Left steering knuckle arm
By designing the "U"-shaped structure and tilt arm connection of the left steering knuckle arm, the problem of insufficient strength of the steering knuckle arm is solved, and the resistance to torsion and tension is enhanced to ensure the safety and stability of the vehicle steering.
Patent Information
- Application Number
- CN202422359636.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing steering knuckle arms are insufficient when they withstand large torque, which affects the safety of the vehicle's steering.
A left-hand knuckle arm is designed, the height of the connecting shaft head and the mounting hole is not in the same plane, and is connected by the inclined arm and the transition section to form a "U"-shaped structure, increasing torsional tensile strength, and setting grooves on the connecting arm to improve elasticity and installation convenience.
The torsional tensile strength of the left steering joint arm is improved, reducing the risk of damage due to excessive torque, and ensuring the normal steering of the vehicle is operated.
Smart Images
Figure CN223174177U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automotive front axle components, and specifically relates to a left steering knuckle arm. Background Art
[0002] The steering knuckle arm is an important component of the vehicle steering system, and it plays a role in connecting the straight tie rod and the steering knuckle. When the vehicle steers, a steering torque is applied to the steering wheel. This torque is transmitted through the steering shaft, the drive shaft, and the steering gear. After being amplified by the steering gear, the torque is transmitted to the steering rocker arm, then through the steering straight tie rod to the steering knuckle and the steering knuckle arm on the steering knuckle, and finally into the wheel hub to make the wheel steer. As the power of the engine increases, the weight of the engine also increases. The cab and the engine are located at the front of the vehicle, mainly borne by the automotive front axle, so higher strength requirements are imposed on the components on the automotive front axle; when the vehicle steers, the steering knuckle arm has to bear torsion, and the greater the steering angle and the angle during steering and returning, the greater the torsion borne. Therefore, the steering knuckle arm must have sufficient strength to ensure the safety of vehicle driving. Summary of the Utility Model
[0003] In order to solve the problem of high strength requirements for the steering knuckle arm, the utility model provides a left steering knuckle arm with high strength, and the heights of the connecting shaft head and the mounting hole of the left steering knuckle arm are not in the same plane.
[0004] To solve the above technical problems, the utility model includes a connecting shaft head. The connecting shaft head is sequentially connected to a first hole seat and a second hole seat through a connecting arm. A first mounting hole is provided on the first hole seat, and a second mounting hole is provided on the second hole seat. The planar vertical projection of the left steering knuckle arm is in a "U" shape. The connecting shaft head and the second mounting hole are respectively located at the ends of two connecting arms extending outward from the left steering knuckle arm. The first mounting hole is arranged at the corner of the left steering knuckle arm on the same side as the connecting shaft head. Its structural feature is that: the connecting arm between the connecting shaft head and the first mounting hole includes a horizontal connecting section fixedly connected to the connecting shaft head. The horizontal connecting section is connected to one end of a first inclined arm through a transition section. The other end of the first inclined arm is connected to a first horizontal steering transition section. The first hole seat is arranged on the first horizontal steering transition section. The first horizontal steering transition section is connected to a second horizontal steering transition section through a second inclined arm. The second horizontal steering transition section is also connected to a horizontal arm. The second hole seat is arranged at the end of the horizontal arm; the lifting directions of the first inclined arm and the second inclined arm are the same.
[0005] After adopting the above structure, the connecting shaft head of the left steering knuckle arm is connected to the steering knuckle, the first mounting hole is connected to the tie rod, and the second mounting hole is connected to the drag link. The first mounting hole is opened on the first hole seat, and the first hole seat is arranged on the first horizontal steering transition section. The connecting arm between the connecting shaft head and the first mounting hole is composed of a horizontally connecting section, a transition section, a first inclined arm, and a first horizontal steering transition section connected in sequence. The second mounting hole is opened on the second hole seat, and the connecting arm between the first mounting hole and the second mounting hole is composed of a second inclined arm, a second horizontal steering transition section, and a horizontal arm connected in sequence. When connecting the connecting arms in different directions, a transition connection is adopted instead of a straight-line rigid connection, which improves the torsional tensile strength of the left steering knuckle arm, reduces the damage caused by excessive torque during steering operation, and ensures the normal operation of the vehicle during steering. The lifting directions of the first inclined arm and the second inclined arm are the same, that is, the first inclined arm lifts upward, and the second inclined arm also lifts upward, rather than the second inclined arm descending. Therefore, the connecting shaft head and the first mounting hole and the second mounting hole are in planes at different heights. The left steering knuckle arm of the present invention is suitable for the case where the connecting positions of the connecting shaft head and the mounting holes are in different planes.
[0006] The cross-sectional shapes of the horizontally connecting section, the transition section, the first inclined arm, the first horizontal steering transition section, and the second inclined arm are drum-shaped, and the cross-sectional shapes of the second horizontal steering transition section and the horizontal arm are circular.
[0007] Grooves are provided on the arc-shaped inner surfaces of the cross-sections of the horizontally connecting section, the transition section, the first inclined arm, the first horizontal steering transition section, and the second inclined arm along the length direction, and the ends of the multiple grooves are communicated.
[0008] The size of the circular cross-section of the horizontal arm gradually increases in the direction away from the second hole seat.
[0009] The connecting shaft head is composed of a first connecting shaft and a second connecting shaft fixedly connected. The horizontally connecting section is fixedly connected to the second connecting shaft, and at least one connecting shaft hole is opened on the first connecting shaft.
[0010] A keyway is provided on the second connecting shaft.
[0011] Both the first mounting hole and the second mounting hole are tapered holes.
[0012] In the left steering knuckle arm of the present utility model, transitional connections are adopted at the joints of each section, which increases the torsional and tensile strength of the left steering knuckle arm and prevents damage caused by excessive torsion; the cross-sections of the horizontal connection section, the transition section, the first inclined arm, the first horizontal steering transition section, and the second inclined arm are drum-shaped, enabling this section of the connecting arm to have sufficient torsional and tensile strength and a certain amount of elasticity. Its upper and lower surfaces are flat, the two sides are arc-shaped, and a groove is provided on the inner surface, which facilitates gripping and installation operations without affecting the overall strength of the left steering knuckle arm; the cross-sections of the second horizontal steering transition section and the horizontal arm are circular, featuring high strength; the connecting shaft head, the first mounting hole, and the second mounting hole are on planes at different heights, suitable for the situation where the connection positions of the left steering knuckle arm are at different heights. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is the top view of the left steering knuckle arm of the present utility model;
[0014] Figure 2 is Figure 1 the view in the direction of d of
[0015] Figure 3 is Figure 1 the view in the direction of d after the left steering knuckle arm in Figure 1 is flipped 180°, and after flipping 180°
[0016] Figure 4 is Figure 1 the view in the direction of e of
[0017] Figure 5 is Figure 1 the schematic view of the A-A cross-section of
[0018] Figure 6 is Figure 5 the schematic view of the C-C cross-section of
[0019] Figure 7 is Figure 3 the schematic view of the B-B cross-section of
[0020] In the figure: 1. Connecting shaft head; 11. First connecting shaft; 111. Connecting shaft hole; 12. Second connecting shaft; 121. Keyway; 2. Horizontal connection section; 3. Transition section; 4. First inclined arm; 5. First horizontal steering transition section; 6. First mounting hole; 61. First hole seat; 7. Second inclined arm; 8. Second horizontal steering transition section; 9. Horizontal arm; 10. Second mounting hole; 101. Second hole seat; 13. Groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Referring to Figure 1-7 , a left steering knuckle arm, the main structure of which is integrally formed, and its planar vertical projection is in a "U" shape (i.e., Figure 1The shape of the middle top view), including a connecting shaft head 1, a first mounting hole 6, and a second mounting hole 10. The connecting shaft head 1 is sequentially connected to a first hole seat 61 and a second hole seat 101 through a connecting arm. The first mounting hole 6 is opened on the first hole seat 61, and the second mounting hole 10 is opened on the second hole seat 101. The connecting shaft head 1 and the second mounting hole 10 are respectively arranged at the ends of two connecting arms extending outward from the left steering knuckle arm. Here, the ends refer to the endpoints on both sides at the "U"-shaped opening position. The first mounting hole 6 is arranged at the corner of the left steering knuckle arm and is located on the connecting arm on one side of the connecting shaft head 1. The connecting shaft head 1 is connected to the steering knuckle, the first mounting hole 6 is connected to the cross tie rod through a pin shaft, and the second mounting hole 10 is connected to the drag link through a pin shaft, which is a conventional design in the art. The steering knuckle, cross tie rod, and drag link do not belong to the scope of the present invention and are not shown in the figure; combined with Figure 1 , 2 , 4, the plane where the first mounting hole 6 is located is higher than the plane where the connecting shaft head 1 is located, and the plane where the second mounting hole 10 is located is higher than the plane where the first mounting hole 6 is located. Here, the so-called plane where it is located refers to the plane where the upper surfaces of the shaft and the hole are located, and the upper surface refers to Figure 1 the surface seen when looking down. The left steering knuckle arm of the present invention is suitable for the connection positions of the connecting shaft head 1, the first mounting hole 6, and the second mounting hole 10 at different heights. As Figure 1-3 shown, the connecting shaft head 1 is fixedly connected and composed of a first connecting shaft 11 and a second connecting shaft 12. The connecting shaft head 1 can be inserted into the steering knuckle and connected to the steering knuckle. At least one connecting shaft hole 111 is provided on the first connecting shaft 11, usually two perpendicular connecting shaft holes 111 are provided. A nut is installed outside the first connecting shaft 11, and a pin hole is provided on the nut. The pin shaft passes through the pin hole and one of the connecting shaft holes 111 to connect the first connecting shaft 11 and the nut. A keyway 121 is opened on the second connecting shaft 12, and the keyway 121 corresponds to the groove on the steering knuckle. The second connecting shaft 12 is connected to the steering knuckle through a connecting key, which is a conventional setting in the art and will not be described in detail here.
