Ball cage type constant velocity universal joint

Abstract

The utility model discloses a ball cage type constant velocity universal joint, which relates to the technical field of universal joints, and comprises a starlike sleeve, a retainer and a steel ball, the end faces of the starlike sleeve and the retainer are respectively and fixedly provided with a transmission shaft, two pressing blocks are pressed to enable a sliding rod, a connecting rod and a fixed rod to move, the fixed rod is retracted into a connecting ring, and the steel ball is fixed on the sliding rod. At the moment, a spring is in a stress compression state, a connecting ring on the dustproof sleeve is inserted into an annular groove, a pressing block is loosened, and an elastic reset effect of the spring is utilized, so that a sliding rod, a connecting rod and a fixing rod are reset, the fixing rod is inserted into a fixing groove, the dustproof sleeve and the mounting ring are fixedly connected, and therefore connection and fixation of the dustproof sleeve and the protective cover are completed; and then the screw rod is twisted to enable the fixing ring to deform, the fixing ring is fastened on the transmission shaft by utilizing the deformation of the fixing ring, so that the dustproof sleeve is mounted and fixed, the dustproof sleeve and the protective cover are connected more simply, and quick mounting and fixing are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of universal joints, and particularly relates to a constant velocity joint of a ball cage type. Background Art

[0002] A universal joint, namely a universal joint head, is a mechanical part for realizing power transmission at a variable angle and is used for positions where the direction of the transmission axis needs to be changed. It is a "joint" part of the universal transmission device of an automobile drive system. The combination of a universal joint and a transmission shaft is called a universal joint transmission device.

[0003] For example, the Chinese patent discloses: a constant velocity joint of a ball cage type, publication number: CN206754206U, "including a transmission shaft and a housing connected to each other. A star-shaped sleeve, a cage and steel balls are arranged in the housing. The housing includes an installation cavity and a heat dissipation cavity connected to each other. The star-shaped sleeve and the cage are installed in the installation cavity through the steel balls. The star-shaped sleeve includes a groove adapted to the steel balls. The groove includes a first contact wall and a second contact wall respectively arranged on both sides of the inner wall of the groove. An arc-shaped groove bottom is arranged at the bottom of the groove. The first contact wall and the second contact wall are connected through the arc-shaped groove bottom. The arc-shaped groove bottom is arranged at a gap with the steel balls. The gap between the arc-shaped groove bottom and the steel balls forms a heat dissipation groove", but in the actual use process, it is not convenient to quickly connect and fix the dust cover, and the use is relatively inconvenient. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a constant velocity joint of a ball cage type, which solves the technical problem that in the actual use process, it is not convenient to quickly connect and fix the dust cover, and the use is relatively inconvenient.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model is realized through the following technical solutions:

[0008] A constant velocity universal joint of the ball cage type, comprising a star-shaped sleeve, a cage and steel balls. Drive shafts are fixedly installed on the end faces of both the star-shaped sleeve and the cage. The end of the star-shaped sleeve is provided with a plurality of claws distributed at equal intervals in a ring shape. The claws embrace the outside of the cage. The steel balls are distributed between the claws and the cage. A dust-proof assembly is arranged on the outside of the star-shaped sleeve. The dust-proof assembly includes a protective cover and a dust-proof sleeve. The dust-proof sleeve is sleeved on the star-shaped sleeve. The protective cover is sleeved on the cage. The two opposite ends of the protective cover and the dust-proof sleeve are fixedly connected. An installation ring is fixedly sleeved on the protective cover. An annular groove is formed on the surface of the installation ring. A sealing ring is arranged in the annular groove. A connecting ring is fixedly installed at one end of the dust-proof sleeve. The other end of the dust-proof sleeve is fixedly connected with a fixing ring. The connecting ring is inserted into the annular groove. The fixing ring is sleeved on the drive shaft. A fixing component is arranged on the connecting ring. The fixing component includes a connecting block.

[0009] Preferably: A screw is threadedly connected to the fixing ring. The number of the connecting blocks is two. The two connecting blocks are symmetrically distributed at the two end parts of the connecting ring.

[0010] Preferably: The two connecting blocks are both located outside the installation ring. Fixing grooves are formed in the inner walls of the two sides of the installation ring at a distance. A sliding rod penetrates through each connecting block movably. A connecting rod is fixedly installed on each sliding rod. A fixing rod is fixedly connected to each connecting rod.

[0011] Preferably: Each of the sliding rod, the connecting rod and the fixing rod is slidably installed inside the connecting ring. Each fixing rod is respectively inserted into the fixing groove movably. A pressing block is fixedly installed at the end of each sliding rod. A spring is fixedly connected to each pressing block. Each pressing block is fixedly connected to the connecting block through the spring.

[0012] (III) Beneficial effects

[0013] First, press the two pressing blocks to move the sliding rod, the connecting rod and the fixing rod, so that the fixing rod retracts into the inside of the connecting ring. At this time, the spring is in a state of being compressed under force. Insert the connecting ring on the dust-proof sleeve into the annular groove. Release the pressing block. Utilize the elastic reset function of the spring to make the sliding rod, the connecting rod and the fixing rod reset, so that the fixing rod is inserted into the fixing groove, making the dust-proof sleeve and the installation ring connected and fixed. Thus, the connection between the dust-proof sleeve and the protective cover is completed. Then, twist the screw to make the fixing ring deformed. Utilize the deformation of the fixing ring to make the fixing ring fastened on the drive shaft, thereby completing the installation and fixation of the dust-proof sleeve. The connection between the dust-proof sleeve and the protective cover is relatively simple and is convenient for quick installation and fixation.

[0014] Second, a sealing ring is provided in the annular groove. The sealing ring is located between the connecting ring and the annular groove, which plays a sealing role at the connection between the connecting ring and the mounting ring, thereby playing a sealing role at the connection between the dust cover and the protective cover, improving the dust-proof effect and extending the service life of the universal joint. Brief Description of the Drawings

[0015] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the following will describe in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

[0016] Figure 1 It is a structural diagram of the overall constant velocity joint of the ball cage type of the present invention;

[0017] Figure 2 It is a structural diagram of the star-shaped sleeve of the present invention;

[0018] Figure 3 It is a structural diagram of the connecting ring of the present invention;

[0019] Figure 4 It is a structural diagram of the mounting ring of the present invention;

[0020] Figure 5 It is a structural diagram of the connecting block of the present invention.

[0021] Legend: 1. Star-shaped sleeve; 2. Cage; 3. Ball; 4. Claw; 5. Transmission shaft; 6. Protective cover; 7. Dust cover; 71. Fixed ring; 72. Screw; 73. Connecting ring; 8. Mounting ring; 81. Annular groove; 82. Sealing ring; 9. Connecting block; 91. Slide bar; 92. Connecting rod; 93. Fixed rod; 94. Pressing block; 95. Spring. Detailed Description of the Invention

[0022] Embodiments of the present application provide a constant velocity joint of the ball cage type, effectively solving the problem that it is inconvenient to quickly connect and fix the dust cover during actual use, and the use is rather inconvenient. For this ball cage type constant velocity joint, when pressing two pressing blocks, the sliding rod, the connecting rod and the fixing rod move, causing the fixing rod to retract into the inner part of the connecting ring. At this time, the spring is in a compressed state under force. Insert the connecting ring on the dust cover into the annular groove, release the pressing blocks, and utilize the elastic reset effect of the spring to make the sliding rod, the connecting rod and the fixing rod reset, causing the fixing rod to insert into the fixing groove, so that the dust cover is connected and fixed to the mounting ring, thus completing the connection and fixing of the dust cover to the cover. Then, twist the screw rod to cause the fixing ring to deform. By using the deformation of the fixing ring, the fixing ring is fastened to the transmission shaft, thereby completing the installation and fixing of the dust cover. The connection of the dust cover to the cover is relatively simple and convenient for quick installation and fixing. By providing a sealing ring in the annular groove, with the sealing ring located between the connecting ring and the annular groove, it plays a sealing role at the connection between the connecting ring and the mounting ring, thus playing a sealing role at the connection between the dust cover and the cover, improving the dust prevention effect and extending the service life of the constant velocity joint.

