Bearing ring

Abstract

The utility model discloses a bearing ring which comprises an inner ring, an outer ring and a ball, a sealing ring is embedded between the inner ring and the outer ring, an oil injection hole is arranged on the sealing ring, a sealing plug is clamped on the oil injection hole, the sealing plug comprises a column body and an end head, the end head is arranged on the column body, the diameter of the oil injection hole is gradually reduced from an inlet to an outlet, the column body is matched with the oil injection hole, and the ball is clamped on the oil injection hole. The section diameter of the end is larger than the largest diameter of the oil injection hole. The sealing ring is novel in structure, lubricating oil does not need to be added after the sealing ring is disassembled, oil adding is easy, labor is saved, convenience is achieved, damage to the sealing ring caused by repeated disassembly and assembly is avoided, and the cost of a die is not increased due to the fact that an oil injection hole is formed in the outer ring.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing rings, and in particular relates to a bearing ring. Background Art

[0002] Bearing rings are commonly used mechanical transmission components. Existing bearing rings use a sealing ring to seal the gap between the inner and outer rings, preventing the ingress of dust and other impurities. However, the sealing ring must be removed to add lubricant, which is inconvenient. Repeated disassembly and assembly can easily damage the sealing ring.

[0003] An existing patent document (publication number: CN221401388U) discloses "a bearing ring". Its technical solution is that a sealing cover is screwed to the outside of the top and bottom of the outer ring by bolts, and an oil filling hole is opened in the middle of the right part of the outer wall of the outer ring through the outer wall of the oil storage cavity. The mold cavity structure used to manufacture the outer ring is relatively complex, which increases the cost of the mold. Summary of the Invention

[0004] The purpose of the utility model is to solve the above-mentioned technical problems existing in the prior art and provide a bearing ring with a novel structure. It does not need to remove the sealing ring before adding lubricating oil, which is simple, labor-saving and convenient. It avoids repeated disassembly and assembly that may easily cause damage to the sealing ring, and does not need to open an oil filling hole on the outer ring to increase the cost of the mold.

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

[0006] A bearing ring comprises an inner ring, an outer ring, and a ball bearing. The ring is characterized by a sealing ring embedded between the inner and outer rings, an oil filling hole provided on the sealing ring, and a sealing plug secured to the oil filling hole. The sealing plug comprises a cylindrical body and a terminal head, the terminal head being mounted on the cylindrical body. The diameter of the oil filling hole decreases gradually from the inlet to the outlet, the cylindrical body being adapted to fit the oil filling hole, and the cross-sectional diameter of the terminal head being larger than the maximum diameter of the oil filling hole. This bearing ring has a novel structure and eliminates the need to remove the sealing ring before adding lubricating oil, making lubrication simple, labor-saving, and convenient. It avoids repeated disassembly and assembly that could damage the sealing ring and eliminates the need for an oil filling hole on the outer ring, which would increase mold costs.

[0007] Furthermore, a first inner groove is provided on the inner wall of the outer ring, with a first transition slope provided between the first inner groove and the inner wall of the outer ring. A first raised portion is provided on the outer wall of the sealing ring, corresponding to the first inner groove. During installation, the first raised portion is inserted into the first inner groove, securing the sealing ring between the outer and inner rings. This prevents the sealing ring from falling out freely, ensuring stable and reliable installation. Compared to a right-angle structure, the provision of the first transition slope reduces the deformation of the first raised portion during installation, allowing it to fit into the first inner groove, thus reducing the difficulty of sealing ring installation.

[0008] Furthermore, a second inner groove is provided on the outer wall of the inner ring, and a second transition slope is provided between the second inner groove and the outer wall of the inner ring. A second protrusion is provided on the inner wall of the sealing ring, corresponding to the second inner groove. During installation, the second protrusion is inserted into the second inner groove, thereby securing the sealing ring between the outer and inner rings, preventing it from falling out and ensuring stable and reliable installation. Compared to a right-angle structure, the provision of the second transition slope allows the second protrusion to fit into the second inner groove without requiring significant deformation during installation, thus reducing the difficulty of sealing ring installation.

[0009] Furthermore, the column and the end are formed into an integral structure, which is stable, has no seams, is not easy to crack and break, and has a long service life.

[0010] Furthermore, the inner ring's center hole has flared ends, which makes assembly between the inner ring and the shaft easier and reduces assembly difficulty.

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

[0012] Furthermore, the surface of the inner ring is coated with a wear-resistant layer, which improves the wear resistance of the inner ring, makes it less prone to wear, and prolongs its service life.

[0013] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0014] 1. Inject lubricating oil into the oil filling hole. The lubricating oil enters the annular gap between the outer ring and the inner ring, and lubricates the inner raceway of the outer ring, the balls, and the outer raceway of the inner ring. There is no need to remove the sealing ring before adding lubricating oil. Refueling is simple, labor-saving and convenient, avoiding repeated disassembly and assembly that may easily cause damage to the sealing ring. There is no need to open an oil filling hole on the outer ring to increase the cost of the mold.

[0015] 2. After the sealing plug is installed, it can ensure that the column is in close contact with the inner wall of the oil filling hole, is installed in place, has good sealing performance, is not easy to leak oil, and has large friction. The sealing plug is not easy to loosen freely and has high installation stability.

[0016] 3. When installing the sealing ring, the first protrusion is embedded in the first inner groove and the second protrusion is embedded in the second inner groove. The inside and outside are restricted at the same time, so that the sealing ring is limited between the outer ring and the inner ring, and it is not easy to fall off freely. The installation is stable and reliable. Compared with the right-angle structure, by setting the first transition bevel and the second transition bevel, when installing the sealing ring, the deformation degree of the first protrusion and the second protrusion does not need to be very large, and they can be embedded in the first inner groove and the second inner groove accordingly, thereby reducing the difficulty of installing the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a structural diagram of a bearing ring of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the inner ring in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the outer ring in the utility model;

[0021] Figure 4 It is a structural diagram of the joint between the sealing ring and the sealing plug in the utility model.

[0022] In the figure: 1-inner ring; 2-outer ring; 3-ball; 4-sealing ring; 5-first inner groove; 6-first transition slope; 7-first raised portion; 8-second inner groove; 9-second transition slope; 10-second raised portion; 11-oil filling hole; 12-sealing plug; 13-column; 14-end. DETAILED DESCRIPTION

[0023] like Figures 1 to 4 As shown, a bearing ring of the present invention comprises an inner ring 1, an outer ring 2 and balls 3. The balls 3 are located between the outer raceway of the inner ring 1 and the inner raceway of the outer ring 2. A sealing ring 4 is embedded between the inner ring 1 and the outer ring 2. The sealing ring 4 can be made of rubber to form an elastic seal. The sealing ring 4 is easy to assemble and disassemble and can be used immediately after assembly. The sealing ring 4 seals the annular gap between the outer ring 2 and the inner ring 1 to prevent dust and other external foreign matter from entering the annular gap, thereby keeping the balls 3 rotating in a clean environment, reducing wear and extending the service life.

[0024] A first inner groove 5 is provided on the inner wall of the outer ring 2, and a first transition inclined surface 6 is provided between the first inner groove 5 and the inner wall of the outer ring 2. A first protrusion 7 corresponding to the first inner groove 5 is provided on the outer wall of the sealing ring 4. A second inner groove 8 is provided on the outer wall of the inner ring 1, and a second transition inclined surface 9 is provided between the second inner groove 8 and the outer wall of the inner ring 1. A second protrusion 10 corresponding to the second inner groove 8 is provided on the inner wall of the sealing ring 4.

