CN118423378A - Self-retaining backing ring and hub bearing assembly - Google Patents
Self-retaining backing ring and hub bearing assembly Download PDFInfo
- Publication number
- CN118423378A CN118423378A CN202310086088.2A CN202310086088A CN118423378A CN 118423378 A CN118423378 A CN 118423378A CN 202310086088 A CN202310086088 A CN 202310086088A CN 118423378 A CN118423378 A CN 118423378A
- Authority
- CN
- China
- Prior art keywords
- self
- backing ring
- hub bearing
- retaining backing
- retaining
- 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.)
- Pending
Links
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 7
- 230000013011 mating Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The application relates to a self-retaining backing ring and a hub bearing assembly, wherein the self-retaining backing ring is used for a hub bearing and comprises an annular body and an elastic washer; the elastic washer is arranged on one axial side of the annular body, the elastic washer and the annular body form an axial anti-falling structure for an inner ring of the hub bearing, the cross section of the axial anti-falling structure is wedge-shaped, the axial anti-falling structure is axially provided with a first end axially inside and a second end axially outside, and the outer diameter of the first end is smaller than that of the second end. The self-retaining backing ring and the hub bearing assembly provided by the application can realize self-fixing of the self-retaining backing ring on the hub bearing without other fixing rings, and are convenient for assembly of the self-retaining backing ring and the hub bearing.
Description
Technical Field
The application relates to the technical field of bearings. More particularly, the present application relates to a self-retaining backing ring and hub bearing assembly.
Background
The hub bearing supports the shaft shoulder through the backing ring, when the backing ring is an independent component, the assembly and the carrying are inconvenient, in the related art, the backing ring and the hub bearing can be assembled together by adopting the fixing ring, one side of the fixing ring is connected with the backing ring, and the other side of the fixing ring is connected with the hub bearing, so that the backing ring and the hub bearing are assembled together, but the fixing ring is added to generally influence the locking force, plastic deformation of the fixing ring occurs under a large impact load, the gap of the bearing is increased, the safe operation of the hub bearing is influenced, the fixing ring is replaced frequently, and the cost is high.
Disclosure of Invention
The application aims to provide a self-retaining backing ring and a hub bearing assembly, wherein the self-retaining backing ring can be self-fixed on a hub bearing without other fixing rings, so that the self-retaining backing ring and the hub bearing are convenient to assemble.
The application provides a self-retaining backing ring which is used for a hub bearing, and comprises an annular body and an elastic washer;
The elastic washer is arranged on one axial side of the annular body, the elastic washer and the annular body form an axial anti-falling structure for an inner ring of the hub bearing, the cross section of the axial anti-falling structure is wedge-shaped, the axial anti-falling structure is axially provided with a first end axially inside and a second end axially outside, and the outer diameter of the first end is smaller than that of the second end.
In the embodiment of the application, the outer surface of the elastic gasket between the first end and the second end is an inclined surface; or the outer surface of the elastic washer between the first end and the second end is wavy.
In the embodiment of the application, the axial anti-drop structure continuously extends in the whole circumferential direction; or the axial anti-drop structures are arranged at intervals in the circumferential direction.
In the embodiment of the application, a first flange is arranged on one axial side of the annular body, and the elastic gasket is sleeved on the periphery of the first flange.
In the embodiment of the application, the elastic gasket is in interference fit, vulcanization connection or adhesion with the first flange.
In an embodiment of the present application, the elastic washer extends inward in the radial direction at the second end to form a bending portion, and the bending portion is located at an end portion of the first flange.
In the embodiment of the application, the surface of the annular body on one axial side with the axial anti-drop structure is provided with a wear-resistant coating or a wear-resistant patch.
The application also provides a hub bearing assembly comprising a hub bearing and the self-retaining backing ring, wherein the self-retaining backing ring is arranged on the outer side of the hub bearing in the axial direction and assembled to the hub bearing, and the self-retaining backing ring is used for supporting the hub bearing on a shaft shoulder.
In the embodiment of the application, a first accommodating groove is formed in one side of the inner ring, facing the self-retaining backing ring, the groove wall of the first accommodating groove is an inclined surface, and the axial anti-falling structure is matched with the first accommodating groove to assemble the self-retaining backing ring to the hub bearing.
In the embodiment of the application, a second flange is arranged on one side of the annular body, facing the inner ring, and is positioned on the radial outer side of the axial anti-drop structure, a second accommodating groove is arranged on one side of the inner ring, facing the self-retaining backing ring, and the second flange is in contact fit with the second accommodating groove.
In the self-retaining backing ring and the hub bearing assembly, the self-retaining backing ring is used for the hub bearing, the self-retaining backing ring is arranged on the outer side of the inner ring of the hub bearing in the axial direction, the hub bearing is supported on the shaft shoulder through the self-retaining backing ring, the self-retaining backing ring comprises an annular body and an elastic gasket, the elastic gasket is arranged on one axial side of the annular body, the elastic gasket and the annular body form an axial anti-disengaging structure for the inner ring of the hub bearing together, the axial anti-disengaging structure of the self-retaining backing ring can be matched with the inner ring of the hub bearing to connect the self-retaining backing ring with the hub bearing together, the self-retaining backing ring can be prevented from being disengaged from the hub bearing, the self-retaining backing ring is self-fixed on the hub bearing without other fixing rings, and the self-retaining backing ring and the hub bearing are convenient to assemble.
Drawings
FIG. 1 is a partial block diagram of a bearing assembly in an embodiment of the application;
FIG. 2 is a partial block diagram of a self-retaining backing ring in an embodiment of the application;
FIG. 3 is a partial cross-sectional view of a self-retaining backing ring in another embodiment of the application;
FIG. 4 is a partial block diagram of a bearing assembly in accordance with yet another embodiment of the present application;
fig. 5 is a partial block diagram of a self-retaining backing ring in accordance with yet another embodiment of the application.
Detailed Description
Specific embodiments according to the present application will be described below with reference to the accompanying drawings. The following detailed description and the accompanying drawings are provided to illustrate the principles of the application and not to limit the application to the preferred embodiments described, the scope of which is defined by the claims.
As shown in fig. 2, 3 and 5, the embodiment of the present application provides a self-retaining backing ring for a hub bearing, which is supported on a shoulder 600 by the self-retaining backing ring, and includes an inner ring 100, an outer ring 200 and rolling elements 300, for example, a double row roller bearing.
The self-retaining backing ring includes an annular body 400 and an elastomeric washer 500. The elastic washer 500 is provided at one axial side of the annular body 400, and the elastic washer 500 and the annular body 400 together form an axial anti-drop structure for the inner ring 100 of the hub bearing. The axial anti-drop structure has a wedge-shaped cross-section, and more precisely, a substantially wedge-shaped cross-section. The axial anti-drop structure has an axially inner first end and an axially outer second end, the outer diameter of the first end being smaller than the outer diameter of the second end, such that the axial anti-drop structure has a substantially wedge-shaped cross-sectional shape.
After the self-retaining backing ring is assembled to the inner ring 100 of the hub bearing, the axial anti-drop structure may cooperate with the inner ring 100 of the hub bearing to connect the self-retaining backing ring and the hub bearing together, and may prevent the self-retaining backing ring from being separated from the hub bearing, thereby realizing self-fixation of the self-retaining backing ring to the hub bearing.
Thus, in an embodiment of the present application, the self-retaining backing ring comprises an annular body 400 and an elastomeric washer 500; the elastic washer 500 is arranged on one axial side of the annular body 400, the elastic washer 500 and the annular body 400 together form an axial anti-falling structure for the inner ring 100 of the hub bearing, the axial anti-falling structure of the self-retaining backing ring can be matched with the inner ring 100 of the hub bearing, the self-retaining backing ring and the hub bearing are connected together, the self-retaining backing ring can be prevented from being separated from the hub bearing, the self-retaining backing ring is self-fixed on the hub bearing, other fixing rings are not needed, and the self-retaining backing ring and the hub bearing are convenient to assemble.
For example, a first accommodating groove 110 is disposed on a side of the inner ring 100 facing the self-retaining backing ring, a groove wall of the first accommodating groove 110 is an inclined surface, and an axial anti-disengaging structure is matched with the first accommodating groove 110 to assemble the self-retaining backing ring to the hub bearing.