[0023] Embodiment: As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the technical solutions in the embodiments of the present application effectively solve the technical problem that it is inconvenient to quickly connect and fix the dust cover during actual use, and the overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a constant velocity universal joint of the ball cage type, which includes a star-shaped sleeve 1, a cage 2 and steel balls 3. Transmission shafts 5 are fixedly installed on the end faces of the star-shaped sleeve 1 and the cage 2. The end of the star-shaped sleeve 1 is provided with a plurality of claws 4 distributed at equal intervals in a ring shape. The claws 4 embrace the outside of the cage 2. The steel balls 3 are distributed between the claws 4 and the cage 2. A dust-proof component is arranged on the outside of the star-shaped sleeve 1. The dust-proof component includes a cover 6 and a dust-proof sleeve 7. The dust-proof sleeve 7 is sleeved on the star-shaped sleeve 1. The cover 6 is sleeved on the cage 2. The two opposite ends of the cover 6 and the dust-proof sleeve 7 are fixedly connected. An installation ring 8 is fixedly sleeved on the cover 6. An annular groove 81 is formed on the surface of the installation ring 8. A sealing ring 82 is arranged in the annular groove 81. One end of the dust-proof sleeve 7 is fixedly installed with a connecting ring 73. The other end of the dust-proof sleeve 7 is fixedly connected with a fixing ring 71. The connecting ring 73 is inserted into the annular groove 81. The fixing ring 71 is sleeved on the transmission shaft 5. A fixing component is arranged on the connecting ring 73. The fixing component includes a connecting block 9. A screw rod 72 is threadedly connected to the fixing ring 71. The number of the connecting blocks 9 is two. The two connecting blocks 9 are symmetrically distributed at the two ends of the connecting ring 73. The two connecting blocks 9 are both located outside the installation ring 8. Fixing grooves are formed in the inner walls of the two sides of the installation ring 8. A sliding rod 91 is movably penetrated through each connecting block 9. A connecting rod 92 is fixedly installed on each sliding rod 91. A fixing rod 93 is fixedly connected to each connecting rod 92. Each sliding rod 91, connecting rod 92 and fixing rod 93 are slidably installed inside the connecting ring 73. Each fixing rod 93 is respectively movably inserted into the fixing groove. A pressing block 94 is fixedly installed at the end of each sliding rod 91. A spring 95 is fixedly connected to each pressing block 94. Each pressing block 94 is fixedly connected to the connecting block 9 through the spring 95. When installing the dust-proof sleeve 7, the worker sleeved the dust-proof sleeve 7 on the star-shaped sleeve 1, and then pressed the two pressing blocks 94, so that the sliding rod 91, connecting rod 92 and fixing rod 93 moved, and the fixing rod 93 retracted into the inside of the connecting ring 73. At this time, the spring 95 was in a compressed state under force. The connecting ring 73 on the dust-proof sleeve 7 was inserted into the annular groove 81. The pressing blocks 94 were released. By the elastic reset action of the spring 95, the sliding rod 91, connecting rod 92 and fixing rod 93 were reset, and the fixing rod 93 was inserted into the fixing groove, so that the dust-proof sleeve 7 was fixedly connected to the installation ring 8, and thus the dust-proof sleeve 7 was fixedly connected to the cover 6. Then, the screw rod 72 was twisted to make the fixing ring 71 deformed. By using the deformation of the fixing ring 71, the fixing ring 71 was fastened on the transmission shaft 5, and thus the installation and fixation of the dust-proof sleeve 7 were completed. The connection between the dust-proof sleeve 7 and the cover 6 is relatively simple and convenient for quick installation and fixation. Since the sealing ring 82 is arranged in the annular groove 81 and the sealing ring 82 is located between the connecting ring 73 and the annular groove 81, it plays a sealing role at the connection between the connecting ring 73 and the installation ring 8, and thus plays a sealing role at the connection between the dust-proof sleeve 7 and the cover 6, improving the dust-proof effect and prolonging the service life of the universal joint.

[0025] Working principle:

[0026] First step, when installing the dust cover 7, the worker sleeved the dust cover 7 on the star-shaped sleeve 1, then pressed two pressing blocks 94, so that the sliding rod 91, the connecting rod 92 and the fixing rod 93 moved, making the fixing rod 93 retract into the inside of the connecting ring 73. At this time, the spring 95 was in a compressed state under force. The connecting ring 73 on the dust cover 7 was inserted into the annular groove 81. The pressing block 94 was released, and by the elastic reset action of the spring 95, the sliding rod 91, the connecting rod 92 and the fixing rod 93 were reset, so that the fixing rod 93 was inserted into the fixing groove, making the dust cover 7 connected and fixed to the mounting ring 8, thus making the connection between the dust cover 7 and the cover 6 completed. Then, the screw rod 72 was twisted to make the fixing ring 71 deformed. By using the deformation of the fixing ring 71, the fixing ring 71 was fastened on the transmission shaft 5, thus completing the installation and fixation of the dust cover 7. The connection between the dust cover 7 and the cover 6 is relatively simple and convenient for quick installation and fixation.

[0027] Second step, there is a sealing ring 82 arranged in the annular groove 81. The sealing ring 82 is located between the connecting ring 73 and the annular groove 81, which plays a sealing role at the connection between the connecting ring 73 and the mounting ring 8, thus playing a sealing role at the connection between the dust cover 7 and the cover 6, improving the dust-proof effect and prolonging the service life of the universal joint.

[0028] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A ball cage type constant velocity universal joint, comprising a star sleeve (1), a retaining frame (2) and steel balls (3), wherein the end faces of the star sleeve (1) and the retaining frame (2) are fixedly mounted with a transmission shaft (5), the end of the star sleeve (1) is a plurality of claws (4) distributed in an annular shape and at equal intervals, the claws (4) are embraced and attached to the outside of the retaining frame (2), and the steel balls (3) are distributed between the claws (4) and the retaining frame (2), characterized in that: A dustproof component is arranged on the outside of the star-shaped sleeve (1), and the dustproof component comprises a protective cover (6) and a dustproof sleeve (7); The dust cover (7) is sleeved on the star-shaped sleeve (1), the protective cover (6) is sleeved on the retaining frame (2), the protective cover (6) and the dust cover (7) are connected and fixed at opposite ends, a mounting ring (8) is fixedly sleeved on the protective cover (6), an annular groove (81) is formed on the surface of the mounting ring (8), and a sealing ring (82) is arranged in the annular groove (81); One end of the dust cover (7) is fixedly mounted with a connecting ring (73), the other end of the dust cover (7) is fixedly connected with a fixing ring (71), the connecting ring (73) is inserted into the annular groove (81), the fixing ring (71) is sleeved on the transmission shaft (5), and a fixing component is arranged on the connecting ring (73), and the fixing component includes a connecting block (9).

2. A ball cage type constant velocity universal joint according to claim 1, characterized in that: The fixing ring (71) is threadedly connected with a screw rod (72).

3. A ball cage type constant velocity universal joint according to claim 1, characterized in that: The number of the connecting blocks (9) is two; The two connecting blocks (9) are symmetrically distributed at the two side ends of the connecting ring (73).

4. A ball cage type constant velocity universal joint according to claim 3, characterized in that: The two connection blocks (9) are both located outside the mounting ring (8).

5. The ball cage type constant velocity universal joint according to claim 1, characterized in that: The inner walls of both sides of the mounting ring (8) are provided with fixing grooves; Wherein, each of the connection blocks (9) has a sliding rod (91) movably passing through it, each of the sliding rods (91) has a connecting rod (92) fixedly mounted on it, and each of the connecting rods (92) has a fixing rod (93) fixedly connected to it.

6. A ball cage type constant velocity universal joint according to claim 5, characterized in that: Each of the sliding rods (91), the connecting rods (92) and the fixing rods (93) are slidably mounted inside the connecting ring (73), and each of the fixing rods (93) is movably inserted into the fixing grooves; Wherein, a pressing block (94) is fixedly mounted on the end of each sliding rod (91), a spring (95) is fixedly connected to each pressing block (94), and each pressing block (94) is fixedly connected to the connecting block (9) via the spring (95).

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