Split type rigid master pin structure applied to independent suspension

Abstract

A split type rigid master pin structure applied to an independent suspension comprises an upper master pin and a lower master pin, the upper master pin is installed on the upper portion of a steering knuckle and used for installing an upper swing arm, and the lower master pin is installed on the lower portion of the steering knuckle and used for installing a lower swing arm. The upper main pin and the lower main pin are connected through a main pin reinforcing plate to form an integral structure after being installed on the steering knuckle. The upper master pin and the lower master pin are connected into an integral structure through the master pin reinforcing plate, so that the rigidity of the upper master pin and the lower master pin is enhanced, and the reliability of the whole system is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive suspensions, and particularly relates to a split rigid kingpin structure applied to independent suspensions. Background Art

[0002] Automotive suspensions are important components to ensure riding comfort. At the same time, as the force transmission parts connecting the vehicle frame and the axle, automotive suspensions are also important components to ensure the driving safety of vehicles. Therefore, automotive suspensions are often listed as important components in the technical specifications of sedans and used as one of the indicators to measure the quality of sedans.

[0003] Currently, there are mainly two structural forms of kingpins applied to independent suspensions. One is the rigid kingpin structure. Generally, the steering knuckle is installed on the airbag arm through a rigid kingpin, and the airbag arm is connected to the upper swing arm and the lower swing arm through two pin shafts. The airbag is installed on the airbag arm. The main defect of this structure is that the position of the kingpin occupies a large amount of space at the wheel end, leaving no space for integrating drive systems such as reducers and motors. The other structure is the virtual kingpin structure. In this structure, ball joints are provided on the upper swing arm and the lower swing arm, and the upper and lower ends of the steering knuckle are respectively connected to the ball joints. The steering knuckle can rotate around the connection line of the upper and lower ball points to achieve steering. At the same time, when the steering knuckle moves up and down, the steering knuckle and the upper and lower swing arms can also move relative to each other. The main defect of this structure is its weak load-bearing capacity. The elastic element can only be arranged on the lower swing arm with a longer length, occupying space and making it impossible to integrate drive systems such as reducers and motors. If the space occupied by the elastic element is vacated, the elastic element can only be arranged on the upper swing arm, then the length of the upper swing arm needs to be made relatively long, affecting the channel width between the two left and right upper swing arms. Therefore, it needs to be improved. Summary of the Invention

[0004] To solve the above problems existing in the current technology, the utility model provides a split rigid kingpin structure applied to independent suspensions that can simultaneously meet the requirements of steering, arrange drive systems such as reducers and motors at the wheel end, facilitate the arrangement of elastic elements, and have a large load-bearing capacity.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A split rigid kingpin structure applied to independent suspensions includes an upper kingpin and a lower kingpin. The upper kingpin is installed on the upper part of the steering knuckle and used for installing the upper swing arm, and the lower kingpin is installed on the lower part of the steering knuckle and used for installing the lower swing arm. After the upper kingpin and the lower kingpin are installed on the steering knuckle, they are connected by a kingpin reinforcement plate to form an integral structure. In the utility model, the upper kingpin and the lower kingpin are connected by a kingpin reinforcement plate to form an integral structure, enhancing the rigidity of the upper kingpin and the lower kingpin and improving the reliability of the entire system.

[0007] Further, the upper kingpin has a horizontally arranged first pin hole for mounting the upper swing arm.

[0008] Further, the upper kingpin has a first kingpin shaft for connecting with the upper pin hole of the steering knuckle, and the first kingpin shaft is vertically arranged with respect to the first pin hole.

[0009] Further, the upper kingpin has a first mounting hole for mounting an elastic element, and the movement locus of the lower end of the elastic element in the YZ plane is consistent with the movement locus of the steering knuckle.

[0010] Further, the upper kingpin has a first mounting surface for connecting with the kingpin reinforcement plate, and a plurality of first connection holes are provided on the first mounting surface.

[0011] Further, the lower kingpin has a horizontally arranged second pin hole for mounting the lower swing arm.

[0012] Further, the lower kingpin has a second kingpin shaft for connecting with the lower pin hole of the steering knuckle, the second kingpin shaft is vertically arranged with respect to the second pin hole, and the lower pin hole is coaxially arranged with the upper pin hole.

[0013] Further, the lower kingpin has a second mounting hole for mounting a shock absorber.

[0014] Further, the lower kingpin has a second mounting surface for connecting with the kingpin reinforcement plate, and a plurality of second connection holes are provided on the second mounting surface.

[0015] Further, kingpin reinforcement plates are provided on both sides of the upper kingpin and the lower kingpin.

[0016] Advantages of the present utility model: It can meet the requirements of steering, wheel side layout of a speed reducer and a drive system such as a motor, the elastic element can be conveniently arranged, and it has a large load-bearing capacity. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the upper kingpin of the present utility model.

[0019] Figure 3 It is a schematic structural diagram of the lower kingpin of the present utility model.

[0020] In the figure: 1. Upper kingpin; 11. First pin hole; 12. First kingpin shaft; 13. First mounting hole; 14. First mounting surface; 15. First connection hole; 2. Lower kingpin; 21. Second pin hole; 22. Second kingpin shaft; 23. Second mounting hole; 24. Second mounting surface; 25. Second connection hole; 3. Steering knuckle; 4. Upper swing arm; 5. Lower swing arm; 6. Kingpin reinforcement plate. Detailed implementation manners

[0021] The present utility model will be further described below in conjunction with specific embodiments, but the present utility model is not limited to these specific implementation manners. Those skilled in the art should recognize that the present utility model covers all alternative solutions, improvement solutions, and equivalent solutions that may be included within the scope of the claims.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are 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 cannot be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "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 "a plurality" is two or more, unless otherwise clearly defined.

[0023] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. shall 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 communication inside 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.

[0024] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0025] See Figures 1 - 3, this embodiment provides a split rigid kingpin structure applied to an independent suspension, including an upper kingpin 1 and a lower kingpin 2. The upper kingpin 1 is installed on the upper part of the steering knuckle 3 and is used to install the upper swing arm 4. The lower kingpin 2 is installed on the lower part of the steering knuckle 3 and is used to install the lower swing arm 5. After the upper kingpin 1 and the lower kingpin 2 are installed on the steering knuckle 3, they are connected by a kingpin reinforcing plate 6 to form an integral structure. The upper kingpin 1 and the lower kingpin 2 of the present utility model are connected by a kingpin reinforcing plate 6 to form an integral structure, enhancing the rigidity of the upper kingpin 1 and the lower kingpin 2 and improving the reliability of the entire system.

[0026] The upper kingpin 1 of this embodiment has a horizontally arranged first pin hole 11 for installing the upper swing arm 3. The upper kingpin 1 has a first kingpin shaft 12 for connecting with the upper pin hole of the steering knuckle 3, and the first kingpin shaft 12 is vertically arranged with respect to the first pin hole 11. The upper kingpin 1 has a first mounting hole 13 for installing an elastic element, and the movement trajectory of the lower end of the elastic element in the YZ plane is consistent with the movement trajectory of the steering knuckle. The upper kingpin 1 has a first mounting surface 14 for connecting with the kingpin reinforcing plate 6, and a number of first connection holes 15 are arranged on the first mounting surface 14. Specifically, the upper kingpin 1 is provided with a cylinder, the first pin hole 11 is opened on the cylinder, the first kingpin shaft 12 is arranged below the cylinder, the first kingpin shaft 12 is a cylindrical section structure, one side of the cylinder is connected with a mounting body, both sides of the mounting body are the first mounting surfaces 14, and the first connection holes 15 are opened on the first mounting surfaces 14. The upper surface of the mounting body is provided with the first mounting hole 13.

[0027] The lower kingpin 2 of this embodiment has a horizontally arranged second pin hole 21 for installing the lower swing arm 5. The lower kingpin 2 has a second kingpin shaft 22 for connecting with the lower pin hole of the steering knuckle 3, the second kingpin shaft 22 is vertically arranged with respect to the second pin hole 21, and the lower pin hole is coaxially arranged with the upper pin hole. The lower kingpin 2 has a second mounting hole 23 for installing a shock absorber. The lower kingpin 2 has a second mounting surface 24 for connecting with the kingpin reinforcing plate 6, and a number of second connection holes 25 are arranged on the second mounting surface 24. Specifically, the upper kingpin 2 is provided with a cylinder, the second pin hole 21 is opened on the cylinder, the second kingpin shaft 22 is arranged in front of the cylinder, the second kingpin shaft 22 is a cylindrical section structure, the rear side of the cylinder is connected with a mounting body, both sides of the mounting body are the second mounting surfaces 24, and the second connection holes 25 are opened on the second mounting surfaces 24. The concave surface of the mounting body is provided with the second mounting hole 23.

[0028] Kingpin reinforcing plates 6 are arranged on both sides of the upper kingpin 1 and the lower kingpin 2 of this embodiment. Specifically, the kingpin reinforcing plate 6 is an L-shaped structure, the short side is fixedly connected with the first mounting surface 14 of the upper kingpin 1, and the end of the long side is fixedly connected with the second mounting surface 24 of the lower kingpin 2.

[0029] When the utility model is in use, the upper kingpin 1 is installed in the upper pin hole of the steering knuckle 3 through a bearing (the bearing can be a rolling bearing, a sliding bearing or no bearing is installed), and the lower kingpin 2 is installed in the lower pin hole of the steering knuckle 3 through a bearing (the bearing can be a rolling bearing, a sliding bearing or no bearing is installed). The upper pin hole and the lower pin hole of the steering knuckle are on the same axis, and the steering knuckle can rotate around the upper kingpin 1 and the lower kingpin 2 to achieve steering. A first pin hole 11 perpendicular to the axis of the kingpin is formed in the upper kingpin 1. The upper swing arm pin shaft is installed in the first pin hole 11 of the upper kingpin 1 through a bearing, and the upper swing arm 4 can rotate around the first pin hole 11 of the upper kingpin 1 after being connected to the upper swing arm pin shaft. A second pin hole 21 perpendicular to the axis of the kingpin is formed in the lower kingpin 2. The lower swing arm pin shaft is installed in the second pin hole 21 of the lower kingpin 2 through a bearing, and the lower swing arm can rotate around the second pin hole 21 of the lower kingpin 2 after being connected to the lower swing arm pin shaft. When the steering knuckle 3 moves up and down, the relative movement with the upper swing arm 4 and the lower swing arm 5 is realized through the pin holes of the upper kingpin 1 and the lower kingpin 2. Connecting holes are formed on the sides of both the upper kingpin 2 and the lower kingpin 3. After the upper kingpin 2 and the lower kingpin 3 are installed on the steering knuckle, the upper kingpin 2 and the lower kingpin 3 are connected by a kingpin reinforcing plate 6 to form a whole, enhancing the rigidity of the upper kingpin 1 and the lower kingpin 2 and improving the reliability of the whole system. A first mounting hole 13 is provided on the upper kingpin 1. This hole can directly install an elastic element or install one or more elastic elements directly or indirectly through an airbag arm or other brackets. The movement track of the lower end of the elastic element in the YZ plane is the same as that of the steering knuckle. When the steering knuckle moves up and down, the elastic element also mainly moves up and down in a translational motion. The second mounting hole 23 on the lower kingpin 2 is used to install a shock absorber.

[0030] The utility model simultaneously meets the requirements of steering, the arrangement of a wheel-side reduction gear, a motor and other drive systems, the convenient arrangement of elastic elements, and a large load-bearing capacity. That is, it can realize the steering function on an independent suspension with a large tonnage; enables the wheel side to have space to inherit drive systems such as a reduction gear and a motor; and increases the channel width between the left and right upper swing arms.

Claims

1. A split rigid kingpin structure applied to an independent suspension, comprising an upper kingpin and a lower kingpin. The upper kingpin is installed on the upper part of the steering knuckle and is used for installing the upper swing arm, and the lower kingpin is installed on the lower part of the steering knuckle and is used for installing the lower swing arm, and is characterized in that: After being installed on the steering knuckle, the upper kingpin and the lower kingpin are connected by a kingpin reinforcement plate to form an integral structure.

2. The split rigid kingpin structure applied to an independent suspension according to claim 1, characterized in that: The upper kingpin has a horizontally arranged first pin hole for installing the upper swing arm.

3. The split rigid kingpin structure applied to an independent suspension according to claim 2, wherein: The upper kingpin has a first kingpin shaft for connecting with the upper pin hole of the steering knuckle, and the first kingpin shaft is vertically arranged with respect to the first pin hole.

4. A split rigid kingpin structure applied to an independent suspension according to claim 3, characterized in that: The upper kingpin has a first mounting hole for installing an elastic element, and the movement trajectory of the lower end of the elastic element in the YZ plane is consistent with the movement trajectory of the steering knuckle.

5. The split rigid kingpin structure applied to an independent suspension according to claim 4, characterized in that: The upper kingpin has a first mounting surface for connecting with the kingpin reinforcement plate, and a number of first connecting holes are provided on the first mounting surface.

6. A split rigid kingpin structure applied to an independent suspension according to any one of claims 1 to 5, characterized in that: The lower kingpin has a horizontally arranged second pin hole for installing the lower swing arm.

7. A split rigid kingpin structure applied to an independent suspension according to claim 6, characterized in that: The lower kingpin has a second kingpin shaft for connecting with the lower pin hole of the steering knuckle, the second kingpin shaft is vertically arranged with respect to the second pin hole, and the lower pin hole is coaxially arranged with the upper pin hole.

8. A split rigid kingpin structure applied to an independent suspension according to claim 7, characterized in that: The lower kingpin has a second mounting hole for installing a shock absorber.

9. The split rigid kingpin structure applied to an independent suspension according to claim 8, characterized in that: The lower kingpin has a second mounting surface for connecting with the kingpin reinforcement plate, and a number of second connecting holes are provided on the second mounting surface.

10. A split rigid kingpin structure applied to an independent suspension according to claim 1, characterized in that: Kingpin reinforcement plates are provided on both sides of the upper kingpin and the lower kingpin.

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