A convenient lubrication system for outer ball cage of drive shaft

Abstract

The utility model belongs to the technical field of automobile transmission system, concretely relates to a drive axle outer ball cage convenient lubricating system, this drive axle outer ball cage convenient lubricating system, including the bell -shaped shell, the surface fixedly connected with the first cylinder of bell -shaped shell, the surface fixedly connected with the bearing of first cylinder, the outer ring fixedly connected with the first U -shaped plate of bearing, the surface of first cylinder is seted up with the square hole, the surface of bell -shaped shell is seted up with the grease hole, the surface of first cylinder is seted up with the partition ring, the surface fixedly connected with the second cylinder of partition ring. This drive axle outer ball cage convenient lubricating system passes through bell -shaped shell, first cylinder, square hole, grease hole, partition ring, second cylinder, three -way pipe, sealing cover and the cooperation of limit ring, make maintenance personnel three -way pipe to be directly injected with the lubricating grease to bell -shaped shell, further in the lubricating operation process, need not to dismount the dust cover outside bell -shaped shell, make the lubricating operation process more simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive transmission systems, specifically relating to a convenient lubrication system for the outer ball cage of a drive shaft. Background Technology

[0002] In automotive transmission systems, the drive shaft outer CV joint is the core component that transmits power from the gearbox to the wheels. It integrates key moving parts such as bell housing, star sleeve, cage, and steel balls. These parts need to rotate continuously at high speed and bear large loads during vehicle operation. Therefore, they must rely on grease for lubrication to reduce friction and wear, reduce operating noise, prevent component corrosion, and ultimately ensure the transmission efficiency and service life of the drive shaft.

[0003] However, when maintenance personnel perform lubrication work inside the drive shaft outer CV joint, they must first use tools to remove the dust cover on the outside of the bell housing before they can fill the inside of the bell housing with grease. This makes the lubrication process cumbersome, increasing the difficulty and time required. In addition, during the process of removing the dust cover, improper operation can easily cause the dust cover to deform or crack, or damage the outer sealing surface of the bell housing. When the dust cover is reinstalled, if the seal is not tight enough, external dust, moisture and other impurities will still enter the inside of the bell housing, contaminating the grease, damaging the lubrication environment, and thus accelerating the wear of the key moving parts of the drive shaft outer CV joint, shortening its service life, and also increasing the repair rate and cost. Utility Model Content

[0004] The purpose of this invention is to provide a convenient lubrication system for the outer ball joint of a drive shaft, which solves the problem that in the existing lubrication operation of the outer ball joint of the drive shaft, the external dust cover of the bell-shaped housing must be removed before lubrication can be performed, resulting in cumbersome operation steps, increased difficulty and long time consumption.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A convenient lubrication system for an outer ball cage of a drive shaft includes a bell-shaped housing. A first cylinder is fixedly connected to the surface of the bell-shaped housing. A bearing is fixedly connected to the surface of the first cylinder. A first U-shaped plate is fixedly connected to the outer ring of the bearing. A square hole is formed on the surface of the first cylinder. A grease injection hole is formed on the surface of the bell-shaped housing. A separator ring is fitted onto the surface of the first cylinder. A second cylinder is fixedly connected to the surface of the separator ring. A tee pipe is fixedly connected to the front of the second cylinder. A second U-shaped plate is fixedly connected to the surface of both the tee pipe and the front of the first U-shaped plate. A sealing cap is threaded onto the surface of the tee pipe. Limiting rings are fitted to the left and right sides of the second cylinder. The inner wall of the limiting ring is fixedly connected to the surface of the first cylinder.

[0007] The present invention is further configured such that the square hole is aligned with the grease injection hole, and the length and width of the square hole are both greater than the diameter of the grease injection hole, and the separator ring is located between the limiting ring and the square hole.

[0008] The present invention is further configured such that a retaining ring is fixedly connected to the surface of the second cylinder, and a sealing ring is sleeved on the surface of the second cylinder, wherein the left and right sides of the sealing ring are respectively attached to the side of the limiting ring and the side of the retaining ring.

[0009] The present invention is further configured such that the inner wall of the bell-shaped shell is provided with an arc-shaped groove, the inside of the bell-shaped shell is provided with a star-shaped sleeve, the surface of the star-shaped sleeve is provided with a retainer, the inner wall of the arc-shaped groove, the surface of the star-shaped sleeve and the inner wall of the retainer are all slidably connected with steel balls, the inner wall of the star-shaped sleeve is provided with a mandrel, the surface of the mandrel and the surface of the bell-shaped shell are both provided with dust covers, and the surface of the dust covers is provided with a first clamp and a second clamp.

[0010] The present invention is further configured such that an elastic rubber sleeve is fitted on the surface of the first cylinder, a circular hole is formed inside the elastic rubber sleeve, a ring is bonded to the inner wall of the circular hole, a cylinder is slidably connected to the inner wall of the ring, the surface of the cylinder is fixedly connected to the inner wall of the grease injection hole, and a grease injection groove is formed on the surface of the cylinder.

[0011] The present invention is further configured such that the elasticity of the elastic rubber sleeve is greater than the weight of the ring, and the length and width of the square hole are both greater than the diameter of the outer surface of the ring.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This utility model discloses a convenient lubrication system for the outer ball joint of a drive shaft. Through the cooperation of a bell-shaped shell, a first cylinder, a square hole, a grease injection hole, a separator ring, a second cylinder, a three-way pipe, a sealing cap, and a limiting ring, maintenance personnel can directly inject grease into the bell-shaped shell through the three-way pipe. Thus, during the lubrication operation, there is no need to remove or install the dust cover on the outside of the bell-shaped shell, making the lubrication operation more convenient. At the same time, after the first U-shaped plate is fixed on the steering knuckle, the cooperation of the first U-shaped plate, the second U-shaped plate, and the bearing prevents the three-way pipe from rotating with the bell-shaped shell, thus keeping the three-way pipe in an easily operable position so that maintenance personnel can easily inject grease into the three-way pipe.

[0014] This utility model discloses a convenient lubrication system for the outer ball cage of a drive shaft. Through the cooperation of an elastic rubber sleeve, round holes, rings, cylinders, and grease injection grooves, the grease is evenly distributed into the bell-shaped housing through each grease injection hole, thereby ensuring that the grease is fully lubricated within the bell-shaped housing. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a front view of the structure of this utility model;

[0018] Figure 4 This is a front view of the first cylinder in this utility model;

[0019] Figure 5 yes Figure 4 Sectional view at point BB;

[0020] Figure 6 yes Figure 5 Enlarged view at point C;

[0021] Figure 7 This is a top view of the second cylinder in this utility model;

[0022] Figure 8 This is a schematic diagram of the cylinder in this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Bell-shaped shell; 2. First cylinder; 3. Bearing; 4. First U-shaped plate; 5. Square hole; 6. Grease injection hole; 7. Separator ring; 8. Second cylinder; 9. T-pipe; 10. Second U-shaped plate; 11. Sealing cap; 12. Limiting ring; 13. Retaining ring; 14. Sealing ring; 15. Arc groove; 16. Star-shaped sleeve; 17. Cage; 18. Steel ball; 19. Mandrel; 20. Dust cover; 21. First clamp; 22. Second clamp; 23. Elastic rubber sleeve; 24. Round hole; 25. Circular ring; 26. Cylindrical shaft; 27. Grease injection groove. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] like Figures 1 to 7As shown, a convenient lubrication system for an outer ball cage of a drive shaft includes a bell-shaped shell 1. A first cylinder 2 is fixedly connected to the surface of the bell-shaped shell 1. A bearing 3 is fixedly connected to the surface of the first cylinder 2. A first U-shaped plate 4 is fixedly connected to the outer ring of the bearing 3. A square hole 5 is opened on the surface of the first cylinder 2. A grease injection hole 6 is opened on the surface of the bell-shaped shell 1. A partition ring 7 is sleeved on the surface of the first cylinder 2. A second cylinder 8 is fixedly connected to the surface of the partition ring 7. A three-way pipe 9 is fixedly connected to the front of the second cylinder 8. A second U-shaped plate 10 is fixedly connected to the surface of both the three-way pipe 9 and the front of the first U-shaped plate 4. A sealing cap 11 is threadedly connected to the surface of the three-way pipe 9. Limiting rings 12 are fitted to the left and right sides of the second cylinder 8. The inner wall of the limiting ring 12 is fixedly connected to the surface of the first cylinder 2.

[0028] The square hole 5 is aligned with the grease injection hole 6, and the length and width of the square hole 5 are both greater than the diameter of the grease injection hole 6. The separator ring 7 is located between the limiting ring 12 and the square hole 5.

[0029] A retaining ring 13 is fixedly connected to the surface of the second cylinder 8, and a sealing ring 14 is sleeved on the surface of the second cylinder 8. The left and right sides of the sealing ring 14 are respectively attached to the side of the limiting ring 12 and the side of the retaining ring 13.

[0030] The inner wall of the bell-shaped shell 1 is provided with an arc-shaped groove 15. A star-shaped sleeve 16 is provided inside the bell-shaped shell 1. A retainer 17 is provided on the surface of the star-shaped sleeve 16. Steel balls 18 are slidably connected to the inner wall of the arc-shaped groove 15, the surface of the star-shaped sleeve 16, and the inner wall of the retainer 17. A mandrel 19 is provided on the inner wall of the star-shaped sleeve 16. Dustproof sleeves 20 are provided on the surface of the mandrel 19 and the surface of the bell-shaped shell 1. A first clamp 21 and a second clamp 22 are provided on the surface of the dustproof sleeve 20.

[0031] It should be noted that the first U-shaped plate 4 is connected to the first cylinder 2 by the bearing 3, allowing the first cylinder 2 to rotate freely within the first U-shaped plate 4. A certain gap exists between the first cylinder 2 and the second cylinder 8 by the partition ring 7, and the first cylinder 2 can rotate freely within the partition ring 7. The second cylinder 8 is limited by the limiting ring 12. The tee pipe 9 is fixed to the first U-shaped plate 4 by the second U-shaped plate 10. After the first U-shaped plate 4 is fixed on the steering knuckle, the cooperation of the first U-shaped plate 4, the second U-shaped plate 10 and the bearing 3 prevents the tee pipe 9 from rotating with the bell-shaped shell 1, thus keeping the tee pipe 9 in an easy-to-operate position so that maintenance personnel can inject grease into the tee pipe 9.

[0032] The end of the tee pipe 9 is sealed by the sealing cap 11. When the maintenance personnel unscrew the sealing cap 11 from the tee pipe 9 and inject grease into the tee pipe 9, the grease will enter the bell-shaped shell 1 in sequence through the second cylinder 8, the rectangular cylinder and the grease injection hole 6.

[0033] After the sealing ring 14 is fitted onto the second cylinder 8, the retaining ring 13 limits the sealing ring 14 and seals the contact surface between the second cylinder 8 and the limiting ring 12, thereby preventing the grease inside the second cylinder 8 from leaking out from the contact surface between the second cylinder 8 and the limiting ring 12.

[0034] The spindle 19 and the star sleeve 16 are connected by a spline drive. When the spindle 19 rotates, it drives the star sleeve 16 to rotate through the spline. At the same time, the spindle 19 can slide along the axial direction inside the star sleeve 16.

[0035] like Figures 1 to 8 As shown, the surface of the first cylinder 2 is fitted with an elastic rubber sleeve 23, the inside of the elastic rubber sleeve 23 is provided with a circular hole 24, the inner wall of the circular hole 24 is bonded with a circular ring 25, the inner wall of the circular ring 25 is slidably connected with a cylinder 26, the surface of the cylinder 26 is fixedly connected to the inner wall of the grease injection hole 6, and the surface of the cylinder 26 is provided with a grease injection groove 27.

[0036] Among them, the elasticity of the elastic rubber sleeve 23 is greater than the weight of the ring 25, and the length and width of the square hole 5 are both greater than the diameter of the outer surface of the ring 25.

[0037] It should be noted that when the pressure of the grease in the second cylinder 8 on the elastic rubber sleeve 23 is less than the elastic force of the elastic rubber sleeve 23, the elasticity of the elastic rubber sleeve 23 causes the ring 25 to be misaligned with the grease injection groove 27. At this time, the grease in the second cylinder 8 cannot enter the square hole 5. When the second cylinder 8 is filled with grease and the pressure of the grease on the elastic rubber sleeve 23 at each square hole 5 reaches the specified value, the pressure of the grease on the elastic rubber sleeve 23 causes the grease injection groove 27 to be exposed from the elastic rubber sleeve 23, and the grease is evenly distributed in the bell-shaped shell 1 through each grease injection hole 6, thereby ensuring that the parts in the bell-shaped shell 1 are fully lubricated.

[0038] The working principle of this utility model is as follows: The bell-shaped shell 1 and the first U-shaped plate 4 are both fixed to the steering knuckle. Since the first cylinder 2 can rotate freely within the first U-shaped plate 4 and the separating ring 7, the rotation of the bell-shaped shell 1 is not affected. When injecting grease into the bell-shaped shell 1, the sealing cap 11 is first unscrewed from the three-way pipe 9, and the grease is injected into the second cylinder 8 through the three-way pipe 9. At this time, since the pressure of the grease in the second cylinder 8 on the elastic rubber sleeve 23 is less than the elastic force of the elastic rubber sleeve 23, the elasticity of the elastic rubber sleeve 23 causes the ring 25 to be misaligned with the grease injection groove 27, and the first... The grease inside the second cylinder 8 cannot enter the square hole 5. When the second cylinder 8 is filled with grease and the pressure of the grease on the elastic rubber sleeve 23 at each square hole 5 reaches the specified value, the grease groove 27 is exposed from the elastic rubber sleeve 23 by the pressure of the grease on the elastic rubber sleeve 23, and the grease is evenly distributed in the bell-shaped shell 1 through each grease injection hole 6, so that the grease is evenly distributed in the bell-shaped shell 1, ensuring that the parts in the bell-shaped shell 1 are fully lubricated. After the grease is injected, the sealing cap 11 is screwed on the three-way pipe 9 and the end of the three-way pipe 9 is sealed by the sealing cap 11.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A convenient lubrication system for the outer ball cage of a drive shaft, characterized in that: The device includes a bell-shaped shell (1), a first cylinder (2) fixedly connected to the surface of the bell-shaped shell (1), a bearing (3) fixedly connected to the surface of the first cylinder (2), a first U-shaped plate (4) fixedly connected to the outer ring of the bearing (3), a square hole (5) opened on the surface of the first cylinder (2), a grease injection hole (6) opened on the surface of the bell-shaped shell (1), a partition ring (7) sleeved on the surface of the first cylinder (2), a second cylinder (8) fixedly connected to the surface of the partition ring (7), a three-way pipe (9) fixedly connected to the front of the second cylinder (8), a second U-shaped plate (10) fixedly connected to the surface of the three-way pipe (9) and the front of the first U-shaped plate (4), a sealing cap (11) threadedly connected to the surface of the three-way pipe (9), and limit rings (12) fitted to the left and right sides of the second cylinder (8), with the inner wall of the limit ring (12) fixedly connected to the surface of the first cylinder (2).

2. The convenient lubrication system for the outer ball cage of a drive shaft according to claim 1, characterized in that: The square hole (5) is aligned with the grease injection hole (6), and the length and width of the square hole (5) are both greater than the diameter of the grease injection hole (6). The separator ring (7) is located between the limiting ring (12) and the square hole (5).

3. The convenient lubrication system for the outer ball cage of a drive shaft according to claim 1, characterized in that: A retaining ring (13) is fixedly connected to the surface of the second cylinder (8), and a sealing ring (14) is sleeved on the surface of the second cylinder (8). The left and right sides of the sealing ring (14) are respectively attached to the side of the limiting ring (12) and the side of the retaining ring (13).

4. The convenient lubrication system for the outer ball cage of a drive shaft according to claim 1, characterized in that: The bell-shaped shell (1) has an arc-shaped groove (15) on its inner wall. A star-shaped sleeve (16) is provided inside the bell-shaped shell (1). A retainer (17) is provided on the surface of the star-shaped sleeve (16). Steel balls (18) are slidably connected to the inner wall of the arc-shaped groove (15), the surface of the star-shaped sleeve (16), and the inner wall of the retainer (17). A mandrel (19) is provided on the inner wall of the star-shaped sleeve (16). A dust cover (20) is provided on the surface of the mandrel (19) and the surface of the bell-shaped shell (1). A first clamp (21) and a second clamp (22) are provided on the surface of the dust cover (20).

5. The convenient lubrication system for the outer ball cage of a drive shaft according to claim 1, characterized in that: The surface of the first cylinder (2) is fitted with an elastic rubber sleeve (23), and the inside of the elastic rubber sleeve (23) is provided with a circular hole (24). A circular ring (25) is bonded to the inner wall of the circular hole (24), and a cylinder (26) is slidably connected to the inner wall of the circular ring (25). The surface of the cylinder (26) is fixedly connected to the inner wall of the grease injection hole (6), and a grease injection groove (27) is provided on the surface of the cylinder (26).

6. The convenient lubrication system for the outer ball cage of a drive shaft according to claim 5, characterized in that: The elasticity of the elastic rubber sleeve (23) is greater than the weight of the ring (25), and the length and width of the square hole (5) are both greater than the diameter of the outer surface of the ring (25).

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