CN215567922U

CN215567922U - Compact bearing seal structure

Info

Publication number: CN215567922U
Application number: CN202121197893.5U
Authority: CN
Inventors: 赵学海
Original assignee: Chongqing Changjiang Bearing Co Ltd
Current assignee: Chongqing Changjiang Bearing Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-01-18
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a compact bearing sealing structure which comprises an outer sealing ring and an inner sealing ring, wherein the outer sealing ring comprises a first framework and a first sealing ring body coated on the first framework, a first sealing lip is arranged on one side, close to a bearing outer ring, of the first sealing ring body, the first sealing lip is in interference fit with the inner peripheral surface of the bearing outer ring, a first dust-proof lip is arranged on one side, close to the bearing inner ring, of the first sealing ring body, and the first dust-proof lip is in interference fit with a first sealing groove in the bearing inner ring; the inner seal ring comprises a second framework and a second seal ring body coated on the second framework, a second dust lip is arranged on one side, facing the bearing outer ring, of the second seal ring body, the second dust lip is in interference fit with a second seal groove on the bearing outer ring, a flow guide lip is arranged on one side, facing the bearing inner ring, of the second seal ring body, the flow guide lip is in clearance fit with the outer peripheral face of the bearing inner ring, a seal antenna is arranged on one side, facing the first framework, of the second seal ring body, and the seal antenna is pressed on the first framework.

Description

Compact bearing seal structure

Technical Field

The utility model relates to the technical field of bearings, in particular to a compact bearing sealing structure.

Background

The rolling bearing is used in various rotating application environments, and the bearing on the automobile half shaft needs good sealing performance so as to prevent the automobile half shaft bearing from being damaged in advance due to invasion of stones, muddy water, dust and the like in the automobile driving process, so that the service life is shortened. In the prior art, an inner sealing ring and an outer sealing ring are arranged between a bearing inner ring and a bearing outer ring, the outer sealing ring and the inner sealing ring are respectively contacted with the outer peripheral wall of the bearing inner ring and the inner peripheral wall of the bearing outer ring to form sealing fit, and the invasion of stone, muddy water, dust and the like is isolated.

Disclosure of Invention

Aiming at the technical problems existing at present, the utility model provides a compact bearing sealing structure to solve the problems in the prior art.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a compact bearing sealing structure comprises an outer sealing ring and an inner sealing ring, wherein the outer sealing ring comprises a first framework and a first sealing ring body coated on the first framework, a first sealing lip is arranged on one side, close to a bearing outer ring, of the first sealing ring body, and is in interference fit with the inner peripheral surface of the bearing outer ring, a first dust-proof lip is arranged on one side, close to a bearing inner ring, of the first sealing ring body, and is in interference fit with a first sealing groove in the bearing inner ring;

the inner seal ring comprises a second framework and a second seal ring body coated on the second framework, a second dust lip is arranged on one side, facing the bearing outer ring, of the second seal ring body, and is in interference fit with a second seal groove on the bearing outer ring, a flow guide lip is arranged on one side, facing the bearing inner ring, of the second seal ring body, and is in clearance fit with the outer peripheral surface of the bearing inner ring, facing the second seal ring body, a seal feeler is arranged on one side of the first framework, and the seal feeler is pressed on the first framework.

Above-mentioned technical scheme, setting up through the outer sealing washer makes the whole sealing performance that realizes of bearing seal structure, inner peripheral surface interference fit through first seal lip and bearing inner race, the setting that sealed antenna pressed on first skeleton, sealing waterproof performance of seal structure has further been improved, simultaneously through the design of water conservancy diversion lip and with the clearance fit of bearing inner race outer peripheral face, make things convenient for the lubricating grease backward flow on the one hand, do benefit to the bearing lubrication, on the other hand has alleviateed the friction between inner seal circle and the bearing inner race, the heat production of friction has been reduced, the life of bearing has also been improved when improving sealing performance.

Preferably, the guide lip is inclined towards one side where the channel of the bearing inner ring is located.

So set up, grease can be thrown away under rotatory centrifugal force effect in the course of the work, because the water conservancy diversion lip is to channel one side slope, most is flowed back to the channel position at the in-process that throws away like this grease, and only the part can be thrown away from the clearance between water conservancy diversion lip and the bearing inner race, and the grease of throwing away is blockked by sealed feeler, prevents that the grease from spilling, has improved sealing performance.

Preferably, the number of the sealing feelers is three, and the sealing feelers are distributed along the radial direction of the bearing inner ring or the bearing outer ring.

Preferably, the sealing antenna extends obliquely to a side of the first sealing lip.

So set up, can be blockked by sealed antenna after a small amount of water gets into from between outer seal ring and the bearing inner race, further improved water-proof effects.

Compared with the prior art, the utility model has the beneficial effects that: the bearing sealing structure integrally achieves the sealing performance through the arrangement of the outer sealing ring, the sealing waterproof performance of the sealing structure is further improved through the arrangement that the first sealing lip is in interference fit with the inner circumferential surface of the bearing outer ring and the sealing feeler is pressed on the first framework, and meanwhile, through the design of the flow guide lip and the clearance fit between the flow guide lip and the outer circumferential surface of the bearing inner ring, on one hand, the backflow of lubricating grease is facilitated, the lubrication of the bearing is facilitated, on the other hand, the friction between the inner sealing ring and the bearing inner ring is reduced, the heat generated by friction is reduced, the service life of the bearing is prolonged while the sealing performance is improved, and the integral structure is simple and compact.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view at X in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The compact bearing sealing structure shown in fig. 1-fig. 2 includes a bearing inner ring 3 and a bearing outer ring 4, an outer sealing ring 1 and an inner sealing ring 2 are arranged between the bearing inner ring 3 and the bearing outer ring 4, the outer sealing ring 1 includes a first framework 11 and a first sealing ring body 12 coated on the first framework 11, a first sealing lip 13 is arranged on one side of the first sealing ring body 12 close to the bearing outer ring 4, the first sealing lip 13 is in interference fit with the inner circumferential surface of the bearing outer ring 4 in the radial direction, a first dust lip 14 is arranged on one side of the first sealing ring body 12 close to the bearing inner ring 3, and the first dust lip 14 is embedded in a first sealing groove 31 on the bearing inner ring 3 and is in interference fit with the groove wall of the first sealing groove 31.

The inner seal ring 2 comprises a second framework 21 and a second seal ring body 22 coated on the second framework 21, a second dustproof lip 23 is arranged on one side, facing the bearing outer ring 4, of the second seal ring body 22, the second dustproof lip 23 is embedded into a second seal groove 41 on the bearing outer ring 4 and is in interference fit with the groove wall of the second seal groove 41, a flow guide lip 24 is arranged on one side, facing the bearing inner ring 3, of the second seal ring body 22, the flow guide lip 24 is in clearance fit with the outer peripheral surface of the bearing inner ring 3, namely, a clearance is reserved between the flow guide lip 24 and the outer peripheral surface of the bearing inner ring 3 in the radial direction, the flow guide lip 24 inclines towards one side where a channel of the bearing inner ring 3 is located, and due to the fact that the flow guide lip 24 inclines towards one side of the channel, most of grease thrown away in the working process can flow back to the position of the rolling body under the action of the flow guide lip 24.

One side towards first skeleton 11 on second seal ring body 22 is equipped with three sealed antenna 25, three sealed antenna 25 is along the radial distribution of bearing inner race 3 or bearing outer lane 4, sealed antenna 25 presses on first skeleton 11, sealed antenna 25 extends to the one side slope at first seal lip 13 place, simultaneously from the drawing on the whole concave arc structure that is of sealed antenna 25 sets up, the setting up of sealed antenna 25 can block the water that gets into between first seal lip 13 and the bearing outer lane 4 on the one hand, prevent to get into inside the bearing, on the other hand can block the grease that flows from the clearance between water conservancy diversion lip 24 and the bearing inner race 3, avoid the grease to be thrown away, bearing leakproofness has been improved greatly.

The structure not described in this embodiment is the same as the prior art, and is not described herein.

The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a compact bearing seal structure, includes outer sealing washer (1) and interior sealing washer (2), its characterized in that: the outer sealing ring (1) comprises a first framework (11) and a first sealing ring body (12) coated on the first framework (11), a first sealing lip (13) is arranged on one side, close to the bearing outer ring (4), of the first sealing ring body (12), the first sealing lip (13) is in interference fit with the inner peripheral surface of the bearing outer ring (4), a first dust-proof lip (14) is arranged on one side, close to the bearing inner ring (3), of the first sealing ring body (12), and the first dust-proof lip (14) is in interference fit with a first sealing groove (31) in the bearing inner ring (3);

interior sealing washer (2) include second skeleton (21) and cladding second seal ring body (22) on this second skeleton (21), and second dust lip (23) are established towards one side of bearing inner race (4) in this second seal ring body (22), this second dust lip (23) and second seal groove (41) interference fit on bearing inner race (4), water conservancy diversion lip (24) are established towards one side of bearing inner race (3) in second seal ring body (22), this water conservancy diversion lip (24) with the outer peripheral face clearance fit of bearing inner race (3) towards one side of first skeleton (11) is equipped with sealed antenna (25) on second seal ring body (22), and this sealed antenna (25) press on first skeleton (11).

2. The compact bearing seal structure of claim 1, wherein: the flow guide lip (24) inclines towards one side where the channel of the bearing inner ring (3) is located.

3. The compact bearing seal structure of claim 1, wherein: the number of the sealing antennae (25) is three, and the sealing antennae are distributed along the radial direction of the bearing inner ring (3) or the bearing outer ring (4).

4. The compact bearing seal structure of claim 3, wherein: the sealing antenna (25) extends obliquely to the side where the first sealing lip (13) is located.