Automobile hub bearing unit

Abstract

The utility model provides an automobile hub bearing unit, and belongs to the technical field of automobile accessories. The problem that a sensor in an existing automobile hub bearing unit is prone to being damaged due to external factors is solved. The automobile hub bearing unit comprises an outer ring, a flange is riveted to the left side of the outer ring, a steel ball is installed in an inner cavity of the outer ring, an inner ring is arranged in the inner cavity of the outer ring in a sleeved mode, a sensor dust cover is riveted to the right side of the outer ring, a protective sleeve is installed on the right side of the outer ring, a gear ring is fixedly arranged on the surface of the outer ring in a sleeved mode, and a sealing ring is arranged on the surface of the flange in a sleeved mode. The sealing device is good in sealing performance and high in strength, double sealing performance can be achieved at the joint of the outer ring and the flange through the sealing ring and the check ring, lubricating oil between the outer ring and the flange is prevented from leaking out, and meanwhile the sensor is arranged in the device in an injection molding mode, so that the sensor is conveniently protected and prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to an automobile wheel hub bearing unit. Background Art

[0002] The automobile wheel hub bearing unit is a key component in the automobile wheel hub assembly. For example, Chinese patent literature discloses a wheel hub unit bearing [application number: 201920773263.4; authorization announcement number: CN210118363U], which includes an inner sealing component, the inner sealing component has: an inner sealing ring with an inner sealing portion, an inner oil slinger, and a magnetic rubber encoder supported on the inner oil slinger, and an outer sealing component has: an outer sealing ring with an outer sealing portion formed in a cross-sectional shape formed by flipping the inner sealing portion, an outer oil slinger, and a non-magnetic rubber encoder equivalent portion formed in a cross-sectional shape formed by flipping the encoder and supported on the outer oil slinger.

[0003] The above-mentioned hub unit bearing is constructed so that the radial inner side of the encoder equivalent part is in close contact with the axial inner side of the rotating flange over the entire circumference, thereby suppressing the development cost of the sealing component and preventing moisture from entering between the rotating flange and the outer oil-slinging ring. However, the sealing performance is still not ideal, and leakage is likely to occur during use, which is not convenient for normal use of the device and protection of the sensor. During the operation of the device, the sensor is easily damaged by external factors, thereby reducing the service life of the device. Utility Model Content

[0004] The utility model aims to solve the above problems existing in the prior art and provide an automobile wheel hub bearing unit which has good sealing performance, high strength and is not prone to aging.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an automobile wheel hub bearing unit, comprising an outer ring, a flange riveted on the left side of the outer ring, a steel ball installed in the inner cavity of the outer ring, an inner ring sleeved in the inner cavity of the outer ring, a sensor dust cover riveted on the right side of the outer ring, a protective sleeve installed on the right side of the outer ring, a gear ring fixedly sleeved on the surface of the outer ring, and a sealing ring sleeved on the surface of the flange.

[0006] The automobile hub bearing unit can seal the connection between the outer ring and the flange through the sealing ring and the retaining ring, and performs double sealing to prevent the lubricating oil from leaking out of the connection between the outer ring and the flange, so as to facilitate the normal operation of the device. The sensor is directly injection-molded into the device, so as to provide good protection for the sensor and facilitate the normal operation of the sensor.

[0007] In the above-mentioned automobile wheel hub bearing unit, a mounting bolt is provided through the left side of the flange, and an anti-skid groove is provided on the right side of the surface of the mounting bolt. The mounting bolt can facilitate the installation of the flange and the fixing of the device, and the anti-skid groove can facilitate the reinforcement of the connection between the mounting bolt and the flange, and can effectively prevent the mounting bolt from detaching from the flange.

[0008] In the above-mentioned automobile wheel hub bearing unit, a knurled nut is embedded on the right side of the flange, and a support pad is welded on the right side of the knurled nut. The knurled nut can facilitate the installation of the bolt, and the bolt is screwed into the knurled nut to position the flange, and the support pad is convenient for supporting the bolt and facilitating the bolt to remain stable.

[0009] In the above-mentioned automobile wheel hub bearing unit, a retaining ring is arranged on the inner wall of the outer ring, and the surface of the steel ball contacts the inner ring. The protective sleeve can be convenient for protecting the device and can effectively prevent the sensor from being damaged.

[0010] In the above-mentioned automobile wheel hub bearing unit, a retainer is welded to the inner wall of the outer ring, and the surface of the steel ball is slidably connected to the retainer. The retainer can facilitate the support and positioning of the steel ball and effectively prevent the steel ball from shaking at the connection between the outer ring and the flange.

[0011] In the above-mentioned automobile wheel hub bearing unit, a dust cover is installed on the right side of the outer ring, and the side of the sealing ring away from the flange contacts the outer ring. The dust cover can play a dustproof role and can effectively prevent dust from entering the sensor dust cover, facilitating the normal operation of the sensor dust cover.

[0012] Compared with the prior art, the automobile wheel hub bearing unit has good sealing performance and high strength. The connection between the outer ring and the flange can be double-sealed by the sealing ring and the retaining ring to prevent the lubricating oil between the outer ring and the flange from leaking. At the same time, the sensor is injection-molded inside the device to protect the sensor and prevent the sensor from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial sectional view of the front view of the automobile hub bearing unit.

[0014] Figure 2 It is the right side view of the automobile wheel hub bearing unit.

[0015] Figure 3 This is the automobile wheel hub bearing unit Figure 1 A is an enlarged view of the middle image.

[0016] Figure 4 This is the automobile wheel hub bearing unit Figure 1 Enlarged view of B.

[0017] In the figure: 1. Outer ring; 2. Inner ring; 3. Flange; 4. Steel ball; 5. Protective cover; 6. Cage; 7. Gear ring; 8. Dust cover; 9. Mounting bolts; 10. Retaining ring; 11. Sealing ring; 12. Knurled nut; 13. Sensor dust cover. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the automobile wheel hub bearing unit is mainly composed of an outer ring 1, a flange 3 is riveted on the left side of the outer ring 1, a steel ball 4 is installed in the inner cavity of the outer ring 1, an inner ring 2 is sleeved in the inner cavity of the outer ring 1, a sensor dust cover 13 is riveted on the right side of the outer ring 1, a gear ring 7 is fixedly sleeved on the surface of the outer ring 1, a sealing ring 11 is sleeved on the surface of the flange 3, and a retaining ring 10 is provided on the inner wall of the outer ring 1.

[0020] In actual manufacturing, a mounting bolt 9 is provided through the left side of the flange 3, and an anti-slip groove is provided on the right side of the surface of the mounting bolt 9. A knurled nut 12 is inlaid on the right side of the flange 3, and a support pad is welded on the right side of the knurled nut 12.

[0021] A protective sleeve 5 is installed on the right side of the outer ring 1, and the surface of the steel ball 4 contacts the inner ring 2. A retaining frame 6 is welded to the inner wall of the outer ring 1, and the surface of the steel ball 4 is slidably connected to the retaining frame 6. A dust cover 8 is installed on the right side of the outer ring 1, and the side of the sealing ring 11 away from the flange 3 contacts the outer ring 1.

[0022] When in use, the device is installed by installing bolts 9 and knurled nuts 12. During the rotation of flange 3, flange 3 is supported by steel ball 4 to facilitate rotation of flange 3. During the rotation, the fluidity of lubricating oil between outer ring 1 and flange 3 is enhanced. The connection between outer ring 1 and flange 3 is sealed by sealing ring 11 and retaining ring 10 to prevent lubricating oil from leaking through the connection between outer ring 1 and flange 3. The sensor is protected by sensor dust cover 13 and dust cover 8 to prevent dust from entering the sensor dust cover 13, and the sensor is protected to prevent dust from entering the sensor and being damaged.

[0023] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. An automobile wheel hub bearing unit, comprising an outer ring (1), characterized in that: A flange (3) is riveted on the left side of the outer ring (1), a steel ball (4) is installed in the inner cavity of the outer ring (1), an inner ring (2) is sleeved in the inner cavity of the outer ring (1), a sensor dust cover (13) is riveted on the right side of the outer ring (1), a gear ring (7) is fixedly sleeved on the surface of the outer ring (1), a sealing ring (11) is sleeved on the surface of the flange (3), and a retaining ring (10) is provided on the inner wall of the outer ring (1).

2. The automotive wheel hub bearing unit according to claim 1, characterized in that: A mounting bolt (9) is provided through the left side of the flange (3), and an anti-slip groove is provided on the right side of the surface of the mounting bolt (9).

3. The automotive wheel hub bearing unit according to claim 1, characterized in that: A knurled nut (12) is inlaid on the right side of the flange (3), and a support pad is welded on the right side of the knurled nut (12).

4. The automotive wheel hub bearing unit according to claim 1, characterized in that: A protective sleeve (5) is installed on the right side of the outer ring (1), and the surface of the steel ball (4) is in contact with the inner ring (2).

5. The automobile wheel hub bearing unit according to claim 1, characterized in that: A retaining frame (6) is welded to the inner wall of the outer ring (1), and the surface of the steel ball (4) is slidably connected to the retaining frame (6).

6. The automotive wheel hub bearing unit according to claim 1, characterized in that: A dust cover (8) is installed on the right side of the outer ring (1), and a side of the sealing ring (11) away from the flange (3) is in contact with the outer ring (1).

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