Simple tripod constant velocity universal joint assembly

Abstract

The utility model provides a simple tripod constant velocity universal joint assembly which comprises a pin frame, a butt joint assembly used for butt joint is arranged outside the pin frame, a plurality of rollers are fixedly connected to the outside of the butt joint assembly, a plurality of supporting rods are fixedly connected to the interiors of the rollers, and the supporting rods are fixedly connected to the interiors of the pin frame. A fixing disc is fixedly connected to the exteriors of every four supporting rods, sliding columns are slidably connected to the interiors of the multiple fixing discs, sealing balls are fixedly connected to the far sides of the multiple sliding columns, supporting plates are fixedly connected to the close sides of the multiple sliding columns, springs are arranged on the exteriors of the multiple sliding columns in a sleeving mode, and the springs are fixedly connected to the interiors of the multiple sliding columns. And a plurality of leakage grooves are formed in the roller. According to the utility model, the roller and the wear-resistant coating outside the roller are ensured to be timely and effectively lubricated in the working process, the wear is reduced, and the rotating efficiency and the stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal joints, in particular to a simple three-ball pin constant velocity universal joint assembly. Background Art

[0002] The three-ball pin constant velocity universal joint is a mechanical interface for transmitting torque and rotational speed, and is widely used in automobiles and other mechanical systems, especially at the connection between the drive shaft and the wheel shaft. It is designed to allow the connecting shafts to freely bend or rotate within a certain angle, so as to adapt to changes in road conditions or relative movement of components. This universal joint consists of three small balls, a ball cage, and a cup-shaped housing. The small balls are located between the cup-shaped housing and the ball cage during rotation. Due to its structural design, the three-ball pin constant velocity universal joint can maintain the rotational speed of the output shaft equal to that of the input shaft when transmitting power, and can achieve constant velocity transmission even when there is an angle between the two shafts.

[0003] Chinese Patent CN217002762U discloses a three-pin constant velocity universal joint and a drive shaft assembly, which relates to the technical field of vehicle component design. The disclosed three-pin constant velocity universal joint includes a housing, a three-pin fork, and three ball rings. The housing includes a cavity and three guide grooves provided on the inner wall of the housing. The three guide grooves are evenly distributed along the circumferential direction of the housing. The three-pin fork is disposed in the cavity. The three-pin fork includes a shaft sleeve and three shaft necks radially protruding from the shaft sleeve. The three shaft necks respectively extend into the three guide grooves. The three ball rings are respectively connected to the three shaft necks, and the three ball rings are respectively movably disposed in the three guide grooves. The three-pin fork drives the ball rings to rotate relative to the housing to change the angle between the axis of the housing and the axis of the shaft sleeve. There is a safety gap between the side surface of the ball ring and the bottom wall of the guide groove. The above solution can solve the problem that the three-pin constant velocity universal joint generates large vibrations when bearing torque in related technologies.

[0004] However, some existing three-ball pin constant velocity universal joints cannot effectively lubricate the universal joint in time during use, and an additional lubrication mechanism needs to be used to add oil to the connection of the universal joint. This is not only time-consuming and laborious, but also cannot achieve lubrication in a timely and effective manner. Therefore, in view of the above deficiencies, a simple three-ball pin constant velocity universal joint assembly is proposed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a simple three-ball pin constant velocity universal joint assembly for the deficiencies of the prior art. Through the displacement of the sealing ball and the elastic force of the spring, the release of lubricating oil can be realized, so as to achieve timely lubrication and solve the problem that the universal joint itself cannot be lubricated evenly in time.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A simple type three-ball pin constant velocity universal joint assembly includes a pin holder, and a docking component for docking is arranged outside the pin holder. A plurality of rollers are fixedly connected to the outside of the docking component. A plurality of support rods are fixedly connected to the inside of each of the plurality of rollers. A fixing plate is fixedly connected to the outside of every four of the support rods. A sliding column is slidably connected to the inside of the plurality of fixing plates. Sealing balls are fixedly connected to the far sides of the plurality of sliding columns. Support plates are fixedly connected to the near sides of the plurality of sliding columns. Springs are sleeved on the outside of the plurality of sliding columns. Leakage grooves are formed in the inside of the rollers. Sealing components are arranged inside the plurality of rollers;

[0008] As a further description of the above technical solution:

[0009] The docking component includes a plurality of pin columns, and the outside of the plurality of pin columns is fixedly connected to the outside of the pin holder. A plurality of docking grooves are formed in the inside of the pin holder;

[0010] As a further description of the above technical solution:

[0011] Each of the plurality of sealing components includes a threaded column, and the outside of the plurality of threaded columns is threadedly connected to the inside of the roller. Twisting plates are fixedly connected to the tops of the plurality of threaded columns;

[0012] As a further description of the above technical solution:

[0013] Wear-resistant coatings are fixedly connected to the outside of the plurality of rollers;

[0014] As a further description of the above technical solution:

[0015] The outside of the sliding column is slidably connected to the inside of the roller, and the outside of the sealing ball is slidably connected to the inside of the roller;

[0016] As a further description of the above technical solution:

[0017] One end of the spring is fixedly connected to the outside of the support plate, and the other end of the spring is fixedly connected to the outside of the fixing plate;

[0018] As a further description of the above technical solution:

[0019] The pin holder is made of carbon steel, and the pin column is made of bearing steel;

[0020] As a further description of the above technical solution:

[0021] The roller is made of cemented carbide, and the wear-resistant coating is made of boron nitride coating.

[0022] The beneficial effects of the present utility model are as follows:

[0023] (1) In the present utility model, when the universal joint rotates during use, the sealing ball is squeezed and slides inside the roller, thereby pushing the sliding column to displace and stretching the spring. As a result, a gap is generated between the sealing ball and the leakage groove, allowing the internal lubricating oil to flow out from this gap, thus ensuring that the roller and its external wear-resistant coating are lubricated in a timely and effective manner during operation, reducing wear, and improving the rotation efficiency and stability.

[0024] (2) In the present utility model, the pin column is made of high-hardness bearing steel, and the roller is made of cemented carbide material. Both have extremely high hardness and excellent wear-resistant characteristics. The outside of the roller is also coated with a wear-resistant coating formed by a boron nitride coating, providing additional protection for the roller, enabling the universal joint to maintain precise dimensions and shape under long-term high-load working conditions, greatly enhancing the wear resistance, and thus significantly extending the service life.

[0025] In summary, the present utility model has the advantages of timely lubrication and strong wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0027] Figure 2 is a schematic diagram of the pin holder structure of the present utility model;

[0028] Figure 3 is a schematic diagram of the support plate structure of the present utility model;

[0029] Figure 4 is for Figure 3 enlarged view at A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] Example 1

[0033] Reference Figures 1 to 3 , This embodiment provides a simple tripod constant velocity universal joint assembly, including a pin rack 1, the pin rack 1 is made of carbon steel, which ensures its high strength and good impact resistance. It is the core support frame of the entire universal joint. The material of the pin rack 1 is carbon steel. The outside of the pin rack 1 is provided with a docking assembly for docking. The docking assembly includes a plurality of pins 3. The outsides of the plurality of pins 3 are fixedly connected to the outside of the pin rack 1. The material of the pins 3 is bearing steel. The pins 3 are made of high-hardness bearing steel, which provides excellent wear resistance and ensures precise cooperation with the roller 4, so that the universal joint can rotate freely after assembly and realize constant velocity transmission. The interior of the pin rack 1 is provided with a plurality of docking grooves 2. The docking grooves 2. These slots precisely match the docking assembly, so that the entire structure can be assembled accurately, ensuring the operating efficiency and stability of the universal joint. The docking assembly is fixedly connected to the outside with multiple rollers 4. The material of the roller 4 is cemented carbide. The roller 4 is made of cemented carbide material. This material has extremely high hardness and excellent wear resistance, so that the roller 4 can still maintain accurate size and shape during long-term work. The interior of the multiple rollers 4 is fixedly connected to multiple support rods 5. The outside of every four support rods 5 is fixedly connected to a fixed plate 6. The interior of the multiple fixed plates 6 is slidably connected to a sliding column 7. The precise processing of the support rods 5 and the fixed plates 6 ensures the linear motion of the sliding column 7.