[0025] During installation, the first protrusion 7 is embedded in the first inner groove 5 and the second protrusion 10 is embedded in the second inner groove 8. The inside and outside are restricted at the same time, so that the sealing ring 4 is limited between the outer ring 2 and the inner ring 1. It is not easy to fall off freely, and the installation is stable and reliable. Compared with the right-angle structure, by setting the first transition bevel 6 and the second transition bevel 9, when installing the sealing ring 4, the deformation degree of the first protrusion 7 and the second protrusion 10 does not need to be very large, and they can be correspondingly embedded in the first inner groove 5 and the second inner groove 8, thereby reducing the difficulty of installing the sealing ring 4.

[0026] An oil filling hole 11 is provided on the sealing ring 4. Lubricating oil is injected into the oil filling hole 11 and enters the annular gap between the outer ring 2 and the inner ring 1 to lubricate the inner raceway of the outer ring 2, the balls 3 and the outer raceway of the inner ring 1. There is no need to remove the sealing ring 4 before adding lubricating oil. Refueling is simple, labor-saving and convenient, and repeated disassembly and assembly that may easily cause damage to the sealing ring 4 are avoided. There is no need to open the oil filling hole 11 on the outer ring 2 to increase the cost of the mold.

[0027] A sealing plug 12 is clamped on the oil filling hole 11. The sealing plug 12 includes a column 13 and an end head 14. The end head 14 is arranged on the column 13. The column 13 and the end head 14 are an integrally formed structure with a stable structure, no seams, not easy to crack and break, and a long service life.

[0028] The diameter of the oil filling hole 11 decreases step by step from the inlet to the outlet. The cross-sectional shape of the oil filling hole 11 is an isosceles trapezoid. The column 13 is adapted to the oil filling hole 11 . The cross-sectional diameter of the end 14 is larger than the maximum diameter of the oil filling hole 11 .

[0029] After the sealing plug 12 is installed, it can ensure that the column 13 is in close contact with the inner wall of the oil filling hole 11, is installed in place, has good sealing performance, is not easy to leak oil, and has high friction. The sealing plug 12 is not easy to loosen freely, and has high installation stability.

[0030] The surfaces of the outer ring 2 and the inner ring 1 are both coated with a wear-resistant layer. The wear-resistant layer can be made of silicon carbide, which improves the wear resistance of the inner ring 1 and the outer ring 2, making them less prone to wear and having a long service life.

[0031] The two ends of the center hole of the inner ring 1 are flared, which facilitates the assembly of the inner ring 1 and the rotating shaft and reduces the difficulty of assembly.

[0032] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. A bearing ring comprising: Inner ring, outer ring and balls, Its characteristics are: A sealing ring is embedded between the inner ring and the outer ring, and an oil filling hole is provided on the sealing ring. A sealing plug is clamped on the oil filling hole, and the sealing plug includes a column and an end head. The end head is provided on the column, and the diameter of the oil filling hole decreases step by step from the inlet to the outlet. The column is adapted to the oil filling hole, and the cross-sectional diameter of the end head is larger than the maximum diameter of the oil filling hole.

2. A bearing ring according to claim 1, characterized in that: A first inner groove is provided on the inner wall of the outer ring, a first transition slope is provided between the first inner groove and the inner wall of the outer ring, and a first protrusion corresponding to the first inner groove is provided on the outer wall of the sealing ring.

3. The bearing ring according to claim 1, characterized in that: A second inner groove is provided on the outer wall of the inner ring, a second transition slope is provided between the second inner groove and the outer wall of the inner ring, and a second protrusion corresponding to the second inner groove is provided on the inner wall of the sealing ring.

4. The bearing ring according to claim 1, characterized in that: The column and the end head are an integrally formed structure.

5. The bearing ring according to claim 1, characterized in that: Both ends of the central hole of the inner ring are in a flared structure.

6. The bearing ring according to claim 1, characterized in that: The surface of the outer ring is coated with a wear-resistant layer.

7. The bearing ring according to claim 1, characterized in that: The surface of the inner ring is coated with a wear-resistant layer.

Images