Steering knuckle and vehicle

Abstract

The embodiment of the utility model discloses a steering knuckle and a vehicle, the steering knuckle is integrally cast and formed, a connecting part used for being connected with an upper control arm is formed on the upper portion of the steering knuckle, and a bearing matching hole used for being matched with a hub bearing is formed in the middle of the steering knuckle. A receding hole used for allowing a lower control arm to penetrate through is formed in the lower portion of the steering knuckle. A first weight reduction cavity extending in the circumferential direction of the bearing matching hole and a second weight reduction cavity extending in the circumferential direction of the receding hole are formed in the steering knuckle. According to the steering knuckle, the steering knuckle is integrally formed, the structural strength of the steering knuckle can be guaranteed, the use safety is improved, the first weight reduction cavity is formed in the circumferential direction of the bearing matching hole in an extending mode, the second weight reduction cavity is formed in the circumferential direction of the receding hole in an extending mode, and therefore the overall weight of the steering knuckle can be reduced; the light weight of the vehicle is improved, the endurance performance of the vehicle is improved, the using effect is better, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a steering knuckle and a vehicle with the steering knuckle. Background Art

[0002] With the development of the national economy and the continuous improvement of living standards, vehicles are becoming more and more important in daily travel. The lightweight and endurance performance of vehicles during use are important issues to be considered during vehicle manufacturing. The tires of a vehicle are connected to the steering knuckle through hub bearings. The steering knuckle is one of the key components in the vehicle suspension system. When the vehicle is running, the excitation of the road surface can be transmitted to the steering knuckle through the tires, and then transmitted to various components of the suspension and the vehicle body through the steering knuckle. Existing steering knuckles are mainly manufactured by cast steel or cast iron processes, with relatively large yield and tensile properties, which can better withstand loads and ensure the durability and reliability of vehicle driving. However, they are relatively heavy, which affects the lightweight and endurance performance of the vehicle, and there is room for improvement. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a steering knuckle, which can reduce the overall weight of the steering knuckle while ensuring the structural strength of each part of the steering knuckle, thereby ensuring the use safety, and improving the lightweight and the endurance performance of the vehicle.

[0004] The steering knuckle according to an embodiment of the utility model is integrally cast. A connecting part for connecting with an upper control arm is formed at the upper part of the steering knuckle, a bearing fitting hole for cooperating with a hub bearing is formed in the middle part of the steering knuckle, and an avoidance hole for passing through a lower control arm is formed at the lower part of the steering knuckle; wherein, a first weight reduction cavity extending along the circumferential direction of the bearing fitting hole and a second weight reduction cavity extending along the circumferential direction of the avoidance hole are formed in the steering knuckle.

[0005] For the steering knuckle according to an embodiment of the utility model, by setting the steering knuckle to be integrally formed, the structural strength of the steering knuckle can be ensured, the use safety can be improved, and a first weight reduction cavity is arranged to extend along the circumferential direction of the bearing fitting hole, and a second weight reduction cavity is arranged to extend along the circumferential direction of the avoidance hole, thereby reducing the overall weight of the steering knuckle, improving the lightweight of the vehicle, and improving the endurance performance of the vehicle, with better use effects and a wider application range.

[0006] For the steering knuckle according to some embodiments of the utility model, a middle weight reduction cavity is formed between the bearing fitting hole and the avoidance hole, and the first weight reduction cavity and the second weight reduction cavity communicate with each other at the middle weight reduction cavity.

[0007] For a steering knuckle according to some embodiments of the present utility model, the first weight reduction cavity and the middle weight reduction cavity are formed as a closed annular cavity distributed around the bearing fitting hole.

[0008] For a steering knuckle according to some embodiments of the present utility model, the cross-sectional area of the part of the first weight reduction cavity above the bearing fitting hole is larger than the cross-sectional area of the middle weight reduction cavity.

[0009] For a steering knuckle according to some embodiments of the present utility model, the cross-sectional area of the part of the first weight reduction cavity above the bearing fitting hole is larger than the cross-sectional areas of the parts of the first weight reduction cavity on both sides of the bearing fitting hole in the horizontal direction.

[0010] For a steering knuckle according to some embodiments of the present utility model, the second weight reduction cavity communicates with the middle weight reduction cavity and is distributed along the circumferential direction of the avoidance hole.

[0011] For a steering knuckle according to some embodiments of the present utility model, the second weight reduction cavity is in two parts and is respectively communicated with both ends of the middle weight reduction cavity, and the two parts of the second weight reduction cavity are respectively located on both sides of the avoidance hole in the horizontal direction.

[0012] For a steering knuckle according to some embodiments of the present utility model, the wall thickness of the first weight reduction cavity, the second weight reduction cavity and / or the middle weight reduction cavity is set to L, and it satisfies: L≥5mm;

[0013] And / or, the steering knuckle is provided with a first sand discharge hole communicated with the first weight reduction cavity;

[0014] And / or, the steering knuckle is provided with a second sand discharge hole communicated with the second weight reduction cavity.

[0015] For a steering knuckle according to some embodiments of the present utility model, the steering knuckle is formed with a plurality of anti-friction grooves;

[0016] And / or, the steering knuckle is provided with a first mounting portion for mounting a wheel speed sensor;

[0017] And / or, the steering knuckle is formed with a plurality of bearing mounting holes, and the plurality of bearing mounting holes are spaced apart along the circumferential direction of the bearing fitting hole, and the bearing mounting holes are used for passing through connecting pieces connected to the hub bearing;

[0018] And / or, the steering knuckle is formed with a second mounting portion for mounting a brake disc shield;

[0019] And / or, the steering knuckle is formed with a ball pin mounting hole for mounting a ball pin;

[0020] And / or, the knuckle is provided with a third mounting portion and a fourth mounting portion. The third mounting portion is used for mounting a caliper, and the fourth mounting portion is used for mounting a steering tie rod.

[0021] The present utility model also provides a vehicle.

[0022] The vehicle according to an embodiment of the present utility model includes the knuckle as described in any one of the above.

[0023] The vehicle and the above-described knuckle have the same advantages as compared with the prior art, and will not be elaborated herein.

[0024] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0025] The above and / or additional aspects and advantages of the present utility model will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0026] Figure 1 is a cross-sectional view of a knuckle according to an embodiment of the present utility model Figure 1 ;

[0027] Figure 2 is a cross-sectional view of a knuckle according to an embodiment of the present utility model Figure 2 ;

[0028] Figure 3 is a structural schematic diagram of a knuckle according to an embodiment of the present utility model Figure 1 ;

[0029] Figure 4 is a structural schematic diagram of a knuckle according to an embodiment of the present utility model Figure 2 ;

[0030] Figure 5 is a structural schematic diagram of a knuckle according to an embodiment of the present utility model Figure 3 .

[0031] Reference Signs:

[0032] Knuckle 100,

[0033] Connection portion 1, bearing mating hole 2, relief hole 3, first weight reduction cavity 4, first sand discharge hole 5, second weight reduction cavity 6, second sand discharge hole 7, middle weight reduction cavity 8, antifriction groove 9, drainage groove 10, bearing mounting hole 11, ball pin mounting hole 12, first mounting portion 13, second mounting portion 14, third mounting portion 15, fourth mounting portion 16. Detailed Embodiments

[0034] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0036] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Unless otherwise specified, the front-rear direction in this application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

[0038] Next, refer to Figures 1 - 5 Describe the steering knuckle 100 according to an embodiment of the present utility model, which can reduce the overall weight of the steering knuckle 100 while ensuring the structural strength of various parts of the steering knuckle 100, thereby ensuring the use safety, and improving the lightweight and vehicle endurance performance.

[0039] As Figures 1 - 5As shown, the steering knuckle 100 according to an embodiment of the present utility model is integrally cast. A connecting portion 1 for connecting with an upper control arm is formed at the upper part of the steering knuckle 100. A bearing fitting hole 2 for cooperating with a wheel hub bearing is formed in the middle of the steering knuckle 100. And an avoidance hole 3 for passing through a lower control arm is formed at the lower part of the steering knuckle 100. Among them, a first weight reduction cavity 4 extending circumferentially along the bearing fitting hole 2 and a second weight reduction cavity 6 extending circumferentially along the avoidance hole 3 are formed inside the steering knuckle 100.

[0040] Among them, the steering knuckle 100 is one of the important parts in the vehicle steering axle, which can enable the vehicle to drive stably and transmit the driving direction sensitively. The steering knuckle 100 can transmit and bear the load at the front of the vehicle, support and drive the front wheels to rotate around the kingpin to make the vehicle turn. And when the vehicle is in a driving state, the excitation of the road surface can be transmitted to the steering knuckle 100 through the tires, and then can be transmitted to each component of the suspension and the vehicle body through the steering knuckle 100. Therefore, the steering knuckle 100 needs to bear variable impact loads, and thus the steering knuckle 100 needs to have a relatively high structural strength to ensure the use safety.

