Automobile swing arm

Abstract

The utility model discloses an automobile swing arm which belongs to the field of automobile accessories and comprises a swing arm body, a connecting piece and a lining, a connecting hole is formed in the end face of one end of the swing arm body, a fixing hole is formed in the other end of the swing arm body, the connecting piece comprises a threaded rod and a mounting block, and the threaded rod is arranged in the connecting hole in a penetrating mode through the connecting piece to be in threaded connection with the swing arm body. A mounting hole is formed in the middle of the mounting block, the bush is arranged in the mounting hole and comprises an inner pipe, a middle pipe penetrating through the middle of the inner pipe and an outer pipe penetrating through the middle of the middle pipe, and sealing pieces are arranged at the two ends of the middle pipe. The sealing piece can prevent rainwater and dust from entering gaps at the connecting positions of the inner pipe, the middle pipe and the outer pipe, in addition, when the outer pipe moves relative to the swing arm, the sealing piece can clean the surface of the outer pipe, bush corrosion caused by attachment of the rainwater and the dust is prevented, and the service life of the swing arm is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to an automotive swing arm. Background Technology

[0002] The control arm is an important component of the chassis suspension. It elastically connects the vehicle body and the car to reduce the impact caused by potholes and uneven surfaces while driving, thus ensuring a comfortable ride.

[0003] Chinese utility model patent with publication number "CN222202193U" discloses an adjustable control arm for an automobile suspension system, including a control arm body, a threaded cylinder fixedly connected to the top of the control arm body, a threaded rod threadedly connected to the inside of the threaded cylinder; a first nut threadedly connected to the bottom of the outer wall of the threaded rod, a second nut threadedly connected to the top of the outer wall of the threaded rod, a first washer fixedly connected to the bottom of the first nut, a connecting block fixedly connected to the top of the threaded rod, a mounting bracket fixedly connected to one end of the connecting block, and a screw threadedly connected to the inside of the mounting bracket.

[0004] However, the aforementioned automotive swing arms still have the following drawbacks:

[0005] First, the control arm is installed via a screw at one end. When the car is in motion, rainwater, dust, and other foreign objects will seep into the screw and mounting bracket, corroding them. This will increase friction when the control arm rotates, reducing the suspension system's impact resistance and lowering the driving experience.

[0006] Secondly, the main body of the control arm is relatively heavy, which will affect the response speed of the suspension system. At the same time, when the control arm is subjected to various loads, the stress distribution is not uniform, which can easily lead to stress concentration. Long-term use may cause fatigue cracks in the control arm or its connecting parts, which may lead to damage or breakage of the parts and seriously affect the driving safety of the vehicle.

[0007] Therefore, it is necessary to improve upon the aforementioned shortcomings. Utility Model Content

[0008] The purpose of this invention is to provide a lightweight, high-strength, and easy-to-clean automotive swing arm to solve the above-mentioned problems in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automobile swing arm, including a swing arm body, a connecting member, and a bushing. A connecting hole is provided on one end face of the swing arm body, and a fixing hole is provided on the other end. The connecting member includes a threaded rod and a mounting block. The connecting member threadedly connects the threaded rod to the swing arm body through the connecting hole. The mounting block has a mounting hole in the middle. The bushing is provided in the mounting hole. The bushing includes an inner tube, a middle tube passing through the middle of the inner tube, and an outer tube passing through the middle of the middle tube. Sealing members are provided at both ends of the middle tube.

[0010] By adopting the above technical solution: the external thread on the threaded rod and the internal thread of the connecting hole cooperate to realize the connection between the connector and the main body of the swing arm, ensuring the stability of the connection between the connector and the main body of the swing arm. At the same time, the bushing is set in the mounting hole, and the swing arm is connected to the vehicle suspension system through the bushing in the mounting hole. The inner tube of the bushing abuts against the inner wall of the mounting hole, and the middle tube is clamped by the inner tube and the outer tube. The outer tube can slide relative to the inner tube, providing a certain range of motion for the swing arm to adapt to the steering of the vehicle and the movement of the suspension system. In addition, the end faces of the middle tube are provided with seals. The seals can prevent rainwater and dust from entering the gaps at the connection between the inner tube, the middle tube and the outer tube. When the outer tube moves relative to the swing arm, the seals can clean the surface of the outer tube, preventing the bushing corrosion caused by the adhesion of rainwater and dust, thus improving the service life of the swing arm.

[0011] The aforementioned car swing arm can be further configured such that: several slots are provided on the end faces of both ends of the intermediate tube, and a locking block is provided on one end face of the sealing element to be linked with the slots, and a sealing ring is provided on the other end to cover the inner tube.

[0012] By adopting the above technical solution: the seal covers the inner tube and the intermediate tube with a sealing ring, preventing dust and rainwater from seeping into the gaps of the bushing and extending the service life of the bushing. At the same time, multiple locking blocks set on the end face of the seal cooperate with the locking groove at the end of the intermediate tube to realize the locking of the seal and the intermediate tube, improving the stability of the connection between the seal and the intermediate tube and the ease of installation.

[0013] The aforementioned car swing arm can be further configured such that: the main body of the swing arm is arc-shaped, and a number of spaced-apart weight-reducing grooves are provided in the middle of the main body of the swing arm, and reinforcing grooves are also provided around the weight-reducing grooves of the main body of the swing arm.

[0014] By adopting the above technical solution, the arc-shaped control arm body can better adapt to the changes in the suspension system during vehicle operation, and can also reduce the impact force on the vehicle during operation to a certain extent. The multiple weight-reducing grooves on the control arm, together with the reinforcing grooves set on the periphery, can ensure that the control arm can withstand strong impacts and vibrations, improve the damping capacity of the suspension system, and reduce the overall mass of the control arm, preventing the decrease in handling sensitivity caused by excessive weight of the control arm body.

[0015] The aforementioned car swing arm can be further configured as follows: a threaded rod is fitted with a threaded sleeve, a first nut and a second nut are fitted on the threaded rod, a first washer is provided between the first nut and the second nut, and a second washer is provided on the side of the second nut near the main body of the swing arm.

[0016] By adopting the above technical solution: the threaded rod passes through the threaded sleeve in the connecting hole, and the threaded sleeve and the connecting rod are locked by the first nut. The first washer further strengthens the connection tightness between the threaded rod and the threaded sleeve, preventing the threaded rod and the threaded sleeve from separating. After the threaded rod and the threaded sleeve are locked, the threaded sleeve engages with the internal thread of the connecting hole through the outer circumferential thread. The second nut locks the threaded sleeve, making the connection between the connecting part and the swing arm body more stable. At the same time, the second nut, in conjunction with the second washer, prevents the second nut from scraping the end face of the swing arm body and further improves the locking degree of the second nut, thereby improving the stability of the connecting part.

[0017] The aforementioned car swing arm can be further configured such that: a plurality of connecting grooves are provided at one end of the swing arm body near the connecting hole, one end of the connecting groove is connected to the end face of the swing arm body, and the other end is provided with an arc-shaped surface.

[0018] By adopting the above technical solution, one end of the connecting groove is connected to the end face of the main body of the swing arm, and the arc-shaped surface design of the other end allows the swing arm to better adapt to the shape and movement trajectory of the connecting parts when connected to the suspension system or other components, while reducing stress concentration, thereby enhancing the stability and reliability of the swing arm at the connection point and improving its load-bearing capacity and service life during movement.

[0019] The aforementioned car swing arm can be further configured such that a reinforcing plate is also provided on the outer side wall of the swing arm body.

[0020] By adopting the above technical solution, the reinforcing plate can significantly improve the rigidity of the swing arm body, making it less prone to deformation when subjected to various loads. When the load is applied to the swing arm, the reinforcing plate can distribute the load more evenly to various parts of the swing arm body, avoiding excessive stress in local areas, preventing local deformation or damage to the swing arm during use, ensuring that the entire swing arm is subjected to more balanced forces, improving its overall load-bearing capacity, better adapting to these complex working conditions, and reducing damage caused by load impact under harsh road conditions.

[0021] The beneficial effects of this utility model are as follows:

[0022] First, the control arm body, combined with the connector and bushing, forms a working unit. In traditional automobiles, the control arm is connected to the suspension system through the bushing. During vehicle operation, rainwater or dust can penetrate the connection between the bushing and the suspension system, corroding the bushing and the control arm, and reducing the stability of the connection between the control arm and the suspension system. By attaching seals to both ends of the bushing's central tube, the ends of the bushing can be protected, preventing rainwater and dust from entering the gaps between the bushings. At the same time, when the control arm moves, the surface of the outer tube can be wiped clean, improving the service life of the bushing, thereby improving the stability and effectiveness of the connection between the control arm and the suspension system.

[0023] Secondly, the swing arm body is designed in an arc shape, with reinforcing plates on the sides and several weight-reducing grooves in the middle. This reduces the overall weight of the swing arm while further improving the strength of the swing arm body structure, making it less prone to deformation when subjected to various loads. When a load is applied to the swing arm, the reinforcing plates can distribute the load more evenly to various parts of the swing arm body, avoiding excessive stress in local areas and preventing local deformation or damage during use. This ensures that the entire swing arm is subjected to more balanced forces and improves its overall load-bearing capacity.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the swing arm body structure of this utility model;

[0027] Figure 3 This is a schematic diagram showing the disassembled connection of the present invention;

[0028] Figure 4 This is a schematic diagram showing the bushing of this utility model after disassembly;

[0029] Label annotations: 1. Swing arm body, 11. Connecting hole, 12. Fixing hole, 13. Weight reduction groove, 14. Reinforcing groove, 15. Reinforcing plate, 16. Connecting groove, 2. Connecting piece, 21. Threaded rod, 22. Mounting block, 23. Mounting hole, 24. Threaded sleeve, 25. First nut, 26. Second nut, 27. First washer, 28. Second washer, 31. Bushing, 31. Inner tube, 32. Middle tube, 33. Outer tube, 34. Seal, 35. Slot, 36. Block, 37. Sealing ring. Detailed Implementation

[0030] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] like Figures 1 to 4 The illustrated car swing arm includes a swing arm body 1, a connector 2, and a bushing 3. The swing arm body 1 has a connecting hole 11 on one end face and a fixing hole 12 on the other end. The connector 2 includes a threaded rod 21 and a mounting block 22. The connector 2 threadedly connects the threaded rod 21 to the swing arm body 1 through the connecting hole 11. The mounting block 22 has a mounting hole 23 in the middle. The bushing 3 is disposed in the mounting hole 23. The bushing 3 includes an inner tube 31, a middle tube 32, and an outer tube 33. The middle tube 32 has a groove 35 on both end faces. A sealing element 34 is engaged in the groove 35. The external thread on the threaded rod 21 and the internal thread of the connecting hole 11 cooperate to connect the connector 2 and the swing arm body 1, ensuring the stability of the connection between the connector 2 and the swing arm body 1. At the same time, the bushing 3 is located in the mounting hole 23. The swing arm is connected to the vehicle suspension system through the bushing 3 in the mounting hole 23. The inner tube 31 of the bushing 3 abuts against the inner wall of the mounting hole 23. The intermediate tube 32 is clamped by the inner tube 31 and the outer tube 33. The outer tube 33 can slide relative to the inner tube 31, providing a certain range of motion for the swing arm to adapt to the steering of the vehicle and the movement of the suspension system. Furthermore, the two end faces of the intermediate tube 32 are clamped to the sealing element 34 through the slot 35. The sealing element 34 can prevent rainwater and dust from entering the gap at the connection of the inner tube 31, the intermediate tube 32 and the outer tube 33. In addition, when the outer tube 33 moves relative to the swing arm, the sealing element 34 can clean the surface of the outer tube 33, preventing the bushing 3 from being corroded by rainwater and dust, thus improving the service life of the swing arm.

[0032] Several slots 35 are provided on both ends of the intermediate tube 32. One end of the sealing element 34 is provided with a locking block 36 that is linked to the slots 35, and the other end is provided with a sealing ring 37 for covering the inner tube 31. The sealing element 34 covers the inner tube 31 and the intermediate tube 32 through the sealing ring 37, preventing dust and rainwater from entering the gaps of the bushing 3 and extending the service life of the bushing 3. At the same time, the multiple locking blocks 36 on the end face of the sealing element 34 cooperate with the slots 35 at the end of the intermediate tube 32 to realize the locking of the sealing element 34 and the intermediate tube 32, improving the stability of the connection between the sealing element 34 and the intermediate tube 32 and the convenience of installation.

[0033] The main body 1 of the control arm is arc-shaped, and several spaced-apart weight-reducing grooves 13 are provided in the middle of the main body 1. Reinforcing grooves 14 are also provided around the weight-reducing grooves 13. The arc-shaped control arm body 1 can better adapt to the changes in the suspension system during vehicle operation, and can also reduce the impact force on the vehicle during operation to a certain extent. The multiple weight-reducing grooves 13 on the control arm, together with the reinforcing grooves 14 on the periphery, not only ensure that the control arm can withstand strong impacts and vibrations, improve the damping capacity of the suspension system, but also reduce the overall mass of the control arm, preventing the decrease in handling sensitivity caused by excessive weight of the control arm body 1.

[0034] A threaded rod 21 is fitted with a threaded sleeve 24, and a first nut 25 and a second nut 26 are fitted onto the threaded rod 21. A first washer 27 is provided between the first nut 25 and the second nut 26, and a second washer 28 is provided on the side of the second nut 26 near the swing arm body 1. The threaded rod 21 passes through the threaded sleeve 24 into the connecting hole 11. The threaded sleeve 24 and the connecting rod are locked together by the first nut 25. The first washer 27 further strengthens the connection between the threaded rod 21 and the threaded sleeve 24, preventing them from separating. After the threaded rod 21 and the threaded sleeve 24 are locked together, the threaded sleeve 24 engages with the internal thread of the connecting hole 11 through its outer circumferential thread. The second nut 26 locks the threaded sleeve 24, making the connection between the connecting part 2 and the swing arm body 1 more stable. At the same time, the second nut 26, in conjunction with the second washer 28, prevents the second nut 26 from scraping the end face of the swing arm body 1 and further improves the locking degree of the second nut 26, thus improving the stability of the connecting part 2.

[0035] Several connecting grooves 16 are provided at one end of the swing arm body 1 near the connecting hole 11. One end of the connecting groove 16 is connected to the end face of the swing arm body 1, and the other end has an arc-shaped surface. The design of the arc-shaped surface at the other end of the connecting groove 16, with one end connected to the end face of the swing arm body 1, allows the swing arm to better adapt to the shape and movement trajectory of the connecting parts when connected to the suspension system or other components, while reducing stress concentration. This enhances the stability and reliability of the swing arm at the connection point and improves its load-bearing capacity and service life during operation.

[0036] A reinforcing plate 15 is also provided on the outer side wall of the swing arm body 1. The reinforcing plate 15 can significantly improve the rigidity of the swing arm body 1, making it less prone to deformation when subjected to various loads. When a load is applied to the swing arm, the reinforcing plate 15 can distribute the load more evenly to various parts of the swing arm body 1, avoiding excessive stress in local areas, preventing local deformation or damage to the swing arm during use, ensuring that the force on the entire swing arm is more balanced, improving its overall load-bearing capacity, and enabling it to better adapt to these complex working conditions and reduce damage caused by load impact under harsh road conditions.

Claims

1. A car control arm, comprising a control arm body, a connecting member, and a bushing, characterized in that: The swing arm body has a connecting hole on one end face and a fixing hole on the other end. The connecting component includes a threaded rod and a mounting block. The connecting component passes the threaded rod through the connecting hole and is threadedly connected to the swing arm body. The mounting block has a mounting hole in the middle. The bushing is located in the mounting hole. The bushing includes an inner tube, a middle tube passing through the middle of the inner tube, and an outer tube passing through the middle of the middle tube. The middle tube has sealing elements at both ends.

2. The automotive swing arm according to claim 1, characterized in that: The intermediate tube has several slots on both ends, and the sealing element has a locking block that is linked to the slots on one end and a sealing ring for covering the inner tube on the other end.

3. The automotive swing arm according to claim 2, characterized in that: The main body of the swing arm is arc-shaped, and a number of spaced-apart weight-reducing grooves are provided in the middle of the main body of the swing arm. The main body of the swing arm is also provided with reinforcing grooves around the weight-reducing grooves.

4. The automotive swing arm according to claim 3, characterized in that: The threaded rod is fitted with a threaded sleeve, and the threaded rod is fitted with a first nut and a second nut. A first washer is provided between the first nut and the second nut, and a second washer is provided on the side of the second nut near the swing arm body.

5. The automotive swing arm according to claim 4, characterized in that: The swing arm body has several connecting grooves at one end near the connecting hole. One end of the connecting groove is connected to the end face of the swing arm body, and the other end has an arc-shaped surface.

6. The automotive swing arm according to claim 5, characterized in that: A reinforcing plate is also provided on the outer side wall of the main body of the swing arm.

Images