Automobile swing arm with self-lubricating function
By introducing an oil reservoir, oil injection pipe, and sponge structure into the automotive swing arm, the problems of untimely and uneven lubrication are solved, achieving a self-lubricating effect and improving the service life and motion stability of the swing arm.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DEMING AUTOMOBILE PARTS
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-12
AI Technical Summary
The lubrication of the existing automotive swing arm connection is not timely, resulting in high maintenance costs. Furthermore, the loss or uneven distribution of lubricating oil can lead to accelerated wear of components, affecting driving safety and service life.
A self-lubricating automotive swing arm was designed, employing an oil reservoir, oil injection pipe, and sponge structure to achieve automatic storage, delivery, and uniform distribution of lubricating oil. The design of the inclined groove on the inner wall of the ball joint and the oil injection hole enables continuous slow release and uniform application of lubricating oil.
It achieves convenient and timely lubrication, improves the wear resistance and service life of the swing arm, enhances the smoothness and reliability of movement, and reduces maintenance frequency and cost.
Smart Images
Figure CN224224855U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive swing arms, specifically an automotive swing arm with self-lubricating function. Background Technology
[0002] The control arm is an important component of the car suspension system. It is mainly used to support the car body, connect the wheels to the frame, and absorb vibrations during driving to ensure the stability and comfort of the vehicle. The main purpose of the control arm is to support the car body, and it also has a buffering function. It can be flexibly matched with shock absorbers.
[0003] In existing automotive control arms, the connection points of the control arms often suffer from problems such as untimely lubrication and high maintenance costs. Traditional lubrication methods are prone to increased wear of components due to lubricant loss or uneven distribution, which can produce abnormal noises and even affect driving safety. In addition, frequent maintenance increases user costs and reduces the service life and reliability of the control arms.
[0004] Therefore, a self-lubricating car swing arm is proposed to address the above problems. Utility Model Content
[0005] To overcome the shortcomings of existing technologies and solve the problems of untimely lubrication, high maintenance costs, and accelerated wear of components due to lubricant loss or uneven distribution at the connection point of automotive swing arms, this utility model proposes an automotive swing arm with self-lubricating function.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a car swing arm with self-lubricating function, including a swing arm body, a ball joint assembly and an oil reservoir.
[0007] A connecting cylinder assembly is installed at one connecting end of the swing arm body. The connecting cylinder assembly includes a connecting cylinder, and a groove is formed on the inner side of the connecting cylinder. The groove is filled with sponge. The connecting cylinder and the swing arm body are provided with a first oil injection hole.
[0008] The ball joint assembly includes a ball joint, the inner wall of which is provided with a zigzag groove, and the ball joint and the rocker arm body are provided with a second oil injection hole.
[0009] The oil storage bag is provided with two output ends, and the two output ends of the oil storage bag are respectively fitted with the first oil injection pipe and the second oil injection pipe.
[0010] Preferably, there are multiple grooves, which are distributed circumferentially at equal angles on the connecting cylinder.
[0011] Preferably, the swing arm body is made of double-layered plates bent and welded at the edges, forming a cavity.
[0012] Preferably, the oil storage bag, the first oil injection pipe and the second oil injection pipe are all located inside the cavity of the swing arm body, and the first oil injection pipe and the second oil injection pipe are both flexible hoses.
[0013] Preferably, the ends of the first oil injection pipe and the second oil injection pipe are respectively fitted onto the first oil injection hole and the second oil injection hole.
[0014] Preferably, the oil storage bag is adhered to the top of the cavity inner wall of the swing arm body.
[0015] Preferably, there are multiple oblique grooves, which are equidistantly distributed circumferentially within the ball head seat.
[0016] Preferably, the second oil injection hole is connected to the two oblique grooves.
[0017] The advantages of this utility model are:
[0018] 1. This utility model achieves automatic storage and transportation of lubricating oil through the structural design of the oil storage bag and the first and second oil injection pipes, solving the problem of cumbersome traditional manual periodic oil injection maintenance and improving the convenience and timeliness of swing arm lubrication.
[0019] 2. This utility model achieves the function of continuous slow release of lubricating oil by filling the groove inside the connecting cylinder with sponge, which solves the problems of easy oil loss and short-lasting lubrication in traditional lubrication methods, and improves the wear resistance and service life of the connecting parts.
[0020] 3. This utility model achieves uniform distribution of lubricating oil at the ball joint by connecting the oblique groove on the inner wall of the ball joint with the second oil injection hole, thus solving the problem of local wear caused by uneven oil distribution in traditional lubrication and improving the stability and reliability of the swing arm movement. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the automotive swing arm structure of this utility model;
[0023] Figure 2 This is a schematic cross-sectional view of the rear structure of the automotive swing arm of this utility model.
[0024] Figure 3 This is a schematic diagram of the bottom cross-sectional structure of this utility model;
[0025] Figure 4 For the present utility model Figure 3 A magnified view of the structure at point A in the middle;
[0026] Figure 5 For the present utility model Figure 3 A magnified structural diagram of section B in the middle;
[0027] Figure 6 This is a schematic diagram of the connecting cylinder assembly of this utility model.
[0028] In the figure: 1. Swing arm body; 2. Connecting cylinder assembly; 201. Connecting cylinder; 202. Groove; 203. Sponge; 204. First oil injection hole; 3. Ball head assembly; 301. Ball head; 302. Twill groove; 303. Second oil injection hole; 4. Oil storage bag; 5. First oil injection pipe; 6. Second oil injection pipe. Detailed Implementation
[0029] 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 scope of protection of the present utility model.
[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0031] This application discloses an automotive swing arm with self-lubricating function. (Refer to...) Figures 1 to 6 A self-lubricating automotive swing arm includes a swing arm body 1, a ball joint assembly 3, and an oil reservoir 4. The swing arm body 1 is formed by bending and welding double-layer plates to form a cavity. The swing arm body 1 uses double-layer plates to bend and weld to form a cavity, which provides a protective space for the oil reservoir and oil injection pipe, avoiding external impact or dust from affecting the internal oil circuit. At the same time, the flexibility of the hose adapts to the deformation during the movement of the swing arm, ensuring smooth oil flow.
[0032] Preferably, the oil storage bag 4 is made of elastic rubber material, and the lubricating oil is passively output through the compression deformation during the movement of the swing arm. A third oil filling hole connected to the oil storage bag is opened on the top of the swing arm body 1 to facilitate the replenishment of lubricating oil later.
[0033] A connecting tube assembly 2 is installed at one connecting end of the swing arm body 1. The connecting tube assembly 2 includes a connecting tube 201. A groove 202 is provided on the inner side of the connecting tube 201. The groove 202 is filled with a sponge 203. The connecting tube 201 and the swing arm body 1 are provided with a first oil injection hole 204. There are multiple grooves 202, which are distributed circumferentially at equal angles on the connecting tube 201. The sponge 203 is made of highly oil-absorbent polyurethane material. The sponge 203 is fixed with an environmentally friendly adhesive to prevent it from falling off during movement.
[0034] Lubricating oil enters the groove 202 inside the connecting cylinder 201 through the first oil injection hole 204. The sponge 203 filled in the groove absorbs the lubricating oil and forms an "oil storage layer". When the connecting cylinder 201 moves relative to the external parts, the sponge 203 is squeezed and slowly releases the lubricating oil, which is evenly applied to the connecting surface to reduce friction and wear. The multiple grooves 202 distributed at equal angles expand the lubrication coverage area. The oil absorption characteristics of the sponge 203 prevent the lubricating oil from flowing out quickly and achieve continuous oil supply.
[0035] The ball head assembly 3 includes a ball head 301. The inner wall of the ball head 301 is provided with a diagonal groove 302. The ball head 301 and the rocker arm body 1 are provided with a second oil injection hole 303. There are multiple diagonal grooves 302, which are equidistantly distributed in the ball head 301. The second oil injection hole 303 is connected to two diagonal grooves 302.
[0036] Lubricating oil flows into the grooved grooves 302 on the inner wall of the ball head seat 301 through the second oil injection hole 303. The grooves are equidistantly distributed around the circumference and communicate with the oil injection hole. When the ball head component rotates or oscillates within the ball head seat, the grooves guide the lubricating oil to diffuse circumferentially and axially, forming a uniform oil film that covers the entire contact surface. The groove design increases the flow path of the lubricating oil, expands the lubrication area, and avoids local dry friction. At the same time, the direction of the grooves matches the direction of movement, improving lubrication efficiency.
[0037] The oil storage bag 4 is provided with two output ends. The two output ends of the oil storage bag 4 are respectively fitted with the first oil injection pipe 5 and the second oil injection pipe 6. The oil storage bag 4, the first oil injection pipe 5 and the second oil injection pipe 6 are all located inside the cavity of the swing arm body 1. The first oil injection pipe 5 and the second oil injection pipe 6 are both flexible hoses. The ends of the first oil injection pipe 5 and the second oil injection pipe 6 are respectively fitted with the first oil injection hole 204 and the second oil injection hole 303. The oil storage bag 4 is attached to the top of the inner wall of the cavity of the swing arm body 1.
[0038] The oil storage bag 4 is attached to the top of the cavity of the swing arm body 1 and stores lubricating oil inside. Its two output ends are connected to the first oil filling hole 204 of the connecting cylinder assembly 2 and the second oil filling hole 303 of the ball head seat assembly 3 through the first oil filling pipe 5 and the second oil filling pipe 6, respectively. When the swing arm swings, the oil storage bag shakes or is squeezed, and the lubricating oil flows to the oil filling hole through the first oil filling pipe 5 and the second oil filling pipe 6.
[0039] Working principle:
[0040] The oil reservoir 4 is bonded to the top of the cavity formed by welding the double-layer plates of the swing arm body 1. It stores lubricating oil inside, and its two output ends are connected to the first oil injection pipe 5 and the second oil injection pipe 6, both of which are flexible hoses. When the swing arm swings while the car is in motion, the oil reservoir deforms due to shaking or compression, forcing the lubricating oil to flow through the flexible hoses to the oil injection holes of the connecting cylinder assembly and the ball joint assembly, thus achieving automatic oil supply without manual intervention.
[0041] Lubricating oil flows into the groove 202 inside the connecting cylinder 201 through the first oil injection hole 204. The groove is distributed in multiple circumferentially at equal angles. The sponge 203 filled in the groove absorbs the lubricating oil and forms an "oil reservoir".
[0042] When the connecting cylinder moves relative to external components such as the frame or suspension components, such as swinging or rotating, the sponge is squeezed and releases lubricating oil, which is evenly applied to the connecting surface along the inner wall of the groove to form an oil film to reduce friction.
[0043] The passive compression of the oil storage bag 4 → directional delivery through the oil injection pipe → storage and guidance through the groove 202 / twill groove 302 → lubrication release triggered by the moving parts forms a self-sustaining cycle of "oil storage-oil delivery-oil distribution-lubrication". It eliminates the need for manual periodic oiling, solving the problems of cumbersome maintenance and untimely lubrication in traditional lubrication methods, and achieving a long-lasting and reliable self-lubricating effect.
[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A self-lubricating automotive control arm, characterized in that, include: A connecting tube assembly (2) is installed at one connecting end of the swing arm body (1). The connecting tube assembly (2) includes a connecting tube (201). A groove (202) is provided on the inner side of the connecting tube (201). The groove (202) is filled with a sponge (203). The connecting tube (201) and the swing arm body (1) are provided with a first oil injection hole (204). Ball head assembly (3) The ball head assembly (3) includes a ball head (301), the inner wall of the ball head (301) is provided with a ribbed groove (302), and the ball head (301) and the swing arm body (1) are provided with a second oil injection hole (303). Oil storage bag (4) is provided with two output ends. The two output ends of the oil storage bag (4) are respectively fitted with the first oil injection pipe (5) and the second oil injection pipe (6).
2. The automotive swing arm with self-lubricating function according to claim 1, characterized in that: There are multiple grooves (202), which are distributed circumferentially at equal angles on the connecting cylinder (201).
3. A self-lubricating automotive swing arm according to claim 1, characterized in that: The swing arm body (1) is made of double-layer plate bent and welded at the edges, forming a cavity.
4. A self-lubricating automotive swing arm according to claim 1, characterized in that: The oil storage bag (4), the first oil injection pipe (5) and the second oil injection pipe (6) are all located inside the cavity of the swing arm body (1), and the first oil injection pipe (5) and the second oil injection pipe (6) are both flexible hoses.
5. A self-lubricating automotive swing arm according to claim 4, characterized in that: The ends of the first oil injection pipe (5) and the second oil injection pipe (6) are respectively installed on the first oil injection hole (204) and the second oil injection hole (303).
6. A self-lubricating automotive swing arm according to claim 1, characterized in that: The oil storage bag (4) is attached to the top of the cavity inner wall of the swing arm body (1).
7. A self-lubricating automotive swing arm according to claim 1, characterized in that: The oblique grooves (302) are multiple and are equidistantly distributed circumferentially within the ball head seat (301).
8. A self-lubricating automotive swing arm according to claim 1, characterized in that: The second oil injection hole (303) is connected to the two oblique grooves (302).