Hub sealing cover

Abstract

The hub sealing cover comprises a gland and a shell, a cavity is formed between the gland and the shell, a plugging piece and a perspective window are arranged in the cavity, the perspective window is composed of a cylinder and a circular ring located at one end of the cylinder, one end of the cylinder is sealed, the other end of the cylinder is open, and the coaxial circular ring is formed outwards at the position of the opening along the opening. The plugging piece is buckled on the perspective window through the cylinder opening, and the hole inner ring groove of the plugging piece is buckled with the inner oil-proof cover. And a plurality of oil guide holes penetrating through the side wall of the cylinder are formed in the perspective window. According to the hub sealing cover, leakage of hub lubricating oil can be avoided, after assembly, the problem of leakage of the hub lubricating oil can be effectively solved, and meanwhile water is prevented from entering the hub.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to a wheel hub sealing cover. Background Art

[0002] The wheel hub sealing cover is a cover installed on the outside of the wheel hub of the automobile axle. The wheel hub is sealed by the wheel hub sealing cover, and the condition of the gear lubricating oil in the wheel hub can be visually inspected. It can also discharge the high-temperature gas generated when the wheel hub is at high temperature, thereby reducing the temperature inside the wheel hub and extending the service life of the vehicle.

[0003] The wheel hub sealing cover in the prior art is made of aluminum and is installed on the wheel hub. The air is exhausted through the straight air holes set on the rubber plug. When the vehicle is tilted left or right, the oil level of the wheel hub exceeds the position of the straight air holes, and oil leakage will occur. When the vehicle is wading or washing, due to the presence of the straight air holes, water will flow into the inside of the wheel hub along the straight air holes, causing the lubricating oil to deteriorate. The existing wheel hub sealing cover is usually a cylindrical structure, and the connecting end face with the wheel hub will warp and deform due to the force, resulting in a high proportion of oil leakage from the wheel hub sealing cover. Therefore, the technical problem of how to avoid leakage of wheel hub lubricating oil becomes the key technical problem to be solved in this scheme. Utility Model Content

[0004] The utility model aims to provide a wheel hub sealing cover, which solves the technical problem of how to avoid leakage of wheel hub lubricating oil. After assembly, the problem of leakage of wheel hub lubricating oil can be effectively prevented, and water can be prevented from entering the wheel hub.

[0005] A novel wheel hub sealing cover comprises a gland and a shell, a cavity is formed between the gland and the shell, a sealing piece and a perspective window are arranged in the cavity, the perspective window is composed of a cylinder and a circular ring located at one end of the cylinder, one end of the cylinder is sealed and the other end is open, a coaxial circular ring is formed outwardly along the opening at the position of the opening, the sealing piece is buckled on the perspective window through the opening of the cylinder, the annular groove in the hole of the sealing piece is buckled with the inner oil shield; the circular ring is arranged at the outer side of the opening.

[0006] Furthermore, the perspective window is provided with a plurality of oil guide holes penetrating the side wall of the cylinder.

[0007] Furthermore, the plurality of oil guide holes are evenly distributed on the same circular surface along the side wall of the cylinder and coaxial with the center axis of the cylinder.

[0008] Furthermore, the circular ring of the perspective window is provided with a lower oil level limit and an upper oil level limit which are coaxial with the circular ring, and the lower oil level limit is located outside the upper oil level limit.

[0009] Furthermore, one end of the blocking piece is a circular surface, and the other end forms a buckling structure on one side of the circular surface that buckles with the inside of the cylindrical body of the perspective window.

[0010] Furthermore, the blocking member is provided with a rectangular inner ring groove, and the inner and outer sides of the installation entrance end are buckling structures with conical chamfers, and the outer circle is buckled with the perspective window.

[0011] Furthermore, the inner oil-proof cover has five ventilation holes on its end surface, one hole in the center of the end cover, and the other four holes are evenly distributed on the circumference with the center hole as a reference.

[0012] Furthermore, the center of the circular surface of the blocking piece is a straight-line air vent, and three discontinuous deceleration channels are arranged on the circular surface. The deceleration channels radiate from the center of the circular surface to the surroundings to form a maze shape.

[0013] Furthermore, the blocking member is a rubber member.

[0014] Furthermore, an inner ring and an outer ring are arranged on the outer surface of the gland, and the inner ring and the outer ring are connected by four reinforcing ribs, and the reinforcing ribs are distributed between the inner ring and the outer ring.

[0015] Furthermore, the outer ring is provided with 6 evenly distributed mounting holes, and the outer ring is provided with 6 evenly distributed arc grooves.