[0041] Specifically, the steering knuckle 100 can be set to be integrally cast. Integral casting is a precision investment casting process, which is cast at one time and solidified under high pressure, avoiding any welding or other forms of connection. Thus, the processing times can be reduced, the production cost can be lowered, and the problems such as the low structural strength at the connection part, deformation and fracture at the connection part of the steering knuckle 100 can be avoided. The overall structural strength and durability of the steering knuckle 100 can be improved, and thus the use safety of the steering knuckle 100 can be improved. And the steering knuckle 100 can be made of aluminum material. The aluminum material is light in weight, high in strength, good in plasticity and strong in corrosion resistance, which can improve the lightweight and extend the service life of the steering knuckle 100.

[0042] Furthermore, a connecting portion 1 is formed at the upper part of the steering knuckle 100. The connecting portion 1 is used for connecting with an upper control arm and extends towards the inner side of the vehicle relative to the whole of the steering knuckle 100, which is convenient for the connection between the connecting portion 1 and the upper control arm. And a reinforcing rib can be arranged at the connection between the connecting portion 1 and the steering knuckle 100, which can ensure the structural strength of the connecting portion 1 and the connection reliability. A bearing fitting hole 2 is formed in the middle of the steering knuckle 100. The bearing fitting hole 2 is set as a circular through hole. At least part of the wheel hub bearing can extend into the bearing fitting hole 2 and can be fixed through connecting pieces and the like to connect the wheel hub bearing with the steering knuckle 100. And the other end of the wheel hub bearing can also be connected with the wheel, which can rotatably connect the wheel and the steering shaft, ensuring the running reliability of the wheel and the comfort during the vehicle running.

[0043] In addition, an avoidance hole 3 is provided at the lower part of the knuckle 100, that is, the avoidance hole 3 is provided below the bearing fitting hole 2, and the bearing fitting hole 2 and the avoidance hole 3 are spaced apart in the up and down direction. The avoidance hole 3 can be set as a circle, a rounded rectangle, etc., and a part of the lower control arm can extend into the avoidance hole 3. Furthermore, the lower part of the knuckle 100 can be connected to the lower control arm through a connecting member, etc. The connection method is simple and can ensure the use reliability of the lower control arm.

[0044] The knuckle 100 is further provided with a first weight reduction cavity 4 and a second weight reduction cavity 6. The first weight reduction cavity 4 extends along the circumferential direction of the bearing fitting hole 2, that is, the first weight reduction cavity 4 is provided at the upper part of the knuckle 100. The second weight reduction cavity 6 extends along the circumferential direction of the avoidance hole 3, that is, the second weight reduction cavity 6 is provided at the lower part of the knuckle 100. The first weight reduction cavity 4 and the second weight reduction cavity 6 can be set as a split type, or the first weight reduction cavity 4 and the second weight reduction cavity 6 can be communicated. Moreover, both the first weight reduction cavity 4 and the second weight reduction cavity 6 are cavities formed inside the knuckle 100 when the knuckle 100 is integrally cast.

[0045] Setting both the upper part and the lower part of the knuckle 100 as cavities can reduce the weight of the upper part and the lower part of the knuckle 100, and further can reduce the overall weight of the knuckle 100, improve the lightweight, so as to improve the vehicle endurance performance. Also, it can reduce the materials required for manufacturing the knuckle 100, reduce the setting cost. And setting cavities in both the upper part and the lower part of the knuckle 100 can increase the cross-sectional area of the upper part and the lower part of the knuckle 100 without increasing the weight of the knuckle 100. Furthermore, it can increase the stiffness of the knuckle 100 and improve the vehicle handling performance.

[0046] According to the knuckle 100 of the embodiment of the present utility model, by setting the knuckle 100 as an integral molding, the structural strength of the knuckle 100 can be ensured, the use safety can be improved, and the first weight reduction cavity 4 extends along the circumferential direction of the bearing fitting hole 2, and the second weight reduction cavity 6 extends along the circumferential direction of the avoidance hole 3. Furthermore, the overall weight of the knuckle 100 can be reduced, the vehicle lightweight can be improved, so as to improve the vehicle endurance performance, and the use effect is better and the applicable range is wider.

[0047] In some embodiments, a middle weight reduction cavity 8 is formed between the bearing fitting hole 2 and the avoidance hole 3, and the first weight reduction cavity 4 and the second weight reduction cavity 6 are communicated at the middle weight reduction cavity 8.

[0048] Specifically, as Figures 1 - 2As shown in the figure, the bearing fitting hole 2 is provided at the upper part of the steering knuckle 100, the relief hole 3 is provided at the lower part of the steering knuckle 100, the first weight reduction cavity 4 extends circumferentially along the bearing fitting hole 2, the second weight reduction cavity 6 extends circumferentially along the relief hole 3, and a middle weight reduction cavity 8 is also formed in the middle of the steering knuckle 100. Moreover, the middle weight reduction cavity 8 is also a cavity formed inside the steering knuckle 100 during the integral casting of the steering knuckle 100. The middle weight reduction cavity 8 is formed between the bearing fitting hole 2 and the relief hole 3. Thus, cavities are formed in the upper, middle, and lower parts of the steering knuckle 100, which can reduce the weight of each part of the steering knuckle 100 and improve the overall lightweight of the steering knuckle 100.

[0049] Furthermore, the lower part of the first weight reduction cavity 4 can communicate with the middle weight reduction cavity 8, and the upper part of the second weight reduction cavity 6 can also communicate with the middle weight reduction cavity 8. That is, the middle weight reduction cavity 8 can communicate between the first weight reduction cavity 4 and the second weight reduction cavity 6. The first weight reduction cavity 4, the second weight reduction cavity 6, and the middle weight reduction cavity 8 can all be obtained by setting cores in the steering knuckle 100. After the cavities are formed in the steering knuckle 100, the cores inside the steering knuckle 100 need to be discharged. By setting the first weight reduction cavity 4, the second weight reduction cavity 6, and the middle weight reduction cavity 8 to be connected, only one sand discharge hole can be set, which can improve the integrity of the outer wall of the steering knuckle 100, thereby improving the structural strength of the steering knuckle 100 and ensuring the use reliability of the steering knuckle 100.

[0050] In actual setting, only the lower part of the first weight reduction cavity 4 can be connected to the middle weight reduction cavity 8, or only the upper part of the second weight reduction cavity 6 can be connected to the middle weight reduction cavity 8, or the first weight reduction cavity 4, the second weight reduction cavity 6, and the middle weight reduction cavity 8 can all be set as independent cavities, which improves the setting flexibility and meets different usage requirements.

[0051] In some embodiments, the first weight reduction cavity 4 and the middle weight reduction cavity 8 are formed as a closed annular cavity distributed around the bearing fitting hole 2.

[0052] Specifically, the first weight reduction cavity 4 is provided at the upper part of the steering knuckle 100, the middle weight reduction cavity 8 is provided in the middle, and the lower part of the first weight reduction cavity 4 is connected to the middle weight reduction cavity 8. Thus, the first weight reduction cavity 4 and the middle weight reduction cavity 8 together form a closed annular cavity distributed around the bearing fitting hole 2, which can reduce the mass in the circumferential direction of the bearing fitting hole 2 of the steering knuckle 100 and increase the cross-sectional area in the circumferential direction of the bearing fitting hole 2. Furthermore, the stiffness in the circumferential direction of the bearing fitting hole 2 can be increased. At least part of the hub bearing can extend into the bearing fitting hole 2 and be connected to the bearing fitting hole 2. Improving the stiffness in the circumferential direction of the bearing fitting hole 2 can improve the connection reliability between the bearing fitting hole 2 and the hub bearing, and thus improve the usage safety.

[0053] In some embodiments, the cross-sectional area of the portion of the first weight-reducing cavity 4 above the bearing fitting hole 2 is larger than the cross-sectional area of the middle weight-reducing cavity 8.

[0054] Specifically, the knuckle 100 is provided with a connecting portion 1. The connecting portion 1 is disposed at the upper part of the knuckle 100. The connecting portion 1 is connected to the upper control arm through a connecting member. Moreover, a bearing fitting hole 2 is further provided at the upper part of the knuckle 100. As Figure 1 and 3 shown, the bearing fitting hole 2 is located below the connecting portion 1, and the first weight-reducing cavity 4 extends circumferentially along the bearing fitting hole 2. That is, a part of the first weight-reducing cavity 4 can be disposed between the connecting portion 1 and the bearing fitting hole 2. This part is located above the bearing fitting hole 2. The lower part of the first weight-reducing cavity 4 is communicated with the middle weight-reducing cavity 8.

[0055] And the cross-sectional area of the portion of the first weight-reducing cavity 4 above the bearing fitting hole 2 is set to be larger than the cross-sectional area of the middle weight-reducing cavity 8. The larger the cross-sectional area of the weight-reducing cavity, the greater the stiffness of the knuckle 100 at this position. Setting the cross-sectional area of the portion of the first weight-reducing cavity 4 above the bearing fitting hole 2 to be larger than the cross-sectional area of the middle weight-reducing cavity 8 means that the stiffness of the portion of the knuckle 100 between the bearing fitting hole 2 and the connecting portion 1 is greater than the stiffness of the portion between the bearing fitting hole 2 and the relief hole 3, thereby ensuring the connection reliability between the upper control arm and the connecting portion 1.

[0056] In some embodiments, the cross-sectional area of the portion of the first weight-reducing cavity 4 above the bearing fitting hole 2 is larger than the cross-sectional areas of the portions of the first weight-reducing cavity 4 on both horizontal sides of the bearing fitting hole 2.

[0057] Specifically, as Figure 1 and 3 shown, the bearing fitting hole 2 is located below the connecting portion 1, and a part of the first weight-reducing cavity 4 can be disposed between the connecting portion 1 and the bearing fitting hole 2. This part is located above the bearing fitting hole 2, and the remaining parts of the first weight-reducing cavity 4 can be distributed on both sides of the bearing fitting hole 2. That is, a part of the first weight-reducing cavity 4 can be set to be located on both horizontal sides of the bearing fitting hole 2.

[0058] And the cross-sectional area of the portion of the first weight-reducing cavity 4 above the bearing fitting hole 2 is set to be larger than the cross-sectional areas of the portions of the first weight-reducing cavity 4 on both horizontal sides of the bearing fitting hole 2. The larger the cross-sectional area of the weight-reducing cavity, the greater the stiffness of the knuckle 100 at this position. Setting the cross-sectional area of the portion of the first weight-reducing cavity 4 above the bearing fitting hole 2 to be larger than the cross-sectional areas of the portions of the first weight-reducing cavity 4 on both horizontal sides of the bearing fitting hole 2 means that the stiffness of the portion of the knuckle 100 between the bearing fitting hole 2 and the connecting portion 1 is greater than the stiffness on both sides of the bearing fitting hole 2, thereby ensuring the connection reliability between the upper control arm and the connecting portion 1.

[0059] In some embodiments, the second weight-reducing cavity 6 communicates with the middle weight-reducing cavity 8 and is distributed along the circumferential direction of the avoidance hole 3.

[0060] Specifically, the lower part of the knuckle 100 is provided with a second weight-reducing cavity 6, the middle part is provided with a middle weight-reducing cavity 8, and the upper part of the second weight-reducing cavity 6 is communicated with the middle weight-reducing cavity 8. Thus, the second weight-reducing cavity 6 and the middle weight-reducing cavity 8 together form a cavity distributed along the circumferential direction of the avoidance hole 3, which can reduce the mass in the circumferential direction of the avoidance hole 3 of the knuckle 100, and can increase the cross-sectional area in the circumferential direction of the avoidance hole 3. Furthermore, the stiffness in the circumferential direction of the avoidance hole 3 can be increased, and the avoidance hole 3 is used to connect with the lower control arm. The second weight-reducing cavity 6 can extend to both sides of the connection between the avoidance hole 3 and the lower control arm.

[0061] Furthermore, a part of the lower control arm can extend into the avoidance hole 3. Thus, the lower part of the knuckle 100 can be connected with the lower control arm through a connecting piece or the like. And the second weight-reducing cavity 6 can extend to both sides of the connection between the avoidance hole 3 and the lower control arm, making the connection part between the avoidance hole 3 and the lower control arm a solid structure, that is, the structural strength of the lower part of the avoidance hole 3 is high, which can improve the connection reliability between the lower control arm and the lower part of the knuckle 100 and improve the use safety.

[0062] In some embodiments, the second weight-reducing cavity 6 is in two parts and is respectively communicated with both ends of the middle weight-reducing cavity 8. The two parts of the second weight-reducing cavity 6 are respectively located on both sides of the avoidance hole 3 in the horizontal direction.

