Dustproof deep groove ball bearing
By installing dustproof rings on both sides of the inner ring of the deep groove ball bearing and using the clamping design of the mounting bolts and rectangular structure, the problem of loosening of the dustproof ring when rotating at high speed is solved, and the dustproof effect of the bearing is improved.
Patent Information
- Application Number
- CN202420178847.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-25
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-25
AI Technical Summary
When existing dust-proof deep groove ball bearings rotate at high speed, the dust-proof ring may loosen through threaded connections, resulting in poor dust-proof effect.
A clamping structure with dust rings installed on both sides of the inner ring of the bearing is designed and fixed by mounting bolts, combining rectangular bumps and rectangular clamp slots to ensure the stable installation of the dust ring, while using the matching of ring projections and grooves. , close the gap between the outer ring of the bearing and the dust-proof ring to improve the dust-proof effect.
Effectively prevent the dust ring from loosening, enhance the dust protection capability of the bearing, and ensure that dust can still be effectively prevented under high-speed rotation conditions.
Smart Images
Figure CN222254737U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a dustproof deep groove ball bearing. Background Art
[0002] Deep groove ball bearings are the most widely used rolling bearings. They are characterized by low friction resistance and high speed. They can be used on parts that bear radial loads or combined loads of radial and axial loads, and can also be used on parts that bear axial loads.
[0003] In the prior art, a dustproof deep groove ball bearing proposed in patent application number "CN202120353632.1" includes an outer shaft body, an inner shaft body is fixedly installed on the inner side of the outer shaft body, a first limiting hole is provided on the outer surface of the inner shaft body, and a dustproof ring is fixedly installed on the middle outer side between the inner shaft body and the outer shaft body, and a first thread is provided on the outer surface of the dustproof ring.
[0004] However, in the prior art, such as the deep groove ball bearing proposed in patent application number "CN202120353632.1", dust is prevented by dust rings on both sides, but the dust rings are fixed to the bearings by threaded connections. During the high-speed rotation of the bearings, the dust rings may become loose, and the dust-proof effect is poor. Utility Model Content
[0005] The utility model aims to provide a dustproof deep groove ball bearing to solve the problems raised in the above background technology.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A dustproof deep groove ball bearing comprises a bearing outer ring and a bearing inner ring, a plurality of rolling bodies are evenly arranged between the bearing outer ring and the bearing inner ring, dustproof rings are arranged on both sides of the bearing inner ring, annular grooves are opened on both sides of the bearing outer ring, an annular protrusion is fixedly connected to the side of the dustproof ring close to the bearing outer ring, a plurality of rolling balls are evenly arranged on the annular protrusion, and the annular protrusion and the annular groove are matched.
[0008] The inner ring of the bearing is provided with threaded holes in a circular array on both sides, the dust ring is provided with mounting holes in a circular array, and one side of the dust ring is provided with multiple mounting bolts, one end of the mounting bolt passes through the mounting hole and is threadedly connected to the threaded hole, so as to fix the dust ring to the inner ring of the bearing.
[0009] Preferably, a first raceway is formed on the inner surface of the bearing outer ring, and a second raceway is formed on the outer surface of the bearing inner ring, and both the first raceway and the second raceway are adapted to the rolling element.
[0010] Preferably, a first protective ring is fixedly connected to a side of the dustproof ring close to the inner ring of the bearing, and the first protective ring is sleeved on the outer surface of the inner ring of the bearing.
[0011] Preferably, a second protective ring is fixedly connected to one side of the dust ring close to the inner ring of the bearing, the outer ring of the bearing is sleeved on the outer surface of the second protective ring, and the radius of the second protective ring is greater than the radius of the first protective ring.
[0012] Preferably, a positioning sleeve is fixedly connected to one side of the dustproof ring close to the inner ring of the bearing, and one end of the positioning sleeve is provided with rectangular slots in a ring array.
[0013] Preferably, the inner surface of the bearing inner ring is fixedly connected with rectangular protrusions in an annular array, and the rectangular protrusions and the rectangular slots are matched.
[0014] Beneficial effects of the utility model:
[0015] The utility model installs dustproof rings on both sides of the bearing inner ring, and the dustproof rings cover both sides of the bearing inner ring and the bearing outer ring at the same time, thereby playing the role of dustproof protection. At the same time, it is fixed by mounting bolts, and the clamping of the rectangular protrusion and the rectangular groove makes the installation of the dustproof ring more stable, and the dustproof ring is not easy to loosen. When the dustproof ring is located on the outside of the bearing outer ring, the annular protrusion will extend into the annular groove, and the gap between the dustproof ring and the bearing outer ring will be closed, thereby further improving the dustproof protection capability of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This utility model Figure 1 Cross-sectional view of the outer ring of the middle bearing;
[0019] Figure 3 This utility model Figure 1 Schematic diagram of the connection between the outer ring of the middle bearing and the inner ring of the bearing;
[0020] Figure 4 This utility model Figure 1 Schematic diagram of the structure of the dust ring.
