Low torque light weight rod end ball joint

Abstract

The utility model belongs to the technical field of ball joint, specifically relates to a low torque light -duty rod end ball joint, this low torque light -duty rod end ball joint, including the casing, the surface threaded joint of casing has end cover, the inner wall of end cover is attached with upper ball seat and is attached with lower ball seat in the inner wall of casing, the inner wall of upper ball seat and the inner wall of lower ball seat are attached with ball head rod. This low torque light -duty rod end ball joint passes through the cooperation of liquid storage square section of thick bamboo, liquid inlet pipe, sealing plug, liquid pushing support, bolt, hollow block, first spring and connecting block, makes ball head rod can obtain sufficient and long -term lubrication, and then effectively reduces the wear and tear between this ball joint and ball head rod, simultaneously, through the cooperation of hollow rotating block, third limiting ring, fourth limiting ring, round hole, second spring, conical groove and steel ball, when the ball head rod is installed in this ball joint, the user is not easy to accelerate the wear and tear of ball head rod due to the pressure process of ball seat to ball head rod.

Description

Technical Field

[0001] This utility model belongs to the field of ball joint technology, specifically relating to a low-torque lightweight rod end ball joint. Background Technology

[0002] In numerous fields such as mechanical transmission, automotive suspension, and aerospace, the ball joint at the rod end serves as a critical connecting component, playing a vital role in achieving rotational connections and force transmission between different parts. Its performance directly affects the operational stability, service life, and overall work efficiency of the equipment.

[0003] However, in practical applications, traditional ball joints often rely on manual, periodic replenishment of lubricating oil to lubricate the ball head inside the joint. This is not only cumbersome but also makes it difficult to accurately control the amount and timing of lubricating oil replenishment. Consequently, the ball head often faces insufficient lubrication during long-term operation, leading to increased wear between the ball joint and the ball head.

[0004] Meanwhile, during the ball head installation process, because it is impossible to directly control the pressure of the ball head seat on the ball head inside the ball joint, the ball head often wears out due to excessive pressure from the ball head seat on the ball head. Utility Model Content

[0005] The purpose of this invention is to provide a low-torque, lightweight ball joint that can automatically and continuously provide sufficient lubrication to the ball head, effectively reducing wear between the ball joint and the ball head, while precisely limiting the pressure of the ball head seat on the ball head, thus preventing excessive wear due to improper pressure during installation.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A low-torque lightweight rod-end ball joint includes a housing, an end cap threaded to the surface of the housing, an upper ball seat fitted to the inner wall of the end cap, a lower ball seat fitted to the inner wall of the housing, and ball-head rods fitted to the inner walls of both the upper and lower ball seats. A through hole is provided at the bottom of the housing, and a liquid storage cylinder is fixedly connected to the bottom of the housing. An inlet pipe is fixedly connected to the left side of the liquid storage cylinder, and a sealing plug is threaded to the inner wall of the inlet pipe. A pusher bracket is fitted to the inner wall of the liquid storage cylinder, and a first and second limiting rings are fixedly connected to the inner wall of the liquid storage cylinder. A bolt is threaded to the inner wall of the pusher bracket, and a hollow block is fitted onto the surface of the bolt. A first spring is fixedly connected to the upper surface of the hollow block, and a connecting block is fixedly connected to the upper surface of the first spring. The left side of the connecting block is fixedly connected to the right side of the liquid storage cylinder.

[0008] The present invention is further configured such that the liquid-pushing support includes a liquid-pushing plate, a connecting column, a connecting plate and a nut, the surface of the liquid-pushing plate is in contact with the inner wall of the liquid storage cylinder, the bottom of the liquid-pushing plate is fixedly connected to the top of the connecting column, the bottom of the connecting column is fixedly connected to the upper surface of the connecting plate, the right side of the connecting plate is fixedly connected to the left side of the nut, and the inner wall of the nut is threadedly connected to the surface of the bolt.

[0009] The present invention is further configured such that the first limiting ring is located between the liquid pusher plate and the liquid inlet pipe, and the second limiting ring is located below the liquid pusher plate.

[0010] The present invention is further configured such that a hollow rotating block is fitted onto the surface of the end cap, a third limiting ring is fixedly connected to the surface of the end cap, the bottom of the third limiting ring is in contact with the upper surface of the hollow rotating block, a fourth limiting ring is fixedly connected to the surface of the end cap, the upper surface of the fourth limiting ring is in contact with the bottom of the hollow rotating block, a circular hole is opened inside the hollow rotating block, a second spring is arranged inside the circular hole, a conical groove is opened on the bottom of the third limiting ring and the upper surface of the fourth limiting ring, and steel balls are fixedly connected to the upper and lower sides of the second spring, and the inner wall of the conical groove and the inner wall of the circular hole are in contact with the surface of the steel balls.

