CN213684992U

CN213684992U - Sealing washer and dustproof leak protection fat seal structure

Info

Publication number: CN213684992U
Application number: CN202021206355.3U
Authority: CN
Inventors: 顾峰柏
Original assignee: Wuxi Bokai Light Bearing Co ltd
Current assignee: Wuxi Bokai Light Bearing Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-07-13
Anticipated expiration: 2030-06-28

Abstract

The utility model provides a sealing ring and a dustproof and grease-leakage-proof sealing structure, wherein a sealing ring main body comprises an annular substrate framework, and the section of the annular substrate framework comprises an L-shaped part and a bevel edge extension part; the sealing lip is arranged on the outer side surface of the annular substrate framework, the part of the sealing lip, which exceeds the extension part of the bevel edge, is an inward-turned bevel edge, and the outer side surface of the sealing lip extends outwards to form an upwards-inclined branch lip; the dustproof cover is arranged on the bearing inner ring in an interference manner, the sealing ring is arranged on the bearing outer ring in an interference manner, and the bent edge and the branch lip of the sealing ring form point contact with the dustproof cover; adopt composite seal, have small clearance between sealing washer and the shield, tentatively prevent that impurity from getting into inside the bearing, and constitute two point contact between sealing washer and the shield, play the effect that prevents inside grease and spill and outside impurity and get into, improve sealed effect, reach best sealed effect and minimum starting torque through A some magnitude of interference, better satisfy bearing service behavior.

Description

Sealing washer and dustproof leak protection fat seal structure

Technical Field

The utility model belongs to bearing seal component structure field especially relates to a sealing washer and contain dustproof leak protection fat seal structure of this sealing washer.

Background

The bearing sealing element is a ball bearing sealing ring, is matched with an inner ring and an inner diameter in a groove, is a resistance factor of vehicle power rolling, is a sealing element which must be used under the generated friction and dust-proof effects, and is generally used in the fields of automobile water pumps, industrial water pumps, agricultural machinery and the like.

The bearing sealing element is arranged in a dustproof groove of a bearing outer ring of mechanical equipment so as to realize the functions of external dust prevention and internal oil leakage prevention.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sealing washer and dustproof leak protection fat seal structure realizes dustproof, the effect of leak protection oil, and is sealed effectual, the utility model discloses a following technical scheme realizes: a sealing ring comprises a sealing ring main body and a sealing ring main body, wherein the sealing ring main body comprises an annular substrate framework, and the section of the annular substrate framework comprises an L-shaped part and a bevel edge extension part; the sealing lip sets up in the lateral surface of cyclic annular matrix skeleton, and the sealing lip surpasss the hypotenuse extension partial part and is divided into the dog-ear limit of enstrophe, the lateral surface of sealing lip outwards extends the branch lip of tilt up.

Preferably, the extension of the branch lip intersects the hypotenuse extension.

A dustproof and grease-leakage-proof sealing structure comprises the sealing ring main body and a dustproof cover, wherein the dustproof cover is arranged on an inner ring of a bearing in an interference manner, the sealing ring main body is arranged on an outer ring of the bearing in an interference manner,

the corner edge and the branch lip of the sealing ring main body form point contact with the dust cover.

Preferably, the dust cap has a small gap with the end of the L-shaped portion of the annular substrate frame, and the branch lip is located on the side close to the small gap.

The utility model has the advantages that: adopt composite seal, have small clearance between sealing washer and the shield, tentatively prevent that impurity from getting into inside the bearing, and constitute two point contact between sealing washer and the shield, play the effect that prevents inside grease and spill and outside impurity and get into, improve sealed effect, reach best sealed effect and minimum starting torque through A some magnitude of interference, better satisfy bearing service behavior.

Drawings

FIG. 1 is a schematic cross-sectional structure of a seal ring according to the present application;

FIG. 2 is a schematic cross-sectional view of the dustproof and grease-leakage-proof sealing structure of the present patent;

1. the sealing ring comprises a sealing ring main body, 101, an annular substrate framework, 1011, an L-shaped part, 1012, a bevel edge extension part, 102, a sealing lip, 1021, a bevel edge, 103 and a branch lip;

2. a dust cover; 3. a bearing inner race; 4. and (4) a bearing outer ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In fig. 1, a sealing ring body 1 comprises an annular substrate framework 101, wherein the section of the annular substrate framework 101 comprises an L-shaped part 1011 and a bevel edge extension part 1012; the sealing lip 102 is arranged on the outer side surface of the annular substrate framework 101, the part of the sealing lip 102, which exceeds the extension part 1012 of the bevel edge, is an inward-turned bevel edge 1021, and the outer side surface of the sealing lip 102 extends outwards to form a branch lip 103 which inclines upwards.

Preferably, the extension of the branch lip 103 intersects the hypotenuse extension 1012 to provide a weighted support of the branch lip 103.

Fig. 2 shows, a dustproof leak protection fat seal structure, contains above-mentioned sealing washer main part 1, shield 2 interference mounting is on bearing inner race 3, sealing washer main part 1 interference mounting is on bearing inner race 4, the dog-ear limit 1021, the branch lip 103 of sealing washer main part 1 with constitute the point contact between the shield 2, the correspondence that fig. 2 shows is C, A two point contacts, and the C point prevents that the inside grease of bearing outwards spills, and the A point prevents that inside grease from spilling and outside impurity from getting into.

Preferably, the dust cap 2 has a small gap B with the end of the L-shaped part 1011 of the annular substrate framework 101, so as to prevent external impurities from entering the inside of the bearing preliminarily; the branch lip 103 is close to the small gap side.

This patent application adopts composite seal, has small clearance between sealing washer and the shield, tentatively prevents that impurity from getting into inside the bearing, and constitutes two point contact between sealing washer and the shield, plays the effect that prevents that inside grease from spilling and outside impurity from getting into, improves sealed effect, reaches best sealed effect and minimum starting torque through A point magnitude of interference, better satisfies the bearing and uses operating mode.

Finally, it should be noted that: the above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the spirit and scope of the invention.

Claims

1. A seal ring, characterized in that: the sealing ring main body (1) comprises an annular substrate framework (101), and the cross section of the annular substrate framework (101) comprises an L-shaped part (1011) and a bevel edge extension part (1012); the sealing device comprises a sealing lip (102), wherein the sealing lip (102) is arranged on the outer side surface of the annular substrate framework (101), the part, exceeding the extension part (1012) of the inclined edge, of the sealing lip (102) is an inward-turned folded edge (1021), and the outer side surface of the sealing lip (102) outwards extends to form a branch lip (103) which inclines upwards.

2. A seal ring according to claim 1, wherein: the extension line of the branch lip (103) intersects with the section of the bevel extension part (1012).

3. The utility model provides a dustproof leak protection fat seal structure which characterized in that: including sealing washer main part (1), shield (2) interference mounting is on bearing inner race (3), sealing washer main part (1) interference mounting is on bearing inner race (4), dog-ear limit (1021), branch lip (103) of sealing washer main part (1) and constitute the point contact between shield (2).

4. The dustproof grease leakage prevention sealing structure according to claim 3, characterized in that: the dust cover (2) has a small gap with the end of the L-shaped part (1011) of the annular substrate framework (101), and the branch lip (103) is close to one side of the small gap.