CN205226094U - Car take -up pulley double column angular contact ball bearing - Google Patents
Car take -up pulley double column angular contact ball bearing Download PDFInfo
- Publication number
- CN205226094U CN205226094U CN201521066812.2U CN201521066812U CN205226094U CN 205226094 U CN205226094 U CN 205226094U CN 201521066812 U CN201521066812 U CN 201521066812U CN 205226094 U CN205226094 U CN 205226094U
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- Prior art keywords
- lip
- bearing
- angular contact
- seal groove
- ring
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Abstract
The utility model discloses a car take -up pulley double column angular contact ball bearing, including bearing inner race and sealing washer, bearing inner race's surface border department is equipped with seal groove no. 1, seal groove no. 1 includes cell wall and tank bottom, still be equipped with the annular table rank between seal groove no. 1 and bearing inner race's the terminal surface, the sealing washer is including sealed main part and skeleton, the inner circle of sealed main part is equipped with the inner circle seal lip, the inner circle seal lip includes main lip, vice lip, dust lip and seal lip, main lip and the interference of cell wall axial, the outer radial surface interference on dust lip and annular table rank, be equipped with the clearance between vice lip and the tank bottom. In the above -mentioned bearing, setting up vice lip between main lip and the dust lip, being equipped with certain clearance between vice lip and the tank bottom, even there is a small amount of lubricating grease to get into the seal groove, lubricating grease is filled in the clearance, forms again sealedly together, prevents that more lubricating grease from revealing, also can prevent that the dust from getting into the bearing simultaneously inside, the working life of bearing has so been prolonged.
Description
Technical field
This utility model relates to technical field of bearings, is specifically related to a kind of automobile tension pulley double-row angular contact bal bearing.
Background technique
Figure 1 shows that the structural representation of a kind of automobile tension pulley double-row angular contact bal bearing in prior art.In the structure shown here, bearing inner race 10, bearing outer ring 20 and seal ring 30 is comprised.Wherein the outer surface edge of bearing inner race is provided with seal groove 1, and the internal surface edge of bearing outer ring is provided with the seal groove two 21 corresponding with seal groove one.The inner ring sealing lip that seal ring 30 comprises skeleton 32, match with seal groove one and the outer ring sealing lip matched with seal groove two, inner ring sealing lip is three bead structures, comprises main lip 33, dust excluder lips 35 and sealing lip 34.The structure of seal groove one as shown in Figure 2, comprises cell wall 12 and bottom land 13, between seal groove one and the end face of bearing inner race, is also provided with ring-shaped step 14, and the external diameter of ring-shaped step 14 is between the external diameter and the external diameter of bottom land 13 of bearing inner race.In said structure, main lip 33 is connected with the axial interference of cell wall 12, and dust excluder lips 35 is connected with the outer surface radial interference of ring-shaped step.
Above-mentioned automobile tension pulley double-row angular contact bal bearing is installed on motor car engine side, working condition is: transient speed 12000r/min, continuous maximum speed 6000 ~ 8000r/min, operating temperature-40 ~ 160 DEG C, greatest pulley tension force 2500 ~ 3000N, conventional tension force 1000 ~ 2000N, belt pulley cornerite 120 ~ 180 ° of belt pulleys and bearing centre difference are 0 ~ 30mm, because of uneven loading action, two ditch angular contact bearing subjects radial and axial active force, or wherein a raceway groove is large more than the effect of bearing of another raceway groove, so bearing easily produces larger radial vibration and axial float.
Under above-mentioned working condition, the existing automobile tension pulley double-row angular contact bal bearing life-span is shorter, can not meet life requirements.The principal element of bearing failure shown in Fig. 1 is that bearing seal was lost efficacy, and gently then causes bearing to produce abnormal sound, heavy then lose greasy property.Be embodied in: (1) Bearing inner lubricating grease leakage out; (2) external dust or rainwater enter Bearing inner; (3) bearing temperature raises, and retainer lost efficacy; Sealed ring deformation, even come off; (5) bearing falls apart or premature failure etc.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of novel automobile tension pulley double-row angular contact bal bearing, to address the deficiencies of the prior art.
