Automobile hub bearing

Abstract

The utility model provides an automobile hub bearing which relates to the field of automobile hub bearings and comprises an inner ring and an outer ring, the inner ring is sleeved in the outer ring, an inner flange plate is arranged at the tail end of the outer side of the inner ring, threaded holes are formed in the circumference of the inner flange plate at equal angles and used for connecting a hub, and an outer flange plate is arranged at the tail end of the inner side of the outer ring and used for connecting a hub. Threaded holes are formed in the circumference of the outer flange plate at equal angles and used for being connected with a steering knuckle, a plurality of inner ring channels and a plurality of outer ring channels are formed in the outer side of the inner ring and the interior of the outer ring respectively, retainers are arranged in the inner ring channels and the corresponding outer ring channels, balls are contained in the retainers, and the inner ring channels and the outer ring channels are communicated through the balls. A plurality of fan blades are arranged on the circumference of the end face of the inner side of the inner flange plate at equal angles, and heat dissipation holes are formed in the upper circumference of the outer ring at equal angles. And air is supplied to the heat dissipation holes to perform air-cooling heat dissipation on the bearing, so that the temperature is prevented from being too high after long-time rotation, and the service life of the bearing is prolonged.

Description

Technical Field

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

[0002] The automobile wheel hub bearing (or wheel bearing) is a mechanical component used to connect the automobile wheel and the axle. It mainly consists of two parts: the inner ring and the outer ring. The center hole of the inner ring is connected to the drive shaft, the inner ring flange is connected to the wheel hub, and the outer ring flange is connected to the steering knuckle. The function of the wheel hub bearing is to support the weight of the car and enable the wheel to rotate freely.

[0003] Wheel hub bearings can be ball bearings, roller bearings or spherical roller bearings. The main difference between ball bearings and roller bearings is the shape of the rolling elements. Ball bearings use spherical rolling elements, while roller bearings use cylindrical or conical rolling elements. Spherical roller bearings combine the characteristics of ball bearings and roller bearings, and their rolling elements are spherical rollers.

[0004] Automobile wheel hub bearings need to bear huge loads when the vehicle is running, so they need to have good wear resistance, impact resistance and corrosion resistance. However, when the vehicle is running for a long time, the bearing temperature will inevitably rise due to friction, which will affect the bearing performance. In severe cases, the ball or cage will be deformed due to long-term heat and produce noise. In addition, the sealing performance of the wheel hub bearing is also very important to prevent dust, moisture and impurities from entering the bearing and affecting its performance and life. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an automobile wheel hub bearing, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: an automobile wheel hub bearing, comprising an inner ring and an outer ring, wherein the inner ring is sleeved inside the outer ring: an inner flange is arranged at the outer end of the inner ring, threaded holes are provided at equal angles on the circumference of the inner flange for connecting to the wheel hub, an outer flange is arranged at the inner end of the outer ring, threaded holes are provided at equal angles on the circumference of the outer flange for connecting to the steering knuckle, a plurality of inner ring grooves and outer ring grooves are respectively provided on the outer side of the inner ring and inside the outer ring, a retaining frame is arranged in the inner ring groove and the corresponding outer ring groove, balls are accommodated in the retaining frame, a plurality of fan blades are provided at equal angles on the circumference of the inner end face of the inner flange, and heat dissipation holes are provided at equal angles on the upper circumference of the outer ring.

[0009] Preferably, an oil storage tank 1 is provided between a plurality of the inner circle grooves, and an oil storage tank 2 is provided between a plurality of the outer circle grooves.

[0010] Preferably, an elastic sealing ring 1 is sleeved on the outer diameter of the inner ring, and an elastic sealing ring 2 is arranged on the inner end surface of the inner ring, and gaps are left between the elastic sealing ring 1 and the elastic sealing ring 2 and the inner hole of the outer ring.

[0011] Preferably, a drive shaft mounting hole is provided at the center of the inner ring for connecting the drive shaft, a spline groove is provided on the circumference of the drive shaft mounting hole, and a chamfer surface is provided on the outer end surface of the drive shaft mounting hole.

[0012] Preferably, a connecting groove is provided at the center of the outer end face of the outer flange, and connecting holes are provided at equal angles on the circumference of the end face of the connecting groove. A dustproof sealing ring is connected to the connecting hole, and a gap is left between the dustproof sealing ring and the inner end face of the inner ring. The inner hole diameter of the dustproof sealing ring is larger than the drive shaft mounting hole and smaller than the outer diameter of the inner ring.

[0013] Preferably, a plurality of reinforcing ribs are arranged at equal angles on the circumference of the inner end surface of the inner flange.

[0014] (III) Beneficial effects

[0015] The utility model provides an automobile wheel hub bearing, which has the following beneficial effects:

[0016] 1. The automobile wheel hub bearing has a plurality of fan blades arranged on the inner end face of the inner flange, and heat dissipation holes are opened at equal angles on the circumference of the outer ring. The inner flange rotates together with the wheel hub, driving the fan blades to rotate and supply air to the heat dissipation holes, so as to cool the bearing by air, prevent the temperature from being too high due to long-term rotation, and improve the service life of the bearing.

[0017] 2. The automobile hub bearing has an oil storage tank 1 between the inner ring grooves and an oil storage tank 2 between the outer ring grooves. The inner ring rotates with the wheel hub. Under the action of centrifugal force, the lubricating oil in the oil storage tank 1 is thrown outward, which is beneficial to ball lubrication. When the bearing is stationary, the lubricating oil is collected in the oil storage tank 2 for repeated use.

[0018] 3. The automobile wheel hub bearing has an elastic sealing ring 1 sleeved on the outer diameter of the inner ring, and an elastic sealing ring 2 is arranged on the inner end surface of the inner ring. The arrangement of the elastic sealing rings 1 and 2 prevents the leakage of lubricating oil and improves the utilization rate of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of an automobile hub bearing of the utility model Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of an automobile hub bearing of the utility model Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of an automobile wheel hub bearing of the utility model;

[0022] Figure 4 The utility model is a schematic diagram of the explosion structure of an automobile wheel hub bearing.

[0023] In the figure: 1. Inner ring; 2. Outer ring; 3. Inner flange; 4. Outer flange; 5. Threaded hole; 6. Inwardly rolled groove; 7. Outer ring groove; 8. Ball; 9. Fan blade; 10. Heat dissipation hole; 11. Oil storage tank 1; 12. Oil storage tank 2; 13. Elastic sealing ring 1; 14. Elastic sealing ring 2; 15. Spline groove; 16. Chamfer surface; 17. Connecting groove; 18. Connecting hole; 19. Dustproof sealing ring; 20. Reinforcement rib. DETAILED DESCRIPTION

[0024] The utility model embodiment provides a vehicle wheel hub bearing, such as Figure 1-4 As shown, it includes an inner ring 1 and an outer ring 2, and the inner ring 1 is sleeved in the outer ring 2: an inner flange 3 is arranged at the outer end of the inner ring 1, and threaded holes 5 are provided at equal angles on the circumference of the inner flange 3 for connecting to the wheel hub, an outer flange 4 is arranged at the inner end of the outer ring 2, and threaded holes 5 are provided at equal angles on the circumference of the outer flange 4 for connecting to the steering knuckle, a plurality of inner ring 1 grooves and outer ring grooves 7 are respectively provided on the outer side of the inner ring 1 and the inner side of the outer ring 2, a retaining frame is arranged in the inner ring 1 groove and the corresponding outer ring groove 7, and balls 8 are accommodated in the retaining frame, a plurality of fan blades 9 are provided at equal angles on the inner end face of the inner flange 3, and heat dissipation holes 10 are provided at equal angles on the upper circumference of the outer ring 2.

[0025] In the above technical solution, a number of fan blades 9 are arranged on the inner end face of the inner flange 3, and heat dissipation holes 10 are opened at equal angles on the circumference of the outer ring 2. The inner flange 3 rotates together with the wheel hub, driving the fan blades 9 to rotate and supply air to the heat dissipation holes 10, so as to cool the bearing by air to prevent the temperature from being too high due to long-term rotation and to increase the service life of the bearing.

[0026] like Figure 3 As shown, an oil storage tank 11 is opened between the grooves of the inner ring 1, and an oil storage tank 2 12 is opened between the grooves of the outer ring 7. The inner ring 1 rotates with the wheel hub. Under the action of centrifugal force, the lubricating oil in the oil storage tank 1 1 is thrown outward, which is beneficial to the lubrication of the ball 8. When it is stationary, the lubricating oil is collected in the oil storage tank 2 12 for repeated use.

[0027] like Figure 3As shown, an elastic sealing ring 13 is sleeved on the outer diameter of the inner ring 1, and an elastic sealing ring 2 14 is arranged on the inner end surface of the inner ring 1 to prevent the leakage of lubricating oil and improve the utilization rate of lubricating oil. The elastic sealing ring 13 and the elastic sealing ring 2 14 have gaps with the inner hole of the outer ring 2 to prevent interference with the outer ring 2.

