CN215634474U

CN215634474U - Bearing of sealing structure for promoting flow of internal grease

Info

Publication number: CN215634474U
Application number: CN202121288030.9U
Authority: CN
Inventors: 洪文彬
Original assignee: Fujian Fushan Bearing Co ltd
Current assignee: Fujian Fushan Bearing Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-01-25
Anticipated expiration: 2031-06-09

Abstract

The utility model provides a bearing of a sealing structure for promoting internal grease to flow, which comprises a curled edge framework fixedly arranged in a sealing groove of an outer ring of the bearing, and a sealing element which is attached to the inner side surface of the curled edge framework and used for sealing the outer diameter of an inner ring of the bearing; the sealing element is provided with a guide surface, the bottom surface of the sealing groove, the outer side surface of the retainer, the guide surface and the bearing inner ring form a lubricant containing cavity for containing lubricant, and two ends of the sealing element are respectively and hermetically arranged between the sealing groove and the curling framework and the outer diameter of the bearing inner ring. This application can effectively sealed bearing, prevents that the grease from leaking, promotes the lubricating property of bearing, guarantees the high-efficient operation that the bearing can be stable for a long time.

Description

Bearing of sealing structure for promoting flow of internal grease

Technical Field

The utility model relates to the technical field of bearing sealing, in particular to a bearing with a sealing structure for promoting internal grease to flow.

Background

At present, most of seals of the bearing curled edge rubber hanging covers on the market are single-layer sealing lips, the seals are in direct contact with the external environment, and foreign matters such as external dust and particles cannot enter the inside of the bearing; meanwhile, when the bearing runs and grease impacts the sealing lip of the single-layer curled-edge rubber hanging cover, the single-layer lip structure cannot effectively prevent the grease from leaking, and the grease lubricating performance in the bearing is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bearing with a sealing structure for promoting the flow of internal grease, which solves the technical problems, effectively prevents lubricating oil from leaking and obviously improves the lubricating performance of the bearing.

The utility model provides a bearing of a sealing structure for promoting internal grease to flow, which comprises a curled edge framework fixedly arranged in a sealing groove of an outer ring of the bearing, and a sealing element which is attached to the inner side surface of the curled edge framework and used for sealing the outer diameter of an inner ring of the bearing; the sealing element is provided with a guide surface, the bottom surface of the sealing groove, the outer side surface of the retainer, the guide surface and the bearing inner ring form a lubricant containing cavity for containing lubricant, and two ends of the sealing element are respectively and hermetically arranged between the sealing groove and the curling framework and the outer diameter of the bearing inner ring.

Preferably, the turn-up skeleton includes J type joint portion and the Z type installation department of looks rigid coupling, J type joint portion clamps in the seal groove of bearing inner race, the sealing member paste lean on in the side of Z type installation department.

Preferably, the sealing element is a rubber element or a silicone element.

Preferably, the sealing element comprises a body, an upper sealing piece for being sealed between the sealing groove and the retainer in an interference manner, and two lower sealing support legs for being sealed on the outer diameter of the inner ring in an interference manner, the body is arranged between the upper sealing piece and the two lower sealing support legs, and the guide surface is formed by the upper sealing piece, the body and the side surface of the lower sealing support leg close to one side of the retainer.

Preferably, one side of the body facing the crimping framework is provided with an elastic expansion groove.

Preferably, the elastic expansion groove is an open groove.

Preferably, the crimping framework is fixedly adhered to the sealing element.

The bearing of the sealing structure for promoting the flow of the internal grease provided by the utility model has the following technical advantages:

1. the direct contact between the interior of the bearing and the external environment is avoided, foreign matters such as external dust and the like are effectively prevented from invading the interior of the bearing, grease leakage in high-speed operation is prevented, full lubrication of balls and channels is ensured, and the long-term stable and efficient operation of the bearing is ensured;

2. a specific sealing lip structure on the back of the sealing element is sealed with the bottom of the sealing groove, so that grease is prevented from leaking out from a gap between the turned edge of the turned edge rubber hanging cover and the sealing groove, and the inside of the bearing is further ensured to be fully lubricated;

3. the turned edge framework is riveted on the bearing, the sealing element is provided with a guide surface, and when the bearing rotates, grease in the bearing is effectively promoted to flow to the positions of the balls and the grooves, so that the balls and the grooves of the bearing can be fully lubricated, and the bearing can be stably and efficiently operated for a long time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of a bearing with internal grease flow-promoting sealing features provided in accordance with the present invention;

FIG. 2 is a schematic view of a bearing of the internal grease flow-promoting sealing structure of the present invention in an installed condition.

Wherein, 1-bearing, 2-crimping frame, 3-sealing element, 4-retainer; 11-bearing outer ring, 12-bearing inner ring, 13-sealing groove, 21-J type clamping part, 22-Z type mounting part, 31-upper sealing sheet, 32-body, 33-lower sealing support leg and 34-elastic expansion groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, fig. 1 is a schematic view of a bearing with an internal grease flow-promoting sealing structure according to the present invention; FIG. 2 is a schematic view of a bearing of the internal grease flow-promoting sealing structure of the present invention in an installed condition.

The utility model provides a bearing of a sealing structure for promoting internal grease to flow, which mainly comprises a curled edge framework 2 and a sealing element 3, wherein a curled edge structure of the curled edge framework 2 is fixed in a sealing groove 13 of a bearing outer ring 11, the other end, far away from the curled edge structure, of the curled edge framework 2 is attached to the outer diameter of a bearing inner ring 12, the sealing element 3 is fixedly connected with the curled edge framework 2, the upper end of the sealing element 3 is clamped between the sealing groove 13 and the curled edge structure of the curled edge framework 2, the outer side surface of the sealing element 3 is attached to the inner side surface of the curled edge framework 2, and the lower end of the sealing element 3 is elastically sealed to the outer diameter of the bearing inner ring 12. The seal 3 is provided with a guide surface provided on an inner surface of the seal 3 facing the balls, a bottom surface of the seal groove 13, an outer surface of the cage, and the guide surface constitute a lubricant accommodating chamber for accommodating a lubricant, and both ends of the seal 3 are sealingly attached between the seal groove 13 and the bead frame 2 and to an outer diameter of the bearing inner ring 12.

The novel turned edge rubber hanging cover for the bearing adopts a double-layer sealing structure, can effectively avoid the direct contact of the bearing and the external environment, improves the integral sealing performance of the bearing and prevents internal grease from leaking; the design of the grease guide surface can guide grease to flow in the bearing when the bearing rotates, so that the lubricating performance of the bearing is ensured.

In an embodiment, the curling framework 2 comprises a J-shaped clamping portion 21 and a Z-shaped mounting portion 22 which are fixedly connected, the J-shaped clamping portion 21 is clamped in the sealing groove 13 of the bearing outer ring 11, the sealing member 3 abuts against the side surface of the Z-shaped mounting portion 22, the curling framework 2 is of an integrated structure, the curling framework 2 should have certain strength, the curling framework 2 is preferably a steel curling framework, and the curling framework 2 is integrally formed.

The sealing element 3 comprises a body 32, an upper sealing piece 31 and two lower sealing legs 33, wherein the upper sealing piece 31 is of a sheet or columnar structure, the sealing element 3 is integrally riveted in the sealing groove 13, and the upper sealing piece 31 is in interference sealing between the sealing groove 13 and the J-shaped clamping portion 21. Two sealed stabilizer blades 33 of lower part are "people" style of calligraphy structure, and both each other become certain contained angle and distribute, and the sealed stabilizer blade 33 of lower part interference seal is in the inner circle external diameter, and body 32 is located between upper portion sealing fin 31 and two sealed stabilizer blades 33 of lower part, and sealing member 3 is through injection moulding integrated into one piece. The guide surface is constituted by the side surfaces of the upper seal fin 31, the body 32, and the lower seal leg 33 on the side close to the holder.

In this embodiment, the outer diameter of the bearing inner race 12 is sealed in a double-layer manner by the two lower sealing legs 33 having the herringbone structure, and the elastic deformability is improved. Specifically, the lower seal leg 33 of the two legs on the side close to the cage 4 and the balls has an effect of sealing the inside, preventing the grease from leaking; the lower sealing leg 33 near the side of the hemming frame 2 has an effect of sealing the outside, effectively preventing foreign materials from entering the inside of the bearing. When one of the supporting feet fails to seal, the other supporting foot can still keep the sealing effect, and the sealing performance is better.

In this embodiment, back formula seal lip structure for after crimping skeleton 2 riveting advances seal groove 13, riveting advances the groove after, upper portion gasket 31 carries out interference formula contact seal with seal groove 13 bottom, prevents that grease from revealing to the outside from seal groove 13, effectively prevents that grease from leaking promptly, guarantees the inside lubrication of bearing.

Further, in order to increase the application range, an elastic expansion groove 34 may be disposed on one side of the body 32 facing the hemming framework 2, the elastic expansion groove 34 is an open groove, and specifically may be a trapezoidal groove, a square hole, an arc groove, and the like, and the elastic expansion groove 34 may also be disposed in the middle or the side of the body 32 (as shown in fig. 2), so as to increase the elastic deformation during assembly and use, and improve the sealing performance. The sealing member 3 should be made of soft material, and may be a rubber member or a silicone member.

The crimping frame 2 and the sealing member 3 may be fixed by adhesion, snap-fit, or by a locking member, for example, and may be bonded to the frame 2 by vulcanization.

The bearing of the sealing structure for promoting the internal grease flow provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The bearing of the sealing structure for promoting the flow of the internal grease is characterized by comprising a curled edge framework (2) fixedly arranged in a sealing groove (13) of a bearing outer ring (11), and a sealing element (3) which is attached to the inner side surface of the curled edge framework (2) and is used for sealing the outer diameter of a bearing inner ring (12); the sealing element (3) is provided with a guide surface, the bottom surface of the sealing groove (13), the outer side surface of the retainer (4), the guide surface and the bearing inner ring (12) form a lubricant containing cavity for containing lubricant, and two ends of the sealing element (3) are respectively and hermetically mounted between the sealing groove (13) and the hemming framework (2) and the outer diameter of the bearing inner ring (12).

2. The bearing of the internal grease flow sealing structure, according to claim 1, characterized in that the curled rim skeleton (2) includes a J-shaped clamping portion (21) and a Z-shaped mounting portion (22) that are fixedly connected, the J-shaped clamping portion (21) is clamped in the sealing groove (13) of the bearing outer ring (11), and the sealing element (3) is attached to the side surface of the Z-shaped mounting portion (22).

3. Bearing of an internal grease flow promoting sealing structure according to claim 1, characterized in that the sealing element (3) is embodied as a rubber or silicone element.

4. A bearing of an internal grease flow promoting sealing structure according to any one of claims 1 to 3, characterized in that the sealing member (3) comprises a body (32), an upper seal piece (31) for interference sealing between the seal groove (13) and the cage (4), and two lower seal legs (33) for interference sealing on the outer diameter of the inner ring, the body (32) is provided between the upper seal piece (31) and the two lower seal legs (33), and the guide surface is constituted by the upper seal piece (31), the body (32), and the side surfaces of the lower seal legs (33) on the side close to the cage.

5. Bearing of an internal grease flow promoting sealing structure according to claim 4, characterized in that the side of the body (32) facing the crimping skeleton (2) is provided with an elastic expansion groove (34).

6. A bearing of an internal grease flow promoting sealing structure according to claim 5, characterized in that the elastically expanding groove (34) is an open groove.

7. The bearing of the internal grease flow sealing structure promoted according to claim 1, characterized in that the crimping frame (2) is fixedly adhered to the sealing member (3).