Bearing sealing ring with air holes
By setting staggered radial and axial grooves on the outer lip of the bearing seal ring, misaligned communication between the internal and external air of the bearing is achieved, solving the problem of air pressure imbalance caused by temperature changes and ensuring stable operation of the bearing.
Patent Information
- Application Number
- CN202520731011.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-04-17
AI Technical Summary
When a bearing operates at high speed, the imbalance of internal and external air pressure caused by temperature changes can lead to problems such as jamming or increased torque.
The outer lip of the bearing seal ring is provided with radial and axial grooves that are staggered from each other and connected by a channel to achieve staggered communication of air inside and outside the bearing and maintain air pressure balance.
This effectively avoids bearing jamming or increased torque caused by temperature changes, ensuring stable bearing operation.
Smart Images
Figure CN223806480U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bearing technical field especially relates to a bearing sealing ring with air hole. BACKGROUND
[0002] The sealing ring of bearing plays an important role to the performance and life of bearing, on one hand, the sealing ring can keep the lubricant from losing in use, always keeps the bearing in lubrication state, on the other hand, the sealing ring can prevent dust or harmful gas from entering the inside of bearing, causes damage to bearing. When bearing high-speed operation, the temperature of inside of bearing rises, the inside air thermal expansion will prop open inner lip and run out, when the temperature of inside of bearing reduces, the inside air contraction of bearing can make the pressure difference between inside and outside of bearing, thereby the phenomenon of bearing jam or torque heavy appears. SUMMARY
[0003] The utility model discloses a bearing sealing ring with air hole, which can solve the technical problems mentioned in the background art.
[0004] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows: a bearing sealing ring with air hole, comprising a sealing ring main body and a framework arranged in the sealing ring main body, the outer lip of the sealing ring main body is installed at the outer sealing groove of the bearing outer ring, the inner lip of the sealing ring main body is installed at the inner sealing groove of the bearing inner ring, the outer lip is placed behind the outer sealing groove, the inner side of the outer circular surface of the outer lip and the outer side of the inner side end surface are left with a passage between the outer sealing groove, at least one radial groove is arranged on the inner side end surface of the outer lip and communicates the internal space of the bearing with the passage, at least one axial groove is arranged on the outer circular surface of the outer lip and communicates the external space of the bearing with the passage, and the radial groove and the axial groove are staggered and arranged and connected through the passage.
[0005] As a preferred, the inner side of the inner side end surface of the outer lip is inclined to extend to the outer circular end of the framework, and the inclined edge is arranged on the outer circular end of the framework.
[0006] As a preferred, the outer circular end of the framework has an inclined folding edge matched with the inclined edge.
[0007] As a preferred, the end of the inclined folding edge has a vertical folding edge extending into the outer lip.
[0008] As a preferred, the radial groove is two and is evenly distributed on the inner side end surface of the outer lip, and the included angle between the axial groove and the radial groove is 90°.
[0009] As a preferred, the outer side end surface of the outer lip is concavely provided with a rebound groove.
[0010] As preferred, the outer circular surface of the outer lip meets the inner end surface through a conical surface.
[0011] As preferred, the conical surface is circularly arc transitioned with the inner end surface of the outer lip.
[0012] Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses through setting up the radial groove and the axial groove that are mutually staggered and are connected through the passage on the outer lip, and the air inside and outside the bearing communicates through the radial groove, the axial groove and the passage, when the temperature in the bearing interior changes, can make the air pressure inside and outside the bearing keep relative balance, avoids the phenomenon that bearing jam or torque becomes heavy when the air in the bearing interior contracts. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the front view of the utility model.
[0014] Figure 2 It is the I enlarged schematic view of Figure 1 .
[0015] Figure 3 It is the K enlarged schematic view of Figure 1 .
[0016] Figure 4 It is the cross-sectional view of the axial groove of the utility model.
[0017] Figure 5 It is the cross-sectional view of the radial groove of the utility model.
[0018] Figure 6 It is the cross-sectional view of the utility model installed on the bearing. DETAILED DESCRIPTION
[0019] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model.
[0020] As Figures 1-6As shown in the utility model provides a kind of bearing sealing ring with air hole, including sealing ring main body 1, and the skeleton 2 being located in the sealing ring main body 1, the outer lip 4 of the sealing ring main body 1 is installed at the outer sealing groove of bearing outer ring 3, the inner lip 5 of the sealing ring main body 1 is installed at the inner sealing groove of bearing inner ring 6, the outer lip 4 is placed after the outer sealing groove, the inner side of the outer surface of the outer lip 1 and the outer side of inner side end surface are left with passageway 7 between the outer sealing groove, at least one radial groove 8 of the inner side end surface of the outer lip 4 is provided, and the passageway 7 of bearing internal space is communicated, at least one axial groove 9 of the outer surface of the outer lip 4 is provided, and the passageway 7 of bearing external space is communicated, and the radial groove 8 and axial groove 9 are staggered and connected by the passageway 7.The utility model is by being provided with the radial groove 8 and axial groove 9 that are staggered and connected by passageway 7 on outer lip 4, and air in the inside and outside of bearing is communicated by radial groove 8, axial groove 9 and passageway 7, when the temperature in the inside of bearing changes, the air pressure in the inside and outside of bearing can be kept relative balance, avoid the phenomenon that bearing is stuck or torque is heavy when air in the inside of bearing shrinks.
[0021] As preferred, the inner side of the inner side end surface of the outer lip 4 is inclined to the axial direction and extends to the inclined edge 10 covering the outer end of the skeleton 2, the inclined edge 10 has a guiding and buffering effect, which can prevent the accumulation of lubricating grease, and further prevent the lubricating grease from entering the passageway 7 from the radial groove 8 and running out from the axial groove 9.
[0022] As preferred, the outer end of the skeleton 2 has an inclined folding edge 11 matched with the inclined edge 10, and the end of the inclined folding edge 11 has a vertical folding edge 12 extending into the outer lip 4, and the skeleton 2 has good rigidity.
[0023] As preferred, the radial groove 8 is two and is evenly distributed on the inner side end surface of the outer lip 4, and the axial groove 9 is one and has an angle of 90° with the radial groove 8, which is reasonable in design.
[0024] As preferred, the outer side end surface of the outer lip 4 is concave and has a rebound groove 13, so that the outer lip 4 is tightly installed with the outer sealing groove of the bearing outer ring 3.
[0025] As preferred, the outer surface of the outer lip 4 is connected with the inner side end surface through a conical surface 14, the conical surface 14 is arc transitioned with the inner side end surface of the outer lip 4, so that the passageway 7 formed between the outer lip 4 and the outer sealing groove of the bearing outer ring 3 can well connect the radial groove 8 and the axial groove 9 with each other.
[0026] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein.
Claims
1. A bearing seal ring with air holes, comprising a seal ring body and a skeleton arranged in the seal ring body, an outer lip of the seal ring body is arranged at an outer sealing groove of a bearing outer ring, and an inner lip of the seal ring body is arranged at an inner sealing groove of a bearing inner ring, characterized in that: The outer lip is arranged behind the outer sealing groove, and a passage is left between the inner side of the outer circumferential surface of the outer lip and the outer side of the inner side end surface of the outer lip and the outer sealing groove.
2. The vented bearing seal of claim 1, wherein: The inner side of the inner side end surface of the outer lip extends obliquely to the axial direction and has an oblique covering edge wrapped around the outer circumferential end of the framework.
3. The vented bearing seal of claim 2, wherein: The outer circumferential end of the framework has an oblique folding edge matched with the oblique covering edge.
4. The vented bearing seal of claim 3, wherein: The end of the oblique folding edge has a vertical folding edge extending into the outer lip.
5. The vented bearing seal of any of claims 1-4, wherein: The radial slots are two and are arranged on the inner side end surface of the outer lip, and the included angle between the axial slot and the radial slots is 90°.
6. The vented bearing seal of any of claims 1-4, wherein: The outer side end surface of the outer lip is concavely provided with a rebound groove.
7. The vented bearing seal of any of claims 1-4, wherein: The outer circumferential surface of the outer lip and the inner side end surface are connected through a conical surface.
8. The vented bearing seal of claim 7, wherein: The conical surface and the inner side end surface of the outer lip are connected through a circular arc.