An internally injected balance bar assembly

Abstract

This application relates to an internally inflated balance bar assembly, belonging to the field of automotive parts technology. It includes a bar body and ball housings located at both ends of the bar body. Ball pins are rotatably connected inside the ball housings. An oil reservoir is provided inside the bar body, containing lubricating oil. The end of the oil reservoir communicates with the inner wall of the ball housing through an oil injection hole. A piston is slidably connected inside the oil reservoir, and a U-shaped rod is fixed to the piston. The outer wall of the bar body has a groove for the U-shaped rod to slide through. An external thread is provided on the outer wall of the bar body, and an adjusting nut is threaded onto the external thread. A rotating ring is rotatably connected to the adjusting nut. The end of the U-shaped rod outside the bar body is fixed to the rotating ring. By rotating the adjusting nut, the piston moves towards the ball housing via the U-shaped rod, squeezing an appropriate amount of lubricating oil from the oil reservoir into the ball housing through the oil injection hole, thereby restoring good lubrication conditions to the ball head. The oil injection method is simple and quick, requiring no disassembly of components or special tools, thus improving the speed of maintenance and repair.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to an internally oiled balance bar assembly. Background Technology

[0002] A stabilizer bar is an automotive component that connects the rear axle to the chassis, enabling the rear axle and chassis to maintain a relatively stable position. When the vehicle body sways, the stabilizer bar can generate a force opposite to the sway by twisting, thereby reducing the amplitude of the sway.

[0003] A utility model patent with publication number CN205601543U discloses a balance bar, including a metal rod and two connectors. The surface of the metal rod is chrome-plated. The connectors are barrel-shaped with internal cavities. An annular connecting groove is formed on one outer end of the connector, and a ceramic bearing is embedded in the connecting groove. The connectors are connected to both ends of the metal rod via the ceramic bearings. A piston cylinder is provided inside the connector, and a shock-absorbing pad is provided at the bottom of the barrel. The connectors are fixedly connected to the piston cylinder. A piston rod is slidably connected to the piston cylinder, and a pressure regulating valve is provided on the piston cylinder, which penetrates the interior of the connector. The piston rod passes through the shock-absorbing pad, and a sealing ring is provided between the piston rod and the shock-absorbing pad. A nut is threaded to the end of the piston rod.

[0004] The stabilizer bar described above is a typical automotive stabilizer bar. The ball joint and the ball housing in the stabilizer bar require lubrication. As the usage time increases, the lubricating oil is consumed or lost, causing dry friction, noise, and poor movement. The existing lubrication method requires special tools or removal of the dust cover at the ball joint, which is inconvenient. Utility Model Content

[0005] This application provides an internally oiled balance bar assembly that can be oiled without special tools or removing the dust cover at the ball joint, making it easy to operate.

[0006] This application provides an internally oiled balance bar assembly, which adopts the following technical solution: An internally inflated balance bar assembly includes a bar body and spherical shells located at both ends of the bar body. A ball pin is rotatably connected inside the spherical shell. An oil reservoir is provided inside the bar body, containing lubricating oil. The end of the oil reservoir communicates with the inner wall of the spherical shell through an oil injection hole. A piston is slidably connected inside the oil reservoir. A U-shaped rod is fixed to the piston. A strip-shaped groove is provided on the outer wall of the bar body for the U-shaped rod to slide through. An external thread is provided on the outer wall of the bar body, with an adjusting nut threadedly connected to the external thread. A rotating ring is rotatably connected to the adjusting nut. The end of the U-shaped rod located outside the bar body is fixed to the rotating ring.

[0007] By adopting the above technical solution, the adjusting nut is moved towards the nearest ball shell. The adjusting nut drives the piston to move towards the ball shell through the U-shaped rod, and an appropriate amount of lubricating oil in the oil storage channel is squeezed into the ball shell through the oil injection hole, so that the ball head can restore good lubrication conditions.

[0008] Optionally, the rod is divided into two sections in the middle, and the oil storage channel and the strip groove penetrate the section of the rod in a direction away from the spherical shell.

[0009] By adopting the above technical solution, it is convenient to open the oil storage channel and the strip groove, and it is also convenient to assemble the piston, U-shaped rod and rod body, which facilitates production.

[0010] Optionally, an intermediate block is provided between the two segments of the rod body, and a plug is integrally formed on both sides of the intermediate block. The plug is inserted into the oil storage channel and slides in contact with the oil storage channel. The intermediate block is welded and fixed to the rod body.

[0011] By adopting the above technical solution, the two rods are connected and fixed in sections by the intermediate block. The insertion rod is used for positioning on the one hand, and on the other hand, it greatly increases the overall rigidity of the rod and avoids deformation.

[0012] Optionally, the side wall of the insertion rod is provided with a guide groove for the U-shaped rod to slide.

[0013] By adopting the above technical solution, the sliding stability of the insertion rod is improved through the guide groove.

[0014] Optionally, the outer edge of the rod and the intermediate block is chamfered, and the two chamfers form a welding groove.

[0015] By adopting the above technical solution, a stable weld can be easily formed through the welding groove, thereby improving the fixing strength between the intermediate block and the rod.

[0016] Optionally, two U-shaped rods are symmetrically arranged along the circumference of the rod body, and the piston is fixed to both U-shaped rods simultaneously.

[0017] By adopting the above technical solution, the piston moves under the symmetrical thrust of the two U-shaped rods, making the piston movement stable and less prone to tilting or jamming, thus improving the stability of adjustment.

[0018] Optionally, the external threaded portion is further threaded with a lock nut, the end face of which abuts against the adjusting nut.

[0019] By adopting the above technical solution, the anti-loosening nut and the adjusting nut are pressed together, which can prevent the adjusting nut from loosening and prevent it from rotating on its own.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. By rotating the adjusting nut, the piston can be moved towards the ball shell via the U-shaped rod, and an appropriate amount of lubricating oil in the oil storage channel can be squeezed into the ball shell through the oil injection hole, thereby restoring good lubrication conditions to the ball head; 2. The oiling method is simple and quick, requiring no disassembly of components or special tools, which improves the speed of maintenance and repair. Attached Figure Description

[0021] Figure 1 This is a perspective view of an internally oiled balance bar assembly according to an embodiment; Figure 2 This is a partial cross-sectional view of an embodiment; Figure 3 This is a partial exploded view of an embodiment.

[0022] Explanation of reference numerals in the attached drawings: 1. Rod body; 2. Spherical shell; 3. Ball pin; 4. Intermediate block; 11. Oil reservoir; 12. Oil injection hole; 5. Piston; 51. U-shaped rod; 13. Strip groove; 14. External threaded part; 52. Adjusting nut; 53. Rotary ring; 41. Insert rod; 42. Guide groove; 43. Welding groove; 6. Anti-loosening nut. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1 This embodiment discloses an internally oiled balance bar assembly, including a bar body 1 and ball shells 2 located at both ends of the bar body 1. Ball pins 3 are rotatably connected inside the ball shells 2, and the two ball pins 3 are arranged in opposite directions. Each ball pin 3 includes a ball head located inside the ball shell 2. The bar body 1 is divided into two sections in the middle, and an intermediate block 4 is provided between the two sections of the bar body 1. The intermediate block 4 is welded and fixed to the two sections of the bar body 1 on both sides.

[0025] Reference Figure 2 and Figure 3 The rod body 1 is welded and fixed to the spherical shell 2. An oil reservoir 11 is provided inside the rod body 1, containing lubricating oil. The end of the oil reservoir 11 communicates with the inner wall of the spherical shell 2 through an oil injection hole 12. A piston 5, made of rubber, is slidably connected inside the oil reservoir 11. The piston 5 is slidably sealed to the inner wall of the oil reservoir 11, confining the lubricating oil within the oil reservoir 11 to the side near the oil injection hole 12.

[0026] The piston 5 is fixed with a U-shaped rod 51. The outer wall of the rod body 1 has a strip groove 13 through which the U-shaped rod 51 slides. The outer wall of the rod body 1 has an external threaded portion 14, which is threadedly connected to an adjusting nut 52. The adjusting nut 52 is rotatably connected to a rotating ring 53. The end of the U-shaped rod 51 located outside the rod body 1 is fixed to the rotating ring 53. When the adjusting nut 52 rotates, it moves axially through the threaded connection with the external threaded portion 14. Since the U-shaped rod 51 cannot rotate, a relative rotation occurs between the rotating ring 53 and the adjusting nut 52, which in turn pulls the U-shaped rod 51 to move. The U-shaped rod 51 drives the piston 5 to move towards the spherical shell 2, thereby squeezing the lubricating oil in the oil reservoir 11 into the spherical shell 2 through the oil injection hole 12. It should be noted that the diameter of the oil injection hole 12 is small. When the piston 5 is not moving, the lubricating oil will not spontaneously enter the spherical shell 2 through the oil injection hole 12 under atmospheric pressure.

[0027] The oil storage channel 11 and the strip groove 13 extend through the segment of the rod body 1 in a direction away from the spherical shell 2. This structure facilitates the opening of the oil storage channel 11 and the strip groove 13, and also facilitates the assembly of the piston 5, the U-shaped rod 51 and the rod body 1.

[0028] Both sides of the intermediate block 4 are integrally formed with insert rods 41. The insert rods 41 are inserted into the oil storage channel 11 and slide in contact with the oil storage channel 11. The intermediate block 4 is welded and fixed to the rod body 1. The side wall of the insert rod 41 is provided with a guide groove 42 for the U-shaped rod 51 to slide. The two rod bodies 1 are connected and fixed in sections by the intermediate block 4. The insert rod 41 is used for positioning and also greatly increases the overall rigidity of the rod body 1 to avoid deformation. The guide groove 42 improves the sliding stability of the insert rod 41.

[0029] Reference Figure 1 The outer edges of the rod body 1 and the intermediate block 4 are chamfered, and the two chamfers form a welding groove 43. The welding groove 43 facilitates the formation of a stable weld and improves the fixing strength between the intermediate block 4 and the rod body 1.

[0030] Reference Figure 2 and Figure 3 Two U-shaped rods 51 are symmetrically arranged along the circumference of the rod body 1. The piston 5 is fixed to both U-shaped rods 51. This structure ensures that the piston 5 moves smoothly under force, preventing tilting or jamming and improving the stability of adjustment. The external threaded part 14 is also threadedly connected to a lock nut 6. The end face of the lock nut 6 abuts against the adjusting nut 52. By tightening the lock nut 6, the adjusting nut 52 is pressed together, which prevents the adjusting nut 52 from loosening and avoids it from rotating on its own.

[0031] The implementation principle of an internal oil-filled balance bar assembly according to an embodiment of this application is as follows: After assembly, loosen the anti-loosening nut 6 and then rotate the adjusting nut 52 to move the adjusting nut 52 toward the nearest spherical shell 2. The adjusting nut 52 drives the piston 5 to move toward the spherical shell 2 through the U-shaped rod 51, squeezing an appropriate amount of lubricating oil in the oil storage channel 11 into the spherical shell 2 through the oil filling hole 12. After completion, tighten the anti-loosening nut 6.

[0032] When the stabilizer bar assembly experiences prolonged use and the ball joint lubrication becomes poor, inject an appropriate amount of lubricating oil into the ball housing 2 using the method described above to restore proper lubrication to the ball joint. The lubrication method for this stabilizer bar assembly is simple and quick, requiring no component disassembly or special tools, thus improving the speed of maintenance and repair.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An oil-impregnated balance lever assembly comprising a lever body (1), a spherical shell (2) located at both ends of the lever body (1), a spherical pin (3) rotatably connected in the spherical shell (2), characterized in that: The rod body (1) is provided with an oil storage channel (11), which contains lubricating oil. The end of the oil storage channel (11) is connected to the inner wall of the spherical shell (2) through an oil injection hole (12). A piston (5) is slidably connected in the oil storage channel (11). A U-shaped rod (51) is fixed to the piston (5). The outer wall of the rod body (1) is provided with a strip groove (13) through which the U-shaped rod (51) slides. The outer wall of the rod body (1) is provided with an external threaded part (14). An adjusting nut (52) is threadedly connected to the external threaded part (14). A rotating ring (53) is rotatably connected to the adjusting nut (52). The end of the U-shaped rod (51) located outside the rod body (1) is fixed to the rotating ring (53).

2. An internally lubricated balance shaft assembly as in claim 1, wherein: The rod (1) is divided into two sections from the middle, and the oil storage channel (11) and the strip groove (13) penetrate the section of the rod (1) in a direction away from the spherical shell (2).

3. An internally lubricated balance shaft assembly as in claim 2, wherein: A middle block (4) is provided between the two segments of the rod (1). Both sides of the middle block (4) are integrally formed with insert rods (41). The insert rods (41) are inserted into the oil storage channel (11) and slide in contact with the oil storage channel (11). The middle block (4) is welded and fixed to the rod (1).

4. The internally injected balance bar assembly according to claim 3, characterized in that: The side wall of the insertion rod (41) is provided with a guide groove (42) for sliding of the U-shaped rod (51).

5. The internally injected balance bar assembly according to claim 3, characterized in that: The outer wall edges of the rod (1) and the intermediate block (4) are chamfered, and the two chamfers form a welding groove (43).

6. The internally injected balance bar assembly according to claim 1, characterized in that: Two U-shaped rods (51) are symmetrically arranged along the circumference of the rod body (1), and the piston (5) is fixed to both U-shaped rods (51).

7. The internally injected balance bar assembly according to claim 1, characterized in that: The external threaded part (14) is also threadedly connected to a lock nut (6), the end face of which abuts against the adjusting nut (52).

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