In the embodiment of the present application, the outer surface of the elastic washer 500 between the first end and the second end is an inclined surface, that is, the outer surface of the elastic washer 500 is a conical surface on the whole circumference, and besides the friction force between the elastic washer 500 and the inner ring 100 can provide the axial force for preventing axial disengagement, the outer surface of the elastic washer 500 is a conical surface, which can also provide the axial force for preventing axial disengagement.
Alternatively, the outer surface of the elastic washer 500 between the first end and the second end has a wave shape, and the wave-shaped outer surface can increase friction force and enhance axial anti-falling capability. The wave-shaped peaks are compressed and the valleys provide a deformation space for the elastic washer 500 and the backing ring to be assembled to the inner ring 100.
Further, the outer surface of the elastic washer 500 may be wavy on the basis of a conical surface, as shown in the drawing, the elastic washer 500 includes a mating portion 510, the mating portion 510 is between the first end and the second end, and the radial outer surface of the mating portion 510 is conical and wavy, so that the axial anti-drop capability is enhanced to the greatest extent.
In the embodiment of the application, the axial anti-drop structure continuously extends in the whole circumferential direction, namely, the annular axial anti-drop structure is formed in the whole circumferential direction, and the connecting contact surface of the axial anti-drop structure and the hub bearing has large area, so that larger axial force for axial anti-drop can be provided.
Of course, the axial anti-drop structures may also be arranged at intervals in the circumferential direction. A plurality of axial anti-drop structures are arranged in the circumferential direction, and the plurality of axial anti-drop structures can be uniformly distributed on the circumference, for example, 3,5 and the like can be arranged. In this form, the radial deformability of the spaced axial anti-slip arrangement is better, and thus the self-retaining backing ring is more convenient to mount to the inner race 100 of the hub bearing.
In the embodiment of the application, a first flange 410 is disposed on one axial side of the annular body 400, and the elastic washer 500 is sleeved on the outer periphery of the first flange 410, so as to connect the elastic washer 500 with the annular body 400.
The first flange 400 may be a first flange 400 that extends continuously in the entire circumferential direction to form a ring shape, and the ring-shaped elastic washer 500 is fitted around the outer circumference of the first flange 410 to form an axial anti-drop structure that extends continuously in the entire circumferential direction.
Alternatively, the first flange 400 may be a first flange 400 continuously extending in the entire circumferential direction to form a ring shape, and a plurality of elastic washers 500 are spaced around the outer circumference of the first flange 410 to form axial anti-drop structures spaced in the circumferential direction.
Alternatively, the first flange 400 may be a plurality of flanges spaced apart in the circumferential direction, and the plurality of elastic washers 500 are sleeved on the outer circumference of the first flange 410 in a one-to-one correspondence, forming an axial anti-drop structure spaced apart in the circumferential direction.
In this case, a first receiving groove 110 is provided at a side of the inner ring 100 of the hub bearing facing the self-retaining backing ring, and an axial anti-disengaging structure is engaged with the first receiving groove 110 to assemble the self-retaining backing ring to the hub bearing.
In the embodiment of the present application, the elastic washer 500 is in interference fit, vulcanization connection or adhesion with the first flange 410, so as to achieve reliable connection between the elastic washer 500 and the first flange 410, and prevent the elastic washer 500 from being misplaced or separated from the first flange 410 when the self-retaining backing ring is assembled to the hub bearing.
In the embodiment of the present application, the elastic washer 500 extends radially inward at the second end to form a bent portion 520, and the bent portion 520 is located at an end of the first flange 410. That is, the elastic washer 500 further includes a bending portion 520, the bending portion 520 is connected to the mating portion 510, and the bending portion 520 and the mating portion 510 together can wrap a large portion of the first flange 410.
After the elastic washer 500 is assembled to the first flange 410, the engaging portion 510 may wrap the radially outer side of the first flange 410, and the bent portion 520 may wrap the end of the first flange 410, so that damage to the hub bearing caused by the end of the first flange 410 during the assembly process may be avoided.
A deformation accommodation gap is formed between one side of the axial anti-falling structure, which is close to the inner ring 100, and the groove wall of the first accommodating groove 110, so that extrusion force of the inner ring 100 to the self-retaining backing ring after assembly is avoided, and the self-retaining effect is improved.
Specifically, a predetermined axial gap distance is provided between the bending portion 520 and the groove wall of the first accommodating groove 110, where the predetermined axial gap distance is greater than zero, so as to form a deformation accommodating gap.
In the embodiment of the present application, the surface of the annular body 400 on the axial side having the axial anti-drop structure is provided with the wear-resistant coating 430 or the wear-resistant patch. Because the end surface of the inner ring 100 is directly and relatively attached to the annular body 400, in order to avoid abrasion between the inner ring 100 and the annular body 400, the surface of one axial side of the annular body 400 with the axial anti-drop structure is provided with the wear-resistant coating 430 or the wear-resistant patch, so that the wear resistance is improved, and larger abrasion caused by radial runout is avoided.
Of course, a wear-resistant coating or a wear-resistant patch may be provided on the side of the inner ring 100 facing the annular body 400, so that wear resistance may be improved, and larger wear between the inner ring 100 and the annular body 400 may be avoided.
As shown in fig. 1 and 4, the present application further provides a hub bearing assembly comprising a hub bearing and the self-retaining collar described above, the self-retaining collar being disposed axially outwardly of the hub bearing and assembled thereto for supporting the hub bearing on the shoulder 600.
The hub bearing includes an inner race 100, an outer race 200, and rolling elements 300, which are not described in detail herein. For example, a double row roller bearing is possible.
The self-retaining backing ring is the self-retaining backing ring described above, and includes an annular body 400 and an elastic gasket 500. The elastic washer 500 is provided at one axial side of the annular body 400, and the elastic washer 500 and the annular body 400 together form an axial anti-drop structure for the inner ring 100 of the hub bearing. And will not be described in detail herein.
After the self-retaining backing ring is assembled to the inner ring 100 of the hub bearing, the axial anti-drop structure may cooperate with the inner ring 100 of the hub bearing to connect the self-retaining backing ring and the hub bearing together, and may prevent the self-retaining backing ring from being separated from the hub bearing, thereby realizing self-fixation of the self-retaining backing ring to the hub bearing.
Therefore, with the hub bearing assembly of the embodiments of the present application, the self-retaining backing ring is self-secured to the hub bearing without the need for additional retainer rings, facilitating assembly of the self-retaining backing ring and the hub bearing. No other fixing rings exist between the self-retaining backing ring and the inner ring 100 in the axial direction, so that plastic deformation of other fixing rings caused by axial impact force is avoided, the gap of the bearing is increased, and the safe operation of the hub bearing is ensured.
In the embodiment of the application, a first accommodating groove 110 is disposed on one side of the inner ring 100 facing the self-retaining backing ring, the groove wall of the first accommodating groove 110 is an inclined surface, and the axial anti-disengaging structure is matched with the first accommodating groove 110 to assemble the self-retaining backing ring to the hub bearing. The self-retaining backing ring is self-fixed to the hub bearing, and is mainly realized by matching an axial anti-falling structure formed by the elastic washer 500 and the annular body 400 with the first accommodating groove 110 of the inner ring 100.
A portion of the inner surface of the inner ring 100 is recessed radially outward to form a first receiving groove 110. That is, the longitudinal section of the first receiving groove 110 is "L" shaped. During processing, only a part of the inner surface of the inner ring 100 is required to be removed outwards along the radial direction, and the processing is convenient.
In the embodiment of the present application, a second flange 420 is disposed on a side of the annular body 400 facing the inner ring 100, the second flange 420 is located at a radial outer side of the axial anti-disengaging structure, that is, the second flange 420 is located at a radial outer side of the first flange 410, a second accommodating groove 120 is disposed on a side of the inner ring 100 facing the self-retaining backing ring, and the second flange 420 is in contact fit with the second accommodating groove 120. The second flange 420 and the second accommodating groove 120 can serve as auxiliary support and positioning, and larger relative dislocation in the radial direction can be avoided.
The longitudinal section of the second accommodating groove 120 is in a U shape, so that the second flange 420 and the second accommodating groove 120 are in contact fit, and the auxiliary supporting and positioning functions can be better achieved.
Therefore, with the hub bearing assembly of the present application, the hub bearing is supported on the shoulder 600 by the self-retaining backing ring, which is self-secured to the hub bearing without the need for additional retainer rings, facilitating assembly of the self-retaining backing ring and the hub bearing. No other fixing rings exist between the self-retaining backing ring and the inner ring 100 in the axial direction, so that plastic deformation of other fixing rings caused by axial impact force is avoided, the gap of the bearing is increased, and the safe operation of the hub bearing is ensured.
As described above, although the exemplary embodiments of the present application have been described in the specification with reference to the accompanying drawings, the present application is not limited to the above-described specific embodiments, and the scope of the present application should be defined by the claims and their equivalents.
List of reference numerals
Inner race 100
First accommodating groove 110
Second accommodating groove 120
Outer ring 200
Rolling element 300
Annular body 400
First flange 410
Second flange 420
Wear-resistant coating 430
Elastic gasket 500
Mating portion 510
Bending part 520
Shoulder 600
Claims (10)
1. A self-retaining backing ring for a hub bearing, the self-retaining backing ring comprising an annular body (400) and an elastic washer (500);
The elastic washer (500) is arranged on one axial side of the annular body (400), the elastic washer (500) and the annular body (400) form an axial anti-falling structure for the inner ring (100) of the hub bearing, the cross section of the axial anti-falling structure is wedge-shaped, the axial anti-falling structure is axially provided with a first end axially inside and a second end axially outside, and the outer diameter of the first end is smaller than that of the second end.
2. The self-retaining backing ring of claim 1, wherein an outer surface of the resilient gasket (500) between the first end and the second end is beveled; or the outer surface of the elastic washer (500) between the first end and the second end is wavy.
3. The self-retaining backing ring of claim 1, wherein the axial anti-slip structure extends continuously in the entire circumferential direction; or the axial anti-drop structures are arranged at intervals in the circumferential direction.
4. The self-retaining backing ring according to claim 1, characterized in that a first flange (410) is provided on one axial side of the annular body (400), the elastic washer (500) being fitted around the periphery of the first flange (410).
5. The self-retaining backing ring of claim 4, wherein the resilient gasket (500) is interference fit, vulcanization bonded or glued to the first flange (410).
6. The self-retaining backing ring of claim 4, wherein the resilient gasket (500) extends radially inward at the second end to form a bend (520), the bend (520) being located at an end of the first flange (410).
7. The self-retaining backing ring according to claim 1, characterized in that the surface of the annular body (400) on the axial side with the axial anti-slip structure is provided with a wear-resistant coating (430) or a wear-resistant patch.
8. A hub bearing assembly comprising a hub bearing and a self-retaining backing ring according to any one of claims 1-7, said self-retaining backing ring being arranged axially outwardly of said hub bearing and assembled to said hub bearing, said self-retaining backing ring being adapted to support said hub bearing at a shoulder (600).
9. The hub-bearing assembly of claim 8, wherein a side of the inner ring (100) facing the self-retaining backing ring is provided with a first receiving groove (110), a groove wall of the first receiving groove (110) is an inclined surface, and the axial anti-disengaging structure cooperates with the first receiving groove (110) to assemble the self-retaining backing ring to the hub-bearing.
10. The hub-bearing assembly according to claim 9, characterized in that a second flange (420) is provided on a side of the annular body (400) facing the inner ring (100), the second flange (420) being located radially outside the axial anti-slip structure, a second receiving groove (120) is provided on a side of the inner ring (100) facing the self-retaining backing ring, and the second flange (420) is in contact engagement with the second receiving groove (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310086088.2A CN118423378A (en) | 2023-02-01 | 2023-02-01 | Self-retaining backing ring and hub bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310086088.2A CN118423378A (en) | 2023-02-01 | 2023-02-01 | Self-retaining backing ring and hub bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118423378A true CN118423378A (en) | 2024-08-02 |
Family
ID=92305889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310086088.2A Pending CN118423378A (en) | 2023-02-01 | 2023-02-01 | Self-retaining backing ring and hub bearing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118423378A (en) |
-
2023
- 2023-02-01 CN CN202310086088.2A patent/CN118423378A/en active Pending
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