Waterproof flushing bearing

Abstract

The utility model relates to a waterproof flushing bearing, which is designed for solving the technical problems that the existing like products are inconvenient to produce and assemble, and inner and outer dustproof covers or waterproof covers need to be partially propped against each other to be mutually limited and fixed. Two rows of steel balls are arranged between an inner ring and an outer ring of the bearing, and a first waterproof cover and a second waterproof cover are simultaneously arranged in annular gaps at the two ends between the outer ring and the inner ring on the outer sides of the steel balls respectively; the key point is that the outer diameter of the first waterproof cover is respectively fixed on a first outer ring step of the outer ring, and an inner hole of the first waterproof cover is attached to or aligned with the outer diameter of the inner ring to form a gap; an inner hole of the second waterproof cover is fixed to an inner ring step of the inner ring, the outer diameter of the second waterproof cover is attached to or aligned with a second outer ring step of the outer ring, a gap is formed between the outer diameter of the second waterproof cover and the second outer ring step of the outer ring, and the outer diameter of the second waterproof cover is larger than the inner diameter of a first outer ring step below the second outer ring step of the outer ring. And a first outer ring step and an inner ring step at the fixed part of the first waterproof cover and the second waterproof cover are respectively trapezoidal grooves which are outwards inclined and enlarged.

Description

Technical Field

[0001] The utility model relates to a waterproof bearing, which is a waterproof flushing bearing. Background Art

[0002] Bearings are components that fix and reduce the load friction coefficient during mechanical transmission. When other parts move relative to each other on the shaft, they are used to reduce the friction coefficient during power transmission and keep the center position of the shaft fixed. According to the different friction properties of the moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Among them, some bearings use two inner and outer double waterproof cover structures on both sides to achieve better waterproof effect, such as the application number 202011613778.1 disclosed in the Chinese patent document, the application publication date is 2021.04.27, and the invention name is "a heavy-loaded waterproof ball bearing"; another example is the application number 202221763463.X disclosed in the Chinese patent document, the authorization announcement date is 2022.011.11, and the utility model name is "a high-efficiency waterproof roller bearing sealing assembly". However, the production and assembly of the above products and similar products are relatively inconvenient, and the inner and outer dust covers or waterproof covers need to partially offset each other and limit and fix each other, and the stability of single-row steel ball bearings or double-row steel ball bearings is poor. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a waterproof flushing bearing in the art, so as to solve the technical problems that the production and assembly of existing similar products are relatively inconvenient, the inner and outer dust covers or waterproof covers need to partially abut against each other and be fixed, and the single-row steel ball bearing or double-row steel ball bearing has poor stability. The purpose is achieved through the following technical solution.

[0004] A waterproof flushing bearing, wherein at least one row of steel balls is arranged between the inner ring and the outer ring of the bearing, and a first waterproof cover and a second waterproof cover are respectively arranged in the annular gaps at both ends between the outer ring and the inner ring outside the steel balls, and the second waterproof cover is respectively arranged in the annular gap outside the first waterproof cover; the key points of its structural design are that the outer diameter of the first waterproof cover is respectively fixed to the first outer ring step of the outer ring, the inner hole of the first waterproof cover is fitted or aligned with the outer diameter of the inner ring and a gap is provided; the inner hole of the second waterproof cover is fixed to the inner ring step of the inner ring, the outer diameter of the second waterproof cover is fitted or aligned with the second outer ring step of the outer ring and a gap is provided, the outer diameter of the second waterproof cover is higher than the inner diameter of the first outer ring step below the second outer ring step of the outer ring, and the first outer ring step and the inner ring step at the fixing point of the first waterproof cover and the second waterproof cover are respectively trapezoidal grooves inclined outward and enlarged. The first waterproof cover and the second waterproof cover are convenient for assembly and replacement through the inner and outer ring diameter staggered buckles, and the outer diameter of the second waterproof cover is higher than the groove at the second outer ring step fitted to the outer ring, which ensures its waterproofness during flushing.

[0005] The second waterproof cover is provided with a coating layer on one side or both sides of the first waterproof cover, and the coating layer on the second waterproof cover on the first waterproof cover is sealed to the opening between the inner circle and the outer circle outside the first waterproof cover. The above structure further ensures the waterproof property, making the waterproof effect better during flushing.

[0006] Two rows of steel balls are arranged between the inner ring and the outer ring. The above structure improves the stability during operation.

[0007] A V-shaped groove is arranged between the symmetrically raised ribs connected by the triangle on the outer diameter of the outer ring, and a semicircular groove is arranged at the bottom of the V-shaped groove, which is aligned with the middle between the two rows of steel balls inside. The above structure further improves its stability during operation and the airtightness or oil injection lubrication at the semicircular groove.

[0008] The utility model has reasonable structural design, convenient production and assembly of the double-layer waterproof cover, good waterproof sealing effect, good stability and long service life; the utility model is suitable for use as a waterproof flushing bearing and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic cross-sectional view of the structure of the utility model, in which the first waterproof cover and the second waterproof cover are omitted and the A part is framed.