[0063] Specifically, the lower part of the knuckle 100 is provided with a second weight-reducing cavity 6. The second weight-reducing cavity 6 extends along the circumferential direction of the avoidance hole 3, and the second weight-reducing cavity 6 can be set in two parts. The two parts of the second weight-reducing cavity 6 are respectively located on both sides of the avoidance hole 3 in the horizontal direction, and the two parts of the second weight-reducing cavity 6 are symmetrically arranged on both sides of the avoidance hole 3, ensuring that the acting forces transmitted on both sides of the avoidance hole 3 are equal. Furthermore, situations such as deformation on one side of the avoidance hole 3 can be avoided, and the service life of the knuckle 100 can be prolonged. And the two parts of the second weight-reducing cavity 6 both extend in the up-down direction, and the middle weight-reducing cavity 8 extends in the horizontal direction, so that the upper ends of the two parts of the second weight-reducing cavity 6 can be communicated with both ends of the middle weight-reducing cavity 8, which can increase the stiffness on both sides and above the avoidance hole 3 and ensure the use reliability.

[0064] In some embodiments, the wall thickness of the first weight-reducing cavity 4, the second weight-reducing cavity 6, and / or the middle weight-reducing cavity 8 is set to L, and it satisfies: L≥5mm; and / or, the knuckle 100 is provided with a first sand-draining hole 5 communicated with the first weight-reducing cavity 4; and / or, the knuckle 100 is provided with a second sand-draining hole 7 communicated with the second weight-reducing cavity 6.

[0065] Specifically, a first weight-reducing cavity 4 extending circumferentially along the bearing fitting hole 2 is provided in the upper part of the knuckle 100, a second weight-reducing cavity 6 extending circumferentially along the avoidance hole 3 is provided in the lower part of the knuckle 100, and a middle weight-reducing cavity 8 is provided between the first weight-reducing cavity 4 and the second weight-reducing cavity 6, thereby reducing the weight of the knuckle 100. The wall thickness of the first weight-reducing cavity 4, the second weight-reducing cavity 6, and / or the middle weight-reducing cavity 8 is set to L, and it satisfies: L≥5 mm, that is, L can be set to 5 mm, 6 mm, 7 mm, etc. Setting the wall thickness of the first weight-reducing cavity 4, the second weight-reducing cavity 6, and / or the middle weight-reducing cavity 8 to satisfy: L≥5 mm can ensure the structural strength of the knuckle 100 while reducing the weight of the knuckle 100, thereby improving the service reliability of the knuckle 100.

[0066] Furthermore, the knuckle 100 may also be provided with a first sand-draining hole 5. The first sand-draining hole 5 may be set to communicate with the first weight-reducing cavity 4. The first sand-draining hole 5 may be provided in multiple numbers, and multiple first sand-draining holes 5 are arranged at intervals. The first weight-reducing cavity 4 can be obtained by arranging a core in the knuckle 100, and after the first weight-reducing cavity 4 is formed, the core can be discharged through the first sand-draining hole 5.

[0067] And the knuckle 100 may also be provided with a second sand-draining hole 7. The second sand-draining hole 7 may be set to communicate with the second weight-reducing cavity 6. The second sand-draining hole 7 may be provided in multiple numbers, and multiple second sand-draining holes 7 are arranged at intervals. The second weight-reducing cavity 6 can be obtained by arranging a core in the knuckle 100, and after the second weight-reducing cavity 6 is formed, the core can be discharged through the second sand-draining hole 7. The middle weight-reducing cavity 8 is set to communicate with the first weight-reducing cavity 4 and the second weight-reducing cavity 6, so that the core in the middle weight-reducing cavity 8 can be discharged through the first sand-draining hole 5 or the second sand-draining hole 7. The setting method is simple, which can ensure the service reliability of the knuckle 100.

[0068] In some embodiments, the knuckle 100 is formed with a plurality of anti-friction grooves 9; and / or, the knuckle 100 is provided with a first mounting portion 13 for mounting a wheel speed sensor; and / or, the knuckle 100 is formed with a plurality of bearing mounting holes 11, and the plurality of bearing mounting holes 11 are circumferentially spaced apart along the bearing fitting hole 2, and the bearing mounting holes 11 are used for passing through a connecting member connected to a hub bearing.

[0069] Specifically, as Figure 5As shown, the steering knuckle 100 is provided with a plurality of anti-friction grooves 9. The plurality of anti-friction grooves 9 are circumferentially spaced apart on the bearing fitting hole 2, and the plurality of anti-friction grooves 9 are arranged on the side of the bearing fitting hole 2 close to the hub bearing. Thus, the contact area between the bearing fitting hole 2 and the hub bearing can be reduced through the anti-friction grooves 9 to extend the service life of the hub bearing. In this embodiment, the anti-friction grooves 9 are provided in three numbers, and the three anti-friction grooves 9 are respectively arranged on both sides and the upper part of the bearing fitting hole 2. The depth of the anti-friction groove 9 is set as H, and H satisfies: 0.9mm ≥ H ≥ 0.7mm, that is, the depth H of the anti-friction groove 9 can be set as 0.9mm, 0.8mm or 0.7mm, etc. In this embodiment, the depth H of the anti-friction groove 9 is set as 0.8mm, which can ensure the reliability of the use of the anti-friction groove 9.

[0070] Further, as Figure 5 shown, a drain groove 10 is further provided below the bearing fitting hole 2. The drain groove 10 is also arranged on the side of the bearing fitting hole 2 close to the hub bearing and extends in the up and down direction, so that the upper end of the drain groove 10 can communicate with the bearing fitting hole 2, and the lower end can communicate with the avoidance hole 3. Thus, the liquid at the connection between the hub bearing and the bearing fitting hole 2 can be discharged through the drain groove 10 to avoid the situation that the hub bearing is corroded, etc., and extend the service life. Moreover, a plurality of bearing mounting holes 11 can be arranged on the circumference of the bearing fitting hole 2. The plurality of bearing mounting holes 11 are circumferentially spaced apart on the bearing fitting hole 2. The bearing mounting holes 11 are used for passing through the connecting pieces connected to the hub bearing to ensure the reliability of the connection between the hub bearing and the bearing fitting hole 2.

[0071] In addition, as Figure 5 shown, the steering knuckle 100 is further provided with a first mounting portion 13. The first mounting portion 13 is integrally formed on one side of the steering knuckle 100 and is recessed inward relative to the outer wall of the steering knuckle 100. The first mounting portion 13 can be used for mounting a wheel speed sensor, and the wheel speed sensor can be used for detecting the wheel speed. Thus, the steering knuckle 100 can provide accurate wheel speed information to the whole vehicle and improve the performance diversification of the steering knuckle 100.

[0072] In some embodiments, the steering knuckle 100 is formed with a second mounting portion 14 for mounting a brake disc cover; and / or, the steering knuckle 100 is formed with a ball pin mounting hole 12 for mounting a ball pin; and / or, the steering knuckle 100 is provided with a third mounting portion 15 and a fourth mounting portion 16. The third mounting portion 15 is used for mounting a caliper, and the fourth mounting portion 16 is used for mounting a steering tie rod.

[0073] Specifically, the steering knuckle 100 is further formed with a second mounting portion 14, as Figure 5As shown, the second mounting portions 14 can be provided in multiple numbers, and the multiple second mounting portions 14 are spaced apart and distributed. Moreover, the multiple second mounting portions 14 can all be configured as mounting holes. The second mounting portion 14 can be used for mounting the brake disc cover, that is, the connecting piece can sequentially pass through the brake disc cover and the second mounting portion 14 to fixedly connect the brake disc cover and the second mounting portion 14. In this embodiment, three second mounting portions 14 are provided, and the connection lines between the three second mounting portions 14 form a triangle, thereby improving the connection reliability between the second mounting portion 14 and the brake disc cover.

[0074] Furthermore, the knuckle 100 can also be formed with ball pin mounting holes 12. Two ball pin mounting holes 12 can be provided. One of the two ball pin mounting holes 12 is provided in the connecting portion 1, and the other ball pin mounting hole 12 is provided below the avoidance hole 3. The ball pin mounting hole 12 is used for mounting the ball pin. The upper control arm and the lower control arm can both be connected to the ball pin, and the ball pin mounting hole 12 is provided with a mating arc surface to increase the contact area between the ball pin mounting hole 12 and the ball pin and ensure the mounting reliability.

[0075] In addition, the knuckle 100 can also be provided with a third mounting portion 15 and a fourth mounting portion 16. The third mounting portion 15 and the fourth mounting portion 16 can both be provided in multiple numbers. In this embodiment, two third mounting portions 15 are provided and one fourth mounting portion 16 is provided. The two third mounting portions 15 are spaced apart in the vertical direction and provided on one side of the knuckle 100. The third mounting portion 15 can be used for mounting the caliper. The fourth mounting portion 16 is provided on the other side of the knuckle 100, and the fourth mounting portion 16 is used for mounting the steering tie rod, thereby ensuring the use reliability of the knuckle 100.

