CN104912942A - Rolling bearing with sealing gasket and annular shield - Google Patents
Rolling bearing with sealing gasket and annular shield Download PDFInfo
- Publication number
- CN104912942A CN104912942A CN201510239381.3A CN201510239381A CN104912942A CN 104912942 A CN104912942 A CN 104912942A CN 201510239381 A CN201510239381 A CN 201510239381A CN 104912942 A CN104912942 A CN 104912942A
- Authority
- CN
- China
- Prior art keywords
- guard shield
- annular lip
- rolling bearing
- gasket seal
- ring
- 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.)
- Pending
Links
Classifications
-
- 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
- F16C33/7859—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 further sealing element
- F16C33/7863—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 further sealing element mounted to the inner race, e.g. a flinger to use centrifugal effect
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
Abstract
The rolling bearing comprises an outer ring (4), an inner ring (6), a rolling body (10) arranged between the outer ring and the inner ring and a sealing gasket (20). The sealing gasket (20) is installed on the first ring (4) and extends towards the second ring (6), and thus the sealing edge (26) of the sealing gasket is in sliding contact with the second ring. An annular shield (50) is installed on a second ring (62) and extends towards the first ring (4) in a radial direction. The shield (50) is equipped with at least an annular lip (58) which is in sliding contact with the side surface (28) of the sealing gasket (20).
Description
The application is the application number submitted to on 04 02nd, 2010: 201080067020.0 denominations of invention are: the divisional application with the Chinese patent application of the rolling bearing of gasket seal and ring shield.
Technical field
The present invention relates to a kind of rolling bearing, except other parts, comprise be arranged on bearing outer ring on or gasket seal on inner ring, it extends towards the inner ring or outer ring with its sliding contact.
Background technique
Rolling bearing comprises inner ring, outer ring and some rolling elements be arranged between these two circles.These rolling elements can be ball, post or pin.With regard to the present invention, rolling bearing can be such as, ball bearing, roller bearing or needle bearing.
EP-A-1316736 discloses a kind of rolling bearing with the gasket seal extended between the inner ring and outer ring of bearing.In this bearing, on every side of rolling bearing, use ring shield for the protection of the contact area between gasket seal and inner ring.This guard shield avoids the gasket seal in stone or water collision contact area.But dust or water still can penetrate into the space limited between guard shield and pad, this may cause the pollution of contact area.
Summary of the invention
The present invention is intended to improve known equipment, when object is the gasket seal when use standard, improves their impermeability.
In order to this object, the present invention relates to a kind of rolling bearing, comprise outer ring, inner ring, be arranged on the rolling element between outer ring and inner ring, at least one is arranged on the gasket seal on the first lap in outer ring and inner ring, and it extends towards the second circle, so that the sealing the margin and second of gasket seal encloses sliding contact, and at least one is arranged on the ring shield extended on the second circle and towards first lap radial direction.According to the present invention, guard shield is provided with at least one annular lip and contacts with the side slip of gasket seal.
Due to the present invention, the pollution as liquid or particle is prevented from entering the space between guard shield and gasket seal, the contact area between the sealing the margin of this space next-door neighbour's gasket seal and second enclose.
In describing herein, word " axial ", " radial ", " axially ", " radially ", " centrifugal ", it is relevant that " centripetal " and similar word and rolling bearing one encloses the running shaft enclosed relative to another.The direction being parallel to this axis is " axis ", vertical and secant is " radial direction " in the direction of this axle.Surface perpendicular to this axle is " axis ", when surface is around this axle and when the direction perpendicular to surface is radial direction, surface is " radial direction ".
According to other favourable but not necessarily aspects of the present invention, rolling bearing of the present invention may in conjunction with one or more following features:
-first lap is outer ring and the second circle is inner ring.Alternately, first lap is inner ring and the second circle is outer ring.
-guard shield is metal or is made up of composite, as: polymer or elastomer.
-annular lip and boot main body are one.Alternately, annular lip is fixed to the side of boot main body, such as, by bonding, welding, sulfuration or clamp.According to the third method, annular lip can be over molded in the main body of guard shield.In this case, main body is advantageously provided several through hole and annular lip is over molded in these through holes.
-gasket seal has support and forms the flexible fittings of sealing the margin, and this accessory has the window entering stent area, and this support can receive annular lip with sliding contacting mode.
-gasket seal is provided with the annular lip with guard shield sliding contact.
-guard shield is provided with and two of gasket seal sliding contact annular lip.In this case, these annular lip can be parallel or be fork or convergence when leaving boot main body.
-annular lip has frusto-conical.
Accompanying drawing explanation
According to the description not limiting object of the present invention referring to accompanying drawing and as illustrated examples, the present invention will be better understood.In the accompanying drawings:
Fig. 1 is the cross sectional view according to rolling bearing of the present invention;
Fig. 2 is the zoomed-in view of the details II on Fig. 1;
Fig. 3 to Figure 10 is the detailed view being similar to Fig. 2 for other embodiments more of the present invention;
Figure 11 shows how a guard shield is applied to heteroid schematic diagram.
Embodiment
Fig. 1 describes ball bearing 2, and it comprises outer ring 4 and inner ring 6, and outer ring 4 and inner ring 6 define room 8 between which, and there, single group ball 10 is mounted and is held in place by retainer 12.Outer ring 4 fast rotational and inner ring 6 are relative to the central shaft X of outer ring 4 around ball bearing 2
2rotate.
Two gasket seals 20 and 30 to be installed on outer ring 4 and to extend towards inner ring 6.More accurately, outer ring 4 is provided with two grooves 42 and 44, and there, a part for gasket seal 20 and 30 is wedged.
Gasket seal 20 is made up of Steel Support 22 and elasticity accessory 24, and elasticity accessory 24 is around support 22 and define the sealing the margin 26 with outer radial face 62 sliding contact of inner ring 6.
Gasket seal 30 is identical with gasket seal 20, also comprises the accessory 34 of support 32 and restriction sealing the margin 36.
Two ring shields 50 and 70 to be installed on inner ring 6 and to be suitable for protection gasket seal 20 and 30 to prevent such as from the shock of the stone in the external world, and prevent humidity, especially water.Guard shield 50 and 70 especially more protects sealing the margin 26 and 36 and surface 62, the slide contact zone namely between gasket seal 20 and 30 and inner ring 6.
Guard shield 50 and 70 is identical.
Guard shield 50 has interior radial curved section 52, and it is suitable for being blocked in the internal circle groove 64 of inner ring 6, and object keeps guard shield 50 relative to inner ring 6.Guard shield 50 also has outer radial part 54, and when relative to room 8, it is outwards recessed and to convex.
Between part 52 and 54, guard shield 50 is flat, and forms the main body 56 with part 52 and 54 one.
The shape of outer radial part 54 and the outer side surface 28 of gasket seal 20 will enter region Z
1be defined as the annular volume between parts 20 and 50.Face 28 is axial vane surfaces of pad 20.The arcuate shape of outer radial part 54 means, compared with other sizes of rolling bearing 2, and region Z
1minimal axial width W
1little.Region Z
1this little width W
1prevent most of pollutant to enter annular space between parts 50 and 70, and stop their to arrive contact area Z between edge 26 and surface 62
2.The arcuate shape of exterior section 54 also allows that guard shield 50 passes through because it is around axle X
2centrifugal or " air draft " effect ejection pollutant rotated.
Guard shield 50 is provided with annular lip 58, its be frusto-conical and with outer side surface 28 sliding contact of gasket seal 20.Annular lip 58 prevents can via entering region Z between parts 20 and 50
1the pollutant of infiltration arrives the contact area Z between sealing the margin 26 and surface 62
2.
Therefore, auxiliary seal function can be obtained between gasket seal 20 and guard shield 50 and gasket seal 20 need not be improved.Therefore this pad can be standardized product, can produce in a large number and have low cost.
Same, guard shield 70 is provided with annular seal lip 78, outside axial vane surface 38 sliding contact of itself and gasket seal 20.
Guard shield 50 and 70 is metals.Alternately, guard shield 50 and 70 can use composite manufacture, and such as, plastics, as polymer, such as PA 4.6 or PA 6.6, it can be used or can without glass fibre or PEEK strengthening.Also guard shield can be manufactured with elastomer.This can be applicable to all embodiments.
The main body 56 and 76 of annular lip 58 and 78 and guard shield 50 and 70 is integrated.
In Fig. 3 to Figure 10 represents of the present invention second to the 9th embodiment, the element being similar to the first embodiment has identical reference character.After this, the main difference described between the second to the nine embodiment and the first embodiment.Except as otherwise noted, the second to the nine embodiment works as in the first embodiment.
In a second embodiment, guard shield 50 is identical with the first embodiment, and the accessory 24 of gasket seal 20 defines window 25, and it allows the direct contact between the free edge 582 of annular lip 58 and support 22.The damage of accessory 24 is avoided in this metal/metal contact.
In the third embodiment of the present invention, guard shield 50 is identical with the guard shield of the first embodiment, and the accessory 24 of gasket seal 20 is provided with as the window 25 in the second embodiment.Accessory 24 also forms annular lip 27, and its sliding contact, against the inner side axial vane surface 57 of guard shield 50, contacts with the double-sealing between annular lip 27 respectively to obtain between support 22 and annular lip 58 and in the main body 56 of guard shield 50.This embodiment needs for the specially designed gasket seal 20 of this function, and it is not the situation for other embodiments of great majority.
In the 5 embodiment of figure 5, annular lip 58 is obtained by over-molded (overmold) elastic ring lip 58 in the main body 56 of guard shield 50.In this case, gasket seal 20 is identical with the gasket seal of the first embodiment.In fact, around the central shaft of guard shield 50, through hole 562 is made through main body 56 regularly, and they are used as the anchoring device of annular lip 58.This structure allows the contact between guard shield 50 and gasket seal 20 to carry out between two elastic members, namely carries out between annular lip 58 and accessory 24.
In the embodiment in fig 6, guard shield 50 is provided with two sealing lips 58,58 ', they be parallel and with identical side axial vane surface 28 sliding contact of gasket seal 20, this side is made up of elasticity accessory 24.These two annular lip 58 and 58 ' enter the through hole 562,562 ' of the main body 56 of guard shield 50 by more over-molded elastomers and make, as the embodiment in Fig. 5.
In the embodiment of Fig. 7, two lips being made up of plastic materials 58 and 58 ' be bonded to also be the guard shield 50 be made of plastics main body 56 on, lip 58 and 58 ' and side axial vane surface 28 sliding contact of gasket seal 20.Alternately, annular lip 58 and 58 ' can cure or weld on body 56.Alternately, these two lips also can become be integrated with main body, as the single lip 58 of the first embodiment.
In the first six embodiment of the present invention, the annular lip produced by guard shield 50 or multiple annular lip 58 and 58 ' extend towards circle 4 when leaving the inside face 57 of guard shield 50.
In the embodiment in fig. 8, two annular lip 58 and 58 ' be integrated with the main body 56 one-tenth of guard shield 50 extend towards inner ring 6 when leaving the inner side axial vane surface 57 of main body 56.
At Fig. 6, in the embodiment of 7 and 8, sealing lip 58 and 58 ' is parallel.
In the embodiment in fig. 9, annular lip 58 and 58 ' diverges when leaving the inner side axial vane surface 57 of guard shield 50.More particularly, the annular lip 58 of close inner ring 6 is towards this inner ring 6 orientation, and the annular lip 58 ' near outer ring 4 is towards outer ring 4 orientation.
In the embodiment in figure 10, annular lip 58 and 58 ' converges when leaving the inside face 57 of guard shield 50.In other words, the annular lip 58 of close inner ring 6 is towards outer ring 4 orientation, and the annular lip 58 ' near outer ring 4 is towards inner ring 6 orientation.
As shown in figure 11, identical guard shield 50 can be installed in three inner rings 6,6 ' and 6 of the rolling bearing with different respective radial thicknesss " on so that the lip of guard shield 58 can be arranged on outer ring 4; 4 ' and 4 " on gasket seal 20,20 ' and 20 " interact.Gasket seal shown in Figure 11 20,20 ' and 20 " be of different sizes, the sealing lip 58 of guard shield 50 can in the side 28,28 ' of these pads and 28 " on the diverse location place pad different from these coordinate.Each structure shown in Figure 11 is shown having the guard shield of Fig. 5.Also the guard shield of other embodiments can be adopted in these structures.
According to alternate embodiment of the present invention, on the inner ring 6 that gasket seal 20 and 30 can be installed in rolling bearing 2 and by their edge 26 or 36 and outer ring 4 sliding contact.In this case, guard shield 50 and 70 is arranged on outer ring 4.According to the present invention, they are provided with annular lip, and this annular lip sliding contact is against the outer axial vane surface 28 and 38 of the side of gasket seal.
In the embodiment of Fig. 2 to Figure 10, guard shield has the arc outer radial part similar to the position 54 of the first embodiment.
The technical characteristics that above-described embodiment relates to can be combined.
Claims (17)
1. a rolling bearing (2), comprising:
-outer ring (4),
-inner ring (6),
-be arranged in rolling element (10) between outer ring and inner ring,
-at least one gasket seal (20,30), described gasket seal (20,30) be arranged on the first lap (4) in described outer ring and described inner ring, and extend towards the second circle (6) in described outer ring and described inner ring, so that the sealing the margin (26,36) and second of described gasket seal encloses sliding contact
-at least one ring shield (50,70), it is upper and towards described first lap radially that described ring shield (50,70) is arranged on described second circle,
Wherein said guard shield (50,70) is provided with side (28, the 38) sliding contact of at least one annular lip (58,58 ', 78) and described gasket seal (20,30),
Wherein said gasket seal (20,30) has support (22; 32) and formed described sealing the margin (26,36) flexible fittings (24,34), and wherein said accessory has the window (25) in the region entering described support, described support receives described annular lip (58 with sliding contacting mode, 58 ', 78).
2. rolling bearing according to claim 1, wherein said first lap is described outer ring (4) and described second circle is described inner ring (6).
3. rolling bearing according to claim 1, wherein said first lap is described inner ring (6) and described second circle is described outer ring (4).
4., according to the rolling bearing one of claim 1-3 Suo Shu, wherein said guard shield (50,70) is metal.
5., according to the rolling bearing one of claim 1-3 Suo Shu, wherein said guard shield (50,70) is made up of composite.
6., according to the rolling bearing one of claim 1-3 Suo Shu, wherein said annular lip (58,58 ', 78) and the main body (56,76) of described guard shield (50,70) are one.
7., according to the rolling bearing one of claim 1-3 Suo Shu, wherein said annular lip (58,58 ', 78) is fixed to the side (57) of the main body (56,76) of described guard shield.
8., according to the rolling bearing one of claim 1-3 Suo Shu, wherein said annular lip (58,58 ', 78) is by the over-molded main body (56,76) arriving described guard shield (50,70).
9. rolling bearing according to claim 8, wherein said main body (56,76) is provided with several through hole (562,562 ') and described annular lip (58,58 ', 78) is over molded in these through holes.
10. the rolling bearing according to claim 1-3, wherein said gasket seal (20,30) is provided with annular lip (27) and described guard shield (50,70) sliding contact.
11. rolling bearings according to claim 1-3, wherein said guard shield (50,70) is provided with two annular lip (58,58 ') and described gasket seal (20,30) sliding contact.
12. rolling bearings according to claim 11, wherein said annular lip (58,58 ') is parallel.
13. rolling bearings according to claim 11, wherein said annular lip (58,58 ') diverges when leaving main body (56) of described guard shield.
14. rolling bearings according to claim 11, wherein said annular lip (58,58 ') converges when leaving main body (56) of described guard shield.
15. according to the rolling bearing one of claim 1-3 Suo Shu, and wherein said annular lip (58,58 ', 78) has frusto-conical.
16. rolling bearings according to claim 5, wherein said guard shield (50,70) is made up of polymer or elastomer.
17. rolling bearings according to claim 7, wherein said annular lip (58,58 ', 78) is by bonding, welding, sulfuration or the side (57) of clamping the main body (56,76) being fixed to described guard shield.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201080067020.0A CN102918288B (en) | 2010-04-02 | 2010-04-02 | Rolling bearing comprising sealing gasket and an annular shield |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080067020.0A Division CN102918288B (en) | 2010-04-02 | 2010-04-02 | Rolling bearing comprising sealing gasket and an annular shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104912942A true CN104912942A (en) | 2015-09-16 |
Family
ID=54106053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510239381.3A Pending CN104912942A (en) | 2010-04-02 | 2010-04-02 | Rolling bearing with sealing gasket and annular shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104912942A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397679A (en) * | 2018-04-24 | 2019-11-01 | 斯凯孚公司 | Floating bearing with seal arrangement |
| IT202100029606A1 (en) * | 2021-11-24 | 2023-05-24 | Skf Ab | BEARING UNIT WITH SEAL DEVICE |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792242A (en) * | 1987-01-28 | 1988-12-20 | Riv-Skf Officine Di Villar Perosa S.P.A. | Tight bearing suitable for exceptionally heavy duty conditions |
| CN1145108A (en) * | 1994-03-31 | 1997-03-12 | 托林顿公司 | Sealing structure for a bearing |
| US6042272A (en) * | 1996-01-22 | 2000-03-28 | Nsk Ltd. | Rolling bearing with a sealing device |
| US20030103700A1 (en) * | 2001-11-30 | 2003-06-05 | Skf Industrie S.P.A. | Contact rolling bearing |
| JP2009216139A (en) * | 2008-03-07 | 2009-09-24 | Jtekt Corp | Sealing device for bearing |
| CN102918288B (en) * | 2010-04-02 | 2015-06-10 | Skf公司 | Rolling bearing comprising sealing gasket and an annular shield |
-
2010
- 2010-04-02 CN CN201510239381.3A patent/CN104912942A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792242A (en) * | 1987-01-28 | 1988-12-20 | Riv-Skf Officine Di Villar Perosa S.P.A. | Tight bearing suitable for exceptionally heavy duty conditions |
| CN1145108A (en) * | 1994-03-31 | 1997-03-12 | 托林顿公司 | Sealing structure for a bearing |
| US6042272A (en) * | 1996-01-22 | 2000-03-28 | Nsk Ltd. | Rolling bearing with a sealing device |
| US20030103700A1 (en) * | 2001-11-30 | 2003-06-05 | Skf Industrie S.P.A. | Contact rolling bearing |
| JP2009216139A (en) * | 2008-03-07 | 2009-09-24 | Jtekt Corp | Sealing device for bearing |
| CN102918288B (en) * | 2010-04-02 | 2015-06-10 | Skf公司 | Rolling bearing comprising sealing gasket and an annular shield |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397679A (en) * | 2018-04-24 | 2019-11-01 | 斯凯孚公司 | Floating bearing with seal arrangement |
| CN110397679B (en) * | 2018-04-24 | 2022-07-05 | 斯凯孚公司 | Slewing bearing with sealing arrangement |
| IT202100029606A1 (en) * | 2021-11-24 | 2023-05-24 | Skf Ab | BEARING UNIT WITH SEAL DEVICE |
| US11933361B2 (en) | 2021-11-24 | 2024-03-19 | Aktiebolaget Skf | Bearing unit with a sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150916 |
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| WD01 | Invention patent application deemed withdrawn after publication |