Composite structure of inner-diameter five-lip adhesive dustproof cover and double-lip adhesive check ring

Abstract

The utility model discloses a composite structure of an inner diameter five-lip dustproof cover with glue and a double-lip check ring with glue. Comprising a dustproof cover body with rubber, an annular outer framework, an outer folding edge, an annular rubber outer sealing piece, a thin rubber layer, an inner sealing lip edge, an outer sealing lip edge, a tooth-shaped sealing lip edge, a check ring body with rubber, an annular inner framework, an inner folding edge, an annular rubber inner sealing piece, an upper sealing lip edge and a lower sealing lip edge. And external heavy pollutants and dust are difficult to intrude into the bearing, so that the service life of the bearing in a heavy pollutant environment is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing accessories, in particular to the technical field of a composite structure of an inner diameter five-lip rubber dust cover and a double-lip rubber retaining ring. Background Art

[0002] Bearing is an important component in modern mechanical equipment. It is a component that fixes and reduces the load friction coefficient during mechanical transmission. When other components produce relative motion on the shaft, the bearing is used to reduce the friction coefficient during power transmission and keep the center position of the shaft fixed. Its main function is to support the mechanical rotating body, reduce its friction coefficient during movement, and ensure its rotation accuracy. The bearing is generally composed of an outer ring, an inner ring and a rolling element located between the inner ring and the outer ring. The sealing performance is poor. During the rotation of the bearing, the lubricating grease inside the bearing is easily leaked due to poor sealing. External dust, moisture and foreign matter can easily invade the inside of the bearing, causing bearing wear, affecting the normal use of the bearing and reducing the service life of the bearing. In order to better protect the bearing, it is necessary to propose a composite structure of an inner diameter five-lip rubber dust cover and a double-lip rubber retaining ring. Summary of the Invention

[0003] The purpose of this utility model is to solve the problems in the prior art and propose a composite structure of an inner diameter five-lip rubber dust cover and a double-lip rubber retaining ring, which can prevent the grease in the bearing from overflowing and external heavy pollutants and dust from invading the interior, thereby greatly improving the service life of the bearing in a heavily polluted environment.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a composite structure of an inner diameter five-lip rubber dust cover and a double-lip rubber retaining ring, including a rubber dust cover body, an annular outer skeleton, an outward-turned folding edge, an annular rubber outer seal, a thin rubber layer, an inner sealing lip, an outer sealing lip, a toothed sealing lip, a rubber retaining ring body, an annular inner skeleton, an inward-turned folding edge, an annular rubber inner seal, an upper sealing lip and a lower sealing lip. The rubber dust cover body is provided with an annular outer skeleton, an outward-turned folding edge is provided on the outer diameter position of the annular outer skeleton, an annular rubber outer seal is embedded on the inner side of the annular outer skeleton, and the annular rubber outer The outer side of the seal is provided with a thin rubber layer that fits with the annular outer skeleton. The inner diameter ring of the annular rubber outer seal is provided with an inner sealing lip and an outer sealing lip parallel to each other. The inner side of the annular rubber outer seal is evenly provided with three mutually parallel toothed sealing lips. The outer side of the toothed sealing lips is correspondingly provided with a rubber retaining ring body. The rubber retaining ring body is provided with an annular inner skeleton. The inner diameter position of the annular inner skeleton is provided with an inverted folded edge. The outer side of the annular inner skeleton is embedded with an annular rubber inner seal. The outer side of the annular rubber inner seal is provided with an upper sealing lip and a lower sealing lip.

[0005] Preferably, a supporting inner ring edge is provided at a position of the annular outer skeleton corresponding to the toothed sealing lip edge, and a resisting outer ring edge is provided at a position of the annular inner skeleton corresponding to the toothed sealing lip edge.

[0006] Preferably, the inner diameters of the inner sealing lip and the outer sealing lip are the same, and the inner diameter of the inverted fold is larger than the inner diameter of the inner sealing lip.

[0007] Preferably, the cross-sections of the upper sealing lip and the lower sealing lip are both arc-shaped, and the annular outer frame is provided with abutting inner annular edges at positions corresponding to the upper sealing lip and the lower sealing lip.

[0008] Preferably, the thickness of the lower sealing lip gradually decreases from the root to the end.

[0009] The beneficial effects of the utility model are as follows: the utility model combines the rubber dust cover main body, the annular outer skeleton, the outward-turned folding edge, the annular rubber outer seal, the thin rubber layer, the inner sealing lip, the outer sealing lip, the toothed sealing lip, the rubber retaining ring main body, the annular inner skeleton, the inward-turned folding edge, the annular rubber inner seal, the upper sealing lip and the lower sealing lip together. After experimental optimization, the outward-turned folding edge of the annular outer skeleton is tightly matched with the bearing outer sleeve, and the thin rubber layer is tightly fitted with the ring to prevent the bearing grease from overflowing from the outer sleeve. The three toothed sealing lips are in contact with the rubber retaining ring main body, which more effectively prevents the bearing grease from seeping out. The outer sealing lip is used to prevent external pollutants from entering the bearing, ensuring that the bearing is intact. The inner sealing lip is used to prevent grease in the bearing from overflowing. The inward-turned folding edge of the annular inner skeleton is tightly matched with the inner sleeve of the bearing. The upper sealing lip and the lower sealing lip are tightly fitted with the annular outer skeleton to prevent external pollutants from entering the bearing. The annular inner skeleton is in contact with the three toothed sealing lips, which not only builds a second line of defense for external pollutants from entering the bearing, but also can prevent grease inside the bearing from overflowing.

[0010] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the composite structure of the inner diameter five-lip rubber dust cover and the double-lip rubber retaining ring of the utility model.

[0012] In the figure: 1-rubber dust cover body, 2-annular outer skeleton, 3-outward-turned folding edge, 4-annular rubber outer seal, 5-thin rubber layer, 6-inner sealing lip, 7-outer sealing lip, 8-toothed sealing lip, 9-rubber retaining ring body, 10-annular inner skeleton, 11-inward-turned folding edge, 12-annular rubber inner seal, 13-upper sealing lip, 14-lower sealing lip. DETAILED DESCRIPTION

[0013] See Figure 1 The utility model comprises a composite structure of an inner diameter five-lip rubber dust cover and a double-lip rubber retaining ring, comprising a rubber dust cover body 1, an annular outer skeleton 2, an outward-turned folding edge 3, an annular rubber outer seal 4, a thin rubber layer 5, an inner sealing lip 6, an outer sealing lip 7, a toothed sealing lip 8, a rubber retaining ring body 9, an annular inner skeleton 10, an inward-turned folding edge 11, an annular rubber inner seal 12, an upper sealing lip 13 and a lower sealing lip 14. The rubber dust cover body 1 is provided with an annular outer skeleton 2, an outward-turned folding edge 3 is arranged on the outer diameter position of the annular outer skeleton 2, an annular rubber outer seal 4 is embedded on the inner side of the annular outer skeleton 2, a thin rubber layer 5 is arranged on the outer side of the annular rubber outer seal 4, an inner diameter ring of the annular rubber outer seal 4 is provided with an inner sealing lip 6 and an outer sealing lip 7 parallel to each other, and three toothed sealing lips 8 are evenly arranged on the inner side of the annular rubber outer seal 4. The outer side of the lip 8 is provided with a rubber retaining ring body 9, and the rubber retaining ring body 9 is provided with an annular inner skeleton 10. The inner diameter position of the annular inner skeleton 10 is provided with an inverted folding edge 11, and the outer side of the annular inner skeleton 10 is embedded with an annular rubber inner seal 12, and the outer side of the annular rubber inner seal 12 is provided with an upper sealing lip 13 and a lower sealing lip 14. The position of the annular outer skeleton 2 corresponding to the toothed sealing lip 8 is provided with a supporting inner ring edge, and the position of the annular inner skeleton 10 corresponding to the toothed sealing lip 8 is provided with a resisting outer ring edge. The inner diameter of the inner sealing lip 6 and the outer sealing lip 7 is the same, the inner diameter of the inverted folding edge 11 is larger than the inner diameter of the inner sealing lip 6, the cross-sectional shapes of the upper sealing lip 13 and the lower sealing lip 14 are both arc-shaped, and the annular outer skeleton 2 is provided with a resisting inner ring edge at the position corresponding to the upper sealing lip 13 and the lower sealing lip 14. The thickness of the lower sealing lip 14 gradually decreases from the root to the end.

