CN101871489B - Rolling bearing inner ring and rolling bearing sealing structure - Google Patents
Rolling bearing inner ring and rolling bearing sealing structure Download PDFInfo
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- CN101871489B CN101871489B CN 201010215315 CN201010215315A CN101871489B CN 101871489 B CN101871489 B CN 101871489B CN 201010215315 CN201010215315 CN 201010215315 CN 201010215315 A CN201010215315 A CN 201010215315A CN 101871489 B CN101871489 B CN 101871489B
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- inner ring
- sealing
- sealing area
- rolling bearing
- angle
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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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
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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
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
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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
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a rolling bearing sealing structure, belonging to the bearing structure. The traditional sealing structure for sealing the rolling bearing is complex, and difficult to ensure a sealing lip to contact a sealed part reliably to form a reliable sealing. According to the invention, at least one side of a inner ring rolling way of an inner ring is provided with a first sealing surface on the outside and a second sealing surface on the inside, and an inclined angle Alpha between the first and second sealing surfaces is more than 100 degree and less than 180 degrees; an inclined angle Beta between the first sealing surface and an axial line of the inner ring is not less than 0 degree and not more than 45 degrees; an inclined angle Theta between the second sealing surface and the axial line of the inner ring is not less than 10 degrees and not more than 80 degrees; the inner edge of a sealing piece is provided with a first sealing lip edge in contact with the first sealing surface and a second sealing lip edge in contact with the second sealing surface; and therefore, a sealing groove structure can be simplified; the sealing surface can be ground by a formed grinding wheel at one time when the rolling way is ground; the precision requirement and the surface finish of the sealing surface are ensured, and the sealing lip can reliably contact the sealing surface to realize the precise sealing.
Description
Technical field
The invention belongs to bearing structure, specifically is rolling bearing inner ring and the rolling bearing sealing structure that guarantees the bearing seal effect.
Background technique
The rolling bearing of sealing normally remains on the rolling element on inner ring raceway and the outer ring raceway and is installed on the Sealing that is positioned between inner ring, the outer ring outside the rolling element by inner ring, outer ring and by retainer and constitutes; Sealing lip through seal edge is installed in the seal groove of inner ring and outer ring; Realization is to the sealing of bearing cavity, so dimensional accuracy, accuracy to shape, positional accuracy and the surface finishment of inner ring, outer ring seal groove directly influence the sealing effect of sealing lip and inner ring, outer ring.
The inside and outside lasso of rolling bearing axially upwards all can deform with the footpath at it after Overheating Treatment; Moreover dimensional accuracy, accuracy to shape, positional accuracy and the surface finishment of turning processing itself also is difficult to guarantee; Also have, in axial cumulative error, the seal groove of final very difficult assurance design is with respect to the relative accuracy of raceway behind inside and outside lasso process plain grinding, several procedures of raceway groove grinding.
At present; Reach more satisfactory sealing effect; Many factories have to, and the primary seal end face to each bar seal groove carries out a grinding or finish turning processing again after to the reference level grinding of lasso, because structural reason, processing is difficulty relatively; Take a lot of work, time-consuming, cost is high, effect also may not be desirable!
Existing inner ring seal groove is owing to receive the narrow limitation of project organization; When reality is used; When inside and outside lasso when generation is rocked each other in the axial plane (on the plane of axial extension); Even the sealing pair (sealing configuration that Sealing and seal groove form) that each item precision is very desirable, a side sealing interference that raceway also can occur increases and opposite side interference minimizing, and the side friction that interference increases, heating increase; The sealing effect reduction then possibly appear in opposite side, has a strong impact on sealing effect and sealing life.
Summary of the invention
The technical problem that the present invention will solve and the technical assignment of proposition are the seal structure complex that overcomes existing sealed rolling bearing; The reliable contact seal of sealing lip position forms the defective of reliable sealing when being difficult to guarantee actual use, and a kind of rolling bearing inner ring and rolling bearing sealing structure are provided.For this reason, the present invention adopts following technological scheme:
Rolling bearing inner ring; On its periphery, inner ring raceway is set; At least one side setting that it is characterized in that enclosing raceway within it by the primary sealing area that is positioned at the outside be positioned at the seal groove that inboard secondary sealing area forms; And the angle between described primary sealing area and the secondary sealing area is 100 °＜α＜180 °; Angle between the axis of described primary sealing area and said inner ring is 0 °≤β≤45 °, and the angle between the axis of described secondary sealing area and said inner ring is 10 °≤θ≤80 °.
Optimization technique measure as rolling bearing inner ring; Angle between described primary sealing area and the secondary sealing area is 125 °＜α＜165 °; Angle between the axis of described primary sealing area and said inner ring is 15 °≤β≤30 °, and the angle between the axis of described secondary sealing area and said inner ring is 50 °≤θ≤70 °.
As the optimization technique measure of rolling bearing inner ring, be provided with between described primary sealing area and the secondary sealing area transition cylndrical surface or groove or with described primary sealing area, the tangent arc surface of secondary sealing area.
Rolling bearing sealing structure comprises inner ring, outer ring, is remained on the rolling element on inner ring raceway and the outer ring raceway and be installed on the Sealing that is positioned at the said rolling element outside between said inner ring, the outer ring by retainer, it is characterized in that:
At least one side setting of the inner ring raceway of said inner ring by the primary sealing area that is positioned at the outside be positioned at the seal groove that inboard secondary sealing area forms; And the angle between described primary sealing area and the secondary sealing area is 100 °＜α＜180 °; Angle between the axis of described primary sealing area and said inner ring is 0 °≤β≤45 °, and the angle between the axis of described secondary sealing area and said inner ring is 10 °≤θ≤80 °;
Described Sealing is installed on the described outer ring through its outward edge, and the inward flange of said Sealing has contact on first sealing lip limit on the said primary sealing area and the second sealing lip limit that contacts on said secondary sealing area.
As the optimization technique measure of rolling bearing sealing structure, the section on the described first sealing lip limit and the second sealing lip limit is " people " font and arranges.
Optimization technique measure as rolling bearing sealing structure; Angle between described primary sealing area and the secondary sealing area is 125 °＜α＜165 °; Angle between the axis of described primary sealing area and said inner ring is 15 °≤β≤30 °, and the angle between the axis of described secondary sealing area and said inner ring is 50 °≤θ≤70 °.
As the optimization technique measure of rolling bearing sealing structure, be provided with between described primary sealing area and the secondary sealing area transition cylndrical surface or groove or with described primary sealing area, the tangent arc surface of secondary sealing area.
The invention has the beneficial effects as follows:
1, forms seal groove through at least one side setting by two sealing surfaces with certain positional relationship at the bearing inner race raceway; Make seal groove structure simple; When the raceway grinding, can use the sealing surface of forming grinding wheel disposable synchronous grinding formation seal groove; Guarantee required precision and the surface finishment of sealing surface, so that the reliable contact seal face of sealing lip is realized accurately sealing with respect to raceway.
2, when reality is used, when inside and outside lasso takes place to rock each other in axial plane, the probability and the influence of the sealing pair appearance " Yi Bian sealing interference increase another side sealing interference minimizing " of formation are minimized, thus lift-off seal effect and life-span.
Description of drawings
Fig. 1 is that rolling bearing sealing structure of the present invention is to dissect a kind of cross-section structure partial schematic diagram of gained through a plane of inner ring axis.
Fig. 2 is that rolling bearing sealing structure of the present invention is to dissect second kind of cross-section structure partial schematic diagram of gained through a plane of inner ring axis.
Fig. 3 is that rolling bearing sealing structure of the present invention is to dissect the third cross-section structure partial schematic diagram of gained through a plane of inner ring axis.
Fig. 4 is that rolling bearing sealing structure of the present invention is to dissect the 4th kind of cross-section structure partial schematic diagram of gained through a plane of inner ring axis.
Fig. 5 is that commonly sealed rolling bearing is to dissect a kind of cross-section structure partial schematic diagram of gained through a plane of inner ring axis.
Fig. 6 is that rolling bearing inner ring of the present invention is to dissect a kind of cross-section structure partial schematic diagram of gained through a plane of inner ring axis.
Fig. 7 is that the first sealing lip limit of rolling bearing sealing structure of the present invention and the section on the second sealing lip limit are the schematic representation that " people " font is arranged.
Label declaration among the figure: 1-inner ring, 2-Sealing, 3-primary sealing area, 4-secondary sealing area; The 5-inner ring raceway, the periphery of 6-inner ring, the inward flange of 7-Sealing, the 8-first sealing lip limit; The 9-second sealing lip limit, 10-cylndrical surface, 11-groove, 12-arc surface; The 13-seal groove, 14-outer ring, 15-retainer, 16-rolling element.
Embodiment
The present invention is further specified through specific embodiment below in conjunction with Figure of description.
Rolling bearing sealing structure of the present invention comprises inner ring 1, outer ring 14, is remained on the rolling element 16 on inner ring raceway and the outer ring raceway and be installed on the Sealing 2 that is positioned at the rolling element outside between inner ring, the outer ring by retainer 15, and characteristics are:
(this inner ring promptly is the rolling bearing inner ring of requirement protection of the present invention to described inner ring 1; In view of in explanation, comprising explanation to inner ring to each embodiment of rolling bearing sealing structure of the present invention; In order to practice thrift literal; The rolling bearing inner ring that no longer separately the present invention is required to protect describes); On its periphery 6, inner ring raceway 5 is set; At least one side (being illustrated as the left side of inner ring raceway) of enclosing raceway 5 within it is provided with that (this outside is for further from the position of inner ring raceway 5 near the end face of inner ring with being positioned at the seal groove 13 that inboard secondary sealing area 4 forms by the primary sealing area that is positioned at the outside 3; This inboard is for more near the position of inner ring raceway 5 away from the end face of inner ring); And the angle between primary sealing area 3 and the secondary sealing area 4 (this angle is defined as through the angle between a plane of inner ring axis and this primary sealing area 3 crossing plain lines that form and this plane and the secondary sealing area 4 crossing plain lines that form) is 100 °＜α＜180 ° (α wherein is the size of angle between primary sealing area 3 and the secondary sealing area 4); (this angle is defined as the angle through the axis of a plane of inner ring axis and this primary sealing area 3 crossing plain lines that form and inner ring to angle between the axis of primary sealing area 3 and inner ring; And the summit of this angle and seal groove are co-located in the same side of inner ring raceway, and Fig. 1-4 is the inner ring raceway left side; When seal groove is formed on the right-hand member of inner ring; The summit of this angle and seal groove are co-located in the right side of inner ring raceway) be 0 °≤β≤45 ° (β wherein is the size of angle between the axis of primary sealing area 3 and inner ring); (this angle is defined as the angle through the axis of a plane of inner ring axis and crossing plain line that forms of this secondary sealing area and inner ring to angle between the axis of secondary sealing area 4 and inner ring; And the summit of this angle and seal groove are co-located in the same side of inner ring raceway, and Fig. 1-4 is the inner ring raceway left side; When seal groove was formed on the right-hand member of inner ring, the summit of this angle and seal groove were co-located in the right side of inner ring raceway) be 10 °≤θ≤80 ° (θ wherein is the size of angle between the axis of secondary sealing area and inner ring); Further; Angle between primary sealing area and the secondary sealing area is 125 °＜α＜165 °; Angle between the axis of primary sealing area and inner ring is 15 °≤β≤30 °, and the angle between the axis of secondary sealing area and inner ring is that 50 °≤θ≤70 are ° for good.
Like Fig. 1, shown in 2 is first embodiment and second embodiment of rolling bearing sealing structure of the present invention, its α=135 °, β=15 °, θ=60 °.
As shown in Figure 3 is the 3rd embodiment of rolling bearing sealing structure of the present invention, its α=105 °, β=15 °, θ=90 °.
As shown in Figure 4 is the 4th embodiment of rolling bearing sealing structure of the present invention, its α=120 °, β=0 °, θ=60 °.
As further improving and replenishing to technique scheme; The present invention also comprises following additional technical characteristics; Be embodied in respectively among each embodiment among Fig. 1-4; Be preferred embodiment of the present invention, but the present invention is not limited to this situation, when embodiment of the present invention, they is selected for use on the described technological scheme of epimere according to concrete effect:
Shown in Fig. 1-4, the section on the first sealing lip limit 8 and the second sealing lip limit 9 is " people " font and arranges.So that contact preferably with primary sealing area 3 and secondary sealing area 4 respectively and realize sealing.
Be provided with cylndrical surface 10 (referring to Fig. 1,3) or groove 11 (referring to Fig. 2) or the arc surface 12 (referring to Fig. 4) tangent between primary sealing area 3 and the secondary sealing area 4 with primary sealing area 3, secondary sealing area 4.
The present invention forms seal groove through at least one side setting at the bearing inner race raceway by two sealing surfaces with certain positional relationship; These two sealing surfaces make outside always can be exposed to respect to inner ring axis; Simple in structure; Be convenient to carry out grinding fine finishing, guarantee each item precision and the surface finishment of sealing surface, so that the reliable contact seal face of the sealing lip of Sealing is realized sealing with forming grinding wheel.
Claims (7)
1. rolling bearing inner ring (1); Inner ring raceway (5) is set on its periphery (6); At least one side setting that it is characterized in that enclosing raceway (5) within it is by primary sealing area (3) that is positioned at the outside and the formed seal groove of secondary sealing area (4) (13) that is positioned at the inboard; And the angle between described primary sealing area (3) and the secondary sealing area (4) is 100 °＜α＜180 °; Angle between the axis of described primary sealing area (3) and said inner ring is 0 °≤β≤45 °, and the angle between the axis of described secondary sealing area (4) and said inner ring is 10 °≤θ≤80 °.
2. rolling bearing inner ring according to claim 1 (1); It is characterized in that angle between described primary sealing area (3) and the secondary sealing area (4) is 125 °＜α＜165 °; Angle between the axis of described primary sealing area (3) and said inner ring is 15 °≤β≤30 °, and the angle between the axis of described secondary sealing area (4) and said inner ring is 50 °≤θ≤70 °.
3. rolling bearing inner ring according to claim 1 and 2 (1), it is characterized in that being provided with between described primary sealing area (3) and the secondary sealing area (4) transition cylndrical surface (10) or groove (11) or with described primary sealing area (3), the tangent arc surface (12) of secondary sealing area (4).
4. rolling bearing sealing structure; Comprise inner ring (1), outer ring (14), remain on the rolling element (16) on inner ring raceway and the outer ring raceway and be installed on the Sealing (2) that is positioned at the said rolling element outside between said inner ring, the outer ring, it is characterized in that by retainer (15):
In at least one side setting of the inner ring raceway (5) of said inner ring (1) by primary sealing area (3) that is positioned at the outside and the formed seal groove of secondary sealing area (4) (13) that is positioned at the inboard; And the angle between described primary sealing area (3) and the secondary sealing area (4) is 100 °＜α＜180 °; Angle between the axis of described primary sealing area (3) and said inner ring is 0 °≤β≤45 °, and the angle between the axis of described secondary sealing area (4) and said inner ring is 10 °≤θ≤80 °;
Described Sealing (2) is installed on the described outer ring (14) through its outward edge, and the inward flange (7) of said Sealing (2) has contact on first sealing lip limit (8) on the said primary sealing area (3) and the second sealing lip limit (9) that contacts on said secondary sealing area (4).
5. rolling bearing sealing structure according to claim 4 is characterized in that the section on the described first sealing lip limit (8) and the second sealing lip limit (9) is " people " font layout.
6. rolling bearing sealing structure according to claim 4; It is characterized in that angle between described primary sealing area (3) and the secondary sealing area (4) is 125 °＜α＜165 °; Angle between the axis of described primary sealing area (3) and said inner ring is 15 °≤β≤30 °, and the angle between the axis of described secondary sealing area (4) and said inner ring is 50 °≤θ≤70 °.
7. rolling bearing sealing structure according to claim 4, it is characterized in that being provided with between described primary sealing area (3) and the secondary sealing area (4) transition cylndrical surface (10) or groove (11) or with described primary sealing area (3), the tangent arc surface (12) of secondary sealing area (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010215315 CN101871489B (en) | 2010-07-02 | 2010-07-02 | Rolling bearing inner ring and rolling bearing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010215315 CN101871489B (en) | 2010-07-02 | 2010-07-02 | Rolling bearing inner ring and rolling bearing sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101871489A CN101871489A (en) | 2010-10-27 |
| CN101871489B true CN101871489B (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010215315 Active CN101871489B (en) | 2010-07-02 | 2010-07-02 | Rolling bearing inner ring and rolling bearing sealing structure |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105387075A (en) * | 2015-11-05 | 2016-03-09 | 安徽日飞轴承有限公司 | Sealing strengthening bearing of water pump motor |
| US10927897B2 (en) * | 2018-09-04 | 2021-02-23 | Illinois Tool Works Inc. | Method and apparatus for a rolling bearing assembly with electrical discharge damage protection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201714845U (en) * | 2010-07-02 | 2011-01-19 | 陈炳顺 | Rolling bearing inner ring and rolling bearing sealing structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003148493A (en) * | 2001-11-13 | 2003-05-21 | Nsk Ltd | Rolling bearing |
| JP2005233249A (en) * | 2004-02-18 | 2005-09-02 | Koyo Seiko Co Ltd | Rolling bearing for supercharger |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201714845U (en) * | 2010-07-02 | 2011-01-19 | 陈炳顺 | Rolling bearing inner ring and rolling bearing sealing structure |
Non-Patent Citations (2)
| Title |
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| JP特开2003-148493A 2003.05.21 |
| JP特开2005-233249A 2005.09.02 |
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| CN101871489A (en) | 2010-10-27 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20101027 Assignee: Hangzhou sincere automobile bearing Co., Ltd Assignor: Chen Bingshun Contract record no.: 2015330000182 Denomination of invention: Rolling bearing inner ring and rolling bearing sealing structure Granted publication date: 20120201 License type: Exclusive License Record date: 20150703 |
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