CN201827247U - Sealing device for hub bearing - Google Patents
Sealing device for hub bearing Download PDFInfo
- Publication number
- CN201827247U CN201827247U CN2010205875100U CN201020587510U CN201827247U CN 201827247 U CN201827247 U CN 201827247U CN 2010205875100 U CN2010205875100 U CN 2010205875100U CN 201020587510 U CN201020587510 U CN 201020587510U CN 201827247 U CN201827247 U CN 201827247U
- Authority
- CN
- China
- Prior art keywords
- sealing lip
- ring plate
- lip
- outer ring
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
- F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
- F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section with sealing lips
Landscapes
- Sealing Of Bearings (AREA)
Abstract
The utility model relates to a sealing device for a hub bearing, which comprises a supporting framework and an elastic sealing body, wherein the supporting framework comprises a support ring, an outer annular plate and an inner annular plate which are arranged in parallel along the radial direction, and an inclined ring; the elastic sealing body is wrapped on the outer side of the supporting framework and on the inner annular plate, and comprises a side sealing lip, a dust sealing lip and a grease sealing lip at the inner side; an included angle Alpha between the inclined ring and the outer annular plate ranges between 110 degrees to 140 degrees; the opening of the compressed side sealing lip exceeds the inner diameter of the support ring, and the opening of the grease sealing lip exceeds four fifths of the length of the support ring; the length of the dust sealing lip and the length of the grease sealing lip are both longer than that of the side sealing lip; the root of the side sealing lip is positioned in the middle of the outer annular plate; and a cavity between the side sealing lip and the dust sealing lip and a cavity between the grease sealing lip and the dust sealing lip contain lubricating grease. The sealing device has the advantages of being capable of realizing smaller friction torque and prolonging the service life on the basis of ensuring good sealing effect.
Description
Technical field
The utility model relates to a kind of seal arrangement that is used for hub bearing, belongs to the hub bearing technical field of sealing technology.
Background technique
Hub bearing is installed on the wheel shaft of vehicle, mainly plays a part load-bearing and for the rotation of wheel hub provides accurate guiding, it not only bears thrust load but also bear radial load, is very important component on the axletree.Because during vehicle driving, the dust that wheel splash, mud and muddy water can be invaded hub bearing, especially the relatively poor location of road conditions more makes hub bearing easily by dirt, thus reduction of service life.Therefore between hub bearing and wheel shaft, seal arrangement is installed, and more seal arrangement adopts many lip seals circle at present, many lip seals circle is made of support frame and elastic sealed body, elastic sealed body is provided with side sealing lip, dirt sealing lip and fat sealing lip, by the formed labyrinth sealing of a plurality of seal lips to reach the dust-tight purpose.But the seal arrangement of the present this structure of opening, though can carry out the intensity increase to support frame by tiltedly enclosing between outer ring plate on the support frame and the inner ring plate, but tiltedly circle and outer ring plate or and inner ring plate between angle comparatively smooth, so the lip of side sealing lip and the middle part that fat seal lip mostly is arranged on support frame, Zhong Jian dirt sealing lip and side sealing lip are nearer in addition, make the length of side sealing lip all than length greater than fat sealing lip and dirt sealing lip, because the side sealing lip after installing has a bigger magnitude of interference with wheel shaft and cooperates, can cause friction torque excessive, and too high when temperature rise, influence working life of bearing and seal ring.
Summary of the invention
The purpose of this utility model provides a kind of on the basis that guarantees excellent sealing effect, can realize less friction torque simultaneously and improve the seal arrangement that is used for hub bearing in working life.
The utility model is that the technological scheme that achieves the above object is: a kind of seal arrangement that is used for hub bearing, comprise support frame and elastic sealed body, support frame comprises vertically the bearing ring that is provided with and match with bearing outer ring, outer ring plate that is parallel to each other and the inner ring plate that is disposed radially and be connected outer ring plate and inner ring plate between oblique circle, elastic sealed body is coated on the outside and inner ring plate of support frame, and elastic sealed body has the side sealing lip, dirt sealing lip and inboard fat sealing lip, it is characterized in that: the angle α between described oblique circle and the outer ring plate is between 110 °～140 °, and the lip of the side sealing lip after compressing surpasses the internal diameter of bearing ring, the lip of fat sealing lip surpasses 4/5 of bearing ring length, the length of the length of dirt sealing lip and fat sealing lip is all greater than the length of side sealing lip, and the root of side sealing lip is positioned at the outer ring plate middle part, and cavity and fat sealing lip and dirt sealing lip cavity have lubricating grease between side sealing lip and the dirt sealing lip.
The utility model improves support frame, oblique circle between inner ring plate and the outer ring plate is improved row, reduced the angle between oblique circle and the outer ring plate, and the length of the side sealing lip after compressing surpasses the internal diameter of bearing ring, the length of fat sealing lip surpasses 4/5 of bearing ring length, therefore the lip of side sealing lip and the lip of fat sealing lip can be extended to the support frame end, and prolonged the dirt sealing lip the lip position and with the lip position of fat sealing lip, the sealing station and the area of wheel shaft have promptly been enlarged, and cavity between side sealing lip and the dirt sealing lip and the cavity between fat sealing lip and the dirt sealing lip have been increased, when lubricating grease exists between each sealing lip cavity, can reduce mutual friction and driving torque by the lubricating grease of loading in the cavity.The root of the utility model side sealing lip is arranged on the middle part of support frame outer ring plate, therefore the side sealing lip has better elasticity and sealability, seal arrangement of the present utility model has been realized less friction torque on the basis that guarantees good sealing effect, improve the working life of seal ring.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Fig. 1 is that the utility model is installed in the structural representation on wheel shaft and the propeller boss bearing.
