Hollow thin-wall rear suspension control arm with long service life

Abstract

The utility model relates to the technical field of rear suspension control arms, and discloses a hollow thin-wall rear suspension control arm with long service life, which comprises a suspension mechanical arm, one end of the suspension mechanical arm is fixedly connected with a ball head shell, a ball socket is arranged in the ball head shell, separation strips are fixedly connected in the ball socket at equal intervals, and the separation strips are fixedly connected with the suspension mechanical arm. By means of the arrangement of the whole device, especially the improvement of the ball head, the whole suspension control arm can effectively improve the vehicle control performance, specifically, due to the fact that the original ball head is improved and designed into the mode that the inner-layer ball head, the outer-layer ball head and the buffer layer are combined, the service life is remarkably prolonged, and the service life of the whole suspension control arm is prolonged. Therefore, vibration and abnormal sound in the vehicle driving process are effectively reduced, the vehicle driving stability and smoothness are improved, and more comfortable driving experience is provided for drivers and passengers; in addition, the maintenance cost of the vehicle can be greatly reduced, and the service life of the ball head is effectively prolonged.

Description

A hollow thin-walled rear suspension control arm with long service life Technical Field

[0001] This utility model relates to the field of rear suspension control arm technology, specifically a hollow thin-walled rear suspension control arm with a long service life. Background Technology

[0002] In the rear suspension system of modern automobiles, the rear suspension control arm and ball joint are key components, playing a crucial role in connecting the wheels to the vehicle body and transmitting various forces. Their performance directly affects the vehicle's handling stability, ride comfort, and safety. However, in actual use, these two components face numerous technical challenges, severely impacting their reliability and lifespan, and consequently adversely affecting the overall performance of the vehicle.

[0003] When a vehicle travels on different road conditions, the wheels inevitably experience various vertical forces from the road surface. The rear suspension control arm is connected to the wheel via a ball joint and is responsible for transmitting these vertical forces to the vehicle body structure. However, due to the complex and varied driving environment, such as when driving on uneven roads, speed bumps, or potholes, the wheels will experience strong instantaneous impact forces. These impact forces act directly on the rear suspension control arm through the ball joint. Although existing rear suspension control arms adopt a hollow thin-walled structure design, which can buffer some impact forces to a certain extent using its own elastic deformation, it still has limitations when facing frequent and large impacts. Long-term exposure to high-intensity impacts will cause fatigue damage to the connection between the control arm and the ball joint, resulting in a decrease in the fit precision between the ball joint and the control arm, thus causing the ball joint to loosen.

[0004] Meanwhile, insufficient lubrication is also a common and critical problem. During operation, the ball joint needs to constantly rotate and oscillate relative to each other to adapt to various movement postures of the wheel. If the lubrication system malfunctions or there is insufficient grease, the coefficient of friction between the ball joint and the joint socket will increase significantly. This will not only accelerate wear but also generate a large amount of frictional heat. Excessively high temperatures will further deteriorate lubrication conditions, creating a vicious cycle that accelerates the damage to the ball joint components and ultimately leads to loosening of the ball joint.

[0005] Furthermore, the impact of particulate dust in the vehicle's driving environment on the rear suspension control arms and ball joints cannot be ignored. During daily driving, especially on unpaved roads, near construction sites, or in dusty weather conditions, a large amount of particulate dust can easily penetrate the fit gap between the ball joint and the joint socket, as well as the moving parts of the control arm. This particulate dust acts like an abrasive, constantly grinding the surface of the ball joint and the inner wall of the joint socket during the movement of the ball joint, accelerating the wear of the components, damaging the original fit precision, making the ball joint more prone to loosening, and in severe cases, even causing the ball joint to seize up, completely losing its normal connection and movement function, posing a great threat to the vehicle's driving safety.

[0006] In summary, the existing rear suspension control arm and ball joint connection structure lacks effective countermeasures against impacts, insufficient lubrication, and the intrusion of particulate matter, leading to frequent ball joint loosening failures and severely impacting vehicle performance and safety. Therefore, an innovative technical solution is urgently needed to address these issues, improve the reliability and durability of the rear suspension control arm and ball joint connection structure, and ensure safe and stable vehicle operation under various conditions.

[0007] Therefore, we proposed a hollow thin-walled rear suspension control arm with a long service life to solve the above problems. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this utility model provides a hollow thin-walled rear suspension control arm with a long service life, thereby solving the problems mentioned in the background art.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, this utility model provides the following technical solution: a hollow thin-walled rear suspension control arm with a long service life, comprising a suspension mechanical arm, one end of which is fixedly connected to a ball head shell, a ball socket is provided inside the ball head shell, and partition strips are fixedly connected at equal intervals inside the ball socket, and an oil storage groove is provided inside the ball head shell.

