CN215293283U

CN215293283U - Waterproof double-layer sealing deep groove ball bearing

Info

Publication number: CN215293283U
Application number: CN202023100758.2U
Authority: CN
Inventors: 顾峰柏; 周国平
Original assignee: Wuxi Bokai Light Bearing Co ltd
Current assignee: Wuxi Bokai Light Bearing Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-12-24
Anticipated expiration: 2030-12-21

Abstract

The utility model provides a waterproof double-deck sealed deep groove ball bearing, including inner circle, outer lane, steel ball, outside sealing washer and inboard sealing washer, the inner circle endotheca is equipped with the outer lane, the steel ball is provided with a plurality ofly on the circular orbit that inner circle and outer lane formed, the dust-proof groove has all been seted up to the inside of inner circle and outer lane, the dust-proof groove is seted up in the circular orbit one end that inner circle and outer lane formed, and keeps away from the steel ball setting, the inside wall fixing clip of outside sealing washer is established on the dust-proof groove A position of inner circle, and the lateral wall contact is on the dust-proof groove B position of outer lane, the lateral wall fixing clip of inboard sealing washer is established on the dust-proof groove C position of outer lane, and the inside wall contact is on the dust-proof groove D position of inner circle; the utility model discloses an inner structure's optimization sets up double-deck sealed can not only be twice waterproof, and can change the flow direction of water, can be favorable to prolonging the holistic life of sealed bearing.

Description

Waterproof double-layer sealing deep groove ball bearing

Technical Field

The utility model mainly relates to a sealed bearing field especially relates to a double-deck sealed deep groove ball bearing of waterproof type.

Background

At present, because the restriction of spatial position, the deep groove ball bearing generally adopts the individual layer sealed, can prevent to a certain extent that inside grease from leaking and external impurity from getting into inside the bearing, but waterproof performance is relatively poor, and can not be waterproof for a long time, and water or steam get into inside the bearing and can cause the bearing to rust inefficacy.

The single-layer contact type seal has certain waterproof performance in the early stage, but along with the abrasion of rubber at the contact part of the seal ring, the sealing effect is poorer and poorer until the seal ring completely fails.

Therefore, the waterproof double-layer sealed deep groove ball bearing with good waterproof performance is provided.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a waterproof double-layer sealed deep groove ball bearing, which comprises an inner ring 1, an outer ring 2, a steel ball 3, an outer side sealing ring 4 and an inner side sealing ring 5, wherein the outer ring 2 is sleeved on the inner ring 1, a plurality of steel balls 3 are arranged on an annular track formed by the inner ring 1 and the outer ring 2,

the inner part of the inner ring 1 and the outer ring 2 are both provided with a dustproof groove 6, the dustproof groove 6 is arranged at one end of an annular track formed by the inner ring 1 and the outer ring 2 and is far away from the steel ball 3,

the inner side wall of the outer side sealing ring 4 is fixedly clamped on the part A of the dustproof groove of the inner ring 1, the outer side wall is in interference contact with the part B of the dustproof groove of the outer ring 2,

the outer side wall of the inner side sealing ring 5 is fixedly clamped on the dust-proof groove C of the outer ring 2, the inner side wall is in interference contact with the dust-proof groove D of the inner ring 1,

the cover is equipped with holder 7 on the steel ball 3, holder 7 is the loop configuration, just steel ball 3 is fixed through holder 7 and is set up on the circular orbit that inner circle 1 and outer lane 2 formed, and outside sealing washer 4 adopts 65Mn skeleton and nitrile rubber to make and forms, and dust groove B position interference fit setting on 4 outer lips of outside sealing washer and the outer lane 2, and the inboard nitrile rubber of outside sealing washer 4 fills up the dust groove A position that is full of inner circle 1, makes outside sealing washer 4 and inner circle 1 close as an organic wholely.

Preferably, the outer lip of the inner side sealing ring 5 is in interference fit with the dustproof groove on the outer ring 2.

Preferably, the inner lip of the inner side sealing ring 5 is in interference fit with the dustproof groove on the inner ring 1.

The utility model has the advantages that:

through optimization of an internal structure, double-layer sealing is arranged, an outer sealing ring is fixed on an inner ring by adopting a special framework, and an outer lip of the sealing ring is in contact with an outer ring dustproof groove, so that water can be effectively prevented from entering the inside of the bearing; the inner sealing ring is fixed on the outer ring, and the inner lip of the sealing ring is contacted with the inner ring dustproof groove to establish a second defense line;

the sealing structure can not only prevent water twice, but also change the flow direction of water, and is beneficial to prolonging the service life of the whole sealing bearing.

