Automobile hub bearing with good sealing performance
By designing the first sealing ring, dustproof plate, second sealing ring, limiting mechanism and annular groove in the automobile hub bearing, the leakage problem caused by the easy folding of the sealing lip in the prior art is solved, and better sealing is achieved and service life.
Patent Information
- Application Number
- CN202421133657.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The sealing lip of existing automobile wheel hub bearings is prone to fold, causing mud and water to enter the inside of the bearing, causing leakage and fatigue damage, and has a low service life.
An automobile hub bearing including a bearing body, an outer ring and an inner ring is designed, and a first sealing ring, a dustproof plate, a second sealing ring, a limiting mechanism and an annular groove are provided to prevent mud and water from entering and improve sealing. .
It effectively avoids mud and water entering the bearing, improves sealing, extends service life, and reduces friction, thereby improving the performance of the bearing.
Smart Images
Figure CN222502443U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to an automobile wheel hub bearing with good sealing performance. Background Art
[0002] The wheel hub is the part of the wheel center where the axle is installed, which is often called the wheel rim or steel rim. The structure of the automobile wheel hub is inseparable from the use of bearings. The main function of the automobile wheel hub bearing is to bear the weight of the car and provide precise guidance for the rotation of the wheel hub. The wheel hub bearing needs to bear both axial load and radial load, which is crucial to the driving performance and safety of the car.
[0003] The sealing lip of the existing automobile wheel hub bearing is prone to folding, which allows mud and water to enter the bearing and cause leakage. The bearing suffers fatigue damage and has a short service life. In addition, the friction between the sealing lip and the inside of the bearing is large, which is not conducive to improving the sealing performance. Summary of the invention
[0004] The utility model aims to solve the above problems existing in the prior art and to provide an automobile wheel hub bearing which can prevent muddy water from entering and causing leakage, has good sealing performance and is conducive to extending the service life.
[0005] The purpose of the utility model can be achieved through the following technical solutions: a car wheel hub bearing with good sealing performance, comprising a bearing body, an outer ring and an inner ring, a first sealing ring is arranged between the inner ring and the outer ring, a dustproof plate is arranged on the left side of the first sealing ring, the left side of the dustproof plate is fixedly connected to a limiting mechanism, a second sealing ring is arranged on the right side of the outer ring, a retaining frame is arranged in the inner cavity of the outer ring, a tapered roller is movably connected to the surface of the retaining frame, a gear ring is fixedly connected to the surface of the bearing body, and a sensor data line is penetrated through the top of the outer ring.
[0006] The automobile wheel hub bearing with good sealing performance is mainly provided with a first sealing ring, a dustproof plate, a second sealing ring, a limiting rod and an annular groove. The first sealing ring, the dustproof plate, the second sealing ring, the limiting rod and the annular groove can prevent muddy water from entering and causing leakage. The sealing performance is good, which is beneficial to prolonging the service life of the automobile wheel hub bearing.
[0007] In the above-mentioned automobile wheel hub bearing with good sealing performance, the limiting mechanism includes a limiting rod, the number of the limiting rods is four, the side opposite to the right side of the limiting rod is fixedly connected to the dustproof plate, the right side of the limiting rod is fixedly connected to the dustproof plate, the left side of the outer ring and the left side of the inner ring are both provided with annular grooves, and the side opposite to the right side of the limiting rod extends to the inner cavity of the annular groove. In practical applications, by setting the limiting rod and the annular groove, the movement of the dustproof plate can be limited to avoid uneven extrusion of the first sealing ring by the dustproof plate, which may affect the performance of the first sealing ring.
[0008] In the above-mentioned automobile wheel hub bearing with good sealing performance, a first flange is arranged on the right side of the bearing body, and a second flange is arranged on the surface of the outer ring. In practical applications, by arranging the first flange and the second flange, the bearing can be connected to an external device, which is beneficial to the molding of the automobile wheel hub.
[0009] In the above-mentioned automobile wheel hub bearing with good sealing performance, the surface of the tapered roller is in contact with the outer ring and the inner ring respectively, and the dustproof plate is clamped between the outer ring and the inner ring. In practical applications, by providing the tapered roller and the cage, the bearing can play the role of supporting the rotating shaft for rotation, thereby improving the practicality of the bearing.
[0010] In the above-mentioned automobile wheel hub bearing with good sealing performance, the second sealing ring is in contact with the bearing body. In practical applications, by setting the second sealing ring, the sealing performance of the bearing can be improved, and the service life of the bearing can be increased. The number of teeth of the gear ring is thirty-three. In practical applications, by setting the sensor data line and the gear ring, the bearing speed can be detected, which improves the practicality of the device.
[0011] In the above-mentioned automobile wheel hub bearing with good sealing performance, bolts are provided through the right side of the first flange. In practical application, the flange connection can be performed by providing bolts, which is beneficial to the use of the bearing, and the number of the bolts is six.
[0012] Compared with the prior art, the automobile wheel hub bearing with good sealing performance has the advantages of being able to prevent mud and water from entering and causing leakage during operation, having good sealing performance, and being conducive to extending the service life of the automobile wheel hub bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a cross-sectional view of the automobile wheel hub bearing with good sealing performance.
[0014] Figure 2 It is a partial cross-sectional view of the automobile wheel hub bearing with good sealing performance.