[0012] Preferably, the ball socket is connected to an outer ball head, and the outer ball head is fixedly connected with hexagonal through holes at equal intervals.

[0013] Preferably, a buffer layer is movably connected to the inner cavity of the outer ball head, an arc-shaped oil channel is formed on the buffer layer, and oil storage tanks are formed at equal intervals on the arc surface of the buffer layer.

[0014] Preferably, a first support plate and a second support plate are fixedly connected inside the oil storage tank, and the first support plate and the second support plate are symmetrically arranged.

[0015] Preferably, a stress relief component is slidably connected inside the oil storage tank. The stress relief component is held by a first support plate and a second support plate, and the stress relief component has a communicating oil passage.

[0016] Preferably, the inner ball of the buffer layer is connected to an inner ball head, the upper end of the inner ball head is fixedly connected to a cap, and the middle of the upper surface of the inner ball head is fixedly connected to an outer connecting rod.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a hollow thin-walled rear suspension control arm with a long service life, which has the following beneficial effects:

[0019] 1. This utility model improves the overall suspension control arm by setting up the overall device, especially by improving the ball joint, which can effectively improve the vehicle handling performance. Specifically, thanks to the improvement of the original single ball joint design into a combination of inner and outer ball joints and a buffer layer, the service life is significantly improved, thereby effectively reducing vibration and abnormal noise during vehicle operation, improving the stability and smoothness of vehicle operation, and providing a more comfortable driving experience for drivers and passengers.

[0020] In addition, it can significantly reduce vehicle maintenance costs. Because the service life of the ball joint is effectively extended, the frequency of repair or replacement due to ball joint damage is significantly reduced. This not only saves a lot of repair time and costs, but also reduces the time the vehicle is downtime due to repairs, improves vehicle utilization efficiency, greatly reduces the long-term use cost of the vehicle, and effectively extends the service life of components associated with the ball joint, further reducing the overall maintenance cost of the vehicle and the frequency of parts replacement.

[0021] 2. This utility model improves the performance and reliability of the suspension robotic arm by adding a separator strip in the ball joint housing. It optimizes the lubrication mechanism and ensures stable operation. Specifically, the added separator strip effectively solves the problem of uneven lubricant distribution within the ball socket, ensuring sufficient and uniform lubrication in all contact areas between the outer and inner ball joints during operation. This not only reduces the coefficient of friction between the outer ball joint and the ball socket, reducing wear, but also makes the outer ball joint more smoothly and efficiently transmits vertical forces from the wheel. For example, during frequent vehicle starts and stops, and when driving on bumpy roads, stable lubrication allows the ball joint to maintain good working performance, avoiding problems such as jamming and accelerated wear due to insufficient lubrication. This significantly enhances the reliability of the entire rear suspension system, reduces the probability of malfunctions, and improves vehicle driving safety.

[0022] Strengthening structural strength and extending service life: Equidistantly distributed separators act as reinforcing ribs, significantly improving the structural strength of the ball joint and the entire ball-end connection device. When the vehicle is subjected to impact forces from the road surface, such as when passing over large potholes or speed bumps, these separators effectively disperse and bear the stress, preventing deformation or damage to the ball joint, thus protecting the connection stability between the ball joint and the suspension arm. Compared with traditional ball joint devices, this patented technology can withstand greater impact forces and alternating loads, significantly extending the fatigue life of the device. This effectively reduces the frequency of parts replacement, lowers vehicle maintenance costs and downtime, and improves vehicle efficiency and economic benefits. Attached Figure Description

[0023] Figure 1 is an appearance view of this utility model;

[0024] Figure 2 is a cross-sectional view of the ball head shell and hexagonal through hole in this utility model;

[0025] Figure 3 is a structural diagram of the ball head shell, ball socket, separator strip, and oil storage tank in this utility model;

[0026] Figure 4 is a three-dimensional schematic diagram of the spherical head shell after sectional cutting in this utility model;

[0027] Figure 5 is a cross-sectional side view of the ball head shell in this utility model;

[0028] Figure 6 is a structural diagram of the buffer layer and arc-shaped oil passage in this utility model;

[0029] Figure 7 is a partial enlarged view of the structure at point A in Figure 6 of this utility model;

[0030] Figure 8 is a structural disassembly diagram of this utility model.

