CN201836392U - Labyrinth sealing ring and bearing sealing structure - Google Patents
Labyrinth sealing ring and bearing sealing structure Download PDFInfo
- Publication number
- CN201836392U CN201836392U CN2010205767233U CN201020576723U CN201836392U CN 201836392 U CN201836392 U CN 201836392U CN 2010205767233 U CN2010205767233 U CN 2010205767233U CN 201020576723 U CN201020576723 U CN 201020576723U CN 201836392 U CN201836392 U CN 201836392U
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- CN
- China
- Prior art keywords
- sealing lip
- sealing
- lip
- seal
- bearing
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- 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 - Fee Related
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- Sealing Of Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a labyrinth sealing ring. The poor waterproof effect of the existing sealing ring reduces the service life of a bearing. The labyrinth sealing ring is characterized in that four sealing lips, namely a first sealing lip, a second sealing lip, a third sealing lip and a fourth sealing lip are formed at the inner edge in a radial direction from an inner cavity of a bearing to the outside; and the first sealing lip, the second sealing lip and the fourth sealing lip are non-contact sealing lips, and the third sealing lip is a contact sealing lip. In the utility model, by arranging the four sealing lips on the sealing ring, a labyrinth structure is formed by the assembled sealing ring and a dustproof groove on an inner ring, thereby more effectively preventing water, dust and fine particles from entering rollaway nests as well as the phenomenon of resin leakage and prolonging the service life of the bearing.
Description
Technical field
The utility model belongs to rolling bearing structure, the labyrinth sealing circle of a kind of specifically contact seal, anti-water inlet, leakproof fat and comprise the bearing seal structure of sealing circle.
Background technique
The present bearing waterproof grommet that uses, because seal ring epipharynx and the place's bad connection of inner ring fluting, waterproofing effect are not good, extraneous sewage easily enters in the bearing channel, thereby makes grease deterioration, reduces the working life of bearing.
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition is that to overcome existing seal ring waterproofing effect good and reduce the bearing defective in working life, and a kind of labyrinth sealing circle and bearing seal structure are provided.
For this reason, the technological scheme that labyrinth sealing circle of the present utility model adopts is: it is to form four sealing lips at seal ring inward flange radially, these four sealing lips are followed successively by first sealing lip, second sealing lip, the 3rd sealing lip, the 4th sealing lip from inner chamber to the outside of bearing, first sealing lip, second sealing lip, the 4th sealing lip are the noncontact seal lip, and the 3rd sealing lip is the contact seal lip.Form maze-type structure thus.
The technological scheme that bearing seal structure of the present utility model adopts is: this bearing seal structure comprises bearing inner race and seal ring, it is characterized in that: form four sealing lips at seal ring inward flange radially, these four sealing lips are followed successively by first sealing lip, second sealing lip, the 3rd sealing lip, the 4th sealing lip from inner chamber to the outside of bearing, first sealing lip, second sealing lip, the 4th sealing lip are the noncontact seal lip, and the 3rd sealing lip is the contact seal lip; On described bearing inner race, be shaped on the outer shroud seal groove and be positioned at the primary sealing area of described outer shroud seal groove inboard and be positioned at the 4th sealing surface in the described outer shroud seal groove outside, the madial wall of described outer shroud seal groove forms the intermediate seal face, described primary sealing area, the 4th sealing surface are the cylndrical surface, and described intermediate seal face is inclined-plane toward the outer side; Described first sealing lip, the 4th sealing lip cooperate with described primary sealing area, the 4th sealing surface respectively and maintain the gap, described second sealing lip cooperates with described intermediate seal face and maintains the gap, and described the 3rd sealing lip contact is on described intermediate seal face; Form first oil storage space between described first sealing lip and second sealing lip, form second oil storage space between described second sealing lip and the 3rd sealing lip, described outer shroud seal groove is as the 3rd oil storage space.
As the optimization technique means, the lip cincture of described first sealing lip, the 4th sealing lip exterior feature is the cylndrical surface.Described first sealing lip, second sealing lip, the 3rd sealing lip are radially distributing successively, and described the 3rd sealing lip is positioned at path place.All to axial inboard the extension, described the 4th sealing lip extends to the axial outside for described first sealing lip, second sealing lip, the 3rd sealing lip, forms the flex point neck between described the 3rd sealing lip and second sealing lip.The width in the gap between described first sealing lip and the primary sealing area equals the width in the gap between the 4th sealing lip and the 4th sealing surface.
The utility model is by being provided with four sealing lips on seal ring, assembling condition forms labyrinth structure with the dustproof groove of inner ring down, and more effectively anti-sealing, dust and tiny material object enter raceway and leakage fat phenomenon, the working life of having improved bearing.
Description of drawings
Fig. 1 is the schematic representation that includes the bearing seal structure of seal ring of the present utility model.
Number in the figure explanation: 1-seal ring, 11-first sealing lip, 12-second sealing lip, 13-the 3rd sealing lip, 14-the 4th sealing lip; The 2-bearing inner race, 21-outer shroud seal groove, 22-primary sealing area, 23-intermediate seal face, 24-the 4th sealing surface, 25-flex point neck; K1-first oil storage space, K2-second oil storage space, K3-the 3rd oil storage space; Gap between T1-first sealing lip and the primary sealing area, the gap between T2-second sealing lip and the intermediate seal face, the gap between T4-the 4th sealing lip and the 4th sealing surface.
Embodiment
Below in conjunction with Figure of description the utility model is described further.
Shown in Figure 1 is the bearing seal structure schematic representation that includes seal ring of the present utility model, in view of seal ring 1 of the present utility model has been included in this bearing seal structure, in order to save literal, no longer seal ring of the present utility model is illustrated separately.
Bearing seal structure shown in Figure 1, comprise bearing inner race 2 and seal ring 1, at seal ring 1 four sealing lips of inward flange formation of (diagram above-below direction be radially) radially, these four sealing lips are followed successively by first sealing lip 11, second sealing lip 12, the 3rd sealing lip 13, the 4th sealing lip 14 from inner chamber (inner chamber of bearing is in illustrated left side) to outside (outside of bearing is on the illustrated right side) of bearing, first sealing lip 11, second sealing lip 12, the 4th sealing lip 14 are the noncontact seal lip, and the 3rd sealing lip 13 is the contact seal lip; On bearing inner race 2, be shaped on outer shroud seal groove 21 and be positioned at the primary sealing area 22 of outer shroud seal groove inboard and be positioned at the 4th of outer shroud seal groove 21 outsides and seal 24, the madial wall of outer shroud seal groove 21 forms intermediate seal face 23, primary sealing area 22, the 4th sealing surface 24 are the cylndrical surface, and intermediate seal face 23 is inclined-plane toward the outer side; First sealing lip 11, the 4th sealing lip 14 cooperate with primary sealing area 22, the 4th sealing surface 24 respectively and maintain gap T1, T2 respectively, second sealing lip 12 cooperates with intermediate seal face 23 and maintains gap T3, and 13 contacts of the 3rd sealing lip are on intermediate seal face 23; Form the first oil storage space K1 between first sealing lip 11 and second sealing lip 12, form the second oil storage space K2 between second sealing lip 12 and the 3rd sealing lip 13, outer shroud seal groove 21 is as the 3rd oil storage space K3.(promptly the design size of the 3rd sealing lip exceeds the size of intermediate seal face to the magnitude of interference of the 3rd sealing lip 13, shown in the figure this exceeds part, but under the practical set state, can not exceed the intermediate seal face, but utilize the distortion elasticity of sealing lip to rely on the intermediate seal face) determined the contact torque and the leakage prevention capability of seal ring 1, be crucial sealing together.Three oil storage space make sewage that enters or the grease that leaks can be docked to certain amount here under centrifugal action and just leak.Be that sewage that enters or the grease that leaks all must have the critical point, four roads that forms through four sealing lips, formed long labyrinth sealing circle, prevent that more effectively sewage from entering raceway and grease leakage phenomenon.
More specifically, the lip cincture exterior feature of first sealing lip 11, the 4th sealing lip 14 is the cylndrical surface; First sealing lip 11, second sealing lip 12, the 3rd sealing lip 13 are radially distributing successively, and the 3rd sealing lip 13 is positioned at path place; First sealing lip 11, second sealing lip 12, the 3rd sealing lip 13 are all to axially (the diagram left and right directions is axial) inboard extension, the 4th sealing lip 14 extends to the axial outside, form flex point neck 25 between the 3rd sealing lip 13 and second sealing lip 12, the thickness of this flex point neck 25 is good with elasticity and the rigidity of taking into account seal ring lip limit, this flex point neck can be realized with the wearing and tearing of the rotation of bearing and the 3rd sealing lip regulating automatically, guarantees the amount of contact of the 3rd sealing lip and intermediate seal face; The width of gap T1 between first sealing lip 11 and the primary sealing area 22 equals the width of the gap T2 between the 4th sealing lip and the 4th sealing surface, has guaranteed that the bearing inner and outer air pressure is identical, prevent extraneous sewage enter or internal grease leaks.
Claims (10)
1. labyrinth sealing circle (1), it is characterized in that: form four sealing lips at its inward flange radially, these four sealing lips are followed successively by first sealing lip (11), second sealing lip (12), the 3rd sealing lip (13), the 4th sealing lip (14) from inner chamber to the outside of bearing, first sealing lip (11), second sealing lip (12), the 4th sealing lip (14) are the noncontact seal lip, and the 3rd sealing lip (13) is the contact seal lip.
2. labyrinth sealing circle according to claim 1 is characterized in that the lip cincture exterior feature of described first sealing lip (11), the 4th sealing lip (14) is the cylndrical surface.
3. labyrinth sealing circle according to claim 1 and 2 is characterized in that described first sealing lip (11), second sealing lip (12), the 3rd sealing lip (13) are radially distributing successively, and described the 3rd sealing lip (13) is positioned at path place.
4. labyrinth sealing circle according to claim 3 is characterized in that described first sealing lip (11), second sealing lip (12), the 3rd sealing lip (13) all to axial inboard the extension, and described the 4th sealing lip (14) extends to the axial outside.
5. labyrinth sealing circle according to claim 3 is characterized in that forming between described the 3rd sealing lip (13) and second sealing lip (12) flex point neck (25).
6. bearing seal structure, comprise bearing inner race (2) and seal ring (1), it is characterized in that: form four sealing lips at seal ring (1) inward flange radially, these four sealing lips are followed successively by first sealing lip (11), second sealing lip (12), the 3rd sealing lip (13), the 4th sealing lip (14) from inner chamber to the outside of bearing, first sealing lip (11), second sealing lip (12), the 4th sealing lip (14) are the noncontact seal lip, and the 3rd sealing lip (13) is the contact seal lip; On described bearing inner race (2), be shaped on outer shroud seal groove (21) and be positioned at the inboard primary sealing area (22) of described outer shroud seal groove (21) and be positioned at the 4th sealing surface (24) outside the described outer shroud seal groove (21), the madial wall of described outer shroud seal groove (21) forms intermediate seal face (23), described primary sealing area (22), the 4th sealing surface (24) are the cylndrical surface, and described intermediate seal face (23) is inclined-plane toward the outer side; Described first sealing lip (11), the 4th sealing lip (14) cooperate with described primary sealing area (22), the 4th sealing surface (24) respectively and maintain gap (T1, T2) respectively, described second sealing lip (12) cooperates with described intermediate seal face (23) and maintains gap (T3), and described the 3rd sealing lip (13) contacts on described intermediate seal face (23); Between described first sealing lip (11) and second sealing lip (12), form first oil storage space (K1), form second oil storage space (K2) between described second sealing lip (12) and the 3rd sealing lip (13), described outer shroud seal groove (21) is as the 3rd oil storage space (K3).
7. bearing seal structure according to claim 6 is characterized in that the lip cincture exterior feature of described first sealing lip (11), the 4th sealing lip (14) is the cylndrical surface.
8. according to claim 6 or 7 described bearing seal structures, it is characterized in that described first sealing lip (11), second sealing lip (12), the 3rd sealing lip (13) are radially distributing successively, described the 3rd sealing lip (13) is positioned at path place.
9. bearing seal structure according to claim 8, it is characterized in that described first sealing lip (11), second sealing lip (12), the 3rd sealing lip (13) are all to axial inboard the extension, described the 4th sealing lip (14) extends to the axial outside, forms flex point neck (25) between described the 3rd sealing lip (13) and second sealing lip (12).
10. bearing seal structure according to claim 6 is characterized in that the width in the gap (T1) between described first sealing lip (11) and the primary sealing area (22) equals the width in the gap (T2) between the 4th sealing lip (13) and the 4th sealing surface (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205767233U CN201836392U (en) | 2010-10-26 | 2010-10-26 | Labyrinth sealing ring and bearing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205767233U CN201836392U (en) | 2010-10-26 | 2010-10-26 | Labyrinth sealing ring and bearing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836392U true CN201836392U (en) | 2011-05-18 |
Family
ID=44006496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205767233U Expired - Fee Related CN201836392U (en) | 2010-10-26 | 2010-10-26 | Labyrinth sealing ring and bearing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882995A (en) * | 2017-10-15 | 2018-04-06 | 衡水哈西特液压机械有限公司 | A kind of more lip labyrinth-type excluders |
| CN109253259A (en) * | 2018-10-23 | 2019-01-22 | 舍弗勒技术股份两合公司 | sealing device and bearing |
-
2010
- 2010-10-26 CN CN2010205767233U patent/CN201836392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882995A (en) * | 2017-10-15 | 2018-04-06 | 衡水哈西特液压机械有限公司 | A kind of more lip labyrinth-type excluders |
| CN109253259A (en) * | 2018-10-23 | 2019-01-22 | 舍弗勒技术股份两合公司 | sealing device and bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20111026 |