Dustproof angular contact bearing

Abstract

The utility model discloses a dustproof angular contact bearing which comprises a bearing outer ring, a bearing inner ring and a dustproof cover, a retainer is arranged between the bearing outer ring and the bearing inner ring, a plurality of balls are annularly arrayed on the retainer at equal intervals, two opposite side surfaces of the bearing outer ring are provided with first annular mounting grooves, and the first annular mounting grooves are provided with second annular mounting grooves. Bosses are arranged on the two opposite side faces of the bearing inner ring, the dustproof cover is detachably mounted in the first annular mounting groove through a dismounting and mounting assembly, when the dustproof cover is mounted in the first annular mounting groove, the bosses are sleeved with the inner ring of the dustproof cover, and the dismounting and mounting assembly comprises an elastic clamping head and an annular limiting groove formed in the bearing outer ring; the lower end of the elastic clamping head is fixedly connected to the edge of one side of the dustproof cover, the movable end of the elastic clamping head can be clamped into the annular limiting groove, and the dustproof cover and the bearing outer ring can be rapidly disassembled and assembled through the disassembling and assembling assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and in particular relates to a dustproof angular contact bearing. Background Art

[0002] Angular contact bearings mainly bear large unidirectional axial loads. The larger the contact angle, the higher the load bearing capacity.

[0003] The patent with announcement number CN210769863U discloses a dustproof bearing, including a bearing inner ring, a bearing outer ring, balls and a bearing retaining ring. The bearing outer ring is arranged on the outside of the bearing inner ring, the bearing retaining ring is arranged between the bearing inner ring and the bearing outer ring, the balls are arranged on the bearing retaining ring, and also includes a dustproof ring and a sealing ring. An annular sealing groove is provided on the bearing inner ring, the outer edge of the dustproof ring is connected to the bearing outer ring, the inner edge of the dustproof ring is connected to the sealing ring, and the end of the sealing ring facing away from the dustproof ring is in the annular sealing groove and rotatably cooperates with the annular sealing groove.

[0004] The dustproof bearing uses bolts to connect the dustproof ring and the outer ring of the bearing. When the grease inside the bearing needs to be replenished, a wrench needs to be used to remove multiple bolts one by one. This process is not only time-consuming, but also prone to thread slippage when installing the bolts. Utility Model Content

[0005] The utility model aims to provide a dustproof angular contact bearing to solve the technical defect that the existing dustproof ring and the bearing outer ring are inconvenient to disassemble.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A dustproof angular contact bearing comprises a bearing outer ring, a bearing inner ring and a dust cover, a retaining frame is arranged between the bearing outer ring and the bearing inner ring, a plurality of balls are arranged on the retaining frame in an annular equidistant array, first annular mounting grooves are provided on two opposite side surfaces of the bearing outer ring, bosses are provided on two opposite side surfaces of the bearing inner ring, the dust cover can be detachably installed in the first annular mounting groove through a disassembly assembly component, and when the dust cover is installed in the first annular mounting groove, the inner ring of the dust cover is sleeved on the boss.

[0008] The disassembly and assembly component includes an elastic clamp and an annular limiting groove opened on the outer ring of the bearing. The lower end of the elastic clamp is fixedly connected to the edge of one side of the dust cover, and the movable end of the elastic clamp can be clamped into the annular limiting groove.

[0009] As a further solution of the utility model, a paddle is formed on the upper end of the elastic clamp, and one side of the paddle is in contact with the inner wall of the outer ring of the bearing.

[0010] As a further solution of the utility model, a groove is provided on one side of the plectrum.

[0011] As a further solution of the utility model, the elastic clamp is arranged in a V shape, and the upper end of the elastic clamp is against the top of the annular limiting groove.

[0012] As a further solution of the utility model, annular sealing grooves are provided on two opposite side surfaces of the inner ring of the bearing, a dust shield ring is fixedly connected to one side of the dust cover, the dust shield ring is inserted into the interior of the annular sealing groove, there is a clearance fit between the annular sealing groove and the dust shield ring, and there is a clearance fit between the boss and the inner ring of the dust cover.

[0013] As a further solution of the utility model, second annular mounting grooves are provided on two opposite side surfaces of the bearing outer ring, a sealing ring is provided inside the second annular mounting groove, and one side of the dust cover is pressed on the sealing ring.

[0014] As a preferred solution of the utility model, no less than three elastic clamps are arranged equidistantly along the circumference of the dust cover.

[0015] Compared with the prior art, the dustproof angular contact bearing provided by the utility model has the following beneficial effects:

[0016] 1. The dust cover and the outer ring of the bearing can be quickly disassembled and assembled through the disassembly and assembly components provided;

[0017] 2. The dust cover, dust shield ring, annular sealing groove and sealing ring can effectively prevent external dust from entering the angular contact bearing, effectively extending the service life of the angular contact bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. Obviously, the drawings described below are only examples of the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure when a dust cover is installed in an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure when the dust cover is not installed in the embodiment of the utility model;

[0022] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0023] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of part B in FIG.

[0024] Figure 6 for Figure 3 Schematic diagram of the enlarged structure of part C;

[0025] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of part D in FIG.

[0026] Reference numerals:

[0027] 1. Bearing outer ring; 101. First annular mounting groove; 102. Second annular mounting groove; 103. Annular limiting groove; 2. Bearing inner ring; 201. Boss; 202. Annular sealing groove; 3. Dust cover; 301. Dust shield ring; 302. Elastic clamp; 3021. Pick; 3022. Groove; 4. Ball; 5. Sealing ring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments of the present invention.

[0030] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0031] See attached Figure 1-7As shown, an embodiment of the utility model is a dustproof angular contact bearing, comprising a bearing outer ring 1, a bearing inner ring 2 and a dust cover 3, a retaining frame is arranged between the bearing outer ring 1 and the bearing inner ring 2, a plurality of balls 4 are arranged on the retaining frame in an annular equidistant array, first annular mounting grooves 101 are provided on two opposite side surfaces of the bearing outer ring 1, bosses 201 are provided on two opposite side surfaces of the bearing inner ring 2, the dust cover 3 can be detachably installed in the first annular mounting groove 101 through a disassembly and assembly component, and when the dust cover 3 is installed in the first annular mounting groove 101, the inner ring of the dust cover 3 is sleeved on the boss 201.

[0032] In the embodiment of the utility model, the disassembly and assembly component includes an elastic clamp 302 and an annular limiting groove 103 provided on the bearing outer ring 1. The lower end of the elastic clamp 302 is fixedly connected to the edge of one side of the dust cover 3, and the movable end of the elastic clamp 302 can be clamped into the annular limiting groove 103. In order to ensure that the dust cover 3 can be stably installed in the first annular installation groove 101, no less than three elastic clamps 302 are arranged equidistantly along the circumference of the dust cover 3. In order to facilitate the removal of the elastic clamp 302 from the annular limiting groove 103, a paddle 3021 is formed on the upper end of the elastic clamp 302, and one side of the paddle 3021 is in contact with the inner wall of the bearing outer ring 1, and a groove 3022 is provided on one side of the paddle 3021.

[0033] When installing the dust cover 3, press the dust cover 3 forcefully into the first annular installation groove 101. At this time, the elastic clamp 302 produces corresponding elastic deformation due to the pressure, and the elastic clamp 302 is clamped into the annular limit groove 103. At this time, release the dust cover 3 to complete the installation of the dust cover 3. When removing the dust cover 3, use a tool to insert it into the groove 3022, and then push the paddle 3021 toward the center of the bearing outer ring 1, thereby driving the elastic clamp 302 to move, and the elastic clamp 302 is pulled out of the annular limit groove 103. At this time, the dust cover 3 can be removed.

[0034] In the embodiment of the utility model, the elastic clamp 302 is arranged in a V shape, and the upper end of the elastic clamp 302 is against the top of the annular limiting groove 103. Through this arrangement, when the dust cover 3 is installed, the elasticity of the V-shaped elastic clamp 302 can be used to tightly press the dust cover 3 into the first annular installation groove 101.

[0035] In order to improve the dustproof effect of the angular contact bearing, annular sealing grooves 202 are provided on the opposite sides of the bearing inner ring 2, and a dust ring 301 is fixedly connected to one side of the dust cover 3. The dust ring 301 is inserted into the annular sealing groove 202. There is a clearance fit between the annular sealing groove 202 and the dust ring 301, and there is a clearance fit between the boss 201 and the inner ring of the dust cover 3. A second annular mounting groove 102 is provided on the opposite sides of the bearing outer ring 1, and a sealing ring 5 is arranged inside the second annular mounting groove 102. One side of the dust cover 3 is pressed on the sealing ring 5. By setting the dust cover 3 in conjunction with the dust ring 301, the annular sealing groove 202 and the sealing ring 5, external dust can be effectively prevented from entering the interior of the angular contact bearing, thereby effectively extending the service life of the angular contact bearing.

[0036] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A dustproof angular contact bearing, comprising a bearing outer ring (1), a bearing inner ring (2) and a dust cover (3), wherein a retaining frame is arranged between the bearing outer ring (1) and the bearing inner ring (2), and a plurality of balls (4) are arranged in an annular equidistant array on the retaining frame, characterized in that: Two opposite side surfaces of the bearing outer ring (1) are provided with first annular mounting grooves (101), and two opposite side surfaces of the bearing inner ring (2) are provided with bosses (201). The dust cover (3) can be detachably mounted in the first annular mounting groove (101) through a disassembly assembly component. When the dust cover (3) is mounted in the first annular mounting groove (101), the inner ring of the dust cover (3) is sleeved on the bosses (201); The disassembly and assembly component comprises an elastic clamp (302) and an annular limiting groove (103) provided on the bearing outer ring (1); the lower end of the elastic clamp (302) is fixedly connected to a side edge of the dust cover (3); and the movable end of the elastic clamp (302) can be clamped into the annular limiting groove (103).

2. A dustproof angular contact bearing according to claim 1, characterized in that: A paddle (3021) is formed on the upper end of the elastic clamp (302), and one side of the paddle (3021) is in contact with the inner wall of the bearing outer ring (1).

3. A dustproof angular contact bearing according to claim 2, characterized in that: A groove (3022) is formed on one side of the plectrum (3021).

4. A dustproof angular contact bearing according to claim 3, characterized in that: The elastic clamp (302) is arranged in a V-shape, and the upper end of the elastic clamp (302) abuts against the top of the annular limiting groove (103).

5. A dustproof angular contact bearing according to claim 4, characterized in that: An annular sealing groove (202) is provided on two opposite side surfaces of the bearing inner ring (2); a dust shield ring (301) is fixedly connected to one side of the dust cover (3); the dust shield ring (301) is inserted into the annular sealing groove (202); a clearance fit is formed between the annular sealing groove (202) and the dust shield ring (301); and a clearance fit is formed between the boss (201) and the inner ring of the dust cover (3).

6. A dustproof angular contact bearing according to claim 5, characterized in that: Two opposite side surfaces of the bearing outer ring (1) are provided with second annular mounting grooves (102), a sealing ring (5) is arranged inside the second annular mounting groove (102), and one side of the dust cover (3) is pressed on the sealing ring (5).

7. The dustproof angular contact bearing according to claim 2, characterized in that: No less than three of the elastic clamps (302) are arranged equidistantly along the circumference of the dust cover (3).

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