CN209959709U

CN209959709U - Sealed bearing

Info

Publication number: CN209959709U
Application number: CN201920663235.7U
Authority: CN
Inventors: 杨海东
Original assignee: Henan Shenhuan Rubber And Plastic Co Ltd
Current assignee: Henan Shenhuan Rubber And Plastic Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-17
Anticipated expiration: 2029-05-10

Abstract

The utility model relates to a sealed bearing. The utility model discloses a sealed bearing, including inner circle, outer lane, sealing washer, steel ball and holder, the radial surface middle part of inner circle is provided with the inner circle slot, and the radial internal surface middle part of outer lane is provided with the outer lane slot, and the inner circle slot forms the rolling raceway that supplies the steel ball with the outer lane slot jointly, two and set up respectively in the left and right sides of raceway about the sealing washer has, and the axial inboard of sealing washer is provided with the oil scraper ring groove that prevents the lubricating oil in the bearing and reveal. The utility model discloses a sealed bearing makes the lubricating oil that throws away in the raceway of bearing collect the oil scraper inslot portion through the inboard oil retaining ring groove that sets up of axial at the sealing washer, and then avoids lubricating oil to reveal from the clearance between sealing washer and the bearing, influences the sealed effect of bearing, improves the high-speed performance of bearing, avoids lubricating oil to reveal the polluted environment.

Description

Sealed bearing

Technical Field

The utility model relates to a sealed bearing.

Background

The bearing is a part commonly used by automobiles in the prior art, lubricating oil is generally injected into the bearing in order to ensure the high-speed performance of the bearing, and the sealing performance of the bearing in the prior art is generally poor, so that the problem of environmental pollution caused by lubricating oil leakage can occur. Moreover, the leakage of the lubricating oil causes poor lubrication effect of the bearing, and further affects the high-speed performance of the bearing.

For example, the chinese patent application with application publication No. CN108488224A discloses a deep groove ball bearing with seal rings on both sides, which includes an inner ring, an outer ring, seal rings, a steel ball and a retainer, wherein the seal rings are arranged on the left and right sides of the retainer, the radial outer end of the seal ring is clamped with the outer ring, and the radial inner end of the seal ring is in interference fit with the inner ring of the bearing. However, the radial inner end of the sealing ring arranged in the deep groove ball bearing with the sealing rings on both sides can prevent the lubricating oil from leaking only by interference fit with the inner ring of the bearing, and the function of sealing the bearing is achieved. In the long-time high-speed rotation process of bearing, the cooperation mode between the radial inner end of sealing washer and the inner circle of bearing can become clearance fit by interference fit, and lubricating oil reveals away from the clearance between the radial inner end of sealing washer and the inner circle of bearing easily, leads to the sealed effect of bearing relatively poor, influences the high-speed performance and the polluted environment of bearing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealed bearing to solve among the prior art the poor bearing high-speed performance that leads to of bearing seal effect poor and the technical problem of polluted environment is revealed to lubricating oil.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a sealed bearing comprises an inner ring, an outer ring, a sealing ring, a steel ball and a retainer, wherein an inner ring groove is formed in the middle of the radial outer surface of the inner ring, an outer ring groove is formed in the middle of the radial inner surface of the outer ring, a raceway for the steel ball to roll is formed by the inner ring groove and the outer ring groove together, the left sealing ring and the right sealing ring are arranged on the left side and the right side of the raceway respectively, and an oil retainer groove for preventing lubricating oil in the bearing from leaking is arranged on the axial.

The utility model discloses a sealed bearing makes the lubricating oil that throws away in the raceway of bearing collect the oil scraper inslot portion through the inboard oil retaining ring groove that sets up of axial at the sealing washer, and then avoids lubricating oil to reveal from the clearance between sealing washer and the bearing, influences the sealed effect of bearing, improves the high-speed performance of bearing, avoids lubricating oil to reveal the polluted environment.

Further, for the better with the sealing washer assembly on the bearing, the axial inboard of sealing washer is provided with interior seal lip, and interior seal lip is located the radial inner of sealing washer, the interior seal lip department that corresponds the sealing washer on the inner circle is provided with interior seal lip joint complex mounting groove, and the radial outer end department that corresponds the sealing washer on the inner circle is provided with the draw-in groove with the radial outer end joint of sealing washer.

Furthermore, in order to avoid external impurities from entering the bearing, an outer sealing lip is further arranged on the sealing ring corresponding to the axial outer side of the inner sealing lip, and the outer sealing lip is in interference fit with the inner ring.

Furthermore, in order to facilitate the lubricating oil to flow out of the raceway so as to quickly dissipate heat of the bearing, a lubricating oil flow guide channel is formed on the radial outer surface of the inner ring between the inner ring groove and the left and right sealing rings, and the radial size of the lubricating oil flow guide channel is gradually increased from inside to outside in the axial direction.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the sealed bearing of the present invention.

In the figure: 1. an outer ring; 11. an outer ring groove; 12. a card slot; 2. an inner ring; 21. an inner ring groove; 3. a steel ball; 4. a holder; 5. a seal ring; 6. a lubricating oil flow guide passage; 7. an inner sealing lip; 8. mounting grooves; 9. an outer sealing lip; 10. and an oil baffle ring groove.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

The embodiment 1 of the sealed bearing of the present invention is shown in fig. 1, and includes an inner ring 2, an outer ring 1, a seal ring 5, a steel ball 3 and a retainer 4. The middle part of the radial outer surface of the inner ring 2 is provided with an inner ring groove 21, the middle part of the radial inner surface of the outer ring 1 is provided with an outer ring groove 11, and the inner ring groove 21 and the outer ring groove 11 jointly form a raceway for rolling the steel ball 3.

The left side and the right side of the roller path are respectively provided with a sealing ring 5, the inner side of the axial direction of the sealing ring 5 is provided with an inner sealing lip 7, the inner sealing lip 7 is positioned at the inner end of the radial direction of the sealing ring 5, a mounting groove 8 matched with the inner sealing lip 7 in a clamping mode is arranged at the position, corresponding to the inner sealing lip 7 of the sealing ring 5, on the inner ring 2, and a clamping groove 12 clamped with the outer end of the radial direction of the sealing ring 5 is arranged at the position, corresponding to the. The sealing ring 5 is clamped and matched with the bearing through the inner sealing lip 7 and the radial outer end of the sealing ring 5. An outer sealing lip 9 is further arranged on the sealing ring 5 corresponding to the axial outer side of the inner sealing lip 7, and the outer sealing lip 9 is in interference fit with the inner ring 2 to prevent foreign matters outside the bearing from entering the bearing. An oil baffle ring groove 10 for preventing lubricating oil in the bearing from leaking is further arranged on the axial inner side of the sealing ring 5, the inner sealing lip 7 and the radial outer end of the sealing ring 5 are protruded to form two groove walls of the oil baffle ring groove 10, and the axial inner side surface of the sealing ring 5 forms the groove bottom of the oil baffle ring groove 10.

In order to guide the lubricating oil to rapidly flow out from the raceway so as to accelerate the heat dissipation efficiency of the bearing, the inner ring 2 is further provided with a lubricating oil flow guide channel 6, the lubricating oil flow guide channel 6 is formed by a part, located between the inner ring groove 21 and the left and right sealing rings 5, of the radial outer surface of the inner ring 2, and the radial size of the lubricating oil flow guide channel 6 is gradually increased from inside to outside in the axial direction.

The utility model discloses a sealed bearing is when using, and the lubricating oil that throws away in the raceway of bearing is under lubricating oil water conservancy diversion passageway 6's guide, and quick in being collected oil scraper ring groove 10, and then avoids lubricating oil to reveal from the clearance between sealing washer 5 and the bearing, influences the sealed effect of bearing, and then improves the high speed performance of bearing, avoids lubricating oil to reveal the polluted environment.

In other embodiments, the lubricating oil guide channel is not arranged, and the lubricating oil in the bearing is completely thrown out by the rotation of the steel ball and then collected in the oil retainer groove.

In other embodiments, the sealing ring may not be provided with an outer sealing lip, and the sealing ring completely depends on the inner sealing lip of the sealing ring to prevent external impurities from entering the bearing. In other embodiments, the seal ring may not have an inner seal lip, and the radially inner end of the seal ring is in interference fit with the bearing inner ring, and the oil deflector groove is dug on the axially inner surface of the seal ring.

Claims

1. The utility model provides a sealed bearing, includes inner circle, outer lane, sealing washer, steel ball and holder, and the radial surface middle part of inner circle is provided with the inner circle slot, and the radial internal surface middle part of outer lane is provided with the outer lane slot, and the inner circle slot constitutes the rolling raceway that supplies the steel ball with the outer lane slot jointly, its characterized in that: the sealing rings are arranged on the left side and the right side of the roller path respectively, and oil retainer grooves for preventing lubricating oil in the bearing from leaking are arranged on the inner sides of the sealing rings in the axial direction.

2. The sealed bearing of claim 1, wherein: the axial inboard of sealing washer is provided with interior seal lip, and interior seal lip is located the radial inner of sealing washer, the interior seal lip department that corresponds the sealing washer on the interior circle is provided with interior seal lip joint complex mounting groove, and the radial outer end department that corresponds the sealing washer on the interior circle is provided with the draw-in groove with the radial outer end joint of sealing washer.

3. The sealed bearing of claim 2, wherein: and the axial outer side of the sealing ring corresponding to the inner sealing lip is also provided with an outer sealing lip, and the outer sealing lip is in interference fit with the inner ring.

4. A sealed bearing according to any of claims 1 to 3, wherein: the part of the radial outer surface of the inner ring, which is positioned between the groove of the inner ring and the left and right sealing rings, forms a lubricating oil flow guide channel, and the radial size of the lubricating oil flow guide channel is gradually increased from inside to outside in the axial direction.