CN203560298U - Automobile hub bearing unit - Google Patents
Automobile hub bearing unit Download PDFInfo
- Publication number
- CN203560298U CN203560298U CN201320654602.XU CN201320654602U CN203560298U CN 203560298 U CN203560298 U CN 203560298U CN 201320654602 U CN201320654602 U CN 201320654602U CN 203560298 U CN203560298 U CN 203560298U
- Authority
- CN
- China
- Prior art keywords
- ring
- bearing
- seal
- retainer
- automobile hub
- 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.)
- Expired - Lifetime
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 229920000459 Nitrile rubber Polymers 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229920006351 engineering plastic Polymers 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000004519 grease Substances 0.000 abstract description 5
- 230000001050 lubricating effect Effects 0.000 abstract description 5
- 238000002955 isolation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses an automobile hub bearing unit belonging to the technical field of machinery. The automobile hub bearing unit comprises a bearing outer ring, a bearing inner ring, a rolling body, a retainer, a seal ring, a check ring, and a locking ring, wherein a circular space is formed between the bearing inner ring and the bearing outer ring, a rolling path is arranged in the circular space, and the rolling body is mounted in the rolling path through the retainer; two lateral end faces of the circular space both are sealed by the ring-shaped seal ring and the check ring, wherein the inner diameter of the seal ring and the inner diameter of the check ring are in interference fit, the outer diameter of the seal ring and the inner diameter of the bearing outer ring are in the interference fit, the inner diameter of the check ring and the outer diameter of the bearing inner ring are in the interference fit; due to the seal ring and the locking ring arranged in the bearing unit, the problem of isolation between a bearing work region and the outside is solved effectively; the bearing inner ring comprises two half inner rings symmetrically mounted side by side, wherein the half inner rings are connected and locked tightly by the locking ring, and two sides of each half inner ring have different thicknesses, on one hand, lubricating grease in a bearing can be prevented from leaking out, on the other hand, the bearing unit can be relatively convenient to assemble.
Description
Technical field
The utility model relates to a kind of automobile hub bearing, belongs to mechanical field.
Background technique
Automobile hub bearing is for driving wheel or the non-driving wheel of car, and requiring has higher load-carrying ability, compact structure, non-maintaining, high reliability, and therefore bearing must have good sealability.At present, single lip or lips sealing structure circle that automobile hub bearing adopts, without the function of leakproof fat between anti-muddy water and bearing two inner rings.The anti-muddy water structure of the wheel hub using on market now, is much the anti-mud water sealing structure of bearing external sealed, and this combination seal, requires installing space large, during the high and installation fee of cost.Between bearing two inner rings, there is in addition seepage fat phenomenon, so in the urgent need to improving sealing means and the performance of hub-bearing unit more.
Model utility content
The defect existing for prior art, the purpose of this utility model is to propose a kind of automobile hub bearing, has good sealability, and simple in structure, easy to assembly.
In order to realize foregoing invention object, the utility model by the following technical solutions:
A kind of automobile hub bearing, comprise bearing outer ring, bearing inner race, rolling element, retainer, seal ring, back-up ring and retainer etc., between described bearing inner race and outer ring, form an annular space, in this annular space, be provided with raceway, rolling element is arranged in raceway by retainer; The both sides end face of described annular space is by annular seal ring and retaining ring sealing, and wherein, the external diameter of the internal diameter of described seal ring and back-up ring internal diameter, seal ring and bearing outer ring internal diameter, back-up ring internal diameter and bearing inner race external diameter are interference fit; Above-mentioned bearing inner race comprises two symmetrical half inner rings of installing side by side, by retainer, connect and lock, the internal diameter of described bearing half inner ring connecting end is inwardly provided with a concave step, the concave step of two and half inner rings forms a groove, described retainer is " one " font, be arranged in above-mentioned groove, wherein the external diameter of retainer inwall and bearing inner race is interference fit, prevents that lubricating grease from flowing out from the gap location of two and half inner rings.
Above-mentioned retainer comprises engineering plastics skin, and is bonded in the nitrile butadiene rubber internal layer on the outer internal diameter of engineering plastics.
Above-mentioned bearing half inner ring connecting end thickness is less than the free-ended thickness in outside, and non-so same Thickness Design can make bearing unit more convenient when assembling.
Described bearing outer ring internal diameter both sides offer respectively the concave step that a circle card is established seal ring.
Described seal ring comprises O-ring seal and be wrapped in the skeleton in O-ring seal, and seal ring external diameter is arranged in the concave step of above-mentioned bearing outer ring by O-ring seal.
Described O-ring seal comprises the first lip, the second lip and the 3rd lip, described back-up ring cross section is " ㄈ " type, comprise external diameter, internal diameter, and the vertical wall of connection internal-and external diameter, wherein, the inwall interference fit of the first lip, the second lip and back-up ring internal diameter, interference fit inside the 3rd lip and back-up ring vertical wall, the external diameter interference fit of the outer wall of back-up ring internal diameter and bearing inner race.Back-up ring is buckled between seal ring and bearing inner race, effectively prevents that fat phenomenon from appearring leaking in bearing unit.