[0014] The utility model combines a rubber dust cover body 1, an annular outer skeleton 2, an outward-turned folding edge 3, an annular rubber outer seal 4, a thin rubber layer 5, an inner sealing lip 6, an outer sealing lip 7, a toothed sealing lip 8, a rubber retaining ring body 9, an annular inner skeleton 10, an inward-turned folding edge 11, an annular rubber inner seal 12, an upper sealing lip 13 and a lower sealing lip 14. After experimental optimization, the outward-turned folding edge 3 of the annular outer skeleton 2 is tightly matched with the bearing outer sleeve, the thin rubber layer 5 is tightly fitted with the ring to prevent the bearing grease from overflowing from the outer sleeve, and the three toothed sealing lips 8 are tightly fitted with the outer sleeve. The rubber retaining ring body 9 is in contact, which can more effectively prevent the bearing grease from seeping out. The outer sealing lip 7 is used to prevent external pollutants from entering the bearing to ensure the integrity of the bearing. The inner sealing lip 6 is used to prevent the grease in the bearing from overflowing. The inward folded edge 11 of the annular inner skeleton 10 is tightly fitted with the inner sleeve of the bearing. The upper sealing lip 13 and the lower sealing lip 14 are tightly fitted with the annular outer skeleton 2 to prevent external pollutants from entering the bearing. The annular inner skeleton 10 is in contact with the three toothed sealing lips 8, which not only builds a second line of defense for external pollutants to enter the bearing, but also prevents the grease inside the bearing from overflowing.

[0015] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.

Claims

1. The composite structure of the inner diameter five-lip rubber dust cover and double-lip rubber retaining ring is characterized by: The invention comprises a rubber dust cover body (1), an annular outer frame (2), an outward-turned folding edge (3), an annular rubber outer seal (4), a thin rubber layer (5), an inner sealing lip (6), an outer sealing lip (7), a toothed sealing lip (8), a rubber retaining ring body (9), an annular inner frame (10), an inward-turned folding edge (11), an annular rubber inner seal (12), an upper sealing lip (13) and a lower sealing lip (14), wherein the rubber dust cover body (1) is provided with an annular outer frame (2), an outward-turned folding edge (3) is provided around the outer diameter of the annular outer frame (2), an annular rubber outer seal (4) is embedded on the inner side of the annular outer frame (2), and an outer side of the annular rubber outer seal (4) is provided with a sealing ring that is aligned with the annular outer frame ( 2) a thin rubber layer (5) that is bonded to the surface, the inner diameter of the annular rubber outer seal (4) is provided with an inner sealing lip (6) and an outer sealing lip (7) that are parallel to each other, the inner side of the annular rubber outer seal (4) is evenly provided with three toothed sealing lips (8) that are parallel to each other, the outer side of the toothed sealing lip (8) is provided with a rubber retaining ring body (9), the rubber retaining ring body (9) is provided with an annular inner skeleton (10), the inner diameter position of the annular inner skeleton (10) is provided with an inverted fold (11), the outer side of the annular inner skeleton (10) is embedded with an annular rubber inner seal (12), and the outer side of the annular rubber inner seal (12) is provided with an upper sealing lip (13) and a lower sealing lip (14).

2. The composite structure of the inner diameter five-lip adhesive dust cover and double-lip adhesive retaining ring according to claim 1, characterized in that: The annular outer skeleton (2) is provided with a supporting inner ring edge at a position corresponding to the toothed sealing lip edge (8), and the annular inner skeleton (10) is provided with a resisting outer ring edge at a position corresponding to the toothed sealing lip edge (8).

3. The composite structure of the inner diameter five-lip adhesive dust cover and double-lip adhesive retaining ring according to claim 1, characterized in that: The inner sealing lip (6) and the outer sealing lip (7) have the same inner diameter, and the inner diameter of the inverted fold (11) is larger than the inner diameter of the inner sealing lip (6).

4. The composite structure of the inner diameter five-lip adhesive dust cover and double-lip adhesive retaining ring according to claim 1, characterized in that: The cross-sectional shapes of the upper sealing lip (13) and the lower sealing lip (14) are both arc-shaped, and the annular outer skeleton (2) is provided with abutting inner annular edges at positions corresponding to the upper sealing lip (13) and the lower sealing lip (14).

5. The composite structure of the inner diameter five-lip adhesive dust cover and double-lip adhesive retaining ring according to claim 1, characterized in that: The thickness of the lower sealing lip (14) gradually decreases from the root to the end.

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