[0011] The present invention is further configured such that the elastic force of the second spring is greater than the weight of the steel ball, and the axis of the second spring coincides with the center of the steel ball.

[0012] The present invention is further configured such that the through hole is located in the middle of the shell, and the liquid storage cylinder is located directly below the through hole.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This utility model's low-torque lightweight rod end ball joint features a liquid storage cylinder installed at the bottom of the housing, allowing the ball joint to store a large amount of lubricating oil. Simultaneously, when the user secures the hollow block to the connecting plate on the liquid-pushing bracket using bolts and nuts, the pulling force of the first spring on the hollow block causes the liquid-pushing plate to move automatically upwards, continuously pushing the lubricating oil from the storage cylinder into the upper and lower ball seats. This ensures sufficient and long-lasting lubrication for the ball head rod, effectively reducing wear between the ball joint and the ball head rod.

[0015] The low-torque lightweight rod end ball joint of this utility model, through the cooperation of a hollow rotating block, a third limiting ring, a fourth limiting ring, a round hole, a second spring, a conical groove, and a steel ball, ensures that after the pressure of the upper ball seat on the ball head rod reaches a specified level, the hollow rotating block can no longer drive the end cap to rotate. Therefore, when the ball head rod is installed in the ball joint, the wear of the ball head rod is not easily accelerated due to the pressure process of the ball seat on the ball head rod. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view of the structure of this utility model;

[0018] Figure 3 This is a right view of the structure of this utility model;

[0019] Figure 4 yes Figure 3 Sectional view at point AA;

[0020] Figure 5 yes Figure 4 Enlarged view at point B in the middle;

[0021] Figure 6 This is a top view of the shell in this utility model;

[0022] Figure 7 This is a right view of the fluid-pushing support in this utility model;

[0023] Figure 8 This is a bottom view of the liquid-pushing plate in this utility model;

[0024] Figure 9 This is a top view of the hollow rotating block of this utility model;

[0025] Figure 10 This is a bottom view of the third limiting ring in this utility model;

[0026] Figure 11 yes Figure 10 Sectional view at point CC.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Shell; 2. End cap; 3. Upper ball seat; 4. Lower ball seat; 5. Ball head rod; 6. Through hole; 7. Liquid storage square tube; 8. Liquid inlet pipe; 9. Sealing plug; 10. Liquid pusher bracket; 101. Liquid pusher plate; 102. Connecting column; 103. Connecting plate; 104. Nut; 11. First limiting ring; 12. Second limiting ring; 13. Bolt; 14. Hollow block; 15. First spring; 16. Connecting block; 17. Hollow rotating block; 18. Third limiting ring; 19. Fourth limiting ring; 20. Round hole; 21. Second spring; 22. Conical groove; 23. Steel ball. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] like Figures 1 to 8 As shown, a low-torque lightweight rod end ball joint includes a housing 1. An end cap 2 is threaded onto the surface of the housing 1. An upper ball seat 3 is fitted to the inner wall of the end cap 2, and a lower ball seat 4 is fitted to the inner wall of the housing 1. Ball head rods 5 are fitted to the inner walls of both the upper ball seat 3 and the lower ball seat 4. A through hole 6 is provided at the bottom of the housing 1. A liquid storage cylinder 7 is fixedly connected to the bottom of the housing 1. The through hole 6 is located in the middle of the housing 1, and the liquid storage cylinder 7 is located directly below the through hole 6. An inlet pipe 8 is fixedly connected to the left side of the liquid storage cylinder 7. A sealing plug 9 is threaded onto the inner wall of the liquid storage cylinder 7. A liquid pusher 10 is fitted to the inner wall of the liquid storage cylinder 7. A first limiting ring 11 is fixedly connected to the inner wall of the liquid storage cylinder 7. A second limiting ring 12 is fixedly connected to the inner wall of the liquid storage cylinder 7. A bolt 13 is threaded onto the inner wall of the liquid pusher 10. A hollow block 14 is sleeved on the surface of the bolt 13. A first spring 15 is fixedly connected to the upper surface of the hollow block 14. A connecting block 16 is fixedly connected to the upper surface of the first spring 15. The left side of the connecting block 16 is fixedly connected to the right side of the liquid storage cylinder 7.

[0032] The liquid-pushing support 10 includes a liquid-pushing plate 101, a connecting column 102, a connecting plate 103, and a nut 104. The surface of the liquid-pushing plate 101 is attached to the inner wall of the liquid storage cylinder 7. The bottom of the liquid-pushing plate 101 is fixedly connected to the top of the connecting column 102. The bottom of the connecting column 102 is fixedly connected to the upper surface of the connecting plate 103. The right side of the connecting plate 103 is fixedly connected to the left side of the nut 104. The inner wall of the nut 104 is threadedly connected to the surface of the bolt 13. The first limiting ring 11 is located between the liquid-pushing plate 101 and the liquid inlet pipe 8. The second limiting ring 12 is located below the liquid-pushing plate 101.

[0033] It should be noted that the lubricating oil in the liquid storage cylinder 7 can enter the upper ball seat 3 and the lower ball seat 4 through the through hole 6. The inlet pipe 8 can be sealed by the sealing plug 9, and the lubricating oil can be injected into the liquid storage cylinder 7 through the inlet pipe 8.

[0034] The hollow block 14 is fixed to the connecting plate 103 on the liquid pusher bracket 10 by the cooperation of bolt 13 and nut 104. After the hollow block 14 is fixed together with the connecting plate 103, the pulling force of the first spring 15 on the hollow block 14 will drive the liquid pusher plate 101 to move upward automatically and continuously push the lubricating oil in the liquid storage cylinder 7 into the upper ball seat 3 and the lower ball seat 4. At this time, the ball head rod 5 can obtain sufficient and long-lasting lubrication.

[0035] The first limiting ring 11 prevents the pusher plate 101 from being higher than the inlet pipe 8, and the second limiting ring 12 prevents the pusher plate 101 from being moved out of the liquid storage cylinder 7.

[0036] like Figures 1 to 11 As shown, a hollow rotating block 17 is fitted onto the surface of the end cap 2. A third limiting ring 18 is fixedly connected to the surface of the end cap 2. The bottom of the third limiting ring 18 is in contact with the upper surface of the hollow rotating block 17. A fourth limiting ring 19 is fixedly connected to the surface of the end cap 2. The upper surface of the fourth limiting ring 19 is in contact with the bottom of the hollow rotating block 17. A circular hole 20 is opened inside the hollow rotating block 17. A second spring 21 is installed inside the circular hole 20. A conical groove 22 is opened on the bottom of the third limiting ring 18 and the upper surface of the fourth limiting ring 19. Steel balls 23 are fixedly connected to the upper and lower sides of the second spring 21. The inner wall of the conical groove 22 and the inner wall of the circular hole 20 are in contact with the surface of the steel ball 23.

[0037] The second spring 21 has a greater elastic force than the weight of the steel ball 23, and the axis of the second spring 21 coincides with the center of the steel ball 23.

[0038] It should be noted that, through the cooperation of the third limiting ring 18 and the fourth limiting ring 19, the hollow rotating block 17 can only rotate on the end cap 2 and cannot move up and down. Through the elastic force of the second spring 21, the steel ball 23 is tightly abutted against the conical groove 22. Through the cooperation of the steel ball 23, the conical groove 22 and the round hole 20, the hollow rotating block 17 can drive the end cap 2 to rotate. When the pressure of the upper ball seat 3 on the ball head rod 5 reaches the specified size, since the resistance of the end cap 2 rotation is greater than the elastic force of the second spring 21, if the hollow rotating block 17 is continued to rotate, the steel ball 23 will be moved out of the conical groove 22, and the hollow rotating block 17 will not be able to continue to drive the end cap 2 to rotate. Therefore, when the ball head rod 5 is installed in the ball joint, the wear of the ball head rod 5 will not be accelerated due to the pressure process of the ball seat on the ball head rod 5.

[0039] During assembly, the lower ball seat 4 is first placed inside the housing 1. Then, the ball head rod 5 is placed inside the lower ball seat 4, and the upper ball seat 3 and end cap 2 are both fitted onto the ball head rod 5. Then, since the resistance when the end cap 2 is screwed onto the housing 1 is less than the elastic force of the second spring 21, the end cap 2 can be screwed onto the housing 1 by rotating the hollow rotating block 17 through the cooperation of the second spring 21, the steel ball 23, the conical groove 22 and the round hole 20. When the pressure of the upper ball seat 3 on the ball head rod 5 reaches the specified level, since the resistance of the end cap 2 rotation is greater than the elastic force of the second spring 21, the hollow rotating block 17 is continued to rotate, which will cause the steel ball 23 to move out of the conical groove 22 and prevent the hollow rotating block 17 from continuing to drive the end cap 2 to rotate, thereby preventing the pressure of the upper ball seat 3 on the ball head rod 5 from being too large.

[0040] When injecting lubricating oil into the liquid storage cylinder 7, first unscrew the bolt 13 from the nut 104 to separate the hollow block 14 from the connecting plate 103. Then, unscrew the sealing plug 9 from the inlet pipe 8 and inject lubricating oil into the liquid storage cylinder 7 through the inlet pipe 8. When the lubricating oil in the liquid storage cylinder 7 reaches the specified amount, screw the sealing plug 9 back into the inlet pipe 8. Then, insert the bolt 13 into the hollow block 14 and screw the bolt 13 into the nut 104. At this time, through the cooperation of the bolt 13 and the nut 104, the hollow block 14 is fixed to the connecting plate 103 on the pusher bracket 10. After the hollow block 14 is fixed together with the connecting plate 103, the pulling force of the first spring 15 on the hollow block 14 will drive the pusher plate 101 to move automatically upward and continuously push the lubricating oil in the liquid storage cylinder 7 into the upper ball seat 3 and the lower ball seat 4. At this time, the ball head rod 5 can obtain sufficient and long-lasting lubrication.

[0041] 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 low-torque, lightweight rod end ball joint, characterized in that: The system includes a housing (1), an end cap (2) threadedly connected to the surface of the housing (1), an upper ball seat (3) fitted to the inner wall of the end cap (2), a lower ball seat (4) fitted to the inner wall of the housing (1), ball head rods (5) fitted to the inner walls of both the upper ball seat (3) and the lower ball seat (4), a through hole (6) at the bottom of the housing (1), a liquid storage cylinder (7) fixedly connected to the bottom of the housing (1), an inlet pipe (8) fixedly connected to the left side of the liquid storage cylinder (7), a sealing plug (9) threadedly connected to the inner wall of the inlet pipe (8), and the liquid storage cylinder... (7) has a liquid-pushing bracket (10) attached to its inner wall. The inner wall of the liquid storage cylinder (7) is fixedly connected to a first limiting ring (11). The inner wall of the liquid storage cylinder (7) is fixedly connected to a second limiting ring (12). The inner wall of the liquid-pushing bracket (10) is threadedly connected to a bolt (13). A hollow block (14) is sleeved on the surface of the bolt (13). A first spring (15) is fixedly connected to the upper surface of the hollow block (14). A connecting block (16) is fixedly connected to the upper surface of the first spring (15). The left side of the connecting block (16) is fixedly connected to the right side of the liquid storage cylinder (7).

2. The low-torque lightweight rod end ball joint according to claim 1, characterized in that: The liquid-pushing bracket (10) includes a liquid-pushing plate (101), a connecting column (102), a connecting plate (103), and a nut (104). The surface of the liquid-pushing plate (101) is in contact with the inner wall of the liquid storage cylinder (7). The bottom of the liquid-pushing plate (101) is fixedly connected to the top of the connecting column (102). The bottom of the connecting column (102) is fixedly connected to the upper surface of the connecting plate (103). The right side of the connecting plate (103) is fixedly connected to the left side of the nut (104). The inner wall of the nut (104) is threadedly connected to the surface of the bolt (13).

3. The low-torque lightweight rod end ball joint according to claim 2, characterized in that: The first limiting ring (11) is located between the liquid pusher plate (101) and the liquid inlet pipe (8), and the second limiting ring (12) is located below the liquid pusher plate (101).

4. The low-torque lightweight rod end ball joint according to claim 1, characterized in that: A hollow rotating block (17) is fitted on the surface of the end cap (2). A third limiting ring (18) is fixedly connected to the surface of the end cap (2). The bottom of the third limiting ring (18) is in contact with the upper surface of the hollow rotating block (17). A fourth limiting ring (19) is fixedly connected to the surface of the end cap (2). The upper surface of the fourth limiting ring (19) is in contact with the bottom of the hollow rotating block (17). A circular hole (20) is opened inside the hollow rotating block (17). A second spring (21) is installed inside the circular hole (20). A conical groove (22) is opened on the bottom of the third limiting ring (18) and the upper surface of the fourth limiting ring (19). Steel balls (23) are fixedly connected to the upper and lower sides of the second spring (21). The inner wall of the conical groove (22) and the inner wall of the circular hole (20) are in contact with the surface of the steel ball (23).

5. The low-torque lightweight rod end ball joint according to claim 4, characterized in that: The elastic force of the second spring (21) is greater than the weight of the steel ball (23), and the axis of the second spring (21) coincides with the center of the steel ball (23).

6. The low-torque lightweight rod end ball joint according to claim 1, characterized in that: The through hole (6) is located in the middle of the shell (1), and the liquid storage cylinder (7) is located directly below the through hole (6).

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