Bearing dustproof sealing structure and bearing

Abstract

The utility model relates to the technical field of bearings, in particular to a dustproof sealing structure of a bearing. According to the technical scheme, the dustproof device comprises a first sealing piece and a second sealing piece, an inner dustproof barrel is arranged on the first sealing piece, an outer dustproof barrel is arranged on the outer side of the inner dustproof barrel, an annular cover plate is fixedly installed on the inner dustproof barrel and the outer dustproof barrel jointly, and a plurality of bristles are arranged on the second sealing piece, distributed in an annular shape and in contact with the outer dustproof barrel. Through movable connection between the first sealing piece and the second sealing piece, it is ensured that the first sealing piece can rotate along with the bearing inner ring, a shielding structure is formed on the outer side of the ball through the first sealing piece, and a soft surrounding structure is formed at the connecting gap of the two sealing pieces through bristles installed on the second sealing piece; compared with a traditional rubber sealing structure, the rubber sealing structure has the advantages that the probability that dust makes contact with the balls can be reduced, the problem that friction resistance borne by the bearing during rotation can be increased by rubber parts is solved, and the rotation efficiency of the bearing is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a bearing dustproof sealing structure. Background Technology

[0002] A bearing is a mechanical component used to support rotating shafts or other moving parts. Its main function is to reduce friction and wear between moving parts, while bearing radial and axial loads to ensure smooth and efficient operation. It typically consists of an inner ring, an outer ring, rolling elements, and a cage. The inner ring mates with the shaft, and the outer ring mates with the bearing housing or other components. The rolling elements roll between the inner and outer rings, creating rolling friction to reduce frictional torque. The cage separates the rolling elements, ensuring their even distribution, preventing collisions, and guiding them along the correct trajectory.

[0003] To prevent the balls from coming into contact with a large amount of dust and increasing bearing wear, a sealing structure needs to be installed on the bearing. Existing bearing sealing structures usually use rubber sealing rings, which are installed in the gap between the inner and outer rings. Generally, annular grooves are set on the outer wall of the inner ring and the inner wall of the outer ring for assembling the sealing ring. The sealing ring forms a sealing structure on both sides of the balls, effectively reducing the chance of the balls coming into contact with dust.

[0004] However, in actual use, since the inner ring of the bearing is in a rotating state, when the seal is installed on the outside of the inner ring, it will increase the frictional resistance it experiences during rotation, which will significantly reduce the rotational efficiency of the bearing. Therefore, this application proposes a bearing dustproof seal structure that can reduce the contact of balls with dust and improve rotational efficiency. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that sealing rings increase the frictional resistance of the bearing inner ring, and to propose a bearing dustproof sealing structure that can reduce the contact of balls with dust and improve rotational efficiency.

[0006] To achieve the above objectives, on the one hand, this utility model provides a bearing dustproof sealing structure, including a first sealing element and a second sealing element, and further comprising:

[0007] An inner dustproof cylinder is provided on the first sealing element, and an outer dustproof cylinder is provided on the outside of the inner dustproof cylinder. An annular cover plate is fixedly installed on both the inner dustproof cylinder and the outer dustproof cylinder.

[0008] The brush bristles are disposed on the second sealing element, and a plurality of the brush bristles are arranged in a ring and in contact with the outer dustproof cylinder.

[0009] Optionally, an annular positioning plate is fixedly installed at one end of the inner dustproof cylinder, and the annular positioning plate is provided with a plurality of screw holes for assembly.

[0010] Optionally, the second seal is provided with a positioning ring, which is located on the outside of the outer dustproof cylinder, and several of the bristles are fixedly installed on the inner sidewall of the positioning ring.

[0011] On the other hand, this utility model provides a bearing, including the bearing dustproof sealing structure as described above, wherein the bearing is composed of an outer ring, balls and an inner ring, and the balls are disposed in the interlayer between the outer ring and the inner ring.

[0012] Optionally, a limiting ring is provided between the outer ring and the inner ring, and the limiting ring has several circular openings arranged in a ring shape, and the balls are all set in the matching circular openings.

[0013] Optionally, a first arc-shaped groove is formed on the inner sidewall of the outer ring, and a second arc-shaped groove is formed on the outer sidewall of the inner ring, with the ball being movably installed between the first and second arc-shaped grooves.