Drawings

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

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

FIG. 3 is an enlarged view of a portion of the structure of the present invention;

in the figure, the position of the upper end of the main shaft,

1. an inner ring; 2. an outer ring; 3. a steel ball; 4. an outer seal ring; 5. an inner side seal ring; 6. a dust-proof groove; 7. a cage.

Detailed Description

In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.

As shown in fig. 1-3, the present invention comprises: the steel ball bearing comprises an inner ring 1, an outer ring 2, a steel ball 3, an outer side sealing ring 4 and an inner side sealing ring 5, wherein the outer ring 2 is sleeved on the inner ring 1, a plurality of steel balls 3 are arranged on an annular track formed by the inner ring 1 and the outer ring 2,

the cover is equipped with holder 7 on the steel ball 3, holder 7 is the loop configuration, just steel ball 3 is fixed through holder 7 and is set up on the circular orbit that inner circle 1 and outer lane 2 formed, and outside sealing washer 4 adopts 65Mn skeleton and nitrile rubber to make and forms, and the dust groove interference fit setting on 4 outer lips of outside sealing washer and the outer lane 2, and the inboard nitrile rubber of outside sealing washer 4 fills up the dust groove A position on being full of inner circle 1, makes outside sealing washer 4 and inner circle 1 close as an organic wholely.

In this embodiment, it is preferable that the outer lip of the inner seal ring 5 is disposed in an interference fit with the dust-proof groove on the outer ring 2.

In this embodiment, it is preferable that the inner lip of the inner seal ring 5 is disposed in interference fit with the dust-proof groove on the inner ring 1.

The working principle is as follows:

the outer sealing ring adopts an open 65Mn framework and wear-resistant nitrile rubber, the open 65Mn framework can be firmly fixed on the inner ring dustproof groove, the nitrile rubber at the inner side of the framework is filled in the inner ring dustproof groove, so that the outer sealing ring and the inner ring are integrated, external water can be prevented from entering the bearing from the A part, the outer lip of the outer sealing ring is in interference fit with the B part of the outer ring dustproof groove, water can be prevented from entering the bearing from the B part, and a first line of defense is established;

the inner side sealing ring is in interference fit with the outer ring dustproof groove and can prevent water from entering the bearing from the C position, the inner lip of the inner side sealing ring is in interference fit with the D position of the inner ring dustproof groove and can prevent water from entering the bearing from the D position, and a second defense line is established.

In use, the bearing during operation inner circle is rotatory, there is water to splash the bearing surface when the external world, owing to receive the effect of centrifugal force, most water can be thrown away by outside sealing washer, the little water of bearing surface can be blockked at A, B positions, if the bearing long-term operation back B position's sealing washer appears wearing and tearing, water-proof effects weakens, little water passes through B position entering bearing, the inboard sealing washer blocks, until long-pending having a large amount of water between outside sealing washer and the inboard sealing washer, and D position rubber just can get into inside the bearing when wearing and tearing appear, bearing life has been prolonged greatly.

The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.

Claims

1. A waterproof double-layer sealed deep groove ball bearing is characterized by comprising an inner ring (1), an outer ring (2), a steel ball (3), an outer side sealing ring (4) and an inner side sealing ring (5), wherein the outer ring (2) is sleeved on the inner ring (1), a plurality of steel balls (3) are arranged on an annular track formed by the inner ring (1) and the outer ring (2),

the inner ring (1) and the outer ring (2) are both internally provided with dustproof grooves (6), the dustproof grooves (6) are arranged at one end of an annular track formed by the inner ring (1) and the outer ring (2) and are far away from the steel ball (3),

the inner side wall of the outer side sealing ring (4) is fixedly clamped on the dust-proof groove A of the inner ring (1), the outer side wall is contacted on the dust-proof groove B of the outer ring (2),

the outer side wall of the inner side sealing ring (5) is fixedly clamped on the dust-proof groove C part of the outer ring (2), the inner side wall is contacted on the dust-proof groove D part of the inner ring (1),

the cover is equipped with holder (7) on steel ball (3), holder (7) are the loop configuration, just steel ball (3) are fixed to be set up on the circular orbit that inner circle (1) and outer lane (2) formed through holder (7), outside sealing washer (4) adopt 65Mn skeleton and nitrile rubber to make and form, dust groove B position interference fit on outside sealing washer (4) outer lip and outer lane (2) sets up, dust groove A position on inner circle (1) is filled to the nitrile rubber of outside sealing washer (4) inboard makes inboard sealing washer (5) close as an organic wholely with inner circle (1).

2. The waterproof double-layer sealed deep groove ball bearing of claim 1, wherein: the outer lip of the inner side sealing ring (5) is in interference fit with the dustproof groove on the outer ring (2).

3. The waterproof double-layer sealed deep groove ball bearing of claim 2, wherein: the inner lip of the inner side sealing ring (5) is in interference fit with the dustproof groove on the inner ring (1).