A lower swing arm structure with split knuckle

Abstract

The utility model relates to a lower swing arm structure with split type knuckle, including lower swing arm body, split type knuckle mounting bracket and butt bolt, the lower end middle part of lower swing arm body is provided with the avoidance gap, the both sides of avoidance gap are provided with two downwards protruding mounting column, and the split type knuckle mounting bracket is installed between the lower end of two mounting columns, the both ends of split type knuckle mounting bracket are butted through butt bolt and mounting column, the middle part of split type knuckle mounting bracket is provided with knuckle ball pin mounting hole, and the installation space of ball pin is left between knuckle ball pin mounting hole and avoidance gap. The utility model has the characteristics such as simplifying assembly step, improving production efficiency, reducing unqualified rate, improving product production quality, facilitating product dismounting and the like.

Description

Technical Field

[0001] This utility model relates to the field of lower control arm structure technology, and in particular to a lower control arm structure with a split steering knuckle. Background Technology

[0002] When assembling a traditional single-ball-joint lower control arm steering knuckle, a steel sleeve structure is typically used for press-fitting. The pressing direction is from the "inside" of the steering knuckle to the "outside". During the press-fitting operation, since both structures are rigid, there are certain risks involved in both pressing in and out the steel sleeve, which can easily lead to product damage and also create assembly difficulties, affecting normal production. To solve these problems, the structure needs to be reasonably modified. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a lower control arm structure with a split steering knuckle, which has the characteristics of simplifying assembly steps, improving production efficiency, reducing defect rate, improving product quality, and facilitating product disassembly and assembly.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a lower control arm structure with a split steering knuckle is provided, including a lower control arm body, a split steering knuckle mounting bracket and a connecting bolt. The lower end of the lower control arm body is provided with a clearance notch in the middle. Two downwardly extending mounting posts are provided on both sides of the clearance notch. The split steering knuckle mounting bracket is installed between the lower ends of the two mounting posts. The two ends of the split steering knuckle mounting bracket are connected to the mounting posts by the connecting bolt. The middle of the split steering knuckle mounting bracket is provided with a steering knuckle ball pin mounting hole. There is a ball pin mounting space between the steering knuckle ball pin mounting hole and the clearance notch.

[0005] In the aforementioned technology, the interface of the traditional single ball joint fork arm lower control arm is separated from the bottom to form the lower control arm body and the split steering knuckle mounting bracket. The two are connected by two butt bolts. The separated split structure can be redesigned according to the strength and rigidity requirements. This determines that two through holes slightly larger than the outer diameter of the thread need to be drilled on both sides of the split steering knuckle mounting bracket, and bolt mounting surfaces need to be designed. At the same time, since the split steering knuckle mounting bracket needs to be installed on the lower control arm body with two bolts, it is necessary to control the distance dimensional tolerance and parallelism of the two through holes.

[0006] This technical solution incorporates clearance notches to facilitate the installation of ball joint pins, making it convenient for users to install them. Additionally, two mounting posts facilitate the installation of the split steering knuckle mounting bracket, simplifying the assembly process, avoiding rigid pressing, improving product qualification rates, increasing production efficiency, and facilitating product disassembly and replacement. Furthermore, steering knuckle ball joint mounting holes are provided for convenient ball joint installation.

[0007] As a supplement to this technical solution, the two ends of the split steering knuckle mounting bracket are bent upwards and extend to fit against the lower end of the mounting column. By setting the structure with both ends bent upwards, the overall structural strength of the split steering knuckle mounting bracket is improved.

[0008] As a supplement to this technical solution, the curved part of the split steering knuckle mounting bracket is provided with a reinforcing rib on the side near the steering knuckle ball pin mounting hole. By designing the reinforcing rib, the structural strength of the split steering knuckle mounting bracket is further improved.

[0009] As a supplement to this technical solution, a spherical groove is provided on the upper outer ring of the steering knuckle ball pin mounting hole. By providing the spherical groove, the rotation of the ball pin is facilitated, and wear of the ball pin is avoided.

[0010] As a supplement to this technical solution, the upper end of the lower swing arm body is provided with a curved arm structure that bends forward, and the upper end of the curved arm structure is provided with a docking port. By providing the curved arm structure, it is convenient to use it as a support for docking.

[0011] As a supplement to this technical solution, a central interface is provided in the middle of the swing arm body, which extends through the front and rear end faces, and four mating holes in the same plane are provided on the outer ring of the front end of the central interface.

