Hub bearing

Abstract

The utility model provides a hub bearing which comprises an outer ring, an inner ring and a plurality of rollers, a flange part is arranged on the inner ring, the hub bearing further comprises a first ferrule and a second ferrule, the first ferrule and the second ferrule are sleeved on the inner ring, the inner ring, the first ferrule and the second ferrule are respectively provided with a first groove, a second groove and a third groove, and the first groove, the second groove and the third groove are communicated with each other. Three channels corresponding to the first groove, the second groove and the third groove respectively are formed in the outer ring at intervals, and three roller paths for filling a plurality of rollers are formed among the first groove, the second groove, the third groove and the channels. Aiming at the defects in the prior art, the utility model provides the hub bearing with stronger bearing capacity and impact resistance.

Description

Technical Field

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

[0002] Bearings are important components used for the rotation support of mechanical bodies and are widely used in various fields of our lives and work. For this reason, bearings have also evolved into many types to adapt to different working environments. Among them, wheel hub bearings are very important key components in automobiles. Their main functions are to bear weight and provide precise guidance for the rotation of the wheel hub. The wheel hub bearings in the existing technology usually include an inner ring with a flange, an outer ring and a plurality of rollers. Two raceways are formed between the inner ring and the outer ring for the plurality of rollers to be filled. However, under some requirements, the wheel hub bearings need to have stronger load-bearing capacity and impact resistance. In addition, when the installation space is limited, it is impossible to install additional matching bearings, so further optimization is needed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a hub bearing with enhanced load-bearing capacity and impact resistance.

[0004] To achieve the above-mentioned purpose, the utility model provides a wheel hub bearing, comprising an outer ring, an inner ring and a plurality of rollers, the inner ring being provided with a flange portion, and further comprising a first ring and a second ring, the first ring and the second ring being fitted on the inner ring, the inner ring, the first ring and the second ring being provided with a first groove, a second groove and a third groove respectively, the outer ring being spaced apart to form three grooves corresponding to the first groove, the second groove and the third groove respectively, and three raceways for filling a plurality of rollers are formed between the first groove, the second groove and the third groove and the groove.

[0005] The advantages of adopting the above technical solution are: the wheel hub bearing is designed to include a first ring and a second ring, as well as corresponding grooves and channels, thereby forming three raceways for a number of rollers to be filled, thereby improving the compactness of the product structure, making the structure of the wheel hub bearing more compact, reducing space occupancy, and utilizing limited space to make the bearing's load-bearing capacity and impact resistance stronger, and also making the rollers more evenly distributed, thereby improving the bearing's load-bearing capacity and better bearing the weight of the vehicle and various loads generated during driving.

[0006] The present invention can be further configured as follows: the first groove and the second groove are opened in a direction away from the flange portion, the third groove is opened in a direction toward the flange portion, and the three grooves are respectively arranged opposite to the corresponding first groove, second groove and third groove.

[0007] By further setting, by limiting the opening directions of the first groove, the second groove and the third groove, and allowing the three grooves to be arranged relative to the corresponding first groove, the second groove and the third groove respectively, the axial load capacity of the hub bearing can be improved. The first groove and the second groove are opened in the direction away from the flange part, and the third groove is opened in the direction of the flange part, which can better adapt to the needs under actual working conditions.

[0008] The present invention can be further configured as follows: the outer ring includes a first spacing protrusion and a second spacing protrusion, and the three channels are respectively formed between the first spacing protrusion, the second spacing protrusion and the inner wall of the outer ring.

[0009] Through further arrangement, the three grooves are respectively formed by the first spaced protrusions, the second spaced protrusions and the inner wall of the outer ring, which is convenient for processing. The outer ring itself can also limit the roller to a certain extent, making it easy to install the roller.

[0010] The utility model can be further configured as follows: a groove and a limiting portion are provided on the inner ring, the groove is for the first ring and the second ring to be fitted, the limiting portion is provided at the end away from the flange portion, the first ring abuts between the inner wall of the groove and the second ring, and the limiting portion extends radially and forms an abutment fit with the second ring.

[0011] Through further settings, a groove and a limiter are provided on the inner ring, so that the groove is used for fitting the first ring and the second ring, and the limiter is provided at the end away from the flange, so that the first ring is fitted on the groove and abuts against its inner wall, and then the second ring is fitted and abuts against the first ring, and finally the second ring is pressed against the second ring by the limiter to form the positioning of the first ring and the second ring, and the limiter can be processed and formed after assembling the first ring, the second ring and several rollers, so as to facilitate the assembly of the hub bearing.

[0012] The utility model can be further configured as follows: an outer sealing component and an inner sealing component are respectively provided between the two axial ends of the outer ring and the flange portion and the second ferrule.

[0013] Through further configuration, an outer sealing assembly and an inner sealing assembly are respectively provided between the flange portion and the second ferrule at both axial ends of the outer ring, so as to cope with different environments at both axial ends of the hub bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 For the embodiment of the utility model Figure 1 Enlarged view of part a;

[0016] Figure 3 For the embodiment of the utility model Figure 1 Enlarged view of part b;

[0017] Among them: outer ring 1; channel 11; first spaced protrusions 12; second spaced protrusions 13; inner ring 2; flange portion 21; first groove 22; groove portion 23, limit portion 24, roller 3; first ferrule 4; second groove 41; second ferrule 5; third groove 51; outer seal assembly 6; inner seal assembly 7. DETAILED DESCRIPTION

[0018] The embodiment of the wheel hub bearing of the utility model is as follows: Figure 1-3 As shown: it includes an outer ring 1, an inner ring 2 and several rollers 3, the inner ring 2 is provided with a flange portion 21, and also includes a first ring 4 and a second ring 5, the first ring 4 and the second ring 5 are fitted on the inner ring 2, the inner ring 2, the first ring 4, the second ring 5 are respectively provided with a first groove 22, a second groove 41 and a third groove 51, the outer ring 1 is formed with three grooves 11 corresponding to the first groove 22, the second groove 41 and the third groove 51, respectively, and three raceways for filling several rollers are formed between the first groove 22, the second groove 41 and the third groove 51 and the groove 11.

[0019] The first groove 22 and the second groove 41 are opened in a direction away from the flange portion 21 , the third groove 51 is opened in a direction toward the flange portion 21 , and the three channels 11 are respectively arranged opposite to the corresponding first groove 22 , second groove 41 and third groove 51 .

[0020] The outer ring 1 includes a first spacing protrusion 12 and a second spacing protrusion 13. The three grooves 11 are respectively formed between the first spacing protrusion 12, the second spacing protrusion 13 and the inner wall of the outer ring. In this embodiment, the groove corresponding to the first groove 22 is formed by the first spacing protrusion 12 cooperating with the inner wall of the outer ring, and the two grooves 11 corresponding to the second groove 41 and the third groove 51 are formed by the second spacing protrusion 13 and the inner wall of the outer ring, and the two grooves 11 are symmetrically arranged.

[0021] The inner ring 2 is provided with a groove 23 and a limiting portion 24. The groove 23 is for the first ring 4 and the second ring 5 to be mounted. The limiting portion 24 is provided at the end away from the flange portion 21. The first ring 4 abuts between the inner wall of the groove 23 and the second ring 5. The limiting portion 24 extends radially and forms an abutment fit with the second ring 5.

[0022] An outer sealing assembly 6 and an inner sealing assembly 7 are respectively provided between the two axial ends of the outer ring 1 and the flange portion 21 and the second ferrule 5 .

[0023] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A wheel hub bearing comprising an outer ring, an inner ring, and a plurality of rollers, wherein the inner ring is provided with a flange portion, characterized in that: It includes a first ring and a second ring, which are mounted on an inner ring. The inner ring, the first ring and the second ring are respectively provided with a first groove, a second groove and a third groove. The outer ring is spaced apart to form three grooves corresponding to the first groove, the second groove and the third groove respectively. Three raceways for a number of rollers to be filled are formed between the first groove, the second groove and the third groove.

2. The wheel hub bearing according to claim 1, characterized in that: The first groove and the second groove are opened in a direction away from the flange portion, the third groove is opened in a direction toward the flange portion, and the three grooves are respectively arranged opposite to the corresponding first groove, second groove and third groove.

3. The wheel hub bearing according to claim 1 or 2, characterized in that: The outer ring includes a first spacing protrusion and a second spacing protrusion, and the three channels are respectively formed between the first spacing protrusion, the second spacing protrusion and the inner wall of the outer ring.

4. The wheel hub bearing according to claim 1 or 2, characterized in that: The inner ring is provided with a groove and a limiting portion. The groove is for the first ring and the second ring to fit into. The limiting portion is provided at the end away from the flange portion. The first ring abuts between the inner wall of the groove and the second ring. The limiting portion extends radially and forms an abutment fit with the second ring.

5. The wheel hub bearing according to claim 1, characterized in that: An outer sealing component and an inner sealing component are respectively provided between the two axial ends of the outer ring and the flange portion and the second ferrule.

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