The cross section of described skeleton is L shaped, and the stage casing of described O-ring seal is supported fixing by skeleton.
Described rolling element is spherical rolling body.
Described retainer adopts glass fibre reinforced nylon retainer.
Described O-ring seal adopts nitrile butadiene rubber circle, and described outer ring, inner ring, rolling element all adopt GCr15 steel to make, and the skeleton on seal ring and back-up ring all adopt 2Cr13 steel to make, and retainer adopts glass fibre reinforced nylon to make.
Adopting after technique scheme, the beneficial effects of the utility model are:
1. by being arranged on seal ring, the back-up ring in bearing unit, solved kind of bearings working area and extraneous isolating problem, can prevent that muddy water from entering bearing unit inside, be specially adapted to use on rainy day and the peaceful road of mud;
2. above-mentioned bearing inner race adopts two and half inner rings compositions, and connects locking with retainer, and half inner ring thickness of two sides difference, and one side can prevent that the lubricating grease in bearing from overflowing, and can make on the other hand bearing unit more convenient when assembling.
Accompanying drawing explanation
Fig. 1 is preferred embodiment bearing unit structural representation of the present utility model;
Fig. 2 is preferred embodiment seal ring of the present utility model and back-up ring structural representation.
In figure: 1, outer ring; 11, outer ring concave step; 12, outer ring groove; 2, inner ring; 21, free end; 22, connecting end; 23, inner ring concave step; 3, rolling element; 4, retainer; 5, back-up ring; Internal diameter 51; External diameter 52; Vertical wall 53; 6, seal ring; 61, O-ring seal; 611 first lips; 612 second lips; 613 the 3rd outlets; 614 seal ring projections; 62, skeleton; 7, retainer.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of automobile hub bearing, comprise bearing outer ring 1, bearing inner race 2, rolling element 3, retainer 4, seal ring 6, back-up ring 5 and retainer 7 etc., between described bearing inner race 2 and outer ring 1, form an annular space, in this annular space, be provided with raceway, rolling element 3 is arranged in raceway by retainer 4; The both sides end face of described annular space seals by annular seal ring 6 and back-up ring 5, wherein, seal ring 6 is positioned at the outside of back-up ring 5, and the external diameter of the internal diameter of described seal ring 6 and back-up ring 5 internal diameters, seal ring 6 and bearing outer ring 1 internal diameter, back-up ring 5 internal diameters and bearing inner race 2 external diameters are interference fit; Above-mentioned bearing inner race 2 comprises two symmetrical half inner rings of installing side by side, by retainer 7, connect and lock, described bearing half inner ring 2 one end is outwardly free end 21, one end is inwardly connecting end 22, and the concave step 23 that the internal diameter of connecting end 22 is provided with 23, two half inner rings of a concave step forms a groove, described retainer 7 is " one " font, be arranged in above-mentioned groove, retainer 7 comprises engineering plastics skin, and is bonded in the nitrile butadiene rubber internal layer on the outer internal diameter of engineering plastics.Wherein the nitrile butadiene rubber internal layer of retainer 7 and the external diameter of bearing inner race 2 are interference fit, prevent that lubricating grease from flowing out from the gap location of two and half inner rings.Above-mentioned bearing half inner ring 2 connecting end 22 thickness are less than the thickness of outside free end 21, and non-so same Thickness Design can make bearing unit more convenient when assembling.Above-mentioned bearing inner race 2 adopts two and half inner rings compositions, and connects locking with retainer 7, and half inner ring thickness of two sides difference, and one side can prevent that the lubricating grease in bearing from overflowing, and can make on the other hand bearing unit more convenient when assembling.
The concave step 11 that described bearing outer ring 1 internal diameter both sides offer respectively a circle card establishes seal ring 6.
As shown in Figure 2, described seal ring 6 comprises O-ring seal 61 and is wrapped in the skeleton 62 in O-ring seal; Above-mentioned O-ring seal 61 comprises the first lip 611, the second lip 612 and the 3rd lip 613, described back-up ring 5 cross sections are " ㄈ " type, comprise external diameter 52, internal diameter 51, and the vertical wall 53 of connection internal-and external diameter, wherein, the inwall interference fit of the first lip 611, the second lip 612 and back-up ring internal diameter 51, the 3rd lip 613 and back-up ring vertical wall 53 inner side interference fit.Seal ring external diameter is arranged in above-mentioned bearing outer ring concave step 11 by O-ring seal 61, the external diameter interference fit of the outer wall of back-up ring internal diameter 51 and bearing inner race 2.By being arranged on the seal ring 6 in bearing unit, back-up ring 5, has solved bearing working district and extraneous isolating problem, can prevent that muddy water from entering bearing unit inside, is specially adapted to use on rainy day and the peaceful road of mud.
Last time, bearing outer ring 1 concave step 11 was further provided with a groove 12 near raceway end, O-ring seal 61 external diameters of seal ring 6 are provided with the boss 614 of a correspondence, the cooperation of groove 12 and boss 614, make the better tightness of seal ring 6 and bearing outer ring 1, make seal ring 6 more be fixedly mounted between bearing inner race and outer ring simultaneously, prevent displacement.
In the present embodiment, described rolling element 3 is spherical rolling body, and described retainer 4 adopts glass fibre reinforced nylon retainer.Described outer ring 1, inner ring 2, rolling element 3 all adopt GCr15 steel to make, and the skeleton 62 on seal ring 6 and back-up ring 5 all adopt 2Cr13 steel to make, and retainer 4 adopts glass fibre to strengthen.
In the present embodiment, described interference fit is specially: seal ring 6 is close contact with back-up ring 5, bearing outer ring 1, and back-up ring 5 is close contact with bearing inner race free end 21, and described retainer 7 and bearing inner race connecting end 22 are close contact.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure transformation that utilizes the utility model description to do; or directly or indirectly use the technical field that is attached to other Related products, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. an automobile hub bearing, it is characterized in that: comprise bearing outer ring, bearing inner race, rolling element, retainer, seal ring, back-up ring and retainer, between described bearing inner race and outer ring, form an annular space, in this annular space, be provided with raceway, rolling element is arranged in raceway by retainer; The both sides end face of described annular space is by annular seal ring and retaining ring sealing, and wherein, the external diameter of the internal diameter of described seal ring and back-up ring internal diameter, seal ring and bearing outer ring internal diameter, back-up ring internal diameter and bearing inner race external diameter are interference fit; Above-mentioned bearing inner race comprises two symmetrical half inner rings of installing side by side, by retainer, connect and lock, the internal diameter of described bearing half inner ring connecting end is inwardly provided with a concave step, the concave step of two and half inner rings forms a groove, described retainer is " one " font, be arranged in above-mentioned groove, wherein the external diameter of retainer inwall and bearing inner race is interference fit.
2. a kind of automobile hub bearing as claimed in claim 1, is characterized in that: above-mentioned bearing half inner ring connecting end thickness is less than the free-ended thickness in outside.
3. a kind of automobile hub bearing as claimed in claim 1, is characterized in that: described bearing outer ring internal diameter both sides offer respectively the concave step that a circle card is established seal ring.
4. a kind of automobile hub bearing as claimed in claim 1, is characterized in that: described seal ring comprises O-ring seal and be wrapped in the skeleton in O-ring seal, and seal ring external diameter is arranged in the concave step of above-mentioned bearing outer ring by O-ring seal.
5. a kind of automobile hub bearing as described in claim 1 or 4, it is characterized in that: described O-ring seal comprises the first lip, the second lip and the 3rd lip, described back-up ring cross section is " ㄈ " type, comprise external diameter, internal diameter, and the vertical wall of connection internal-and external diameter, wherein, the inwall interference fit of the first lip, the second lip and back-up ring internal diameter, interference fit inside the 3rd lip and back-up ring vertical wall, the external diameter interference fit of the outer wall of back-up ring internal diameter and bearing inner race.
6. a kind of automobile hub bearing as claimed in claim 4, is characterized in that: the cross section of described skeleton is L shaped, and the stage casing of described O-ring seal is supported fixing by skeleton.
7. a kind of automobile hub bearing as claimed in claim 1, is characterized in that: above-mentioned retainer comprises engineering plastics skin, and is bonded in the nitrile butadiene rubber internal layer on the outer internal diameter of engineering plastics.
8. a kind of automobile hub bearing as claimed in claim 1, is characterized in that: described rolling element is spherical rolling body.
9. a kind of automobile hub bearing as claimed in claim 1, is characterized in that: described retainer adopts glass fibre reinforced nylon retainer.
10. a kind of automobile hub bearing as described in claim 1 or 4, is characterized in that: described O-ring seal adopts nitrile butadiene rubber circle, and described outer ring, inner ring, rolling element all adopt GCr15 steel, and the skeleton on seal ring and back-up ring all adopt 2Cr13 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654602.XU CN203560298U (en) | 2013-10-22 | 2013-10-22 | Automobile hub bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654602.XU CN203560298U (en) | 2013-10-22 | 2013-10-22 | Automobile hub bearing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560298U true CN203560298U (en) | 2014-04-23 |
Family
ID=50510021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320654602.XU Expired - Lifetime CN203560298U (en) | 2013-10-22 | 2013-10-22 | Automobile hub bearing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065861A (en) * | 2020-09-16 | 2020-12-11 | 浙江恒鼎机械有限公司 | Hub bearing with good waterproof and dustproof performance |
-
2013
- 2013-10-22 CN CN201320654602.XU patent/CN203560298U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065861A (en) * | 2020-09-16 | 2020-12-11 | 浙江恒鼎机械有限公司 | Hub bearing with good waterproof and dustproof performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |