CN220816260U - Hub unit with multiple convexity rollaway nest - Google Patents
Hub unit with multiple convexity rollaway nest Download PDFInfo
- Publication number
- CN220816260U CN220816260U CN202322569647.3U CN202322569647U CN220816260U CN 220816260 U CN220816260 U CN 220816260U CN 202322569647 U CN202322569647 U CN 202322569647U CN 220816260 U CN220816260 U CN 220816260U
- Authority
- CN
- China
- Prior art keywords
- convexity
- raceway
- hub unit
- ring
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 35
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000010802 sludge Substances 0.000 claims description 2
- 230000001815 facial effect Effects 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model provides a hub unit with multiple convexity raceways, which solves the problem that the service life of the hub unit is influenced by long-term bearing loss of rolling bodies. The utility model comprises a mandrel, one end of the mandrel is fixedly sleeved with an inner ring, the mandrel is sleeved with an outer ring on the periphery of the inner ring, a raceway annular gap is formed between the outer ring and the mandrel as well as between the outer ring and the inner ring, a retainer is arranged in the raceway annular gap, a plurality of rollers are arranged on the retainer, and the mandrel, the inner ring, the outer ring and the rollers form a convexity contact surface. The utility model does not change the whole structure, only changes the stress condition of the rolling surface of each rolling body in the interior, and changes the size and the contact position of the contact surface through the convexity design of each contact surface. The contact surface area can be increased in heavy load and reduced in light load, and the design of convexity enables the theoretical contact point of each rolling surface to be kept in one direction, so that the service life of the hub unit is prolonged.
Description
Technical Field
The utility model belongs to the technical field of machinery, and relates to a rotating bearing, in particular to a hub unit with a multi-convexity raceway.
Background
The function of the automobile hub unit is to bear load and provide accurate guidance for the rotation of the hub, and the automobile hub unit is one of the very critical parts in an automobile, and is used for bearing axial load and radial load. The service life of the bearing is direct data for measuring the quality of products, and the improvement of the service life of the bearing is a main technical difficulty at present.
The design of the hub unit bearing also has important influence on the service life of the bearing, for example, the diameter of the rolling body is properly increased, the fatigue life of the rolling bearing is greatly dependent on the maximum rolling body load, the increased diameter of the rolling body can enhance the bearing capacity of the rolling body to improve the service life of the bearing, and the reasonable arrangement of the contact parameters of the rolling body and the rollaway nest has obvious effect on the service life of the hub unit bearing.
In the prior art, a plane structure is generally adopted to contact with the cylindrical surface of the rolling body, so that when the hub unit bears heavy load or light load, the contact area and the position are not changed, the rolling body is lost by long-term bearing, and the service life of the hub unit is further influenced.
Disclosure of utility model
The utility model aims at solving the problems in the prior art, and provides a hub unit with a multi-convexity raceway, which is capable of improving the service life by changing the size and the contact position of a contact surface through the convexity design of each contact surface.
The aim of the utility model can be achieved by the following technical scheme: the hub unit comprises a mandrel, one end of the mandrel is fixedly sleeved with an inner ring, the mandrel is sleeved with the outer periphery of the inner ring, a raceway annular gap is formed between the outer ring and the mandrel and between the outer ring and the inner ring, a retainer is arranged in the raceway annular gap, a plurality of rollers are arranged on the retainer, and the mandrel, the inner ring, the outer ring and the rollers form a convexity contact surface.
In the hub unit with the multi-convexity raceway, a rolling groove I is concavely arranged on the periphery of the mandrel, and a convex cambered surface I is convexly arranged at the bottom of the rolling groove I; a rolling groove II is concavely formed in the periphery of the inner ring, and a convex cambered surface II is outwards convexly formed at the bottom of the rolling groove II; the inner periphery of the outer ring is provided with an annular inclined plane I and an annular inclined plane II, and a convex cambered surface III is arranged on the annular inclined plane I and the annular inclined plane II in an inward protruding mode.
In the hub unit of the multi-convexity raceway, the outer circumferential wall surface of the roller is a convex arc surface IV, and the convex arc surface IV, the convex arc surface I/the convex arc surface II/the convex arc surface III form the convexity contact surface.
In the hub unit of the multi-convexity raceway, the convex cambered surface I/the convex cambered surface II/the convex cambered surface III/the convex cambered surface IV are formed by splicing parabolas, logarithmic curves and multiple sections of circular arcs.
In the hub unit with the multi-convexity raceway, a gear ring is fixedly sleeved on the periphery of the mandrel, the gear ring is positioned in the raceway annular gap, a sensor is inserted into the outer ring, and the inner end of the sensor is aligned with the gear ring.
In the hub unit with the multi-convexity raceway, the retainer comprises two rings of frame bodies, each ring of frame bodies is provided with a plurality of rollers in a ring array, and the gear ring is positioned between the two rings of frame bodies.
In the hub unit of the multi-convexity raceway, a non-basal plane sealing piece is blocked at one port of the raceway annular gap, a sealing component is blocked at the other port of the raceway annular gap, the sealing component comprises a basal plane sealing piece positioned at the inner side, and a counter pressure cover is attached to the outer side of the basal plane sealing piece.
In the hub unit with the multi-convexity raceway, the periphery of the mandrel is integrally provided with the flange in a protruding mode, a plurality of mounting holes are formed in the flange, and bolts are inserted into the mounting holes.
In the hub unit with the multi-convexity raceway, a mud guiding water groove is formed between the non-basal surface sealing piece and the flange.
In the hub unit with the multi-convexity raceway, the central shaft is provided with a central hole, and an internal spline is arranged in the middle of the central hole.
Compared with the prior art, the hub unit with the multi-convexity raceway has the beneficial effects that:
The utility model does not change the whole structure, only changes the stress condition of the rolling surface of each rolling body in the interior, and changes the size and the contact position of the contact surface through the convexity design of each contact surface. The contact surface area can be increased in heavy load and reduced in light load, and the design of convexity enables the theoretical contact point of each rolling surface to be kept in one direction, so that the service life of the hub unit is prolonged.
Drawings
Fig. 1 is a cross-sectional structural view of the hub unit of the present multi-convexity raceway.
In the figure, 1, a mandrel; 2. a non-base seal; 3. a gear ring; 4. a sensor; 5. an outer ring; 6. a retainer; 7. a roller; 8. a base seal; 9. a counter-pressure cover; 10. an inner ring; 11. and (5) a bolt.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1, the hub unit with the multi-convexity raceway comprises a mandrel 1, one end of the mandrel 1 is fixedly sleeved with an inner ring 10, the mandrel 1 is sleeved with an outer ring 5 on the periphery of the inner ring 10, a raceway annular gap is formed between the outer ring 5 and the mandrel 1 and between the outer ring 10, a retainer 6 is arranged in the raceway annular gap, a plurality of rollers 7 are arranged on the retainer 6, and the mandrel 1, the inner ring 10 and the outer ring 5 form convexity contact surfaces with the rollers 7.
The inner ring 10 is pressed on the end of the mandrel 1, and is fixed and the size of the product clearance is adjusted through the curled edge of the mandrel 1. The retainer 6 assists the two rows of rolling characters to be uniformly distributed on the roller path, and the retainer 6 has a certain gap. The inside of the hub unit forms a double-row angular contact bearing structure, so that the hub unit can bear axial load and radial load.
The periphery of the mandrel 1 is concavely provided with a rolling groove I, and the bottom of the rolling groove I is convexly provided with a convex cambered surface I outwards; a rolling groove II is concavely formed on the periphery of the inner ring 10, and a convex cambered surface II is outwards convexly formed at the bottom of the rolling groove II; the inner periphery of the outer ring 5 is provided with an annular inclined plane I and an annular inclined plane II, and a convex cambered surface III is arranged on the annular inclined plane I and the annular inclined plane II in an inward convex manner. The first rolling groove of the mandrel 1, the second rolling groove of the inner ring 10, the first annular inclined surface of the outer ring 5 and the second annular inclined surface are matched to form two rows of raceways for supporting the rotation of the rollers 7. The roller path adopts a local surface quenching mode, so that the hardness of the roller path is improved, and the wear resistance of the roller path is improved.
The peripheral wall surface of the roller 7 is a convex arc surface IV, and the convex arc surface IV and the convex arc surface I/the convex arc surface II/the convex arc surface III form a convex contact surface. The outside cell wall of the second rolling groove forms a flange to resist and limit the roller 7, and the contact surface between the roller 7 and the flange is changed through the convexity design of the same shape of the second rolling groove and the roller 7, so that the service life of the product is prolonged. According to the size of the roller 7, the convexity positions of the outer ring 5 and the inner ring 10 are changed, the stress center is adjusted, and the service life of the product is prolonged.
The first convex cambered surface/the second convex cambered surface/the third convex cambered surface/the fourth convex cambered surface are formed by splicing parabolas, logarithmic curves and multiple sections of circular arcs.
The periphery of the mandrel 1 is fixedly sleeved with a gear ring 3, the gear ring 3 is positioned in a raceway annular gap, the outer ring 5 is inserted with a sensor 4, and the inner end of the sensor 4 is aligned with the gear ring 3. The interference fit of the ring gear 3 ensures that it is fixed to the spindle 1, the ring gear 3 providing a signal to the sensor 4. The sensor 4 transmits wheel information to the vehicle by recognizing the signal of the ring gear 3 press-fitted on the spindle 1.
The retainer 6 comprises two rings of frame bodies, each ring of frame bodies is provided with a plurality of rollers 7 in a ring-shaped array, and the gear ring 3 is positioned between the two rings of frame bodies. The non-basal plane sealing element 2 is blocked at one port of the raceway annular gap, the sealing component is blocked at the other port of the raceway annular gap, the sealing component comprises a basal plane sealing element 8 positioned at the inner side, and a back pressure cover 9 is stuck and pressed at the outer side of the basal plane sealing element 8.
The counter cap 9 is matched with the basal plane sealing piece 8, is respectively pressed on the inner ring 10 and the outer ring 5, forms a sealing space with the other non-basal plane sealing piece 2 on the outer ring 5 to prevent grease from leaking and foreign matters from entering the hub unit. The non-basal plane sealing element 2 has a special structure, is arranged on the outer circle of the outer ring 5, reduces the height of the outer ring 5 by changing the structural design and the installation position of the sealing element, and lightens the weight of products.
The periphery of the mandrel 1 is integrally provided with a flange in a protruding mode, a plurality of mounting holes are formed in the flange, and bolts 11 are inserted into the mounting holes. The bolts 11 are used to connect the hub unit to the brake disc and the hub.
A sludge guide trough is formed between the non-basal surface sealing piece 2 and the flange. And the muddy water flows out through the muddy water guide groove before flowing into the lip of the non-basal surface sealing piece 2 contacted with the mandrel 1, so that the erosion of the muddy water to the sealing piece is reduced.
The mandrel 1 is provided with a middle hole, and an internal spline is arranged in the middle of the middle hole. The internal spline is matched with the external spline during assembly and is used for fixing the hub unit on the automobile chassis and ensuring the torsion of the hub unit.
The principle of action of the hub unit of the multi-convexity raceway is as follows: the outer ring 5 rollaway nest, the mandrel 1 rollaway nest, the inner ring 10 rollaway nest and the inner ring 10 flange all adopt convexity designs, the convexity sizes are different, and the convexity sizes and convexity positions are designed according to the stress sizes and the stress positions. The contact part adopts a heat treatment process to improve the hardness, the overall mechanical property and the roughness of the contact surface, and the matching deformation is reduced.
Compared with the prior art, the hub unit with the multi-convexity raceway has the beneficial effects that:
The utility model does not change the whole structure, only changes the stress condition of the rolling surface of each rolling body in the interior, and changes the size and the contact position of the contact surface through the convexity design of each contact surface. The contact surface area can be increased in heavy load and reduced in light load, and the design of convexity enables the theoretical contact point of each rolling surface to be kept in one direction, so that the service life of the hub unit is prolonged.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although mandrel 1 is used more herein; a non-base seal 2; a ring gear 3; a sensor 4; an outer ring 5; a holder 6; a roller 7; a base seal 8; a counter cap 9; an inner ring 10; bolts 11, etc., but does not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Claims (10)
1. The utility model provides a hub unit of many convexities raceway, includes the dabber, its characterized in that, the one end of dabber overlaps the inner circle admittedly, the dabber with the outer lane is cup jointed to the periphery of inner circle, the outer lane with the dabber the raceway annular space is formed between the inner circle, set up the holder in the raceway annular space, the holder facial make-up is equipped with a plurality of rollers, the dabber the inner circle the outer lane with the roller forms convexity contact surface.
