CN220816289U - Clutch bearing sealing structure - Google Patents

Abstract

The utility model discloses a clutch bearing sealing structure, including a bearing outer ring, a bearing inner ring, a retaining frame, and a steel ball. A seal is arranged in pairs between the bearing outer ring and the bearing inner ring. The seal includes a frame and rubber wrapped on the frame. The rubber is respectively provided with a first sealing lip and a second sealing lip on one side facing the bearing inner ring. A gap is provided between the first sealing lip and the second sealing lip. The bearing inner ring is provided with an annular protrusion that fits the gap. The outer side of the seal is provided with a first side cover that abuts against and presses the seal. The first side cover and the second side cover are installed on the side of the seal to press and fix the seal. The first side cover and the second side cover can adjust the size of the pressing force to avoid one side being too tight or the other side being too loose, resulting in the pressure tending to the looser side to loosen the seal.

Description

Clutch bearing seal structure

Technical Field

The utility model relates to a clutch bearing sealing structure.

Background technique

Silicone oil clutch is a clutch technology that uses silicone oil as a medium and utilizes the shear viscosity of silicone oil to transmit torque. It has the characteristics of high efficiency, energy saving and environmental protection. As the national environmental protection requirements become more and more stringent, major OEMs are increasingly choosing silicone oil clutch fans as a way to cool the engine. Cars equipped with silicone oil clutch fans have significant effects in saving energy, reducing noise, improving engine cold start performance, extending the life of the engine and fan, and improving the power characteristics of the whole vehicle. However, due to the special structure of the silicone oil clutch, the bearing needs to be in direct contact with the pressurized silicone oil, which places some special requirements on the silicone oil clutch bearing, especially not allowing the silicone oil to leak. Once the silicone oil leaks, it will cause the clutch to fail prematurely and reduce the cooling effect, and then cause engine damage. The ordinary sealing structure commonly used in the silicone oil clutch bearings used by domestic bearing manufacturers cannot effectively seal the pressurized silicone oil, and silicone oil leakage often occurs, which cannot meet the use requirements.

Utility Model Content

In view of the deficiencies in the prior art, the purpose of the utility model is to provide a clutch bearing sealing structure, which can reliably fix both sides of the seal to prevent the seal from loosening due to the generated pressure and causing leakage of silicone oil.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clutch bearing sealing structure, comprising a bearing outer ring, a bearing inner ring, a retaining frame, and a steel ball, wherein a seal is arranged in pairs between the bearing outer ring and the bearing inner ring, wherein the seal comprises a frame and rubber wrapped on the frame, wherein a first sealing lip and a second sealing lip are respectively arranged on the side of the rubber facing the bearing inner ring, wherein a gap is arranged between the first sealing lip and the second sealing lip, an annular protrusion fitting with the gap is arranged on the bearing inner ring, and a first side cover is arranged on the outer side of the seal for abutting and pressing against the seal.

As a further improvement of the utility model, the first side cover is threadedly connected to the side of the bearing inner ring, the first side cover is provided with a first flange abutting against the second sealing lip, and the second sealing lip is provided with a guide surface at one end facing the first flange.

As a further improvement of the utility model, the rubber is interference-embedded on the bearing outer ring on one side facing the bearing outer ring, a second side cover is threadedly connected to the side surface of the bearing outer ring, and a second flange is provided on the second side cover for pressing the rubber.

As a further improvement of the utility model, the annular protrusion and the bearing inner ring form a vertical surface, the second sealing lip is in contact with the vertical surface, and a rubber ring is further provided on the second sealing lip.

Beneficial effects of the utility model: The first side cover and the second side cover are installed on the side of the seal to press and fix it. The first side cover and the second side cover can adjust the size of the pressing force to avoid one side being too tight or the other side being too loose, resulting in pressure tending to the looser side and loosening the seal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of an embodiment of the utility model;

FIG. 2 is a partial enlarged schematic diagram of point A in FIG. 1 .

Figure numbers: 1. bearing outer ring; 2. bearing inner ring; 3. frame; 4. rubber; 5. first sealing lip; 6. second sealing lip; 7. annular protrusion; 8. first side cover; 9. first flange; 10. second side cover; 11. second flange; 12. rubber ring.

Detailed ways

The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

As shown in Figures 1-2, a clutch bearing sealing structure comprises a bearing outer ring 1, a bearing inner ring 2, a retaining frame, and a steel ball. A seal is arranged in pairs between the bearing outer ring 1 and the bearing inner ring 2. The seal comprises a skeleton 3 and a rubber 4 wrapped on the skeleton 3. The rubber 4 is respectively provided with a first sealing lip 5 and a second sealing lip 6 on the side facing the bearing inner ring 2. A gap is provided between the first sealing lip 5 and the second sealing lip 6. The bearing inner ring 2 is provided with an annular protrusion 7 that fits the gap. The surface of the annular protrusion 7 that contacts the first sealing lip 5 is an inclined surface, so as to increase the contact area between the first sealing lip 5 and the annular protrusion 7. The outer side of the seal is provided with a first side cover 8 that abuts and presses against it. The first side cover 8 is threadedly connected to the side of the bearing inner ring 2. The first side cover 8 is provided with a first flange 9 that abuts against the second sealing lip 6. The second sealing lip 6 is provided with a guide surface at one end facing the first flange 9, and the guide surface is provided to facilitate the installation and pressing of the first flange 9. The rubber 4 is interference-embedded on the bearing outer ring 1 on the side facing the bearing outer ring 1. The side of the bearing outer ring 1 is threadedly connected with a second side cover 10, and the second side cover 10 is provided with a second flange 11 for pressing the rubber 4. The first side cover 8 and the second side cover 10 are fixedly connected by threaded connection. The seal is pressed and the pressing force is adjusted by rotating the first side cover 8 and the second side cover 10, which can avoid that one side is too pressed and the other side is loosened due to pressure. The annular protrusion 7 forms a vertical plane with the bearing inner ring 2, and the second sealing lip 6 is in contact with the vertical plane. A rubber ring 12 is also provided on the second sealing lip 6. The rubber ring 12 is provided to facilitate further pressing of the second sealing lip 6, and also facilitates the installation and pressing of the first side cover 8.

The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (4)

1. The utility model provides a clutch bearing seal structure, includes bearing outer lane, bearing inner circle, holder, steel ball, be equipped with the sealing member in pairs between bearing outer lane and the bearing inner circle, the sealing member includes skeleton, parcel rubber on the skeleton, its characterized in that, one side of rubber orientation bearing inner circle is equipped with first seal lip and second seal lip respectively, be equipped with the interval between first seal lip and the second seal lip, be equipped with the annular arch of laminating with this interval on the bearing inner circle, one side that the sealing member is outside is equipped with the first side cap that compresses tightly its butt.

2. The clutch bearing seal structure according to claim 1, wherein the first side cover is screwed to a side surface of the bearing inner ring, a first flange abutting against a second seal lip is provided on the first side cover, and a guide surface is provided at an end of the second seal lip facing the first flange.

3. The clutch bearing sealing structure according to claim 1, wherein one side of the rubber facing the bearing outer ring is embedded in the bearing outer ring in an interference manner, a second side cover is connected to the side surface of the bearing outer ring in a threaded manner, and a second flange for compacting the rubber is arranged on the second side cover.

4. The clutch bearing seal structure according to claim 1, wherein the annular protrusion and the bearing inner ring form a vertical plane, the second seal lip is attached to the vertical plane, and a rubber ring is further provided on the second seal lip.