Bearing with noise reduction function

Abstract

A bearing with a noise reduction function comprises an outer ring, an inner ring, a retainer and a ball, a groove is circumferentially formed in the peripheral surface of the outer ring, a vibration reduction component is embedded in the groove and protrudes out of the top surface of the groove by a certain distance, and a vibration reduction structure is arranged between the connecting surfaces of the bearing and a differential belt bag by utilizing the groove and the vibration reduction component. Vibration impact on the differential package in the rotating process of the bearing is reduced, vibration friction between the bearing and the differential package is reduced, the effect of reducing noise is achieved, and meanwhile the service life of the bearing and the differential package is prolonged; the two or more grooves are formed, so that the bearing and the differential package achieve uniform vibration reduction in the axial direction, the installation stability between the bearing and the differential package is enhanced, and the vibration reduction and noise reduction effects are improved.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to a bearing with a noise reduction function. Background Art

[0002] The primary function of a bearing is to support rotating mechanical components, reduce friction during movement, and ensure rotational accuracy. A bearing's structure includes an outer ring, inner ring, cage, balls, and grease. Commonly used bearings include deep groove ball bearings, cylindrical roller bearings, and tapered roller bearings. Deep groove ball bearings are often used to connect the differential pack and rear axle shaft of electric tricycles.

[0003] The installation of the rear axle shaft and the bearing usually adopts an interference fit installation method, which will cause the outer ring of the bearing to deform during the installation process, causing the bearing to generate large vibration noise during use, affecting the service life of the bearing. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a bearing with a noise reduction function, which not only has the effect of reducing noise, but also can reduce bearing vibration, making the vehicle operation more stable.

[0005] The technical solution adopted by the utility model is: a bearing with a noise reduction function, comprising an outer ring, an inner ring, a retaining frame and balls, wherein a groove is circumferentially provided on the outer peripheral surface of the outer ring, a vibration-damping component is embedded in the groove, and the vibration-damping component protrudes from the top surface of the groove by a certain distance.

[0006] Furthermore, at least two grooves are provided along the axial direction of the bearing.

[0007] Furthermore, the vibration-damping component is an O-ring.

[0008] Furthermore, the vibration damping component is made of a material such as nitrile rubber, hydrogenated nitrile rubber, silicone rubber, fluororubber, fluorosilicone rubber, EPDM rubber or chloroprene rubber.

[0009] Furthermore, when the grooves are provided in two rows, the vertical distances between the two grooves and the bearing end faces to which they are close are equal.

[0010] Furthermore, when there are two or more grooves, the vertical distances between the grooves on both sides and the bearing end faces they are close to are equal.

[0011] Furthermore, when there are two or more grooves, the vertical net distance between two adjacent grooves is equal.

[0012] Furthermore, the vibration-damping components protrude from the top surface of the groove by the same distance.

[0013] The beneficial effects of the present utility model are as follows: a bearing with a noise reduction function, using the provided grooves and vibration-reducing components to set a vibration-reducing structure between the contact surfaces 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 reduction and noise reduction effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a bearing with noise reduction function according to the present invention;

[0015] Figure 2 for Figure 1 Magnified view of point I;

[0016] Figure 3 This is a schematic diagram of the external groove structure of a bearing with noise reduction function according to the first embodiment;

[0017] Figure 4 This is a schematic structural diagram of a bearing with noise reduction function according to the first embodiment;

[0018] Figure 5 This is a schematic diagram of the external groove structure of a bearing with noise reduction function according to the second embodiment;

[0019] Figure 6 Schematic diagram of the structure of a bearing with noise reduction function according to the second embodiment.

[0020] In the figure, 1-outer ring; 11-groove; 2-inner ring; 3-cage; 4-ball; 5-vibration damping component. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are provided to better explain the present invention, but are not intended to limit the claims. Example

[0022] like Figure 1 and Figure 2As shown, a bearing with a noise reduction function includes an outer ring 1, an inner ring 2, a retainer 3, and balls 4. Two grooves 11 are circumferentially defined on the outer circumference of the outer ring 1. Each groove 11 contains a vibration-damping component 5, which is a nitrile rubber O-ring. After the vibration-damping components 5 are installed in the grooves 11, they protrude a certain distance from the top of the grooves 11. The vibration-damping components 5 protrude from the top of the grooves 11. This protrusion of the vibration-damping components 5 from the top of the grooves 11 allows the contact surfaces between the bearing and the differential pack to be cushioned by the vibration-damping components after installation. This reduces vibration caused by direct contact between the bearing and the differential pack during vehicle operation, thereby reducing noise.

[0023] like Figure 3 and Figure 4 As shown, the depth of the groove 11 is H1 and the width is W1; the vertical distance W2 between the two grooves 11 and the bearing end surface they are close to is equal.

[0024] like Figure 4 As shown, the distance that the vibration-damping component 4 protrudes from the top surface of the groove 11 is H2, and the H2 is equal. Example

[0025] like Figure 5 and Figure 6 As shown, in some other embodiments, a bearing with a noise reduction function includes an outer ring 1, an inner ring 2, a retainer 3 and balls 4. The outer peripheral surface of the outer ring 1 is circumferentially provided with grooves 11. The grooves 11 can be set to three or four, etc. The net distance W3 between two adjacent grooves 11 is equal, so that the entire bearing is evenly stressed in the axial direction.

[0026] The groove 11 has a depth of H1 and a width of W1; the vertical distance W2 between the two grooves 11 closest to the bearing end surface and the bearing end surface they are close to is equal.

[0027] The distance that the vibration-damping component 4 protrudes from the top surface of the groove 11 is H2, and the distance H2 is equal.

Claims

1. A bearing with noise reduction function, comprising an outer ring, an inner ring, a cage and balls, characterized in that: A groove is provided on the outer peripheral surface of the outer ring in a circumferential direction, a vibration-damping component is embedded in the groove, and the vibration-damping component protrudes from the top surface of the groove by a certain distance; at least two grooves are provided along the axial direction of the bearing; the vibration-damping component is an O-ring.

2. A bearing with noise reduction function according to claim 1, characterized in that: The vibration damping component is made of acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, silicone rubber, fluororubber, fluorosilicone rubber, EPDM rubber or chloroprene rubber.

3. The bearing with noise reduction function according to claim 1, characterized in that: When two grooves are provided, the vertical distances between the two grooves and the bearing end faces to which they are close are equal.

4. The bearing with noise reduction function according to claim 1, characterized in that: When there are two or more grooves, the vertical distances between the grooves on both sides and the bearing end faces they are close to are equal.

5. A bearing with noise reduction function according to claim 1 or 4, characterized in that: When there are two or more grooves, the vertical net distances between two adjacent grooves are equal.

6. The bearing with noise reduction function according to claim 1, characterized in that: The vibration-damping components protrude from the top surface of the groove by the same distance.

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