Wheel hub bearing with circular seal structure

Abstract

The invention discloses a wheel hub bearing with a circular seal structure, comprising an outer ring and an inner ring flange, the inner ring flange comprising a working part and a flange part, a raceway formed between the working part and the outer ring, a roller arranged in the raceway, a connecting groove arranged on the flange part, an outer retaining frame arranged between the working part and the flange part, the outer retaining frame comprising a connecting part, a positioning part and a shielding part, the connecting part being connected to the inner ring flange, a connecting flange formed on the positioning part, the connecting flange being clamped with the connecting groove, an inner retaining frame connected to the outer ring, a first gap formed between the inner retaining frame and the shielding part, a sealing pocket formed between the positioning part and the inner retaining frame, a first inner retaining edge extending from the inner retaining frame, a second gap formed between the first inner retaining edge and the positioning part, and an angle formed between the second gap and the first gap. The invention has good sealing effect, effectively reduces rolling resistance and has good use effect.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, in particular to a hub bearing with a circular sealing structure. Background Art

[0002] The main function of the wheel hub bearing is to bear the load and provide precise guidance for the rotation of the wheel hub. It bears both axial load and radial load, and is a very important component. When the existing wheel hub bearing is in use, there are structural positions that are prone to rolling resistance, namely the sealing structure of the outer sealing area of ​​the bearing and the bearing raceway position, which are also the main resistance reduction directions of the existing wheel hub bearing. However, the current wheel hub bearing is still prone to produce large rolling resistance, which affects the fuel consumption of the car and reduces the use effect of the wheel hub bearing. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a hub bearing with a circular sealing structure, which has a good sealing effect, effectively reduces rolling resistance and has a good use effect.

[0004] To achieve the above-mentioned purpose, the present invention provides a wheel hub bearing with a circular sealing structure, comprising an outer ring and an inner ring flange, the inner ring flange comprising a working part and a flange part, a raceway is formed between the working part and the outer ring, a roller is arranged in the raceway, a connecting groove is arranged on the flange part, an outer retaining frame is arranged between the working part and the flange part, the outer retaining frame comprises a connecting part, a positioning part and a shielding part, the connecting part is connected to the shielding part through the positioning part, the connecting part is connected to the inner ring flange, a connecting flange is formed on the positioning part, the connecting flange is clamped with the connecting groove, an inner retaining frame is connected to the outer ring, a first gap is formed between the inner retaining frame and the shielding part, a sealing pocket is formed between the positioning part and the inner retaining frame, a first inner retaining edge is extended from the inner retaining frame to the connecting position of the positioning part and the flange part, a second gap is formed between the first inner retaining edge and the positioning part, and an angle is formed between the second gap and the first gap.

[0005] The beneficial effect of such arrangement is as follows: by such arrangement, a second gap is formed between the first inner retaining edge and the positioning portion, and a first gap is formed between the inner retaining frame and the shielding portion, and an angle is formed between the two. Preferably, the angle is set to 70-110°, so that it is difficult for external dirt and impurities to enter, and due to the existence of the angle, when oil leaks out from the inside, it is difficult for the oil to leak out due to the effect of liquid tension at the bending position, thereby improving the anti-seepage effect of the overall structure. At the same time, a connecting flange is provided on the positioning portion of the outer retaining frame, and the connecting flange is connected to the flange portion, so that the overall structural connection is more stable and not easy to loosen, and the position of the positioning portion is guaranteed to be stable. At the same time, there is almost no contact between the overall sealing structures, which effectively reduces resistance and has a good use effect. At the same time, the structure is simple and easy to implement.

[0006] As a further configuration of the present invention, the outer wall of the positioning portion of the outer retaining frame is arranged in contact with the outer wall of the inner ring flange, the inner wall of the positioning portion extends toward the inner retaining frame with an outer retaining edge, the outer retaining edge is arranged inclined, and the edge of the outer retaining edge is arranged close to the first inner retaining edge.

[0007] The beneficial effect of such an arrangement is as follows: through such an arrangement, during the operation of the bearing, due to the effect of centrifugal force, the outer rib approaches the first inner rib, further reducing the gap between the two. The length of the outer rib here is slightly smaller than the spacing between the inner rib frame and the outer rib frame, so that the outer rib does not directly contact the inner rib frame, reducing rolling resistance and further improving the use effect of the overall structure. At the same time, due to the reduction in the gap between the two, it is more difficult for oil to seep out, thereby improving the anti-seepage and anti-leakage effect of the overall structure.

[0008] As a further configuration of the present invention, a second inner retaining edge is arranged on the inner retaining frame at a position corresponding to the positioning portion, the second inner retaining edge is arranged obliquely, and the edge of the second inner retaining edge is arranged close to the outer retaining edge.