[0076] The present utility model also proposes a vehicle.

[0077] The vehicle according to the embodiment of the present utility model includes the knuckle 100 as described in any one of the above.

[0078] The vehicle according to the embodiment of the present utility model is provided with the knuckle 100. By integrally forming the knuckle 100, the structural strength of the knuckle 100 can be ensured, the use safety can be improved, and a first weight reduction cavity 4 is circumferentially extended along the bearing fitting hole 2, and a second weight reduction cavity 6 is circumferentially extended along the avoidance hole 3. Furthermore, the overall weight of the knuckle 100 can be reduced, the vehicle lightweight can be improved, the vehicle endurance performance can be improved, the use effect is better, and the applicable range is wider.

[0079] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0080] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A steering knuckle, characterized in that: The steering knuckle is integrally cast, a connecting portion for connecting with an upper control arm is formed at the upper portion of the steering knuckle, a bearing matching hole for matching with a wheel hub bearing is formed at the middle portion of the steering knuckle, and a avoidance hole for penetrating a lower control arm is formed at the lower portion of the steering knuckle; Wherein, a first weight-reducing cavity extending along the circumference of the bearing matching hole and a second weight-reducing cavity extending along the circumference of the avoidance hole are formed in the steering knuckle.

2. The steering knuckle according to claim 1, characterized in that: A middle weight-reducing cavity is formed between the bearing matching hole and the avoidance hole, and the first weight-reducing cavity and the second weight-reducing cavity are connected at the middle weight-reducing cavity.

3. The steering knuckle according to claim 2, characterized in that: The first weight-reducing cavity and the middle weight-reducing cavity are formed into closed annular cavities distributed around the bearing matching hole.

4. The steering knuckle according to claim 3, characterized in that: The cross-sectional area of ​​the portion of the first weight-reducing cavity located above the bearing fitting hole is larger than the cross-sectional area of ​​the middle weight-reducing cavity.

5. The steering knuckle according to claim 3, characterized in that: The cross-sectional area of ​​a portion of the first weight-reducing cavity located above the bearing fitting hole is larger than the cross-sectional area of ​​portions of the first weight-reducing cavity located on both sides of the bearing fitting hole in the horizontal direction.

6. The steering knuckle according to claim 2, characterized in that: The second weight-reducing cavity is communicated with the middle weight-reducing cavity and is distributed and extends along the circumference of the avoidance hole.

7. The steering knuckle according to claim 6, characterized in that: The second weight-reducing cavity is divided into two parts and is respectively connected to two ends of the middle weight-reducing cavity. The two parts of the second weight-reducing cavity are respectively located on two sides of the avoidance hole in the horizontal direction.

8. The steering knuckle according to claim 2, characterized in that: The wall thickness of the first weight reduction cavity, the second weight reduction cavity and / or the middle weight reduction cavity is set to L, and satisfies: L≥5mm; and / or, the steering knuckle is provided with a first sand discharge hole communicating with the first weight reduction cavity; And / or, the steering knuckle is provided with a second sand discharge hole communicating with the second weight reduction cavity.

9. The steering knuckle according to any one of claims 1 to 8, characterized in that: The steering knuckle is formed with a plurality of friction reducing grooves; And / or, the steering knuckle is provided with a first mounting portion, and the first mounting portion is used for mounting a wheel speed sensor; And / or, the steering knuckle is formed with a plurality of bearing mounting holes, the plurality of bearing mounting holes are distributed at intervals along the circumference of the bearing matching hole, and the bearing mounting holes are used to penetrate a connecting piece connected to the wheel hub bearing; And / or, the steering knuckle is formed with a second mounting portion, and the second mounting portion is used for mounting a brake disc cover; And / or, the steering knuckle is formed with a ball pin mounting hole, and the ball pin mounting hole is used to mount the ball pin; And / or, the steering knuckle is provided with a third mounting portion and a fourth mounting portion, the third mounting portion is used for mounting a caliper, and the fourth mounting portion is used for mounting a steering rod.

10. A vehicle, characterized in that: The steering knuckle comprises the steering knuckle described in any one of claims 1 to 9.

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