[0028] like Figure 2 As shown, a drive shaft mounting hole is provided at the center of the inner ring 1 for connecting the drive shaft (not shown in the figure), a spline groove 15 is provided on the circumference of the drive shaft mounting hole, and a chamfer surface 16 is provided on the outer end face of the drive shaft mounting hole to facilitate the installation of the drive shaft.

[0029] like Figure 4 As shown, a connecting groove 17 is provided at the center of the outer end face of the outer flange 4, and connecting holes 18 are provided at equal angles on the circumference of the end face of the connecting groove 17. A dustproof sealing ring 19 is connected to the connecting hole 18, and a gap is left between the dustproof sealing ring 19 and the inner end face of the inner ring 1. The inner hole diameter of the dustproof sealing ring 19 is larger than the drive shaft mounting hole and smaller than the outer diameter of the inner ring 1, which is beneficial to dust prevention and reduces dust from entering the inner and outer rings 2.

[0030] A plurality of reinforcing ribs 20 are arranged at equal angles on the inner end surface of the inner flange 3 to enhance the strength of the inner flange 3 .

[0031] Working principle: Figure 3-4 As shown, the inner ring 1 of the bearing is connected to the drive shaft, and a threaded shaft is provided at the outer end of the drive shaft. A nut is engaged on the threaded shaft to fix the drive shaft to the inner ring 1 (not shown in the figure), the inner flange 3 is connected to the wheel hub through the threaded hole 5, and the outer flange 4 is connected to the steering knuckle (not shown in the figure). When the bearing is in use, the inner flange 3 rotates with the wheel hub, driving the fan blades 9 to rotate and supply air to the heat dissipation holes 10, so as to cool the bearing to prevent the temperature from being too high due to long-term rotation and improve the service life of the bearing.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile wheel hub bearing, comprising an inner ring (1) and an outer ring (2), wherein the inner ring (1) is sleeved inside the outer ring (2), and characterized in that: An inner flange (3) is arranged at the outer end of the inner ring (1), and threaded holes (5) are provided at equal angles on the circumference of the inner flange (3) for connecting to the wheel hub. An outer flange (4) is arranged at the inner end of the outer ring (2), and threaded holes (5) are provided at equal angles on the circumference of the outer flange (4) for connecting to the steering knuckle. A plurality of inner ring grooves (6) and outer ring grooves (7) are respectively provided on the outer side of the inner ring (1) and inside the outer ring (2). A retaining frame is arranged in the inner ring groove (6) and the corresponding outer ring groove (7), and a ball (8) is arranged in the retaining frame. A plurality of fan blades (9) are provided at equal angles on the inner end surface of the inner flange (3), and heat dissipation holes (10) are provided at equal angles on the upper circumference of the outer ring (2).

2. The automobile wheel hub bearing according to claim 1, characterized in that: An oil storage tank (11) is provided between a plurality of the inner ring grooves (6), and an oil storage tank (12) is provided between a plurality of the outer ring grooves (7).

3. The automobile wheel hub bearing according to claim 1, characterized in that: An elastic sealing ring 1 (13) is sleeved on the outer diameter of the inner ring (1), and an elastic sealing ring 2 (14) is arranged on the inner end surface of the inner ring (1). A gap is left between the elastic sealing ring 1 (13) and the elastic sealing ring 2 (14) and the inner hole of the outer ring (2).

4. The automobile wheel hub bearing according to claim 1, characterized in that: A drive shaft mounting hole is provided at the center of the inner ring (1) for connecting the drive shaft, a spline groove (15) is provided on the circumference of the drive shaft mounting hole, and a chamfer surface (16) is provided on the outer end surface of the drive shaft mounting hole.

5. The automobile wheel hub bearing according to claim 4, characterized in that: A connection groove (17) is provided at the center of the outer end surface of the outer flange (4), and connection holes (18) are provided at equal angles on the circumference of the end surface of the connection groove (17). A dustproof sealing ring (19) is connected to the connection hole (18), and a gap is left between the dustproof sealing ring (19) and the inner end surface of the inner ring (1). The inner hole diameter of the dustproof sealing ring (19) is larger than the drive shaft mounting hole and smaller than the outer diameter of the inner ring.

6. The automobile wheel hub bearing according to claim 1, characterized in that: The inner end surface of the inner flange (3) is provided with a plurality of reinforcing ribs (20) at equal angles.

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