[0012] As a supplement to this technical solution, a side connecting protrusion is provided on the left side of the middle part of the swing arm body.

[0013] As a supplement to this technical solution, two forward-protruding docking brackets are provided on the lower right side of the lower swing arm body.

[0014] As a supplement to this technical solution, the right side of the middle part of the lower swing arm body is provided with an extension extending to the right, and the extension is provided with a front-protruding docking post.

[0015] Beneficial effects: This utility model relates to a lower control arm structure with a split steering knuckle. By providing a clearance notch, it facilitates the installation of the ball joint pin, making it convenient for users to install the ball joint pin. Simultaneously, by providing two mounting posts, it facilitates the installation of the split steering knuckle mounting bracket, simplifying the assembly steps, avoiding rigid pressing, improving product qualification rate, increasing production efficiency, and facilitating product disassembly and replacement. Furthermore, the addition of a ball joint pin mounting hole facilitates ball joint pin installation. It features simplified assembly steps, improved production efficiency, reduced defect rate, improved product quality, and convenient product disassembly and assembly. Attached Figure Description

[0016] Figure 1 This is the front view of this utility model;

[0017] Figure 2 This is the left view of this utility model;

[0018] Figure 3 This is a structural view of the present invention;

[0019] Figure 4 This is a structural view of the split steering knuckle mounting bracket described in this utility model.

[0020] Illustration: 1. Lower control arm body, 2. Clearance notch, 3. Mounting post, 4. Split steering knuckle mounting bracket, 5. Connecting bolt, 6. Side connecting protrusion, 7. Connecting protrusion, 8. Connecting bracket, 9. Articulated arm structure, 10. Connecting port, 11. Middle connecting interface, 12. Connecting hole, 13. Steering knuckle ball pin mounting hole, 14. Spherical groove, 15. Reinforcing rib, 16. Extension. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0022] The embodiments of this utility model relate to a lower control arm structure with a split steering knuckle, such as... Figure 1 — Figure 4As shown, the assembly includes a lower control arm body 1, a split steering knuckle mounting bracket 4, and connecting bolts 5. The lower control arm body 1 has a clearance notch 2 at its lower center. Two downward-extending mounting posts 3 are provided on both sides of the clearance notch 2. The split steering knuckle mounting bracket 4 is installed between the lower ends of the two mounting posts 3. The two ends of the split steering knuckle mounting bracket 4 are connected to the mounting posts 3 by connecting bolts 5. The middle of the split steering knuckle mounting bracket 4 has a steering knuckle ball pin mounting hole 13. There is space for ball pin installation between the steering knuckle ball pin mounting hole 13 and the clearance notch 2.

[0023] In the above technology, the interface of the traditional single ball joint fork arm lower control arm is separated from the bottom to form the lower control arm body 1 and the split steering knuckle mounting bracket 4. The two are connected by two butt bolts 5. The separated split structure can be redesigned according to the strength and rigidity requirements. The above determines that two through holes slightly larger than the outer diameter of the thread need to be drilled on both sides of the split steering knuckle mounting bracket 4, and bolt mounting surfaces need to be designed. At the same time, since the split steering knuckle mounting bracket 4 needs to be installed on the lower control arm body 1 by two bolts, the distance dimensional tolerance and parallelism of the two through holes need to be controlled.

[0024] In this technical solution, a clearance notch 2 is provided to facilitate the installation of ball joint pins, making it convenient for users to install ball joint pins. At the same time, two mounting posts 3 are provided to facilitate the installation of the split steering knuckle mounting bracket 4, simplifying the assembly steps of both, avoiding rigid pressing, improving the product qualification rate, improving product production efficiency, and facilitating product disassembly and replacement. Additionally, a steering knuckle ball joint mounting hole 13 is provided to facilitate ball joint pin installation.

[0025] As a supplement to this technical solution, the two ends of the split steering knuckle mounting bracket 4 are bent upwards and extend to fit against the lower end of the mounting column 3. By setting the structure with both ends bent upwards, the overall structural strength of the split steering knuckle mounting bracket 4 is improved.

[0026] As a supplement to this technical solution, the curved part of the split steering knuckle mounting bracket 4 is provided with a reinforcing rib 15 on the side near the steering knuckle ball pin mounting hole 13. By designing the reinforcing rib 15, the structural strength of the split steering knuckle mounting bracket 4 is further improved.

[0027] As a supplement to this technical solution, a spherical groove 14 is provided on the upper outer ring of the steering knuckle ball pin mounting hole 13. By providing the spherical groove 14, the rotation of the ball pin is facilitated, and wear of the ball pin is avoided.