[0022] Referring to Figure 1-7 , the connecting arm between the connecting shaft head 1 and the first mounting hole 6 is a horizontally connecting section 2, a transition section 3, a first inclined arm 4, and a first horizontal steering transition section 5 connected in sequence. Specifically, the horizontally connecting section 2 is connected to the end of the second connecting shaft 12. The transition section 3 serves as a transition for steering and cross-sectional dimensions between the horizontally connecting section 2 and the first inclined arm 4. In the present invention, the cross-section mentioned refers to a plane perpendicular to the length direction of the connecting arm. The first hole seat 61 is arranged on the first horizontal steering transition section 5; the connecting arm between the first mounting hole 6 and the second mounting hole 10 is a second inclined arm 7, a second horizontal steering transition section 8, and a horizontal arm 9 connected in sequence. Specifically, the end of the horizontal arm 9 is connected to the second hole seat 101. As Figure 2As shown, the lifting directions of the first inclined arm 4 and the second inclined arm 7 are the same. The so-called lifting direction refers to the direction represented by the height difference between the two end points of the inclined arm, rather than the specific direction of the inclined arm.
[0023] Referring to Figure 1-3 , 7, the cross-sectional shapes of the horizontal connecting section 2, the transition section 3, the first inclined arm 4, and the first horizontal turning transition section 5 are drum-shaped. The so-called drum-shaped here refers to the cross-sectional shape of the drum. The upper and lower surfaces of the drum are flat, and the side surface is a circular arc protruding outward. The connecting arm with a drum-shaped cross-section has high strength and high torsional and tensile strength, and is convenient for holding and positioning during installation. As Figure 3 shown, grooves 13 are provided on the inner surfaces of the horizontal connecting section 2, the transition section 3, the first inclined arm 4, and the first horizontal turning transition section 5 along the length direction of the connecting arm. The ends of multiple grooves 13 are connected to form a long groove. The so-called inner surface here refers to the side of the left steering knuckle arm close to the connecting arm that forms a U-shaped area. The opening of the groove 13 has little impact on the torsional and tensile strength and overall strength of this section of the connecting arm, and increases the elasticity of this section of the connecting arm. When the left steering knuckle arm is connected to the straight pull rod and the cross pull rod, the connecting arm can undergo a small amount of elastic deformation, which is convenient for installation operation; as Figure 1 shown, the width of the middle part of the vertical projection of the first horizontal turning transition section 5 is greater than the width of the vertical projections of the connecting arms on both sides. This part is subject to greater force. Increasing the width of the first horizontal turning transition section 5 increases the strength of the connecting arm and prevents damage; the cross-sections of the second horizontal turning transition section 8 and the horizontal arm 9 are circular, and the cross-sectional size of the horizontal arm 9 gradually increases along the direction away from the second hole seat 101, that is, the horizontal arm 9 gradually becomes thicker when approaching the second horizontal turning transition section 8, increasing the contact area between the horizontal arm 9 and the second horizontal turning transition section 8, thereby improving the connection strength and preventing damage due to excessive force. As Figure 2 , 3 shown, the first mounting hole 6 and the second mounting hole 10 are both tapered holes. Figure 2 Among them, the diameter of the first mounting hole 6 is smaller at the top and larger at the bottom, and the diameter of the second mounting hole 10 is larger at the top and smaller at the bottom. The large end of the tapered hole facilitates the connecting pin to find and insert into the hole, and the installation is more convenient and fast. Counterbore holes can also be provided at both ends of the tapered hole to avoid interference with the protrusions at the installation position.
[0024] The left steering knuckle arm of the present utility model is provided with three connection positions such as a connection shaft head, a first mounting hole, and a second mounting hole. They are connected in sequence through a connecting arm to form a structure with a "U"-shaped vertical plane projection. The plane heights of the connection shaft head, the first mounting hole, and the second mounting hole are different. Tilted arms are provided on the connecting arm between the connection shaft head and the first mounting hole and on the connecting arm between the first mounting hole and the second mounting hole, and the lifting directions of the two tilted arms are the same, which is suitable for the situation where the connection positions are at different heights. Multiple transition connection segments are provided on the connecting arm, and each section of the left steering knuckle arm is smoothly connected, not easily damaged due to excessive torque, enhancing the overall torsional and tensile strength of the left steering knuckle arm; the cross-sections of the connecting arm between the connection shaft head and the first mounting hole and the second tilted arm are drum-shaped, facilitating gripping and positioning during installation. A groove is provided on the inner surface of this section of the connecting arm, which does not affect the torsional and tensile strength of the left steering knuckle arm and improves the elasticity of this section of the connecting arm, facilitating connection during installation; the cross-section of the connecting arm is drum-shaped or circular, making the overall left steering knuckle arm have high strength.
Claims
1. A left steering knuckle arm, comprising a connecting axle head (1), the connecting axle head (1) is sequentially connected to a first hole seat (61) and a second hole seat (101) through a connecting arm, a first mounting hole (6) is formed in the first hole seat (61), a second mounting hole (10) is formed in the second hole seat (101), the planar vertical projection of the left steering knuckle arm is in a "U" shape, the connecting axle head (1) and the second mounting hole (10) are respectively located at the ends of two connecting arms extending outward from the left steering knuckle arm, and the first mounting hole (6) is arranged at the corner of the left steering knuckle arm on the same side as the connecting axle head (1), and the features are as follows: The connecting arm between the connecting shaft head (1) and the first mounting hole (6) includes a horizontal connecting section (2) fixedly connected to the connecting shaft head (1). The horizontal connecting section (2) is connected to one end of a first inclined arm (4) through a transition section (3). The other end of the first inclined arm (4) is connected to a first horizontal turning transition section (5). The first hole seat (61) is arranged on the first horizontal turning transition section (5). The first horizontal turning transition section (5) is connected to a second horizontal turning transition section (8) through a second inclined arm (7). The second horizontal turning transition section (8) is also connected to a horizontal arm (9). The second hole seat (101) is arranged at the end of the horizontal arm (9). The first inclined arm (4) and the second inclined arm (7) lift in the same direction.
2. The left steering knuckle arm according to claim 1, characterized in that: The cross-sectional shapes of the horizontal connecting section (2), the transition section (3), the first inclined arm (4), the first horizontal turning transition section (5), and the second inclined arm (7) are drum-shaped, and the cross-sectional shapes of the second horizontal turning transition section (8) and the horizontal arm (9) are circular.
3. The left steering knuckle arm according to claim 2, characterized in that: Grooves (13) are provided on the arc-shaped inner surfaces of the cross-sections of the horizontal connecting section (2), the transition section (3), the first inclined arm (4), the first horizontal turning transition section (5), and the second inclined arm (7) along the length direction, and the ends of multiple sections of the grooves (13) are communicated.
4. The left steering knuckle arm according to claim 2, characterized in that: The size of the circular cross-section of the horizontal arm (9) gradually increases in the direction away from the second hole seat (101).
5. The left steering knuckle arm according to claim 1, characterized in that: The connecting shaft head (1) is composed of a first connecting shaft (11) and a second connecting shaft (12) fixedly connected. The horizontal connecting section (2) is fixedly connected to the second connecting shaft (12), and at least one connecting shaft hole (111) is provided on the first connecting shaft (11).
6. The left steering knuckle arm according to claim 5, characterized in that: A keyway (121) is provided on the second connecting shaft (12).
7. The left steering knuckle arm according to claim 1, wherein: Both the first mounting hole (6) and the second mounting hole (10) are tapered holes.