A long-life, low-maintenance control arm

Abstract

The utility model provides a control arm of long service life and easy maintenance, mainly solves the problem of bad grease lubrication effect of the current control arm, and influences the service life, characterized by: further including pressing plate (31), being located in the ball shell and being sealedly matched with the inner wall of ball shell, the pressing plate is correspondingly arranged on one side of the ball head, oil injection pipe (32) one end extends out the ball shell and is equipped with check valve (321), the other end passes through the pressing plate and is arranged opposite to the ball head, elastic member (33) one end is contacted with the inner wall of ball shell, the other end is contacted with the pressing plate and pushes the pressing plate to the ball head, the utility model provides a control arm of long service life and easy maintenance, has the effect of realizing concentrated grease with the pressing plate of elastic member push, and the lubrication effect is better.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a control arm with a long lifespan and easy maintenance. Background Technology

[0002] During vehicle operation, the control arm is an important component of the vehicle's suspension system, typically used to connect the wheels to other parts of the vehicle body (such as the frame or chassis). Its main function is to control the movement trajectory of the wheels, ensuring the stability and comfort of the vehicle while driving.

[0003] The ball joints of control arms are usually lubricated with grease. However, current greases do not have a pushing structure, so the grease cannot be concentrated on the ball joint, resulting in poor lubrication and affecting service life. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a control arm with a long service life and easy maintenance, mainly solving the problem of poor ball joint lubrication in current control arms, which affects their service life.

[0005] The technical solution of this utility model is as follows: A long-life, easy-to-maintain control arm includes an arm body and a half-shaft. A spherical shell is mounted on the arm body, and a ball seat is provided inside the spherical shell. A ball head is provided on the half-shaft extending into the spherical shell, and the ball head mates with the ball seat. The control arm also includes... A pressure plate is disposed inside the spherical shell and is sealed to the inner wall of the spherical shell. The pressure plate is disposed on one side of the spherical head. The oil injection pipe has one end extending out of the ball shell and equipped with a one-way valve, and the other end passing through the pressure plate and positioned opposite the ball head. The elastic element has one end in contact with the inner wall of the spherical shell and the other end in contact with the pressure plate, pushing the pressure plate toward the spherical head.

[0006] The elastic element is a spring.

[0007] The spring is sleeved on the outside of the oil injection pipe.

[0008] The arm is equipped with a detachable buffer block.

[0009] The buffer block includes a base plate and an integrally vulcanized colloid on the base plate. A screw is provided on the base plate, and a nut is installed on the screw through the arm body.

[0010] The colloid contains a skeleton made of metal.

[0011] The arm body is provided with a mounting sleeve and also includes a connecting shaft. One end of the connecting shaft is located inside the mounting sleeve, and the mounting sleeve is provided with an oil injection nozzle.

[0012] The ball seat is manufactured using powder metallurgy.

[0013] The beneficial effects of this utility model are: This utility model provides a control arm with a long service life and easy maintenance, which has a pressure plate pushed by an elastic element to realize the function of concentrating grease, resulting in better lubrication. Attached Figure Description

[0014] Figure 1 This is a side view of one embodiment of the present invention.

[0015] Figure 2 This is an exploded view of one embodiment of the present invention.

[0016] Figure 3 for Figure 2 Enlarged diagram of point A in the middle. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. A high-lifespan and easy-to-maintain control arm includes an arm body 1 and a half-shaft 2. A spherical shell 3 is mounted on the arm body, and a ball seat 30 is provided inside the spherical shell. A ball head 31 is provided on the half-shaft extending into the spherical shell, and the ball head cooperates with the ball seat. A pressure plate 38 is also included, located inside the spherical shell and sealed to the inner wall of the spherical shell. The pressure plate is located on one side of the ball head. An oil injection pipe 32 extends out of the spherical shell at one end and is equipped with a one-way valve 321, and the other end passes through the pressure plate and is positioned opposite the ball head. An elastic element 33 has one end in contact with the inner wall of the spherical shell and the other end in contact with the pressure plate, pushing the pressure plate towards the ball head. To prevent the grease in the grease reservoir from failing to lubricate the ball seat, a pressure plate is designed, in conjunction with a spring, to inject the grease in the grease reservoir into the groove of the ball pin, thereby maintaining continuous lubrication between the ball pin and the ball seat. One-way valves can be nozzles, etc., which is a conventional technology. A through hole 301 can be opened on the ball seat to facilitate the direct addition of grease to the ball head. When the grease decreases, the pressure plate is pushed by the spring to concentrate the grease to the ball head. A guide hole can be opened on the pressure plate for the oil injection pipe to pass through.

