Anti-deviation hub bearing

Abstract

An anti-deviation hub bearing comprises a flange outer ring and a flange inner ring, an outer ring and an inner ring are arranged between the flange outer ring and the flange inner ring, at least one set of rolling bodies placed in a retainer is arranged between the outer ring and the inner ring, a shoulder part is arranged at the end, facing the end face of the inner ring, of the flange inner ring, and a first bent part is arranged at the other end of the flange inner ring. An inner ring mounting groove for inserting the inner ring is formed between the shoulder part and the first bending part; the two ends, facing the end face of the outer ring, of the flange outer ring are each provided with a second bent part, and an outer ring installation groove allowing the outer ring to be inserted therein is formed between the two second bent parts. The bearing has the beneficial effects that when the outer ring or the inner ring has a deviation trend, the flange outer ring and the flange inner ring can absorb the deviation trend, and the deviation trend of the outer ring or the inner ring can be further inhibited based on the rigidity of the flange outer ring and the flange inner ring, so that the stability of the bearing during operation is improved.

Description

Technical Field

[0001] The utility model relates to a wheel hub bearing, in particular to an anti-drift wheel hub bearing. Background Art

[0002] The working principle of wheel hub bearings is based on the rolling structure inside them, such as balls or rollers. When the wheel rotates, the rolling elements roll between the inner and outer tracks, effectively dispersing the load, reducing friction, and transmitting the rotational force. This design reduces the friction resistance when the vehicle is driving, prolongs the service life of the wheel hub, and improves the stability and comfort of driving. Wheel hub bearings play an important role in automotive engineering, ensuring the stability, reliability and safety of the vehicle.

[0003] Chinese patent document CN203418922U discloses a wheel hub bearing assembly with clearance monitoring, including a flange for connecting to a vehicle frame, the flange is arranged on the wheel hub, a bearing having an inner ring, an outer ring and rolling elements is arranged on the wheel hub, a locking ring is arranged on the side of the wheel hub away from the flange, and the inner ring is used to lock the inner ring and the wheel hub along its axial direction by bolts, an elastic buffer sheet is arranged between the locking ring and the inner ring, a force sensor is arranged between the elastic buffer sheet and the locking ring, and the force sensor transmits data to a processor via a wire, and the processor displays the processed result through a monitor.

[0004] The above scheme ensures a reliable connection between the inner ring of the bearing and the wheel hub. However, the above scheme has the following shortcomings: since the locking ring is an external component of the inner ring and is connected to it by bolts, the locking ring and the inner ring of the above bearing are prone to loosening after long-term operation, which will cause the inner ring to shift, thereby increasing friction and generating additional heat and loss during the operation of the bearing, and even damaging the bearing. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an anti-drifting hub bearing which can prevent the bearing from drifting and thus improve the running stability of the bearing.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an anti-drift hub bearing, comprising a flange outer ring and a flange inner ring, with an outer ring and an inner ring arranged therebetween, at least one group of rolling elements placed in a retaining frame between the outer ring and the inner ring, a shoulder being arranged at one end of the end face of the flange inner ring facing the inner ring, and a first bent portion being arranged at the other end, an inner ring mounting groove for inserting the inner ring being formed between the shoulder and the first bent portion, and a limit to the inner ring being formed by the shoulder and the first bent portion; second bent portions are arranged at both ends of the end face of the flange outer ring facing the outer ring, an outer ring mounting groove for inserting the outer ring being formed between the two second bent portions, and a limit to the outer ring being formed by the two second bent portions.

[0007] The beneficial effect of the utility model is that the two ends of the outer ring of the bearing respectively abut against the second bending part to form the limit of the outer ring of the flange to the outer ring, and similarly the two ends of the inner ring respectively abut against the shoulder and the first bending part to form the limit of the inner ring of the flange to the inner ring. Therefore, when the outer ring or the inner ring has a tendency to deviate, the outer ring of the flange and the inner ring of the flange can absorb the tendency of the deviation by themselves, and because the outer ring of the flange and the inner ring of the flange can be made of 55, 65Mn or other medium-carbon structural steel materials with equal performance, and the whole is normalized or quenched and tempered, based on its own rigidity, the tendency of the outer ring or the inner ring to deviate can be further suppressed, thereby improving the stability of the above-mentioned bearing during operation.

[0008] Furthermore, the inner ring and the outer ring are inserted into the inner ring installation groove and the outer ring installation groove by riveting.

[0009] The inner ring and the outer ring are installed into the inner ring installation groove and the outer ring installation groove by riveting, that is, the inner ring and the outer ring are respectively tightly matched with the flange inner ring and the flange outer ring, thereby further suppressing the possibility of the inner ring and the outer ring being offset.

[0010] Furthermore, the cross-sectional height of the shoulder is consistent with the cross-sectional height of the inner ring, and the cross-sectional height of the first bending portion is smaller than the cross-sectional height of the shoulder; and the cross-sectional height of the second bending portion is consistent with the cross-sectional height of the outer ring.

[0011] When installing the above bearing, first install the rolling element and the outer ring placed in the cage on the outer ring of the flange, and install the inner ring on the inner ring of the flange, and then complete the installation between the above two combinations. In the above installation process, since the cross-sectional height of the first bent portion located at the edge of the inner ring of the flange is slightly smaller than the cross-sectional height of the shoulder, it is more convenient to install the inner ring; and the cross-sectional height of the shoulder is consistent with the cross-sectional height of the inner ring, which can provide better support for the inner ring, so as to further improve the stability of the bearing operation. The cross-sectional height of the second bent portion is consistent with the cross-sectional height of the outer ring, which can provide better support for the outer ring to prevent the outer ring from deflecting.

[0012] Furthermore, the outer ring is provided with a first groove toward the rolling body, and the inner ring is provided with an arc-shaped second groove toward the rolling body; the first groove includes an arc-shaped surface that cooperates with the second groove to limit the rolling body, and the end of the arc-shaped surface toward the center of the outer ring is connected to a horizontally arranged straight line surface.

[0013] The arcuate surfaces of the second channel and the first channel can be arranged correspondingly to wrap both sides of the rolling body, so as to better limit the deviation of the rolling body, and the straight surface at the edge of the arcuate surface rests on the rolling body to further limit the deviation of the rolling body to ensure that the rolling body will not deviate during operation.

[0014] Furthermore, the flange outer ring and the flange inner ring are respectively provided with a first fixing hole and a second fixing hole whose cross-sectional positions are staggered, and the first fixing hole and the second fixing hole are respectively provided with a first fixing member and a second fixing member, and the first fixing member and the second fixing member are respectively provided with a limiting groove and a retractable limiting member, and the limiting groove and the limiting member cooperate to form a limit between the first fixing member and the second fixing member.

[0015] The limiting grooves and limiting members on the first fixing member and the second fixing member cooperate to form a limit between the first fixing member and the second fixing member, and then form a linkage limit between the flange outer ring and the flange inner ring, thereby further ensuring the stability of the above-mentioned bearing during operation.

[0016] Furthermore, a guide surface is arranged in an inclined manner at the end of the first fixing member.

[0017] During the process of the first fixing member and the second fixing member forming a limit, the inclined guide surface can squeeze the limit member, thereby facilitating the compression of the limit member, so as to form a limit between the first fixing member and the second fixing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A cross-sectional view of an embodiment of the utility model;

[0019] Figure 2 It is a partial enlarged view of the outer ring and inner ring of the embodiment of the utility model;

[0020] Figure 3 It is a partial enlarged view of the first fixing member and the second fixing member of the embodiment of the utility model;

[0021] Figure 4 This is a partial enlarged view of the sealing part of the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The utility model embodiment of an anti-drift wheel hub bearing is as follows Figure 1-4 As shown: it includes a flange outer ring 1, a flange inner ring 2, an outer ring 3 and an inner ring 4 installed in the flange outer ring 1 and the flange inner ring 2 by riveting, and two groups of rolling bodies 5 placed in a retainer 6 are arranged between the outer ring 3 and the inner ring 4. It should be noted that: the flange outer ring 1 and the flange inner ring 2 are made of 55, 65Mn or medium-carbon structural steel with equal performance, and are subjected to overall normalizing or quenching and tempering heat treatment; while the outer ring 3 and the inner ring 4 are made of high-carbon chromium bearing steel GCr15 or steel with equal performance, and are subjected to overall quenching and tempering heat treatment; and the rolling body 5 is made of high-carbon chromium bearing steel GCr15 or steel with equal performance, and is subjected to overall quenching and tempering heat treatment. Through the above process, the present embodiment can also obtain a rigidity performance superior to that of the prior art.

[0023] The inner ring 2 of the flange is provided with an inner ring installation groove 23 for the inner ring 4 to be installed, and the two ends of the inner ring installation groove 23 are respectively a shoulder 21 and a first bent portion 22 located at the edge of the inner ring 2 of the flange. The cross-sectional height of the shoulder 21 is consistent with the cross-sectional height of the inner ring 4 and slightly higher than the cross-sectional height of the first bent portion 22. The shoulder 21 and the first bent portion 22 abut against both sides of the inner ring 4 to form a limit for the inner ring 4. The outer ring 1 of the flange is provided with an outer ring installation groove 12 for the outer ring 3 to be installed, and the two ends of the outer ring installation groove 12 are provided with a second bent portion 11 whose cross-sectional height is consistent with that of the outer ring 3. The two second bent portions 11 abut against both sides of the outer ring 3 to form a limit for the outer ring 3. The outer ring 3 and the inner ring 4 are respectively provided with a first channel 31 and an arc-shaped second channel 41. The first channel 31 includes an arc surface 311 and a straight surface 312 connected to the end of the arc surface 311 near the center of the outer ring 3. The arc surface 311 and the second groove 41 abut against two sides of the rolling body 5 respectively, and the two abutting positions are correspondingly arranged.

