Automobile hub bearing

Abstract

The utility model provides an automobile hub bearing, and belongs to the technical field of automobile hub bearings. The problem that an existing automobile hub bearing is short in service life is solved. The automobile hub bearing comprises an outer ring, an inner cylinder is movably installed on the right side of an inner cavity of the outer ring, a right flange is welded to the right side of the surface of the inner cylinder in a sleeved mode, a cavity is formed in the right flange, and an installation bolt is arranged in an inner cavity of the cavity in a die-casting mode. The utility model has the advantages of long service life and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, especially relates to an automobile wheel hub bearing. BACKGROUND

[0002] The automobile wheel hub bearing is a very important part that bears axial load and radial load and provides accurate guidance for the rotation of the wheel hub.

[0003] For example, the applicant designs an automobile wheel hub bearing and applies for a patent [application number: 202421133583.0; authorization announcement number: CN222208657U], which comprises an inner ring and an outer ring, the outer ring is movably sleeved on the surface of the inner ring, a sealing cover is sleeved on the right side of the surface of the outer ring, the top and the bottom of the sealing cover are both fixedly connected with a positioning mechanism, positioning grooves are formed in the right side of the top and the bottom of the surface of the outer ring, a sealing groove is formed in the right side of the surface of the outer ring, a sealing ring is sleeved on the right side of the surface of the outer ring, a groove is formed in the inner wall of the sealing cover, an air bag is placed in the inner cavity of the groove, and a gas nozzle is communicated with the top of the air bag.

[0004] The automobile wheel hub bearing has good sealing performance, and the sensor is not easy to be eroded by water vapor, but the bolt is a straight grain knurl interference pressure anti-loose, and the straight tooth knurl interference amount is used to prevent the bolt from coming out. This design can still cause the bolt to loosen and slip due to frequent vibration after long-term use. SUMMARY

[0005] The utility model aims at the above-mentioned problems existing in the prior art, and provides an automobile wheel hub bearing which has better anti-loose and anti-slip effects, a more compact structure, more stable use and longer service life.

[0006] The utility model discloses a kind of automobile wheel hub bearings, including outer ring, the right side movable mounting of the inner cavity of outer ring has inner tube, the right side welding sleeve of the surface of inner tube has right flange, the inside of right flange is equipped with cavity, the inner cavity of cavity is pressure casting with mounting bolt.

[0007] The automobile wheel hub bearing is mainly provided with outer ring, inner tube, right flange, cavity and mounting bolt on the bottom plate. The outer ring, inner tube, right flange, cavity and mounting bolt make the automobile wheel hub bearing have better anti-loose and anti-slip effects, a more compact structure, more stable use and longer service life.

[0008] In the above-mentioned automobile wheel hub bearing, the outer surface of the inner tube is sleeved with a gear ring, and the left side of the inner ring is fixedly connected with a limiting check ring by riveting. In actual application, the gear ring can be easily contacted with the sensor contact inserted into the outer ring, and the information of the rotating inner tube can be monitored.

[0009] In the automobile wheel hub bearing, the left side of the outer surface of the inner ring is sleeved with a dust cover, and the left side of the outer surface of the outer ring is sleeved with a first sealing ring. In actual application, the dust cover is arranged to have a dustproof function, so that the external dust can be prevented from entering the inner part of the outer ring, and the first sealing ring is protected. The first sealing ring is arranged to improve the sealing performance between the outer ring and the inner ring.

[0010] In the automobile wheel hub bearing, the right side of the outer surface of the outer ring is sleeved with a second sealing ring, and the middle part of the outer surface of the outer ring is welded with a left flange. In actual application, the second sealing ring is arranged to improve the sealing performance between the outer ring and the inner cylinder, and the left flange is arranged to facilitate the connection and installation of the outer ring.

[0011] In the automobile wheel hub bearing, the right side of the inner cavity of the outer ring is fixedly connected with a retainer, and the inner cavities of the left and right retainers are respectively installed with a first tapered roller and a second tapered roller. The surfaces of the first tapered roller and the second tapered roller are in sliding connection with the inner cylinder. In actual application, the retainers are arranged to facilitate the installation of the first tapered roller and the second tapered roller. The outer ring is made of high-strength pressure-cast aluminum alloy, and the overall weight after production is 1 / 3 of that of traditional high-quality carbon structural steel.

[0012] In the automobile wheel hub bearing, the left side of the inner cavity of the outer ring is installed with an inner ring, the left side of the inner cylinder penetrates to the left side of the inner ring and is welded with a limiting ring, and the inner cavity of the inner cylinder is provided with an inner tooth. In actual application, the inner tooth is arranged to be connected with the installed rotating rod, so that the connection is more firm.

[0013] Compared with the prior art, the automobile wheel hub bearing has the advantages that: in the working process, the anti-loose and anti-slip effect is better, the structure is more compact, the use is more stable, and the service life is long. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a sectional view of the automobile wheel hub bearing.

[0015] Figure 2 is a sectional view of the automobile wheel hub bearing Figure 1 A enlarged view.

[0016] Figure 3 is a sectional view of the automobile wheel hub bearing.

[0017] Figure 4 is a left view of the automobile wheel hub bearing.

[0018] In the figure: 1, outer ring; 2, inner ring; 3, left flange; 4, gear ring; 5, right flange; 6, mounting bolt; 7, second sealing ring; 8, retainer; 9, first tapered roller; 10, dust cover; 11, cavity; 12, first sealing ring; 13, limit stop ring; 14, second tapered roller; 15, inner tube. DETAILED DESCRIPTION

[0019] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0020] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the automobile hub bearing comprises an outer ring 1, the right side of the inner cavity of the outer ring 1 movably mounted with an inner tube 15, the right side of the surface of the inner tube 15 welded with a right flange 5, the inside of the right flange 5 provided with a cavity 11, and the inner cavity of the cavity 11 pressure cast with a mounting bolt 6.

[0021] Further, the outer surface of the inner tube 15 is sleeved with a gear ring 4, and the left side of the inner ring 2 is fixedly connected with the limit stop ring 13 through riveting. The left side of the outer surface of the inner ring 2 is sleeved with a dust cover 10, and the left side of the outer surface of the outer ring 1 is sleeved with a first sealing ring 12.

[0022] The right side of the outer surface of the outer ring 1 is sleeved with a second sealing ring 7, and the middle part of the outer surface of the outer ring 1 is welded with a left flange 3. The right side of the inner cavity of the outer ring 1 is fixedly connected with a retainer 8, and the inner cavities of the left and right two retainers 8 are respectively mounted with a first tapered roller 9 and a second tapered roller 14. The surfaces of the first tapered roller 9 and the second tapered roller 14 are slidably connected with the inner tube 15.

[0023] The left side of the inner cavity of the outer ring 1 is mounted with an inner ring 2, the left side of the inner tube 15 penetrates to the left side of the inner ring 2 and is welded with a limit stop ring 13, and the inner cavity of the inner tube 15 is provided with internal teeth.

[0024] In actual manufacturing, the end of the mounting bolt 6 is designed as a hexagon and integrally die-cast with the right flange 5 as a non-detachable type, so that the end of the mounting bolt 6 is closely fitted with the inner wall of the cavity 11 to avoid the phenomenon of slipping, and the end of the mounting bolt 6 is die-cast into the right flange 5, and the anti-extrusion force is better. The inner ring 2 is sleeved on the left side of the surface of the inner cylinder 15, and after the sleeving is completed, the limiting ring 13 on the left side of the inner cylinder 15 is riveted and fixed with the left side of the inner ring 2. The inner cylinder 15 and the inner ring 2 form an integral whole through riveting, so that the structure of the bearing is more compact, there is no reduction in the processing process, and the play is more stable. Then, the outer ring 1 is sleeved on the surface of the inner ring 2 and the inner cylinder 15, so that the first conical roller 9 and the second conical roller 14 in the interior are in sliding contact with the inner ring 2 and the inner cylinder 15, respectively. In this way, during rotation, since the inner cylinder 15 and the inner ring 2 are an integral whole, there is no wear between the inner cylinder 15 and the inner ring 2, thereby prolonging the service life of the bearing.

[0025] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A motor vehicle wheel hub bearing comprising an outer ring (1), characterised in that: The right side of the inner cavity of the outer ring (1) movably installs an inner cylinder (15), the right side of the surface of the inner cylinder (15) is welded with a right flange (5), the inside of the right flange (5) is provided with a cavity (11), the cavity (11) is pressure cast with a mounting bolt (6), the left side of the inner cavity of the outer ring (1) is provided with an inner ring (2), the left side of the inner cylinder (15) penetrates to the left side of the inner ring (2) and is welded with a limiting baffle ring (13), the inner cavity of the inner cylinder (15) is provided with an inner tooth.

2. A wheel hub bearing according to claim 1, wherein: The outer surface of the inner cylinder (15) is sleeved with a gear ring (4), the left side of the inner ring (2) is fixedly connected with the limiting baffle ring (13) through riveting.

3. A wheel bearing assembly for a vehicle as set forth in claim 1 wherein: The left side of the outer surface of the inner ring (2) is sleeved with a dust cover (10), the left side of the outer surface of the outer ring (1) is sleeved with a first sealing ring (12).

4. The automotive wheel hub bearing of claim 1, wherein: The right side of the outer surface of the outer ring (1) is sleeved with a second sealing ring (7), the middle part of the outer surface of the outer ring (1) is welded with a left flange (3).

5. The automotive wheel hub bearing of claim 1, wherein: The right side of the inner cavity of the outer ring (1) is fixedly connected with a retainer (8), the inner cavities of the left and right two retainers (8) are respectively provided with a first tapered roller (9) and a second tapered roller (14), the surfaces of the first tapered roller (9) and the second tapered roller (14) are slidably connected with the inner cylinder (15).

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