CN201269269Y - Press mounting and sealing combination for bearing - Google Patents
Press mounting and sealing combination for bearing Download PDFInfo
- Publication number
- CN201269269Y CN201269269Y CNU2008200999415U CN200820099941U CN201269269Y CN 201269269 Y CN201269269 Y CN 201269269Y CN U2008200999415 U CNU2008200999415 U CN U2008200999415U CN 200820099941 U CN200820099941 U CN 200820099941U CN 201269269 Y CN201269269 Y CN 201269269Y
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- CN
- China
- Prior art keywords
- bearing
- press
- ring
- sealing
- inner race
- 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
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- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a sealing combination for the press-assembly of a bearing, comprising an inner ring and an outer ring of the bearing. With a gap between each other, the inner ring and the outer ring are rotated reciprocally; a sealing cover for press-assembly comprises an annular sheet steel framework, and is arranged at a port of the gap; and an annular rubber belt is sleeved on the sheet steel framework. The sealing combination for the press-assembly of the bearing is characterized in that: an inner annular seal lip and an outer annular seal lip arranged on the rubber belt is of interference contact with a smooth contact face of the inner ring of the bearing; an angle Beta between an extended center line of the inner seal lip and the outer seal lip and an axis of the bearing ranges between 40 and 50 degrees. Due to the multi-layer separation caused by the leakage of the lubricating oil, the sealing combination for the press-assembly of the bearing has the advantages of improving the sealing effect, prolonging the service life of the rubber belt, effectively avoiding the impacts the clearances of the bearings and vibration of crankshafts to the sealing performance of the bearings, and simultaneously easily ensuring the sealing performance of the bearing in the manufacturing process.
Description
Technical field
The utility model belongs to a kind of bearing, specifically, is the bearing press mounting seal combination that a kind of motorcycle bent axle adopts.
Background technique
The sealing of motorcycle crankshaft bearing normally adopts single face to press-fit the sealing cover combination, it mainly acts on is to prevent that the under static state stored lubricant oil in bearing of crankshaft bearing runs off, thereby guarantee that motor has enough lubricant oil to be lubricated, and reaches the purpose of quick starting when starting.If sealing effect is bad, will cause the lubricant oil that is stored in the bearing to run off, the moment bearing inside of engine start then can make bearing formation dry friction quicken the wearing and tearing of bearing because of lacking oil lubrication, strengthens the starting torque of motor, form abnormal sound, cause bearing to lose efficacy in advance.
The structure that press-fits the sealing cover combination is mainly three lipped joint touches, bearing inner race and bearing outer ring are sleeved on together, rotate mutually between the two, packing lubrication oil in the gap between described bearing inner race outer wall and the bearing outer ring inwall, for guaranteeing the oil preventing performance of bearing, the sealing cover that press-fits of ring-type is installed in the port in gap, this press-fits the steel plate frame that sealing cover comprises ring-type, suit ring-shaped rubber band on steel plate frame, the outer rim side of described rubber tape closely contacts with described bearing outer ring inwall, the interior ring side of rubber tape contacts with the interference of described bearing inner race outer wall, described bearing inner race has annular recess with the surface of contact of rubber tape, as shown in Figure 1, in this rubber tape is provided with, in, the sealing lip of outer three road annulars contacts with bearing inner race, press-fited the sealing cover limited space, the sealing form is single lip side point contact, wherein a contacted sealing lip in side with the inner ring groove is main sealing lip, the variation of contact amount is subjected to the influence of inner ring groove quality, and the wall of inner ring groove is very thin, its quality of processing and quench after distortion wayward, the sealing effect after causing sealing cover to press-fit is bad.
The shortcoming that traditional bearing press-fits sealing cover is: the sealing bad connection that press-fits sealing cover and inner ring groove, and installation back crankshaft vibration affects also for the bearing seal performance, the long-term use, rubber leakproof lip seal are easy to lose efficacy, and cause lubricant oil to run off.
The model utility content
The purpose of this utility model provides a kind of bearing press mounting seal combination, can strengthen press-fiting the leakproof seal effect of sealing cover, guarantees that bearing uses for a long time, and lubricant oil can not run off.
For achieving the above object, a kind of bearing press mounting seal combination described in the utility model, comprise the bearing inner race and the bearing outer ring that are sleeved on together, rotate mutually between the two, leave the gap between described bearing inner race outer wall and the bearing outer ring inwall, the sealing cover that press-fits of ring-type is installed in the port in described gap, this press-fits the steel plate frame that sealing cover comprises ring-type, be set with the ring-shaped rubber band on the steel plate frame, the outer shroud of described rubber tape closely contacts with described bearing outer ring inwall, the interior ring of rubber tape contacts with the interference of described bearing inner race outer wall, its key is: in described rubber tape is provided with, the sealing lip of outer two road annulars contacts with the surface of contact interference of bearing inner race, this surface of contact is a smooth surface, described in, the center elongation line of outer lip and the angle β of bearing axis are 40～50 °.
Outer surface to bearing inner race improves, and changes smooth flat into, and rubber tape and inner ring cylindrical adopt radial interference, to guarantee the applying of plane and sealing lip.Seal form changes face contact type into by original some contact form, and face contact biggest advantage is exactly that sealing contact surface is long-pending big, has also prolonged the working life of rubber tape, simultaneously from making the sealability that also guarantees bearing easily.
The thickness of described outer lip is 0.25～0.35mm, leaves distance L between epipharynx and the outer lip, and this distance L is 1～1.5 times of described outer lip thickness.
Described epipharynx is than the long 0.2～0.5mm of outer lip, and the thickness of described epipharynx is 0.4～0.6mm, and the contact width of this epipharynx and described smooth surface is 0.2～0.4mm.
Face contact biggest advantage is exactly that sealing contact surface is long-pending big, and natural effect is all right, and deficiency then is that running torque is bigger.By the adjusting of size, realize also just having controlled running torque to press-fiting the control of sealing cover and bearing inner race magnitude of interference than row.
Two sealing lips that are uneven in length produce different interference fit with bearing inner race respectively and form different seal rings, cause multilayer to isolate to the seepage of lubricant oil, to guarantee that lubricant oil can not pass through, reach the effect of sealing fully.
Remarkable result of the present utility model is: the some contact form that press-fits sealing cover and bearing inner race changes face contact type into, improved the leakproof seal effect, also prolonged the working life of rubber tape, two sealing lips that are uneven in length form different seal rings respectively, seepage to lubricant oil causes multilayer to isolate, this kind sealing configuration has effectively been avoided the influence of bringing for the bearing seal performance because of bearing clearance and crankshaft vibration, simultaneously from making the sealability that also guarantees bearing easily.
Description of drawings
Fig. 1 is the existing structural representation that press-fits the sealing cover combination;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is a scheme of installation of the present utility model;
Fig. 4 is the structural representation that press-fits sealing cover.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As Fig. 2, shown in 3: a kind of bearing press mounting seal combination, by bearing inner race 1, bearing outer ring 2, press-fiting sealing cover 3 forms, wherein bearing inner race 1 and bearing outer ring 2 are sleeved on together, rotate mutually between the two, leave the gap between described bearing inner race 1 outer wall and bearing outer ring 2 inwalls, what ring-type was installed in the port in described gap press-fits sealing cover 3, this press-fits the steel plate frame 4 that sealing cover 3 comprises ring-type, be set with ring-shaped rubber band 5 on the steel plate frame 4, the outer shroud of described rubber tape 5 closely contacts with described bearing outer ring 2 inwalls, the interior ring of rubber tape 5 contacts with described bearing inner race 1 outer wall interference, in described rubber tape 5 is provided with, the sealing lip of outer two road annulars contacts with the surface of contact A interference of bearing inner race 1, this surface of contact A is a smooth surface, described in, outer lip 6,7 the center elongation line and the angle β of bearing axis are 40 ° or 41 ° or 45 ° or 50 °.
As shown in Figure 4: the thickness of described outer lip 7 is 0.25mm or 0.3mm or 0.31mm or 0.35mm, leaves distance L between epipharynx 6 and the outer lip 7, and this distance L is 1 times or 1.1 times or 1.2 times or 1.3 times or 1.4 times or 1.5 times of described outer lip 7 thickness.
Described epipharynx 6 is than outer lip 7 long 0.2mm or 0.3mm or 0.4mm or 0.5mm, and the thickness of described epipharynx 6 is 0.4mm or 0.5mm or 0.6mm, and this epipharynx 6 is 0.2mm or 0.3mm or 0.4mm with the contact width of described smooth surface S.
Outer surface to bearing inner race improves, and changes smooth flat into, and rubber tape 5 adopts radial interference with the inner ring cylindrical, to guarantee the applying of plane and sealing lip.Seal form changes face contact type into by original some contact form, and face contact biggest advantage is exactly that sealing contact surface is long-pending big, has also prolonged the working life of rubber tape 5, simultaneously from making the sealability that also guarantees bearing easily.
Deficiency then is that running torque is bigger.By the adjusting of size, realize also just having controlled running torque to press-fiting the control of sealing cover 3 and bearing inner race 1 magnitude of interference than row.
Claims (3)
1, a kind of bearing press mounting seal combination, comprise the bearing inner race (1) and the bearing outer ring (2) that are sleeved on together, rotate mutually between the two, leave the gap between described bearing inner race (1) outer wall and bearing outer ring (2) inwall, what ring-type was installed in the port in described gap press-fits sealing cover (3), this press-fits the steel plate frame (4) that sealing cover (3) comprises ring-type, be set with ring-shaped rubber band (5) on the steel plate frame (4), the outer shroud of described rubber tape (5) closely contacts with described bearing outer ring (2) inwall, the interior ring of rubber tape (5) contacts with described bearing inner race (1) outer wall interference, it is characterized in that: in described rubber tape (5) is provided with, the sealing lip of outer two road annulars contacts with surface of contact (A) interference of bearing inner race (1), this surface of contact (A) is a smooth surface, described in, outer lip (6,7) the center elongation line and the angle β of bearing axis are 40～50 °.
2, bearing press mounting seal combination according to claim 1 is characterized in that: the thickness of described outer lip (7) is 0.25～0.35mm, leaves distance L between epipharynx (6) and the outer lip (7), and this distance L is 1～1.5 times of described outer lip (7) thickness.
3, bearing press mounting seal combination according to claim 1 and 2, it is characterized in that: described epipharynx (6) is than the long 0.2～0.5mm of outer lip (7), the thickness of described epipharynx (6) is 0.4～0.6mm, and this epipharynx (6) is 0.2～0.4mm with the contact width of described smooth surface (S).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200999415U CN201269269Y (en) | 2008-09-10 | 2008-09-10 | Press mounting and sealing combination for bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200999415U CN201269269Y (en) | 2008-09-10 | 2008-09-10 | Press mounting and sealing combination for bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269269Y true CN201269269Y (en) | 2009-07-08 |
Family
ID=40841868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200999415U Expired - Lifetime CN201269269Y (en) | 2008-09-10 | 2008-09-10 | Press mounting and sealing combination for bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201269269Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182762A (en) * | 2011-04-29 | 2011-09-14 | 郭怡 | Bearing of vehicle direction operation system |
-
2008
- 2008-09-10 CN CNU2008200999415U patent/CN201269269Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182762A (en) * | 2011-04-29 | 2011-09-14 | 郭怡 | Bearing of vehicle direction operation system |
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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 |
Granted publication date: 20090708 |
|
| CX01 | Expiry of patent term |