[0009] The beneficial effect of such arrangement is as follows: through such arrangement, during the operation of the bearing, due to the effect of centrifugal force, the second inner rib approaches the outer rib, further reducing the gap between the two. The length of the second inner rib here is slightly smaller than the spacing between the inner rib frame and the outer rib frame, so that the second inner rib does not directly contact the outer rib frame, reducing rolling resistance and further improving the use effect of the overall structure. At the same time, due to the reduction in the gap between the two, it is more difficult for oil to seep out, thereby improving the anti-seepage and anti-leakage effect of the overall structure.

[0010] As a further configuration of the present invention, the inner retaining frame is bent to form a plurality of steps, and the first inner retaining edge and the second inner retaining edge are respectively connected to different steps.

[0011] The beneficial effect of such arrangement is that the mutual interference between the two inner retaining edges is reduced, and at the same time, the structure is simple and has good use effect.

[0012] As a further configuration of the present invention, the outer rib is configured to be gradually thinner from the connection end of the outer rib and the positioning portion toward the edge of the outer rib.

[0013] The beneficial effect of such arrangement is that the connection strength of the outer rib is improved, while the structure is simple, the position of the outer rib is ensured to be stable and not easy to tilt inward, and the structure is simple and has good use effect.

[0014] As a further configuration of the present invention, a plurality of rubber convex ribs are provided on the inner barrier frame at positions corresponding to the shielding portions.

[0015] The beneficial effect of such arrangement is that it further increases the difficulty of internal oil seepage and makes it more difficult for dirt to enter. At the same time, the structure is simple and has good use effect.

[0016] As a further configuration of the present invention, a positioning flange is provided on the inner portion of the inner block frame, and the positioning flange abuts against the inner wall of the outer ring.

[0017] The beneficial effect of such arrangement is that the inner retaining frame and the overall structure are more tightly combined and installed, less likely to loosen, and the connection is more reliable. At the same time, the structure is simple, easy to implement, and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall cross-sectional structure of an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the outer retaining frame and the inner retaining frame in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The embodiment of the hub bearing with the round-shaped seal structure of the present invention is as follows: Figure 1 to Figure 2As shown: it includes an outer ring 2 and an inner ring flange 1, the inner ring flange 1 includes a working part and a flange part, a raceway is formed between the working part and the outer ring 2, a roller 3 is arranged in the raceway, a connecting groove is arranged on the flange part, an outer retaining frame 4 is arranged between the working part and the flange part, the outer retaining frame 4 includes a connecting part 41, a positioning part 42 and a shielding part 43, the connecting part 41 is connected to the shielding part 43 through the positioning part 42, the connecting part 41 is connected to the inner ring flange 1, the positioning part A connecting flange 44 is formed on 42, and the connecting flange 44 is clamped with the connecting groove. An inner retaining frame 5 is connected to the outer ring 2, and a first gap is formed between the inner retaining frame 5 and the shielding portion 43, and a sealing pocket is formed between the positioning portion 42 and the inner retaining frame 5. The inner retaining frame 5 extends a first inner retaining edge 51 toward the connection position between the positioning portion 42 and the flange portion, and a second gap is formed between the first inner retaining edge 51 and the positioning portion 42, and an angle is formed between the second gap and the first gap. The beneficial effect of such arrangement is as follows: such arrangement forms a second gap between the first inner retaining edge 51 and the positioning portion 42, and a first gap between the inner retaining frame 5 and the shielding portion 43, and an angle is formed between the two. Preferably, the angle is set to 100°, so that it is difficult for external dirt and impurities to enter, and due to the existence of the angle, when oil leaks out from the inside, it is difficult for the oil to leak out due to the effect of liquid tension at the bending position, thereby improving the anti-seepage effect of the overall structure. At the same time, a connecting flange 44 is provided on the positioning portion 42 of the outer retaining frame 4, and the connecting flange 44 is connected to the flange portion, so that the overall structural connection is more stable and not easy to loosen, and the position of the positioning portion 42 is ensured to be stable. At the same time, there is almost no contact between the overall sealing structures, which effectively reduces resistance and has a good use effect. At the same time, the structure is simple and easy to implement.

[0021] As a further configuration of the present invention, the outer wall of the positioning portion 42 of the outer retaining frame 4 is arranged in close contact with the outer wall of the inner ring flange 1, and the inner wall of the positioning portion 42 extends to the inner retaining frame 5 with an outer retaining edge 45, the outer retaining edge 45 is arranged obliquely, and the edge of the outer retaining edge 45 is arranged close to the first inner retaining edge 51. The beneficial effect of such configuration is that, through such configuration, during the operation of the bearing, due to the action of centrifugal force, the outer retaining edge 45 approaches the first inner retaining edge 51, further reducing the gap between the two, the length of the outer retaining edge 45 here is slightly smaller than the spacing between the inner retaining frame 5 and the outer retaining frame 4, so that the outer retaining edge 45 will not directly contact the inner retaining frame 5, reducing rolling resistance, and further improving the use effect of the overall structure, and at the same time, due to the reduction of the gap between the two, it is more difficult for oil to seep out, improving the anti-seepage and anti-leakage effect of the overall structure.

[0022] As a further configuration of the present invention, a second inner rib 52 is provided on the inner retaining frame 5 at a position corresponding to the positioning portion 42, the second inner rib 52 is inclined, and the edge of the second inner rib 52 is provided close to the outer rib 45. The beneficial effect of such configuration is that, during the operation of the bearing, due to the effect of centrifugal force, the second inner rib 52 approaches the outer rib 45, further reducing the gap between the two. The length of the second inner rib 52 is slightly smaller than the spacing between the inner retaining frame 5 and the outer retaining frame 4, so that the second inner rib 52 does not directly contact the outer retaining frame 4, reducing rolling resistance and further improving the use effect of the overall structure. At the same time, due to the reduction of the gap between the two, it is more difficult for oil to seep out, thereby improving the anti-seepage and anti-leakage effect of the overall structure.

[0023] As a further configuration of the present invention, the inner retaining frame 5 is bent to form a plurality of steps, and the first inner retaining edge 51 and the second inner retaining edge 52 are respectively connected to different steps. The beneficial effect of this configuration is that the mutual interference between the two inner retaining edges is reduced, and the structure is simple and has a good use effect.

[0024] As a further configuration of the present invention, the outer rib 45 is configured to be gradually thinner from the connection end of the outer rib 45 and the positioning portion 42 to the edge of the outer rib 45. The beneficial effect of this configuration is that the connection strength of the outer rib 45 is improved, and the structure is simple, which ensures that the position of the outer rib 45 is stable and not easy to tilt inward. At the same time, the structure is simple and has a good use effect.

[0025] As a further configuration of the present invention, a plurality of rubber ribs 53 are provided on the inner frame 5 at positions corresponding to the shielding portion 43. The beneficial effect of this configuration is that it further increases the difficulty of internal oil leakage and dirt entering, and the structure is simple and has good use effect.

[0026] As a further configuration of the present invention, a positioning flange 54 is provided inside the inner frame 5, and the positioning flange 54 abuts against the inner wall of the outer ring 2. The beneficial effect of this configuration is that the inner frame 5 is more tightly combined with the overall structure, less likely to loosen, and the connection is more reliable. At the same time, the structure is simple, easy to implement, and has a good use effect.

[0027] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A wheel hub bearing with a circular seal structure, comprising an outer ring and an inner ring flange, wherein the inner ring flange comprises a working portion and a flange portion, a raceway is formed between the working portion and the outer ring, and a roller is arranged in the raceway, characterized in that: The flange portion is provided with a connecting groove, an outer retaining frame is provided between the working portion and the flange portion, the outer retaining frame comprises a connecting portion, a positioning portion and a shielding portion, the connecting portion is connected to the shielding portion through the positioning portion, the connecting portion is connected to the inner ring flange, a connecting flange is formed on the positioning portion, the connecting flange is clamped with the connecting groove, an inner retaining frame is connected to the outer ring, a first gap is formed between the inner retaining frame and the shielding portion, a sealing pocket is formed between the positioning portion and the inner retaining frame, and the inner retaining frame extends toward the positioning portion and the flange A first inner guard edge is extended from the connection position of the part, a second gap is formed between the first inner guard edge and the positioning part, an angle is formed between the second gap and the first gap, the outer wall of the positioning part of the outer guard frame is arranged in a close contact with the outer wall of the inner ring flange, an outer guard edge is extended from the inner wall of the positioning part to the inner guard frame, the outer guard edge is inclined, the edge of the outer guard edge is arranged close to the first inner guard edge, the outer guard edge is gradually thinned from the connection end of the outer guard edge and the positioning part to the edge of the outer guard edge, and a plurality of rubber ribs are arranged on the inner guard frame corresponding to the position of the shielding part.

2. The wheel hub bearing with a circular seal structure according to claim 1, characterized in that: A second inner retaining edge is arranged on the inner retaining frame at a position corresponding to the positioning portion. The second inner retaining edge is arranged obliquely, and an edge of the second inner retaining edge is arranged close to the outer retaining edge.

3. The wheel hub bearing with a circular seal structure according to claim 2, characterized in that: The inner retaining frame is bent to form a plurality of steps, and the first inner retaining edge and the second inner retaining edge are respectively connected to different steps.

4. The wheel hub bearing with a circular seal structure according to claim 1, characterized in that: A positioning flange is arranged on the inner wall of the inner retaining frame, and the positioning flange abuts against the inner wall of the outer ring.

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