Automobile control arm for new energy automobile

Abstract

The invention discloses an automobile control arm for a new energy automobile, which belongs to the field of automobile suspension system accessories and comprises a control arm body, a ball seat is arranged on the control arm body, lubricating oil is filled in the ball seat, a ball pin is arranged on the ball seat, and two suspension bushings are symmetrically arranged on the control arm body. The ball pin is sleeved with a protective sleeve made of elastic materials, and the protective sleeve is connected with the surface of the ball seat. An elastic ring is installed on the side wall of the ball seat, and an annular cavity is formed in the elastic ring. By arranging the elastic ring, the annular cavity, the cavities and the output hole, the elastic ring can be extruded through the side wall of the ball pin in the rotating process of the ball pin, at the moment, part of the cavities are extruded, lubricating oil in the extruded cavities enters the annular cavity and then is discharged through the output hole, and the lubricating oil discharged from the output hole impacts the inner wall of the protective sleeve; therefore, impact force can be generated on the inner wall of the protective sleeve, and grit attached to the outer wall of the protective sleeve is shaken off through the impact force.

Description

Technical Field

[0001] The present invention relates to the field of automobile suspension system accessories, and more specifically, to an automobile control arm for a new energy automobile. Background Art

[0002] The automobile control arm, also known as the swing arm, is a guiding mechanism component that elastically connects the wheel and the body. During the driving process of the car, due to the vibration caused by changes in the road surface and the need for steering, the wheel will inevitably bounce up and down and swing left and right, and the force generated by the wheel movement will be transmitted to the body through the control arm. The control arm generally adopts a three-end connection method, with the ball head end connected to the car steering knuckle, and the other two bushing ends connected to the body or subframe. The ball head is an important component of the control arm assembly, which is particularly critical to the bounce and steering of the wheel. It must be ensured to have a good sealing and lubrication environment to reduce ball head wear and ensure performance.

[0003] The Chinese patent with authorization announcement number: CN107471946B discloses an automobile control arm, which can well protect the ball head and conveniently lubricate the ball head by providing a dust cover, thereby reducing the wear of the ball head and conveniently replacing the ball head assembly.

[0004] Although the above patent can reduce the wear degree of the ball head by providing a rubber sleeve, it still has the following shortcomings: when the vehicle is driving on a gravel road, some of the splashed sand and gravel will hit the rubber sleeve. Long-term sand and gravel impact will cause wear or slight dents on the rubber surface, especially when passing through muddy gravel roads on rainy days, sewage and some gravel will adhere to the dents on the surface of the rubber sleeve. Therefore, when the rubber sleeve is squeezed or bent, the wear degree of the rubber sleeve is easily increased under the action of gravel, that is, the dents or wear degree are increased, so as to affect its sealing and cushioning effect.

[0005] To this end, a vehicle control arm for new energy vehicles is proposed. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a vehicle control arm for new energy vehicles, which can clean up the gravel attached to the surface of the rubber sleeve, thereby reducing the wear of the rubber sleeve, ensuring the sealing of the rubber sleeve, and at the same time evenly applying lubricating oil to the contact area between the ball stud and the ball seat.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A vehicle control arm for a new energy vehicle comprises a control arm body, a ball seat is arranged on the control arm body, lubricating oil is contained in the ball seat, a ball pin is arranged on the ball seat, and two suspension bushings are symmetrically arranged on the control arm body; The ball stud is covered with a protective sleeve made of elastic material, and the protective sleeve is connected to the surface of the ball seat; An elastic ring is installed on the side wall of the ball seat, an annular cavity is opened on the elastic ring, output holes matching with the inner side wall of the protective sleeve are evenly opened on the top wall of the annular cavity, cavities are evenly opened on the elastic ring, the cavities are located below the annular cavity, a one-way valve whose output end is connected with the annular cavity is inserted on the top wall of each cavity, the one-way valve is located at a position of the top wall of the cavity away from the ball pin, and a feed port is opened on the side wall of each cavity close to the ball pin; The inner wall of the protective sleeve is evenly provided with annular grooves, the grooves are matched with the output holes, a connecting rope is installed between the top wall and the bottom wall of the groove, and a shaking mechanism matched with the groove is provided on the protective sleeve; Among them, the ball pin squeezes the elastic ring, and under the action of the annular cavity, the cavity and the one-way valve, the lubricating oil is discharged through each output hole and impacts the inner wall of the protective sleeve, among which part of the lubricating oil impacts the top wall of the groove, and the impact force is transmitted to the protective sleeve, and then the lubricating oil falls into the ball seat; the lubricating oil impacting the top wall of the groove drives the part between the two adjacent grooves to shake, and under the action of the impact force and shaking, the gravel on the outer wall of the protective sleeve can be cleaned away.

