CN223215609U

CN223215609U - A bearing with noise reduction function

Info

Publication number: CN223215609U
Application number: CN202422393778.5U
Authority: CN
Inventors: 潘军明
Original assignee: Ningbo Ruizhi Bearing Co ltd
Current assignee: Ningbo Ruizhi Bearing Co ltd
Priority date: 2024-09-30
Filing date: 2024-09-30
Publication date: 2025-08-12
Anticipated expiration: 2034-09-30

Abstract

A bearing with a noise reduction function comprises an outer ring, an inner ring, a retaining cage and a ball outer ring, the outer circumferential surface of which is provided with a groove, a vibration-damping component is embedded in the groove, and the vibration-damping component protrudes a certain distance from the top surface of the groove. By utilizing the provided groove and the vibration-damping component, a vibration-damping structure is provided between the contact surface of the bearing and the differential pack, thereby reducing the vibration impact on the differential pack during the rotation of the bearing, reducing the vibration friction between the two, playing a role in reducing noise, and at the same time extending the service life of the bearing and the differential pack; two or more grooves are provided, so that the bearing and the differential pack can achieve a uniform vibration reduction setting in the axial direction, thereby enhancing the installation stability between the bearing and the differential pack and improving the vibration and noise reduction effects.

Description

Bearing with noise reduction function

Technical Field

The utility model relates to the field of bearings, in particular to a bearing with a noise reduction function.

Background

The main function of the bearing is to support the mechanical rotator, reduce the friction coefficient in the motion process and ensure the rotation precision. The structure of the bearing comprises an outer ring, an inner ring, a retainer, balls and grease. Common bearings include deep groove ball bearings, cylindrical roller bearings, tapered roller bearings, etc., wherein deep groove ball bearings are commonly used in connection of an electric tricycle differential package with a vehicle rear axle shaft.

The installation of rear axle and bearing adopts interference fit's mounting means usually, therefore can lead to the deformation of the outer lane of bearing in the installation, makes the bearing produce great vibration noise in the use, influences the life of bearing.

Disclosure of utility model

In order to solve the technical problems, the utility model provides the bearing with the noise reduction function, which not only has the effect of noise reduction, but also can reduce the vibration of the bearing, so that the running of a vehicle is more stable.

The technical scheme includes that the bearing with the noise reduction function comprises an outer ring, an inner ring, a retainer and balls, wherein a groove is formed in the circumferential direction of the outer ring, a vibration reduction part is embedded in the groove, and the vibration reduction part protrudes out of the top surface of the groove for a certain distance.

Further, the groove is provided with at least two channels along the axial direction of the bearing.

Further, the vibration reduction component is an O-shaped sealing ring.

Further, the vibration reduction component is made of nitrile rubber, hydrogenated nitrile rubber, silicon rubber, fluororubber, fluorosilicone rubber, ethylene propylene diene rubber or ‌ chloroprene rubber and the like.

Further, when the grooves are arranged in two ways, the vertical distance between the two grooves and the end face of the bearing, which is close to the grooves, is equal.

Further, when the grooves are arranged in more than two ways, the vertical distance between the grooves on two sides and the end face of the bearing close to the grooves is equal.

Further, when the grooves are arranged in more than two ways, the vertical clear distances between two adjacent grooves are equal.

Further, the distances between the vibration reduction parts protruding out of the top surface of the groove are equal.

The bearing with the noise reduction function has the advantages that the vibration reduction structure is arranged between the bearing and the opposite surface of the differential belt package by utilizing the grooves and the vibration reduction parts, so that vibration impact on the differential belt package in the rotation process of the bearing is reduced, vibration friction between the bearing and the differential belt package is reduced, the effect of reducing noise is achieved, meanwhile, the service lives of the bearing and the differential belt package are prolonged, and two or more grooves are arranged, so that the bearing and the differential belt package are uniformly arranged in the axial direction, the installation stability between the bearing and the differential belt package is enhanced, and the vibration reduction and noise reduction effects are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a bearing with noise reduction function according to the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at I;

fig. 3 is a schematic view showing an external groove structure of a bearing with a noise reduction function according to the first embodiment;

fig. 4 is a schematic structural view of a bearing with noise reduction function according to the first embodiment;

Fig. 5 is a schematic view of an external groove structure of a bearing with noise reduction function according to a second embodiment;

fig. 6 is a schematic structural view of a bearing with noise reduction function according to a second embodiment.

In the figure, 1-outer ring, 11-groove, 2-inner ring, 3-retainer, 4-ball and 5-vibration reduction component.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and examples. The following examples serve to better illustrate the utility model without limiting the claims.

Examples

As shown in fig. 1 and fig. 2, a bearing with noise reduction function comprises an outer ring 1, an inner ring 2, a retainer 3 and balls 4, wherein two grooves 11 are circumferentially formed in the outer circumferential surface of the outer ring 1, vibration reduction parts 5 are respectively embedded in the grooves 11, the vibration reduction parts 5 are nitrile rubber O-shaped sealing rings, and after the vibration reduction parts 5 and the grooves 11 are installed, the vibration reduction parts 5 are protruded out of the top surfaces of the grooves 11 for a certain distance. The vibration reduction part 5 protrudes out of the top surface of the groove 11, so that after the bearing and the differential speed package are installed, the contact surface between the bearing and the differential speed package can be buffered through the vibration reduction part, vibration caused by direct contact between the bearing and the differential speed package in the running process of a vehicle is reduced, and noise is reduced.

As shown in fig. 3 and 4, the depth of the grooves 11 is H1, the width of the grooves 11 is W1, and the vertical distance W2 between the two grooves 11 and the adjacent bearing end surface is equal.

As shown in fig. 4, the distance that the vibration reduction component 4 protrudes from the top surface of the groove 11 is H2, and the H2 is equal.

Examples

As shown in fig. 5 and 6, in some other embodiments, a bearing with a noise reduction function includes an outer ring 1, an inner ring 2, a cage 3 and balls 4, where the outer circumferential surface of the outer ring 1 is circumferentially provided with grooves 11, and the grooves 11 may be three or four, and the clear distances W3 between two adjacent grooves 11 are equal, so that the whole bearing is uniformly stressed in the axial direction.

The depth of the grooves 11 is H1, the width of the grooves 11 is W1, and the vertical distance W2 between two grooves 11 nearest to the end face of the bearing and the end face of the bearing close to the grooves is equal.

The distance that the vibration reduction part 4 protrudes out of the top surface of the groove 11 is H2, and the H2 is equal.

Claims

1. The bearing with the noise reduction function comprises an outer ring, an inner ring, a retainer and balls, and is characterized in that a groove is formed in the circumferential direction of the outer peripheral surface of the outer ring, a vibration reduction part is embedded in the groove and protrudes out of the top surface of the groove by a certain distance, at least two grooves are formed in the groove along the axial direction of the bearing, and the vibration reduction part is an O-shaped sealing ring.

2. The bearing with noise reduction function according to claim 1, wherein the vibration reduction component is made of nitrile rubber, hydrogenated nitrile rubber, silicone rubber, fluororubber, fluorosilicone rubber, ethylene propylene diene monomer rubber or ‌ ‌ neoprene rubber.

3. A bearing with noise reduction function according to claim 1, wherein when the grooves are provided in two, the perpendicular distances between the two grooves and the bearing end face to which they are close are equal.

4. The bearing with the noise reduction function according to claim 1, wherein when the grooves are arranged in more than two ways, the vertical distances between the grooves on two sides and the end face of the bearing close to the grooves are equal.

5. A bearing with noise reduction according to claim 1 or 4, wherein when the grooves are provided in two or more ways, the vertical clear distances between two adjacent grooves are equal.

6. A bearing with noise reduction function according to claim 1, wherein the vibration reduction members protrude from the top surface of the groove by equal distances.