[0031] In the picture:

[0032] 1. Suspended robotic arm; 2. Ball head shell; 3. Ball socket; 4. Separator; 5. Oil reservoir; 6. Outer ball head; 7. Hexagonal through hole; 8. Buffer layer; 9. Arc-shaped oil passage; 10. Oil reservoir; 11. First support plate; 12. Second support plate; 13. Stress relief component; 14. Oil passage hole; 15. Inner ball head; 16. Cap; 17. Outer connecting rod. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0035] Example

[0036] Please refer to Figures 1 through 8:

[0037] A long-life hollow thin-walled rear suspension control arm includes a suspension mechanical arm 1. A ball joint housing 2 is fixedly connected to one end of the suspension mechanical arm 1. A ball joint housing 3 is formed inside the ball joint housing 2. Dividing strips 4 are fixedly connected at equal intervals inside the ball joint housing 3. An oil reservoir 5 is formed inside the ball joint housing 2. An outer ball joint 6 is ball-connected inside the ball joint housing 3. Hexagonal through holes 7 are fixedly connected at equal intervals on the outer ball joint 6. A buffer layer 8 is movably connected inside the outer ball joint 6. An arc-shaped oil passage 9 is formed on the buffer layer 8. Oil reservoirs 10 are formed at equal intervals on the arc surface of the buffer layer 8. The oil storage tank 10 is fixedly connected with a first support plate 11 and a second support plate 12, which are symmetrically arranged. The oil storage tank 10 is slidably connected with a stress relief component 13, which is held by the first support plate 11 and the second support plate 12. The stress relief component 13 has a communicating oil passage hole 14. The buffer layer 8 is connected to an inner ball head 15, and a cap 16 is fixedly connected to the upper end of the inner ball head 15. An outer connecting rod 17 is fixedly connected to the middle of the upper surface of the inner ball head 15.

[0038] in:

[0039] The outer ball head 6 is made of a wear-resistant and self-lubricating alloy metal, which can be implemented as a steel alloy.

[0040] The hexagonal through hole 7 is used to connect the ball socket 3 and the outer ball head 6 with the contact surface of the buffer layer 8, so as to facilitate the flow of lubricating oil.

[0041] The buffer layer 8 is made of a high-temperature resistant, high-strength material and can be implemented as rubber or polyurethane.

[0042] The arc-shaped oil passage 9 runs through and connects the oil storage tank 10, and transverse passages are opened at both ends of the arc-shaped oil passage 9 for the flow of lubricating oil.

[0043] The outer ball head 6 is connected to the arc-shaped oil passage 9 and the oil reservoir 10 on the contact surface of the buffer layer 8, which facilitates the flow of lubricating oil.

[0044] The first support piece 11 and the second support piece 12 are made of high-temperature resistant and high-strength materials and can be made of rubber.

[0045] The oil passage 14 is used to connect the outer ball head 6 with the mating surface of the buffer layer 8 and the mating surface of the buffer layer 8 with the inner ball head 15.

[0046] The inner ball head 15 can be made of high-strength alloy steel.

[0047] The cap 16 is used to prevent lubricating oil from leaking between components.

[0048] External connecting rod 17 is used to connect other parts on the vehicle.

[0049] Working principle:

[0050] In the initial state:

[0051] Lubricating oil is provided between adjacent partition bars 4 and in the oil storage tank 5. The stress relief component 13 is not impacted and moves into the oil storage tank 10.

[0052] When in use, when the vehicle is driving on the road, the wheels will be subjected to vertical force from the road surface; the suspended robotic arm 1 is connected to the wheel through the ball joint, and the vertical force is transmitted to the suspended robotic arm 1. Since the suspended robotic arm 1 is a hollow thin-walled structure, it can use its own elastic deformation to buffer part of the impact force while transmitting the force.

[0053] During the above process, the lubricating oil in the ball socket 3 will enter the contact surface between the hexagonal through hole 7 on the outer ball head 6 and the buffer layer 8 through the oil storage tank 10 opened on the buffer layer 8, and then enter the contact surface between the buffer layer 8 and the inner ball head 15, thereby achieving lubrication between the outer ball head 6, the buffer layer 8, and the inner ball head 15, effectively avoiding the phenomenon of obstructed movement due to insufficient lubrication.

[0054] Furthermore, the lubricating oil can also enter the oil storage tank 10 through the arc-shaped oil channel 9, thereby providing sliding support for the stress relief component 13 in the oil storage tank 10. The oil passage 14 opened on the stress relief component 13 ensures that there is lubricating oil between the contact surfaces of the buffer layer 8 and the buffer layer 1. Furthermore, when the inner ball head 15 is subjected to a large impact, it will transmit the force to the stress relief component 13 in the oil storage tank 10. At this time, the first support plate 11 and the second support plate 12 that are stuck in the stress relief component 13 will deform. Through the above actions, the force can be relieved, thereby improving the overall service life of the device.