[0028] As a supplement to this technical solution, the upper end of the lower swing arm body 1 is provided with a curved arm structure 9 that bends forward, and the upper end of the curved arm structure 9 is provided with a docking port 10. By providing the curved arm structure 9, it is convenient to use it as a support for docking.

[0029] As a supplement to this technical solution, the middle part of the swing arm body 1 is provided with a middle docking interface 11 that runs through the front and rear end faces, and the front outer ring of the middle docking interface 11 is provided with four docking holes 12 in the same plane.

[0030] As a supplement to this technical solution, a side connecting protrusion 6 is provided on the left side of the middle part of the swing arm body 1.

[0031] As a supplement to this technical solution, two forward-protruding docking brackets 8 are provided on the lower right side of the lower swing arm body 1.

[0032] As a supplement to this technical solution, the lower swing arm body 1 has an extension 16 extending to the right on the right side of the middle part, and the extension 16 has a front-protruding docking protrusion 7.

[0033] Example

[0034] A conventional lower control arm steering knuckle is a single unit. Its upper part is a control arm structure used to connect with the internal structure of the vehicle frame, and its lower part is equipped with a ball joint structure to achieve axial rotation. During the assembly of this structure, a steel sleeve needs to be pressed into the control arm structure. The steel sleeve is used to constrain the ball joint so that it can rotate within the steel sleeve. However, pressing the steel sleeve in can easily cause damage, resulting in product defects. At the same time, this structure is difficult to disassemble and assemble, and is not easy to repair or replace.

[0035] In this technical solution, the lower control arm body 1 is provided with two mounting posts 3. The two mounting posts 3 and the split steering knuckle mounting bracket 4 are connected by two connecting bolts 5. The split steering knuckle mounting bracket 4 is provided with a steering knuckle ball pin mounting hole 13. The steering knuckle ball pin mounting hole 13 can install a ball pin that can rotate axially. The ball pin can be connected with the docking position to realize the function of axial rotation.

Claims

1. A lower control arm structure with a split steering knuckle, characterized in that: The system includes a lower control arm body (1), a split steering knuckle mounting bracket (4), and connecting bolts (5). The lower control arm body (1) has a clearance notch (2) at the middle of its lower end. Two downward-extending mounting posts (3) are provided on both sides of the clearance notch (2). The split steering knuckle mounting bracket (4) is installed between the lower ends of the two mounting posts (3). The two ends of the split steering knuckle mounting bracket (4) are connected to the mounting posts (3) by connecting bolts (5). The middle of the split steering knuckle mounting bracket (4) has a steering knuckle ball pin mounting hole (13). There is space for ball pin installation between the steering knuckle ball pin mounting hole (13) and the clearance notch (2).

2. The lower control arm structure with a split steering knuckle according to claim 1, characterized in that: The two ends of the split steering knuckle mounting bracket (4) are bent upwards and extend to fit against the lower end of the mounting column (3).

3. A lower control arm structure with a split steering knuckle according to claim 2, characterized in that: The bent portion of the split steering knuckle mounting bracket (4) is provided with a reinforcing rib (15) on the side near the steering knuckle ball pin mounting hole (13).

4. The lower control arm structure with a split steering knuckle according to claim 1, characterized in that: A spherical groove (14) is provided on the upper outer ring of the steering knuckle ball pin mounting hole (13).

5. A lower control arm structure with a split steering knuckle according to claim 1, characterized in that: The upper end of the lower swing arm body (1) is provided with a curved arm structure (9) that bends forward at the upper end, and the upper end of the curved arm structure (9) is provided with a docking port (10).

6. A lower control arm structure with a split steering knuckle according to claim 1, characterized in that: The swing arm body (1) is provided with a central interface (11) that runs through the front and rear end faces at the middle part, and four docking holes (12) in the same plane are provided at the outer ring of the front end of the central interface (11).

7. A lower control arm structure with a split steering knuckle according to claim 1, characterized in that: The swing arm body (1) is provided with a side connecting protrusion (6) on the left side of the middle part.

8. A lower control arm structure with a split steering knuckle according to claim 1, characterized in that: The lower right side of the lower swing arm body (1) is provided with two forward-protruding docking brackets (8).

9. A lower control arm structure with a split steering knuckle according to claim 1, characterized in that: The lower swing arm body (1) has an extension (16) extending to the right on the right side of the middle part, and the extension (16) has a front-protruding docking protrusion (7).

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