Cross universal joint assembly

Abstract

The utility model discloses a cross universal joint assembly, relates to the technical field of cross universal joints, solves the problems that most cross universal joint assemblies in the prior art are poor in sealing performance, oil stains and dust are accumulated to form dirt which is difficult to remove, and then rotation of the cross universal joints is influenced, and comprises a cross shaft, a shaft head and a bearing sleeve, the four shaft heads are respectively located on the outer wall of the cross shaft, the four shaft heads and the cross shaft are integrally formed, the four bearing sleeves are respectively and movably connected to the ends, away from the cross shaft, of the shaft heads in a sleeving mode, sealing shells are arranged at the connecting positions of the bearing sleeves and the shaft heads, and reinforcing assemblies are arranged between the sealing shells and the bearing sleeves. The gap between the shaft head and the bearing sleeve is sealed through the sealing shell, meanwhile, the sealing shell can rotate along with the bearing sleeve, it is avoided as much as possible that dust is stored in the gap between the shaft head and the bearing sleeve and influences rotation of the bearing sleeve after a long time, and in addition, the firmness among the shaft head, the sealing shell and the bearing sleeve structure is enhanced through the reinforcing assembly.

Description

Technical Field

[0001] The utility model relates to the field of cross universal joints, in particular to a cross universal joint assembly. Background Art

[0002] The cross shaft (a component that realizes variable-angle power transmission) generally refers to the universal joint. The universal joint is a universal joint, which is a component that realizes variable-angle power transmission. It is used in positions where the direction of the line needs to be changed. It is the "joint" component of the universal joint device of the automobile drive system. The combination of the universal joint and the universal joint is called a universal joint transmission device.

[0003] However, most of the cross universal joint assemblies in the prior art have poor sealing performance. When in use, there is a gap between the bearing sleeve and the shaft head. Long-term use can easily cause dust to accumulate in the gap, or internal lubricating oil to leak out. Oil and dust accumulate to form dirt that is difficult to remove, thereby affecting the rotation of the cross universal joint. Utility Model Content

[0004] In order to improve the problem that most cross universal joint assemblies in the prior art have poor sealing performance, oil and dust accumulate to form dirt that is difficult to remove, and further affect the rotation of the cross universal joint, the utility model provides a cross universal joint assembly.

[0005] The utility model provides a cross universal joint assembly, which adopts the following technical solutions:

[0006] A cross universal joint assembly includes a cross shaft, a shaft head and a bearing sleeve, wherein four shaft heads are provided and are respectively located on the outer wall of the cross shaft, and the four shaft heads are integrally formed with the cross shaft, and four bearing sleeves are provided and are respectively movably sleeved on one end of the shaft head away from the cross shaft, and a sealing shell is provided at the connection between the bearing sleeve and the shaft head, and a reinforcement component is provided between the sealing shell and the bearing sleeve.

[0007] By adopting the above technical solution, the four bearing sleeves are all sleeved on the shaft head port, and each bearing sleeve can rotate along the shaft head. The gap between the shaft head and the bearing sleeve is sealed by the sealing shell. At the same time, the sealing shell can rotate with the bearing sleeve to avoid dust storage in the gap between the shaft head and the bearing sleeve, which may affect the rotation of the bearing sleeve after a long time. In addition, the firmness between the shaft head, the sealing shell and the bearing sleeve structure is enhanced by the reinforcement component.

[0008] Optionally, a sealing gasket is disposed inside the sealing shell, and the sealing gasket is disposed between the sealing shell and the bearing sleeve.

[0009] By adopting the above technical solution, the sealing gasket can be made of rubber material, and the sealing effect of the gap between the shaft head and the bearing sleeve can be further improved by the sealing gasket.

[0010] Optionally, the sealing shell is provided with a plurality of first fixing holes at equal intervals on the circumference, the sealing gasket is provided with a plurality of second fixing holes at equal intervals on the circumference, and the second fixing holes are connected to the first fixing holes;

[0011] The bearing sleeve is slidably connected with a plurality of elastic plug-in blocks at equal intervals on the circumference, and the elastic plug-in blocks are plugged between the corresponding first fixing holes and the second fixing holes.

[0012] By adopting the above technical solution, the elastic insert block can shrink along the bearing sleeve, and the bearing sleeve is connected to the shaft head while passing through the second fixing hole and inserted into the first fixing hole, so that the bearing sleeve and the sealing shell are fixedly connected as one through the elastic insert block, and the firmness of the connection between the bearing sleeve and the shaft head is also improved.

[0013] Optionally, a connecting seat is movably connected to the outer wall of the shaft head.

[0014] By adopting the above technical solution, the elastic insert block can shrink along the bearing sleeve, and the bearing sleeve is connected to the shaft head while passing through the second fixing hole and inserted into the first fixing hole, so that the bearing sleeve and the sealing shell are fixedly connected as one through the elastic insert block, and the firmness of the connection between the bearing sleeve and the shaft head is also improved.

[0015] Optionally, the reinforcement assembly includes an outer shell, a slider and a connecting rod, the outer shell is provided with multiple sliders fixedly connected to the outer wall of the connecting seat at equal circumferential intervals, the sliders are slidably connected to the interior of the outer shell, the connecting rods are arranged in an L shape, one end of the connecting rod is fixedly connected to the slider, and the other end of the connecting rod is fixedly connected to the sealing shell.

[0016] By adopting the above technical solution, the connecting seat can adopt a bearing, which mainly plays the role of supporting the reinforcement component and ensuring that the reinforcement component can rotate with the sealing shell.

[0017] Optionally, the inside of the shell is fixedly connected with a guide rod, and the sliding blocks are slidably connected to the guide rod.

[0018] By adopting the above technical solution, the sealing shell and the outer shell are connected as one body through the connecting rod, and the sealing shell can be driven to slide and be adjusted through the sliding block.

[0019] Optionally, a spring is sleeved on the outer side of the guide rod, and the spring is fixedly connected between the slider and the inner wall of the shell.

[0020] By adopting the above technical solution, the firmness between the shaft head, the sealing shell and the bearing sleeve structure is ensured by the pull-back force of the spring.

[0021] Optionally, an oil nipple is provided on the front side of the cross shaft.

[0022] By adopting the above technical solution, lubricating oil can be added to the interior of the cross shaft through the oil nozzle.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. The four bearing sleeves of the utility model are all sleeved at the shaft head port, and each bearing sleeve can rotate along the shaft head. The gap between the shaft head and the bearing sleeve is sealed by the sealing shell. The sealing gasket can be made of rubber material. The sealing effect of the gap between the shaft head and the bearing sleeve is further improved by the sealing gasket. At the same time, the sealing shell can rotate with the bearing sleeve to avoid dust from being stored in the gap between the shaft head and the bearing sleeve as much as possible, which will affect the rotation of the bearing sleeve after a long time.

[0025] 2. The utility model strengthens the firmness between the shaft head, the sealing shell and the bearing sleeve structure through the reinforcement component. The fixed connection between the outer shell and the connecting seat plays a major supporting role. The sealing shell and the outer shell are connected as a whole through the connecting rod. The sealing shell can be driven to slide for adjustment through the slider. The stability of the slider displacement is improved through the guide rod. The firmness between the shaft head, the sealing shell and the bearing sleeve structure is ensured by the return force of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model.

[0027] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model.

[0028] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0029] Figure 4 It is a side sectional schematic diagram of the reinforcement component of the utility model.

[0030] Description of reference numerals:

[0031] 1. Cross shaft; 2. Oil nozzle; 3. Shaft head; 4. Bearing sleeve; 401. Elastic plug; 5. Sealing shell; 501. First fixing hole; 6. Sealing gasket; 601. Second fixing hole; 7. Connecting seat; 8. Reinforcement assembly; 801. Housing; 802. Slider; 803. Connecting rod; 804. Guide rod; 805. Spring. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] Please refer to Figure 1-3A cross universal joint assembly includes a cross shaft 1, a shaft head 3 and a bearing sleeve 4. The shaft heads 3 are provided with four and are respectively located on the outer wall of the cross shaft 1. The four shaft heads 3 are integrally formed with the cross shaft 1. The bearing sleeves 4 are provided with four and are respectively movably sleeved on the end of the shaft head 3 away from the cross shaft 1. A sealing shell 5 is provided at the connection between the bearing sleeve 4 and the shaft head 3. A reinforcement component 8 is provided between the sealing shell 5 and the bearing sleeve 4. In this cross universal joint assembly, the four bearing sleeves 4 are sleeved at the port of the shaft head 3, and each bearing sleeve 4 can rotate along the shaft head 3. The gap between the shaft head 3 and the bearing sleeve 4 is sealed by the sealing shell 5. At the same time, the sealing shell 5 can rotate with the bearing sleeve 4 to avoid dust storage in the gap between the shaft head 3 and the bearing sleeve 4 as much as possible, which will affect the rotation of the bearing sleeve 4 after a long time. In addition, the reinforcement component 8 is used to strengthen the firmness of the shaft head 3, the sealing shell 5 and the bearing sleeve 4 structure.

[0034] Please refer to Figure 2 A sealing gasket 6 is disposed inside the sealing shell 5 , and the sealing gasket 6 is disposed between the sealing shell 5 and the bearing sleeve 4 . More specifically, the sealing gasket 6 can be made of rubber material, and the sealing gasket 6 can further enhance the sealing effect of the gap between the shaft head 3 and the bearing sleeve 4 .

[0035] Please refer to Figure 2 The sealing shell 5 is provided with a plurality of first fixing holes 501 at equal intervals on the circumference, and the sealing gasket 6 is provided with a plurality of second fixing holes 601 at equal intervals on the circumference, and the second fixing holes 601 are connected to the first fixing holes 501;

[0036] The bearing sleeve 4 is slidably connected with a plurality of elastic plug blocks 401 at equal intervals around the circumference. The elastic plug blocks 401 are all inserted between the corresponding first fixing holes 501 and the second fixing holes 601. More specifically, the elastic plug blocks 401 can shrink radially along the bearing sleeve 4. While the bearing sleeve 4 is connected to the shaft head 3, it passes through the second fixing hole 601 and is inserted into the first fixing hole 501. As a result, the bearing sleeve 4 and the sealing shell 5 are fixedly connected as one through the elastic plug blocks 401, and the firmness of the connection between the bearing sleeve 4 and the shaft head 3 is also improved.

[0037] Please refer to Figure 1-Figure 3 The outer wall of the shaft head 3 is movably connected with a connecting seat 7. More specifically, the connecting seat 7 can adopt a bearing, which mainly supports the reinforcement component 8 to ensure that the reinforcement component 8 can rotate with the sealing shell 5.

[0038] Please refer to Figure 3 and Figure 4The reinforcement component 8 includes a shell 801, a slider 802 and a connecting rod 803. The shell 801 is provided with multiple sliders 802 and fixedly connected to the outer wall of the connecting seat 7 at equal intervals on the circumference. The sliders 802 are all slidably connected to the inside of the shell 801. The connecting rods 803 are all arranged in an L shape. One end of the connecting rod 803 is fixedly connected to the slider 802, and the other end of the connecting rod 803 is fixedly connected to the sealing shell 5. More specifically, the shell 801 is fixedly connected to the connecting seat 7 to play a major supporting role. The sealing shell 5 is connected to the shell 801 as a whole through the connecting rod 803. The sealing shell 5 can be driven to slide for adjustment through the slider 802.

[0039] Please refer to Figure 4 The interior of the housing 801 is fixedly connected with a guide rod 804 , and the sliders 802 are slidably connected to the guide rod 804 . More specifically, the stability of the displacement of the sliders 802 is improved by the guide rod 804 .

[0040] Please refer to Figure 4 The outer side of the guide rod 804 is sleeved with a spring 805, and the spring 805 is fixedly connected between the slider 802 and the inner wall of the shell 801. More specifically, the firmness of the shaft head 3, the sealing shell 5 and the bearing sleeve 4 is ensured by the pullback force of the spring 805.

[0041] Please refer to Figure 1 An oil nozzle 2 is provided on the front side of the cross shaft 1 . More specifically, lubricating oil can be added to the interior of the cross shaft 1 through the oil nozzle 2 .

[0042] The implementation principle of the utility model is as follows: the four bearing sleeves 4 are all sleeved on the ends of the shaft head 3, and each bearing sleeve 4 can rotate along the shaft head 3, and the gap between the shaft head 3 and the bearing sleeve 4 is sealed by the sealing shell 5, and the sealing gasket 6 can be made of rubber material, and the sealing effect of the gap between the shaft head 3 and the bearing sleeve 4 is further improved by the sealing gasket 6, and at the same time the sealing shell 5 can rotate with the bearing sleeve 4 to avoid dust from being stored in the gap between the shaft head 3 and the bearing sleeve 4 as much as possible, which will affect the rotation of the bearing sleeve 4 after a long time, and in addition, the firmness between the shaft head 3, the sealing shell 5 and the bearing sleeve 4 structure is strengthened by the reinforcement component 8.

[0043] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A cross universal joint assembly, comprising a cross shaft (1), a shaft head (3) and a bearing sleeve (4), characterized in that: The shaft heads (3) are provided in four numbers and are respectively located on the outer wall of the cross shaft (1); the four shaft heads (3) are integrally formed with the cross shaft (1); the bearing sleeves (4) are provided in four numbers and are respectively movably sleeved on one end of the shaft head (3) away from the cross shaft (1); a sealing shell (5) is provided at the connection between the bearing sleeve (4) and the shaft head (3); and a reinforcement component (8) is provided between the sealing shell (5) and the bearing sleeve (4).

2. A cross universal joint assembly according to claim 1, characterized in that: A sealing gasket (6) is provided inside the sealing shell (5), and the sealing gasket (6) is provided between the sealing shell (5) and the bearing sleeve (4).

3. A cross universal joint assembly according to claim 2, characterized in that: The sealing shell (5) is provided with a plurality of first fixing holes (501) at equal intervals around the circumference, the sealing gasket (6) is provided with a plurality of second fixing holes (601) at equal intervals around the circumference, and the second fixing holes (601) are connected to the first fixing holes (501); The bearing sleeve (4) is slidably connected to a plurality of elastic plug blocks (401) at equal intervals around the circumference, and the elastic plug blocks (401) are all plugged between the corresponding first fixing holes (501) and the second fixing holes (601).

4. A cross universal joint assembly according to claim 1, characterized in that: A connecting seat (7) is movably connected to the outer wall of the shaft head (3).

5. A cross universal joint assembly according to claim 4, characterized in that: The reinforcement assembly (8) comprises a housing (801), a slider (802) and a connecting rod (803); the housing (801) is provided with a plurality of sliders (802) fixedly connected to the outer wall of the connecting seat (7) at circumferentially equal intervals; the sliders (802) are all slidably connected to the interior of the housing (801); the connecting rods (803) are all arranged in an L shape; one end of the connecting rod (803) is fixedly connected to the slider (802), and the other end of the connecting rod (803) is fixedly connected to the sealing shell (5).

6. A cross universal joint assembly according to claim 5, characterized in that: The interior of the housing (801) is fixedly connected with a guide rod (804), and the sliding blocks (802) are slidably connected to the guide rod (804).

7. A cross universal joint assembly according to claim 6, characterized in that: The outer sides of the guide rods (804) are sleeved with springs (805), and the springs (805) are fixedly connected between the slider (802) and the inner wall of the housing (801).

8. The cross universal joint assembly according to claim 1, characterized in that: An oil nozzle (2) is provided on the front side of the cross shaft (1).

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