[0010] Figure 2 yes Figure 1 The first waterproof cover and the second waterproof cover are placed in the A part of the enlarged structure diagram Figure 1 In the figure, the first waterproof cover and the second waterproof cover are fitted.

[0011] Figure 3 yes Figure 1 The first waterproof cover and the second waterproof cover are placed in the A part of the enlarged structure diagram Figure 2 , the first waterproof cover and the second waterproof cover in the figure are non-contact.

[0012] Figure 4 yes Figure 1 The first waterproof cover and the second waterproof cover are placed in the A part of the enlarged structure diagram Figure 3 In the figure, one of the first waterproof cover and the second waterproof cover is in contact, and the other is non-contact.

[0013] Serial numbers and names of the accompanying drawings: 1. Inner ring, 101. Inner ring step, 2. Outer ring, 201. First outer ring step, 202. Second outer ring step, 203. V-shaped groove, 3. Steel balls, 4. First waterproof cover, 5. Second waterproof cover. Implementation

[0014] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 4As shown, two rows of steel balls 3 are arranged between the inner ring 1 and the outer ring 2 of the bearing, and the first waterproof cover 4 and the second waterproof cover 5 are arranged in the annular gaps at both ends between the outer ring and the inner ring outside the steel balls, and the second waterproof cover is arranged in the annular gap outside the first waterproof cover. The outer diameter of the first waterproof cover is respectively fixed to the first outer ring step 201 of the outer ring, and the inner hole of the first waterproof cover is fitted or aligned with the outer diameter of the inner ring with a gap; the inner hole of the second waterproof cover is fixed to the inner ring step 101 of the inner ring, and the outer diameter of the second waterproof cover is fitted or aligned with the second outer ring step 202 of the outer ring with a gap, and the outer diameter of the second waterproof cover is higher than the inner diameter of the first outer ring step below the second outer ring step of the outer ring, and the first outer ring step and the inner ring step at the fixing point of the first waterproof cover and the second waterproof cover are respectively trapezoidal grooves inclined outward and enlarged. The first waterproof cover of the second waterproof cover is provided with a coating layer on one side or both sides, and the coating layer on the first waterproof cover side of the second waterproof cover is fitted and sealed to the opening between the inner ring and the outer ring outside the first waterproof cover. A V-shaped groove 203 is arranged between the symmetrically raised ribs connected in a triangle on the outer diameter of the outer ring, and a semicircular groove is arranged at the bottom of the V-shaped groove, which is aligned with the middle between the two rows of steel balls inside.

[0015] In summary, the bearing first places a first waterproof cover inside both ends of the bearing, the outer diameter of the first waterproof cover is fixed on the first outer ring step of the outer ring, and the inner hole of the first waterproof cover is non-contacting or lightly contacting with the outer diameter of the inner ring; then a second waterproof cover is placed, the inner hole of the second waterproof cover is fixed on the inner ring step of the inner ring, and the outer diameter of the second waterproof cover is non-contacting or lightly contacting with the second outer ring step of the outer ring. Thus, the bearing is fixed to the outer ring through the first waterproof cover inside, and the second waterproof cover outside is fixed to the inner ring; when the working environment of the bearing is flushed with water or dusty, it can effectively prevent water or dust from entering the bearing, ensuring the life of the bearing.

Claims

1. A waterproof flushing bearing, wherein at least one row of steel balls (3) is arranged between the inner ring (1) and the outer ring (2) of the bearing, and a first waterproof cover (4) and a second waterproof cover (5) are respectively arranged in the annular gaps at both ends between the outer ring and the inner ring outside the steel balls, and the second waterproof cover is respectively arranged in the annular gap outside the first waterproof cover; characterized in that The outer diameter of the first waterproof cover (4) is respectively fixed to the first outer ring step (201) of the outer ring (2), and the inner hole of the first waterproof cover is fitted or aligned with the outer diameter of the inner ring (1) with a gap; the inner hole of the second waterproof cover (5) is fixed to the inner ring step (101) of the inner ring, and the outer diameter of the second waterproof cover is fitted or aligned with the second outer ring step (202) of the outer ring with a gap, and the outer diameter of the second waterproof cover is higher than the inner diameter of the first outer ring step below the second outer ring step of the outer ring, and the first outer ring step and the inner ring step at the fixing point of the first waterproof cover and the second waterproof cover are respectively trapezoidal grooves that are inclined outward and increase.

2. The waterproof flush bearing according to claim 1, characterized in that The first waterproof cover (4) of the second waterproof cover (5) is provided with a coating layer on one side or both sides, and the coating layer on the second waterproof cover on the first waterproof cover side is fitted and sealed to the opening between the inner ring (1) and the outer ring (2) on the outside of the first waterproof cover.

3. The waterproof flush bearing according to claim 1, characterized in that Two rows of steel balls (3) are provided between the inner ring (1) and the outer ring (2).

4. The waterproof flush bearing according to claim 1, characterized in that A V-shaped groove (203) is provided between the symmetrically raised ribs connected in a triangular shape on the outer diameter of the outer ring (2), and a semicircular groove is provided at the bottom of the V-shaped groove, which is aligned with the middle between the two rows of steel balls (3) inside.

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