Three-generation three-row hub ball bearing

Abstract

The utility model relates to the field of hub bearings, and discloses a three-generation three-row hub ball bearing, which comprises a flange outer ring, a flange inner ring, a raceway inner ring and a steel ball, the raceway inner ring is nested on the flange inner ring, a first inner raceway is processed on the outer circle of the raceway inner ring, a second inner raceway and a third inner raceway are processed on the outer circle of the flange inner ring, and the steel ball is embedded in the first inner raceway. The flange outer ring is sleeved outside the raceway inner ring and the flange inner ring, three rows of outer raceways corresponding to the first inner raceway, the second inner raceway and the third inner raceway are processed on the inner circle of the flange outer ring, three rows of steel balls are arranged between the inner raceways and the outer raceways side by side, and the diameters of the three rows of steel balls are the same. According to the three-generation double-row hub ball bearing, the bearing capacity and reliability of the hub bearing can be further improved in a limited space, and the problem that the bearing capacity and reliability of an existing three-generation double-row hub ball bearing are still insufficient under the high-speed operation condition is solved.

Description

Technical Field

[0001] The utility model relates to the field of wheel hub bearings, in particular to a three-generation three-row wheel hub ball bearing. Background Art

[0002] Wheel hub bearing is one of the key parts of automobiles, and its performance affects the running performance of the whole vehicle. The existing technology mostly adopts the third generation double row wheel hub ball bearings.

[0003] The third-generation double-row hub ball bearing usually consists of a flange outer ring with a flange connected to the steering knuckle, a flange inner ring with a flange connected to the brake disc, a raceway inner ring, sealing rings on both sides, and two rows of steel balls and a cage inside the ring. The third-generation double-row hub ball bearing also integrates ABS sensors, and the overall integration level is relatively high. However, the existing third-generation double-row hub ball bearings still have insufficient load-bearing capacity and reliability under high-speed operation conditions, and it is difficult to meet the needs of automobile operation. Utility Model Content

[0004] The utility model is intended to provide a third-generation three-row hub ball bearing to further improve the load-bearing capacity and reliability of the hub bearing within a limited space, and to solve the problem that the existing third-generation double-row hub ball bearings still have insufficient load-bearing capacity and reliability under high-speed operating conditions.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a third-generation three-row hub ball bearing, comprising a flange outer ring, a flange inner ring, a raceway inner ring and steel balls, the raceway inner ring is nested on the flange inner ring, the outer circle of the raceway inner ring is processed with a first inner raceway, the outer circle of the flange inner ring is processed with a second inner raceway and a third inner raceway, the flange outer ring is sleeved on the outer side of the raceway inner ring and the flange inner ring, three rows of outer raceways corresponding to the first inner raceway, the second inner raceway and the third inner raceway are processed on the inner circle of the flange outer ring, and three rows of steel balls are arranged side by side between the inner raceway and the outer raceway, and the diameters of the three rows of steel balls are the same.

[0006] Preferably, as an improvement, the rotation center diameters of the first and second rows of steel balls are the same, and the rotation center diameter of the third row of steel balls is larger than the rotation center diameters of the first and second rows of steel balls.

[0007] Preferably, as an improvement, the large shoulder of the second inner raceway is lower than the small shoulder of the third inner raceway.

[0008] Preferably, as an improvement, the large shoulder of the second outer raceway serves as the small shoulder of the third outer raceway.

[0009] Preferably, as an improvement, the first inner raceway is in opposite directions to the second inner raceway, and the first outer raceway is in opposite directions to the second outer raceway.

[0010] Preferably, as an improvement, the first inner raceway has the same size as the second inner raceway, and the first outer raceway has the same size as the second outer raceway.

[0011] Preferably, as an improvement, the rolling contact angles of the first row of steel balls, the second row of steel balls and the third row of steel balls are the same.

[0012] Preferably, as an improvement, the rolling contact angles of the first row of steel balls and the second row of steel balls are in opposite directions.

[0013] Preferably, as an improvement, the rolling contact angle of the third row of steel balls is in the same direction as the rolling contact angle of the second row of steel balls.

[0014] Preferably, as an improvement, the axial end of the inner ring of the flange is rolled to have a flanging to axially compress the inner ring of the raceway.

[0015] The principle and advantages of this scheme are: in actual application, the first row of steel balls and the second row of steel balls are used as two rows of angular contact ball bearings designed in a back-to-back manner, and the third row of steel balls is used as a row of junction ball bearings with a larger rotation center diameter, totaling three rows of angular contact ball bearings, which has one more row of steel balls compared to the currently common three-generation double-row hub ball bearings. By improving the structure of the inner raceway and the outer raceway, using three rows of steel balls in a limited space, and using different rotation center diameters, the load-bearing capacity and operating reliability of the automobile hub bearing are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The figure marks in the drawings of the specification include: flange inner ring 1, flange outer ring 2, raceway inner ring 3, first row of steel balls 4, second row of steel balls 5, third row of steel balls 6, first inner raceway 7, second inner raceway 8, third inner raceway 9, first outer raceway 10, second outer raceway 11, third outer raceway 12, contact angle 13, and flange 14.

[0019] The embodiment is basically as shown in the attached Figure 1As shown: a three-generation three-row hub ball bearing, including a flange outer ring 2, a flange inner ring 1, a raceway inner ring 3 and steel balls, the raceway inner ring 3 is nested on the flange inner ring 1, and the left shaft end of the flange inner ring 1 is rolled and processed with a flange 14 to axially press the raceway inner ring 3 on the flange inner ring 1. The outer circle of the raceway inner ring 3 is processed with a first inner raceway 7, and the outer circle of the flange inner ring 1 is processed with a second inner raceway 8 and a third inner raceway 9. The first inner raceway 7 is opposite to the second inner raceway 8, and the first inner raceway 7 and the second inner raceway 8 have the same size, and the large shoulder of the second inner raceway 8 is lower than the small shoulder of the third inner raceway 9. The flange outer ring 2 is sleeved on the outer side of the raceway inner ring 3 and the flange inner ring 1. The inner circle of the flange outer ring 2 is processed with three rows of outer raceways corresponding to the first inner raceway 7, the second inner raceway 8 and the third inner raceway 9. The first outer raceway 10 is opposite to the second outer raceway 11 in direction and has the same size as the second outer raceway 11. The large shoulder of the second outer raceway 11 serves as the small shoulder of the third outer raceway 12. Three rows of steel balls are arranged side by side between the inner raceway and the outer raceway, and the diameters of the three rows of steel balls are the same. The center diameters of the first row of steel balls 4 and the second row of steel balls 5 are the same, and the center diameters of the third row of steel balls 6 are larger than the center diameters of the first row of steel balls 4 and the second row of steel balls 5. The rolling contact angles 13 of the first row of steel balls 4, the second row of steel balls 5 and the third row of steel balls 6 are the same in size, the rolling contact angles 13 of the first row of steel balls 4 and the second row of steel balls 5 are in opposite directions, and the rolling contact angle 13 of the third row of steel balls 6 is in the same direction as the rolling contact angle 13 of the second row of steel balls 5.

[0020] The specific implementation process is as follows: the inner ring 1 of the flange is connected to the brake disc through the flange plate, the outer ring 2 of the flange is connected to the steering knuckle through the flange plate, the inner ring 3 of the raceway and the inner ring 1 of the flange form three rows of inner raceways, and the inner side of the outer ring 2 of the flange is processed with three rows of outer raceways to form a stepped raceway. The inner ring 3 of the raceway is limited and pressed by the flange 14 at the end of the inner ring 1 of the flange to tighten the entire bearing. The steel balls are distributed in the three rows of raceways to form a three-generation three-row hub ball bearing. The first inner raceway 7 is consistent with the second inner raceway 8 and has opposite directions. The outer ring is a three-row raceway. The first outer raceway 10 and the second outer raceway 11 are the same and have opposite directions. The large shoulder of the second outer raceway 11 serves as the small shoulder of the third outer raceway 12. The contact angle 13 of the three rows of steel balls is the same. The first and second rows form a back-to-back angular contact ball bearing. The third row is an angular contact ball bearing with a larger rotation center diameter. Compared with the currently common three-generation double-row hub ball bearings, there is one more row of steel balls, which improves the bearing capacity of the automobile hub bearing in a limited space.

[0021] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A third-generation three-row hub ball bearing, comprising a flange outer ring, a flange inner ring, a raceway inner ring and steel balls, characterized in that: The inner ring of the raceway is nested on the inner ring of the flange, the first inner raceway is machined on the outer circle of the inner ring of the raceway, the second inner raceway and the third inner raceway are machined on the outer circle of the inner ring of the flange, the outer ring of the flange is sleeved on the outer side of the inner ring of the raceway and the inner ring of the flange, three rows of outer raceways corresponding to the first inner raceway, the second inner raceway and the third inner raceway are machined on the inner circle of the outer ring of the flange, three rows of steel balls are arranged side by side between the inner raceway and the outer raceway, and the diameters of the three rows of steel balls are the same.

2. A three-generation three-row hub ball bearing according to claim 1, characterized in that: The rotation center diameters of the first row of steel balls and the second row of steel balls are the same, and the rotation center diameter of the third row of steel balls is larger than the rotation center diameters of the first row of steel balls and the second row of steel balls.

3. A three-generation three-row hub ball bearing according to claim 2, characterized in that: The large shoulder of the second inner raceway is lower than the small shoulder of the third inner raceway.

4. A three-generation three-row hub ball bearing according to claim 3, characterized in that: The large shoulder of the second outer raceway serves as the small shoulder of the third outer raceway.

5. A three-generation three-row hub ball bearing according to claim 4, characterized in that: The first inner raceway is opposite to the second inner raceway in direction, and the first outer raceway is opposite to the second outer raceway in direction.

6. A three-generation three-row hub ball bearing according to claim 5, characterized in that: The first inner raceway has the same size as the second inner raceway, and the first outer raceway has the same size as the second outer raceway.

7. A three-generation three-row hub ball bearing according to claim 6, characterized in that: The rolling contact angles of the first row of steel balls, the second row of steel balls and the third row of steel balls are the same.

8. The third-generation three-row hub ball bearing according to claim 7, characterized in that: The rolling contact angles of the first row of steel balls and the second row of steel balls are in opposite directions.

9. A three-generation three-row hub ball bearing according to claim 8, characterized in that: The rolling contact angle of the third row of steel balls is in the same direction as the rolling contact angle of the second row of steel balls.

10. The third-generation three-row hub ball bearing according to claim 9, characterized in that: The inner ring of the flange is rolled and machined with a flange at the shaft end to axially compress the inner ring of the raceway.

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