[0015] Figure 3It is the left view of the automotive wheel hub bearing with good sealing performance.
[0016] In the figure: 1, bearing body; 2, outer ring; 3, inner ring; 4, first sealing ring; 5, dust-proof plate; 6, limiting mechanism; 7, second sealing ring; 8, cage; 9, tapered roller; 10, gear ring; 11, sensor data line; 12, limiting rod; 13, annular groove; 14, first flange; 15, second flange; 16, bolt. Specific embodiments
[0017] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.
[0018] As Figure 1 、 Figure 2 and Figure 3 shown, the automotive wheel hub bearing with good sealing performance of the present invention includes a bearing body 1, an outer ring 2 and an inner ring 3. A first sealing ring 4 is arranged between the inner ring 3 and the outer ring 2. A dust-proof plate 5 is arranged on the left side of the first sealing ring 4. A limiting mechanism 6 is fixedly connected to the left side of the dust-proof plate 5. A second sealing ring 7 is arranged on the right side of the outer ring 2. A cage 8 is arranged in the inner cavity of the outer ring 2. Tapered rollers 9 are movably connected to the surface of the cage 8. A gear ring 10 is fixedly connected to the surface of the bearing body 1. A sensor data line 11 penetrates through the top of the outer ring 2.
[0019] Further elaborating, the limiting mechanism 6 includes limiting rods 12. The number of limiting rods 12 is four. The limiting rods 12 are U-shaped. The opposite side of the right side of the limiting rod 12 is fixedly connected to the dust-proof plate 5. Annular grooves 13 are opened on the left sides of both the outer ring 2 and the inner ring 3. The opposite side of the right side of the limiting rod 12 extends into the inner cavity of the annular groove 13.
[0020] A first flange 14 is arranged on the right side of the bearing body 1. A second flange 15 is arranged on the surface of the outer ring 2; The surfaces of the tapered rollers 9 are respectively in contact with the outer ring 2 and the inner ring 3. The dust-proof plate 5 is clamped between the outer ring 2 and the inner ring 3; The second sealing ring 7 is in contact with the bearing body 1. The number of teeth of the gear ring 10 is thirty-three; Bolts 16 penetrate through the right side of the first flange 14. The number of bolts 16 is six.
[0021] During actual manufacturing, the operator inserts the dustproof plate 5 between the inner ring 3 and the outer ring 2 so that the limiting rod 12 is inserted into the annular groove 13. The annular groove 13 limits the dustproof plate 5. When the dustproof plate 5 contacts the first sealing ring 4, the first sealing ring 4 is evenly stressed, and the dustproof plate 5 itself can prevent mud and water from entering the interior and causing fatigue damage, which is beneficial to extending the service life of the bearing. The first sealing ring 4 and the second sealing ring 7 can seal the bearing connection, which is beneficial to the use of the bearing. The sealing lip structure of the first sealing ring 4 is arranged in parallel, which plays an anti-folding role, and the service life of the sealing lip is also extended. The sealing lip is pre-coated with lubricating oil, which can reduce the dry friction without lubrication between the bearing and the inner ring 3 and the outer ring 2. The surface roughness Ra≤1.0 can effectively reduce friction and achieve better anti-leakage effect. The sensor data line 11 is connected to the external sensor, and the bearing speed is detected by detecting the speed of the gear ring 10.
[0022] 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 with good sealing performance, comprising a bearing body (1), an outer ring (2) and an inner ring (3), characterized in that: A first sealing ring (4) is arranged between the inner ring (3) and the outer ring (2), a dustproof plate (5) is arranged on the left side of the first sealing ring (4), the left side of the dustproof plate (5) is fixedly connected to a limiting mechanism (6), a second sealing ring (7) is arranged on the right side of the outer ring (2), a retaining frame (8) is arranged in the inner cavity of the outer ring (2), a tapered roller (9) is movably connected to the surface of the retaining frame (8), a gear ring (10) is fixedly connected to the surface of the bearing body (1), and a sensor data line (11) is arranged through the top of the outer ring (2).
2. The automobile wheel hub bearing with good sealing performance according to claim 1, characterized in that: The limiting mechanism (6) includes a limiting rod (12), the number of the limiting rods (12) is four, the right side opposite to the limiting rod (12) is fixedly connected to the dustproof plate (5), the left side of the outer ring (2) and the left side of the inner ring (3) are both provided with an annular groove (13), and the right side opposite to the limiting rod (12) extends to the inner cavity of the annular groove (13).
3. The automobile wheel hub bearing with good sealing performance according to claim 1, characterized in that: A first flange (14) is provided on the right side of the bearing body (1), and a second flange (15) is provided on the surface of the outer ring (2).
4. The automobile wheel hub bearing with good sealing performance according to claim 1, characterized in that: The surfaces of the tapered roller (9) are in contact with the outer ring (2) and the inner ring (3) respectively, and the dustproof plate (5) is clamped between the outer ring (2) and the inner ring (3).
5. The automobile wheel hub bearing with good sealing performance according to claim 1, characterized in that: The second sealing ring (7) is in contact with the bearing body (1), and the number of teeth of the gear ring (10) is thirty-three.
6. The automobile wheel hub bearing with good sealing performance according to claim 3, characterized in that: Bolts (16) are provided through the right side of the first flange (14), and the number of the bolts (16) is six.