A special bearing for automotive gearboxes

Abstract

This utility model discloses a special bearing for automotive transmissions, relating to the field of automotive transmission bearing technology. Its key technical features include an automotive transmission bearing body comprising an outer shell and an inner ring, with a rotating assembly installed between the outer shell and the inner ring; two dust covers symmetrically fitted onto the inner sides of both ends of the automotive transmission bearing body; and an oil injection sealing assembly threadedly connected to the inner ring. This threaded connection facilitates installation and removal via tool rotation. When the oil injection sealing assembly is opened, lubricating oil can be injected into the inner ring. During rotation, the inner ring can fling out the internal lubricating oil for lubrication. Lubrication effectively reduces friction and improves the overall service life.

Description

Technical Field

[0001] This utility model relates to the field of automotive transmission bearing technology, specifically a special bearing for automotive transmissions. Background Technology

[0002] Automotive transmission bearings are key components in automotive transmission assemblies. They are mainly used to support the drive shaft, reduce friction, and ensure rotational accuracy. They play an important role in the operation of car transmissions and can effectively improve the efficiency and smoothness of the transmission.

[0003] The existing Chinese patent CN207421145U relates to a long-life automotive transmission bearing, comprising an outer ring and an inner ring, with a plurality of balls evenly distributed between the outer and inner rings. Each ball has an integrally mounted retainer on its outer side. Dust covers are symmetrically mounted on both sides of the outer and inner rings. These dust covers are planar, with their upper and lower ends embedded in limiting annular grooves on the inner and outer sides of the outer and inner rings, respectively. Cross-shaped through-grooves are evenly arranged around the circumference of the dust covers. A pair of axial sealing rings are embedded side-by-side on the inner wall of the inner ring. The diameter of the balls is 9.525 mm.

[0004] However, in actual use, the balls between the inner and outer rings of the device will generate friction when rotating. Lubricating oil can effectively reduce friction. However, after each period of use, the lubricating oil needs to be added again. There is no corresponding lubrication point, and the dust cover needs to be opened to add lubricating oil each time it is added, which is not very efficient.

[0005] Therefore, we propose a novel type of bearing specifically designed for automotive transmissions to solve the aforementioned technical problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a special bearing for automotive transmissions, which solves the problem that existing special bearings for automotive transmissions lack a corresponding location for adding lubricating oil.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a special bearing for automotive gearboxes, comprising:

[0010] An automotive transmission bearing body, the automotive transmission bearing body comprising an outer shell and an inner ring, wherein a rotating assembly is installed between the outer shell and the inner ring;

[0011] Two dust covers are symmetrically fitted onto the inner sides of both ends of the automotive gearbox bearing body;

[0012] The oil injection and sealing assembly is threadedly connected to the inner ring.

[0013] Preferably, the inner ring includes an inner shell, an oil storage cavity is formed on the inner side of the outer end of the inner shell, and an oil discharge ring cavity is formed on the outer side of the oil storage cavity through the inner shell.

[0014] Preferably, the rotating assembly includes an oil-permeable retainer, and two retainer-wrapped corrugated plates are symmetrically fixed to the outer surface of the oil-permeable retainer. The two retainer-wrapped corrugated plates are fixedly connected by closed rivets. An internal cavity is formed between the two retainer-wrapped corrugated plates, and a rolling element is installed on the inner side of the internal cavity within the retainer-wrapped corrugated plates.

[0015] Preferably, the oil leakage retainer includes an outer collar, an inner collar is fixedly connected to the inner wall of the outer collar, and oil leakage holes are arranged in a circumferential array on the inner sides of the outer collar and the inner collar.

[0016] Preferably, the outer collar is fixed to the oil drain ring cavity of the inner shell through the inner collar.

[0017] Preferably, the oil injection and sealing assembly includes a nut, and a sealing screw is fixedly connected to the middle of the inner end of the nut. The sealing screw is threadedly rotatably connected to the inner housing.

[0018] Preferably, the sealing screw is threaded into the oil filling screw hole of the inner housing.

[0019] Preferably, the top of the nut is aligned with the outer end of the inner shell.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model provides a special bearing for automotive gearboxes, which has the following advantages:

[0022] 1. The oil injection sealing component of this utility model is threadedly connected to the inner ring. The threaded connection makes it easy to install and remove by rotating the thread with tools. When the oil injection sealing component is opened, lubricating oil can be injected into the inner ring. When the inner ring rotates, the internal lubricating oil can be thrown out for lubrication. Lubrication can effectively reduce friction and effectively improve the overall service life.

[0023] 2. This utility model, by setting an oil seepage retainer structure, can seep out oil for lubrication. The outer collar and the inner side of the inner collar of the oil seepage retainer are provided with oil seepage holes distributed in a circumferential array. Through the oil seepage holes on the outer collar and the inner side of the inner collar, lubricating oil can be effectively discharged for lubrication.

[0024] 3. This utility model, through the setting of an oil injection and sealing component structure, can effectively seal the oil. The sealing screw of the oil injection and sealing component is threadedly connected to the oil injection screw hole of the inner shell. When installed, the sealing screw can effectively seal the oil injection screw hole of the inner shell, effectively preventing oil leakage. Furthermore, the sealing screw effectively prevents the entry of external substances, thus playing a role in isolation and sealing protection. The oil injection screw hole of the inner shell is connected to the oil storage chamber, and personnel can add lubricating fluid to the oil storage chamber through the oil injection screw hole using an oil injection tool such as a syringe. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the regional cross-sectional structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the lubrication inner ring of this utility model;

[0028] Figure 4 This is a schematic diagram of the oil leakage retainer structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the oil injection and sealing component of this utility model.

[0030] In the picture:

[0031] 1. Outer shell; 2. Inner shell; 21. Oil drain ring cavity; 22. Oil reservoir cavity; 3. Nut; 31. Sealing screw; 4. Dust cover; 5. Cage wrapping; 51. Closing rivet; 52. Inner sleeve cavity; 6. Rolling element; 7. Outer sleeve; 71. Oil seepage hole; 72. Inner sleeve. Detailed Implementation

[0032] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] Example 1

[0034] This embodiment provides a technical solution: a special bearing for automotive gearboxes, such as... Figure 1 As shown, it includes the automotive gearbox bearing body, two dust covers 4, and an oil filling seal assembly.

[0035] The automotive transmission bearing body includes an outer shell 1 and an inner ring. A rotating assembly is installed between the outer shell 1 and the inner ring. The inner ring can rotate circumferentially inside the outer shell 1 through the rotating assembly. Two dust covers 4 are symmetrically fitted onto the inner sides of both ends of the automotive transmission bearing body. They can be installed and placed accordingly to seal and block dust, effectively preventing dust from entering and avoiding excessive friction caused by excessive dust. They can effectively isolate and protect the bearing. The oil filling and sealing assembly is threadedly connected to the inner ring. The threaded connection makes it easy to install and remove by rotating the thread with tools, making installation and removal more convenient.

[0036] The inner ring includes an inner shell 2. An oil storage cavity 22 is provided on the inner side of the outer end of the inner shell 2, which can store injected lubricating oil. An oil discharge ring cavity 21 is provided on the outer side of the oil storage cavity 22 through the inner shell 2. The lubricating oil stored in the oil storage cavity 22 can be effectively discharged through the oil discharge ring cavity 21.

[0037] The rotating assembly includes an oil-permeable retainer. Two retainer-enclosed corrugated plates 5 are symmetrically fixed to the outer surface of the oil-permeable retainer. The retainer-enclosed corrugated plates 5 can be stably placed on the oil-permeable retainer. The two retainer-enclosed corrugated plates 5 are fixedly connected by a closing rivet 51, which can be effectively connected together for placement. An internal cavity 52 is opened between the two retainer-enclosed corrugated plates 5, which can effectively limit the installation. A rolling element 6 is installed on the inner side of the internal cavity 52 in the retainer-enclosed corrugated plates 5. The retainer-enclosed corrugated plates 5 can rotate and make rolling contact with the outside through the rolling element 6.

[0038] Example 2

[0039] This embodiment is a further optimization based on Embodiment 1. The parts that are the same as those described above will not be repeated here. Figures 2-4 As shown, to further better realize this utility model, the following arrangement is specifically adopted: the oil seepage retainer includes an outer collar 7, and an inner collar 72 is fixedly connected to the inner wall of the outer collar 7. The outer collar 7 and the inner collar 72 can be stably installed and placed. The inner sides of the outer collar 7 and the inner collar 72 are provided with oil seepage holes 71 distributed in a circumferential array. Through the oil seepage holes 71 on the inner sides of the outer collar 7 and the inner collar 72, lubricating oil can be effectively discharged for lubrication.

[0040] The outer collar 7 is fixed to the oil drain ring cavity 21 of the inner housing 2 through the inner collar 72, and can be installed accordingly. The inner collar 72 can effectively seal the oil drain ring cavity 21 of the inner housing 2, so that the oil discharged from the oil drain ring cavity 21 can effectively seep out for lubrication through the oil seepage holes 71 of the outer collar 7 and the inner collar 72.

[0041] The oil filling and sealing assembly includes a nut 3, which can be rotated by a tool. A sealing screw 31 is fixedly connected to the middle of the inner end of the nut 3. When the nut 3 rotates, it can drive the sealing screw 31 to rotate. The sealing screw 31 is threadedly connected to the inner housing 2 and can rotate on the inner housing 2.

[0042] The sealing screw 31 is threaded into the oil filling screw hole of the inner housing 2. When installed, the sealing screw 31 can effectively seal the oil filling screw hole of the inner housing 2, which can effectively prevent oil leakage. Furthermore, the sealing screw 31 effectively prevents the entry of external substances, thus playing a role in isolation and sealing protection. The oil filling screw hole of the inner housing 2 is connected to the oil storage chamber 22. Personnel can add lubricating fluid to the oil storage chamber 22 through the oil filling screw hole using an oiling tool such as a syringe.

[0043] The top of the nut 3 is aligned with the outer end of the inner shell 2. When the outer ends are aligned, there will be no obstruction during installation and use.

[0044] Working principle: The automotive gearbox bearing body includes an outer shell 1 and an inner ring. A rotating assembly is installed between the outer shell 1 and the inner ring, allowing the inner ring to rotate inside the outer shell 1 via the rotating assembly.

[0045] Two dust caps 4 are symmetrically fitted onto the inner sides of both ends of the automotive gearbox bearing body. They can be installed and positioned accordingly to seal and block dust, effectively preventing dust from entering and avoiding excessive friction caused by excessive dust, thus providing effective isolation and protection. The oil filling and sealing assembly is threaded onto the inner ring. The threaded connection facilitates installation and removal by rotating the thread with tools. The sealing screw 31 of the oil filling and sealing assembly is threaded into the oil filling screw hole of the inner housing 2. During installation, the sealing screw 31 can effectively seal the oil filling screw hole of the inner housing 2, effectively preventing oil leakage. Furthermore, the sealing screw 31 effectively prevents the entry of external substances, providing isolation and protection. The oil filling screw hole of the inner housing 2 is connected to the oil storage chamber 22. Personnel can add lubricant to the oil storage chamber 22 through the oil filling screw hole using an oil filling tool such as a syringe. When the oil filling and sealing assembly is opened, lubricating oil can be injected into the inner ring. As the inner ring rotates, it can throw out the internal lubricating oil for lubrication. Lubrication can effectively reduce friction and effectively improve the overall service life.

[0046] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A special bearing for automotive transmissions, characterized in that, include: The automotive transmission bearing body includes an outer shell (1) and an inner ring, and a rotating assembly is installed between the outer shell (1) and the inner ring. Two dust covers (4) are symmetrically fitted onto the inner sides of both ends of the automobile gearbox bearing body; The oil injection and sealing assembly is threadedly connected to the inner ring.

2. The automotive transmission bearing according to claim 1, characterized in that: The inner ring includes an inner shell (2), an oil storage cavity (22) is provided on the inner side of the outer end of the inner shell (2), and an oil discharge ring cavity (21) is provided on the outer side of the oil storage cavity (22) through the inner shell (2).

3. The automotive transmission bearing according to claim 1, characterized in that: The rotating assembly includes an oil-permeable retainer, on which two retainer-wrapped corrugated plates (5) are symmetrically fixed. The two retainer-wrapped corrugated plates (5) are fixedly connected by a closed rivet (51). An internal cavity (52) is provided between the two retainer-wrapped corrugated plates (5). A rolling element (6) is installed inside the retainer-wrapped corrugated plate (5) on the inner side of the internal cavity (52).

4. The automotive transmission bearing according to claim 3, characterized in that: The oil seepage retainer includes an outer collar (7), and an inner collar (72) is fixedly connected to the inner wall of the outer collar (7). The inner sides of the outer collar (7) and the inner collar (72) are provided with oil seepage holes (71) distributed in a circumferential array.

5. The automotive transmission bearing according to claim 4, characterized in that: The outer collar (7) is fixed to the oil drain ring cavity (21) of the inner shell (2) through the inner collar (72).

6. The automotive transmission bearing according to claim 1, characterized in that: The oil filling and sealing assembly includes a nut (3), and a sealing screw (31) is fixedly connected to the middle of the inner end of the nut (3). The sealing screw (31) is threadedly rotatably connected to the inner shell (2).

7. The automotive transmission bearing according to claim 6, characterized in that: The sealing screw (31) is threaded into the oil filling screw hole of the inner shell (2).

8. A special bearing for automotive transmissions according to claim 6, characterized in that: The top of the nut (3) is aligned with the outer end of the inner shell (2).

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