2. The hub unit of the multi-convexity raceway according to claim 1, wherein a rolling groove I is concavely arranged on the periphery of the mandrel, and a convex cambered surface I is convexly arranged at the bottom of the rolling groove I; a rolling groove II is concavely formed in the periphery of the inner ring, and a convex cambered surface II is outwards convexly formed at the bottom of the rolling groove II; the inner periphery of the outer ring is provided with an annular inclined plane I and an annular inclined plane II, and a convex cambered surface III is arranged on the annular inclined plane I and the annular inclined plane II in an inward protruding mode.
3. The multi-convexity raceway hub unit of claim 2, wherein the outer peripheral wall surface of the roller is a convex arc surface four, and the convex arc surface four and the convex arc surface one/the convex arc surface two/the convex arc surface three form the convexity contact surface.
4. A multi-convexity raceway hub unit according to claim 3, characterized in that said convex arc surface one/said convex arc surface two/said convex arc surface three/said convex arc surface four consist of parabolic, logarithmic and multi-segment arc splices.
5. The multi-convexity raceway hub unit of claim 1, wherein a ring gear is fixedly sleeved on the periphery of the spindle, the ring gear is located in the raceway annular space, a sensor is plugged onto the outer ring, and the inner end of the sensor is aligned with the ring gear.
6. The multi-convexity raceway hub unit of claim 5, wherein said cage comprises two rings of cage bodies, each ring of said cage bodies having a plurality of rollers in an annular array, said ring gear being located between two rings of said cage bodies.
7. The multi-convexity raceway hub unit of claim 1, wherein one port of the raceway ring gap is plugged with a non-base seal and the other port of the raceway ring gap is plugged with a seal assembly comprising an inboard base seal with an outboard bearing counter cap.
8. The hub unit of claim 7, wherein the periphery of the mandrel is integrally provided with a flange, a plurality of mounting holes are formed in the flange, and bolts are inserted into the mounting holes.
9. The multi-convexity raceway hub unit of claim 8, wherein a sludge water channel is formed between said non-base seal and said flange.
10. The multi-convexity raceway hub unit of claim 1, wherein said spindle opens a central bore with an internal spline in the middle of said central bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322569647.3U CN220816260U (en) | 2023-09-21 | 2023-09-21 | Hub unit with multiple convexity rollaway nest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322569647.3U CN220816260U (en) | 2023-09-21 | 2023-09-21 | Hub unit with multiple convexity rollaway nest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816260U true CN220816260U (en) | 2024-04-19 |
Family
ID=90702410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322569647.3U Active CN220816260U (en) | 2023-09-21 | 2023-09-21 | Hub unit with multiple convexity rollaway nest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816260U (en) |
-
2023
- 2023-09-21 CN CN202322569647.3U patent/CN220816260U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103047295A (en) | Bearing for wheel | |
| US20100272382A1 (en) | Sealing device, rolling bearing and rolling bearing for wheel | |
| US8678660B2 (en) | Sealing device, rolling bearing and rolling bearing for wheel | |
| CN220816260U (en) | Hub unit with multiple convexity rollaway nest | |
| CN201170260Y (en) | Novel fretting wear-proof automobile hub bearing unit | |
| US20050238273A1 (en) | Bearing apparatus for supporting pinion shaft and pinion shaft support apparatus | |
| KR101814597B1 (en) | Sealing cap for wheel bearing | |
| CN220929941U (en) | Angular contact hub unit | |
| CN2597739Y (en) | Hub bearing | |
| CN212672227U (en) | Split type double-row tapered roller bearing of automobile wheel hub | |
| CN212708736U (en) | Simple hub unit | |
| CN209800529U (en) | Amorphous vertical shaft bearing | |
| CN209818526U (en) | Double-locking-point stamping retainer self-aligning roller bearing | |
| CN207500330U (en) | For the hub bearing of automobile | |
| CN201982499U (en) | Hub bearing unit for heavy duty truck | |
| CN210106409U (en) | Wheel hub bearing | |
| CN217539326U (en) | Hub bearing assembly with sewage discharge structure | |
| CN212928536U (en) | Double-channel automobile generator bearing with graphite ring | |
| CN217029672U (en) | High-precision rolling bearing | |
| CN101443564A (en) | Bearing device for wheel | |
| CN205350052U (en) | Angular contact ball bearing structure | |
| CN210553951U (en) | Wheel assembly of baby stroller | |
| CN210191006U (en) | Hub disc assembly | |
| CN216714983U (en) | Tapered roller bearing | |
| CN217107844U (en) | Wheel hub bearing unit assembly and vehicle using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |