A deep groove ball bearing that is easy to position

Abstract

This utility model relates to the field of deep groove ball bearing technology, and in particular to a deep groove ball bearing that is easy to position. Each first groove has an elastic hollow ring, and each elastic hollow ring is connected to two symmetrically arranged connectors. One end of each connector is connected to a vent pipe. Each sealing plate has a second groove, and each sealing plate has two symmetrically arranged channels. Each channel connects to the corresponding second groove and the vent pipe. Each second groove is connected to a sealing element. In this utility model, a portion of the gas inside the elastic hollow ring passes sequentially through the connector and the vent pipe into the channel. The gas in the channel enters the second groove, causing an increase in pressure within the second groove. The gas in the second groove compresses the sealing element, causing the sealing element to compress the outer ring wall of the inner ring, sealing the gap between the sealing plate and the outer ring wall of the inner ring. This prevents dust and gas from entering through the gap, improving the dustproof effect.

Description

Technical Field

[0001] This utility model relates to the field of deep groove ball bearing technology, and in particular to a deep groove ball bearing that is easy to position. Background Technology

[0002] Deep groove ball bearings are the most widely used type of rolling bearing. They reduce the coefficient of friction by changing the friction between surfaces to rolling friction through the rolling of rollers.

[0003] In the application document CN202222424878.0, the positioning hole 501 on the dust cover 5 is aligned with the positioning block 602 in the positioning assembly 6 and moved along the positioning block 602, so that the inner side of the dust cover 5 contacts the annular groove 101 and the support seat 601. The support seat 601 seals the contact part of the dust cover 5 through the sealing ring 603. The moving plate 707 is released, and under the action of the spring 704, the snap block 703 is reset and inserted into the snap groove 102, so that the dust cover 5 is fixed between the outer ring 1 and the inner ring 2, and the installation is completed.

[0004] After the dust cover is installed, there is a gap between the inner ring wall of the dust cover and the outer ring wall of the inner ring. Dust, particulate matter and other pollutants in the external environment can easily penetrate the sealing barrier through this channel and directly invade the internal cavity of the bearing. The pollutants will adhere to or mix with the grease and eventually settle on the working surface of the rolling elements and their raceways, destroying the purity and effectiveness of the lubricant. Furthermore, it will cause abrasive wear between the rolling elements and the inner and outer ring raceways, significantly aggravating the running resistance and surface scratches. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where external dust can easily pass through gaps and fall onto the rolling ball, thus affecting the rolling of the rolling ball between the inner and outer rings. This invention proposes a deep groove ball bearing that is easy to position.

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

[0007] Design a deep groove ball bearing for easy positioning, including an outer ring and an inner ring. The outer ring and the inner ring are connected by two parallel sealing plates through a fixing mechanism. Each sealing plate has a first groove, and each first groove has an elastic hollow ring. Each elastic hollow ring is connected to two symmetrically arranged connectors, and one end of each connector is connected to a vent pipe. Each sealing plate has a second groove, and each sealing plate has two symmetrically arranged channels. Each channel is connected to the corresponding second groove and the vent pipe. Each second groove is connected to a seal.

[0008] Preferably, each of the sealing plates is connected with a plurality of connecting posts at equal intervals along the axial direction, and one end of each connecting post is fixedly connected to a retainer, and each retainer cooperates with a rolling ball.

[0009] Preferably, the fixing mechanism includes a fixing screw, the sealing plate has a groove hole, the fixing screw passes through the groove hole, the outer ring has a threaded groove, and one end of the fixing screw is connected to the threaded groove.

[0010] Preferably, the sealing element includes a sealing ring located in the second groove, and an arc-shaped sleeve is fixedly connected to the upper end of the sealing ring, with a cavity provided between the arc-shaped sleeve and the sealing ring.

[0011] Preferably, the sealing ring is a rubber ring, and the sealing ring and the arc-shaped sleeve are an integral structure.

[0012] Preferably, the upper end of the sealing ring is provided with a third groove, which communicates with the cavity.

[0013] The deep groove ball bearing proposed in this utility model, which is easy to position, has the following advantages:

[0014] A portion of the gas inside the elastic hollow ring passes sequentially through the connector and the air guide tube into the channel. The gas in the channel enters the second groove, causing the pressure inside the second groove to increase. The gas in the second groove squeezes the seal, causing the seal to squeeze the outer ring wall of the inner ring, sealing the gap between the sealing plate and the outer ring wall of the inner ring, preventing dust and gas from entering through the gap, and improving the dustproof effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a deep groove ball bearing that is easy to position, as proposed in this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of a deep groove ball bearing that is easy to position, as proposed in this utility model.

[0017] Figure 3 for Figure 2 A magnified view of the structure at point A above;

[0018] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point B above.

[0019] In the diagram: 1. Outer ring; 2. Inner ring; 3. Rolling ball; 4. Sealing plate; 5. Fixing mechanism; 6. Connecting column; 7. Cage; 8. First groove; 9. Elastic hollow ring; 10. Connector; 11. Air guide tube; 12. Channel; 13. Second groove; 14. Seal; 51. Fixing screw; 52. Groove hole; 53. Threaded groove; 141. Sealing ring; 142. Arc sleeve; 143. Chamber; 144. Third groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1: Refer to Figure 1-3 A deep groove ball bearing for easy positioning includes an outer ring 1 and an inner ring 2. A plurality of rolling balls 3 are disposed between the outer ring 1 and the inner ring 2. Two parallel sealing plates 4 are connected between the outer ring 1 and the inner ring 2 via a fixing mechanism 5. A plurality of connecting posts 6 are evenly spaced along the axial direction on each sealing plate 4. A cage 7 is fixedly connected to one end of each connecting post 6. Each cage 7 cooperates with a rolling ball 3. A first groove 8 is formed on each sealing plate 4. An elastic hollow ring 9 is disposed within each first groove 8. Each elastic hollow ring 9 contacts the outer ring 1. Two symmetrically arranged connectors 10 are connected to each elastic hollow ring 9. A vent pipe 11 is connected to one end of each connector 10. A second groove 13 is formed on each sealing plate 4. Two symmetrically arranged channels 12 are formed on each sealing plate 4. Each channel 12 connects the corresponding second groove 13 to the vent pipe 11. A seal 14 is connected to each second groove 13.

[0022] Work process:

[0023] After the sealing plate 4 is fixed by the fixing mechanism 5, the outer ring 1 squeezes the elastic hollow ring 9. The elastic hollow ring 9 is deformed after being compressed. A part of the gas in the elastic hollow ring 9 passes through the connector 10 and the air guide pipe 11 in sequence and enters the channel 12. The gas in the channel 12 enters the second groove 13, which causes the pressure in the second groove 13 to increase. The gas in the second groove 13 squeezes the sealing element 14, which causes the sealing element 14 to squeeze the outer ring wall of the inner ring 2, sealing the gap between the sealing plate 4 and the outer ring wall of the inner ring 2, preventing dust and gas from entering through the gap and improving the dustproof effect.

[0024] Example 2: Refer to Figure 3As another preferred embodiment of this utility model, the difference from embodiment 1 is that the fixing mechanism 5 includes a fixing screw 51, a groove hole 52 is provided on the sealing plate 4, the fixing screw 51 passes through the groove hole 52, a threaded groove 53 is provided on the outer ring 1, one end of the fixing screw 51 is connected to the threaded groove 53, the fixing screw 51 is rotated, and the sealing plate 4 is fixed after the fixing screw 51 is connected to the threaded groove 53, and the sealing plate 4 is fixed in a convenient way.

[0025] Example 3: Reference Figure 4 As another preferred embodiment of this utility model, the difference from embodiment 1 is that the sealing element 14 includes a sealing ring 141, the sealing ring 141 is located in the second groove 13, the upper end of the sealing ring 141 is fixedly connected to an arc-shaped sleeve 142, the sealing ring 141 is a rubber ring, the sealing ring 141 and the arc-shaped sleeve 142 are an integral structure, a cavity 143 is provided between the arc-shaped sleeve 142 and the sealing ring 141, and a third groove 144 is provided at the upper end of the sealing ring 141, the third groove 144 communicates with the cavity 143;

[0026] The gas introduced into the third groove 144 compresses the arc-shaped sleeve 142. After being compressed, the arc-shaped sleeve 142 is concave downward, thereby reducing the volume of the chamber 143 and increasing the pressure inside the chamber 143. The gas inside the chamber 143 enters the third groove 144, and the gas in the third groove 144 compresses the sealing ring 141, improving the sealing effect of the sealing ring 141.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A deep groove ball bearing for easy positioning, comprising an outer ring (1) and an inner ring (2), wherein the outer ring (1) and the inner ring (2) are connected by two parallel sealing plates (4) via a fixing mechanism (5), characterized in that, in: Each of the sealing plates (4) is provided with a first groove (8), each of the first grooves (8) is provided with an elastic hollow ring (9), each of the elastic hollow rings (9) is connected to two symmetrically arranged connectors (10), one end of each connector (10) is connected to a vent pipe (11), each of the sealing plates (4) is provided with a second groove (13), each of the sealing plates (4) is provided with two symmetrically arranged channels (12), each of the channels (12) is connected to the corresponding second groove (13) and the vent pipe (11), and each of the second grooves (13) is connected to a sealing element (14).

2. The deep groove ball bearing for easy positioning according to claim 1, characterized in that, Each of the sealing plates (4) is connected with several connecting posts (6) at equal intervals along the axis. One end of each of the connecting posts (6) is fixedly connected to a retainer (7), and each retainer (7) cooperates with the rolling ball (3).

3. The deep groove ball bearing for easy positioning according to claim 1, characterized in that, The fixing mechanism (5) includes a fixing screw (51), a groove hole (52) is provided on the sealing plate (4), the fixing screw (51) passes through the groove hole (52), a threaded groove (53) is provided on the outer ring (1), and one end of the fixing screw (51) is connected to the threaded groove (53).

4. The deep groove ball bearing for easy positioning according to claim 1, characterized in that, The sealing element (14) includes a sealing ring (141), which is located in the second groove (13). An arc-shaped sleeve (142) is fixedly connected to the upper end of the sealing ring (141), and a cavity (143) is provided between the arc-shaped sleeve (142) and the sealing ring (141).

5. The deep groove ball bearing for easy positioning according to claim 4, characterized in that, The sealing ring (141) is a rubber ring, and the sealing ring (141) and the arc-shaped sleeve (142) are an integral structure.

6. The deep groove ball bearing for easy positioning according to claim 5, characterized in that, The upper end of the sealing ring (141) is provided with a third groove (144), which is connected to the chamber (143).

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