[0018] In this embodiment, as shown in the figure, the elastic element is a spring.

[0019] In this embodiment, as shown in the figure, the spring is sleeved on the outside of the oil injection pipe.

[0020] In this embodiment, as shown in the figure, the boom is equipped with a detachably connected buffer block 4. Real-world vehicle models often travel on bumpy roads after loading cargo, causing excessive compression of the shock absorbers, which in turn leads to direct impact between the buffer block and the vehicle frame. The buffer block is therefore a vulnerable component. However, welding can only be achieved by replacing the entire control boom. A replaceable buffer block offers advantages such as economy and ease of replacement and maintenance.

[0021] In this embodiment, as shown in the figure, the buffer block includes a base plate 41 and an integrally vulcanized gel 42 on the base plate. A screw 43 is provided on the base plate, and a nut 44 is installed on the screw through the arm body. The arm body has mounting holes, and the screw can be fixed by the nut after passing through.

[0022] In this embodiment, as shown in the figure, a metal skeleton 45 is provided within the colloid. Because the buffer block has a short lifespan, this has been optimized by adding a skeleton to enhance its impact resistance.

[0023] In this embodiment, as shown in the figure, the arm body is provided with a mounting sleeve 5 and a connecting shaft 51. One end of the connecting shaft is located inside the mounting sleeve, and the mounting sleeve is provided with an grease nipple 52. By injecting grease through the grease nipples on both sides, problems such as inconsistent friction coefficients leading to inconsistent tension, stick-slip, stress corrosion cracking, fretting abrasion, sticking, and seizing can be avoided.

[0024] In this embodiment, as shown in the figure, the ball seat is manufactured using powder metallurgy. Powder-metallurgical ball seats offer superior friction, impact resistance, and fatigue resistance. During vehicle operation, especially in the steering and suspension systems, the increased friction provides better position holding capability, ensuring the vehicle maintains its intended trajectory under various road conditions, enhancing handling precision and stability. This also means that in extreme driving situations such as emergency braking or sharp turns, the vehicle reacts more quickly and reliably, significantly improving driving safety. Furthermore, the improved impact and fatigue resistance further extends the ball seat's service life. This directly and effectively addresses the failure issues of traditional ball seats.

[0025] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A long-life, easy-to-maintain control arm, comprising an arm body (1) and a half-shaft (2), wherein a spherical shell (3) is mounted on the arm body, and a ball seat (30) is provided inside the spherical shell; a ball head (31) is provided on the half-shaft extending into the spherical shell, and the ball head cooperates with the ball seat, characterized in that: Also includes A pressure plate (38) is disposed inside the spherical shell and is sealed to the inner wall of the spherical shell. The pressure plate is disposed on one side of the spherical head. The oil injection pipe (32) has one end extending out of the ball shell and equipped with a one-way valve (321), and the other end passing through the pressure plate and being positioned opposite the ball head. The elastic element (33) has one end in contact with the inner wall of the spherical shell and the other end in contact with the pressure plate and pushes the pressure plate toward the spherical head.

2. The long-life, easy-to-maintain control arm according to claim 1, characterized in that: The elastic element is a spring.

3. A long-life, easy-to-maintain control arm according to claim 2, characterized in that: The spring is sleeved on the outside of the oil injection pipe.

4. A long-life, easy-to-maintain control arm according to claim 1, characterized in that: The arm body is equipped with a detachable buffer block (4).

5. A long-life, easy-to-maintain control arm according to claim 4, characterized in that: The buffer block includes a base plate (41) and an integrally vulcanized colloid (42) on the base plate. A screw (43) is provided on the base plate, and a nut (44) is installed on the screw through the arm body.

6. A long-life, easy-to-maintain control arm according to claim 5, characterized in that: The colloid contains a skeleton (45) made of metal.

7. A long-life, easy-to-maintain control arm according to claim 1, characterized in that: The arm body is provided with an installation sleeve (5) and also includes a connecting shaft (51). One end of the connecting shaft is located inside the installation sleeve, and the installation sleeve is provided with an oil injection nozzle (52).

8. A long-life, easy-to-maintain control arm according to claim 1, characterized in that: The ball seat is manufactured using powder metallurgy.

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