Bearing with sealing ring

Abstract

The bearing with the sealing ring comprises a bearing inner ring, a bearing outer ring, a retainer, a plurality of ball bodies and a sealing ring body, a first sealing lip is arranged on the inner edge of the sealing ring body, a first sealing groove is formed in the outer side wall of the bearing inner ring, and the first sealing lip is clamped in the first sealing groove. A second sealing lip is arranged at the outer edge of the sealing ring body, a second sealing groove is formed in the inner side wall of the bearing outer ring, the second sealing lip is clamped in the second sealing groove, a height difference exists between the first sealing groove and the second sealing groove, and a supporting framework is embedded between the first sealing lip and the second sealing lip. The bearing with the sealing ring has better deformation resistance, the reliability of the bearing is improved, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and particularly relates to a bearing with a sealing ring. Background Art

[0002] A bearing generally consists of an outer ring, an inner ring, a cage, and a number of rollers slidably connected within the cage. Through the relative rolling of the outer ring and the inner ring with the rollers, in the prior art, a sealing ring body is usually installed on the bearing to prevent the intrusion of external dust, water, and gas into the bearing. For example, the utility model patent with the publication number CN202468719U discloses an axially sealed bearing provided with a sealing ring body. It has an inner ring provided within the outer ring of the bearing, a steel ball groove provided in the middle of the inner and outer rings of the bearing, steel balls provided within the steel ball groove, and the steel balls are assembled in the steel ball groove by a steel ball holder. Sealing grooves are provided at both outer ends of the steel ball groove, and a sealing ring body is installed within the sealing grooves. The sealing is achieved through the tight fit between the sealing ring body and the outer surface of the outer diameter of the bearing inner ring.

[0003] However, during the long-term rotation of the existing bearing, due to the large internal pressure caused by the temperature rise of the bearing, the sealing ring body is prone to deformation under the extrusion of external forces, resulting in oil leakage of the bearing and reducing the service life of the bearing. Summary of the Utility Model

[0004] The purpose of the present utility model is to design a bearing with a sealing ring to solve the above-mentioned technical deficiencies. It has good anti-deformation performance, improves the reliability of the bearing, and extends the service life of the bearing.

[0005] To solve the above-mentioned technical problems, the technical solution of the present utility model is: a bearing with a sealing ring, including a bearing inner ring, a bearing outer ring, a cage, and a number of ball bodies. The bearing outer ring is sleeved outside the bearing inner ring, the cage is arranged between the bearing outer ring and the bearing inner ring, and each of the ball bodies is arranged in a circular array and rotatably installed on the side of the cage. It further includes a sealing ring body. A first sealing lip is provided at the inner edge of the sealing ring body, a first sealing groove is opened on the outer side wall of the bearing inner ring, and the first sealing lip is clamped within the first sealing groove. A second sealing lip is provided at the outer edge of the sealing ring body, a second sealing groove is opened on the inner side wall of the bearing outer ring, and the second sealing lip is clamped within the second sealing groove. There is a height difference between the first sealing groove and the second sealing groove, and the height position of the first sealing groove is higher than that of the second sealing groove. A support skeleton is embedded between the first sealing lip and the second sealing lip, and first inclined surfaces and second inclined surfaces that are relatively inclined are respectively formed on the opposite sides of the first sealing lip and the second sealing lip. The first inclined surface, the support skeleton, and the second inclined surface cooperate to form a V-shaped groove.

[0006] Preferably, the material of the support skeleton is metal, and the cross-section of the support skeleton is planar.

[0007] Preferably, the material of the seal ring body is rubber.

[0008] Preferably, a sealing portion is formed on the outer edge of the seal ring body, the sealing portion is attached to the inner side wall of the outer ring of the bearing, and the second sealing lip protrudes outwardly on the sealing portion.

[0009] Preferably, a U-shaped deformation groove is formed on the second inclined surface.

[0010] Preferably, a guiding surface inclined towards the second sealing groove is formed on the outer wall of the second sealing lip.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] A bearing with a seal ring provided by the present utility model provides additional support in the axial and radial directions of the seal ring body through the first sealing lip and the second sealing lip at different height positions, thereby strengthening the connection of the seal ring body between the inner ring and the outer ring of the bearing and achieving a better sealing effect. The first inclined surface, the support skeleton, and the second inclined surface cooperate to form a V-shaped groove, which can effectively disperse the force applied thereto when subjected to an external force, has good anti-deformation performance, improves the reliability of the bearing, and prolongs the service life of the bearing. Description of the Drawings

[0013] Figure 1 is a schematic structural view of the bearing in the embodiment;

[0014] Figure 2 is a sectional view of the bearing in the embodiment;

[0015] Figure 3 is Figure 2 an enlarged view of area A in

[0016] In the figure: 1, inner ring of the bearing; 101, first sealing groove; 2, outer ring of the bearing; 201, second sealing groove; 3, cage; 4, ball body; 5, seal ring body; 501, first sealing lip; 502, second sealing lip; 503, support skeleton; 504, first inclined surface; 505, second inclined surface; 506, sealing portion; 507, deformation groove; 508, guiding surface. Detailed Embodiments

[0017] The present utility model will be further described below through embodiments in conjunction with the drawings.

[0018] Refer to Figure 1 、 Figure 2 、 Figure 3, a bearing with a sealing ring, including an inner bearing ring 1, an outer bearing ring 2, a cage 3, a number of ball bodies 4, and a sealing ring body 5. The outer bearing ring 2 is sleeved on the outside of the inner bearing ring 1. The cage 3 is arranged between the outer bearing ring 2 and the inner bearing ring 1. Each ball body 4 is arranged in an annular array and is rollingly installed on the side edge of the cage 3.

[0019] The material of the sealing ring body 5 is rubber. A first sealing lip 501 is provided at the inner edge of the sealing ring body 5. A sealing portion 506 is formed at the outer edge of the sealing ring body 5. The sealing portion 506 is of an annular structure, and the annular structure extends along the edge of the sealing ring body 5. A second sealing lip 502 protrudes outward from the outer side wall of the sealing portion 506. A guiding surface 508 that is inclined towards the second sealing groove 201 is formed on the outer wall of the second sealing lip 502. Opposite inclined first inclined surfaces 504 and second inclined surfaces 505 are respectively formed on the opposite sides of the first sealing lip 501 and the second sealing lip 502. A U-shaped deformation groove 507 is formed on the second inclined surface 505.

[0020] A first sealing groove 101 is provided on the outer side wall of the inner bearing ring 1, and a second sealing groove 201 is provided on the inner side wall of the outer bearing ring 2. There is a height difference between the first sealing groove 101 and the second sealing groove 201. The height position of the first sealing groove 101 is higher than the height position of the second sealing groove 201.

[0021] When the sealing ring body 5 is sleeved into the annular gap between the inner bearing ring 1 and the outer bearing ring 2, the first sealing lip 501 is clamped in the first sealing groove 101, and the first sealing lip 501 abuts against the inner wall of the first sealing groove 101. Under the guidance of the guiding surface 508, the second sealing lip 502 deforms inward through the deformation groove 507 so as to enter the annular gap between the inner bearing ring 1 and the outer bearing ring 2. Until the second sealing lip 502 corresponds to the second sealing groove 201, the sealing portion 506 recovers its deformation so that the second sealing lip 502 is clamped in the second sealing groove 201, and the sealing portion 506 fits against the inner side wall of the outer bearing ring 2. Through the first sealing lip 501 and the second sealing lip 502 at different height positions, additional support is provided in the axial and radial directions of the sealing ring body 5, thereby strengthening the connection of the sealing ring body 5 between the inner bearing ring 1 and the outer bearing ring 2 and achieving a better sealing effect.

[0022] A support skeleton 503 is embedded between the first sealing lip 501 and the second sealing lip 502. The material of the support skeleton 503 is metal, and the cross-section of the support skeleton 503 is planar. Through the setting of the support skeleton, the sealing ring body 5 has good anti-deformation performance, and the first inclined surface 504, the support skeleton 503, and the second inclined surface 505 cooperate to form a V-shaped groove, which can effectively disperse the force applied to it when subjected to an external force, has good anti-deformation performance, improves the reliability of the bearing, and extends the service life of the bearing.

[0023] Certainly, the above are only typical examples of the present utility model. In addition, the present utility model may also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. A bearing with a sealing ring, characterized in that: The invention comprises a bearing inner ring (1), a bearing outer ring (2), a retaining frame (3), and a plurality of ball bodies (4), wherein the bearing outer ring (2) is sleeved on the outer side of the bearing inner ring (1), the retaining frame (3) is arranged between the bearing outer ring (2) and the bearing inner ring (1), and each of the ball bodies (4) is arranged in an annular array and is rollingly mounted on the side of the retaining frame (3), and further comprises a sealing ring body (5), wherein a first sealing lip (501) is arranged at the inner edge of the sealing ring body (5), a first sealing groove (101) is opened on the outer side wall of the bearing inner ring (1), the first sealing lip (501) is clamped in the first sealing groove (101), a second sealing lip (502) is arranged at the outer edge of the sealing ring body (5), and the bearing outer ring (2) is provided with a plurality of ball bodies (4). A second sealing groove (201) is formed on the inner side wall, and the second sealing lip (502) is clamped in the second sealing groove (201). There is a height difference between the first sealing groove (101) and the second sealing groove (201), and the height position of the first sealing groove (101) is higher than the height position of the second sealing groove (201). A supporting frame (503) is embedded between the first sealing lip (501) and the second sealing lip (502), and a first inclined surface (504) and a second inclined surface (505) arranged relatively inclined are formed on opposite sides of the first sealing lip (501) and the second sealing lip (502), respectively, and the first inclined surface (504), the supporting frame (503) and the second inclined surface (505) cooperate to form a V-shaped groove.

2. A bearing with a sealing ring according to claim 1, characterized in that: The support frame (503) is made of metal, and the cross section of the support frame (503) is planar.

3. A bearing with a sealing ring according to claim 1, characterized in that: The sealing ring body (5) is made of rubber.

4. A bearing with a sealing ring according to claim 1, characterized in that: A sealing portion (506) is formed on the outer edge of the sealing ring body (5), the sealing portion (506) is in contact with the inner wall of the bearing outer ring (2), and the second sealing lip (502) is formed protrudingly on the sealing portion (506).

5. A bearing with a sealing ring according to claim 4, characterized in that: A U-shaped deformation groove (507) is provided on the second inclined surface (505).

6. A bearing with a sealing ring according to claim 1, characterized in that: The outer wall of the second sealing lip (502) is formed with a guide surface (508) which is arranged obliquely toward the second sealing groove (201).

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