Integrated low-pressure casting hollow steering knuckle

Abstract

The utility model relates to an integrated low-pressure casting hollow steering knuckle which comprises a steering knuckle body, the rear side of the steering knuckle body is concaved inwards to form a groove-shaped hollow area, a first protruding part is arranged at the upper right corner of the rear side of the steering knuckle body in a protruding mode, a second protruding part is arranged at the lower left corner of the rear side of the steering knuckle body in a protruding mode, and a third protruding part is arranged at the lower right corner of the rear side of the steering knuckle body in a protruding mode. And a half shaft avoiding hole penetrating through the middle part is formed in the middle part. Firstly, the hollow steering knuckle is arranged to be a hollow component, so that the overall mass of the device is greatly reduced, meanwhile, in the manufacturing process, a plurality of positioning holes are formed, the device can be better positioned in the die casting process conveniently, the overall precision of the component after die casting is improved, and the unsprung mass and the total weight of a vehicle are reduced advantageously; the response speed and stability of the suspension system of the vehicle are improved, and the driving comfort and controllability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow steering knuckles, in particular to an integrated low-pressure cast hollow steering knuckle. Background Art

[0002] The current market demand for steering knuckle parts is constantly developing, and higher requirements are put forward for improving vehicle performance and reducing energy consumption. In this market background, hollow steering knuckle technology came into being.

[0003] The hollow steering knuckle is an innovative design that aims to improve the vehicle's handling performance and battery life by reducing part weight, optimizing structural design and material selection. Compared with traditional solid structures, the hollow steering knuckle reduces the overall weight of the part by reducing the amount of material used. This design not only helps to reduce the vehicle's unsprung mass and total weight, improve fuel efficiency and cruising range, but also improve the vehicle's suspension system response speed and stability, and enhance driving comfort and handling.

[0004] When manufacturing hollow steering knuckles, advanced processing technology and material technology are needed. By using advanced casting, forging or forming processes, precise manufacturing of complex structures can be achieved to ensure the strength, rigidity and durability of parts. At the same time, selecting high-strength and lightweight materials, such as aluminum alloy, can further reduce the weight of parts and improve overall performance.

[0005] The development of hollow steering knuckle technology will provide automakers with more choices and flexibility, enabling them to design lighter and more energy-efficient vehicles to meet the growing market demand. At the same time, the application of this technology will also drive the entire automotive industry towards a more environmentally friendly and sustainable direction. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a hollow steering knuckle which can improve the overall structural performance of the device on the basis of reducing the weight of parts.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an integrated low-pressure cast hollow steering knuckle, comprising a steering knuckle body, the rear side of the steering knuckle body is recessed inward to form a groove-shaped hollow area, a first protrusion is protruding from the upper right corner of the rear side of the steering knuckle body, a second protrusion is protruding from the lower left corner of the rear side, a third protrusion is protruding from the lower right corner, and a half-axle avoidance hole is provided in the middle part that passes through it front and back, the first protrusion is provided with a first swing arm bushing press-fitting hole connected to the swing arm, the second protrusion is provided with a second swing arm bushing press-fitting hole connected to the swing arm, the first protrusion is provided with a first core positioning hole at one side of the first swing arm bushing press-fitting hole, the first protrusion is provided with a second core positioning hole connected to the first core positioning hole on the opposite side of the first protrusion, a square weight-reducing sand leakage hole is provided on the right side of the third protrusion, the first core positioning hole, the second core positioning hole and the square weight-reducing sand leakage hole are all provided with annular bosses correspondingly arranged along their circumferences on the outside, and waist-shaped core positioning holes are respectively provided on the left and right sides of the steering knuckle body.

[0008] The beneficial effects of the utility model are as follows: firstly, the hollow steering knuckle is set as a hollow component, thereby greatly reducing the overall mass of the device; at the same time, during the manufacturing process, a plurality of positioning holes are set to facilitate better positioning of the device during the die-casting process, so as to improve the overall accuracy of the component after die-casting, help to reduce the unsprung mass and total weight of the vehicle, improve the response speed and stability of the vehicle's suspension system, and enhance driving comfort and handling.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, a plurality of wheel hub bearing mounting holes connected to the wheel hub are provided on the front side of the steering knuckle body along the circumference of the half-shaft avoidance hole.

[0011] The above technical solution provides a half-axle avoidance hole so that the half-axle can be set in the steering knuckle of the internal center console and normally cooperate with the half-axle in the car.

[0012] Furthermore, the hub bearing mounting hole is provided with a plurality of reinforcing ribs along its circumference.

[0013] The above technical solution improves the structural strength of the wheel hub bearing mounting hole by arranging a plurality of reinforcing ribs along the circumference of the wheel hub bearing mounting hole.

[0014] Furthermore, a plurality of machined threaded holes are provided on the front side of the steering knuckle body, and the axes of the machined threaded holes are perpendicular to the installation plane where the wheel hub bearing installation holes are located.

[0015] The above technical solution can ensure the dustproof ability of the device by setting a plurality of machine-threaded holes, installing the dust cover in the machine-threaded holes, and fixing them with screws.

[0016] Furthermore, the third protrusion is provided with a shock absorber mounting hole extending in the front-to-back direction, and the shock absorber mounting hole is connected to the shock absorber.

[0017] The above technical solution achieves a shock absorbing effect by assembling the shock absorber mounting hole on the steering knuckle body and enabling it to be correspondingly connected to the shaft of the shock absorber inside the car.

[0018] Furthermore, the third protrusion is further provided with a tie-foot adjustment rod mounting hole extending in the left-right direction below the shock absorber mounting hole.

[0019] The above technical solution provides a foot restraint adjustment rod mounting hole, so that the device can still be connected to the external foot restraint adjustment rod through the foot restraint adjustment rod mounting hole while reducing the overall weight.

[0020] Furthermore, the openings of the first swing arm bushing press-fitting hole and the second swing arm bushing press-fitting hole are both rounded and chamfered structures.

[0021] The above technical solution chamfers the openings of the first swing arm bushing press-fitting hole and the second swing arm bushing press-fitting hole, so that the press-fitting work is more convenient when the first swing arm bushing is assembled and docked with the swing arm inside the car.

[0022] Furthermore, a plurality of push rod bosses are provided on the surface of the steering knuckle body.

[0023] The above technical solution designs a plurality of ejector bosses on the surface of the steering knuckle body, so that after the initial die-casting, the device can use the ejector to support the ejector bosses, thereby facilitating rapid demoulding of the entire component.

[0024] Furthermore, two mutually parallel ear structures are provided above the steering knuckle body, and a transverse control arm mounting hole connected to the control arm is provided on the ear structure.

[0025] The above technical solution provides an ear piece structure and connects the ear piece structure to an external control arm, so that the steering can be controlled by the external control arm while reducing the weight.

[0026] Furthermore, a wheel speed sensor mounting hole connected to the rotation speed sensor is provided on the right side of the steering knuckle body.

[0027] The above technical solution is achieved by providing a rotation speed sensor mounting hole, and connecting the steering knuckle body to the input shaft of the sensor through the rotation speed sensor mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the front structure in an embodiment of the utility model;

[0029] Figure 2It is a schematic diagram of the side structure in an embodiment of the utility model;

[0030] Figure 3 It is a schematic diagram of the back structure in an embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the side structure in an embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure in an embodiment of the utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Wheel hub bearing mounting hole; 2. Brake caliper mounting hole; 3. Machined threaded hole; 4. Push rod boss; 5. Square weight-reducing sand leakage hole; 6. Ear structure; 7. Second swing arm bushing press-fit hole; 8. Toe adjustment rod mounting hole; 9. Shock absorber mounting hole; 10. Waist-shaped core locating hole; 11. Wheel speed sensor mounting hole; 12. First swing arm bushing press-fit hole; 13. First core locating hole; 14. Second core locating hole; 15. Reinforcement ribs. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] Example

[0037] like Figure 1-5 As shown, an integrated low-pressure cast hollow steering knuckle comprises a steering knuckle body, the rear side of the steering knuckle body is recessed inward to form a groove-shaped hollow area, a first protrusion is protruding from the upper right corner of the rear side of the steering knuckle body, a second protrusion is protruding from the lower left corner of the rear side, a third protrusion is protruding from the lower right corner, a half-axle avoidance hole 17 is provided in the middle part and passes through it front and back, the first protrusion is provided with a first swing arm bushing press-fitting hole 12 connected to the swing arm, and the second protrusion is provided with a second swing arm bushing press-fitting hole 7 connected to the swing arm The first protrusion is provided with a first core positioning hole 13 on one side of the first swing arm bushing press-fitting hole 12, and the first protrusion is provided with a second core positioning hole 14 connected with the first core positioning hole 13 on the opposite side thereof, and a square weight-reducing sand leakage hole 5 is provided on the right side of the third protrusion, and the first core positioning hole 13, the second core positioning hole 14 and the square weight-reducing sand leakage hole 5 are all provided with annular bosses correspondingly arranged along their circumferences outside, and waist-shaped core positioning holes 10 are respectively provided on the left and right sides of the steering knuckle body.

[0038] The diameter of the first core positioning hole 13 is smaller than the diameter of the second core positioning hole 14 .

[0039] Wherein, a brake caliper mounting hole 2 connected to the brake caliper is provided on the left side of the steering knuckle body.

[0040] The steering knuckle body is an integrally formed component formed by low-pressure casting.

[0041] Among them, the wall thickness of the steering knuckle body is 4mm. By reducing the sudden change in wall thickness, it is beneficial to reduce the risk of internal defects in the casting and enhance the mechanical properties of the body.

[0042] The working principle is as follows: the aluminum ingot is melted into liquid aluminum, and then the liquid aluminum is injected into the mold by low-pressure casting technology. Under the positioning action of the first core positioning hole 13 and the second core positioning hole 14 inside the mold, the basic shape is formed, and the center of gravity of the component is guaranteed to be non-offset, and the wall thickness is guaranteed to be uniform. During the injection process, a sand core is used to create a cavity structure inside the steering knuckle. The sand core is manufactured by the cold core box method. At room temperature, the sand core is quickly hardened in the core box by blowing triethylamine gas. After the casting is taken out, it is immediately hammered and sanded. The sand core remaining in the casting is taken out by hammering and vibrating for about 100 seconds. Subsequently, the flash, burrs and pouring risers of the cast aluminum casting are post-processed using a trimmer, a sawing machine, a cutting machine and a grinding station, and then T6 heat treatment is performed. Quenching and aging treatment are performed in a heat treatment furnace to improve the hardness and strength of the casting. Next, the holes and threads are precisely processed using a CNC machine tool.

[0043] The above technical solution can first set the hollow steering knuckle as a hollow component, thereby greatly reducing the overall mass of the device. At the same time, during the manufacturing process, multiple positioning holes are set to facilitate better positioning of the device during the die-casting process, so as to improve the overall accuracy of the component after die-casting, help reduce the unsprung mass and total weight of the vehicle, improve the response speed and stability of the vehicle's suspension system, and enhance driving comfort and handling.

[0044] Preferably, a plurality of hub bearing mounting holes 1 connected to the wheel hub are provided on the front side of the steering knuckle body along the circumference of the half-shaft avoidance hole 17 .

[0045] The working principle is: by setting the half-axle avoidance hole 17 and connecting it with the external standard part, the steering knuckle body can be connected with the normal standard part and perform its corresponding function.

[0046] The above technical solution provides the half-axle avoidance hole 17 so that the half-axle can be arranged in the internally hollow steering knuckle and normally cooperate with the half-axle in the automobile.

[0047] Preferably, the hub bearing mounting hole 1 is provided with a plurality of reinforcing ribs 15 along its circumference.

[0048] The working principle is as follows: by arranging a plurality of reinforcing ribs 15 outside the hub bearing mounting hole 1, the overall structural strength of the hub bearing mounting hole 1 is improved, thereby avoiding the possibility of cracking.

[0049] The above technical solution provides a plurality of reinforcing ribs 15 along the circumference of the wheel hub bearing mounting hole 1 to improve the structural strength of the wheel hub bearing mounting hole 1.

[0050] Preferably, a plurality of machined threaded holes 3 are provided on the front side of the steering knuckle body, and the axes of the machined threaded holes 3 are perpendicular to the installation plane where the wheel hub bearing installation hole 1 is located.

[0051] The working principle is: a machined threaded hole 3 is provided and connected and fixed to a standard wiring harness clip of a car.

[0052] The above technical solution can ensure that the device can function normally by setting a plurality of machine-added threaded holes and installing the standard wiring harness clips of the automobile in the machine-added threaded holes.

[0053] Preferably, a shock absorber mounting hole 9 extending in the front-rear direction is provided on the third protrusion, and the shock absorber mounting hole 9 is connected to the shock absorber.

[0054] The working principle is as follows: by providing the shock absorber mounting hole 9 and connecting and fixing it with the shock absorber, the device can be linked with the shock absorber after being assembled inside the car.

[0055] The above technical solution achieves a shock absorbing effect by assembling the shock absorber mounting hole 9 on the steering knuckle body and enabling it to be correspondingly connected to the shaft of the shock absorber inside the automobile.

[0056] Preferably, the third protrusion is further provided with a tie-foot adjustment rod mounting hole 8 extending in the left-right direction below the shock absorber mounting hole 9 .

[0057] The above technical solution provides the foot restraint adjustment rod mounting hole 8, so that the device can still be connected to the external foot restraint adjustment rod through the foot restraint adjustment rod mounting hole 8 while reducing the overall weight.

[0058] Preferably, the openings of the first swing arm bushing press-fitting hole 7 and the second swing arm bushing press-fitting hole 12 are both rounded and chamfered structures.

[0059] The working principle is: by setting the openings of the first swing arm bushing press-fitting hole 7 and the second swing arm bushing press-fitting hole 12 as chamfered structures, it can be more convenient and quick to press-fit with the external swing arm.

[0060] The above technical solution chamfers the openings of the first swing arm bushing press-fitting hole 7 and the second swing arm bushing press-fitting hole 12, so that the press-fitting work can be more conveniently performed when the first swing arm bushing is assembled and docked with the swing arm inside the car.

[0061] Preferably, a plurality of ejector bosses 4 are further provided on the surface of the steering knuckle body, so that the ejector can act on the ejector bosses 4 and eject the entire device from the mold after die-casting.

[0062] The working principle is: by setting a plurality of ejector bosses 4, and using the ejector to resist the ejector bosses 4, when the initial die-casting is completed and demoulding is required, the ejector can resist the ejector bosses 4, so that the device can be quickly demoulded in the mold.

[0063] The above technical solution designs a plurality of ejector bosses 4 on the surface of the steering knuckle body, so that after the initial die-casting, the device can use the ejector to support the ejector bosses 4, thereby facilitating rapid demoulding of the entire component.

[0064] Preferably, two mutually parallel ear structures 6 are further provided above the steering knuckle body, and a transverse control arm mounting hole connected to the control arm is provided on the ear structure 6.

[0065] The working principle is: by providing the ear piece structure 6 and connecting the ear piece structure 6 with the control arm, the device can be normally linked with the external control arm.

[0066] The above technical solution provides the ear structure 6 and connects the ear structure 6 to the external control arm, so that the steering can be controlled by the external control arm while reducing the weight.

[0067] Preferably, a wheel speed sensor mounting hole 11 connected to the rotation speed sensor is provided on the right side of the steering knuckle body.

[0068] The above technical solution is provided with a rotation speed sensor mounting hole 11, and the steering knuckle body is connected to the input shaft of the sensor through the rotation speed sensor mounting hole 11.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An integrated low-pressure cast hollow steering knuckle, characterized in that: The invention comprises a steering knuckle body, wherein the rear side of the steering knuckle body is inwardly recessed to form a groove-shaped hollow area, a first protrusion is protrudingly provided at the upper right corner of the rear side of the steering knuckle body, a second protrusion is protrudingly provided at the lower left corner of the rear side of the steering knuckle body, a third protrusion is protrudingly provided at the lower right corner, a half-axle avoidance hole (17) is provided in the middle part and passes through the half-axle avoidance hole (17) front and back, the first protrusion is provided with a first swing arm bushing press-fitting hole (12) connected to the swing arm, the second protrusion is provided with a second swing arm bushing press-fitting hole (7) connected to the swing arm, the first protrusion is provided with a first swing arm bushing press-fitting hole (12) connected to the swing arm, the first ...7) connected to the swing arm, the first protrusion is provided with a second swing arm bushing press-fitting hole (17) connected to the swing arm, the first protrusion is provided with a second swing arm bushing press-fitting hole (17 A first core positioning hole (13) is provided on one side of the press-fitting hole (12); a second core positioning hole (14) connected to the first core positioning hole (13) is provided on the first protrusion on the opposite side; a square weight-reducing sand leakage hole (5) is provided on the right side of the third protrusion; the first core positioning hole (13), the second core positioning hole (14) and the square weight-reducing sand leakage hole (5) are all provided with annular bosses correspondingly arranged along their circumferences on their exteriors; waist-shaped core positioning holes (10) are respectively provided on the left and right sides of the steering knuckle body.

2. The integrated low-pressure cast hollow steering knuckle according to claim 1, characterized in that: A plurality of wheel hub bearing mounting holes (1) connected to the wheel hub are arranged on the front side of the steering knuckle body along the circumference of the half-shaft avoidance hole (17).

3. The integrated low-pressure cast hollow steering knuckle according to claim 2, characterized in that: The hub bearing mounting hole (1) is provided with a plurality of reinforcing ribs (15) along its circumference.

4. The integrated low-pressure cast hollow steering knuckle according to claim 2, characterized in that: A plurality of machined threaded holes (3) are provided on the front side of the steering knuckle body, and the axes of the machined threaded holes (3) are perpendicular to the installation plane where the wheel hub bearing installation holes (1) are located.

5. The integrated low-pressure cast hollow steering knuckle according to claim 1, characterized in that: The third protrusion is provided with a shock absorber mounting hole (9) extending in the front-rear direction, and the shock absorber mounting hole (9) is connected to the shock absorber.

6. The integrated low-pressure cast hollow steering knuckle according to claim 1, characterized in that: The third protrusion is also provided with a foot-binding adjustment rod mounting hole (8) extending in the left-right direction below the shock absorber mounting hole (9).

7. The integrated low-pressure cast hollow steering knuckle according to claim 1, characterized in that: The openings of the first swing arm bushing press-fitting hole (12) and the second swing arm bushing press-fitting hole (7) are both rounded and chamfered structures.

8. The integrated low-pressure cast hollow steering knuckle according to claim 1, characterized in that: A plurality of push rod bosses (4) are also provided on the surface of the steering knuckle body.

9. The integrated low-pressure cast hollow steering knuckle according to claim 1, characterized in that: Two mutually parallel ear structures (6) are also arranged above the steering knuckle body, and a transverse control arm mounting hole connected to the control arm is arranged on the ear structure (6).

10. An integrated low-pressure cast hollow steering knuckle according to any one of claims 1 to 9, characterized in that: A wheel speed sensor mounting hole (11) connected to the rotation speed sensor is provided on the right side of the steering knuckle body.

Images