CN213451688U

CN213451688U - Novel combined sealing structure

Info

Publication number: CN213451688U
Application number: CN202022608484.1U
Authority: CN
Inventors: 陈军; 秦川川; 侯楠; 吕文静; 张运涛
Original assignee: Luoyang Lyc Automobile Bearing Technology Co Ltd
Current assignee: Luoyang Lyc Automobile Bearing Technology Co Ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-06-15
Anticipated expiration: 2030-11-12

Abstract

The utility model introduces a novel combined sealing structure, which comprises an inner framework, an outer framework and a rubber sealing ring; the sections of the inner framework and the outer framework are L-shaped, and the inner framework and the outer framework are symmetrically arranged and are mutually buckled to form a rectangular structure of an internal cavity; the rubber sealing ring is coated on the L-shaped vertical folded edge of the inner framework, and an axial sealing lip, a radial sealing lip and a two-way sealing lip extend out of the rubber sealing ring in the cavity of the rectangular structure; the outer framework is provided with an arc-shaped groove at the L-shaped bent part; the end part of the bidirectional sealing lip is arranged in the circular arc-shaped groove of the outer framework, and the two are in clearance fit connection. This structural design is novel, safe and reliable, and the convex recess and the two-way seal lip clearance fit of outer skeleton department of buckling have reduced the area of contact of seal lip and skeleton, under same sealing performance, have reduced the friction torque that the sealing washer produced for the wearing and tearing speed of sealing washer slows down, has improved the life of bearing.

Description

Novel combined sealing structure

Technical Field

The utility model belongs to the technical field of the bearing seal circle, concretely relates to reduce friction torque's novel combined seal structure under the prerequisite of guaranteeing bearing sealing performance.

Background

At present, the known combined sealing structure is composed of a framework, three rubber sealing lips and grease, wherein the three rubber sealing lips generally comprise an axial sealing lip and two radial sealing lips or two axial sealing lips and one radial sealing lip, and the sealing lips are connected with the framework in an interference fit manner. When the bearing works, the requirement on the friction torque of the bearing is higher and higher, the sealing ring is a main part for generating the friction torque, and the sealing lip is in interference fit with the framework, so that the contact force is larger, the generated friction torque is larger, the abrasion of the sealing ring is too fast, the sealing performance of the bearing is influenced, and the service life of the bearing is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel combined sealing structure, the rubber seal lip of this structure is a radially, an axial and a two-way seal lip, and at the convex recess of the department of buckling of skeleton processing, during free state, the two-way seal lip is clearance fit with convex recess, reduces the area of contact of seal lip and skeleton to reduce friction torque, the two-way seal lip is radial or during the axial atress, all can paste tightly with the skeleton fitting surface, prevent its displacement, guarantee with the same sealed effect of traditional structure.

The purpose of the utility model can be realized by adopting the following technical scheme: a novel combined sealing structure comprises an inner framework, an outer framework and a rubber sealing ring; the sections of the inner framework and the outer framework are both L-shaped, the inner framework and the outer framework are symmetrically arranged and are mutually buckled to form a rectangular structure with a cavity inside; the rubber sealing ring is coated on the L-shaped vertical folded edge of the inner framework, and an axial sealing lip, a radial sealing lip and a bidirectional sealing lip extend out of a cavity of a rectangular structure formed by the inner framework and the outer framework; the outer framework is provided with an arc-shaped groove connected with the bidirectional sealing lip at the L-shaped bent part; the end part of the axial sealing lip is obliquely arranged on the L-shaped horizontal folded edge of the outer framework and is connected with the outer framework in an interference fit manner; the end part of the radial sealing lip is obliquely arranged on the L-shaped vertical folded edge of the outer framework, and the radial sealing lip and the L-shaped vertical folded edge are connected in an interference fit manner; the end part of the bidirectional sealing lip is arranged in the arc-shaped groove at the L-shaped bent part of the outer framework, and the two are in clearance fit connection.

A layer of rubber sealing ring is attached to the inner wall and the upper edge of the L-shaped horizontal folded edge of the inner framework and is connected with the rubber sealing ring coated by the L-shaped vertical folded edge of the inner framework into a whole.

The size of the circular arc groove at the L-shaped bent part of the outer framework is matched with the size of the end part of the bidirectional sealing lip.

When the utility model is used, when grease in the bearing leaks to one side of the radial sealing lip, the two-way sealing lip is slightly deformed under the extrusion of the grease, and the tail end of the two-way sealing lip is tightly attached to the radial matching surface of the arc-shaped groove of the outer framework, so that the two-way sealing lip cannot be deformed continuously due to physical limitation, and the sealing effect is achieved; when external foreign matters enter the sealing ring of the bearing to enable the axial sealing lip to lose efficacy, the bidirectional sealing lip is slightly deformed by the extrusion of the foreign matters, and the tail end of the bidirectional sealing lip is tightly attached to the axial matching surface of the arc-shaped groove of the outer framework, so that the bidirectional sealing lip cannot be continuously deformed due to physical limitation, the sealing effect is achieved, the contact area between the rubber sealing lip and the framework is reduced under the same sealing performance, and the friction torque generated by the sealing ring is reduced.

The utility model has the advantages that: this structural design is novel, safe and reliable, and the convex recess and the two-way seal lip clearance fit of outer skeleton department of buckling have reduced the area of contact of seal lip and outer skeleton, under same sealing performance, have reduced the friction torque that the sealing washer produced by a wide margin for the wearing and tearing speed of sealing washer reduces, has improved the life of bearing.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the exoskeleton of the present invention;

FIG. 3 is an enlarged schematic view of the fitting portion between the two-way sealing lip and the exoskeleton of the present invention;

the labels in the figure are: 1. the sealing device comprises an inner framework, a second outer framework, a third outer framework, a fourth outer framework, a fifth outer framework, a sixth outer framework.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, a novel combined sealing structure comprises an inner frame 1, an outer frame 2 and a rubber sealing ring 3; the sections of the inner framework 1 and the outer framework 2 are both L-shaped, the inner framework 1 and the outer framework 2 are symmetrically arranged and are buckled with each other to form a rectangular structure with a cavity inside; the rubber sealing ring 3 is coated on the L-shaped vertical folded edge of the inner framework 1, and an axial sealing lip 4, a radial sealing lip 5 and a bidirectional sealing lip 6 extend out of a cavity of a rectangular structure formed by the inner framework 1 and the outer framework 2 of the rubber sealing ring 3; a layer of rubber sealing ring 3 is attached to the inner wall and the upper edge of the L-shaped horizontal folded edge of the inner framework 1 and is connected with the rubber sealing ring 3 coated by the L-shaped vertical folded edge of the inner framework 1 into a whole; the outer framework 2 is provided with an arc-shaped groove 7 connected with the bidirectional sealing lip 6 at the L-shaped bent part, and the size of the arc-shaped groove 7 is matched with that of the end part of the bidirectional sealing lip 6; the end part of the axial sealing lip 4 is obliquely arranged on the L-shaped horizontal folding edge of the outer framework 2 and is connected with the outer framework 2 in an interference fit manner; the end part of the radial sealing lip 5 is obliquely arranged on the L-shaped vertical folded edge of the outer framework 2 and is connected with the outer framework 2 in an interference fit manner; the end of the bidirectional sealing lip 6 is arranged in the circular arc groove 7 at the L-shaped bending part of the outer framework 2, and the two are in clearance fit connection.

The utility model discloses a concrete use does: when grease leakage occurs on one side of the grease in the bearing towards the radial sealing lip 5, the two-way sealing lip 6 of the rubber sealing ring 3 is slightly deformed under the extrusion of the grease, and the tail end of the two-way sealing lip is tightly attached to the radial matching surface 9 of the arc-shaped groove 7 at the bending part of the outer framework 2, so that the two-way sealing lip cannot be deformed continuously due to physical limitation, and the sealing effect is achieved; when external foreign matters enter the rubber sealing ring 3 of the bearing to enable the axial sealing lip 4 to lose efficacy, the bidirectional sealing lip 6 is slightly deformed by the extrusion of the foreign matters, the tail end of the bidirectional sealing lip is tightly attached to the axial matching surface 8 of the arc-shaped groove 7 at the bending part of the outer framework 2, so that the bidirectional sealing lip cannot be continuously deformed due to physical limitation, the sealing effect is achieved, the contact area between the rubber sealing lip and the outer framework 2 is reduced under the same sealing performance, and the friction torque generated by the sealing ring is reduced.

The part of the utility model not detailed is prior art.

Claims

1. The utility model provides a novel combined sealing structure, includes inner frame (1), exoskeleton (2) and rubber seal (3), characterized by: the cross sections of the inner framework (1) and the outer framework (2) are L-shaped, the inner framework (1) and the outer framework (2) are symmetrically arranged and are mutually buckled to form a rectangular structure with a cavity inside; the rubber sealing ring (3) is coated on the L-shaped vertical folded edge of the inner framework (1), and an axial sealing lip (4), a radial sealing lip (5) and a bidirectional sealing lip (6) extend out of a cavity of a rectangular structure formed by the inner framework (1) and the outer framework (2) of the rubber sealing ring (3); the outer framework (2) is provided with an arc-shaped groove (7) connected with the bidirectional sealing lip (6) at the L-shaped bent part; the end part of the axial sealing lip (4) is obliquely arranged on the L-shaped horizontal folded edge of the outer framework (2) and is connected with the L-shaped horizontal folded edge in an interference fit manner; the end part of the radial sealing lip (5) is obliquely arranged on the L-shaped vertical folded edge of the outer framework (2) and is connected with the L-shaped vertical folded edge in an interference fit manner; the end part of the bidirectional sealing lip (6) is arranged in a circular arc groove (7) at the L-shaped bending part of the outer framework (2), and the two are in clearance fit connection.

2. The novel combined sealing structure of claim 1, wherein: a layer of rubber sealing ring (3) is attached to the inner wall and the upper edge of the L-shaped horizontal folded edge of the inner framework (1) and is connected with the rubber sealing ring (3) coated by the L-shaped vertical folded edge of the inner framework (1) into a whole.

3. The novel combined sealing structure of claim 1, wherein: the size of the circular arc-shaped groove (7) at the L-shaped bent part of the outer framework (2) is matched with the size of the end part of the two-way sealing lip (6).