CN207569072U - A kind of shield bearing - Google Patents
A kind of shield bearing Download PDFInfo
- Publication number
- CN207569072U CN207569072U CN201721631426.2U CN201721631426U CN207569072U CN 207569072 U CN207569072 U CN 207569072U CN 201721631426 U CN201721631426 U CN 201721631426U CN 207569072 U CN207569072 U CN 207569072U
- Authority
- CN
- China
- Prior art keywords
- annular
- outer ring
- ring
- connecting portion
- sealing lip
- 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 - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model discloses a kind of shield bearing,Including inner ring,Outer ring,Ball is provided between inner ring and outer ring,Ring packing dust protection rubber circle is additionally provided between inner ring and outer ring,Ring packing dust protection rubber circle includes first connecting portion,Second connecting portion and dustproof part,First connecting portion annular groove and annular ledge,The first sealing lip and the second sealing lip are provided on the cell wall of annular groove,First sealing lip is contacted with the mating surface of outer ring and ball,Second sealing lip is contacted with annular ledge towards the wall portion on the outside of outer ring,Annular ledge top and annular groove line contact sealing,First sealing lip contacts sealing with outer ring face,Second sealing lip and outer ring line contact sealing,Second connecting portion includes the fixed projection of annular and annular mounting groove,The fixed projection of annular includes First Transition section,First arc section,Straightway,Second arc section,Second changeover portion.
Description
Technical field
The utility model is related to a kind of bearings, and in particular to a kind of shield bearing.
Background technology
Bearing is a kind of widely used machine components, whether aircraft, automobile, ship, lathe, motor or household
Electric appliance etc., it is every to have rotatably supported place, bearing is all be unable to do without, bearing sealed ring is a part of bearing, it main
Effect is to prevent extraneous dust, impurity from entering Bearing inner, avoids influencing the performance of bearing, and the bearing that the prior art provides is close
Seal and the connection of bearing are insecure, the phenomenon that sealing ring is fallen usually occur during bearing runs at high speed, meanwhile, it is existing
Dustband in the skeleton that sets cannot effectively prevent the deformation of sealing ring, after a period of use, sealing ring it occur frequently that
Deformation, and then bearing can not be effectively sealed.
Practical new shape content
To solve the deficiencies in the prior art, the purpose of the new shape of this practicality is to provide the bearing that can prevent dust.
To realize the above-mentioned technical purpose, technical solution is as follows used by the new shape of this practicality.
A kind of shield bearing including inner ring, outer ring, is provided with ball between inner ring and outer ring, ball can inner ring with it is outer
It is freely rolled in gap between circle, ring packing dust protection rubber circle is additionally provided between inner ring and outer ring, the annular is close
Envelope dust protection rubber circle includes first connecting portion, second connecting portion and is used to connect between first connecting portion and second connecting portion
First connecting portion is connect with second connecting portion and for dust-proof dustproof part, the first connecting portion includes being set to annular close
Seal dust protection rubber annular groove and be set on outer ring with the matched annular ledge of annular groove, the annular groove
Cell wall on be provided with the first sealing lip and the second sealing lip, the first sealing lip is contacted with the mating surface of outer ring and ball, second
Sealing lip is contacted with annular ledge towards the wall portion on the outside of outer ring, and the annular ledge top contacts close with annular groove line
Envelope, the section tip of first sealing lip is plane, and the first sealing lip contacts sealing, the described second sealing with outer ring face
Lip and outer ring line contact sealing, the annular that the second connecting portion includes being set on ring packing dust protection rubber circle are fixed prominent
It block and is set on inner ring and annular mounting groove that the fixed projection of annular matches, the fixed projection of the annular are pacified with annular
Tankage cooperation fixes ring packing dust protection rubber circle with inner ring, and the fixed projection of the annular includes First Transition section, first
Arc section, straightway, the second arc section, the second changeover portion, wherein the first arc section is between First Transition section and straightway,
Second arc section is between the second changeover portion and straightway, maximum distance and ring between the first arc section and the second arc section
Difference between type mounting groove groove width is 1-3mm.
As further improvement of the utility model.
It is additionally provided between the annular groove groove and annular ledge and holds fat gap, held and lubricating grease is filled in fat gap,
Movement of the lubricating grease between ring packing dust protection rubber circle and bearing outer ring is lubricated.
As further improvement of the utility model.
Support frame is additionally provided in the dustproof part, the support frame section is substantially in " C " shape, support frame
It can be embedded in dustproof part.
As further improvement of the utility model.
The notch openings of sizes of the annular mounting groove is gradually reduced by slot bottom to notch along groove depth direction, wherein notch
Minimum range and the fixed projection of annular on minimum range between First Transition section and the second changeover portion match, it is described
First Transition section and the second changeover portion are and the matched inclined-plane of annular mounting groove cell wall.
The new advantageous effect of shape compared with prior art of this practicality is that the utility model passes through two different connection sides
Formula is connect respectively with inner ring and outer ring, while leakproofness is improved, also enhances the fastness of connection.
Description of the drawings
In order to illustrate more clearly of the new shape embodiment of this practicality, letter will be done to attached drawing needed in the embodiment below
Single introduction, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the new shape of this practicality, general for this field
For logical technical staff, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the sectional view of the utility model.
Fig. 2 is the partial enlarged view in Fig. 1.
It is denoted as in figure：
10th, inner ring；
20th, outer ring；
30th, ball；
40th, ring packing dust protection rubber circle；
410th, first connecting portion；411st, annular groove；411a, the first sealing lip；411b, hold fat gap；It is 411c, second close
Seal lip；412nd, annular ledge；
420th, second connecting portion；421st, annular mounting groove；422nd, the fixed projection of annular；422a, First Transition section；422b、
First arc section；422c, straightway；422d, the second changeover portion；422e, the second arc section；
430th, support frame.
Specific embodiment
With reference to the attached drawing in the new shape embodiment of this practicality, the technical solution to this practicality in new shape embodiment carries out clear
Chu is fully described by, it is clear that described embodiment is only the new shape part of the embodiment of this practicality rather than all implements
Example.Based on the embodiment in the new shape of this practicality, those of ordinary skill in the art without making creative work, are obtained
The every other embodiment obtained belongs to the new shape protection domain of this practicality.
As shown in Figs. 1-2, a kind of shield bearing including inner ring 10, outer ring 20, is provided with rolling between inner ring 10 and outer ring 20
Pearl 30 freely rolls in the gap that ball 30 can be between inner ring 10 and outer ring 20, is additionally provided between inner ring 10 and outer ring 20
Ring packing dust protection rubber circle 40, the ring packing dust protection rubber circle 40 include first connecting portion 410, second connecting portion
420 and between first connecting portion 410 and second connecting portion 420 for connecting first connecting portion 410 and second connecting portion
420 and for dust-proof dustproof part, the first connecting portion 410 includes being set to the ring of ring packing dust protection rubber circle 40
Connected in star 411 and be set on outer ring 20 with 411 matched annular ledge 412 of annular groove, the annular groove 411
Cell wall on be provided with the first sealing lip 411a and the second sealing lip 411c, the first sealing lip 411a and outer ring 20 and ball 30
Mating surface contacts, and the second sealing lip 411c is contacted with the wall portion in annular ledge 412 towards 20 outside of outer ring, the annular ledge
412 tops and 411 line contact sealing of annular groove, the section tip of the first sealing lip 411a is plane, and first seals
Lip 411a contacts sealing, the second sealing lip 411c and 20 line contact sealing of outer ring with 20 face of outer ring, and that designs in this way is good
It is in since the first sealing lip 411a and outer ring 20 using face contact sealing, between the first sealing lip 411a and outer ring 20
Contact area is larger, and conducive to the fixation of ring packing dust protection rubber circle, line contacts close between the second sealing lip 411c and outer ring 20
Line contact sealing between envelope, annular ledge 412 and annular groove 411, twice line contact sealing are effectively guaranteed ring packing
Sealing performance between dust protection rubber circle 40 and outer ring 20；The second connecting portion 420 is dust-proof including being set to ring packing
Annular on rubber ring 40, which fixes projection 422 and is set to the annular to match on inner ring 10 with the fixed projection 422 of annular, pacifies
Tankage 421, the fixed projection 422 of the annular coordinate with annular mounting groove 421 by ring packing dust protection rubber circle 40 and inner ring
10 fix, and the fixed projection 422 of the annular includes First Transition section 422a, the first arc section 422b, straightway 422c, second
Arc section 422d, the second changeover portion 422e, wherein the first arc section 422b be located at First Transition section 422a and straightway 422c it
Between, the second arc section 422e is between the second changeover portion 422d and straightway 422c, the first arc section 422b and the second circular arc
The difference between maximum distance and annular mounting groove groove width between section 422e is 1-3mm, preferably 1-2mm, is designed in this way
Meaning be, when ring packing dust protection rubber circle 40 be mounted in bearing inner race 10 when, the first arc section 422b is by ring-like mounting groove
421 cell walls, which squeeze, generates elastic deformation, and further generate restores elastic force, and the second arc section 422e is in 421 slot of annular mounting groove
Elastic deformation is also generated under the extruding of wall, further generate restores elastic force, and two elastic force are respectively acting on annular mounting groove 421
Projection 422 and 421 cell wall of annular mounting groove are fixed in the side of cell wall and the direction of two elastic force on the contrary, under the action of elastic force
Fit closely, not only increase leakproofness, while but also ring packing dust protection rubber circle 40 it is firm be fixed on bearing inner race
On 10.
It is more perfect, it is additionally provided between the annular groove groove 411 and annular ledge 412 and holds fat gap 411b, held
Filled with lubricating grease in the 411b of fat gap, lubricating grease can be to the movement between ring packing dust protection rubber circle 40 and bearing outer ring 20
It is lubricated, slows down the abrasion of ring packing dust protection rubber circle 40, meanwhile, lubricating grease to form oil sealing at line contact sealing,
Further improve leakproofness.
More optimize, support frame 430 is additionally provided in the dustproof part, 430 section of support frame is big
Body is in " C " shape, and support frame 430 can be embedded in dustproof part, and design is advantageous in that in this way, and support frame 430 can be effective
The intensity of ring packing dust protection rubber circle 40 is improved, while can also play styling to ring packing dust protection rubber circle 40.
It is more perfect, the notch openings of sizes of the annular mounting groove 421 by slot bottom to notch along groove depth direction by
It is decrescence small, wherein the minimum range of notch and First Transition section 422a and the second changeover portion 422d in the fixed projection 412 of annular it
Between minimum range match, the First Transition section 422a and the second changeover portion 422d are and 421 slot of annular mounting groove
The matched inclined-plane of wall, design is advantageous in that in this way, and the cell wall of annular mounting groove 421 has along slot First Transition section 422a
Deep direction is directed vertically to the pressure of slot bottom, and similarly, 421 cell wall of annular mounting groove has along groove depth side the second changeover portion 422d
To the pressure for being directed vertically to slot bottom, so that the fixed projection 412 of annular is not easy to come off out of annular mounting groove 421, enhance
The stability of connection.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Shape；A variety of modifications of these embodiments will be apparent for those skilled in the art, the new shape of this practicality
Defined in General Principle can be in the case of the spirit or scope for not departing from the new shape of this practicality, in other embodiments
It realizes.Therefore, the new shape of this practicality will not be defined to the embodiments shown herein, and be to fit to it is disclosed herein
Principle and the consistent most wide range of features of novelty.
Claims (4)
1. a kind of shield bearing including inner ring, outer ring, is provided with ball between inner ring and outer ring, ball can be in inner ring and outer ring
Between gap in freely roll, ring packing dust protection rubber circle is additionally provided between inner ring and outer ring, which is characterized in that described
Ring packing dust protection rubber circle include first connecting portion, second connecting portion and positioned at first connecting portion and second connecting portion it
Between for connecting first connecting portion and second connecting portion and for dust-proof dustproof part, the first connecting portion includes setting
In ring packing dust protection rubber annular groove and be set on outer ring with the matched annular ledge of annular groove, it is described
The first sealing lip and the second sealing lip are provided on the cell wall of annular groove, the mating surface of the first sealing lip and outer ring and ball connects
It touches, the second sealing lip is contacted with annular ledge towards the wall portion on the outside of outer ring, the annular ledge top and annular groove line
Contact sealing, the section tip of first sealing lip are plane, and the first sealing lip contacts sealing with outer ring face, described the
Two sealing lips and outer ring line contact sealing, the second connecting portion include the annular being set on ring packing dust protection rubber circle
Fixed projection and be set to the annular mounting groove to match on inner ring with the fixed projection of annular, the fixed projection of the annular with
Annular mounting groove cooperation fixes ring packing dust protection rubber circle with inner ring, and the fixed projection of the annular includes First Transition
Section, the first arc section, straightway, the second arc section, the second changeover portion, wherein the first arc section is located at First Transition section and straight line
Between section, the second arc section is between the second changeover portion and straightway, the maximum between the first arc section and the second arc section
Difference between distance and ring-like mounting groove groove width is 1-3mm.
2. a kind of shield bearing according to claim 1, which is characterized in that between the annular groove groove and annular ledge
It is additionally provided with and holds fat gap, hold in fat gap and be used for filled with lubricating grease, lubricating grease to ring packing dust protection rubber circle and bearing
Movement between outer ring is lubricated.
3. a kind of shield bearing according to claim 1, which is characterized in that be additionally provided with support rib in the dustproof part
Frame, substantially in " C " shape, support frame can be embedded in dustproof part in the support frame section.
4. a kind of shield bearing according to claim 1, which is characterized in that the notch opening of the annular mounting groove is big
Small to be gradually reduced by slot bottom to notch along groove depth direction, wherein the minimum range of notch fixes First Transition section in projection with annular
Minimum range between the second changeover portion matches, and the First Transition section and the second changeover portion are and annular mounting groove
The matched inclined-plane of cell wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721631426.2U CN207569072U (en) | 2017-11-30 | 2017-11-30 | A kind of shield bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721631426.2U CN207569072U (en) | 2017-11-30 | 2017-11-30 | A kind of shield bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207569072U true CN207569072U (en) | 2018-07-03 |
Family
ID=62689022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721631426.2U Expired - Fee Related CN207569072U (en) | 2017-11-30 | 2017-11-30 | A kind of shield bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207569072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382785A (en) * | 2020-10-22 | 2022-04-22 | Nok株式会社 | Sealing device |
-
2017
- 2017-11-30 CN CN201721631426.2U patent/CN207569072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382785A (en) * | 2020-10-22 | 2022-04-22 | Nok株式会社 | Sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180703 Termination date: 20181130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |