Dustproof deep groove ball bearing

Abstract

The utility model provides a dustproof deep groove ball bearing which comprises an inner ring and an outer ring, a retainer and a plurality of rolling bodies distributed on the retainer are arranged between the inner ring and the outer ring, and a dustproof assembly used for shielding the retainer and the rolling bodies is further arranged between the inner ring and the outer ring. The dustproof assembly comprises a sealing ring and a spring ring, the side, facing the outer ring, of the sealing ring is provided with a concave part used for containing the spring ring, and the side, facing the inner ring, of the sealing ring is provided with a sealing part. The outer ring is provided with an assembling groove matched with the concave part, and the inner ring is provided with a sealing groove matched with the sealing part; one end of the concave part is connected with the sealing part, the other end of the concave part is provided with a bending part, the section of the bending part is V-shaped, an opening of the bending part faces the outer ring, and the outer ring is provided with a positioning groove matched with the end of the bending part. The dustproof deep groove ball bearing has the advantages of being simple in structure, easy to assemble and maintain and good in dustproof performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep groove ball bearings, in particular to a dustproof deep groove ball bearing. Background Art

[0002] Bearings are components that fix and reduce the load friction coefficient during mechanical transmission. Bearings are an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce its friction coefficient during movement, and ensure its rotation accuracy. According to the different friction properties of the moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Rolling bearings include ball bearings, cylindrical roller bearings, and tapered roller bearings. They are generally composed of four parts: an outer ring, an inner ring, rolling elements, and a cage. A sealing ring is usually set between the outer ring and the inner ring to seal and protect the lubricating grease.

[0003] The existing sealing rings for deep groove ball bearings are mostly directly clamped between the inner ring and the outer ring by press-fitting. However, the existing sealing rings are generally only clamped and fixed on the outer ring or the inner ring by a single structure. Since the outer surface of the sealing ring is mostly flat, the stability of the sealing ring will decrease after the bearing is used for a long time, and there is a possibility of falling off. In addition, the single structure clamping and fixing method of the existing sealing ring is not convenient to remove it when replacing or filling grease, which is not conducive to improving the efficiency and convenience of bearing maintenance. Utility Model Content

[0004] In view of this, the utility model aims to provide a dustproof deep groove ball bearing to solve the problem that the existing deep groove ball bearing sealing ring is inconvenient to use and maintain.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A dustproof deep groove ball bearing comprises an inner ring and an outer ring, a retaining frame and a plurality of rolling bodies distributed on the retaining frame are arranged between the inner ring and the outer ring, and a dustproof component for shielding the retaining frame and the rolling bodies is also arranged between the inner ring and the outer ring; the dustproof component comprises a sealing ring and a spring ring, a recessed portion for accommodating the spring ring is arranged on the side of the sealing ring facing the outer ring, and a sealing portion is arranged on the side of the sealing ring facing the inner ring; an assembly groove cooperating with the recessed portion is arranged on the outer ring, and a sealing groove cooperating with the sealing portion is arranged on the inner ring; one end of the recessed portion is connected to the sealing portion, and the other end is provided with a bending portion, the cross-section of the bending portion is V-shaped, and the opening of the bending portion is arranged toward the outer ring, a positioning groove cooperating with the end of the bending portion is arranged on the outer ring, one end of the bending portion is connected to the recessed portion, and the other end is inserted into the positioning groove.

[0007] Furthermore, the cross-section of the recessed portion is U-shaped or C-shaped, and the opening of the recessed portion is arranged toward the outside of the bearing.

[0008] Furthermore, the assembly groove and the sealing groove are both provided with a rib on the side close to the steel ball, and are both provided with an inclined surface for facilitating the installation of a sealing ring on the side away from the steel ball.

[0009] Furthermore, the sealing portion is arranged parallel to the inclined surface of the sealing groove, and a first sealing lip and a second sealing lip are arranged on the sealing portion at intervals, one end of the first sealing lip is arranged on the sealing portion, and the other end is against the inclined surface of the sealing groove, and one end of the second sealing lip is arranged on the sealing portion, and the other end is against the bottom surface of the sealing groove.

[0010] Furthermore, the first sealing lip and the second sealing lip are both made of rubber material.

[0011] Furthermore, the sealing ring includes a frame and a rubber layer covering the outer side of the frame.

[0012] Furthermore, the frame is made of spring steel.

[0013] Furthermore, a protrusion is provided at one end of the bending portion extending into the positioning groove, and a groove matching with the protrusion is provided at a position corresponding to the positioning groove on the outer ring, and the groove is connected to the positioning groove.

[0014] Furthermore, the spring ring is made of rubber material.

[0015] Compared with the prior art, the dustproof deep groove ball bearing described in the utility model has the following advantages:

[0016] The dustproof deep groove ball bearing described in the utility model has the advantages of simple structure, easy assembly and maintenance, and good dustproof performance. By arranging a recessed portion and a bent portion on the sealing ring, and using the bent portion to cooperate with the positioning groove of the outer ring, not only can the sealing ring be fixed once, but also the elastic deformation of the bent portion can drive the recessed portion to undergo elastic deformation, so that the recessed portion can cooperate well with the assembly groove to achieve sealing, and under the reset elastic force of the spring ring in the recessed portion, the recessed portion can also play a secondary limit fixation on the sealing ring. By using a two-stage structure to fix the sealing ring, it is helpful to reduce the possibility of the sealing ring falling off when the bearing is used for a long time, and ensure that the sealing ring can continuously and stably play a good dustproof role on the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic structural diagram of a dustproof deep groove ball bearing according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the outer ring of a dustproof deep groove ball bearing according to an embodiment of the utility model;

[0020] Figure 3 This is a schematic structural diagram of an inner ring of a dustproof deep groove ball bearing according to an embodiment of the utility model;

[0021] Figure 4 The present invention is a schematic structural diagram of a sealing ring in a dustproof deep groove ball bearing according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Outer ring; 2. Inner ring; 3. Rolling element; 4. Sealing ring; 5. Spring ring; 6. Cage; 7. Assembly groove; 8. Positioning groove; 9. Groove; 10. Sealing groove; 11. Skeleton; 12. Rubber layer; 13. Sealing part; 14. First sealing lip; 15. Second sealing lip; 16. Recessed part; 17. Bend part; 18. Protrusion. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0028] A dustproof deep groove ball bearing, such as Figures 1 to 4 As shown, it includes an inner ring 2 and an outer ring 1, a retaining frame 6 and a plurality of rolling bodies 3 distributed on the retaining frame 6 are arranged between the inner ring 2 and the outer ring 1, and a dustproof component for shielding the retaining frame 6 and the rolling bodies 3 is also arranged between the inner ring 2 and the outer ring 1.

[0029] The above-mentioned dustproof component includes a sealing ring 4 and a spring ring 5. The sealing ring 4 is provided with a recessed portion 16 for accommodating the spring ring 5 on the side facing the outer ring 1, and a sealing portion 13 is provided on the side facing the inner ring 2; the outer ring 1 is provided with an assembly groove 7 that cooperates with the recessed portion 16, and the inner ring 2 is provided with a sealing groove 10 that cooperates with the sealing portion 13; one end of the recessed portion 16 is connected to the sealing portion 13, and the other end is provided with a bending portion 17, the cross-section of the bending portion 17 is V-shaped, and the opening of the bending portion 17 is arranged toward the outer ring 1, and the outer ring 1 is provided with a positioning groove 8 that cooperates with the end of the bending portion 17, one end of the bending portion 17 is connected to the recessed portion 16, and the other end is inserted into the positioning groove 8.

[0030] Optionally, the cross section of the recessed portion 16 is U-shaped or C-shaped, and the opening of the recessed portion 16 is arranged toward the outside of the bearing. Exemplarily, by arranging the opening of the recessed portion 16 toward the outside of the bearing, it is convenient to install the sealing ring 4 and the spring ring 5 when assembling the bearing.

[0031] In actual application, by using the U-shaped or C-shaped recessed portion 16, the recessed portion 16 can not only cooperate with the spring ring 5 to achieve the installation and position limiting of the spring ring 5, but also the U-shaped or C-shaped recessed portion 16 itself has good elastic deformation ability, and can more stably cooperate with the assembly groove 7 on the outer ring 1, which is conducive to improving the stability and reliability of the sealing ring 4 on the bearing. Among them, the spring ring 5 can also serve as an internal support, which plays a good supporting and limiting role for the recessed portion 16. Under the dual effects of the resetting elastic force of the spring ring 5 and the resetting elastic force of the recessed portion 16 itself, the recessed portion 16 can be more stably fitted with the outer ring 1 to achieve a sealing effect, which is conducive to reducing the possibility of the sealing ring 4 falling off when the bearing is used for a long time.

[0032] Optionally, the side of the assembly groove 7 and the sealing groove 10 close to the steel ball is provided with a rib, and the side away from the steel ball is provided with an inclined surface for facilitating the installation of the sealing ring 4. By providing the rib, the rib can play a good role in limiting the support of the sealing ring 4. By providing the inclined surface, it is convenient to install the sealing ring 4, and the inclined surface can also cooperate with the bending portion 17 to avoid blocking or limiting the bending portion 17, which is conducive to improving the stability of the cooperation between the bending portion 17 and the positioning groove 8.

[0033] Optionally, the sealing portion 13 is arranged parallel to the inclined surface of the sealing groove 10, and a first sealing lip 14 and a second sealing lip 15 are arranged on the sealing portion 13 at intervals, one end of the first sealing lip 14 is arranged on the sealing portion 13, and the other end is against the inclined surface of the sealing groove 10, and one end of the second sealing lip 15 is arranged on the sealing portion 13, and the other end is against the bottom surface of the sealing groove 10.

[0034] Exemplarily, the first sealing lip 14 and the second sealing lip 15 are both made of rubber material. By providing the first sealing lip 14 and the second sealing lip 15 and making them of rubber material, a double contact seal can be formed on the inner side of the inner ring 2, which is beneficial to improve the sealing effect here.

[0035] In actual application, the cross-section of the first sealing lip 14 and the second sealing lip 15 can be set in an eight-shaped shape, and the first sealing lip 14 and the second sealing lip 15 can also have good elastic deformation performance. After the sealing ring 4 is installed, the curved part of the recessed part 16 can also support the inner side of the outer ring 1, and the first sealing lip 14 and the second sealing lip 15 can form a stable contact seal with the inner ring 2 under the drive of the recessed part 16, which is conducive to further improving the dustproof sealing effect of the sealing ring 4.

[0036] Optionally, the sealing ring 4 includes a frame 11 and a rubber layer 12 coated on the outside of the frame 11. The provision of the frame 11 is conducive to improving the overall structural strength and reliability of the sealing ring 4 and extending the service life of the sealing ring 4. The rubber layer 12 coated on the outside of the frame 11 is also conducive to preventing the frame 11 from rusting and damage, further improving the reliability of the sealing ring 4. In addition, when the sealing ring 4 is installed in place, the rubber layer 12 can also play a good dustproof sealing effect.

[0037] In actual application, the frame 11 is made of spring steel. By using spring steel to make the frame 11, the frame 11 can have better elastic deformation performance, thereby ensuring that the recessed portion 16 and the bent portion 17 can stably generate a restoring elastic force, and then the sealing ring 4 can be stably installed on the bearing under the joint action of the recessed portion 16 and the bent portion 17, thereby improving the stability of the sealing ring 4 when installed on the bearing. In addition, the restoring elastic force generated by the recessed portion 16 can also drive the sealing portion 13 to better cooperate with the inner ring 2, thereby realizing a dustproof seal at the inner ring 2.

[0038] Optionally, a protrusion 18 is provided at one end of the bending portion 17 extending into the positioning groove 8, and a groove 9 cooperating with the protrusion 18 is provided at a position corresponding to the positioning groove 8 on the outer ring 1, and the groove 9 is connected to the positioning groove 8. By providing the protrusion 18 and utilizing the cooperation between the protrusion 18 and the groove 9, it is beneficial to improve the stability of the bending portion 17 inserted into the positioning groove 8, and prevent the bending portion 17 from accidentally falling out of the positioning groove 8.

[0039] Optionally, the spring ring 5 is made of rubber material. By making the spring ring 5 of rubber material, it can be ensured that the spring ring 5 has good elastic deformation ability, so that the recessed portion 16 can be stably installed in the assembly groove 7 under the action of the spring ring 5.

[0040] In actual application, the sealing ring 4 can be replaced by the following method:

[0041] During installation, the spring ring 5 can be placed in the recessed portion 16 of the sealing ring 4, and then the sealing ring 4 can be installed between the outer ring 1 and the inner ring 2, and the recessed portion 16 can be inserted into the assembly groove 7 of the outer ring 1, and the sealing portion 13 can be inserted into the sealing groove 10 of the inner ring 2; then the operator can manually or use a tool to squeeze the bending portion 17 until the end of the bending portion 17 is inserted into the positioning groove 8 of the outer ring 1, which is easy to operate. At this time, the sealing ring 4 can be stably installed on the bearing under the limiting effect of the recessed portion 16 and the bending portion 17, and it is not easy to fall off. On the contrary, during disassembly, the operator can manually or use a tool to squeeze the bending portion 17 until the end of the bending portion 17 moves out of the positioning groove 8, and under the action of the reset elastic force of the bending portion 17, the bending portion 17 can pop out, and the operator can then use pliers or other tools to pull out the sealing ring 4 as a whole, which is easy to operate.

[0042] The dustproof deep groove ball bearing described in the utility model has the advantages of simple structure, easy assembly and maintenance, and good dustproof performance. By arranging a recessed portion and a bent portion on the sealing ring, and using the bent portion to cooperate with the positioning groove of the outer ring, not only can the sealing ring be fixed once, but also the elastic deformation of the bent portion can drive the recessed portion to undergo elastic deformation, so that the recessed portion can cooperate well with the assembly groove to achieve sealing, and under the reset elastic force of the spring ring in the recessed portion, the recessed portion can also play a secondary limit fixation on the sealing ring. By using a two-stage structure to fix the sealing ring, it is helpful to reduce the possibility of the sealing ring falling off when the bearing is used for a long time, and ensure that the sealing ring can continuously and stably play a good dustproof role on the bearing.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dustproof deep groove ball bearing, comprising an inner ring (2) and an outer ring (1), a retainer (6) and a plurality of rolling elements (3) distributed on the retainer (6) are arranged between the inner ring (2) and the outer ring (1), and a dustproof component for shielding the retainer (6) and the rolling elements (3) is also arranged between the inner ring (2) and the outer ring (1), characterized in that: The dustproof assembly comprises a sealing ring (4) and a spring ring (5); a recessed portion (16) for accommodating the spring ring (5) is provided on the side of the sealing ring (4) facing the outer ring (1), and a sealing portion (13) is provided on the side of the sealing ring (4) facing the inner ring (2); a mounting groove (7) cooperating with the recessed portion (16) is provided on the outer ring (1), and a sealing groove (10) cooperating with the sealing portion (13) is provided on the inner ring (2); one end of the recessed portion (16) is connected to the sealing portion (13), and the other end is provided with a bending portion (17); the cross section of the bending portion (17) is V-shaped, and the opening of the bending portion (17) is arranged toward the outer ring (1); the outer ring (1) is provided with a positioning groove (8) cooperating with the end of the bending portion (17); one end of the bending portion (17) is connected to the recessed portion (16), and the other end is inserted into the positioning groove (8).

2. A dustproof deep groove ball bearing according to claim 1, characterized in that: The cross section of the recessed portion (16) is U-shaped or C-shaped, and the opening of the recessed portion (16) is arranged toward the outside of the bearing.

3. The dustproof deep groove ball bearing according to claim 1, characterized in that: The assembly groove (7) and the sealing groove (10) are both provided with a rib on the side close to the steel ball, and are both provided with an inclined surface on the side away from the steel ball for facilitating the installation of the sealing ring (4).

4. A dustproof deep groove ball bearing according to claim 3, characterized in that: The sealing portion (13) is arranged parallel to the inclined surface of the sealing groove (10); a first sealing lip (14) and a second sealing lip (15) are arranged on the sealing portion (13) at intervals; one end of the first sealing lip (14) is arranged on the sealing portion (13) and the other end is pressed against the inclined surface of the sealing groove (10); one end of the second sealing lip (15) is arranged on the sealing portion (13) and the other end is pressed against the bottom surface of the sealing groove (10).

5. A dustproof deep groove ball bearing according to claim 4, characterized in that: The first sealing lip (14) and the second sealing lip (15) are both made of rubber material.

6. The dustproof deep groove ball bearing according to claim 1, characterized in that: The sealing ring (4) comprises a frame (11) and a rubber layer (12) covering the outer side of the frame (11).

7. A dustproof deep groove ball bearing according to claim 6, characterized in that: The frame (11) is made of spring steel.

8. The dustproof deep groove ball bearing according to claim 1, characterized in that: A protrusion (18) is provided at one end of the bending portion (17) extending into the positioning groove (8), and a groove (9) cooperating with the protrusion (18) is provided at a position on the outer ring (1) corresponding to the positioning groove (8), and the groove (9) is communicated with the positioning groove (8).

9. The dustproof deep groove ball bearing according to claim 1, characterized in that: The spring ring (5) is made of rubber material.

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