[0009] During installation, grease is loaded into the ball seat as lubricating oil, and the ball pin is lubricated by the lubricating oil. Since the suspension bushing of the automobile control arm is installed on the subframe and the ball pin is connected to the steering knuckle, the control arm body will swing with the center of the suspension bushing as the center during the driving of the vehicle. Since the ball pin includes a ball head and a pin shaft, the ball head of the ball pin rotates in the ball seat during the swinging of the ball pin, and the pin shaft rotates with the ball head. At this time, the side wall of the protective sleeve close to the rotation direction of the ball pin and the elastic ring will be squeezed by the rotating pin shaft. At this time, the protective sleeve made of elastic material will be compressed, and the feed port will contact the pin shaft. At this time, the lubricating oil in the cavity on the squeezed elastic ring is discharged into the annular cavity through the one-way valve, making the volume of the annular cavity smaller than the volume of the cavity. Therefore, the lubricating oil discharged into the annular cavity through the one-way valve will quickly fill the annular cavity. With the continuous squeezing of the ball pin pin shaft, the lubricating oil in the annular cavity will be discharged. The lubricating oil is discharged through each output hole, so the lubricating oil discharged from the output hole will impact the inner wall of the protective sleeve, and part of the lubricating oil impacts the top wall of the annular groove, and drives the part above the top wall of the groove to shake, and drives the top and bottom of multiple grooves to shake under the action of the connecting rope, thereby enhancing the shaking effect, and at the same time, the impact force is transmitted to the gravel attached to the outer wall of the protective sleeve. Since the output holes are evenly arranged on the top wall of the annular cavity, for the part of the protective sleeve that is not squeezed by the ball pin, the dents on its surface are in an open state, and the impact force can make the gravel in the part of the dent fall off, and for the gravel in the dent in the squeezed state, the impact force can move the gravel in the direction away from the protective sleeve to prevent the dent from further deepening. Therefore, the outer wall of the protective sleeve can be automatically cleaned to prevent the gravel from being stuck in the dent on the surface of the protective sleeve, thereby preventing the dent from being worn more deeply, thereby ensuring the sealing and buffering effect of the protective sleeve.

[0010] When the ball pin is reset and reversed, the squeezed cavity gradually recovers, so the cavity is in a negative pressure state. When the ball pin is out of contact with the elastic ring, under the action of the one-way valve, the cavity in the negative pressure state sucks part of the lubricating oil in the ball seat through the feed port, thereby preparing for being squeezed again.

[0011] Since grease is generally assembled by applying, and in the low temperature environment of winter, the base oil viscosity of the grease increases, resulting in a decrease in overall fluidity. Therefore, the part of the lubricating oil in the ball seat that is not directly in contact with the ball stud will find it difficult to contact the ball stud through active flow, so that the ball stud is always in contact with a certain part of the lubricating oil. As time goes by, the lubricating effect of the lubricating oil in contact with the ball stud gradually weakens, and the lubricating effect on the ball stud becomes worse. Therefore, the lubricating oil in the ball seat can be driven to flow by squeezing the cavity during the rotation of the ball stud, so that the lubricating oil in the ball seat can all contact with the ball stud, thereby improving the utilization rate of the lubricating oil and improving the lubricating effect on the ball stud.

[0012] Furthermore, by placing the elastic ring in the lubricating oil, the degree of wear of the elastic ring can be reduced when the ball stud squeezes the elastic ring, thereby preventing the elastic ring from breaking.

[0013] Furthermore, the shaking mechanism includes a negative pressure hole opened on the top wall of the groove.

[0014] When the protective sleeve is squeezed, the top wall and bottom wall of the groove at the squeezed part fit together, and the negative pressure hole is adsorbed together with the bottom wall of the groove. When the squeezed part recovers, the negative pressure hole is forcibly pulled away from the bottom wall of the groove. During the pulling process, the top wall and bottom wall of the groove can be driven to shake, that is, the protective sleeve can be driven to shake, and the gravel on the surface of the protective sleeve and in the dent can be shaken off, which plays a role in improving the cleaning effect of the protective sleeve surface. At the same time, during the shaking process, the lubricating oil attached to the inner wall of the protective sleeve can be shaken off, which plays a role in ensuring that the lubricating oil can fall normally.

[0015] Here, the negative pressure hole is forcibly pulled away from the bottom wall of the groove to cause the bottom wall of the groove to vibrate, which is the same principle as pulling the suction cup off the surface of the adsorbent to cause the adsorbent and the suction cup itself to vibrate, so it will not be repeated.

[0016] Furthermore, a first elastic rope is horizontally fixedly installed in the negative pressure hole, and a first impact block made of elastic material is installed on the first elastic rope.

[0017] When the negative pressure hole is pulled away from the bottom wall of the groove, the negative pressure hole shakes together with the top wall of the groove, and during the shaking process, the first elastic rope drives the first impact block to shake. At this time, the first impact block hits the side wall of the negative pressure hole, which improves the shaking effect of the protective sleeve and enables the lubricating oil in the negative pressure hole to adhere to the first impact block. Then, as the first impact block swings, the lubricating oil on the surface of the first impact block is thrown off and falls onto the surface of the ball pin, which improves the lubrication effect on the ball pin.

[0018] Furthermore, a through hole is provided on the first impact block, and the first elastic rope passes through the through hole and slidably cooperates with the first impact block. During the shaking process of the first elastic rope, the first impact block slides on the surface of the first elastic rope. The surface of the first elastic rope is evenly provided with anti-slip grooves, so that heat can be generated to heat the first impact block during the sliding process of the first impact block, thereby increasing the fluidity of the lubricating oil on the surface of the first impact block and ensuring that the lubricating oil on the surface of the first impact block can be thrown off; and increasing the friction between the first impact block and the first elastic rope, thereby improving the heat generation effect during the sliding process of the first impact block.

[0019] A second elastic rope is evenly installed between the inner wall of the protective sleeve and the control arm body, and a second impact block is fixedly installed on the second elastic rope. The second impact block is used to impact the inner wall of the protective sleeve.

[0020] When the protective sleeve is squeezed by the pin shaft of the ball stud, the indented portion on the surface of the protective sleeve is in a closed state, and the sand and gravel in the indented portion at the squeezed portion is difficult to be discharged.

[0021] When the ball pin is in a vertical state, under the action of the second elastic rope, the second impact block contacts the inner wall of the protective sleeve and applies pressure to the inner wall of the second protective sleeve; when the protective sleeve is squeezed and deformed, the second elastic rope is in a loose state.

[0022] When the ball pin is reset, the squeezed part of the protective sleeve is reset. During the reset process of this part, the dent closed by squeezing opens, and the loose second elastic rope located at this part is quickly straightened, so that the second impact block can be driven to hit the inner wall of the protective sleeve during the straightening of the second elastic rope. The impact force generated at this time can eject the gravel in the open dent, thereby improving the cleaning effect of the gravel in the dent on the surface of the protective sleeve.

[0023] Furthermore, a cavity is formed on the second impact block, and an air hole is formed on the side wall of the cavity. The air hole is located on the side wall of the cavity close to the ball stud.

[0024] When the second impact block hits the protective sleeve, the second impact block is also deformed under the action of the reaction force. At this time, the cavity on the second impact block exhausts air outward through the air hole, and the gas discharged from the air hole impacts the surface of the ball pin shaft, thereby blowing the lubricating oil attached to the surface of the ball pin shaft downward, ensuring that the gap between the ball pin and the ball seat can be filled with lubricating oil, ensuring the lubrication effect between the ball pin and the ball seat, and at the same time ensuring that the feed port can absorb a sufficient amount of lubricating oil, ensuring that the output hole can drain oil normally.

[0025] Furthermore, the protective sleeve, the first impact block and the second impact block are all made of rubber material.

[0026] Since both the first impact block and the second impact block need to apply impact force to the protective cover and then drive the protective cover to vibrate through the impact force, the protective cover, the first impact block and the second impact block are made of the same material, which ensures that the protective cover can vibrate during impact and the first impact block and the second impact block can vibrate at the same time.

