Universal joint pin type universal joint for vehicle

Abstract

The utility model is suitable for the technical field of universal joints, and provides a vehicle cross shaft type universal joint which comprises a cross shaft sleeve, telescopic arms are arranged at the four ends of the cross shaft sleeve in a telescopic mode, and a driving assembly for driving the four telescopic arms to move in a telescopic mode is arranged in an inner cavity of the cross shaft sleeve. The input end of the driving assembly extends out of the cross-shaped shaft sleeve and is fixedly connected with a nut, the inner side face of the nut is fixedly connected with a gear, and the front side face of the cross-shaped shaft sleeve is fixedly connected with a containing box. According to the cross shaft type universal joint for the vehicle, in the rotating process of the nut, the gear is driven to rotate together, after rotation of the nut is completed, the rack plate can be driven to move towards the position of the gear through movement of the telescopic rod, and after the rack plate is meshed with the surface of the gear, the nut can be clamped and fixed after the position of the nut is rotated; and then the telescopic arm is fixed after stretching, and the stability of the telescopic arm after stretching is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of universal joints, and in particular relates to a cross-axis universal joint for a vehicle. Background Art

[0002] The universal joint is a mechanical component that realizes variable-angle power transmission. It is used in positions where the direction of the transmission axis needs to be changed. The universal joint is installed between the front axle half shaft and the wheel, which is responsible for both driving and steering. It is the "joint" component of the universal joint device of the automobile drive system. The combination of the universal joint and the drive shaft is called a universal joint transmission device.

[0003] In the prior art, for example, patent CN217355286U discloses a cross-axis universal joint for a vehicle. This technical solution drives the circular gear and the rotating shaft to rotate through meshing action. The rotating shaft drives the telescopic shaft to move outward along the axial cavity of the cross-shaped sleeve through a threaded connection, and drives the limit plate and the hinge shaft to move outward, so that the hinge shaft is inserted into the circular holes of universal joint forks of different sizes, and the installation of the hinge shaft and universal joint forks of different sizes is completed. The universal joint fork and the cross-shaped sleeve can be disassembled by rotating the nut in the opposite direction during disassembly to make the telescopic shaft slide inward along the axial cavity of the cross-shaped sleeve so that the hinge shaft is detached from the circular hole of the universal joint fork.

[0004] However, the existing universal joint does not have the function of positioning the nut after twisting during use, resulting in poor stability and easy deviation of the telescopic shaft after adjustment and movement, which is not conducive to the assembly of the cross-axis universal joint. Utility Model Content

[0005] The utility model provides a cross-axis universal joint for a vehicle, aiming to solve the problem that the cross-axis universal joint for a vehicle does not have the function of positioning after twisting a nut during use, has poor stability, and is not conducive to the assembly of the cross-axis universal joint.

[0006] The utility model is implemented as follows: a cross-axis universal joint for a vehicle comprises a cross-shaped sleeve, four ends of the cross-shaped sleeve are telescopically provided with telescopic arms, the inner cavity of the cross-shaped sleeve is provided with a driving assembly for driving the four telescopic arms to telescopically move, the input end of the driving assembly extends to the outside of the cross-shaped sleeve and is fixedly connected with a nut;

[0007] A gear is fixedly connected to the inner side of the nut, a accommodating box is fixedly connected to the front side of the cross sleeve, a telescopic rod is telescopically arranged at one end of the accommodating box close to the nut, a rack plate matched with the gear is fixedly connected to one end of the telescopic rod, and a transmission structure for driving the telescopic rod to move telescopically is arranged in the inner cavity of the accommodating box.

[0008] Preferably, the four ends of the cross-shaped sleeve are each provided with a limit plate adapted to the telescopic arm, and the outer end of the telescopic arm is provided with a hinge shaft adapted to the universal joint fork.

[0009] Preferably, the transmission structure includes a connecting block and a connecting rod, the connecting block is slidably arranged in the inner cavity of the accommodating box, the other end of the telescopic rod is pulled out and extended to the inner cavity of the accommodating box and fixedly connected to the surface of the connecting block, the connecting rod is fixedly connected to the surface of the telescopic rod located in the inner cavity of the accommodating box, the other end of the connecting rod movably extends to the outside of the accommodating box, and the outer side surface of the connecting block is fixedly connected with a spring between the outer ends of the inner wall of the accommodating box.

[0010] Preferably, a side wall of the containing box is provided with a movable opening for the connecting rod to move.

[0011] Preferably, a pull handle is fixedly connected to the outer end of the connecting rod.

[0012] Preferably, a plurality of reinforcing ribs are fixedly connected to the surface of the cross-shaped sleeve.

[0013] Preferably, the outer surface of the cross-shaped sleeve is coated with a primer layer, and the outer surface of the primer layer is coated with an anti-corrosion coating. Beneficial Effects

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By twisting the nut to drive the driving assembly to work, multiple telescopic arms can be driven to telescope and move, and then different universal joint forks can be adapted for use. During the rotation of the nut, the gear is driven to rotate together. After the nut is rotated, the telescopic rod can be moved to drive the rack plate to move toward the position of the gear. After the rack plate engages with the surface of the gear, the nut can be clamped and fixed after the rotation position, and then the telescopic arm can be fixed after extension and retraction, thereby improving the stability of the telescopic arm after extension and retraction, facilitating the assembly and use of the universal joint and universal joint forks of different specifications, and improving the working stability after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the containing box and the connecting block in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the cross-shaped shaft sleeve and the primer layer in the utility model.

[0019] In the figure: 1. cross-shaped bushing; 2. telescopic arm; 3. hinge shaft; 4. limit plate; 5. drive assembly; 6. storage box; 7. nut; 8. gear; 9. spring; 10. connecting block; 11. telescopic rod; 12. rack plate; 13. connecting rod; 14. handle; 15. movable opening; 16. primer layer; 17. anti-corrosion coating; 18. reinforcing ribs. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] See also Figure 1-3 The utility model provides a technical solution: a cross-axis universal joint for a vehicle, comprising a cross-shaped sleeve 1, four ends of the cross-shaped sleeve 1 are telescopically provided with telescopic arms 2, the inner cavity of the cross-shaped sleeve 1 is provided with a driving component 5 for driving the four telescopic arms 2 to telescopically move, the input end of the driving component 5 extends to the outside of the cross-shaped sleeve 1, and is fixedly connected with a nut 7.

[0022] A gear 8 is fixedly connected to the inner side of the nut 7 , a receiving box 6 is fixedly connected to the front side of the cross sleeve 1 , and a telescopic rod 11 is telescopically provided at one end of the receiving box 6 close to the nut 7 .

[0023] One end of the telescopic rod 11 is fixedly connected to a rack plate 12 adapted to the gear 8 , and the inner cavity of the accommodating box 6 is provided with a transmission structure for driving the telescopic rod 11 to telescope and move.

[0024] After the nut 7 is twisted to drive the driving assembly 5 to work, the multiple telescopic arms 2 can be driven to telescopically move, and then adapted to different universal joint forks for use.

[0025] During the rotation of the nut 7, the gear 8 is driven to rotate together. After the nut 7 is rotated, the telescopic rod 11 can be moved to drive the rack plate 12 to move toward the position of the gear 8. After the rack plate 12 is engaged with the surface of the gear 8, the nut 7 can be fixed after the rotation position.

[0026] The telescopic arm 2 is fixed after being extended and retracted, so as to improve the stability of the telescopic arm 2 after being extended and retracted, facilitate the assembly and use of the universal joint with universal joint forks of different specifications, and improve the working stability after the assembly is completed.

[0027] Furthermore, the four ends of the cross-shaped sleeve 1 are all provided with limit plates 4 adapted to the telescopic arm 2, and the outer end of the telescopic arm 2 is provided with an articulated shaft 3 adapted to the universal joint fork.

[0028] In this embodiment, the limit plate 4 and the hinge shaft 3 are prior art and will not be described in detail herein. The limit plate 4 is convenient for limiting the position of the telescopic arm 2 during the telescopic process.

[0029] Furthermore, the transmission structure includes a connecting block 10 and a connecting rod 13 . The connecting block 10 is slidably disposed in the inner cavity of the accommodating box 6 . The other end of the telescopic rod 11 is pulled and extended to the inner cavity of the accommodating box 6 and fixedly connected to the surface of the connecting block 10 .

[0030] The connecting rod 13 is fixedly connected to the surface of the telescopic rod 11 located in the inner cavity of the accommodating box 6, and the other end of the connecting rod 13 is movably extended to the outside of the accommodating box 6. The outer side surface of the connecting block 10 is fixedly connected with a spring 9 between the outer ends of the inner wall of the accommodating box 6.

[0031] In this embodiment, by pulling the outer end of the connecting rod 13, the connecting block 10 is driven to squeeze the spring 9 to contract and generate elastic force, which can drive the rack plate 12 away from the gear 8, so that the nut 7 can be rotated. After the nut 7 is rotated, the connecting rod 13 is loosened, and the connecting block 10 is pushed to move by the elastic force of the spring 9, and the rack plate 12 can be meshed with the gear 8 again.

[0032] Furthermore, a movable opening 15 for the connection rod 13 to move is formed on the side wall of the accommodating box 6 , and the movable opening 15 is convenient for guiding and limiting the connection rod 13 during its movement.

[0033] Furthermore, a pull handle 14 is fixedly connected to the outer end of the connecting rod 13 , and the pull handle 14 is convenient for a worker to operate the connecting rod 13 to move.

[0034] Furthermore, a plurality of reinforcing ribs 18 are fixedly connected to the surface of the cross-shaped shaft sleeve 1 , and the plurality of reinforcing ribs 18 strengthen the surface strength of the cross-shaped shaft sleeve 1 .

[0035] Furthermore, the outer surface of the cross sleeve 1 is coated with a primer layer 16 , and the outer surface of the primer layer 16 is coated with an anti-corrosion coating 17 .

[0036] In this embodiment, the primer layer 16 and the anti-corrosion coating 17 improve the anti-corrosion performance of the cross sleeve 1 and extend the service life of the cross sleeve 1 .

[0037] The working principle and use process of the utility model: After the utility model is installed, the nut 7 is twisted to drive the driving assembly 5 to work, so that multiple telescopic arms 2 can be driven to telescopically move, and then different universal joint forks can be adapted for use. During the rotation of the nut 7, the gear 8 is driven to rotate together. After the rotation of the nut 7 is completed, the telescopic rod 11 can be moved to drive the rack plate 12 to move toward the position of the gear 8. After the rack plate 12 is engaged with the surface of the gear 8, the nut 7 can be fixed after the rotation position, and then the telescopic arm 2 can be fixed after being telescoped, thereby improving the stability of the telescopic arm 2 after telescoped, and facilitating the assembly and use of the universal joint and universal joint forks of different specifications.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cross-axis universal joint for a vehicle, characterized in that: It comprises a cross-shaped shaft sleeve (1), the four ends of the cross-shaped shaft sleeve (1) are telescopically provided with telescopic arms (2), the inner cavity of the cross-shaped shaft sleeve (1) is provided with a driving component (5) for driving the four telescopic arms (2) to telescopically move, the input end of the driving component (5) extends to the outside of the cross-shaped shaft sleeve (1) and is fixedly connected with a nut (7); The inner side surface of the nut (7) is fixedly connected to a gear (8); the front side surface of the cross-shaped shaft sleeve (1) is fixedly connected to a accommodating box (6); a telescopic rod (11) is telescopically provided at one end of the accommodating box (6) close to the nut (7); one end of the telescopic rod (11) is fixedly connected to a rack plate (12) adapted to the gear (8); and a transmission structure for driving the telescopic rod (11) to telescopically move is provided in the inner cavity of the accommodating box (6).

2. A cross-axis universal joint for a vehicle as claimed in claim 1, characterized in that: The four ends of the cross-shaped shaft sleeve (1) are each provided with a limit plate (4) adapted to the telescopic arm (2), and the outer end of the telescopic arm (2) is provided with a hinge shaft (3) adapted to the universal joint fork.

3. A cross-axis universal joint for a vehicle as claimed in claim 1, characterized in that: The transmission structure comprises a connecting block (10) and a connecting rod (13); the connecting block (10) is slidably arranged in the inner cavity of the accommodating box (6); the other end of the telescopic rod (11) is pulled out and extended to the inner cavity of the accommodating box (6) and is fixedly connected to the surface of the connecting block (10); the connecting rod (13) is fixedly connected to the surface of the telescopic rod (11) located in the inner cavity of the accommodating box (6); the other end of the connecting rod (13) is movably extended to the outside of the accommodating box (6); and a spring (9) is fixedly connected between the outer side surface of the connecting block (10) and the outer end of the inner wall of the accommodating box (6).

4. A cross-axis universal joint for a vehicle as claimed in claim 3, characterized in that: The side wall of the containing box (6) is provided with a movable opening (15) for the connecting rod (13) to move.

5. A cross-axis universal joint for a vehicle as claimed in claim 3, characterized in that: The outer end of the connecting rod (13) is fixedly connected to a pull handle (14).

6. A cross-axis universal joint for a vehicle as claimed in claim 1, characterized in that: A plurality of reinforcing ribs (18) are fixedly connected to the surface of the cross-shaped shaft sleeve (1).

7. A cross-axis universal joint for a vehicle as claimed in claim 1, characterized in that: The outer surface of the cross-shaped shaft sleeve (1) is coated with a primer layer (16), and the outer surface of the primer layer (16) is coated with an anti-corrosion coating (17).

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