Fig. 2 is the I place structure for amplifying schematic representation of Fig. 1.
Wherein: the 1-wheel shaft, the 2-elastic sealed body, 21-side sealing lip, 22-dirt sealing lip, 23-fat sealing lip, the 3-support frame, 31-bores circle, the 32-bearing ring, the 33-outer ring plate, 34-tiltedly encloses, 35-inner ring plate, 4-bearing outer ring.
Embodiment
See Fig. 1, shown in 2, the utility model is used for the seal arrangement of hub bearing, comprise support frame 3 and elastic sealed body 2, this support frame 3 comprises vertically the bearing ring 32 that is provided with and match with bearing outer ring 4, outer ring plate that is parallel to each other 33 that is disposed radially and inner ring plate 35 and be connected outer ring plate 33 and inner ring plate 35 between oblique circle 34, elastic sealed body 2 is coated on the outside and inner ring plate 35 of support frame 3, and elastic sealed body 2 has side sealing lip 21, dirt sealing lip 22 and inboard fat sealing lip 23, see shown in Figure 2, angle α between oblique circle 34 of the utility model and the outer ring plate 33 is between 110 °～140 °, by reducing the angle between oblique circle 34 and the outer ring plate 33, can further improve the mechanical strength of support frame 3 on the one hand, shorten the length of outer ring plate 33 on the other hand, and the distance between increase outer ring plate 33 and the inner ring plate 35, be installed between bearing outer ring 4 and the wheel shaft 1 at support frame 3 and elastic sealed body 2, the lip of the side sealing lip 21 after compressing surpasses the internal diameter of bearing ring 32, and the lip position of fat sealing lip 23 surpasses 4/5 of bearing ring 32 length, the length of the length of dirt sealing lip 22 and fat sealing lip 23 is all greater than the length of side sealing lip 21, so increase distance and space between each sealing lip, and the root of side sealing lip 21 is positioned at outer ring plate 33 middle parts, not only side sealing lip 21 has elasticity preferably, and side sealing lip 21 can also surpass the arc surface of wheel shaft 1, make the side sealing lip 21 and the cavity of dirt sealing lip 22 cavitys and fat sealing lip 23 and dirt sealing lip 22 have more lubricating grease, lubricating grease is existed in the big cavity by each sealing lip.
See shown in Fig. 1,2, also be provided with awl circle 31 between the bearing ring 32 of the utility model support frame 3 and the outer ring plate 33, and the outside of awl circle 31 has seal, angle β between the seal of side sealing lip 21 and outer ring plate 33 outsides makes seal arrangement of the present utility model have good sealability between 10 °～40 °.
Claims (2)
1. seal arrangement that is used for hub bearing, comprise support frame (3) and elastic sealed body (2), support frame (3) comprises vertically the bearing ring (32) that is provided with and match with bearing outer ring, outer ring plate that is parallel to each other (33) that is disposed radially and inner ring plate (35) and be connected outer ring plate (33) and inner ring plate (35) between oblique circle (34), elastic sealed body (2) is coated on the outside and inner ring plate (35) of support frame (3), and elastic sealed body (2) has side sealing lip (21), dirt sealing lip (22) and inboard fat sealing lip (23), it is characterized in that: the angle α between described oblique circle (34) and the outer ring plate (33) is between 110 °～140 °, and the lip of the side sealing lip (21) after compressing surpasses the internal diameter of bearing ring (32), the lip of fat sealing lip (23) surpasses 4/5 of bearing ring (32) length, the length of the length of dirt sealing lip (22) and fat sealing lip (23) is all greater than the length of side sealing lip (21), and the root of side sealing lip (21) is positioned at outer ring plate (33) middle part, and cavity and fat sealing lip (23) have lubricating grease with dirt sealing lip (22) cavity between side sealing lip (21) and the dirt sealing lip (22).
2. the seal arrangement that is used for hub bearing according to claim 1, it is characterized in that: also be provided with awl circle (31) between the bearing ring (32) of described support frame (3) and the outer ring plate (33), and the outside of awl circle (31) has seal, and the angle β between the seal of side sealing lip (21) and outer ring plate (33) outside is between 10 °～40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205875100U CN201827247U (en) | 2010-10-28 | 2010-10-28 | Sealing device for hub bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205875100U CN201827247U (en) | 2010-10-28 | 2010-10-28 | Sealing device for hub bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201827247U true CN201827247U (en) | 2011-05-11 |
Family
ID=43965786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205875100U Expired - Lifetime CN201827247U (en) | 2010-10-28 | 2010-10-28 | Sealing device for hub bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201827247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108349303A (en) * | 2015-11-02 | 2018-07-31 | 舍弗勒技术股份两合公司 | Wheel bearing unit |
-
2010
- 2010-10-28 CN CN2010205875100U patent/CN201827247U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108349303A (en) * | 2015-11-02 | 2018-07-31 | 舍弗勒技术股份两合公司 | Wheel bearing unit |
| CN108349303B (en) * | 2015-11-02 | 2021-11-02 | 舍弗勒技术股份两合公司 | Wheel bearing unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |