Self-cleaning automobile rear lower control arm

Abstract

The invention relates to the technical field of automobile control arms, in particular to a self-cleaning automobile rear lower control arm which comprises an arm body, a lining part connected to one end of the arm body and a ball head part connected to the other end of the arm body. The lining part comprises an inner framework, an elastic middle body and an outer framework which are coaxially arranged in sequence from inside to outside, and the inner framework and the outer framework are connected together through the elastic middle body; air blowing channels are formed in the two ends of the inner framework, the output ends of the air blowing channels face the exposed part of the elastic middle body, an air storage cavity is formed in the inner side of the elastic middle body, and the input ends of the air blowing channels communicate with the air storage cavity. Through cooperation of the air blowing channel and the air storage cavity, the exposed part of the elastic middle body can be cleaned through radial deformation of the inner framework in the automobile form, dust and silt just attached to the exposed part of the elastic middle body are blown off, the silt is prevented from drying up on the surface of the elastic middle body, and the lining part maintains normal elasticity and deformation capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive control arms, and more specifically to a self-cleaning rear lower control arm for automobiles. Background Art

[0002] In the suspension system of an automobile, the rear lower control arm is a crucial component. It mainly serves to connect the wheel to the vehicle body. During vehicle operation, it bears the transmission of various forces and torques from the road surface, including vertical forces, longitudinal forces, and lateral forces, etc., and plays a key role in maintaining the driving stability, handling performance, and riding comfort of the vehicle.

[0003] However, in actual use, traditional automotive rear lower control arms face numerous problems. Since the rear lower control arm is constantly exposed to a complex and harsh external environment, during vehicle operation, impurities such as dust, sediment, rainwater, and road oil stains raised by the wheels will continuously adhere to the surface of the control arm. The elastomer in the middle of the control arm bushing is easily adhered to by impurities such as dust and sediment, affecting its buffering and vibration isolation performance, accelerating aging and wear, and shortening the service life of the bushing. Summary of the Invention

[0004] The present invention aims at the problems in the prior art and provides a self-cleaning rear lower control arm for automobiles. The specific technical solutions are as follows:

[0005] The self-cleaning rear lower control arm includes an arm body, a bushing portion connected to one end of the arm body, and a ball head portion connected to the other end of the arm body. The bushing portion includes an inner skeleton, an elastic intermediate body, and an outer skeleton coaxially arranged from inside to outside in sequence. The inner skeleton and the outer skeleton are connected together through the elastic intermediate body. Both ends of the inner skeleton are provided with air blowing channels, and the output ends of the air blowing channels face the exposed part of the elastic intermediate body. An air storage cavity is arranged inside the elastic intermediate body, and the input ends of the air blowing channels communicate with the air storage cavity.

[0006] As a further technical solution of the present invention, the cross-sectional area of the air blowing channel gradually decreases along the extension path from the input end to the output end.

[0007] As a further technical solution of the present invention, the ball head portion includes a ball head seat, a ball head, and a hemispherical cover. There is a depression inside the ball head seat. The ball head includes a sphere and a head. The sphere is arranged in the depression of the ball head seat, and the head is connected to the outside of the sphere and extends outside the ball head seat. The hemispherical cover is sleeved outside the head and covers the depression.

[0008] As a further technical solution of the present invention, a scraping blade is connected to the outside of the head, and the outer edge of the scraping blade matches the internal shape of the hemispherical cover.

[0009] As a further technical solution of the present invention, a plurality of groups of scraping blades are provided and are evenly distributed circumferentially around the head.

[0010] As a further technical solution of the present invention, the scraping blades are arranged in a spiral shape, and the spiral direction is the same as the rotation direction of the head.

[0011] As a further technical solution of the present invention, a spacer is connected to the outside of the head, and the spacer is arranged at intervals between the hemispherical cover and the depression.

[0012] As a further technical solution of the present invention, the scraping blade includes a skeleton and a rubber strip connected to the outer edge of the skeleton.

[0013] The beneficial effects of the present invention are as follows:

[0014] (1) In the present application, through the cooperation of the air blowing channel and the air storage cavity, the radial deformation of the inner skeleton during the movement of the vehicle can be utilized to clean the exposed part of the elastic intermediate body, so as to blow off the dust and sediment that have just adhered to the exposed part of the elastic intermediate body, prevent the sediment from drying on the surface of the elastic intermediate body, maintain the normal elasticity and deformation ability of the bushing part, effectively filter the road surface vibration, ensure the comfort and stability of the vehicle driving, and this cleaning method will not have direct physical contact with the surface of the elastic intermediate body, avoid scratching and abrasion of the elastic intermediate body, extend the service life of the bushing, and reduce the additional loss caused by cleaning.

[0015] (2) In the present application, through the setting of the scraping blades, not only can the impurities on the hemispherical cover be scraped off, but also a conveying auger structure for impurities can be formed by a plurality of scraping blades with spiral structures, so that the scraped impurities can be sent out through the gap between the hemispherical cover and the head, avoiding the accumulation of impurities in the hemispherical cover, reducing wear, ensuring the normal rotation of the head, and maintaining the accurate control of the vehicle.

[0016] (3) In the present application, through the setting of the spacer, the depression is directly formed into a closed space, thus preventing impurities from entering the depression and affecting the rotation of the sphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shows the overall structural schematic diagram of the self-cleaning rear lower control arm of the vehicle;

[0018] Figure 2 Shows the structural schematic diagram of the bushing part;

[0019] Figure 3 Shows the structural schematic diagram of the ball head;

[0020] Figure 4 Shows the structural schematic diagram of the scraping blade;

[0021] Figure 5 Shows the structural schematic diagram of the spacer.

[0022] Description of the drawings: 100, arm body; 200, bushing part; 210, inner skeleton; 211, air blowing channel; 220, elastic intermediate body; 221, air storage cavity; 230, outer skeleton; 300, ball head part; 310, ball head seat; 320, ball head; 321, ball body; 322, head; 330, hemispherical cover; 340, wiper blade; 341, skeleton; 342, rubber strip; 350, spacer; 351, connecting ring; 352, rubber ring. Detailed implementation manners

[0023] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0024] Figure 1 Shows a schematic diagram of the overall structure of the self-cleaning rear lower control arm of an automobile; Figure 1 In this, the self-cleaning rear lower control arm of the automobile includes an arm body 100, a bushing part 200 connected to one end of the arm body 100, and a ball head part 300 connected to the other end of the arm body 100.

[0025] Figure 2 Shows a schematic diagram of the structure of the bushing part 200; Figure 2Among them, the bushing part 200 includes an inner skeleton 210, an elastic intermediate body 220, and an outer skeleton 230 that are coaxially arranged from the inside out in sequence. The inner skeleton 210 and the outer skeleton 230 are connected together through the elastic intermediate body 220. Blowing channels 211 are provided at both ends of the inner skeleton 210, and the output ends of the blowing channels 211 face the exposed part of the elastic intermediate body 220. An air storage cavity 221 is provided inside the elastic intermediate body 220, and the input ends of the blowing channels 211 communicate with the air storage cavity 221. In actual use, when the vehicle is driving, it will drive the inner skeleton 210 to vibrate radially. At this time, the elastic intermediate body 220 is squeezed by the inner skeleton 210 and deforms. At the same time, the space of the air storage cavity 221 is compressed, and the gas in the air storage cavity 221 is pressed into the blowing channels 211 and blown to the exposed part of the elastic intermediate body 220 through the output ends of the blowing channels 211 to blow off the dust and sediment that have just adhered to the exposed part of the elastic intermediate body 220, preventing the sediment from drying on the surface of the elastic intermediate body 220, enabling the bushing part 200 to maintain normal elasticity and deformation ability, effectively filtering road vibrations, ensuring the comfort and stability of vehicle driving, and this cleaning method does not have direct physical contact with the surface of the elastic intermediate body 220, avoiding scratches and abrasions on the elastic intermediate body 220, prolonging the service life of the bushing, and reducing the additional loss caused by cleaning; the cross-sectional area of the blowing channel 211 gradually decreases along the extension path from the input end to the output end; this causes the airflow to gradually accelerate in the blowing channel 211, and the high-speed airflow can generate a stronger impact force, more effectively blowing off impurities such as dust and sediment attached to the surface of the elastic intermediate body 220, improving the cleaning effect.

[0026] Figure 3 The structural schematic diagram of the ball head part 300 is shown; Figure 3In it, the ball head 300 includes a ball head seat 310, a ball head 320, and a hemispherical cover 330. There is a depression in the ball head seat 310. The ball head 320 includes a sphere 321 and a head 322. The sphere 321 is arranged in the depression of the ball head seat 310, and the head 322 is connected outside the sphere 321 and extends outside the ball head seat 310. The hemispherical cover 330 is sleeved outside the head 322 and covers the depression. By the arrangement of the hemispherical cover 330, replacing the traditional corrugated structure, the sewage splashed on the surface of the hemispherical cover 330 can slide off, extending the service life of the protective cover. A scraping blade 340 is connected outside the head 322, and the outer edge of the scraping blade 340 matches the internal shape of the hemispherical cover 330. When the vehicle is running, it drives the head 322 and the scraping blade 340 to rotate synchronously. The scraping blade 340 can scrape off the impurities adhering to the inner wall of the hemispherical cover 330, avoiding damage to the hemispherical cover 330 when it deforms. The scraping blades 340 are provided with several groups and are evenly distributed circumferentially around the head 322. The multiple groups of scraping blades 340 can ensure the cleaning effect on the inner wall of the hemispherical cover 330. The scraping blade 340 is spirally arranged, and the spiral direction is the same as the rotation direction of the head 322. Through the scraping blades 340 with multiple spiral structures, a conveying auger structure for impurities is formed, so that the scraped impurities can be sent out through the gap between the hemispherical cover 330 and the head 322, avoiding the accumulation of impurities in the hemispherical cover 330, reducing wear, ensuring the normal rotation of the head 322, and maintaining the accurate vehicle control. A spacer 350 is connected outside the head 322, and the spacer 350 is arranged at intervals between the hemispherical cover 330 and the depression. That is to say, through the arrangement of the spacer 350, a closed space is directly formed in the depression, thus preventing impurities from entering the depression and affecting the rotation of the sphere 321, while still ensuring the self-cleaning function inside the hemispherical cover 330.

[0027] Figure 4 The structural schematic diagram of the scraping blade 340 is shown; Figure 4 In it, the scraping blade 340 includes a framework 341 and a rubber strip 342 connected to the outer edge part of the framework 341. The framework 341 part of the scraping blade 340 can apply sufficient deformation pressure to the hemispherical cover 330, forcing the hemispherical cover 330 to separate from the impurities on its surface, while the rubber strip 342 is in direct contact with the hemispherical cover 330, avoiding damage to the hemispherical cover 330 and being beneficial to the continuous use of the hemispherical cover 330.

[0028] Figure 5 The structural schematic diagram of the spacer 350 is shown; Figure 5Among them, the spacer 350 includes a connecting ring 351 rotatably connected to the outside of the head 322 and a rubber ring 352 connected to the outside of the connecting ring 351. The rubber ring 352 has a corrugated structure along the radial path; the connecting ring 351 allows relative rotation with the head 322 to ensure the stable rotation of the head 322. As a deformable part, the rubber ring 352 can allow the connecting ring 351 to move with the yaw of the head 322. The corrugated structure of the rubber ring 352 reserves the movement space for the connecting ring 351, and at the same time can continuously ensure the sealing of the depression.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. Self-cleaning rear lower control arm for vehicle, comprising an arm body (100), a bushing portion (200) connected to one end of the arm body (100), and a ball head portion (300) connected to the other end of the arm body (100); characterized in that, The bushing portion (200) includes an inner skeleton (210), an elastic intermediate body (220), and an outer skeleton (230) that are coaxially arranged in sequence from the inside out. The inner skeleton (210) and the outer skeleton (230) are connected together through the elastic intermediate body (220). Both ends of the inner skeleton (210) are provided with air blowing channels (211). The output end of the air blowing channel (211) faces the exposed portion of the elastic intermediate body (220). An air storage cavity (221) is provided inside the elastic intermediate body (220). The input end of the air blowing channel (211) communicates with the air storage cavity (221).

2. The self-cleaning rear lower control arm of a vehicle according to claim 1, wherein: The cross-sectional area of the air blowing channel (211) gradually decreases along the extension path from the input end to the output end.

3. The self-cleaning rear lower control arm of a vehicle according to claim 2, characterized in that: The ball head portion (300) includes a ball head seat (310), a ball head (320), and a hemispherical cover (330). A recess is provided inside the ball head seat (310). The ball head (320) includes a spherical body (321) and a head portion (322). The spherical body (321) is arranged in the recess of the ball head seat (310). The head portion (322) is connected outside the spherical body (321) and extends outside the ball head seat (310). The hemispherical cover (330) is sleeved outside the head portion (322) and covers the recess.

4. The self-cleaning rear lower control arm of a vehicle according to claim 3, wherein: A scraping piece (340) is connected outside the head portion (322). The outer edge of the scraping piece (340) matches the internal shape of the hemispherical cover (330).

5. The self-cleaning rear lower control arm of a vehicle according to claim 4, wherein: Several groups of the scraping pieces (340) are provided and are evenly distributed circumferentially around the head portion (322).

6. The self-cleaning rear lower control arm of a vehicle according to claim 5, characterized in that: The scraping piece (340) is spirally arranged, and the spiral direction is the same as the rotation direction of the head portion (322).

7. The self-cleaning rear lower control arm of a vehicle according to claim 6, characterized in that: A spacer (350) is connected outside the head portion (322). The spacer (350) is arranged at intervals between the hemispherical cover (330) and the recess.

8. The self-cleaning rear lower control arm of a vehicle according to claim 6, characterized in that: The scraping piece (340) includes a skeleton (341) and a rubber strip (342) connected to the outer edge portion of the skeleton (341).

9. The self-cleaning rear lower control arm of a vehicle according to claim 7, wherein: The spacer (350) includes a connecting ring (351) rotatably connected outside the head portion (322) and a rubber ring (352) connected to the outside of the connecting ring (351). The rubber ring (352) is a corrugated structure along the radial path.

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