[0055] Furthermore, by improving the overall device, especially the ball joint, the overall suspension control arm can be improved to effectively enhance vehicle handling performance. Specifically, thanks to the design of the original single ball joint into a combination of inner and outer ball joints and a buffer layer, the service life is significantly improved, thereby effectively reducing vibration and abnormal noise during vehicle operation, improving vehicle stability and smoothness, and providing a more comfortable driving experience for passengers.

[0056] In addition, it can significantly reduce vehicle maintenance costs. Because the service life of the ball joint is effectively extended, the frequency of repair or replacement due to ball joint damage is significantly reduced. This not only saves a lot of repair time and costs, but also reduces the time the vehicle is downtime due to repairs, improves vehicle utilization efficiency, greatly reduces the long-term use cost of the vehicle, and effectively extends the service life of components associated with the ball joint, further reducing the overall maintenance cost of the vehicle and the frequency of parts replacement.

[0057] Furthermore, the addition of the separator 4 in the ball joint housing 2 enhances the performance and reliability of the suspension manipulator 1. Optimizing the lubrication mechanism ensures stable operation. Specifically, the added separator 4 effectively solves the problem of uneven lubricant distribution within the ball socket 3, ensuring sufficient and uniform lubrication in all contact areas between the outer ball joint 6 and the inner ball joint 15 during operation. This not only reduces the coefficient of friction between the outer ball joint 6 and the ball socket 3, reducing wear, but also makes the outer ball joint 6 more smoothly and efficiently transmit vertical forces from the wheels. For example, during frequent vehicle starts, braking, and driving on bumpy roads, stable lubrication allows the ball joint to maintain good working performance, avoiding problems such as jamming and accelerated wear due to insufficient lubrication. This significantly enhances the reliability of the entire rear suspension system, reduces the probability of malfunctions, and improves vehicle driving safety.

[0058] Strengthening structural strength and extending service life: The equidistantly distributed separator strips 4 act as reinforcing ribs, greatly improving the structural strength of the ball joint 3 and the entire ball joint connection device. When the vehicle is subjected to impact forces from the road surface, such as when passing over large potholes or speed bumps, these separator strips 4 can effectively disperse and bear the stress, preventing the ball joint 3 from deforming or being damaged, thereby protecting the connection stability between the ball joint 3 and the suspension robotic arm 1. Compared with traditional ball joint devices, this patented technology can withstand greater impact forces and alternating loads, significantly extending the fatigue life of the device, effectively reducing the frequency of parts replacement, lowering vehicle maintenance costs and downtime, and improving vehicle utilization efficiency and economic benefits.

[0059] Please refer to Figures 1 to 8 for the above work process.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hollow thin-walled rear suspension control arm with a long service life, comprising a suspension robotic arm (1), characterized in that: One end of the suspended robotic arm (1) is fixedly connected to a ball head shell (2), a ball socket (3) is provided inside the ball head shell (2), and partition strips (4) are fixedly connected at equal intervals inside the ball socket (3). An oil storage tank (5) is provided inside the ball head shell (2).

2. The hollow thin-walled rear suspension control arm with long service life according to claim 1, characterized in that: The ball socket (3) is connected to an outer ball head (6), and the outer ball head (6) is fixedly connected with hexagonal through holes (7) at equal intervals.

3. The long service life hollow thin-walled rear suspension control arm according to claim 2, characterized in that: A buffer layer (8) is movably connected in the inner cavity of the outer ball head (6). An arc-shaped oil channel (9) is provided on the buffer layer (8), and oil storage tanks (10) are provided at equal intervals on the arc surface of the buffer layer (8).

4. The long service life hollow thin-walled rear suspension control arm according to claim 3, characterized in that: The oil storage tank (10) is fixedly connected with a first support plate (11) and a second support plate (12), which are symmetrically arranged.

5. The long service life hollow thin-walled rear suspension control arm according to claim 4, characterized in that: The oil storage tank (10) is slidably connected to a stress relief component (13), which is held by a first support plate (11) and a second support plate (12). The stress relief component (13) has a communicating oil passage hole (14).

6. A hollow thin-walled rear suspension control arm with a long service life according to claim 3, characterized in that: The inner ball joint of the buffer layer (8) is connected to an inner ball head (15), and a cap (16) is fixedly connected to the upper end of the inner ball head (15). An outer connecting rod (17) is fixedly connected to the middle of the upper surface of the inner ball head (15).

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