[0034] Example 2

[0035] Reference Figures 2 to 4, where the same or corresponding components as those in the first embodiment are denoted by the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment will be described below. The differences between the second embodiment and the first embodiment are as follows:

[0036] The outer part of the sliding column 7 is slidably connected inside the roller 4. Sealing balls 8 are fixedly connected to the far sides of multiple sliding columns 7. The outer parts of the sealing balls 8 are slidably connected inside the roller 4. The sliding column 7 and the sealing ball 8 can smoothly move when stressed, realizing the release and sealing of lubricating oil. Support plates 9 are fixedly connected to the adjacent sides of multiple sliding columns 7. Springs 10 are sleeved on the outer parts of multiple sliding columns 7. One end of the spring 10 is fixedly connected to the outside of the support plate 9, and the other end of the spring 10 is fixedly connected to the outside of the fixed disk 6. When the sealing ball 8 is not stressed, it is reset by the resilience of the spring 10 to keep the lubricating oil from leaking. Multiple leakage grooves 11 are formed inside the roller 4. The leakage grooves 11 are used to control the flow of lubricating oil and adapt to the movement of the sealing ball 8. Sealing assemblies are arranged inside multiple rollers 4. Multiple sealing assemblies each include a threaded column 12. The outer parts of multiple threaded columns 12 are threadedly connected inside the roller 4. Torsion plates 13 are fixedly connected to the tops of multiple threaded columns 12. The threaded column 12 and the torsion plate 13 ensure adaptability and sealing performance under different working conditions. Wear-resistant coatings 14 are fixedly connected to the outsides of multiple rollers 4. The material of the wear-resistant coating 14 is a boron nitride coating. The wear-resistant coating 14 provides additional protection for the roller 4 and extends its service life.

[0037] Working steps

[0038] When this universal joint is in use, as the universal joint rotates inside the docking frame, the sealing ball 8 will be squeezed and displaced at this time, and then the sealing ball 8 can slide inside the roller 4. Further, the sliding column 7 can be displaced and the spring 10 can be stretched. At this time, the sealing ball 8 is made to slide inside the leakage groove 11, so that a gap appears between the sealing ball 8 and the leakage groove 11. At this time, the internal lubricating oil will flow out from the gap, so as to realize the lubrication of the outside of the roller 4 and the wear-resistant coating 14, and thus realize the protection of this universal joint during use. When the sealing ball 8 is no longer stressed, the spring 10 will rebound, and then the sealing ball 8 will be reset, so as to prevent the leakage of lubricating oil.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A simple type three-ball pin constant velocity universal joint assembly, including a pin holder, characterized in that: An external docking component for docking is provided on the outside of the pin rack. A plurality of rollers are fixedly connected to the outside of the docking component. A plurality of support rods are fixedly connected to the inside of each of the plurality of rollers. A fixing plate is fixedly connected to the outside of every four of the support rods. A sliding column is slidably connected to the inside of the plurality of fixing plates. Sealing balls are fixedly connected to the opposite sides of the plurality of sliding columns. Support plates are fixedly connected to the adjacent sides of the plurality of sliding columns. Springs are sleeved on the outside of the plurality of sliding columns. A plurality of leakage grooves are formed in the inside of the rollers. A sealing component is provided in the inside of each of the plurality of rollers.

2. The simple three-ball pin constant velocity universal joint assembly according to claim 1, characterized in that: The docking component includes a plurality of pin columns. The outside of the plurality of pin columns is fixedly connected to the outside of the pin rack. A plurality of docking grooves are formed in the inside of the pin rack.

3. A simple type three-ball pin constant velocity universal joint assembly according to claim 1, characterized in that: Each of the plurality of sealing components includes a threaded column. The outside of the plurality of threaded columns is threadedly connected to the inside of the rollers. A torsion plate is fixedly connected to the top of each of the plurality of threaded columns.

4. A simple three-ball pin constant velocity universal joint assembly according to claim 1, characterized in that: A wear-resistant coating is fixedly connected to the outside of each of the plurality of rollers.

5. A simple three-ball pin constant velocity universal joint assembly according to claim 1, characterized in that: The outside of the sliding column is slidably connected to the inside of the roller. The outside of the sealing ball is slidably connected to the inside of the roller.

6. The simple constant velocity joint assembly with three ball pins according to claim 1, characterized in that: One end of the spring is fixedly connected to the outside of the support plate. The other end of the spring is fixedly connected to the outside of the fixing plate.

7. A simple three-ball pin constant velocity universal joint assembly according to claim 2, characterized in that: The pin rack is made of carbon steel. The pin column is made of bearing steel.

8. A simple type tripod constant velocity joint assembly according to claim 4, characterized in that: The roller is made of cemented carbide. The wear-resistant coating is made of boron nitride coating.

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