A knuckle, a front suspension system and a vehicle

Abstract

The utility model discloses a knuckle, front suspension system and car, including the knuckle body of casting forming, knuckle body is equipped with by the bearing mounting hole of outside extension to the back side, the back side of knuckle body is equipped with the recessed cavity of recessing to the outside side in the position of corresponding bearing mounting hole, the cavity wall of recessed cavity forms encircling type reinforcing rib, the top of knuckle body is equipped with damper mounting part, and the damper mounting part extends upward from the top of knuckle body, and the inside of damper mounting part is equipped with hollow recess, and hollow recess forms hollow entrance in the cavity wall of recessed cavity. The utility model discloses through the implementation of large -area's hole digging weight reduction, and the recessed design is suitable simultaneously, forms certain depth thin wall four -corner surrounding structure, and the reinforcing rib of suitable whole circle slender encircling type, has promoted strength and durability, realizes the balance of light weight and performance. Meanwhile, the hollow casting structure is used to the damper mounting part, and the weight is reduced greatly through the hollow structure.

Description

Technical Field

[0001] This utility model is applicable to the automotive field, and in particular relates to a steering knuckle, a front suspension system, and an automobile. Background Technology

[0002] With the automotive industry's increasing demands for lightweighting, integration, and miniaturization, the steering knuckle, as a key load-bearing and connecting component in the suspension system, not only needs to maintain sufficient structural strength but also requires weight reduction, size reduction, and high integration. Poor load-bearing capacity or low structural strength in the steering knuckle can easily lead to brittle fracture, which will seriously affect vehicle safety performance. Excessive steering knuckle weight increases unsprung mass, affecting handling stability. Therefore, achieving a balance between performance and cost through structural improvements is particularly important.

[0003] In summary, the problems existing in the relevant technologies urgently need to be solved. Utility Model Content

[0004] The purpose of this invention is to solve at least one of the technical problems existing in the prior art, and to provide a steering knuckle, a front suspension system and an automobile.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] In a first aspect, a steering knuckle includes a cast steering knuckle body, the steering knuckle body having a bearing mounting hole extending from the outer side to the back side, the back side of the steering knuckle body having an outwardly recessed cavity at a position corresponding to the bearing mounting hole, the cavity wall forming a circumferential reinforcing rib, the top of the steering knuckle body having a damper mounting portion extending upward from the top of the steering knuckle body, the damper mounting portion having a hollow recessed hole inside, the hollow recessed hole forming a hollow entrance in the cavity wall of the recess.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the bottom of the steering knuckle body is provided with a lower control arm mounting part, the lower control arm mounting part is provided with a control arm ball pin mounting hole, the left side of the steering knuckle body is provided with a caliper mounting seat, the caliper mounting seat is provided with a brake caliper bolt mounting hole, and the right side of the steering knuckle body is provided with a steering tie rod mounting seat, the steering tie rod mounting seat is provided with a steering tie rod mounting hole.

[0008] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the steering knuckle body is provided with a wheel speed sensor mounting groove between the shock absorber mounting part and the steering tie rod mounting seat, and the bottom of the wheel speed sensor mounting groove is provided with a wheel speed sensor bolt mounting hole.

[0009] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, the steering knuckle body is provided with a bearing bolt mounting hole on the outer periphery of the bearing mounting hole, the bearing mounting hole extends from the outer bearing mounting plane of the steering knuckle body to the bottom of the cavity, and the outer end face of the steering knuckle body is provided with a mounting boss, the mounting boss being provided with a brake mudguard bolt mounting hole.

[0010] In a second aspect, a front suspension system includes a shock absorber and a steering knuckle as described in any implementation of the first aspect, wherein the lower end of the shock absorber is provided with a lower mounting bracket, the lower mounting bracket is provided with an outwardly extending first mounting lug and a second mounting lug, an assembly gap is formed between the first mounting lug and the second mounting lug, the shock absorber mounting portion is embedded in the assembly gap and connected to the lower mounting bracket by fasteners.

[0011] In conjunction with the second aspect, in some implementations of the second aspect, the lower mounting bracket includes a first bracket component and a second bracket component. The first bracket component is formed into a cylindrical sleeve by rolling and bending a sheet metal. The sleeve is not completely closed circumferentially and has an opening on one side. The second bracket component is embedded in the opening. The two side edges of the second bracket component are connected to the first bracket component and define a damper mounting hole inside. The lower end of the damper is sleeved in the damper mounting hole. The top end of the second bracket component extends upward along the outer wall surface of the damper and forms a support portion protruding from the top edge of the first bracket component. At least one of the first bracket component and the second bracket component has an outwardly extending first mounting lug and a second mounting lug on both side edges of the opening.

[0012] In conjunction with the second aspect and the above-described implementations, in some implementations of the second aspect, the first support component has outwardly extending first and second flanges on both sides of the opening, the second support component has outwardly extending third and fourth flanges on both sides of the opening, the first flange and the third flange are welded together to form a first mounting lug, the second flange and the fourth flange are welded together to form a second mounting lug, and the support portion has a fifth and a sixth flange on both sides of the support portion, the fifth flange and the third flange are arranged to extend continuously, and the sixth flange and the fourth flange are arranged to extend continuously.

[0013] In combination with the second aspect and the above-described implementations, some implementations of the second aspect include a front suspension lower control arm and a steering knuckle as described in any implementation of the first aspect. The end of the front suspension lower control arm is provided with a control arm ball pin, and the front suspension lower control arm is mounted to the control arm ball pin mounting hole of the steering knuckle through the control arm ball pin.

[0014] In conjunction with the second aspect and the above-described implementations, in some implementations of the second aspect, the front suspension lower control arm includes a control arm body, the control arm body includes an upper control arm plate and a lower control arm plate, the upper control arm plate and the lower control arm plate are pressed together at one end of the control arm body to form a control arm ball pin mounting part, and the control arm ball pin is connected to the control arm ball pin mounting part by fasteners.

[0015] Thirdly, an automobile includes a front suspension system as described in any implementation of the second aspect.

[0016] One of the above technical solutions has at least one of the following advantages or beneficial effects:

[0017] The steering knuckle of this invention features an outwardly recessed cavity at the bearing mounting hole location. By implementing large-area hollowing for weight reduction and employing a concave design, a thin-walled, surrounding structure of a certain depth is formed. A full-circle, slender, encircling reinforcing rib is used, improving strength and durability, achieving a balance between lightweight and performance. Simultaneously, the shock absorber mounting part features a hollow recessed hole, employing a hollow casting structure. This hollow structure significantly reduces weight. This ensures a balance between strength, durability, lightweight, integration, and miniaturization, achieving an optimal solution.

[0018] Additional aspects and advantages of this 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. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the outer structure of an embodiment of the steering knuckle of this utility model;

[0021] Figure 2 This is a schematic diagram of the inner structure of an embodiment of the steering knuckle of this utility model;

[0022] Figure 3 This is a rear view of an embodiment of the steering knuckle of this utility model;

[0023] Figure 4 yes Figure 3 Cross-sectional view at EE;

[0024] Figure 5 This is a schematic diagram of an embodiment of the front suspension system of this utility model;

[0025] Figure 6 This is a schematic diagram of an embodiment of the mounting bracket of this utility model. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0028] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0029] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0030] in, Figure 1 The reference direction coordinate system of this utility model embodiment is given below, in conjunction with Figure 1 The embodiments of this utility model will be described in the directions shown.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4This utility model provides a steering knuckle, including a cast steering knuckle body 100. The steering knuckle body 100 can be made of materials such as aluminum alloy or cast iron. The steering knuckle body 100 has a bearing mounting hole 101 extending from the outside to the back side. The back side of the steering knuckle body 100 has a recessed cavity 102 at the position corresponding to the bearing mounting hole 101. The cavity wall of the cavity 102 forms a surrounding reinforcing rib 103. The top of the steering knuckle body 100 has a damper mounting part 104. The damper mounting part 104 extends upward from the top of the steering knuckle body 100. The damper mounting part 104 has a hollow recessed hole 105 inside. The hollow recessed hole 105 forms a hollow entrance 106 in the cavity wall of the cavity 102. The hollow recessed hole 105 can be directly formed by casting the steering knuckle body 100.

[0032] Combination Figures 1-4 The steering knuckle of this invention features an outwardly recessed cavity 102 at the bearing mounting hole 101. By implementing a large-area hollowing design to reduce weight, and simultaneously employing a concave design, a thin-walled, surrounding structure of a certain depth is formed. A full-circle, slender, encircling reinforcing rib 103 is used, improving strength and durability, achieving a balance between lightweight and performance. Simultaneously, the shock absorber mounting part 104 features a hollow recessed hole 105, employing a hollow casting structure. This hollow structure significantly reduces weight. This ensures a balance between strength, durability, lightweight, integration, and miniaturization, achieving an optimal solution.

[0033] In addition, a concave groove 119 is provided on the outer side of the steering knuckle body 100, and a ring structure around the concave groove 119 is provided to increase strength. On the basis of significant weight reduction, individual stress and key points are reinforced by setting protrusions 120 to strengthen them, prevent stress concentration and thus improve strength and durability.

[0034] In some embodiments, see Figure 1 , Figure 2 , Figure 5 The bottom of the steering knuckle body 100 is provided with a lower control arm mounting part 107, which is used to mount the front suspension lower control arm 200. The lower control arm mounting part 107 is provided with a control arm ball pin mounting hole 108. On the left side of the steering knuckle body 100, there are two caliper mounting seats 109. Each caliper mounting seat 109 is provided with a brake caliper bolt mounting hole 110, allowing the brake caliper to be fixed to the caliper mounting seat 109 of the steering knuckle with bolts. On the right side of the steering knuckle body 100, there is a steering tie rod mounting seat 111, which is provided with a steering tie rod mounting hole 112. The steering tie rod ball pin can pass through the steering tie rod mounting hole 112 and is fastened to the steering knuckle with a nut.

[0035] Further, see Figure 1 , Figure 2 , Figure 5 The steering knuckle body 100 has a wheel speed sensor mounting groove 113 between the shock absorber mounting part 104 and the steering tie rod mounting seat 111. The bottom of the wheel speed sensor mounting groove 113 has wheel speed sensor bolt mounting holes 114. The wheel speed sensor is fixed to the wheel speed sensor mounting groove 113 of the steering knuckle by bolts.

[0036] See Figure 1 , Figure 2 The steering knuckle body 100 has bearing bolt mounting holes 115 on the outer periphery of the bearing mounting hole 101. The bearing mounting hole 101 extends from the outer bearing mounting plane 116 of the steering knuckle body 100 to the bottom of the cavity 102. The bearing assembly is mounted on the outer bearing mounting plane 116 of the steering knuckle and fastened with bolts at the corresponding inner points of the bearing mounting plane. The outer end face of the steering knuckle body 100 has a mounting boss 117, which has brake mudguard bolt mounting holes 118. The brake mudguard is mounted on the outer mounting boss 117 of the steering knuckle with screws.

[0037] In the technical solution of this utility model, the mounting points of suspension mounting components such as bearing assembly, front suspension lower control arm 200, brake caliper, steering tie rod, and brake mudguard are all set on the steering knuckle body 100. One part can support most or all of the rear suspension components, or in other words, the rear suspension is basically installed on the steering knuckle body 100 without the need for additional parts for connection. It has the advantages of high integration, low cost, miniaturization, and high utilization of surrounding space.

[0038] See Figure 5 This utility model also provides a front suspension system, including a shock absorber 300 and a steering knuckle as described in any of the above embodiments. The lower end of the shock absorber 300 is provided with a lower mounting bracket 301. The lower mounting bracket 301 has outwardly extending first mounting lugs 302 and second mounting lugs 303, forming an assembly gap between them. The shock absorber mounting portion 104 is embedded in the assembly gap and connected to the lower mounting bracket 301 by fasteners. The lower mounting bracket 301 and the shock absorber mounting portion 104 can be fastened together by two fasteners. This embodiment reduces the weight of the steering knuckle by implementing large-area hollowing and optimized design (such as hollow cross-section design), ensuring a balance between strength, durability, lightweight, integration, and miniaturization, achieving an optimal solution.

[0039] In some embodiments, see Figure 6The lower mounting bracket 301 includes a first bracket component 304 and a second bracket component 305. The first bracket component 304 is formed into a cylindrical sleeve by rolling and bending a sheet metal. The sleeve is not completely closed circumferentially and has an opening on one side. The second bracket component 305 is made of sheet metal and is embedded in the opening. The two side edges of the second bracket component 305 are connected to the first bracket component 304 and define a shock absorber mounting hole inside. The lower end of the shock absorber 300 is sleeved in the shock absorber mounting hole. The top end of the second bracket component 305 extends upward along the outer wall surface of the shock absorber 300 and forms a support portion 306 protruding from the top edge of the first bracket component 304. At least one of the first bracket component 304 and the second bracket component 305 has a first mounting ear 302 and a second mounting ear 303 extending outward on both side edges of the opening.

[0040] The lower end of the shock absorber 300 is provided with a lower mounting bracket 301 for connection with the steering knuckle. The lower mounting bracket 301 is formed by the interlocking connection of a first bracket component 304 and a second bracket component 305. The first bracket component 304 is formed by rolling and bending a plate to form a cylindrical sleeve, which mainly realizes the sleeve-type fixed installation of the lower mounting bracket 301 at the lower end of the shock absorber 300, ensuring the connection stability between the lower mounting bracket 301 and the shock absorber 300. At the same time, the top of the second bracket component 305 extends upward along the outer wall surface of the shock absorber 300 and forms a support part 306 protruding from the top edge of the first bracket component 304. When the lateral force of the wheel center is transmitted to the lower mounting bracket 301 of the shock absorber 300 through the steering knuckle, the support part 306 protruding from the first bracket component 304 can provide effective support for the shock absorber 300, reduce the bending deformation of the shock absorber 300 at the connection position with the bracket, and thus effectively improve the rigidity of the system.

[0041] Further, see Figure 6 The first support component 304 has outwardly extending first flanges 307 and second flanges 308 on both sides of the opening. The second support component 305 has outwardly extending third flanges 309 and fourth flanges 310 on both sides of the opening. The first flange 307 and the third flange 309 are welded together to form a first mounting lug 302, and the second flange 308 and the fourth flange 310 are welded together to form a second mounting lug 303. The support portion 306 has a fifth flange 311 and a sixth flange 312 on both sides of the opening. The fifth flange 311 and the third flange 309 are continuously extending, and the sixth flange 312 and the fourth flange 310 are continuously extending. In this embodiment, the lower mounting bracket 301 adopts a double-layer plate inlay welding method to improve the strength and rigidity of the first mounting lug 302 and the second mounting lug 303. The support portion 306 enhances its strength and rigidity through the fifth flange 311 and the sixth flange 312, which are curved on both sides, thereby improving the auxiliary support and protection for the vibration damper 300.

[0042] In some embodiments, see Figure 5 The front suspension system also includes a front suspension lower control arm 200, the end of which is provided with a control arm ball pin 202, and the front suspension lower control arm 200 is mounted to the control arm ball pin mounting hole 108 of the steering knuckle through the control arm ball pin 202.

[0043] Among them, see Figure 5 The front suspension lower control arm 200 includes a control arm body, which includes an upper control arm plate and a lower control arm plate. The upper and lower control arm plates are pressed together at one end of the control arm body to form a control arm ball pin mounting portion 201. The control arm ball pin 202 is connected to the control arm ball pin mounting portion 201 by fasteners. In this embodiment, compared with the traditional structure where the lower control arm ball pin 202 is embedded in the control arm body, this embodiment adopts a split structure, which is connected by bolts and nuts. Because of the separate structure, the control arm ball pin 202 seat can be made of cast iron, and the lateral rigidity is increased by 100% compared with the previous sheet metal structure.

[0044] An embodiment of this utility model also provides an automobile, including the front suspension system of any of the above embodiments.

[0045] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A steering knuckle, characterized in that, The steering knuckle body includes a cast steering knuckle body with a bearing mounting hole extending from the outside to the back side. The back side of the steering knuckle body has an outwardly recessed cavity corresponding to the bearing mounting hole. The cavity wall forms a surrounding reinforcing rib. The top of the steering knuckle body has a shock absorber mounting part that extends upward from the top of the steering knuckle body. The shock absorber mounting part has a hollow recessed hole inside, and the hollow recessed hole forms a hollow entrance in the cavity wall.

2. The steering knuckle according to claim 1, characterized in that, The bottom of the steering knuckle body is provided with a lower control arm mounting part, the lower control arm mounting part is provided with a control arm ball pin mounting hole, the left side of the steering knuckle body is provided with a caliper mounting seat, the caliper mounting seat is provided with a brake caliper bolt mounting hole, and the right side of the steering knuckle body is provided with a steering tie rod mounting seat, the steering tie rod mounting seat is provided with a steering tie rod mounting hole.

3. The steering knuckle according to claim 2, characterized in that, The steering knuckle body has a wheel speed sensor mounting groove between the shock absorber mounting part and the steering tie rod mounting seat, and the bottom of the wheel speed sensor mounting groove has a wheel speed sensor bolt mounting hole.

4. The steering knuckle according to claim 1, characterized in that, The steering knuckle body has a bearing bolt mounting hole on the outer periphery of the bearing mounting hole. The bearing mounting hole extends from the outer bearing mounting plane of the steering knuckle body to the bottom of the cavity. The outer end face of the steering knuckle body has a mounting boss, and the mounting boss has a brake mudguard bolt mounting hole.

5. A front suspension system, characterized in that, The device includes a shock absorber and a steering knuckle as described in any one of claims 1 to 4. The lower end of the shock absorber is provided with a lower mounting bracket. The lower mounting bracket is provided with a first mounting lug and a second mounting lug extending outward. An assembly gap is formed between the first mounting lug and the second mounting lug. The shock absorber mounting part is embedded in the assembly gap and is connected to the lower mounting bracket by fasteners.

6. The front suspension system according to claim 5, characterized in that, The lower mounting bracket includes a first bracket component and a second bracket component. The first bracket component is formed into a cylindrical sleeve by rolling and bending a sheet metal. The sleeve is not completely closed circumferentially and has an opening on one side. The second bracket component is embedded in the opening. The two side edges of the second bracket component are connected to the first bracket component and define a shock absorber mounting hole inside. The lower end of the shock absorber is sleeved in the shock absorber mounting hole. The top end of the second bracket component extends upward along the outer wall surface of the shock absorber and forms a support portion protruding from the top edge of the first bracket component. At least one of the first bracket component and the second bracket component has an outwardly extending first mounting lug and a second mounting lug on both side edges of the opening.

7. The front suspension system according to claim 6, characterized in that, The first support component has outwardly extending first and second flanges on both sides of the opening, and the second support component has outwardly extending third and fourth flanges on both sides of the opening. The first flange and the third flange are welded together to form a first mounting lug, and the second flange and the fourth flange are welded together to form a second mounting lug. The support portion has a fifth flange and a sixth flange on both sides of the opening. The fifth flange and the third flange are continuously extending, and the sixth flange and the fourth flange are continuously extending.

8. The front suspension system according to claim 5, characterized in that, The device includes a front suspension lower control arm and a steering knuckle as described in claim 2. The end of the front suspension lower control arm is provided with a control arm ball pin, and the front suspension lower control arm is mounted to the control arm ball pin mounting hole of the steering knuckle through the control arm ball pin.

9. The front suspension system according to claim 8, characterized in that, The front suspension lower control arm includes a control arm body, the control arm body includes an upper control arm plate and a lower control arm plate, the upper control arm plate and the lower control arm plate are pressed together at one end of the control arm body to form a control arm ball pin mounting part, and the control arm ball pin is connected to the control arm ball pin mounting part by fasteners.

10. A car, characterized in that, The front suspension system includes any one of claims 5 to 9.

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