Side seal type rolling bearing

Abstract

The application discloses a side plug type rolling bearing, which comprises an outer ring, an inner ring, a plurality of rolling bodies, a side plug, a first blocking part and a second blocking part. The outer ring and the inner ring are coaxial, a chamber is formed between the outer ring and the inner ring, the outer ring is provided with a channel in radial direction to communicate with the chamber, the outer ring forms a side wall to surround the channel, each rolling body enters the chamber through the channel, the side plug is arranged in the channel in axial direction, the first blocking part is arranged in the channel to tightly adhere the side plug and the side wall, the first blocking part is formed by solidifying liquid material with high fluidity and low solidification shrinkage, thereby preventing lubricating material from leaking out through the channel, the second blocking part is arranged in the channel to tightly adhere the first blocking part and the side wall, and the second blocking part supports the first blocking part.

Description

Technical Field

[0001] This invention relates to a rolling bearing; more particularly to a side-plug type rolling bearing. Background Technology

[0002] like Figure 1 As shown, the side-plug type rolling bearing includes an outer ring 11, an inner ring 12, several rolling elements 13, and a side plug 14. The outer ring 11 surrounds the annular outer side of the inner ring 12, and an annular chamber 15 is formed between the outer ring 11 and the inner ring 12. The rolling elements 13 are arranged in annular order in the chamber 15. The chamber 15 is provided with a lubricating substance (not shown in the figure). The rolling elements 13 maintain the outer ring 11 and the inner ring 12 coaxially, so that the outer ring 11 and the inner ring 12 rotate relative to each other on the same axis. The lubricating substance provides lubrication to the adjacent rolling elements 13, the outer ring 11, and the inner ring 12. When the outer ring 11 and the inner ring 12 rotate relative to each other, the lubricating substance reduces the relative friction between the outer ring 11, the inner ring 12, and the rolling elements 13.

[0003] An outer ring 11 has a radially extending channel 16 that connects to a chamber 15. Each rolling element 13 enters the chamber 15 sequentially through the channel 16 from the radially outer side of the outer ring 11. A side plug 14 is inserted into the channel 16 from the radially outer side of the outer ring 11, preventing the rolling elements 13 from leaving the chamber 15 through the channel 16. The side plug 14 is fitted with a leak-proof ring 17 made of elastic material. The leak-proof ring 17 seals the narrow gap between the inner wall of the channel 16 and the side plug 14, preventing lubricating substances from leaking outward through the channel 16.

[0004] In practical application experience, the following problems and shortcomings of side-plug type rolling bearings have been found: In order for the check ring 17 to effectively prevent the lubricating material from leaking through the channel 16, the check ring 17 is elastically deformed by the pressure of the side plug 14. The check ring 17 is in an elastically deformed state for a long time and is in contact with the lubricating material, which can easily cause material changes in the check ring 17 and lose its function of preventing the lubricating material from leaking out. Summary of the Invention

[0005] The main objective of this invention is to provide a side-plug type rolling bearing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A side-plug type rolling bearing, comprising:

[0008] An outer ring forms a channel along the radial direction. One end of the channel extends to the outer ring's annular outer sidewall, which encircles the channel.

[0009] An inner ring and an outer ring surround the outer side of the inner ring. The inner and outer rings are coaxial, and a circular chamber is formed between the outer and inner rings. A channel connects the chamber, and the interior of the chamber is filled with lubricating material.

[0010] Several rolling elements are arranged in a ring in the chamber to maintain the outer ring and inner ring coaxial. Each rolling element cooperates with the outer ring and inner ring, and the outer ring and inner ring rotate relative to each other on the same axis.

[0011] A side plug is axially disposed in the channel. The side plug has a first end and a second end. The first end and the second end are opposite to each other along the axial direction of the side plug. The first end is adjacent to the chamber, and the second end is adjacent to the annular outer side of the outer ring. A first annular surface is formed on the radial circumference of the side plug. The first annular surface is located between the first end and the second end. The first annular surface and the sidewall are closely adjacent to each other along the radial direction of the side plug.

[0012] A first sealing part is provided in the channel. The first sealing part is made of a liquid adhesive material with high fluidity and low curing shrinkage. The first sealing part is tightly bonded to the second end and the side wall, thereby preventing the lubricating substance from leaking out through the channel.

[0013] A second sealing part is provided in the channel. The second sealing part is made of a gel-like polymer material that has been hardened. The second sealing part is tightly bonded to the first sealing part and the side wall. The first sealing part is located between the second end and the second sealing part. The second sealing part provides support for the first sealing part.

[0014] The second end sinks into the channel, which allows the channel to accommodate the first sealing part and the second sealing part. The first sealing part has an annular second annular surface that surrounds the radial periphery of the first sealing part and is tightly bonded to the sidewall. The second sealing part has an annular third annular surface that surrounds the radial periphery of the second sealing part and is tightly bonded to the sidewall.

[0015] The main effect and advantage of this invention is that it can utilize the high fluidity and low curing shrinkage of liquid materials to form a first sealing part, preventing lubricating substances from leaking radially outward through the channel to the outer ring. The second sealing part provides support for the first sealing part. Attached Figure Description

[0016] Figure 1 This is a partial axial sectional view of a commonly known side-pinch type rolling bearing.

[0017] Figure 2 This is a perspective view of Embodiment 1 of the present invention.

[0018] Figure 3 This is an axial sectional view of Embodiment 1 of the present invention.

[0019] Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0020] Figure 5 This is a front view of the side plug of Embodiment 2 of the present invention.

[0021] Figure 6 This is a partial axial sectional view of Embodiment 2 of the present invention.

[0022] Figure 7 This is a partial radial sectional view of Embodiment 3 of the present invention.

[0023] Figure 8 This is a perspective view of the side plug of Embodiment 4 of the present invention.

[0024] Figure 9 This is a partial radial sectional view of Embodiment 5 of the present invention.

[0025] Figure 10 This is an axial sectional view of Embodiment Six of the present invention. Detailed Implementation

[0026] like Figures 2 to 10 The illustration shows an embodiment of the side-plug type rolling bearing of the present invention. However, these embodiments are for illustrative purposes only and are not limited to this structure in the patent application.

[0027] like Figures 2 to 4 As shown, in one embodiment of the side-plug type rolling bearing, there is an outer ring 20, an inner ring 30, several rolling elements 40, a side plug 50, a first sealing part 60, and a second sealing part 70. The outer ring 20 forms a channel 22 in the radial direction, one end of which extends to the annular outer side of the outer ring 20. The outer ring 20 forms an annular sidewall 24 that surrounds the channel 22. The outer ring 20 surrounds the annular outer side of the inner ring 30. The inner ring 30 and the outer ring 20 are coaxial. An annular chamber 80 is formed between the outer ring 20 and the inner ring 30. The channel 22 communicates with the chamber 80. The interior of the chamber 80 is provided with a lubricating substance (not shown in the figure).

[0028] Each rolling element 40 is arranged in a ring in the chamber 80, maintaining the outer ring 20 and inner ring 30 coaxial. The rolling elements 40 are balls, but can be replaced with rollers or needle rollers. The radial dimensions of each rolling element 40 match the outer ring 20 and inner ring 30, which rotate coaxially relative to each other. Since the rolling elements 40 are balls, the sidewall 24 is an annular surface. When the rolling elements 40 are replaced with rollers or needle rollers, the sidewall 24 is replaced with an annular surface of the corresponding shape to match the axial cross-sectional shape of the rolling elements 40, allowing the rolling elements 40 to pass through the channel 22.

[0029] The side plug 50 is axially disposed in the channel 22. The side plug 50 has a first end 51 and a second end 52. The first end 51 and the second end 52 are opposite each other along the axial direction of the side plug 50. The first end 51 is adjacent to the chamber 80, and the second end 52 is adjacent to the annular outer side of the outer ring 20. A first annular surface 53 is formed on the radial circumference of the side plug 50. The first annular surface 53 is located between the first end 51 and the second end 52. The first annular surface 53 and the side wall 24 are closely adjacent to each other along the radial direction of the side plug 50.

[0030] The first sealing part 60 is provided in the channel 22. The first sealing part 60 is formed by curing a liquid material with high fluidity and low curing shrinkage. The preferred choice of the liquid material is cyanoacrylate, which is commonly known as a fast-drying adhesive. The first sealing part 60 is tightly bonded to the second end 52 and the side wall 24 to prevent the lubricating substance from leaking radially outward through the channel 22 towards the outer ring 20.

[0031] The second sealing part 70 is disposed in the channel 22. The second sealing part 70 is made of a gel-like polymer material that has been hardened. The preferred choice of the polymer material is epoxy resin. The second sealing part 70 is tightly bonded to the first sealing part 60 and the side wall 24. The first sealing part 60 is located between the second end 52 and the second sealing part 70. The second sealing part 70 provides support for the first sealing part 60.

[0032] The second end 52 sinks into the channel 22, which accommodates the first sealing part 60 and the second sealing part 70. The first sealing part 60 has an annular second annular surface 62, which surrounds the radial periphery of the first sealing part 60 and is tightly bonded to the side wall 24. The second sealing part 70 has an annular third annular surface 72, which surrounds the radial periphery of the second sealing part 70 and is tightly bonded to the side wall 24.

[0033] Based on the above-described structural composition and technical features, each rolling element 40 is sequentially fed into the chamber 80 through the channel 22. After the side plug 50 is installed in the channel 22, liquid material is injected into the channel 22, and the liquid material contacts the second end 52 and the side wall 24. After the liquid material dries and solidifies to form the first sealing part 60, a gel-like polymer material is filled into the channel 22, and the gel-like polymer material contacts the first sealing part 60 and the side wall 24. After the gel-like polymer material hardens to form the second sealing part 70, the assembly of Example 1 is completed.

[0034] Taking advantage of the high fluidity and low curing shrinkage of liquid materials, the liquid material can fully contact the second end 52 and the sidewall 24. After curing to form the first sealing part 60, the first sealing part 60 can prevent lubricating material from leaking radially outward through the channel 22 to the outer ring 20, and is not prone to leakage of lubricating material due to material quality changes. Taking advantage of the rapid curing characteristics of liquid materials, the time required for setting the side plug 50 and the first sealing part 60 is reduced. After the first sealing part 60 is formed, a gel-like polymer material is used to form the second sealing part 70, which can provide support for the first sealing part 70.

[0035] like Figure 5 and Figure 6As shown, the main difference between Embodiment 2 and Embodiment 1 is that the side plug 50 forms a conical surface 54, which is adjacent to the second end 52 and the first annular surface 53. The outer diameter of the conical surface 54 increases from the second end 52 to the first annular surface 53. The first sealing part 60 is tightly bonded to the conical surface 54. Under the premise that the axial length of the side plug 50 remains unchanged, the formation of the conical surface 54 increases the axial length of the side wall 24 located between the radially outer side of the side plug 50 and the outer ring 20, providing more space for the first sealing part 60 and the second sealing part 70. The first sealing part 60 can further penetrate into the channel 22 towards the chamber 80. The first sealing part 60 fully fills the part of the channel 22 located between the conical surface 54 and the side wall 24, improving the effectiveness of preventing lubricating substances from leaking outward.

[0036] like Figure 7 As shown, the main difference between Embodiment 3 and Embodiment 1 is that the periphery of the second end 52 is partially recessed towards the chamber 80, making the second end 52 form an arc shape. With the partial recess of the second end 52, a portion of the second annular surface 62 can be further extended towards the chamber 80, increasing the area of ​​the second annular surface 62 in contact with the adhesive sidewall 24 and improving the effectiveness of preventing lubricating substances from leaking outward.

[0037] like Figure 8 As shown, the main difference between Embodiment 4 and Embodiment 1 is that the radial circumferential side of the second end 52 is recessed towards the chamber 80, so that the second end 52 forms a spherical arc shape. With the partial recess of the second end 52, the second annular surface 62 can be further extended towards the chamber 80, and the area of ​​the second annular surface 62 in contact with the adhesive sidewall 24 is increased, thereby improving the effectiveness of preventing lubricating substances from leaking outward.

[0038] like Figure 9 As shown, the main difference between Embodiment 5 and Embodiment 3 is that Embodiment 5 further includes a bolt 90, wherein the bolt 90 is bolted to the outer ring 20 and the side plug 50 along the axial direction of the outer ring 20 and the radial direction of the side plug 50, and the second end 52 protrudes outward in the direction of the annular outer side of the outer ring 20 to form an arc shape, and the side plug 50 can provide more space for the bolt 90 to be radially arranged.

[0039] like Figure 10As shown, the main difference between Embodiment Six and Embodiment One is that the inner ring 30 forms a radial channel 32 instead of the channel 22 formed on the outer ring 20. One end of the channel 32 extends to the annular inner side of the inner ring 30, and the other end of the channel 32 connects to the chamber 80. The inner ring 30 forms an annular sidewall 34 that surrounds the channel 32. The rolling element 40 is inserted into the chamber 80 through the channel 32 from the annular inner side of the inner ring 30. The side plug 50 is axially disposed in the channel 32. The first end 51 of the side plug 50 is adjacent to the chamber 80, and the second end 52 of the side plug 50 is adjacent to the annular inner side of the inner ring 30. The first sealing part 60 is tightly sealed. The second end 52 and the side wall 34 are tightly bonded to prevent lubricating material from leaking out through the channel 32. The second sealing part 70 is tightly bonded to the first sealing part 60 and the side wall 34. The second end 52 sinks into the channel 32, so that the channel 32 accommodates the first sealing part 60 and the second sealing part 70. The first sealing part 60 has an annular second annular surface 62, which surrounds the radial periphery of the first sealing part 60 and is tightly bonded to the side wall 34. The second sealing part 70 has an annular third annular surface 72, which surrounds the radial periphery of the second sealing part 70 and is tightly bonded to the side wall 34.

[0040] Furthermore, the conical surface 54 disclosed in Embodiment 2 can be applied to Embodiment 6 to form a modified embodiment based on Embodiment 6 (not shown in the figure); Embodiments 3 and 4 respectively disclose the shape of the second end 52, which can also be applied to Embodiment 6 to form other modified embodiments (not shown in the figure), wherein the second end 52 protrudes towards the annular inner side of the inner ring 30 to form an arc or spherical arc; the aforementioned modified embodiments are obtained directly and without difference by those skilled in the art based on Embodiments 2, 3, 4 and 6.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A side-plug type rolling bearing, characterized in that... include: An outer ring forms a channel along the radial direction. One end of the channel extends to the outer ring's annular outer sidewall, which encircles the channel. An inner ring and an outer ring surround the outer side of the inner ring. The inner and outer rings are coaxial, and a circular chamber is formed between the outer and inner rings. A channel connects the chamber, and the interior of the chamber is filled with lubricating material. Several rolling elements are arranged in a ring in the chamber to maintain the coaxiality of the outer ring and the inner ring, and each rolling element cooperates with the outer ring and the inner ring; A side plug is axially disposed in the channel. The side plug has a first end and a second end. The first end and the second end are opposite to each other along the axial direction of the side plug. The first end is adjacent to the chamber, and the second end is adjacent to the annular outer side of the outer ring. A first annular surface is formed on the radial circumference of the side plug. The first annular surface is located between the first end and the second end. The first annular surface and the sidewall are closely adjacent to each other along the radial direction of the side plug. A first sealing part is provided in the channel. The first sealing part is made of a liquid material with high fluidity and low curing shrinkage. The first sealing part is tightly bonded to the second end and the side wall to prevent lubricating substances from leaking out through the channel. A second sealing part is provided in the channel. The second sealing part is made of a gel-like polymer material that has been hardened. The second sealing part is tightly bonded to the first sealing part and the side wall. The first sealing part is located between the second end and the second sealing part. The second sealing part provides support for the first sealing part. The second end sinks into the channel, which accommodates the first sealing part and the second sealing part. The first sealing part has an annular second annular surface that surrounds the radial periphery of the first sealing part and is tightly bonded to the sidewall. The second sealing part has an annular third annular surface that surrounds the radial periphery of the second sealing part and is tightly bonded to the sidewall.

2. The side-plug type rolling bearing according to claim 1, characterized in that... The side plug forms a conical surface, which is adjacent to the second end and the first annular surface. The outer diameter of the conical surface increases from the second end to the first annular surface, and the first sealing part is tightly bonded to the conical surface.

3. The side-plug type rolling bearing according to claim 1, characterized in that... The second end protrudes outwards from the outer ring, forming an arc or spherical shape.

4. A side-plug type rolling bearing, characterized in that... include: An inner ring forms a channel along the radial direction. One end of the channel extends to the inner ring of the inner ring. The inner ring forms a ring-shaped sidewall that surrounds the channel. An outer ring surrounds the outer side of the inner ring, and the inner and outer rings are coaxial. A circular chamber is formed between the outer and inner rings, and a channel connects the chamber. The interior of the chamber is filled with lubricating material. Several rolling elements are arranged in a ring in the chamber to maintain the coaxiality of the outer ring and the inner ring, and each rolling element cooperates with the outer ring and the inner ring; A side plug is axially disposed in the channel. The side plug has a first end and a second end, which are opposite to each other along the axial direction of the side plug. The first end is adjacent to the chamber, and the second end is adjacent to the annular inner side of the inner ring. A first annular surface is formed on the radial circumference of the side plug. The first annular surface is located between the first end and the second end. The first annular surface and the sidewall are closely adjacent to each other along the radial direction of the side plug. A first sealing part is provided in the channel. The first sealing part is made of a liquid material with high fluidity and low curing shrinkage. The first sealing part is tightly bonded to the second end and the side wall to prevent lubricating substances from leaking out through the channel. A second sealing part is provided in the channel. The second sealing part is made of a gel-like polymer material that has been hardened. The second sealing part is tightly bonded to the first sealing part and the side wall. The first sealing part is located between the second end and the second sealing part. The second sealing part provides support for the first sealing part. The second end sinks into the channel, which accommodates the first sealing part and the second sealing part. The first sealing part has an annular second annular surface that surrounds the radial periphery of the first sealing part and is tightly bonded to the sidewall. The second sealing part has an annular third annular surface that surrounds the radial periphery of the second sealing part and is tightly bonded to the sidewall.

5. The side-plug type rolling bearing according to claim 4, characterized in that... The side plug forms a conical surface, which is adjacent to the second end and the first annular surface. The outer diameter of the conical surface increases from the second end to the first annular surface, and the first sealing part is tightly bonded to the conical surface.

6. The side-plug type rolling bearing according to claim 4, characterized in that... The second end protrudes towards the inner side of the inner ring, forming an arc or spherical shape.

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