Deep groove ball bearing with dustproof and oil-proof dual structure

Abstract

The utility model discloses a deep groove ball bearing with a dustproof and oil-proof dual structure, which belongs to the technical field of bearings, and comprises a retainer, balls mounted on the outer wall of the retainer, and an inner ring mounted on the inner side of the retainer, the outer ring is installed on the outer side of the retainer, the inner wall of the outer ring abuts against the balls, sealing assemblies are installed on the two sides of the axial position of the retainer, gaps of the combination portions of the sealing assemblies and the deep groove ball bearing can be filled with first sealing rubber rings and second sealing rubber rings which form the sealing assemblies, and the good dustproof effect can be achieved; and the gap between the rotor and the stator is filled with the second sealing rubber ring, and after entering the inner side of the flow channel, oil dirt flows downwards under the action of gravity and is finally guided to the outer side of the deep groove ball bearing through the liquid drainage hole, so that the oil dirt can be effectively prevented from being butted at the retainer, and the smoothness of the ball bearing is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and more specifically to a deep groove ball bearing with a dustproof and oilproof dual structure. Background Art

[0002] Bearing is an important component used for the rotation support of mechanical bodies. It can be seen everywhere in our lives and work. In order to adapt to different working environments, there are many types of bearings. Common bearings usually include an outer ring, an inner ring, several rolling elements and a cage. A raceway for accommodating several rollers is arranged between the outer ring and the inner ring. The cage is used to form a spacing and guide for the several rollers. The deep groove ball bearing refers to a bearing structure in which the rolling element is ball-shaped, and the raceway is formed by the recesses in the outer ring and the inner ring to provide radial and axial rotation support. It has the characteristics of simple structure and the widest application. It is precisely because of this that deep groove ball bearings often need to operate under some special working conditions, such as in a highly polluted environment, or in some special environments, such as strong magnetic / ultra-high speed / solid lubrication, or a combination of multiple conditions. Therefore, deep groove ball bearings often need to have stronger adaptability.

[0003] An existing patent is a deep groove ball bearing, with patent authorization number CN217873776U. The screw is divided into a stud and a cross column, and the outer wall of the stud is provided with an internal thread ring and a swivel. The inner wall of the swivel is connected to the rectangular plate through an annular groove, and the rectangular plate is connected to the cross column. When the thickness of the insulation board is large, it is only necessary to rotate the internal thread ring to drive the cross column to move, thereby increasing the length of the screw, which is convenient for the installation of insulation board bodies of different thicknesses and increases the overall installation application range. The structural design is ingenious and has strong practicality.

[0004] However, in patent authorization number CN217873776U, the second mounting grooves are respectively arranged on both sides of the outer ring axial direction, so as to facilitate the installation of the sealing ring or the dust cover on both sides of the bearing. Since the installation of the sealing ring or the dust cover alone can only play a single dust-proof or oil-proof role, it is easy to cause sludge to accumulate in the retaining frame, affecting the silkiness of the ball. Therefore, we propose a deep groove ball bearing with a dust-proof and oil-proof dual structure to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a deep groove ball bearing with a dust-proof and oil-proof dual structure. It can fill the gap between the sealing component and the deep groove ball bearing by the first sealing rubber ring and the second sealing rubber ring that constitute the sealing component, so as to play a good dust-proof role, and use the second sealing rubber ring to fill the gap between the rotor and the stator. When the oil enters the inner side of the flow channel, it flows downward under the action of gravity and finally guides the oil to the outside of the deep groove ball bearing through the drainage hole, thereby effectively avoiding the oil sludge from docking at the retaining frame and ensuring the silky smoothness of the ball.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A deep groove ball bearing with a dustproof and oilproof dual structure, comprising a cage, a ball mounted on the outer wall of the cage, an inner ring mounted on the inner side of the cage, an outer ring mounted on the outer side of the cage and the inner wall of which abuts against the ball, and sealing components are installed on both sides of the axial position of the cage;

[0010] The sealing assembly includes a stator fixedly connected to the inner ring, a rotor fixedly connected to the outer ring and rotatably connected to the stator, a first sealing rubber ring embedded in the inner wall of the stator and abutting against the outer wall of the inner ring, a first boss integrally formed on the surface of the stator close to the rotor and arranged in an annular structure, a second boss integrally formed on the surface of the rotor close to the stator and arranged in an annular structure, a second sealing rubber ring installed between the first boss and the second boss, a flow channel arranged between the stator and the rotor and located on a side away from the second boss, a drainage hole opened on the surface of the stator away from the rotor and conductively connected to the flow channel, and a third sealing rubber ring embedded in the outer wall of the rotor and abutting against the inner wall of the outer ring.

[0011] Furthermore, the outer wall of the inner ring is symmetrically provided with a second sealing groove, and the second sealing groove abuts against the first sealing rubber ring.

[0012] Furthermore, a first sealing groove is symmetrically formed on the inner wall of the outer ring, and the first sealing groove abuts against the third sealing rubber ring.

[0013] Furthermore, the inner diameter of the first boss is greater than the outer diameter of the second boss.

[0014] Furthermore, a lubrication cavity is provided at a position of the first boss and the second boss corresponding to the second sealing rubber ring.

[0015] Furthermore, a groove is provided at an edge of the rotor close to the stator, and the groove is conductively connected to the flow channel.

[0016] Furthermore, the drainage hole is located at the root of the stator.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) In this solution, the first sealing rubber ring installed on the inner wall of the stator abuts against the outer wall of the inner ring, and the third sealing rubber ring installed on the outer wall of the rotor abuts against the inner wall of the outer ring to fill the gap between the sealing component and the deep groove ball bearing, which can play a good dust-proof role;

[0020] The rotor can rotate relative to the stator, and the second sealing rubber ring is used to fill the gap between the rotor and the stator. When the oil enters the inner side of the flow channel, it flows downward under the action of gravity and finally guides the oil to the outside of the deep groove ball bearing through the drainage hole, thereby effectively avoiding the oil sludge from docking at the cage and ensuring the smoothness of the ball.

[0021] (2) In this solution, lubrication cavities are provided at the positions of the first boss and the second boss corresponding to the second sealing rubber ring, thereby reducing the friction between the first boss and the second boss and the second sealing rubber ring, reducing the wear of the second sealing rubber ring, and thus ensuring the sealing effect of the second sealing rubber ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the disassembly of the utility model;

[0024] Figure 3 It is a front view schematic diagram of the sealing component of the utility model;

[0025] Figure 4 It is a schematic cross-sectional view of the AA portion of the sealing component of the present invention.

[0026] Description of the numbers in the figure:

[0027] 1. Cage; 2. Ball; 3. Inner ring; 4. Outer ring; 5. Stator; 6. Rotor; 7. First sealing rubber ring; 8. First boss; 9. Second boss; 10. Second sealing rubber ring; 11. Flow channel; 12. Drain hole; 13. Third sealing rubber ring; 14. First sealing groove; 15. Second sealing groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0029] Example:

[0030] See also Figure 1-4 A deep groove ball bearing with a dustproof and oilproof dual structure comprises a cage 1, a ball 2 mounted on the outer wall of the cage 1, an inner ring 3 mounted on the inner side of the cage 1, an outer ring 4 mounted on the outer side of the cage 1 and having an inner wall abutting against the ball 2, and sealing components are mounted on both sides of the axial position of the cage 1;

[0031] The sealing assembly includes a stator 5 fixedly connected to the inner ring 3, a rotor 6 fixedly connected to the outer ring 4 and rotatably connected to the stator 5, a first sealing rubber ring 7 embedded in the inner wall of the stator 5 and abutting against the outer wall of the inner ring 3, a first boss 8 integrally formed on the surface of the stator 5 close to the rotor 6 and arranged in an annular structure, a second boss 9 integrally formed on the surface of the rotor 6 close to the stator 5 and arranged in an annular structure, a second sealing rubber ring 10 installed between the first boss 8 and the second boss 9, a flow channel 11 arranged between the stator 5 and the rotor 6 and located on the side away from the second boss 9, a drainage hole 12 opened on the surface of the stator 5 away from the rotor 6 and conductively connected to the flow channel 11, and a third sealing rubber ring 13 embedded in the outer wall of the rotor 6 and abutting against the inner wall of the outer ring 4;

[0032] It should be noted that when the deep groove ball bearing with the dustproof and oilproof dual structure is in use, the outer ring 4 of the deep groove ball bearing rotates relative to the inner ring 3, and the first sealing rubber ring 7 installed on the inner wall of the stator 5 abuts against the outer wall of the inner ring 3, and the third sealing rubber ring 13 installed on the outer wall of the rotor 6 abuts against the inner wall of the outer ring 4 to fill the gap between the sealing component and the deep groove ball bearing, which can play a good dustproof role;

[0033] The rotor 6 can rotate relative to the stator 5, and the second sealing rubber ring 10 is used to fill the gap between the rotor 6 and the stator 5. When the oil enters the inner side of the flow channel 11, it flows downward under the action of gravity and finally guides the oil to the outer side of the deep groove ball bearing through the drainage hole 12, thereby effectively avoiding the oil sludge from docking at the retaining frame 1 and ensuring the smoothness of the ball 2.

[0034] like Figure 2 , Figure 4As shown, the outer wall of the inner ring 3 is symmetrically provided with a second sealing groove 15, and the second sealing groove 15 abuts against the first sealing rubber ring 7, and the inner wall of the outer ring 4 is symmetrically provided with a first sealing groove 14, and the first sealing groove 14 abuts against the third sealing rubber ring 13;

[0035] It should be noted that the gap between the sealing component and the deep groove ball bearing can be filled to provide good dust prevention.

[0036] like Figure 4 As shown, the inner diameter of the first boss 8 is greater than the outer diameter of the second boss 9, and the first boss 8 and the second boss 9 are both provided with lubrication cavities at positions corresponding to the second sealing rubber ring 10;

[0037] It should be noted that the friction between the first boss 8 and the second boss 9 and the second sealing rubber ring 10 is reduced, and the wear of the second sealing rubber ring 10 is reduced, thereby ensuring the sealing effect of the second sealing rubber ring 10.

[0038] like Figure 4 As shown, a groove is provided at the edge of the rotor 6 close to the stator 5, and the groove is connected to the flow channel 11, and the drainage hole 12 is located at the root of the stator 5;

[0039] It should be noted that this is beneficial to draining the oil and also beneficial to draining the oil through the drain hole 12 .

[0040] When in use: the outer ring 4 of the deep groove ball bearing rotates relative to the inner ring 3, and the first sealing rubber ring 7 installed on the inner wall of the stator 5 abuts against the outer wall of the inner ring 3, and the third sealing rubber ring 13 installed on the outer wall of the rotor 6 abuts against the inner wall of the outer ring 4 to fill the gap between the sealing component and the deep groove ball bearing, which can play a good dustproof role;

[0041] The rotor 6 can rotate relative to the stator 5, and the second sealing rubber ring 10 is used to fill the gap between the rotor 6 and the stator 5. When the oil enters the inner side of the flow channel 11, it flows downward under the action of gravity and finally guides the oil to the outer side of the deep groove ball bearing through the drainage hole 12, thereby effectively avoiding the oil sludge from docking at the retaining frame 1 and ensuring the smoothness of the ball 2.

[0042] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A deep groove ball bearing with a dustproof and oilproof dual structure, comprising a cage (1), a ball (2) mounted on the outer wall of the cage (1), an inner ring (3) mounted on the inner side of the cage (1), and an outer ring (4) mounted on the outer side of the cage (1) and having an inner wall abutting against the ball (2), characterized in that: Sealing components are installed on both sides of the axial position of the retaining frame (1); The sealing assembly comprises a stator (5) fixedly connected to the inner ring (3), a rotor (6) fixedly connected to the outer ring (4) and rotatably connected to the stator (5), a first sealing rubber ring (7) embedded in the inner wall of the stator (5) and abutting against the outer wall of the inner ring (3), a first boss (8) integrally formed on the surface of the stator (5) close to the rotor (6) and arranged in an annular structure, a second boss (9) integrally formed on the surface of the rotor (6) close to the stator (5) and arranged in an annular structure, a second sealing rubber ring (10) installed between the first boss (8) and the second boss (9), a flow channel (11) arranged between the stator (5) and the rotor (6) and located on a side away from the second boss (9), a drainage hole (12) provided on the surface of the stator (5) away from the rotor (6) and conductively connected to the flow channel (11), and a third sealing rubber ring (13) embedded in the outer wall of the rotor (6) and abutting against the inner wall of the outer ring (4).

2. The deep groove ball bearing with a dustproof and oilproof dual structure according to claim 1, characterized in that: The outer wall of the inner ring (3) is symmetrically provided with a second sealing groove (15), and the second sealing groove (15) is in contact with the first sealing rubber ring (7).

3. The deep groove ball bearing with a dustproof and oilproof dual structure according to claim 1, characterized in that: The inner wall of the outer ring (4) is symmetrically provided with a first sealing groove (14), and the first sealing groove (14) is in contact with the third sealing rubber ring (13).

4. The deep groove ball bearing with a dustproof and oilproof dual structure according to claim 1, characterized in that: The inner diameter of the first boss (8) is greater than the outer diameter of the second boss (9).

5. The deep groove ball bearing with a dustproof and oilproof dual structure according to claim 1, characterized in that: The first boss (8) and the second boss (9) are both provided with lubrication cavities at locations corresponding to the second sealing rubber ring (10).

6. The deep groove ball bearing with a dustproof and oilproof dual structure according to claim 1, characterized in that: The rotor (6) is provided with a groove at an edge portion close to the stator (5), and the groove is conductively connected to the flow channel (11).

7. The deep groove ball bearing with a dustproof and oilproof dual structure according to claim 1, characterized in that: The drainage hole (12) is located at the root of the stator (5).

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