In order to solve the problems of the technologies described above, the technological scheme that the utility model provides is as follows: a kind of automobile tension pulley double-row angular contact bal bearing, at least comprises:
Bearing inner race, the outer surface edge of described bearing inner race is provided with seal groove one, described seal groove one comprises cell wall and bottom land, is also provided with ring-shaped step between described seal groove one and the end face of bearing inner race, and the external diameter of this ring-shaped step is between the external diameter and the external diameter of bottom land of bearing inner race;
Seal ring, described seal ring comprises sealed body and skeleton, the inner ring of described sealed body is the inner ring sealing lip matched with seal groove one, described inner ring sealing lip comprises main lip, secondary lip, dust excluder lips and sealing lip, described main lip and the axial interference of cell wall, the outer surface radial interference of described dust excluder lips and ring-shaped step, is provided with gap between described secondary lip and bottom land.
As preferably, the axial magnitude of interference between described main lip and cell wall is 0.15 ~ 0.25mm.
As preferably, the radial interference amount between described dust excluder lips and ring-shaped step outer surface is 0.1 ~ 0.15mm.
As preferably, the gap between described secondary lip and bottom land is 0.1 ~ 0.15mm.
Further, be also provided with waist between the entirety that described main lip, secondary lip and dust excluder lips are formed and sealed body, described waist selfsealings main body is arranged to main lip lopsidedness.
As preferably, the tilt angle of described waist is 15 ± 1 °.
Further, also comprise bearing outer ring, the internal surface edge of described bearing outer ring is provided with the seal groove two corresponding with seal groove one, and the outer ring of described sealed body is provided with the outer ring sealing lip matched with seal groove two.
Further, the outside of described outer ring sealing lip is provided with squeezing groove, and the groove width of described squeezing groove progressively reduces to bottom land from notch.
Further, described outer ring sealing lip is provided with fillet away from the edge, side of squeezing groove.
Automobile tension pulley double-row angular contact bal bearing of the present utility model, has the following advantages:
(1) secondary lip is set between main lip and dust excluder lips, certain gap is provided with between secondary lip and bottom land, even if there is a small amount of lubricating grease to enter seal groove, lubricating grease is filled in gap, form the sealing of another road, prevent more lubricating grease from revealing, also can prevent dust from entering Bearing inner simultaneously, so extend the working life of bearing;
(2) waist is obliquely installed, and makes main lockjaw be attached on the inclination cell wall of seal groove one, plays compensating action, improve the sealability of bearing, extend the operating life of bearing after main lip wearing and tearing;
(3) be provided with squeezing groove outside the outer ring sealing lip of seal ring, inner side is provided with fillet, and in installation process, squeezing groove is out of shape, and the external diameter of outer ring sealing lip is diminished, and the inner side of outer ring sealing lip is provided with fillet and seamlessly transits simultaneously, is easilier press-fit into place by seal ring.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of automobile tension pulley double-row angular contact bal bearing in prior art;
Fig. 2 is the partial structurtes schematic diagram at the present embodiment bearing inner race seal groove one place;
Fig. 3 is the partial structurtes schematic diagram of automobile tension pulley double-row angular contact bal bearing in the present embodiment.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 3, a kind of automobile tension pulley double-row angular contact bal bearing of the present embodiment, comprises bearing inner race 10, bearing outer ring 20 and seal ring 30.Wherein the outer surface edge of bearing inner race 10 is provided with seal groove 1, and sealing groove 1 as shown in Figure 2, comprises the cell wall 12 and bottom land 13 that are obliquely installed.Between seal groove 1 and the end face of bearing inner race 10, be also provided with ring-shaped step 14, the external diameter of this ring-shaped step 14 is between the external diameter and the external diameter of bottom land 13 of bearing inner race 10.The seal groove two 21 corresponding with seal groove 1 is provided with in the internal surface edge of its bearing outer ring 20.
In the present embodiment, seal ring 30 comprises sealed body 31 and the skeleton 32 of ring-type, and the outer ring of sealed body 31 is provided with the outer ring sealing lip 38 matched with seal groove 2 21.The outside of this outer ring sealing lip 38 is provided with squeezing groove 39, and this squeezing groove 39 is T-shaped or cone structure, and its groove width progressively reduces to bottom land from notch.This outer ring sealing lip 38 is provided with fillet away from the edge, side of squeezing groove 39, and this fillet plays the effect of arc transition.Press-fiting in process, squeezing groove is out of shape, and the external diameter of outer ring sealing lip is diminished, and simultaneously the inner side of outer ring sealing lip is provided with fillet and seamlessly transits, and is easilier press-fit into place by seal ring.
In the present embodiment, seal ring 30 inner ring be the inner ring sealing lip matched with seal groove 1, this inner ring sealing lip is 4 lip seal structures, comprise main lip 33, secondary lip 36, dust excluder lips 35 and sealing lip 34, wherein main lip 33 and the axial interference of cell wall 12, the outer surface radial interference of dust excluder lips 35 and ring-shaped step 14, certain gap is provided with between secondary lip 36 and bottom land 13, sealing lip 34 selfsealings subject freedom extends to the outer surface of bearing inner race 10, and be provided with certain gap between the outer surface of sealing lip 34 and bearing inner race 10, the normal operation of bearing can not be affected.
As preferably, in the present embodiment, axial magnitude of interference between main lip 33 and cell wall 12 is 0.15 ~ 0.25mm, and the radial interference amount between dust excluder lips 35 and ring-shaped step 14 outer surface is 0.1 ~ 0.15mm, and the gap between secondary lip 36 and bottom land 13 is 0.1 ~ 0.15mm.
The maximum difference of the present embodiment and prior art is, add secondary lip, be 4 lip seal structures by 3 lip seal structural changes, be provided with certain gap between secondary lip and bottom land, even if there is a small amount of lubricating grease to enter seal groove, lubricating grease is filled in gap, form the sealing of another road, prevent more lubricating grease from revealing, also can prevent dust from entering Bearing inner simultaneously, so extend the working life of bearing.
Further, in the present embodiment, be also provided with waist 37 between the entirety formed in main lip, secondary lip and dust excluder lips and sealed body, this waist 37 selfsealings main body is arranged to main lip lopsidedness.As preferably, inclined angle alpha is 15 ± 1 °.Waist combines with the rake of skeleton simultaneously, provides the precompression for main lip, makes main lockjaw be attached on the inclination cell wall of seal groove one, plays compensating action, improve the sealability of bearing, extend the operating life of bearing after main lip wearing and tearing.Simultaneously by controlling the size of waist, the starting torque of bearing can be controlled, improve the usability of bearing.
In a word; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. an automobile tension pulley double-row angular contact bal bearing, is characterized in that, at least comprises:
Bearing inner race, the outer surface edge of described bearing inner race is provided with seal groove one, described seal groove one comprises cell wall and bottom land, is also provided with ring-shaped step between described seal groove one and the end face of bearing inner race, and the external diameter of this ring-shaped step is between the external diameter and the external diameter of bottom land of bearing inner race;
Seal ring, described seal ring comprises sealed body and skeleton, the inner ring of described sealed body is the inner ring sealing lip matched with seal groove one, described inner ring sealing lip comprises main lip, secondary lip, dust excluder lips and sealing lip, described main lip and the axial interference of cell wall, the outer surface radial interference of described dust excluder lips and ring-shaped step, is provided with gap between described secondary lip and bottom land.
2. according to automobile tension pulley double-row angular contact bal bearing according to claim 1, it is characterized in that, the axial magnitude of interference between described main lip and cell wall is 0.15 ~ 0.25mm.
3. according to automobile tension pulley double-row angular contact bal bearing according to claim 1, it is characterized in that, the radial interference amount between described dust excluder lips and ring-shaped step outer surface is 0.1 ~ 0.15mm.
4. according to automobile tension pulley double-row angular contact bal bearing according to claim 1, it is characterized in that, the gap between described secondary lip and bottom land is 0.1 ~ 0.15mm.
5. according to the automobile tension pulley double-row angular contact bal bearing described in any one of claim 1-4, it is characterized in that, also be provided with waist between the entirety that described main lip, secondary lip and dust excluder lips are formed and sealed body, described waist selfsealings main body is arranged to main lip lopsidedness.
6. according to automobile tension pulley double-row angular contact bal bearing according to claim 5, it is characterized in that, the tilt angle of described waist is 15 ± 1 °.
7. according to automobile tension pulley double-row angular contact bal bearing according to claim 5, it is characterized in that, also comprise bearing outer ring, the internal surface edge of described bearing outer ring is provided with the seal groove two corresponding with seal groove one, and the outer ring of described sealed body is provided with the outer ring sealing lip matched with seal groove two.
8. according to automobile tension pulley double-row angular contact bal bearing according to claim 7, it is characterized in that, the outside of described outer ring sealing lip is provided with squeezing groove, and the groove width of described squeezing groove progressively reduces to bottom land from notch.
9. according to the automobile tension pulley double-row angular contact bal bearing described in claim 7 or 8, it is characterized in that, described outer ring sealing lip is provided with fillet away from the edge, side of squeezing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521066812.2U CN205226094U (en) | 2015-12-21 | 2015-12-21 | Car take -up pulley double column angular contact ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521066812.2U CN205226094U (en) | 2015-12-21 | 2015-12-21 | Car take -up pulley double column angular contact ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226094U true CN205226094U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521066812.2U Expired - Fee Related CN205226094U (en) | 2015-12-21 | 2015-12-21 | Car take -up pulley double column angular contact ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226094U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538637A (en) * | 2018-12-27 | 2019-03-29 | 无锡市利钧轴承有限公司 | Bearing sealed ring |
| CN109958719A (en) * | 2017-12-26 | 2019-07-02 | 舍弗勒技术股份两合公司 | Bearing with contact type sealing structure |
| CN110307260A (en) * | 2019-07-10 | 2019-10-08 | 无锡诚石轴承有限公司 | Electric tool bearing seal ring assembly |
| CN110425223A (en) * | 2019-07-31 | 2019-11-08 | 宁波万丰轴承有限公司 | A kind of deep groove ball bearing |
| CN113153900A (en) * | 2021-04-21 | 2021-07-23 | 嘉兴嘉优易轴承科技有限公司 | Gradual change compensation formula bearing seal structure with aligning function |
| CN115143191A (en) * | 2022-06-24 | 2022-10-04 | 重庆市新超力轴承有限公司 | Waterproof and oilproof sealed bearing |
-
2015
- 2015-12-21 CN CN201521066812.2U patent/CN205226094U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958719A (en) * | 2017-12-26 | 2019-07-02 | 舍弗勒技术股份两合公司 | Bearing with contact type sealing structure |
| CN109538637A (en) * | 2018-12-27 | 2019-03-29 | 无锡市利钧轴承有限公司 | Bearing sealed ring |
| CN110307260A (en) * | 2019-07-10 | 2019-10-08 | 无锡诚石轴承有限公司 | Electric tool bearing seal ring assembly |
| CN110425223A (en) * | 2019-07-31 | 2019-11-08 | 宁波万丰轴承有限公司 | A kind of deep groove ball bearing |
| CN113153900A (en) * | 2021-04-21 | 2021-07-23 | 嘉兴嘉优易轴承科技有限公司 | Gradual change compensation formula bearing seal structure with aligning function |
| CN115143191A (en) * | 2022-06-24 | 2022-10-04 | 重庆市新超力轴承有限公司 | Waterproof and oilproof sealed bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20201221 |