[0027] Compared with the prior art, the present invention has the following beneficial effects: (1) This scheme provides an elastic ring, an annular cavity, a cavity, and an output hole, so that the elastic ring can be squeezed through the side wall of the ball pin during the rotation of the ball pin. At this time, part of the cavity is squeezed, and the lubricating oil in the squeezed cavity enters the annular cavity and is then discharged through the output hole. The lubricating oil discharged from the output hole impacts the inner wall of the protective sleeve, thereby generating an impact force on the inner wall of the protective sleeve. The impact force shakes off the sand and gravel attached to the outer wall of the protective sleeve, thereby reducing the degree of wear of the protective sleeve. (2) This solution, by providing a one-way valve and a feed port, can drive the lubricating oil in the ball seat to flow during the extrusion of the elastic ring, thereby increasing the flow effect of the lubricating oil in a low-temperature environment, increasing the contact probability between the lubricating oil and the ball pin, and playing a role in improving the lubrication effect of the ball pin; (3) This scheme provides a groove and a negative pressure hole, so that when the ball pin squeezes the protective sleeve, the top wall and the bottom wall of the groove can be adsorbed together through the negative pressure hole. When the ball pin is reset, the protective sleeve forcibly pulls the negative pressure hole away from the bottom wall of the groove during the reset process, thereby driving the top wall and the bottom wall of the groove to vibrate, that is, driving the protective sleeve to vibrate, thereby improving the cleaning effect of the gravel on the outer wall of the protective sleeve; (4) This scheme evenly opens cavities on the elastic ring, so that the annular cavity is filled with lubricating oil when the ball pin rotates in any direction, thereby ensuring that the protective sleeve can be subjected to impact force during the rotation of the ball pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the combined structure of the control arm body, the ball stud, the suspension bushing and the protective sleeve of the present invention; Figure 2 It is a bottom view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the structure of the protective cover of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the control arm body of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the combined structure of the first elastic rope and the first impact block of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the elastic ring of the present invention.

[0029] Description of the numbers in the figure: 1. Control arm body; 2. Ball pin; 3. Suspension bushing; 4. Protective cover; 5. Elastic ring; 6. Annular cavity; 7. Output hole; 8. Cavity; 9. One-way valve; 10. Feed inlet; 11. Groove; 12. Connecting rope; 13. Negative pressure hole; 14. First elastic rope; 15. First impact block; 16. Through hole; 17. Anti-slip pattern; 18. Second elastic rope; 19. Second impact block; 20. Cavity; 21. Air hole; 22. Diaphragm; 23. Semipermeable membrane. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 8 A vehicle control arm for a new energy vehicle comprises a control arm body 1, a ball seat is arranged on the control arm body 1, lubricating oil is contained in the ball seat, a ball pin 2 is arranged on the ball seat, and two suspension bushings 3 are symmetrically arranged on the control arm body 1; The ball stud 2 is covered with a protective sleeve 4 made of elastic material, and the protective sleeve 4 is connected to the surface of the control arm body 1; An elastic ring 5 is installed on the side wall of the ball seat, and an annular cavity 6 is opened on the elastic ring 5. Output holes 7 that match the inner wall of the protective sleeve 4 are evenly opened on the top wall of the annular cavity 6. Cavities 8 are evenly opened on the elastic ring 5. The cavity 8 is located below the annular cavity 6. A one-way valve 9 whose output end is connected to the annular cavity 6 is inserted on the top wall of each cavity 8. The one-way valve 9 is located at a position of the top wall of the cavity 8 away from the ball pin 2, and a feed port 10 is opened on the side wall of each cavity 8 close to the ball pin 2. A vibration mechanism is provided on the protective sleeve 4; The vibration mechanism includes an annular groove 11 evenly arranged on the protective sleeve 4, the groove 11 cooperates with the output hole 7, a connecting rope 12 is installed between the top wall and the bottom wall of the groove 11, and a shaking mechanism cooperating with the groove 11 is provided on the protective sleeve 4; Among them, the ball pin 2 squeezes the elastic ring 5, and under the action of the annular cavity 6, the cavity 8 and the one-way valve 9, the lubricating oil is discharged through each output hole 7 and impacts the inner wall of the protective sleeve 4, wherein part of the lubricating oil impacts the top wall of the groove 11, and the impact force is transmitted to the protective sleeve 4, and then the lubricating oil falls into the ball seat; the impact force of the lubricating oil impacting the top wall of the groove 11 drives the part between the two adjacent grooves 11 to shake, and under the action of the impact force and shaking, the gravel located on the outer wall of the protective sleeve 4 can be cleaned away.