[0014] Compared with the prior art, this application includes at least one of the following beneficial technical effects: The present invention ensures that the first seal can rotate with the inner ring of the bearing through the movable connection between the first seal and the second seal. The first seal forms a shielding structure on the outside of the ball, and the bristles installed on the second seal form a soft barrier structure at the joint between the two seals, which can reduce the probability of dust coming into contact with the ball. Compared with the traditional rubber seal structure, it solves the problem that rubber parts increase the frictional resistance when the bearing rotates, and effectively improves the rotational efficiency of the bearing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the first sealing element of this utility model;

[0017] Figure 3 This is a schematic diagram of the second sealing element structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the bearing in the disassembled state of this utility model.

[0019] Reference numerals: 11, outer ring; 111, first arc-shaped groove; 112, annular mating groove;

[0020] 12. Limiting ring; 121. Circular opening; 122. Ball bearing;

[0021] 13. Inner ring; 131. Second arc-shaped groove;

[0022] 2. First sealing element; 21. Annular positioning plate; 22. Inner dustproof cylinder; 23. Annular cover plate; 24. Outer dustproof cylinder;

[0023] 3. Second seal; 31. Positioning ring; 32. Brush bristles. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] like Figures 1-3 As shown, this utility model provides a bearing dustproof sealing structure, including a first sealing element 2 and a second sealing element 3. The first sealing element 2 is provided with an inner dustproof cylinder 22 and an outer dustproof cylinder 24. The outer dustproof cylinder 24 is disposed outside the matching inner dustproof cylinder 22. An annular cover plate 23 is fixedly installed on both the inner dustproof cylinder 22 and the matching outer dustproof cylinder 24. The inner dustproof cylinder 22, the annular cover plate 23 and the outer dustproof cylinder 24 form a dustproof cover structure, which effectively blocks dust. An annular positioning plate 21 is fixedly installed at one end of the inner dustproof cylinder 22. The annular positioning plate 21 is provided with several screw holes, which facilitates fixing the annular positioning plate 21 on the bearing and ensures that the dustproof cover structure can be firmly installed on both sides of the bearing.

[0027] Furthermore, the second seal 3 is provided with a positioning ring 31, which has multiple screw holes to facilitate its fixed assembly on both sides of the bearing. Several ring-shaped bristles 32 are fixedly installed on the inner wall of the positioning ring 31. The ends of the bristles 32 contact the matching outer dust cover 24. The bristles 32 form a shielding structure near the bearing in the outer dust cover 24, reducing the probability of dust entering the bearing liner area.

[0028] Secondly, the bristles 32 mentioned above are all made of soft material. When the first seal 2 rotates with the bearing, it can prevent the bristles 32 from obstructing the external dust cover 24, thus ensuring the rotation efficiency of the bearing.

[0029] On the other hand, such as Figures 1-4As shown, this utility model provides a bearing, including the bearing sealing structure described above. The bearing consists of an outer ring 11, balls 122, and an inner ring 13. The balls 122 are movably installed in the interlayer between the outer ring 11 and the inner ring 13. The balls 122 reduce the friction between the inner ring 13 and the outer ring 11, ensuring that the inner ring 13 can rotate efficiently inside the outer ring 11. An annular mating groove 112 is cut into the outer ring 11. One end of the outer dustproof sleeve 24 is inserted into the matching annular mating groove 112 and movably connected to it, ensuring that the outer dustproof sleeve 24 can form an effective shield at the outer ring 11, preventing a large amount of dust from entering the outer ring 11 and contacting the balls 122, thus improving the dustproof effect on the balls 122. Since the outer dustproof sleeve 24 is movably connected to the outer ring 11, it will not be obstructed by the outer ring 11 when the inner ring 13 drives the first seal 2 to rotate, thereby improving the rotation efficiency of the bearing inner ring 13.

[0030] Furthermore, a limiting ring 12 is provided in the interlayer between the outer ring 11 and the inner ring 13. The limiting ring 12 has several circular openings 121 arranged in a ring shape. The aforementioned balls 122 are all movably installed in the matching circular openings 121. The limiting ring 12 can limit the installation position of the balls 122, ensuring that the balls 122 can be orderly and equidistantly distributed in the interlayer between the outer ring 11 and the inner ring 13, and ensuring that the balls 122 can roll stably along the first arc groove 111 and the second arc groove 131, thereby improving the stability of the bearing structure.

[0031] In this embodiment, the inner ring 13, the limiting ring 12, and the ball bearing 122 are first assembled inside the outer ring 11. The outer ring 11 and the inner ring 13 limit the ball bearing 122, and the limiting ring 12 further limits the ball bearing 122, ensuring that the ball bearing 122 can be stably installed between the outer ring 11 and the inner ring 13. When the shaft is inserted into the inner ring 13, it can rotate stably under the drive of the drive device. The annular positioning plate 21 is fixedly installed on one side of the inner ring 13 with screws to ensure that the first... A sealing element 2 can be firmly connected to the bearing as a whole. When the inner ring 13 rotates, it can drive the first sealing element 2 to rotate as well. The shielding structure composed of the inner dustproof cylinder 22, the annular cover plate 23 and the outer dustproof cylinder 24 can form a barrier on both sides of several balls 122, reducing the probability of the balls 122 coming into contact with dust. The end of the outer dustproof cylinder 24 away from the annular cover plate 23 is inserted into the annular mating groove 112 cut on the outer ring 11, and the outer dustproof cylinder 24 and the annular mating groove The inner wall of 112 is not in contact. When the first seal 2 rotates with the inner ring 13, it can prevent the first seal 2 from contacting the outer ring 11 and increasing the frictional resistance, thus ensuring the rotational efficiency of the inner ring 13. Since there is a gap between the outer dustproof cylinder 24 and the inner wall of the annular docking groove 112, in order to prevent dust from entering through the gap and contacting the ball 122, the positioning ring 31 of the second seal 3 is fixedly installed on the outer ring 11 by screws. At this time, the ends of several ring-shaped bristles 32 installed on the inner wall of the positioning ring 31 are in contact with the outer dustproof cylinder 24. Then, the bristles 32 form a shielding structure in the gap, which can reduce the probability of dust entering through the gap. Moreover, the bristles 32 are made of soft material. During the rotation of the first seal 2, the ends of the bristles 32 are always in contact with the outer wall of the outer dustproof cylinder 24, which not only ensures the stability of the shielding structure, but also does not increase the frictional resistance caused to the outer dustproof cylinder 24, effectively improving the rotational efficiency of the bearing.

[0032] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A bearing dustproof sealing structure, comprising a first sealing element (2) and a second sealing element (3), characterized in that, It also includes: An inner dustproof cylinder (22) is provided on the first sealing element (2). An outer dustproof cylinder (24) is provided on the outside of the inner dustproof cylinder (22). An annular cover plate (23) is fixedly installed on both the inner dustproof cylinder (22) and the outer dustproof cylinder (24). Brush bristles (32) are disposed on the second seal (3), and a plurality of the brush bristles (32) are arranged in a ring and in contact with the outer dustproof cylinder (24).

2. The bearing dustproof sealing structure according to claim 1, characterized in that, An annular positioning plate (21) is fixedly installed at one end of the inner dustproof cylinder (22), and the annular positioning plate (21) is provided with several screw holes for assembly.

3. The bearing dustproof sealing structure according to claim 2, characterized in that, The second sealing element (3) is provided with a positioning ring (31), which is located on the outside of the outer dustproof cylinder (24), and several of the bristles (32) are fixedly installed on the inner side wall of the positioning ring (31).

4. A bearing, characterized in that, The bearing includes a dustproof sealing structure as described in any one of claims 1-3, wherein the bearing is composed of an outer ring (11), balls (122) and an inner ring (13), and the balls (122) are disposed in the interlayer between the outer ring (11) and the inner ring (13).

5. A bearing according to claim 4, characterized in that, A limiting ring (12) is provided between the outer ring (11) and the inner ring (13). The limiting ring (12) has several circular openings (121) arranged in a ring shape. The balls (122) are all set in the matching circular openings (121).

6. A bearing according to claim 5, characterized in that, The inner wall of the outer ring (11) is provided with a first arc-shaped groove (111), and the outer wall of the inner ring (13) is provided with a second arc-shaped groove (131). The ball bearing (122) is movably installed between the first arc-shaped groove (111) and the second arc-shaped groove (131).

7. A bearing according to claim 6, characterized in that, An annular docking groove (112) is chiseled on the outer ring (11), and one end of the outer dustproof cylinder (24) is inserted into the matching annular docking groove (112) and movably connected thereto.

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