Bearing seal
By designing a multi-layer lip structure in the bearing seal, the stability of the sealing effect and the reduction of friction torque under complex working conditions are achieved, solving the performance impact problem caused by the large sealing friction torque in the existing technology.
Patent Information
- Application Number
- CN202520408727.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-03-10
AI Technical Summary
To ensure a good seal, existing technologies typically employ multi-layer contact seals, which results in high frictional torque and negatively impacts bearing performance.
Design a bearing seal, including a sealing ring and a retaining ring, with multiple layers of lips on the sealing ring and retaining ring. Through clearance fit and elastic contact, multiple lines of defense are formed to reduce frictional torque while maintaining sealing effect under complex working conditions.
While ensuring sealing performance, reduce frictional torque, prevent contaminant intrusion and grease leakage, ensure normal operation of bearings under complex working conditions, and extend the life of sealing components.
Smart Images
Figure CN223578562U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bearing field especially a bearing sealing element. BACKGROUND
[0002] Bearing plays the role of support and rotation in mechanical transmission, and its friction torque directly affects the energy consumption of equipment. For sealed bearings, the friction torque between the sealing ring and the ring has a significant impact on its performance. With the popularity of new energy vehicles, the requirement for the friction torque of bearings is also increasing. However, in order to ensure the sealing effect, the existing technology usually sets multiple contact seals to ensure the sealing effect, which leads to a large friction torque and affects the performance of the product. SUMMARY
[0003] In view of the deficiencies of the prior art, the utility model provides a bearing sealing element which reduces the friction torque under the premise of ensuring sealing.
[0004] To achieve the above purpose, the utility model provides a bearing sealing element, which comprises a sealing ring and a retaining ring. The sealing ring comprises a connecting part and an extension part. The sealing ring is clamped on the outer ring through the connecting part. The extension part extends towards the inner ring. The retaining ring comprises a sleeve part and a shielding part. The retaining ring is sleeved on the inner ring through the sleeve part. The connecting part is provided with a first lip part. The first lip part and the shielding part are gap fitted. The extension part is provided with a second lip part, a third lip part and a fourth lip part in sequence. The second lip part is elastically abutted on the shielding part. The third lip part and the sleeve part are gap fitted. The fourth lip part is elastically abutted on the sleeve part.
[0005] The advantages of the above technical scheme are: by setting the connecting part and the extension part on the sealing ring, the sleeve part and the shielding part on the retaining ring, the first lip part on the connecting part of the sealing ring, the second lip part, the third lip part and the fourth lip part on the extension part, and by forming multiple lines of defense through the first lip part, the second lip part, the third lip part and the fourth lip part under the premise of shielding by the shielding part of the retaining ring, the bearing can maintain relatively stable sealing performance even under certain vibration or impact when facing various complex working conditions such as high-speed rotation, vibration and impact, effectively preventing the invasion of pollutants and the leakage of lubricating grease, thereby ensuring the normal operation of the bearing under complex working conditions and ensuring the sealing effect. Moreover, the first lip part and the third lip part are respectively gap fitted with the shielding part and the sleeve part, which can reduce the friction torque of the sealing on the basis of having a certain sealing effect. In combination with the second lip part and the fourth lip part which are respectively elastically interference abutted with the shielding part and the sleeve part, the sealing effect can be ensured.
[0006] The utility model discloses further can set up: the first lip portion is towards the direction of bearing's axis and is obliquely extended and is arranged, the shielding portion of the baffle ring is provided with the bending part, the bending part is towards the direction of the roller and is extended and is arranged, the first lip portion extends to the upper place of the bending part.
[0007] Through further setting, the bending part arranged on the shielding portion of the baffle ring extends towards the direction of the roller, and an additional protective barrier is formed, which can make the first lip portion and the bending part act together to ensure the sealing effect, and the oblique arrangement of the first lip portion and the extension design of the bending part make the sealing structure have certain flexibility and adaptability, so that the cooperation of the two can better operate normally under complex working conditions.
[0008] The utility model discloses further can set up: the second lip portion is towards the direction of being away from bearing axis and is obliquely extended and is arranged, and the second lip portion is elastically pressed in the lower place of the shielding portion corresponding bending part.
[0009] Through further setting, the second lip portion is obliquely extended towards the direction of being away from the bearing axis, and the oblique direction is complementary to the first lip portion, so that when external impurities, dust or liquid try to enter the bearing, the second lip portion can block and guide them, making it difficult for them to directly enter the bearing interior, and the second lip portion is elastically pressed in the lower place of the shielding portion corresponding bending part, so that the second lip portion and the shielding portion form close fitting, further enhancing the sealing effect and reducing the possibility of leakage.
[0010] The utility model discloses further can set up: the third lip portion is towards the direction of the connecting point of sleeve joint part and shielding portion and is obliquely extended and is arranged, and the clearance fit between the third lip portion and sleeve joint part.
[0011] Through further setting, the third lip portion is obliquely extended towards the direction of the connecting point of the sleeve joint part and the shielding portion, which can optimize the sealing path, change the movement direction of the pollutants trying to enter the bearing interior, increase the difficulty of entering, and thus improve the reliability of the sealing, and since the clearance fit is adopted between the third lip portion and the sleeve joint part, this design can help prevent particles from accumulating at the sealing part, even if a small amount of particles enter the gap between the third lip portion and the sleeve joint part, since there is a certain space, the particles will not be tightly pressed on the sealing surface, which can avoid the problem of accelerated wear or reduced sealing performance caused by particle accumulation, and prolong the service life of the sealing part.
[0012] The utility model discloses further can set up: the fourth lip portion is towards the direction of the roller and is obliquely extended and is elastically pressed on the sleeve joint part.
[0013] By further setting, the fourth lip part is elastically abutted on the sleeve joint part, which can effectively prevent the lubricating grease from flowing out from the part, and when the bearing is running, even if affected by centrifugal force and other factors, the elastic fourth lip part can limit the lubricating grease around the roller, ensure that the roller is always in good lubrication state, and improve the working efficiency and reliability of the bearing. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the embodiment of the utility model;
[0015] Figure 2 It is the embodiment of the utility model Figure 1 It is an enlarged view of part a in the embodiment of the utility model;
[0016] Figure 3 It is the embodiment of the utility model Figure 1 It is an enlarged view of part b in the embodiment of the utility model;
[0017] Figure 4 It is a use state schematic view of the embodiment of the utility model;
[0018] Among them: sealing ring 1, connecting part 11, extension part 12, first lip part 13, second lip part 14, third lip part 15, fourth lip part 16, baffle ring 2, sleeve joint part 21, shielding part 22, bending part 23, outer ring 3, inner ring 4. PREFERRED EMBODIMENT
[0019] The embodiment of the utility model of a new kind of bearing sealing piece as Figures 1-4 As shown in the figure: including sealing ring 1 and baffle ring 2, the sealing ring 1 includes connecting part 11 and extension part 12, the sealing ring 1 is clamped on the outer ring 3 through the connecting part 11, the extension part 12 extends towards the direction of the inner ring 4, the baffle ring 2 includes sleeve joint part 21 and shielding part 22, the baffle ring 2 is sleeved on the inner ring 4 through the sleeve joint part 21, the connecting part 11 is provided with first lip part 13, the first lip part 13 and the shielding part 22 are gap fitted, the extension part 12 is provided with second lip part 14, third lip part 15 and fourth lip part 16 in sequence, the second lip part 13 is elastically abutted on the shielding part 22, the third lip part 15 and the sleeve joint part 21 are gap fitted, and the fourth lip part 16 is elastically abutted on the sleeve joint part 21.
[0020] The first lip part 13 extends obliquely towards the direction of the axis of the bearing, the shielding part of the baffle ring 2 is provided with bending part 23, the bending part 23 extends towards the direction of the roller, and the first lip part 13 extends to the upper side of the bending part 23.
[0021] The second lip 14 is arranged to extend obliquely towards the direction away from the bearing axis, and the second lip 14 is elastically abutted against the lower part of the corresponding bending part 23 of the shielding part 22.
[0022] The third lip 15 is arranged to extend obliquely towards the connecting point between the sleeve part 21 and the shielding part 22, and the third lip 15 and the sleeve part 21 are gap-fitted.
[0023] The fourth lip 16 is arranged to extend obliquely towards the roller and elastically abut against the sleeve part 21.
[0024] The above examples are only one of the preferred specific examples of the present application, and the common changes and replacements made by the person skilled in the art within the technical scheme of the present application are all included in the protection scope of the present application.
Claims
1. A bearing seal, comprising a sealing ring and a retaining ring, characterized in that: The sealing ring includes a connecting portion and an extension portion. The sealing ring is fastened to the outer ring via the connecting portion. The extension portion extends towards the inner ring. The retaining ring includes a sleeve portion and a blocking portion. The retaining ring is fitted onto the inner ring via the sleeve portion. A first lip is provided at the connecting portion. The first lip and the blocking portion are fitted with a clearance fit. A second lip, a third lip, and a fourth lip are successively provided on the extension portion. The second lip elastically abuts against the blocking portion. The third lip and the sleeve portion are fitted with a clearance fit. The fourth lip elastically abuts against the sleeve portion.
2. The bearing seal according to claim 1, characterized in that: The first lip extends obliquely toward the axis of the bearing, and the retaining ring has a bent portion on its blocking portion. The bent portion extends toward the roller, and the first lip extends above the bent portion.
3. The bearing seal according to claim 2, characterized in that: The second lip extends obliquely away from the bearing axis and elastically abuts against the lower part of the corresponding bend of the shielding part.
4. The bearing seal according to claim 1, 2, or 3, characterized in that: The third lip extends obliquely toward the connection point of the sleeve and the shield, and there is a gap fit between the third lip and the sleeve.
5. The bearing seal according to claim 1, 2, or 3, characterized in that: The fourth lip extends at an angle toward the roller and elastically abuts against the sleeve portion.