CN220850427U - Sealed bearing - Google Patents
Sealed bearing Download PDFInfo
- Publication number
- CN220850427U CN220850427U CN202322884444.3U CN202322884444U CN220850427U CN 220850427 U CN220850427 U CN 220850427U CN 202322884444 U CN202322884444 U CN 202322884444U CN 220850427 U CN220850427 U CN 220850427U
- Authority
- CN
- China
- Prior art keywords
- lip
- inner ring
- clamping groove
- bearing
- sealing
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 60
- 239000004519 grease Substances 0.000 claims abstract description 51
- 230000000903 blocking effect Effects 0.000 claims abstract description 32
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 9
- 230000001603 reducing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Sealing Of Bearings (AREA)
Abstract
The utility model provides a sealed bearing, which comprises a bearing inner ring, a bearing outer ring, a retainer and rolling bodies, wherein sealing rings are arranged on two sides between the bearing inner ring and the bearing outer ring, each sealing ring comprises a sealing ring main body and a framework, inner ring clamping grooves are formed in the outer walls of the two sides of the bearing inner ring, a connecting part is arranged at the inner edge of each sealing ring main body, a grease blocking lip and a contact lip are arranged on each connecting part, each contact lip stretches into each inner ring clamping groove, the lower surface of each grease blocking lip is lower than the end surface of the inner side wall of each inner ring clamping groove, a gap is reserved between the inner side surface of each grease blocking lip and the inner side wall of each inner ring clamping groove, a dustproof lip is arranged on the outer side of each connecting part, and the lower surface of each dustproof lip is positioned above the end surface of the outer side wall of each inner ring clamping groove and is reserved with a gap. The grease blocking lip can block the lubricating grease from entering the inner ring clamping groove, so that the risk of leakage of the lubricating grease is reduced; meanwhile, the grease blocking lip is not contacted with the inner ring clamping groove, so that the bearing has the advantages of light torque and low energy consumption, and the sealing performance of the bearing is improved.
Description
Technical Field
The utility model relates to the technical field of bearings, in particular to a sealing bearing.
Background
The sealed bearing has the advantages of compact structure, standardization, relatively low cost, convenient installation and replacement and the like, and has wide application in the industrial and civil fields. The sealed bearing consists of an inner ring, an outer ring, rolling bodies and a retainer, wherein the rolling bodies and the retainer are uniformly distributed between the raceways of the inner ring and the outer ring, lubricating grease is arranged in the bearing, and sealing rings are arranged on two sides of the bearing. The outer lip of the sealing ring is pressed into the outer ring clamping groove through interference fit, and the inner lip is tightly matched with the inner ring clamping groove to form sealing. The function is to prevent the leakage of grease inside the bearing and the invasion of external impurities.
Particularly, the bearing used at the near end of the sensor such as a servo motor, a laser radar and the like has extremely high requirements on the sealing performance of the bearing, and can not leak grease or even oil stain. The existing sealing bearing mainly comprises a bearing inner ring, a bearing outer ring, a retainer, rolling bodies and a sealing ring, wherein the sealing ring generally comprises a main body and a framework, a grease blocking lip and a contact lip are arranged at the inner edge of the main body, the contact lip stretches into an inner ring clamping groove and is tightly matched with the inner ring clamping groove, and the grease blocking lip is higher than the end face of the inner ring clamping groove and is provided with a gap. In the use process of the bearing, part of grease can enter the inner ring clamping groove through the grease blocking lip, the inner ring clamping groove and the gap, and once the contact lip is worn, grease leakage easily occurs, so that the extremely high sealing performance requirement is difficult to meet.
Disclosure of Invention
The object of the present utility model is to provide a sealed bearing which solves the technical problems mentioned in the background art.
In order to achieve the above object, the technical scheme of the present utility model is as follows: the utility model provides a sealed bearing, includes bearing inner race, bearing outer lane, holder and rolling element, both sides between bearing inner race and the bearing outer lane are equipped with the sealing washer, the sealing washer includes the sealing washer main part and locates the skeleton in this sealing washer main part, outer lane draw-in groove has been seted up on the both sides inner wall of bearing outer lane, the inner race draw-in groove has been seted up on the both sides outer wall of bearing inner race, the outer edge sealing mounting of sealing washer main part is in corresponding in the outer lane draw-in groove, the inner edge sealing mounting of sealing washer main part is in corresponding in the inner lane draw-in groove, the inner edge of sealing washer main part is equipped with connecting portion, is equipped with fender fat lip and contact lip on this connecting portion, the contact lip stretch into in the inner lane draw-in groove and with the inboard lateral wall of inner lane draw-in groove contacts, fender fat lip is located the inboard of connecting portion and be located the top of contact lip, just the lower surface of fender fat lip is less than the inboard lateral wall terminal surface of inner lane draw-in groove, keep a clearance between the inboard side of fender fat lip and the inboard lateral wall of inner lane.
Preferably, the upper surface of the fat retaining lip is higher than the end surface of the inner side wall of the inner ring clamping groove, and the upper surface of the fat retaining lip is obliquely arranged.
Preferably, the connecting part is further provided with a dust lip, the dust lip is located at the outer side of the connecting part, and the lower surface of the dust lip is located above the end surface of the outer side wall of the inner ring clamping groove and is provided with a gap.
Preferably, the outer side wall end surface of the inner ring clamping groove is lower than the inner side wall end surface of the inner ring clamping groove.
Preferably, an inner pressure reducing groove is formed between the dust lip and the seal ring main body.
Preferably, an oil guide groove is formed between the grease blocking lip and the contact lip.
Preferably, the outer edge of the seal ring main body is provided with a seal outer lip which is in contact with the outer ring clamping groove.
Preferably, an outer elastic groove is formed between the seal outer lip and the seal ring main body.
Compared with the prior art, the utility model has the beneficial effects that: the lower surface of the grease blocking lip is lower than the end surface of the inner side wall of the inner ring clamping groove, a gap is reserved between the inner side surface of the grease blocking lip and the inner side wall of the inner ring clamping groove, the grease blocking lip can guide lubricating grease to the direction of the sealing ring main body and prevent the lubricating grease from entering the inner ring clamping groove from the gap between the grease blocking lip and the inner ring clamping groove, so that the risk of lubricating grease leakage is reduced, and the burden of the contact lip is also reduced; meanwhile, the grease blocking lip is not contacted with the inner ring clamping groove, so that the grease blocking lip has the advantages of light torque and low energy consumption. The dust lip prevents most of external impurities and dust from corroding the sealed bearing, and the labyrinth sealing path formed by the combination of gap sealing and contact sealing at different positions in space is lengthened, so that the sealing performance of the bearing is greatly improved, and the sealing performance of the labyrinth sealing bearing is better than that of the existing sealing bearing through tests.
Drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is an enlarged partial cross-sectional view of the present utility model.
Fig. 3 is an enlarged partial cross-sectional view of the seal ring of the present utility model.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in fig. 1-3, the utility model provides a sealed bearing, which comprises a bearing inner ring 1, a bearing outer ring 2, a retainer 3 and rolling bodies 4, wherein sealing rings are arranged on two sides between the bearing inner ring 1 and the bearing outer ring 2, each sealing ring comprises a sealing ring main body 5 and a framework 6 arranged in the corresponding sealing ring main body 5, outer ring clamping grooves 7 are formed in two inner walls of the bearing outer ring 2, inner ring clamping grooves 8 are formed in two outer walls of the bearing inner ring 1, outer edges of the sealing ring main bodies 5 are arranged in the corresponding outer ring clamping grooves 7 in a sealing manner, inner edges of the sealing ring main bodies 5 are arranged in the corresponding inner ring clamping grooves 8 in a sealing manner, connecting parts 9 are arranged on the inner edges of the sealing ring main bodies 5, grease blocking lips 10 and contact lips 11 are arranged on the connecting parts 9 and are stretched into the inner ring clamping grooves 8 and are contacted with inner side walls 12 of the inner ring clamping grooves 8, the grease blocking lips 10 are positioned on the inner sides of the connecting parts 9 and are positioned above the corresponding inner side walls of the contact lips, and the inner side walls of the grease blocking lips 10 are lower than the inner side walls 12 of the inner ring clamping grooves 10. The lower surface of the grease blocking lip 10 is lower than the end face 13 of the inner side wall of the inner ring clamping groove 8, a gap is reserved between the inner side face of the grease blocking lip 10 and the inner side wall 12 of the inner ring clamping groove 8, the gap is small, most of lubricating grease can be prevented from passing through the gap, the grease blocking lip 10 can be prevented from being contacted with the inner ring clamping groove 8, the grease blocking lip 10 can block the lubricating grease and cannot enter the inner ring clamping groove 8 from the gap between the grease blocking lip 10 and the inner ring clamping groove 8, the risk of leakage of the lubricating grease is reduced, and the burden of the contact lip 11 is also reduced; meanwhile, the grease blocking lip 10 is not contacted with the inner ring clamping groove 8, so that the bearing has the advantages of light torque and low energy consumption, and the sealing performance of the bearing is greatly improved.
Preferably, the upper surface of the grease retainer lip 10 is higher than the inner side wall end surface 13 of the inner ring groove 8, and the upper surface of the grease retainer lip 10 is inclined, and the upper surface of the grease retainer lip 10 may guide the grease to flow in the direction of the seal ring body, so that the grease hardly enters the inner ring groove 8.
Preferably, the connecting portion 9 is further provided with a dust-proof lip 14, the dust-proof lip 14 is located at the outer side of the connecting portion 9, the lower surface of the dust-proof lip 14 is located above the outer side wall end surface 15 of the inner ring clamping groove 8 and is provided with a gap, the dust-proof lip 14 can prevent external dust and impurities from entering the inner ring clamping groove 8, abrasion of the contact lip 11 is avoided, and the lower surface of the dust-proof lip 14 is provided with a gap with the outer side wall end surface 15 of the inner ring clamping groove 8, namely, the dust-proof lip 14 is not contacted with the inner ring clamping groove 8, the dust-proof lip 14 is not easy to wear, and energy consumption can be reduced.
Preferably, the outer side wall end surface 15 of the inner ring clamping groove 8 is lower than the inner side wall end surface 13 of the inner ring clamping groove 8, so that a better dust sealing effect is achieved.
Preferably, an inner pressure reducing groove 16 is formed between the dust lip 14 and the seal ring main body 1, so as to achieve a pressure reducing effect on the seal ring.
Preferably, an oil guiding groove 17 is formed between the grease blocking lip 10 and the contact lip 11, and a small amount of grease can be stored in the oil guiding groove 17 to provide lubrication, thereby reducing friction and abrasion of the contact lip 11.
Preferably, the outer edge of the seal ring main body 5 is provided with a seal outer lip 18 contacting with the outer ring clamping groove 7, so that the sealing effect is good.
Preferably, an outer elastic groove 19 is formed between the sealing outer lip 18 and the sealing ring main body 1, so that the sealing ring is mounted in the outer ring clamping groove to keep certain elasticity, and the reliable mounting effect is ensured.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. The utility model provides a sealed bearing, includes bearing inner race, bearing outer lane, holder and rolling element, both sides between bearing inner race and the bearing outer lane are equipped with the sealing washer, the sealing washer includes the sealing washer main part and locates the skeleton in this sealing washer main part, outer lane draw-in groove has been seted up on the both sides inner wall of bearing outer lane, inner ring draw-in groove has been seted up on the both sides outer wall of bearing inner race, the outer edge sealing installation of sealing washer main part is in corresponding in the outer lane draw-in groove, the inner edge sealing installation of sealing washer main part is in corresponding in the inner ring draw-in groove, its characterized in that: the inner edge of the sealing ring main body is provided with a connecting part, the connecting part is provided with a grease blocking lip and a contact lip, the contact lip stretches into the inner ring clamping groove and contacts with the inner side wall of the inner ring clamping groove, the grease blocking lip is positioned on the inner side of the connecting part and above the contact lip, the lower surface of the grease blocking lip is lower than the end surface of the inner side wall of the inner ring clamping groove, and a gap is reserved between the inner side surface of the grease blocking lip and the inner side wall of the inner ring clamping groove.
2. The sealed bearing of claim 1, wherein: the upper surface of the grease blocking lip is higher than the end face of the inner side wall of the inner ring clamping groove, and the upper surface of the grease blocking lip is obliquely arranged.
3. A sealed bearing according to claim 1 or 2, characterized in that: the connecting part is also provided with a dustproof lip, the dustproof lip is positioned at the outer side of the connecting part, and the lower surface of the dustproof lip is positioned above the end surface of the outer side wall of the inner ring clamping groove and is provided with a gap.
4. A sealed bearing according to claim 3, wherein: the end face of the outer side wall of the inner ring clamping groove is lower than the end face of the inner side wall of the inner ring clamping groove.
5. A sealed bearing according to claim 3, wherein: an inner decompression groove is formed between the dustproof lip and the sealing ring main body.
6. A sealed bearing according to claim 1 or 2, characterized in that: an oil guide groove is formed between the grease blocking lip and the contact lip.
7. A sealed bearing according to claim 1 or 2, characterized in that: and the outer edge of the sealing ring main body is provided with a sealing outer lip which is contacted with the outer ring clamping groove.
8. The sealed bearing of claim 7, wherein: an outer elastic groove is formed between the sealing outer lip and the sealing ring main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322884444.3U CN220850427U (en) | 2023-10-26 | 2023-10-26 | Sealed bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322884444.3U CN220850427U (en) | 2023-10-26 | 2023-10-26 | Sealed bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220850427U true CN220850427U (en) | 2024-04-26 |
Family
ID=90782378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322884444.3U Active CN220850427U (en) | 2023-10-26 | 2023-10-26 | Sealed bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220850427U (en) |
-
2023
- 2023-10-26 CN CN202322884444.3U patent/CN220850427U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |