Single-row angular contact ball bearing

Abstract

The utility model discloses a single-row angular contact ball bearing, which comprises an outer ring, an inner ring, a ball and a retainer, a dust cover is adsorbed on the outer ring, the dust cover covers a gap between the outer ring and the inner ring, a magnet is arranged in the dust cover, the magnet penetrates out of the dust cover to form a convex connecting part, a fixed groove is arranged on the outer ring, an iron sheet is arranged on the inner wall of the fixed groove, and the outer ring is fixedly connected with the inner ring. And the iron sheet and the convex connecting part are magnetically attracted. The dust cover is novel in structure, reliable in dust prevention and high in practicability, and the dust cover is easy to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and particularly relates to a single-row angular contact ball bearing. Background Art

[0002] Angular contact ball bearings have the advantages of high rotation accuracy and good high-speed performance, and can be used in medical machinery such as CT machines and laparoscopes.

[0003] The existing angular contact ball bearings have the following defects during use: external dust can easily enter the raceway from the gap between the outer ring and the inner ring, causing wear of the balls and raceway, affecting the normal operation of the bearings. The existing patent document (Announcement No.: CN220415996U) discloses "an angular contact ball bearing", which also has the above technical problems. Summary of the invention

[0004] The utility model aims to solve the above technical problems existing in the prior art and provides a single-row angular contact ball bearing with novel structure, reliable dustproof, simple dust cover disassembly and assembly, and strong practicality.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A single-row angular contact ball bearing, comprising: an outer ring, an inner ring, a ball and a cage, characterized in that: a dust cover is adsorbed on the outer ring, the dust cover covers the gap between the outer ring and the inner ring, a magnet is arranged inside the dust cover, the magnet passes through the dust cover to form a protruding connection part, a fixed groove is arranged on the outer ring, an iron sheet is arranged on the inner wall of the fixed groove, and the iron sheet and the protruding connection part are magnetically attracted. The angular contact ball bearing has a novel structure, reliable dustproof, simple dust cover disassembly and assembly, and strong practicality.

[0007] Furthermore, a sealing ring is provided at the chamfer of the inner hole of the inner ring, and the lip of the sealing ring contacts the rotating shaft to prevent external dust from entering the interior of the device from between the inner ring and the rotating shaft, thereby improving the sealing performance of the utility model and prolonging its service life.

[0008] Furthermore, the angle formed by the line connecting the contact points of the ball and the outer ring and the inner ring and the radial direction is α, and α is 15° to 25°. The utility model can bear radial load and axial load at the same time and can work at a higher speed. The larger the contact angle, the higher the axial load-bearing capacity.

[0009] Furthermore, a convex ring portion in contact with the outer ring is provided on the dust cover, and the magnet passes through the convex ring portion to form a convex connecting portion, so that a gap is left between the dust cover and the inner ring, and the dust cover does not contact the surface of the inner ring. The dust cover will not affect the normal rotation of the inner ring, and can also avoid rapid wear of the contact surface between the two due to the rotation of the inner ring.

[0010] Furthermore, the surfaces of the outer ring and the inner ring are both provided with a galvanized layer, which improves the corrosion resistance of the outer ring and the inner ring, making them less prone to corrosion and rust and having a long service life.

[0011] Furthermore, the surface of the ball is coated with a wear-resistant layer, which improves the wear resistance of the ball, makes it less prone to wear, and has a long service life.

[0012] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0013] 1. The dust cover is detachable, which is convenient for cleaning the raceway, ball bearings and adding lubricating oil. When installing, the protruding connection part of the magnet is embedded in the fixed groove and adsorbed with the iron sheet, so that the dust cover is limitedly installed on the outer ring, with a large contact area and reliable adsorption. The protruding connection part is not easy to freely escape from the fixed groove, and the dust cover will not shake radially. The installation stability is high, replacing the bolt fixing method, and the positioning and installation are convenient, the operation difficulty is low, and it is labor-saving and convenient; the convex ring part contacts the surface of the outer ring, and there is a gap between the dust cover and the inner ring. The dust cover does not contact the surface of the inner ring. The dust cover will not affect the normal rotation of the inner ring, and can also avoid the rapid wear of the contact surface between the two due to the rotation of the inner ring.

[0014] 2. A sealing ring is provided at the chamfer of the inner hole of the inner ring, and the lip of the sealing ring contacts the rotating shaft to prevent external dust from entering the interior of the equipment from between the inner ring and the rotating shaft, thereby improving the sealing performance of the utility model and prolonging its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the connection between the dust cover and the outer ring and the inner ring in the first embodiment;

[0018] Figure 3 This is a schematic diagram of the structure of the dust cover in Example 1;

[0019] Figure 4 This is a schematic diagram of the structure of the connection between the outer ring and the inner ring in the second embodiment;

[0020] Figure 5 This is a schematic diagram of the structure of the connection between the inner ring and the sealing ring in the second embodiment.

[0021] In the figure: 1-outer ring; 2-inner ring; 3-ball; 4-cage; 5-dust cover; 6-convex ring; 7-magnet; 8-convex connecting part; 9-fixing groove; 10-iron sheet; 11-sealing ring. DETAILED DESCRIPTION

[0022] like Figures 1 to 3 As shown, this is an embodiment of the present utility model

[0023] A single-row angular contact ball bearing comprises: an outer ring 1, an inner ring 2, a ball 3 and a cage 4. The outer wall of the inner ring 2 and the inner wall of the outer ring 1 are provided with raceways that cooperate with each other. The ball 3 is arranged in the raceway through the cage 4. The angle formed by the line connecting the contact points of the ball 3 and the outer ring 1 and the inner ring 2 and the radial direction is α, α is 15° to 25°, and α is preferably 25°. The utility model can bear radial load and axial load at the same time and can work at a higher speed. The larger the contact angle, the higher the axial load-bearing capacity.

[0024] The surfaces of the outer ring 1 and the inner ring 2 are both provided with a galvanized layer, which improves the corrosion resistance of the outer ring 1 and the inner ring 2, makes them less prone to corrosion and rust, and has a long service life. The surface of the ball 3 is coated with a wear-resistant layer, which can be made of a copper-zinc alloy layer, which improves the wear resistance of the ball 3, makes them less prone to wear, and has a long service life. The cage 4 can be made of polyamide 66 material, which improves its strength and elasticity, and helps to improve the performance and service life of the utility model.

[0025] The outer ring 1 is adsorbed with a dust cover 5, which covers the gap between the outer ring 1 and the inner ring 2 to prevent external dust from entering the gap between the outer ring 1 and the inner ring 2, thereby causing wear of the ball and the raceway, and is dustproof and reliable. A magnet 7 is arranged inside the dust cover 5, which improves the structural stability of the dust cover 5, maintains the original shape and is not easily deformed, and is reliable to use. The dust cover 5 is provided with a convex ring portion 6 in contact with the outer ring 1, and the thickness of the convex ring portion 6 is 2-5mm. The magnet 7 passes through the convex ring portion 6 to form a convex connection portion 8. The outer ring 1 is provided with a fixing groove 9, and an iron sheet 10 is arranged on the inner wall of the fixing groove 9. The iron sheet 10 is magnetically attracted to the convex connection portion 8.

[0026] The dust cover 5 is detachable, which is convenient for cleaning the raceway, the ball 3 and adding lubricating oil. During installation, the protruding connection part 8 of the magnet 7 is embedded in the fixed groove 9 and adsorbed with the iron sheet 10, so that the dust cover 5 is limitedly installed on the outer ring 1, with a large contact area and reliable adsorption. The protruding connection part 8 is not easy to freely escape from the fixed groove 9, the dust cover 5 will not shake radially, and the installation stability is high. It replaces the bolt fixing method, and the positioning and installation are convenient, the operation difficulty is low, and it is labor-saving and convenient; the convex ring part 6 contacts the surface of the outer ring 1, and a gap is left between the dust cover 5 and the inner ring 2. The dust cover 5 does not contact the surface of the inner ring 2, and the dust cover 5 will not affect the normal rotation of the inner ring 2, and can also avoid the rapid wear of the contact surface between the two due to the rotation of the inner ring 2.

[0027] like Figure 4 , Figure 5 As shown, this is the second embodiment of the utility model

[0028] In the technical solution based on the first embodiment, a sealing ring 11 is provided at the chamfer of the inner hole of the inner ring 2. The sealing ring 11 can be made of nitrile rubber. The lip of the sealing ring 11 contacts the rotating shaft to prevent external dust from entering the interior of the device from between the inner ring 2 and the rotating shaft, thereby improving the sealing performance of the utility model and extending the service life.

[0029] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A single-row angular contact ball bearing, comprising: Outer ring, inner ring, balls and cage, Features: A dust cover is adsorbed on the outer ring, the dust cover covers the gap between the outer ring and the inner ring, a magnet is arranged inside the dust cover, the magnet passes through the dust cover to form a protruding connection part, a fixing groove is arranged on the outer ring, an iron sheet is arranged on the inner wall of the fixing groove, and the iron sheet is magnetically attracted to the protruding connection part.

2. A single row angular contact ball bearing according to claim 1, characterized in that: A sealing ring is arranged at the chamfer of the inner hole of the inner ring, and the lip of the sealing ring contacts the rotating shaft.

3. The single-row angular contact ball bearing according to claim 1, characterized in that: The angle formed by the connecting line of the contact points between the ball and the outer ring and the inner ring and the radial direction is α, and α is 15° to 25°.

4. The single-row angular contact ball bearing according to claim 1, characterized in that: The dust cover is provided with a convex ring portion in contact with the outer ring, and the magnet passes through the convex ring portion to form the convex connecting portion, so that a gap is left between the dust cover and the inner ring.

5. The single row angular contact ball bearing according to claim 1, characterized in that: The surfaces of the outer ring and the inner ring are both provided with a zinc coating.

6. The single row angular contact ball bearing according to claim 1, characterized in that: The surface of the ball is coated with a wear-resistant layer.

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