CN220662166U - Wheel end sealing structure and axle assembly - Google Patents
Wheel end sealing structure and axle assembly Download PDFInfo
- Publication number
- CN220662166U CN220662166U CN202322366909.6U CN202322366909U CN220662166U CN 220662166 U CN220662166 U CN 220662166U CN 202322366909 U CN202322366909 U CN 202322366909U CN 220662166 U CN220662166 U CN 220662166U
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- Prior art keywords
- hub
- edge surface
- lips
- wall
- peripheral surface
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- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 230000002093 peripheral effect Effects 0.000 claims abstract description 32
- 230000007704 transition Effects 0.000 claims abstract description 15
- 230000007423 decrease Effects 0.000 claims description 6
- 239000004519 grease Substances 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 8
- 230000001050 lubricating effect Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a wheel end sealing structure and an axle assembly, wherein the wheel end sealing structure comprises a hub, a hub cover and a sealing ring; an opening is formed at the outer side end of the hub, and the hub cover is fixedly connected with the hub in a mode that the hub cover can be installed into the opening from the outer side of the opening; the sealing ring is arranged between the outer peripheral surface of the hub cover and the inner wall of the hub; the sealing ring comprises an outer edge surface facing the inner wall of the hub; an inner peripheral surface facing the outer peripheral surface of the hub cap; the two first lips are oppositely arranged and connected to the inner edge surface, the two first lips are gradually inclined from two sides of the inner edge surface towards the axial middle part of the sealing ring towards the direction away from the inner edge surface, one side of the first lips away from the inner edge surface is pressed on the outer peripheral surface of the hub cover, and the two first lips, the inner edge surface and the outer peripheral surface of the hub cover jointly enclose a first transition chamber. The utility model effectively prevents the lubricating grease inside the hub from leaking, and prevents dust, water and other impurities in the external environment from entering the hub to pollute the lubricating grease inside the hub.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a wheel end sealing structure and an axle assembly.
Background
The axle subassembly usually includes central siphon, wheel hub, the wheel hub lid, the wheel hub passes through the bearing to be installed in the tip of central siphon, the wheel hub lid closing cap is in the outside end of wheel hub, be used for sealing the outside end of wheel hub, in order to prevent that outside dust from entering into the wheel hub inner chamber, prevent simultaneously that the grease that is arranged in the wheel hub inner chamber to lubricate the bearing from leaking from the outside end of wheel hub, in order to ensure the leakproofness of wheel hub lid and wheel hub cooperation department, still need install the sealing washer in the fit clearance of wheel hub lid and wheel hub, in the wheel end seal structure at present, usually, install O type sealing washer in the clearance of wheel hub lid and wheel hub, compress tightly O type sealing washer through wheel hub lid and wheel hub and realize sealing, however, O type sealing washer is realized sealedly with wheel hub lid and wheel hub laminating through the deformation that produces after oneself is compressed tightly, the vehicle is in the course of traveling, because the wheel hub intracavity is because of factors such as friction intensification and external environment's change, the pressure differential of leading to the wheel hub chamber and external environment changes, pressure differential can lead to O type sealing washer to the fact O type sealing washer axial deformation along the wheel hub, the influence O type sealing washer's leakproofness, make O type sealing washer's stability worsen, easily lead to external dust, in the fact that outside dust, water, the inner chamber, the inlet into the wheel hub, the bearing is lost efficacy, the problem is not leaked into the bearing, the grease is reached to the inside the clearance is reached to the bearing, the inside the clearance.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a wheel end sealing structure which can effectively solve the problem that a sealing ring is invalid when the pressure difference between the inside of a wheel hub and the external environment changes.
The second object of the present utility model is to provide an axle assembly.
In order to achieve the first purpose, the utility model adopts the following technical scheme:
the wheel end sealing structure comprises a wheel hub, a wheel hub cover and a sealing ring;
an opening is formed at the outer side end of the hub, and the hub cover is fixedly connected with the hub in a mode that the hub cover can be installed into the opening from the outer side of the opening; the sealing ring is arranged between the outer peripheral surface of the hub cover and the inner wall of the hub;
the sealing ring comprises an outer edge surface facing the inner wall of the hub;
an inner peripheral surface facing the outer peripheral surface of the hub cap;
the two first lips are oppositely arranged and connected to the inner edge surface, the two first lips are gradually inclined from two sides of the inner edge surface towards the middle part of the axial direction of the sealing ring towards the direction far away from the inner edge surface, one side of the first lips far away from the inner edge surface is pressed on the outer peripheral surface of the hub cover, and the two first lips, the inner edge surface and the outer peripheral surface of the hub cover jointly enclose a first transition chamber; and/or
The two second lips are oppositely arranged and connected to the outer edge surface, the two second lips are gradually inclined towards the direction far away from the outer edge surface from the two sides of the outer edge surface towards the axial middle part of the sealing ring, one side, far away from the outer edge surface, of the second lips is pressed on the inner wall of the hub, and the two second lips, the outer edge surface and the inner wall of the hub jointly enclose a second transition chamber.
The inner wall of the hub is provided with a mounting groove, and the sealing ring is embedded in the mounting groove.
The thickness of the first lip gradually decreases from the end near the inner edge face toward the end far from the inner edge face, and the thickness of the second lip gradually decreases from the end near the outer edge face toward the end far from the outer edge face.
The hub cover comprises an end cover and a side wall positioned at the periphery of the end cover, and the outer surface of the side wall forms the outer circumferential surface of the hub cover.
The outer peripheral surface is provided with an axial extension part matched with the first lip piece and a conical part positioned on the inner side of the extension part, and the outer diameter of the conical part gradually decreases from one end close to the extension part to one end far away from the extension part.
The inner side end of the side wall is provided with a radially outwards protruded buckle, and the inner wall of the hub is provided with a clamping groove for the buckle to be embedded.
The inner wall of the hub is provided with internal threads, and the outer peripheral surface is provided with external threads matched with the internal threads.
In order to achieve the second purpose, the utility model adopts the following technical scheme:
the axle assembly comprises the wheel end sealing structure.
The utility model has the beneficial effects that:
according to the wheel end sealing structure, the inner lip piece and the outer lip piece are arranged on the sealing ring, so that when the pressure difference is generated between the inner cavity of the wheel hub and the external environment, the lip pieces on the sealing ring can be further pressed by the pressure difference, namely, when the pressure difference between the inner and the outer sides is generated, the sealing performance of the sealing ring is improved, thereby effectively preventing lubricating grease in the wheel hub from leaking, and preventing dust, water and other impurities in the external environment from entering the wheel hub to pollute the lubricating grease in the wheel hub.
Drawings
FIG. 1 is a schematic view of a wheel end seal structure according to the present utility model;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic view of an operational state of the wheel end seal structure of FIG. 2;
FIG. 4 is a schematic view of the wheel end seal of FIG. 2 in another operational configuration;
fig. 5 is a schematic structural view of another sealing ring with a wheel end sealing structure according to the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and detailed description:
as shown in fig. 1 and 2, in an embodiment of the present utility model, the wheel end sealing structure includes a hub 10, a hub cover 20, and a sealing ring 30, wherein an opening is formed at an outer end of the hub 10, the hub cover 20 can be installed into the opening from an outer side of the opening and fixedly connected with the hub 10, for example, the hub cover 20 can be embedded into the opening from an outer side of the opening and fixedly connected with the hub 10 by clamping, and of course, the hub cover 20 can be embedded into the opening by other fittable manners to fixedly connect with the hub 10, and the sealing ring 30 is disposed between an outer peripheral surface 21 of the hub cover 20 and an inner wall 11 of the hub 10; the seal ring 30 includes an outer edge surface 33 facing the inner wall 11 of the hub 10, an inner edge surface 31 facing the outer edge surface 33 and facing the outer peripheral surface 21 of the hub cover 20, and two first lips 32, each of which is located on the inner edge surface 31 and is disposed opposite to the other, the first lips 32 extend obliquely from the side edges of the inner edge surface 31, that is, the two first lips 32 are gradually inclined from both sides of the inner edge surface 31 toward the middle part in the axial direction of the seal ring 30 in a direction away from the inner edge surface 31, so that the end of the first lips 32 away from the inner edge surface 31 forms a free end, and the side of the free end away from the inner edge surface 31 is pressed against the outer peripheral surface 21 of the hub cover 20, and the two first lips 32, the inner edge surface 31, and the outer peripheral surface 21 of the hub cover 20 jointly enclose a first transition chamber. Meanwhile, the sealing ring 30 further comprises two second lips 34, the two second lips 34 are located on the outer edge surface 33 and are oppositely arranged, the second lips 34 extend obliquely after extending from the side edges of the outer edge surface 33, namely, the two second lips 34 are gradually inclined from two sides of the outer edge surface 33 towards the axial middle part of the sealing ring 30 towards the direction away from the outer edge surface 33, so that the end part of the second lips 34 away from the outer edge surface 33 forms a free end, and the free end of the second lips 34 away from the outer edge surface 33 is pressed on the inner wall 11 of the hub 10, and a second transition chamber is jointly defined by the two second lips 34, the outer edge surface 33 and the inner wall 11 of the hub 10.
The two first lips 32 are pressed against the outer circumferential surface 21 of the hub cap 20, and the two second lips 34 are pressed against the inner wall 11 of the hub 10 to seal the gap between the hub 10 and the hub cap 20, thereby preventing dust and water from entering the inner cavity of the hub 10 and avoiding grease leakage. Referring to fig. 3, when the internal temperature of the hub 10 increases during running of the vehicle, the inner cavity pressure of the hub 10 is greater than the atmospheric pressure of the external environment, the sealing ring 30 will receive the air pressure from the inner cavity of the hub 10, the inner first lip 32 and the second lip 34 will be pushed open under the pressure of the inner cavity of the hub 10, so that the inner pressures of the first transition chamber and the second transition chamber increase, at this time, the larger pressure in the first transition chamber will be applied to the outer first lip 32, so that the outer first lip 32 is pressed against the outer peripheral surface 21 of the hub cover 20, and the same, the larger pressure in the second transition chamber will press the outer second lip 34 against the inner wall 11 of the hub 10, thus, by the pressure difference between the hub 10 and the external environment, the sealing performance of the sealing ring 30 is enhanced, and grease inside the hub 10 is prevented from leaking when the inner cavity pressure of the hub 10 increases. Referring to fig. 4, when the atmospheric pressure of the external environment is greater than the internal pressure of the hub 10, the first and second lips 32 and 34 are pushed apart, the internal pressures of the first and second transition chambers are increased, and the first and second lips 32 and 34 are respectively compressed, thereby effectively preventing foreign substances such as dust, water, etc. from entering the inside of the hub 10.
According to the wheel end sealing structure, the inner lip piece and the outer lip piece are arranged on the sealing ring, so that when the pressure difference is generated between the inner cavity of the wheel hub and the external environment, the lip pieces on the sealing ring can be further pressed by the pressure difference, namely, when the pressure difference between the inner and the outer sides is generated, the sealing performance of the sealing ring is improved, thereby effectively preventing lubricating grease in the wheel hub from leaking, and preventing dust, water and other impurities in the external environment from entering the wheel hub to pollute the lubricating grease in the wheel hub.
The inner wall 11 of the hub 10 is provided with a mounting groove 12, the sealing ring 30 is embedded in the mounting groove 12, the mounting groove 12 is used for limiting the sealing ring 30 in the axial direction of the hub 10, the sealing ring 30 is prevented from moving along the axial direction of the hub 10, and the free end of the second lip piece 34 is propped against the bottom wall of the mounting groove 12.
Further, the first lip 32 and the second lip 34 are provided in a configuration in which the thickness thereof is gradually changed, specifically, the thickness of the first lip 32 is gradually reduced from the end near the inner edge face 31 toward the end far from the inner edge face 31, and the thickness of the second lip 34 is gradually reduced from the end near the outer edge face 33 toward the end far from the outer edge face 33; by setting the first lip 32 to the above-described thickness-gradual-change configuration such that the end of the first lip 32 remote from the inner peripheral surface 31 is easily deformed relative to the end near the inner peripheral surface 31, when a pressure difference is generated between the inside of the hub 10 and the outside environment, the pressure in the first transition chamber is more likely to deform the free end of the first lip 32, since the pressure in the first transition chamber applies a force to the free end of the first lip 32 in the direction toward the outer peripheral surface 21 of the hub cover 20, the free end of the first lip 32 which is likely to deform can be more likely to be pressed against the outer peripheral surface 21, thereby increasing the sealing performance of the seal ring 30, and as such, the free end of the second lip 34 which is likely to be deformed can be more likely to be pressed against the inner wall 11 of the hub 10 under the pressure of the second transition chamber.
In the present utility model, the hub cap 20 includes an end cap and a sidewall 201 disposed at a periphery of the end cap, and an outer surface of the sidewall 201 forms an outer circumferential surface 21 of the hub cap 20. The side wall 201 is fitted from the opening of the hub 10 to the inside of the inner wall 11 when assembled with the hub 10. The inner side of the side wall 201 is provided with a radially outwardly protruding buckle 23, the inner wall 11 of the hub 10 is provided with a clamping groove 13, when the hub is assembled, the side wall 201 is inserted from the opening of the hub 10, the buckle 23 is embedded into the clamping groove 13, and the buckle 23 is clamped with the clamping groove 13, so that the hub cover 20 is clamped and fixed on the hub 10. Of course, in other embodiments, the inner wall 11 of the hub 10 may be provided with an internal thread, the outer circumferential surface 21 of the hub cap 20 may be provided with an external thread, the external thread may be matched with the internal thread, and the hub cap 20 may be screwed into the hub 10 from the opening of the hub 10 and fixed to the hub 10.
Further, the outer peripheral surface 21 is provided with an axial extension 211 which is fitted with the first lip 32, and a tapered portion 212 which is located inside the extension 211, the outer diameter of the tapered portion 212 being gradually reduced from the end near the extension 211 toward the end far from the extension 211, that is, the tapered portion 212 being provided with a structure in which the outer diameter is gradually increased from inside to outside, the columnar portion 212 does not press the seal ring 30 when the hub cover 20 is fitted into the inner wall 21 of the hub 10 from the opening at the outer end of the hub 10, so that the seal ring 30 is prevented from being deformed by the extrusion of the hub cover 20 when the hub cover 20 is assembled with the hub 10.
In the above preferred embodiment, the first lip 32 and the second lip 34 are provided on the inner edge surface 31 and the outer edge surface 33 of the seal ring 30, respectively, so that the portion of the seal ring 30 contacting the hub cover 20 and the portion of the seal ring 30 contacting the inner wall 11 of the hub 10 form a preferable sealing structure; in actual use, as shown in fig. 5, the utility model can also be that only two first lips are arranged on the inner edge surface of the sealing ring, and the outer edge surface of the sealing ring is directly in compression fit with the inner wall 11 of the hub 10 or in sealing fit by adopting bonding and other modes; further, two second lips may be provided only on the outer peripheral surface of the seal ring, and the inner peripheral surface of the seal ring may be directly press-fitted to the outer peripheral surface 21 of the hub cap 20, or may be sealed by adhesion or the like.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model in essence.
Claims (8)
1. The wheel end sealing structure is characterized by comprising a wheel hub, a wheel hub cover and a sealing ring;
an opening is formed at the outer side end of the hub, and the hub cover is fixedly connected with the hub in a mode that the hub cover can be installed into the opening from the outer side of the opening; the sealing ring is arranged between the outer peripheral surface of the hub cover and the inner wall of the hub;
the sealing ring comprises an outer edge surface facing the inner wall of the hub;
an inner peripheral surface facing the outer peripheral surface of the hub cap;
the two first lips are oppositely arranged and connected to the inner edge surface, the two first lips are gradually inclined from two sides of the inner edge surface towards the middle part of the axial direction of the sealing ring towards the direction far away from the inner edge surface, one side of the first lips far away from the inner edge surface is pressed on the outer peripheral surface of the hub cover, and the two first lips, the inner edge surface and the outer peripheral surface of the hub cover jointly enclose a first transition chamber; and/or
The two second lips are oppositely arranged and connected to the outer edge surface, the two second lips are gradually inclined towards the direction far away from the outer edge surface from the two sides of the outer edge surface towards the axial middle part of the sealing ring, one side, far away from the outer edge surface, of the second lips is pressed on the inner wall of the hub, and the two second lips, the outer edge surface and the inner wall of the hub jointly enclose a second transition chamber.
2. The wheel end sealing structure of claim 1, wherein a mounting groove is provided on an inner wall of the hub, and the seal ring is embedded in the mounting groove.
3. The wheel end seal of claim 1 wherein the thickness of the first lip decreases from an end proximate the inner rim surface to an end distal the inner rim surface and the thickness of the second lip decreases from an end proximate the outer rim surface to an end distal the outer rim surface.
4. The wheel end seal assembly of claim 1 wherein the hubcap includes an end cap and a sidewall at a periphery of the end cap, an outer surface of the sidewall forming an outer peripheral surface of the hubcap.
5. The wheel-end seal structure according to claim 4, wherein an axially extending portion that engages with the first lip and a tapered portion that is located inside the extending portion are provided on the outer peripheral surface, and an outer diameter of the tapered portion gradually decreases from an end near the extending portion toward an end far from the extending portion.
6. The wheel end sealing structure according to claim 4, wherein the inner side end of the side wall is provided with a radially outwardly protruding catch, and the inner wall of the hub is provided with a catch groove into which the catch is inserted.
7. The wheel end sealing structure according to claim 4, wherein the inner wall of the hub is provided with an internal thread, and the outer circumferential surface is provided with an external thread matching the internal thread.
8. An axle assembly comprising the wheel end seal arrangement of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322366909.6U CN220662166U (en) | 2023-09-01 | 2023-09-01 | Wheel end sealing structure and axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322366909.6U CN220662166U (en) | 2023-09-01 | 2023-09-01 | Wheel end sealing structure and axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220662166U true CN220662166U (en) | 2024-03-26 |
Family
ID=90338443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322366909.6U Active CN220662166U (en) | 2023-09-01 | 2023-09-01 | Wheel end sealing structure and axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220662166U (en) |
-
2023
- 2023-09-01 CN CN202322366909.6U patent/CN220662166U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |