CN214727877U

CN214727877U - Hub end cover

Info

Publication number: CN214727877U
Application number: CN202120350970.XU
Authority: CN
Inventors: 李十放; 马常伟; 赵清华; 岳中政; 张建中
Original assignee: Shandong Haoxin Machinery Co Ltd
Current assignee: Shandong Haoxin Machinery Co Ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-11-16
Anticipated expiration: 2031-02-07

Abstract

The utility model discloses a wheel hub end cover, include: the lid, the lid is equipped with the mounting hole, is equipped with ventilative stopper that flexible material made in the mounting hole, and by inside to outside, ventilative stopper is equipped with backward flow hole, intercommunicating pore and exhaust gap in order, and the inside and outside pressure differential of lid is equal, and the exhaust gap is in the closed condition, and the inside and outside pressure differential of lid is unequal, and the exhaust gap is opened, and the diameter in backward flow hole is greater than the diameter of intercommunicating pore, and the backward flow hole be the bell mouth. Because the lid is equipped with ventilative stopper, ventilative stopper is equipped with the exhaust gap, the cavity internal pressure increase leads to the exhaust gap to open in the wheel hub operation process, unnecessary gas is discharged through the exhaust gap in the cavity, the lubricating oil that gas carried among the exhaust process passes through backward flow hole fast return, lubricating oil can not leak basically, when external pressure is greater than cavity pressure, the exhaust gap is opened, external gas gets into in the cavity, with balanced internal and external pressure, most steam dust etc. in the external gas are blockked outside by the exhaust gap, wheel hub has been protected.

Description

Hub end cover

Technical Field

The utility model relates to an automobile parts technical field, specific theory relates to a wheel hub end cover.

Background

The hub end cover is mainly used on the outer side of a front axle hub of a truck and rotates together with the truck wheel. At present, the common wheel hub end covers in China are generally thin plate stamping parts, do not have an oil-proof ventilation function, and also do not have a function of balancing internal pressure and external pressure, when a wheel runs, the temperature in a closed cavity formed by the wheel hub and the wheel hub end covers rises, the pressure of the cavity increases, and if unnecessary gas is not discharged in time, failure of a sealing element can be caused, lubricating oil leaks out, and the normal running and the service life of the wheel hub are influenced.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: the utility model provides a can balance the wheel hub end cover of the inside and outside pressure of wheel hub unit, this end cover not only can prevent that inside lubricating oil from oozing, can also block outside steam dust etc. and get into inside the wheel hub end cover, protection wheel hub.

In order to solve the technical problem, the technical scheme of the utility model is that:

a hub end cover comprising: the cover body is provided with a mounting hole, a ventilation plug made of flexible materials is arranged in the mounting hole, and the ventilation plug is sequentially provided with a backflow hole, a communication hole and an exhaust gap which are communicated from inside to outside.

Preferably, the exhaust slit is a cross-shaped hole.

Preferably, the vent plug is made of a rubber material.

Preferably, the vent plug is fixedly installed in the installation hole in an interference fit mode.

Preferably, the outer peripheral surface of the air permeable plug is provided with a plurality of convex rings.

Preferably, the inner surface of the cover body is provided with an oil baffle cover, and the oil baffle cover is provided with an oil baffle cover vent hole for communicating the inner cavity of the cover body with the backflow hole.

Preferably, a cover plate opposite to the exhaust gap is fixedly arranged on the outer surface of the cover body.

Preferably, the lid include the casing of cartridge type and connect in the transparent window and the gland of casing one end, transparent window is located the casing with between the gland, the gland is fixed in the casing, the gland includes the apron, the oil baffle cover is fixed in the internal surface of transparent window.

Preferably, the gland comprises a gland flange plate and at least two connecting pieces, wherein the gland flange plate is fixedly connected with the shell, and the connecting pieces are fixedly connected between the gland flange plate and the cover plate.

Preferably, a first sealing gasket is arranged between the gland flange plate and the shell, and a second sealing gasket is arranged between the transparent window and the shell.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the wheel hub end cover comprises a cover body, the cover body is provided with a mounting hole, a ventilating plug made of flexible materials is arranged in the mounting hole, and the ventilating plug is sequentially provided with a backflow hole, a communication hole and an exhaust gap which are communicated with each other from inside to outside, the diameter of the backflow hole is larger than that of the communication hole, and the opening of the backflow hole on the inner side is larger than that of the conical hole with the opening on the outer side. The wheel hub end cover assembles on wheel hub, form confined cavity between wheel hub end cover and the wheel hub, because the lid is equipped with ventilative stopper, ventilative stopper is equipped with the exhaust gap, wheel hub operation in-process cavity pressure increase leads to the exhaust gap to open, unnecessary gas discharges through the exhaust gap in the cavity, the lubricating oil that gas carried in the exhaust process flows back through backward flow hole fast, lubricating oil can not leak basically, when external pressure is greater than cavity pressure, the exhaust gap is opened, the external gas gets into in the cavity, with balanced internal and external pressure, most steam dust etc. in the external gas are blockked outside by the exhaust gap, wheel hub has been protected.

Drawings

FIG. 1 is a schematic structural view of a hub cover according to the present invention;

FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1;

FIG. 3 is a schematic view of an explosion structure of the wheel hub end cover of the present invention;

FIG. 4 is an enlarged schematic view of the portion B of FIG. 2;

in the figure: 1-a third gasket; 2-a shell; 21-a shell flange; 3-a first gasket; 4-pressing the cover; 41-a gland flange plate; 42-a connecting plate; 43-a cover plate; 5-a transparent window; 6-a second gasket; 7-oil shield; 71-oil shield vent hole; 8-a gas-permeable plug; 81-a backflow hole; 82-a communication hole; 83-exhaust gap; 11-a bolt; 12-bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown collectively in fig. 1, 2 and 3, a hub end cover includes: lid and locate the ventilative stopper 8 of lid.

The lid includes casing 2, transparent window 5 and gland 4, and casing 2 is the cartridge type, and the one end that casing 2 and wheel hub are connected is equipped with shell flange 21, and transparent window 5 and gland 4 all are located casing 2's the other end, and transparent window 5 is located between casing 2 and the gland 4, and transparent window 5 is made by transparent material, like ya keli or PVC etc.. Gland 4 is including the gland ring flange 41 of integrative setting, connecting piece and apron 43, gland ring flange 41 is fixed in casing 2 through bolt 11, transparent window 5 is compressed tightly by gland ring flange 41 and is fixed in casing 2, be equipped with the sealed 6 of second between transparent window 5 and the casing 2, be equipped with first sealed 3 of filling up between gland ring flange 41 and the casing 2, the connecting piece is connected between gland ring flange 41 and apron 43, the connecting piece is equipped with at least two and along the circumference equipartition, the preferred connecting plate 42 or the connecting rod of connecting piece.

As shown in fig. 4, the transparent window 5 is provided with a mounting hole, the ventilation plug 8 is fixedly mounted in the mounting hole in an interference fit manner, the ventilation plug 8 is made of a flexible material, such as rubber, from inside to outside, the ventilation plug 8 is sequentially provided with a backflow hole 81, a communication hole 82 and an exhaust gap 83 which are communicated, the diameter of the backflow hole 81 is larger than that of the communication hole 82, the backflow hole 81 is a conical hole with an inner side opening larger than an outer side opening, oil return is facilitated, the exhaust gap 83 is preferably a cross-shaped hole, the cross-shaped hole has the advantage of being easy to open, the internal and external pressure difference can be opened when the internal and external pressure difference is small, and the internal and external pressure difference is easy to balance. The arrangement of the communication hole 82 enables the periphery of the exhaust gap 83 to have a relatively thick wall thickness, and the structural reliability is good. The peripheral surface of the ventilation plug 81 is provided with a plurality of convex rings 84, a plurality of seals are formed between the plurality of convex rings 84 and the transparent window 5, and the sealing effect is good.

The inner surface fixed mounting of transparent window 5 has oil baffle cover 7, and oil baffle cover 7 and transparent window 5 are made by the same material, and the week side of oil baffle cover 7 is equipped with the oil baffle cover air vent 71 of the inner chamber of intercommunication lid and backward flow hole 81, prevents that fluid direct impact breather plug 8, and apron 43 sets up with exhaust gap 83 relatively, prevents that outside steam and dust direct impact breather plug 8.

The utility model discloses a wheel hub end cover assembles on wheel hub, casing ring flange 21 passes through bolt 12 fixed connection with wheel hub, be equipped with third sealed pad 1 between casing ring flange 21 and the wheel hub, thereby make and enclose into confined cavity between wheel hub, casing 2 and the transparent window 5, in the wheel hub unit operation process, when the temperature rising pressure increases in the cavity, under the effect of internal and external pressure difference, exhaust gap 83 is opened, unnecessary gas passes through oil blocking cover air vent 71, backflow hole 81, intercommunicating pore 82 and exhaust gap 83 in order and discharges, the lubricating oil that carries in the gas passes through backflow hole 81 and flows back fast, the lubricating oil of wheel hub can not leak basically; at low temperature, the pressure in the cavity is lower than the outside, and the outside air enters the cavity, so that the balance effect of the inside pressure and the outside pressure is achieved, and most of muddy water and dust in the outside air are blocked outside due to the small gap of the exhaust gap 83, so that the hub is effectively protected.

The oil level in the cavity can be directly checked from the outside through the transparent window 5, so that a vehicle owner can conveniently know the running condition of the vehicle in time.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. A hub end cap comprising: the cover body is characterized in that the cover body is provided with a mounting hole, a ventilating plug made of flexible materials is arranged in the mounting hole, and is sequentially provided with a backflow hole, a communication hole and an exhaust gap which are communicated from inside to outside, the exhaust gap is in a closed state when the pressure difference inside and outside the cover body is equal, the exhaust gap is opened when the pressure difference inside and outside the cover body is unequal, the diameter of the backflow hole is larger than that of the communication hole, and the inside opening of the backflow hole is larger than that of the outside opening of the backflow hole.

2. The hub end cover of claim 1, wherein the vent slits are cross-shaped apertures.

3. The hub end cap of claim 1 wherein said purge plug is formed of a rubber material.

4. The hub end cap of claim 1, wherein the purge plug is fixedly mounted in the mounting hole by way of an interference fit.

5. The hub cap of claim 1 wherein said purge plug has a plurality of raised rings on an outer peripheral surface thereof.

6. The hub end cover of claim 1, wherein the cover body has an oil shield on an inner surface thereof, the oil shield having an oil shield vent hole communicating the cover body cavity with the return vent.

7. The hub end cap of claim 6 wherein a cover plate is secured to an outer surface of the cover opposite the vent slot.

8. The hub end cover of claim 7, wherein the cover includes a cylindrical shell, a transparent window and a gland coupled to an end of the shell, the transparent window is located between the shell and the gland, the gland is secured to the shell, the gland includes the cover plate, and the oil deflector is secured to an inner surface of the transparent window.

9. The hub end cover of claim 8, wherein the gland includes a gland flange fixedly connected to the shell and at least two connecting members fixedly connected between the gland flange and the cover plate.

10. The hub cap of claim 9 wherein a first seal is disposed between said capping flange and said shell and a second seal is disposed between said transparent window and said shell.