[0024] The flange outer ring 1 and the flange inner ring 2 are respectively provided with a first fixing hole 13 and a second fixing hole 24, and the first fixing hole 13 and the second fixing hole 24 are respectively provided with a first fixing member 14 and a second fixing member 25, and the first fixing member 14 and the second fixing member 25 are respectively provided with a limiting groove 141 and an elastic limiting member 251, and the first fixing hole 13 and the second fixing hole 24 are staggered so that the limiting member 251 and the limiting groove 141 cooperate to limit, and at the same time, the end of the first fixing member 14 facing the second fixing member 25 is provided with a guide surface 142 which is inclined so as to compress the limiting member so that it can better reach the limiting groove 141.

[0025] Seals 7 are provided on both sides of the area for the rolling element 5 to run formed between the outer ring 3 and the inner ring 4. The seals 7 include a first frame 71 and a second frame 72 both of which are arranged in an L shape. The first frame 71 is arranged close to the rolling element 5, and the second frame is arranged away from the rolling element 5. A sealing lip 73 for sealing the running area of ​​the rolling element 5 is provided between the two. The ends of the two straight segments of the first frame 71 are wrapped by the sealing lip 73, and the other side of the sealing lip 73 abuts against the second frame 72 and forms multiple contact seals between the second frame 72. The above-mentioned first frame 71 and the second frame 72 both in an L shape are more convenient for the installation of the seal 7, and the one side of the sealing lip 73 is arranged to wrap the first frame 71, which can effectively prevent the sealing lip 73 from deviating and causing the sealing failure, and the multiple contact seals formed between the other side of the sealing lip 73 and the second frame 72 can further prevent the sealing lip 73 from losing the sealing effect.

[0026] The installation process of this embodiment is briefly described below: First, the outer ring 3 and the inner ring 4 are respectively placed in the outer ring installation groove 12 and the inner ring installation groove 23 by riveting. At this time, the number of inner rings 4 can be set to two symmetrically for easy installation. Secondly, the rolling body 5 is installed in the retaining frame 6 and the rolling body 5 placed in the retaining frame 6 is clamped in the first groove 31 of the outer ring 3. At this time, the straight surface 312 of the first groove 31 can play the role of installation limit to ensure that the rolling body 5 is installed in place. Once again, the rolling body 5 placed in the retaining frame 6, the outer ring 3 and the flange outer ring 3 installation unit and the inner ring 4 and the flange inner ring 2 installation unit are assembled. After the assembly is completed, the seal 7 is installed on both sides of the rolling body 5 to form a seal for the rolling body 5. Finally, the first fixing member 14 and the second fixing member 25 are installed in the first fixing hole 13 and the second fixing hole 24 respectively, and in this process, the limiting member 251 is compressed by the guide surface 142 to be flush with the surface of the first fixing member 14, and after the limiting member 251 moves to the position corresponding to the limiting groove 141, the limiting member 251 rebounds to form a lock between the first fixing member 14 and the second fixing member 25.

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

Claims

1. An anti-drift wheel hub bearing, comprising a flange outer ring and a flange inner ring, an outer ring and an inner ring are arranged between the two, and at least one set of rolling elements placed in a cage is present between the outer ring and the inner ring, characterized in that: A shoulder is provided at one end of the end surface of the inner ring of the flange facing the inner ring, and a first bending portion is provided at the other end, an inner ring mounting groove for inserting the inner ring is formed between the shoulder and the first bending portion, and the inner ring is limited by the shoulder and the first bending portion; second bending portions are provided at both ends of the end surface of the outer ring of the flange facing the outer ring, an outer ring mounting groove for inserting the outer ring is formed between the two second bending portions, and the outer ring is limited by the two second bending portions.

2. The anti-drift hub bearing according to claim 1, characterized in that: The inner ring and the outer ring are inserted into the inner ring installation groove and the outer ring installation groove by riveting.

3. The anti-drifting hub bearing according to claim 2, characterized in that: The cross-sectional height of the shoulder is consistent with the cross-sectional height of the inner ring, and the cross-sectional height of the first bending portion is smaller than the cross-sectional height of the shoulder; the cross-sectional height of the second bending portion is consistent with the cross-sectional height of the outer ring.

4. The anti-drifting hub bearing according to claim 1, characterized in that: The outer ring is provided with a first groove toward the rolling body, and the inner ring is provided with an arc-shaped second groove toward the rolling body; the first groove includes an arc-shaped surface that cooperates with the second groove to limit the rolling body, and the end of the arc-shaped surface toward the center of the outer ring is connected to a horizontally arranged straight line surface.

5. The anti-drifting hub bearing according to claim 1, characterized in that: The outer ring of the flange and the inner ring of the flange are respectively provided with a first fixing hole and a second fixing hole whose cross-sectional positions are staggered, the first fixing hole and the second fixing hole are respectively provided with a first fixing member and a second fixing member, the first fixing member and the second fixing member are respectively provided with a limiting groove and a retractable limiting member, the limiting groove and the limiting member cooperate to form a limit between the first fixing member and the second fixing member.

6. The anti-drifting hub bearing according to claim 5, characterized in that: The end of the first fixing member is provided with an inclined guiding surface.

Images