[0032] During installation, grease is loaded into the ball seat as lubricating oil, and the ball pin 2 is lubricated by the lubricating oil; since the suspension bushing 3 of the automobile control arm is installed on the subframe, and the ball pin 2 is connected to the steering knuckle, the control arm body 1 will swing with the center of the suspension bushing 3 as the center of the circle during the vehicle driving process. Since the ball pin 2 includes a ball head and a pin shaft, the ball head of the ball pin 2 rotates in the ball seat during the swinging process of the ball pin 2, and the pin shaft rotates with the ball head. At this time, the side wall of the protective sleeve 4 close to the rotation direction of the ball pin 2 and the elastic The elastic ring 5 will be squeezed by the rotating pin shaft. At this time, the protective sleeve 4 made of elastic material will be compressed. At the same time, the feed port 10 contacts the pin shaft, so the feed port 10 is blocked. At this time, the lubricating oil in the cavity 8 on the squeezed elastic ring 5 is discharged into the annular cavity 6 through the one-way valve 9, so that the ratio of the volume of each cavity 8 to the volume of the annular cavity 6 is 10:1. Therefore, the volume of the annular cavity 6 is smaller than the volume of the cavity 8. Therefore, the lubricating oil discharged into the annular cavity 6 through the one-way valve 9 will quickly fill the annular cavity 6. 2. With the continuous extrusion of the ball pin 2, the lubricating oil in the annular cavity 6 will be discharged through each output hole 7. Therefore, the lubricating oil discharged from the output hole 7 will impact the inner wall of the protective sleeve 4, and part of the lubricating oil impacts the top wall of the annular groove 11, and drives the part above the top wall of the groove 11 to shake. Under the action of the connecting rope 12, the tops and bottoms of multiple grooves 11 are driven to shake, thereby enhancing the shaking effect. At the same time, the impact force is transmitted to the gravel attached to the outer wall of the protective sleeve 4. Since the output holes 7 are evenly arranged on the top wall of the annular cavity 6, for the part of the protective sleeve 4 that is not squeezed by the ball pin 2, the dents on its surface are in an open state, and the gravel in the part of the dent can be dropped by the impact force. For the gravel in the dent in the squeezed state, the gravel can be moved in the direction away from the protective sleeve 4 by the impact force to prevent the dent from further deepening. Therefore, the outer wall of the protective sleeve 4 can be automatically cleaned to prevent the gravel from being stuck in the dent on the surface of the protective sleeve 4, thereby preventing the dent from deepening, thereby ensuring the sealing and buffering effect of the protective sleeve 4.

[0033] When the ball pin 2 is reset and reversed, the squeezed cavity 8 gradually recovers, so the cavity 8 is in a negative pressure state. When the ball pin 2 is out of contact with the feed port 10 on the elastic ring 5, under the action of the one-way valve 9, the cavity 8 in the negative pressure state sucks part of the lubricating oil in the ball seat into it through the feed port 10, thereby preparing for being squeezed again.

[0034] Since grease is generally assembled by applying, and in the low temperature environment of winter, the base oil viscosity of the grease increases, resulting in a decrease in overall fluidity. Therefore, the part of the lubricating oil in the ball socket that is not directly in contact with the ball stud 2 will find it difficult to contact the ball stud 2 through active flow, so that the ball stud 2 is always in contact with a certain part of the lubricating oil. As time goes by, the lubricating effect of the lubricating oil in contact with the ball stud 2 gradually weakens, and the lubricating effect on the ball stud 2 becomes worse. Therefore, by squeezing the cavity 8 during the rotation of the ball stud 2, the lubricating oil in the ball socket can be driven to flow, and then the lubricating oil in the ball socket can be in contact with the ball stud 2, thereby improving the utilization rate of the lubricating oil and improving the lubricating effect on the ball stud 2.

[0035] Furthermore, by placing the elastic ring 5 in the lubricating oil, the degree of wear of the elastic ring 5 can be reduced when the ball stud 2 squeezes the elastic ring 5 , thereby preventing the elastic ring 5 from breaking.

[0036] like Figure 4 , Figure 8 As shown, by adopting the above technical solution, the shaking mechanism includes negative pressure holes 13 opened on the top wall of the groove 11, and the negative pressure holes 13 are evenly distributed on the top wall of the groove 11.

[0037] When the protective sleeve 4 is squeezed, the top wall and bottom wall of the groove 11 at the squeezed part fit together, and the negative pressure hole 13 is adsorbed together with the bottom wall of the groove 11. When the squeezed part is restored, the negative pressure hole 13 is forcibly pulled away from the bottom wall of the groove 11. During the pulling process, the top wall and bottom wall of the groove 11 can be driven to shake, that is, the protective sleeve 4 can be driven to shake, and the gravel on the surface of the protective sleeve 4 and in the dent can be shaken off, which plays a role in improving the cleaning effect of the surface of the protective sleeve 4. At the same time, the lubricating oil attached to the inner wall of the protective sleeve 4 can be shaken off during the shaking process, which plays a role in ensuring that the lubricating oil can fall normally.

[0038] Here, the negative pressure hole 13 is forcibly pulled away from the bottom wall of the groove 11 to cause the bottom wall of the groove 11 to vibrate, which is the same principle as pulling the suction cup off the surface of the adsorbent to cause the adsorbent and the suction cup itself to vibrate, so it will not be repeated.

[0039] like Figure 5 As shown, a first elastic rope 14 is horizontally fixedly installed in the negative pressure hole 13 , and a first impact block 15 made of elastic material is installed on the first elastic rope 14 .

[0040] By adopting the above technical scheme, when the negative pressure hole 13 is pulled away from the bottom wall of the groove 11, the negative pressure hole 13 shakes together with the top wall of the groove 11, and during the shaking process, the first elastic rope 14 drives the first impact block 15 to shake. At this time, the first impact block 15 hits the side wall of the negative pressure hole 13, thereby improving the shaking effect of the protective sleeve 4, and at the same time, enabling the lubricating oil in the negative pressure hole 13 to adhere to the first impact block 15, and then as the first impact block 15 swings, the lubricating oil on the surface of the first impact block 15 is thrown off and falls onto the surface of the ball pin 2, thereby improving the lubrication effect on the ball pin 2.

[0041] like Figure 7 As shown, a through hole 16 is provided on the first impact block 15, and the first elastic rope 14 passes through the through hole 16 and slidably cooperates with the first impact block 15. During the shaking process of the first elastic rope 14, the first impact block 15 slides on the surface of the first elastic rope 14, and the surface of the first elastic rope 14 is evenly provided with anti-slip grooves 17, so that heat can be generated during the sliding process of the first impact block 15 to heat the first impact block 15, thereby increasing the fluidity of the lubricating oil on the surface of the first impact block 15, and ensuring that the lubricating oil on the surface of the first impact block 15 can be thrown off; and the friction between the first impact block 15 and the first elastic rope 14 is increased, thereby improving the heat generation effect during the sliding process of the first impact block 15.

[0042] like Figure 4 As shown, four second elastic ropes 18 are evenly installed between the inner wall of the protective sleeve 4 and the control arm body 1 , and a second impact block 19 is fixedly installed on the second elastic rope 18 . The second impact block 19 is used to impact the inner wall of the protective sleeve 4 .

[0043] By adopting the above technical solution, when the protective sleeve 4 is squeezed by the pin shaft of the ball stud 2, the dented portion of the squeezed portion on the surface of the protective sleeve 4 is in a closed state, the gravel in the dented portion is difficult to discharge, and the second elastic rope 18 is in a loose state.

[0044] When the ball stud 2 is in a vertical state, under the action of the second elastic rope 18 , the second impact block 19 contacts the inner wall of the protective sleeve 4 and applies pressure to the inner wall of the second protective sleeve 4 .

[0045] When the ball pin 2 is reset, the squeezed part of the protective sleeve 4 is reset. During the reset process of this part, the dent closed by squeezing opens, and the loose second elastic rope 18 located at this part is quickly straightened, so that the second impact block 19 can be driven to hit the inner wall of the protective sleeve 4 during the straightening of the second elastic rope 18. The impact force generated at this time can eject the gravel in the open dent, thereby improving the cleaning effect of the gravel in the dent on the surface of the protective sleeve 4.

[0046] like Figure 6As shown, a cavity 20 is formed on the second impact block 19 , and an air hole 21 is formed on the side wall of the cavity 20 . The air hole 21 is located on the side wall of the cavity 20 close to the ball stud 2 .

[0047] By adopting the above technical solution, when the second impact block 19 hits the protective sleeve 4, the second impact block 19 is also deformed under the action of the reaction force. At this time, the cavity 20 on the second impact block 19 exhausts air outward through the air hole 21, and the gas discharged from the air hole 21 impacts the surface of the pin shaft of the ball stud 2, so that the lubricating oil attached to the surface of the pin shaft of the ball stud 2 can be blown downward, which ensures that the gap between the ball stud 2 and the ball seat can be filled with lubricating oil, ensures the lubrication effect between the ball stud 2 and the ball seat, and at the same time ensures that the feed port 10 can absorb a sufficient amount of lubricating oil, which ensures that the output hole 7 can drain oil normally.

[0048] like Figure 4 As shown, the protective sleeve 4, the first impact block 15 and the second impact block 19 are all made of rubber material.

[0049] By adopting the above technical solution, since both the first impact block 15 and the second impact block 19 need to apply impact force to the protective cover 4, and then drive the protective cover 4 to shake through the impact force, the protective cover 4, the first impact block 15, and the second impact block 19 are made of the same material, which ensures that the protective cover 4 can shake when impacted, and the first impact block 15 and the second impact block 19 can vibrate at the same time.

[0050] like Figure 4 As shown, a diaphragm 22 made of elastic material is installed in the negative pressure hole 13 , holes are opened on the surface of the diaphragm 22 , and a semi-permeable membrane 23 is installed in the holes.

[0051] By adopting the above technical solution, during the squeezing of the negative pressure hole 13, the gas in the space between the diaphragm 22 and the top wall of the negative pressure hole 13 passes through the semipermeable membrane 23. At this time, the discharged gas flows out along the gap between the top wall and the bottom wall of the groove 11, thereby cleaning the area around the negative pressure hole 13, thereby ensuring that the negative pressure hole 13 on the top wall of the groove 11 can be adsorbed on the bottom wall of the groove 11.

[0052] Lubricating oil is a viscous liquid with a large molecular weight and cannot pass through the tiny pores of the semipermeable membrane 23. Therefore, only gas is discharged through the semipermeable membrane 23, which ensures that the top and bottom walls of the groove 11 near the negative pressure hole 13 can be cleaned.

[0053] Usage: During installation, grease is loaded into the ball seat as lubricant, and the ball pin 2 is lubricated by the lubricant; since the suspension bushing 3 of the automobile control arm is installed on the subframe, and the ball pin 2 is connected to the steering knuckle, the control arm body 1 will swing around the center of the suspension bushing 3 during the driving of the vehicle. Since the ball pin 2 includes a ball head and a pin shaft, the ball head of the ball pin 2 rotates in the ball seat during the swinging process of the ball pin 2, and the pin shaft rotates with the ball head. At this time, the protective sleeve 4 rotates close to the ball pin 2. The side wall and the elastic ring 5 in the moving direction will be squeezed by the rotating pin shaft. At this time, the protective sleeve 4 made of elastic material will be compressed. At the same time, the feed port 10 will contact the pin shaft. At this time, the lubricating oil in the cavity 8 on the squeezed elastic ring 5 will be discharged into the annular cavity 6 through the one-way valve 9, so that the volume ratio of each cavity 8 to the volume of the annular cavity 6 is 10:1. Therefore, the volume of the annular cavity 6 is smaller than the volume of the cavity 8. Therefore, the lubricating oil discharged into the annular cavity 6 through the one-way valve 9 will quickly fill the annular cavity 6. As the ball head pin 2 is With the continuous extrusion of the shaft, the lubricating oil in the annular cavity 6 will be discharged through each output hole 7. Therefore, the lubricating oil discharged from the output hole 7 will impact the inner wall of the protective sleeve 4, and part of the lubricating oil will impact the top wall of the annular groove 11, and drive the part above the top wall of the groove 11 to shake. Under the action of the connecting rope 12, the tops and bottoms of multiple grooves 11 are driven to shake, thereby enhancing the shaking effect. At the same time, the impact force is transmitted to the gravel attached to the outer wall of the protective sleeve 4. Since the output holes 7 are evenly arranged on the top wall of the annular cavity 6, for the part of the protective sleeve 4 that is not squeezed by the ball stud 2, the dents on its surface are in an open state, and the gravel in the part of the dent can be dropped by the impact force. For the gravel in the dent in the squeezed state, the gravel can be moved in the direction away from the protective sleeve 4 by the impact force to prevent the dent from further deepening. Therefore, the outer wall of the protective sleeve 4 can be automatically cleaned to prevent the gravel from being stuck in the dent on the surface of the protective sleeve 4, thereby preventing the dent from being worn more deeply, thereby ensuring the sealing and buffering effect of the protective sleeve 4.

[0054] When the ball pin 2 is reset and reversed, the squeezed cavity 8 gradually recovers, so the cavity 8 is in a negative pressure state. When the ball pin 2 is out of contact with the elastic ring 5, under the action of the one-way valve 9, the cavity 8 in the negative pressure state sucks part of the lubricating oil in the ball seat into it through the feed port 10, thereby preparing for being squeezed again.

[0055] Since the grease is generally assembled by spreading, and in the low temperature environment of winter, the base oil viscosity of the grease increases, resulting in a decrease in overall fluidity, the lubricating oil in the ball seat that is not directly in contact with the ball stud 2 will be difficult to contact with the ball stud 2 through active flow, so that the ball stud 2 is always in contact with a certain part of the lubricating oil. As time goes by, the lubricating effect of the lubricating oil in contact with the ball stud 2 gradually weakens, and the lubricating effect on the ball stud 2 becomes worse; therefore, the lubricating oil in the ball seat can be driven to flow by squeezing the cavity 8 during the rotation of the ball stud 2, thereby The lubricating oil in the ball seat can all contact with the ball stud 2, thereby improving the utilization rate of the lubricating oil. When the protective sleeve 4 is squeezed, the top wall and the bottom wall of the groove 11 at the squeezed position fit together. At this time, the negative pressure hole 13 is adsorbed together with the bottom wall of the groove 11. When the squeezed position is restored, the negative pressure hole 13 is forcibly pulled apart from the bottom wall of the groove 11. During the pulling apart process, the top wall and the bottom wall of the groove 11 can be driven to vibrate, that is, the protective sleeve 4 is driven to vibrate, and the gravel on the surface of the protective sleeve 4 and the dent can be shaken off, thereby improving the cleaning effect of the surface of the protective sleeve 4. At the same time, the lubricating oil attached to the inner wall of the protective sleeve 4 can be shaken off during the shaking process; when the negative pressure hole 13 is pulled away from the bottom wall of the groove 11, the negative pressure hole 13 shakes together with the top wall of the groove 11, and during the shaking process, the first elastic rope 14 drives the first impact block 15 to shake. At this time, the first impact block 15 hits the side wall of the negative pressure hole 13, which improves the shaking effect of the protective sleeve 4, and at the same time can make the lubricating oil in the negative pressure hole 13 adhere to the first impact block 15, and then with the swing of the first impact block 15, the lubricating oil on the surface of the first impact block 15 is thrown off and falls onto the surface of the ball stud 2, thereby improving the lubrication effect on the ball stud 2.

[0056] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vehicle control arm for a new energy vehicle, comprising a control arm body (1), a ball seat being provided on the control arm body (1), lubricating oil being contained in the ball seat, a ball stud (2) being provided on the ball seat, and two suspension bushings (3) being symmetrically provided on the control arm body (1); Features: The ball stud (2) is sleeved with a protective sleeve (4) made of elastic material, and the protective sleeve (4) is connected to the surface of the control arm body (1); An elastic ring (5) is installed on the side wall of the ball seat, an annular cavity (6) is formed on the elastic ring (5), output holes (7) that match the inner wall of the protective sleeve (4) are evenly formed on the top wall of the annular cavity (6), cavities (8) are evenly formed on the elastic ring (5), the cavities (8) are located below the annular cavity (6), and a feed port (10) is formed on the side wall of each cavity (8) close to the ball stud (2), and a vibration mechanism is provided on the protective sleeve (4); The vibration mechanism comprises an annular groove (11) uniformly formed on the protective sleeve (4), the groove (11) cooperating with the output hole (7), and a shaking mechanism cooperating with the groove (11) is provided on the protective sleeve (4).

2. The vehicle control arm for new energy vehicles according to claim 1, characterized in that: A one-way valve (9) whose output end is in communication with the annular cavity (6) is inserted on the top wall of each cavity (8).

3. The vehicle control arm for new energy vehicles according to claim 2, characterized in that: The shaking mechanism comprises negative pressure holes (13) formed on the top wall of the groove (11); the negative pressure holes (13) are evenly distributed circumferentially on the top wall of the groove (11).

4. The vehicle control arm for new energy vehicles according to claim 3, characterized in that: A first elastic rope (14) is fixedly installed horizontally in the negative pressure hole (13), a first impact block (15) is installed on the first elastic rope (14), and the first impact block (15) is made of elastic material.

5. The vehicle control arm for new energy vehicles according to claim 4, characterized in that: The first impact block (15) is provided with a through hole (16), the first elastic rope (14) passes through the through hole (16), the first impact block (15) is slidably mounted on the first elastic rope (14), and the surface of the first elastic rope (14) is evenly provided with anti-slip grooves (17).

6. The vehicle control arm for new energy vehicles according to claim 5, characterized in that: Four second elastic ropes (18) are evenly installed between the inner wall of the protective sleeve (4) and the control arm body (1), and a second impact block (19) is fixedly installed on the second elastic rope (18), and the second impact block (19) is used to impact the inner wall of the protective sleeve (4).

7. The vehicle control arm for new energy vehicles according to claim 6, characterized in that: The second impact block (19) is provided with a cavity (20), and a pore (21) is provided on a side wall of the cavity (20). The pore (21) is located on the side wall of the cavity (20) close to the ball stud (2).

8. The vehicle control arm for new energy vehicles according to claim 7, characterized in that: The protective sleeve (4), the first impact block (15), and the second impact block (19) are all made of the same elastic material.

9. The vehicle control arm for new energy vehicles according to claim 1, characterized in that: A connecting rope (12) is installed between the top wall and the bottom wall of the groove (11).

10. The vehicle control arm for new energy vehicles according to claim 8, characterized in that: A diaphragm (22) is installed in the negative pressure hole (13), a hole is provided on the surface of the diaphragm (22), and a semi-permeable membrane (23) is installed in the hole.

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