[0021] The reference numerals in the figures are as follows:
[0022] 1. Bearing outer ring, 101. First raceway, 2. Bearing inner ring, 201. Second raceway, 3. Rolling element, 4. Dust ring, 5. Annular groove, 6. Annular protrusion, 7. Rolling ball, 8. Threaded hole, 9. Mounting hole, 10. Mounting bolt, 11. First protective ring, 12. Second protective ring, 13. Positioning sleeve, 14. Rectangular slot, 15. Rectangular protrusion. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] A dustproof deep groove ball bearing comprises a bearing outer ring 1 and a bearing inner ring 2, a plurality of rolling bodies 3 are evenly arranged between the bearing outer ring 1 and the bearing inner ring 2, dustproof rings 4 are arranged on both sides of the bearing inner ring 2, annular grooves 5 are opened on both sides of the bearing outer ring 1, an annular protrusion 6 is fixedly connected to the side of the dustproof ring 4 close to the bearing outer ring 1, a plurality of rolling balls 7 are evenly arranged on the annular protrusion 6, and the annular protrusion 6 and the annular groove 5 are adapted to each other.
[0025] The two sides of the bearing inner ring 2 are provided with threaded holes 8 in a circular array, the dust ring 4 is provided with mounting holes 9 in a circular array, and one side of the dust ring 4 is provided with multiple mounting bolts 10. One end of the mounting bolt 10 passes through the mounting hole 9 and is threadedly connected to the threaded hole 8, so as to fix the dust ring 4 to the bearing inner ring 2.
[0026] like Figure 1 and Figure 3 The outer ring 1 and the inner ring 2 of the bearing are both made of steel, the rolling element 3 is made of ceramic, the radius of the dust ring 4 is consistent with the radius of the outer ring 1 of the bearing, and when the dust ring 4 is installed on one side of the inner ring 2 of the bearing, the annular protrusion 6 can be inserted into the annular groove 5, and the outer surface and the inner surface of the annular protrusion 6 do not contact the annular groove 5, so as to avoid hindering the rotation of the outer ring 1 of the bearing. There is a spherical groove on the annular protrusion 6, and more than half of the rolling ball 7 is located in the spherical groove on the annular protrusion 6, so that the rolling ball 7 can rotate freely without being separated from the annular protrusion 6;
[0027] The number of mounting holes 9 , threaded holes 8 and mounting bolts 10 is consistent and arranged in one-to-one correspondence, so that each mounting bolt 10 can pass through a mounting hole 9 and be threadedly connected to a threaded hole 8 .
[0028] The inner surface of the bearing outer ring 1 is provided with a first raceway 101 , and the outer surface of the bearing inner ring 2 is provided with a second raceway 201 . Both the first raceway 101 and the second raceway 201 are adapted to the rolling element 3 .
[0029] like Figure 1 and Figure 2 The rolling element 3 can move between the first raceway 101 and the second raceway 201, so that the rolling element 3 will not be separated from between the bearing outer ring 1 and the bearing inner ring 2. The bearing outer ring, the bearing inner ring 2, the first raceway 101, the second raceway 201 and the rolling element 3 together constitute a deep groove ball bearing.
[0030] A first protective ring 11 is fixedly connected to one side of the dust ring 4 close to the bearing inner ring 2 , and the first protective ring 11 is sleeved on the outer surface of the bearing inner ring 2 .
[0031] like Figure 1 , Figure 3 and Figure 4 When the dust ring 4 is installed on one side of the bearing inner ring 2, the first protective ring 11 can be sleeved on the outer surface of the bearing inner ring 2, but does not contact the bearing inner ring 2, thereby improving the dustproof ability of the bearing and not hindering the rotation of the bearing inner ring 2.
[0032] The second protective ring 12 is fixedly connected to one side of the dust ring 4 close to the bearing inner ring 2 . The bearing outer ring 1 is sleeved on the outer surface of the second protective ring 12 . The radius of the second protective ring 12 is greater than that of the first protective ring 11 .
[0033] like Figure 1 , Figure 3 and Figure 4 When the dust ring 4 is installed on one side of the bearing inner ring 2, the surface of the second protection ring 12 is close to the inner surface of the bearing outer ring 1, but does not contact the bearing outer ring 1, thereby improving the dustproof ability of the bearing and does not hinder the rotation of the bearing outer ring 1.
[0034] A positioning sleeve 13 is fixedly connected to one side of the dustproof ring 4 close to the bearing inner ring 2 , and a rectangular slot 14 in a ring array is formed at one end of the positioning sleeve 13 .
[0035] like Figure 2 , Figure 3 and Figure 4 When the dust ring 4 is installed on one side of the bearing inner ring 2 , one end of the positioning sleeve 13 can extend into the inner surface of the bearing inner ring 2 and fit together with the inner wall of the bearing inner ring 2 .
[0036] The inner surface of the bearing inner ring 2 is fixedly connected with rectangular protrusions 15 in an annular array, and the rectangular protrusions 15 are matched with the rectangular slots 14.
[0037] like Figure 2 , Figure 3 and Figure 4 When the positioning sleeve 13 is inserted into the inner ring 2 of the bearing, the two ends of the rectangular protrusion 15 are respectively inserted into the rectangular grooves 14 on the two sides of the positioning sleeve 13, so that the inner ring 2 of the bearing can be clamped together with the positioning sleeve 13.
[0038] The working principle of a dustproof deep groove ball bearing provided by the utility model is as follows:
[0039] First, move the two dust rings 4 from both sides toward the bearing inner ring 2, so that the rectangular protrusion 15 and the rectangular slot 14 are clamped together, and the positioning sleeve 13 and the dust ring 4 are clamped together. At this time, the mounting hole 9 and the threaded hole 8 are aligned together, and then the mounting bolt 10 is passed through the mounting hole 9 and threadedly connected to the threaded hole 8 to fix the dust ring 4 and the bearing inner ring 2 together;
[0040] At this time, the annular protrusion 6 will move into the annular groove 5, and the rolling ball 7 will fit into the inner wall of the annular groove 5. The free rotation of the rolling ball 7 will reduce the friction between the annular protrusion 6 and the bearing outer ring 1. At the same time, the annular protrusion 6 will close the gap between the dust ring 4 and the bearing outer ring 1, thereby providing dust protection.
[0041] Compared with the related art, the dustproof deep groove ball bearing provided by the utility model has the following beneficial effects:
[0042] The utility model installs dustproof rings 4 on both sides of the bearing inner ring 2, and the dustproof rings 4 cover both sides of the bearing inner ring 2 and the bearing outer ring 1 at the same time, so as to play the role of dustproof protection. At the same time, the dustproof rings 4 are fixed by the mounting bolts 10, and the rectangular protrusions 15 and the rectangular grooves 14 are clamped, so that the installation of the dustproof rings 4 is more stable, and the dustproof rings 4 are not easy to loosen. When the dustproof rings 4 are located on the outside of the bearing outer ring 1, the annular protrusions 6 will extend into the annular grooves 5, and the gap between the dustproof rings 4 and the bearing outer ring 1 will be closed, thereby further improving the dustproof protection capability of the bearing.
[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A dustproof deep groove ball bearing, comprising a bearing outer ring (1) and a bearing inner ring (2), wherein a plurality of rolling elements (3) are evenly arranged between the bearing outer ring (1) and the bearing inner ring (2), characterized in that: Dust rings (4) are arranged on both sides of the bearing inner ring (2), annular grooves (5) are provided on both sides of the bearing outer ring (1), an annular protrusion (6) is fixedly connected to the side of the dust ring (4) close to the bearing outer ring (1), a plurality of rolling balls (7) are evenly arranged on the annular protrusion (6), and the annular protrusion (6) and the annular groove (5) are matched; The two sides of the bearing inner ring (2) are provided with threaded holes (8) in an annular array, the dust ring (4) is provided with mounting holes (9) in an annular array, and one side of the dust ring (4) is provided with a plurality of mounting bolts (10), one end of the mounting bolts (10) passes through the mounting hole (9) and is threadedly connected to the threaded hole (8), so as to fix the dust ring (4) to the bearing inner ring (2).
2. A dustproof deep groove ball bearing according to claim 1, characterized in that: The inner surface of the bearing outer ring (1) is provided with a first raceway (101), and the outer surface of the bearing inner ring (2) is provided with a second raceway (201), and both the first raceway (101) and the second raceway (201) are compatible with the rolling body (3).
3. A dustproof deep groove ball bearing according to claim 1, characterized in that: A first protective ring (11) is fixedly connected to one side of the dustproof ring (4) close to the bearing inner ring (2), and the first protective ring (11) is sleeved on the outer surface of the bearing inner ring (2).
4. A dustproof deep groove ball bearing according to claim 2, characterized in that: A second protective ring (12) is fixedly connected to one side of the dustproof ring (4) close to the bearing inner ring (2); the bearing outer ring (1) is sleeved on the outer surface of the second protective ring (12); and the radius of the second protective ring (12) is greater than the radius of the first protective ring (11).
5. The dustproof deep groove ball bearing according to claim 1, characterized in that: A positioning sleeve (13) is fixedly connected to one side of the dustproof ring (4) close to the bearing inner ring (2), and one end of the positioning sleeve (13) is provided with rectangular slots (14) in a ring array.
6. A dustproof deep groove ball bearing according to claim 5, characterized in that: The inner surface of the bearing inner ring (2) is fixedly connected with rectangular protrusions (15) in an annular array, and the rectangular protrusions (15) are matched with the rectangular slots (14).