knuckle body 1 and a ball stud 2 disposed on the knuckle body 1, wherein an elastic snap ring 3 is disposed between the ball stud 2 and the knuckle body 1; the knuckle body 1 is provided with two caliper fixing positions 11, and each caliper fixing position 11 can be correspondingly provided with one brake caliper 200. The knuckle body 1 provided by the embodiment is provided with the two caliper fixing positions 11, so that the knuckle assembly 100 can be assembled with the two brake calipers 200, the problems of structural arrangement and strength of the double brake calipers 200 are fully solved, and sufficient braking force can be provided while the electronic parking function is realized; meanwhile, the elastic clamping ring 3 is arranged between the ball pin 2 and the steering knuckle body, so that the pulling-out force of the ball pin 2 is improved, and the problem that the conventional interference fit cannot meet the requirement of high pulling-out force of the ball pin 2 is solved.

Further, referring to fig. 1 and 2, a pin hole is provided on the knuckle body 1, and the ball stud 2 is inserted into the pin hole. The inner wall of the pin hole is provided with an installation step 12, and the outer wall of the ball pin 2 is provided with an annular installation flange 21; during the assembly, ball stud 2 passes through the pin hole through interference fit and locates, and mounting flange 21 and installation step 12 butt on it simultaneously can also restrict ball stud 2's displacement when fixing a position. Furthermore, the elastic snap ring 3 and the mounting flange 21 are distributed at intervals along the central axis of the ball stud 2, so that stable matching between the ball stud 2 and the knuckle body 1 is realized, the pulling-out force of the ball stud 2 is obviously improved, the ball stud is not easy to pull out, and the bearing capacity and the reliability of the knuckle assembly 100 are further improved.

Specifically, the caliper fixing position 11 is an installation hole formed in the knuckle body 1; each caliper holding portion 11 includes two mounting holes for mounting the brake caliper 200. Optionally, a reinforcing rib is arranged on the knuckle body 1 near the mounting hole to ensure the rigidity of the brake caliper 200 during braking and the strength of the knuckle body. Optionally, a reinforcing rib is additionally arranged on the steering knuckle body 1 near the pin hole, so that the connection stability of the ball stud 2 and the steering knuckle body 1 is improved. Further specifically, the knuckle body 1 in this embodiment is made of a high-strength ductile iron material, so that the weight of the entire knuckle body 1 is reduced, the bearing capacity of the knuckle body can be greatly improved, and the reliability of the structure of the knuckle assembly 100 is improved.

Referring to fig. 3, the present embodiment further provides a rear suspension, which includes two brake calipers 200, two control arm assemblies, and the trapezoidal arm, and further includes the above-mentioned knuckle assembly 100, where the two brake calipers 200 are respectively disposed on two caliper fixing positions 11 of the knuckle body 1; both ends of the ball pin 2 along the central axis direction are connected with the trapezoidal arm. The rear suspension provided by the embodiment realizes the arrangement of the double-brake caliper 200 through the design of the steering knuckle assembly 100, and the braking force of the whole vehicle is greatly improved; meanwhile, the pulling-out force of the ball pin 2 is improved by the elastic clamping ring 3, so that the connection relation between the steering knuckle and the trapezoidal arm is more stable, and the bearing capacity and reliability of the whole rear suspension are effectively improved.

Referring to fig. 2 again, the ball stud 2 is provided with a through hole 22 penetrating along the central axis thereof, and the ball stud 2 is bolted to the trapezoid arm through the through hole 22; further, be provided with a plurality of dogtooths 23 on the terminal surface of bulb round pin 2 and trapezoidal arm link, a plurality of dogtooths 23 have increased the roughness of bulb round pin 2 terminal surface along the circumference evenly distributed of through-hole 22 through setting up of dogtooths 23, and then have improved coefficient of friction, have reduced the bolt diameter size specification that adopts when bolted connection between bulb round pin 2 and the trapezoidal arm. Alternatively, the configuration of teeth 23 may be manufactured by a router process.

In specific implementation, since the bleeding screw of the brake caliper 200 needs to maintain a specific arrangement position to facilitate the implementation of the corresponding function of the brake caliper 200, the upper ends of the two brake calipers 200 on the knuckle body 1 should be disposed as close as possible to the upper control arm of the control arm assembly, so as to expand the arrangement space of the bleeding screw, and optimize the arrangement direction of the bleeding screw of the brake caliper 200. Meanwhile, the upper end of the brake caliper 200 is arranged close to the upper control arm as much as possible, and sufficient arrangement space is reserved below the knuckle assembly 100, so that arrangement of other parts of the rear suspension is facilitated.

Further, referring to fig. 3, the rear suspension provided in this embodiment further includes two sub dust-blocking discs 300, the sub dust-blocking discs 300 and the brake calipers 200 are sequentially distributed at intervals in the circumferential direction of the knuckle body 1, and smooth implementation of the braking function can be ensured by setting the two sub dust-blocking discs 300 to cooperate with the double brake calipers 200. Alternatively, in order to secure the coupling stability of the sub dust blocking plate 300, each sub dust blocking plate 300 is coupled to the knuckle body 1 using two dust blocking plate coupling bolts 301, respectively. Further, the distance between the two dust-blocking plate connection bolts 301 on each sub-dust-blocking plate 300 should be as far as possible, i.e. each dust-blocking plate connection bolt 301 is arranged close to the outer edge of the sub-dust-blocking plate 300, so as to meet the NVH requirements of the sub-dust-blocking plate 300. In some other embodiments, the two sub-discs 300 of the rear suspension may be designed as an integral structure, i.e. only one integral dust-blocking disc is provided and disposed between the hub unit and the knuckle assembly 100 of the vehicle, so as to simplify the assembly process.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The steering knuckle assembly is characterized by comprising a steering knuckle body (1) and a ball pin (2) arranged on the steering knuckle body (1), wherein an elastic snap ring (3) is arranged between the ball pin (2) and the steering knuckle body (1); the knuckle body (1) is provided with two caliper fixing positions (11), and each caliper fixing position (11) can be correspondingly provided with a brake caliper (200).

2. The knuckle assembly according to claim 1, wherein the knuckle body (1) is provided with a pin hole, and the ball stud (2) is inserted into the pin hole; an installation step (12) is arranged on the inner wall of the pin hole, and an annular installation flange (21) is arranged on the outer wall of the ball pin (2); the mounting flange (21) abuts against the mounting step (12).

3. The steering knuckle assembly according to claim 2, wherein said snap ring (3) and said mounting flange (21) are spaced apart along a central axis of said ball stud (2).

4. The knuckle assembly according to claim 1, wherein said caliper holding portion (11) is a mounting hole provided in said knuckle body (1).

5. The knuckle assembly according to claim 1, wherein the ball stud (2) is provided with a through hole (22) penetrating along a central axis, and the ball stud (2) is in bolted connection with the trapezoid arm through the through hole (22); the ball stud (2) and the end face of the trapezoid arm connecting end are provided with a plurality of convex teeth (23), and the convex teeth (23) are uniformly distributed along the circumferential direction of the through hole (22).

6. The knuckle assembly according to claim 1, characterized in that said knuckle body (1) is made of high-strength ductile iron material.

7. A rear suspension comprising a brake caliper (200), a control arm assembly and a trapezoidal arm, characterized by further comprising a knuckle assembly as claimed in any one of claims 1 to 6, wherein the brake caliper (200) is provided with two, and the two brake calipers (200) are respectively arranged on two caliper fixing positions (11) of the knuckle body (1); the two ends of the ball pin (2) in the direction of the central axis are connected with the trapezoidal arms.

8. The rear suspension according to claim 7, characterized in that it further comprises two sub dust discs (300), said sub dust discs (300) being sequentially spaced from the brake caliper (200) in the circumferential direction of the knuckle body (1).

9. Rear suspension according to claim 8, characterized in that the dust separation disc (300) is connected to the knuckle body (1) by a dust disc connection bolt (301).

10. The rear suspension of claim 7, further comprising an integral dust guard disc disposed between a wheel hub unit of a vehicle and the knuckle assembly.