[0016] A sealing gasket 1 is arranged between the contact surface of the gland and the shell, a sealing gasket 2 is arranged between the contact surface of the perspective window and the shell, and a gasket is arranged at one end of the shell away from the gland.

[0017] Furthermore, the shell is a cavity structure, with 6 threaded holes evenly distributed around the circumference on its small end face, and 6 mounting holes evenly distributed around the circumference on the large end face; an oil filling hole is provided at the upper end of the shell; and the circumference of the shell is provided with 6 evenly distributed arc grooves.

[0018] Furthermore, a screw is provided on each mounting hole 2 on the large end surface of the shell.

[0019] Furthermore, a screw plug is arranged at the upper end of the shell, and a magnetic cylinder is installed on the screw plug; an O-ring is installed at the upper end of the screw plug.

[0020] The positive effects of the utility model are as follows:

[0021] (1) The utility model solves the problem of water seepage from the wheel hub and oil seepage from the straight-line vent hole when the vehicle tilts left or right. By arranging a gas labyrinth channel on the rubber plugging piece, when the vehicle is wading or washing, the water enters the wheel hub in the form of a fluid and passes through the gas labyrinth channel for buffering during the period from the time when the water enters the wheel hub to the time when the wheel leaves the water area, thereby delaying the time when the water enters the wheel hub bearing.

[0022] When the vehicle leaves and is no longer in a water environment, the water that has entered the surface of the sealing piece will automatically flow out of the sealing cover as the wheels rotate;

[0023] (2) The introduction of the perspective window allows the lubricating oil to pass through the cavity between the perspective window and the plugging piece when the vehicle is tilted left or right, and then return to the wheel hub bearing through the oil guide hole on the perspective window, without leaking out through the straight-line air vent in the center of the plugging piece;

[0024] The present application still has the function of observing the amount of oil used and the purity of the oil through the perspective window, so as to timely grasp the condition of the oil.

[0025] (3) The hub cover assemblies currently used in the market are all cylindrical structures. Compared with the existing structures, the shell and the pressure cover of this structure have an arc groove, which enhances the anti-deformation ability of the end surface connecting the shell and the hub, reduces the deformation of the rear end surface of the hub sealing cover and the hub after installation, and thus prevents the occurrence of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural cross-sectional view of the present utility model.

[0027] Figure 2 It is a cross-sectional view of the perspective window of the utility model along the central axis.

[0028] Figure 3 It is the front view of the inner oil-proof cover of the utility model.

[0029] Figure 4 It is the front view of the plugging member of the utility model.

[0030] Figure 5 It is a cross-sectional view of the plugging member of the utility model along the central axis.

[0031] Figure 6 It is the front view of the gland of the utility model.

[0032] Figure 7 It is an oblique view of the shell of the utility model.

[0033] Among them, the markings are as follows: 1. Pressure cap; 2. Shell; 3. Sealing piece; 4. Perspective window; 5. Sealing gasket 1; 6. Sealing gasket 2; 7. Gasket; 8. I-shaped air vent; 9. Speed ​​reduction channel; 10. Oil guide hole; 11. Inner oil shield; 12. O-ring; 13. Screw plug; 14. Magnetic cylinder; 15. Screw; 16. Upper limit of oil level; 17. Lower limit of oil level; 18. Air vent; 19. Channel protrusion; 20. Reinforcement rib; 21. Inner ring; 22. Outer ring; 23. Mounting hole 1; 24. Arc groove 1; 25. Threaded hole; 26. Arc groove 2; 27. Mounting hole 2; 28. Oil filling hole. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0035] See also Figure 1-Figure 7 In this solution, the hub sealing cover is installed on the wheel hub of the vehicle, with the ground as the horizontal plane, the vehicle is parked on the ground, and the sealing cover is cut along the direction perpendicular to the ground, such as Figure 1 As shown, from left to right are the housing 2, the perspective window 4, the plugging member 3, and the gland 1. In this application, the plugging member 3 is a rubber member, also called a rubber plug. The gland 1 is installed on the outer side profile of the housing 2. A cavity is formed between the gland 1 and the housing 2. A gasket 7 is provided on the inner side profile of the housing 2. The gasket 7 is located between the wheel hub to be installed and the housing 2. In the cavity, a buckle formed by the perspective window 4 and the rubber plug is installed. Figure 1 The left side of the fastener is a perspective window 4, and the right side of the fastener is a rubber plug, wherein the left side of the perspective window 4 faces the cavity, the right side portion contacts the pressure cover 1, and a seal 5 is provided on the contact surface, and the left side portion contacts the shell 2, and a seal 2 6 is provided between the contact surfaces, and a gasket 7 is provided at the end of the shell 2 away from the pressure cover.

[0036] The plugging member 3 is buckled at the opening of the cylinder by a buckling structure, and the inner ring groove of the hole on the plugging member 3 is buckled with the inner oil-proof cover 11, and the inner oil-proof cover 11 is arranged in the opening. The end surface of the inner oil-proof cover 11 is provided with a plurality of vent holes 18.

[0037] In this embodiment, the two ends of the perspective window 4 are a cylinder and a torus. One end of the cylinder is open and the other end is sealed. The inside of the cylinder is hollow, and the torus is integrally formed with the open end of the cylinder. At this time, one end of the cylinder connected to the torus forms a recessed space inside the sealed end of the cylinder.

[0038] For both sides of the rubber plug, Figure 1 In the figure, the left side is a columnar body, and the structural shape is consistent with the shape of the concave space of the perspective window 4. The left side of the rubber plug is buckled inwardly into the concave space of the perspective window 4 through the cylindrical opening end of the perspective window 4. The right side is a circular surface, which seals the left port of the columnar body, and the annular surface and the columnar body are coaxial. The part of the rubber plug that is buckled into the perspective window 4 forms a cavity with the cylindrical sealing end of the perspective window 4. The perspective window 4 is provided with a plurality of oil guide holes 10 that penetrate the side wall of the cylinder. The plurality of oil guide holes 10 are evenly distributed on the side wall of the cylinder in the area where the cavity is located, and the plurality of oil guide holes 10 are located on the same circular surface. The diameter of the columnar body of the rubber plug is larger than the diameter of the cylindrical body of the perspective window. The rubber plug is squeezed into the concave space of the perspective window, so that the rubber plug and the perspective window are tightly buckled to ensure the sealing between the two.

[0039] In this embodiment, four oil guide holes 10 are arranged on the cylinder, and there is a 90-degree angle between every two of them. The length of the columnar body of the rubber plug is smaller than the length of the cylinder of the perspective window, ensuring that each oil guide hole 10 is not blocked by the rubber plug that is snapped into the perspective window, and the oil guide hole 10 can smoothly prevent oil leakage.

[0040] The center of the circular surface of the sealing member 3 is a straight-line air hole 8, through which the oil and gas inside the wheel hub are discharged to the outside. In the straight-line air hole 8 of the present application, the gap size inside the straight-line shape can be sufficient for the circulation of gas, for example, the straight-line air hole 8 is a straight-line linear structure.

[0041] Three deceleration channels 9 are arranged at intervals on the side surface of the blocking member 3 . The deceleration channels 9 radiate from the center of the circular surface to the surrounding areas to form a maze shape. The two sides of the deceleration channel 9 are respectively provided with deceleration protrusions 19 .

[0042] When water enters the labyrinth-shaped rubber plug surface, the water flow speed on the rubber plug surface is slowed down, which prolongs the time for water to enter the straight-line air vent 20, thereby effectively preventing water from entering the wheel hub.

[0043] An inner ring 21 and an outer ring 22 are provided on the outer surface of the pressure cover 1, and the inner ring 21 and the outer ring 22 are connected by four reinforcing ribs 20. The reinforcing ribs 20 are distributed between the inner ring 21 and the outer ring 22, and the situation of the perspective window 4 can be observed through the area between the reinforcing ribs 20. The circular surface of the perspective window 4 is provided with an oil level lower limit 17 and an oil level upper limit 16 coaxial with the circular surface, and the oil level lower limit 17 is located outside the oil level upper limit 16.

[0044] The outer ring 22 is provided with a plurality of evenly distributed mounting holes 23 and a plurality of evenly distributed arc grooves 24 .

[0045] When using the sealing cover of the present application, after the sealing cover is assembled according to the structure of the present application, the pressure cover 1 and the shell 2 are fixed by screws. When the vehicle is driving, the tire is in the water. During the period from when the water enters the sealing cover to when the vehicle leaves the water, the water entering the sealing cover is blocked by the maze-like surface on the rubber plug and will not quickly enter the straight-line air vent 8 in the center of the rubber plug. At the same time, during the rotation of the wheel hub, the water will also be thrown out of the sealing cover due to the centrifugal force. The sealing cover of the present application is not suitable for being in the water for a long time. It can have a good waterproof effect in most daily driving encounters with water, or off-road, outdoor puddles, and small areas of water.

[0046] As for the oil guide hole 10 on the air vent, when the vehicle tilts, the wheel hub will leak oil. When the lubricating oil in the wheel hub seeps out through the oil guide hole 10, it enters the gap between the perspective window 4 and the rubber plug. When the wheel hub is in operation, when the oil guide hole 10 is at the lowest end, the lubricating oil in the gap returns to the wheel hub through the oil guide hole 10 at the lowest end, effectively preventing the lubricating oil from leaking through the rubber plug. By observing the lubricating oil at the upper limit 16 and the lower limit 17 of the oil level, it is ensured that the lubricating oil is within the appropriate range and the loss of the lubricating oil is reduced; the color of the oil can also be observed through the perspective window 4, so as to timely grasp the oil condition.

[0047] The housing 2 is a cavity structure, and a plurality of threaded holes 25 are arranged on its small end surface and are evenly distributed around the circumference, and a plurality of second mounting holes 27 are arranged on its large end surface and screws 15 are arranged on the second mounting holes 27;

[0048] An oil filling hole 28 is arranged at the upper end of the housing 2 , and a plurality of evenly distributed arc grooves 26 are arranged on the outer circumference of the housing 2 .

[0049] The outer side of the housing 2 is provided with a bolt 13, and a magnetic cylinder 14 is installed on the small head of the bolt 13; the bolt 13 is sealed and connected to the housing 2 through an O-ring 12. Specifically, the magnetic cylinder 14 is press-fitted with the bolt 13 to absorb internal iron filings.

[0050] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A wheel hub sealing cover, comprising a gland (1) and a housing (2), characterized in that: A cavity is formed between the gland (1) and the shell (2), and a blocking member (3) and a perspective window (4) are provided on the gland (1) and close to the cavity; The perspective window (4) comprises a cylinder and a ring located at one end of the cylinder, one end of the cylinder is sealed and the other end is open, and the ring is arranged at an outer position of the opening; The blocking piece (3) is buckled at the opening position of the cylinder through a buckling structure, and the inner ring groove of the hole on the blocking piece (3) is buckled with the inner oil-proof cover (11), and the inner oil-proof cover (11) is arranged in the opening.

2. A wheel hub sealing cover according to claim 1, characterized in that: A plurality of oil guide holes (10) are provided through the side wall of the cylinder, and the plurality of oil guide holes (10) are evenly distributed along the central axis of the cylinder.

3. A wheel hub sealing cover according to claim 1, characterized in that: The perspective window (4) is provided with an oil level lower limit (17) and an oil level upper limit (16) coaxial with the circular ring, and the oil level lower limit (17) is located outside the oil level upper limit (16).

4. A wheel hub sealing cover according to claim 1, characterized in that: A rectangular inner ring groove is provided on one side of the blocking member (3), and the buckling structure is provided near the installation entrance end of the rectangular inner ring groove, and the buckling structure is buckled with the perspective window (4) via a conical chamfer.

5. A wheel hub sealing cover according to claim 4, characterized in that: The center of the other side surface of the blocking member (3) is a straight-line air vent (8), and three deceleration channels (9) are arranged on the side surface at intervals. The deceleration channels (9) radiate from the center of the circular surface to the surrounding areas to form a maze shape; and the two sides of the deceleration channels (9) are respectively deceleration protrusions (19).

6. The wheel hub sealing cover according to claim 1, characterized in that: The end surface of the inner oil-proof cover (11) is provided with a plurality of ventilation holes (18).

7. The wheel hub sealing cover according to claim 1, characterized in that: An inner ring (21) and an outer ring (22) are provided on the outer surface of the gland (1), and the inner ring (21) and the outer ring (22) are connected via four reinforcing ribs (20); The outer ring (22) is provided with a plurality of evenly distributed mounting holes (23) and a plurality of evenly distributed arc grooves (24).

8. The wheel hub sealing cover according to claim 1, characterized in that: A sealing gasket 1 (5) is provided between the contact surfaces of the gland (1) and the shell (2), a sealing gasket 2 (6) is provided between the contact surfaces of the perspective window (4) and the shell (2), and a gasket (7) is provided at one end of the shell (2) away from the gland (1).

9. The wheel hub sealing cover according to claim 1, characterized in that: The shell (2) is a cavity structure, a plurality of threaded holes (25) evenly distributed in a circumference are arranged on its small end surface, a plurality of second mounting holes (27) evenly distributed in a circumference are arranged on its large end surface, and screws (15) are arranged on the second mounting holes (27); An oil filling hole (28) is arranged at the upper end of the shell (2), and the outer circumference of the shell (2) is arranged as a plurality of evenly distributed circular arc grooves (26).

10. The wheel hub sealing cover according to claim 1, characterized in that: A screw plug (13) is provided on the outer side of the housing (2), and a magnetic cylinder (14) is mounted on the screw plug (13); the screw plug (13) is connected to the housing (2) via an O-ring (12).

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