CN200961636Y - Hub bearing rotary seal structure - Google Patents
Hub bearing rotary seal structure Download PDFInfo
- Publication number
- CN200961636Y CN200961636Y CN 200620111460 CN200620111460U CN200961636Y CN 200961636 Y CN200961636 Y CN 200961636Y CN 200620111460 CN200620111460 CN 200620111460 CN 200620111460 U CN200620111460 U CN 200620111460U CN 200961636 Y CN200961636 Y CN 200961636Y
- Authority
- CN
- China
- Prior art keywords
- dust cover
- hub bearing
- utility
- model
- oil sealing
- 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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Abstract
The utility model discloses a bush bearing rotary seal equipment, comprising a dust cover (3), a lubricant seal (2) positioned on the outside of the dust cover (3) and a lubricant seal frame (1), wherein one end of the lubricant seal (2) is equipped with an internal lip (2a) and an external lip (2b), with the internal lip (2a) interference fit with the side of the dust cover (3) and the external lip (2b) engaged with the internal side on the dust cover top (3). The utility model decreases the friction and the rotary torque and lowers the oil temperature through decreasing the contact area between the lubricant seal and the dust cover, which thereof keeps the original pressure for the contact place of the lubricant seal and makes the contact place long pressed on the dust cover for enhancement of sealing and lengthening operation life of the bush bearing. The utility model is simple-structured, delicate in design and easy in operation, applicable to popularization in large scale.
Description
Technical field
The utility model relates to a kind of Sealing, relates in particular to a kind of hub bearing rotary seal structure.
Background technique
The normal form sealing of adopting three lip oil sealings to add dust cover of automobile hub bearing, the sealing configuration of this multilayer proofing has better action aspect fat, the dustproof and anti-muddy water leaking, but at home, aspect economy car and little car, come with some shortcomings especially: because oil sealing adopts three lips to contact with dust cover, itself frictional force and rotation torque are bigger, and temperature rise is higher; Oil sealing is a rubber parts, only by producing contact pressure between rubber magnitude of interference and the dust cover, easily produces plastic deformation and certain wearing and tearing are arranged after after a while, being equivalent to magnitude of interference reduces, contact pressure reduces, and forms Spielpassung at last and between the dust cover, causes muddy water to enter in the hub bearing; Add economy car and little car and use in small and medium-sized cities more, road conditions are relatively poor, and the car owner is relatively poor to the maintaining of car, just cause the wearing and tearing of oil seal lip extremely serious in a short time, can not prevent entering of muddy water, make hub bearing generation abnormal sound, lose efficacy in advance.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of can effectively reduce frictional force, reduces the hub bearing rotary seal structure of oil temperature.
The technical solution of the utility model is as follows: a kind of hub bearing rotary seal structure, comprise dust cover and be located at dust cover outer oil sealing and oil tight skeleton, its key is: an end of described oil sealing has epipharynx and outer lip, the sidewall interference fit of epipharynx and described dust cover wherein, and the inwall interference fit at outer lip and described dust cover top.
The utility model changes the oil sealing of traditional three procheilon structures into two procheilon structures, have stop outside muddy water to enter in the hub bearing and prevent that the hub bearing internal grease from revealing function in, by reducing the area of contact between oil sealing and the dust cover, effectively reduce frictional force and rotation torque, reduced oily temperature.
As a kind of improvement of the present utility model, the inner side surface of above-mentioned epipharynx and outer lip is conical surface, and is parallel to each other between two conical surfaces.Wherein, the inner edge of epipharynx and dust cover interference fit, the outer rim of outer lip and dust cover interference fit make that like this area of contact between inside and outside lip and the dust cover can reduce as much as possible.
As another kind of improvement the of the present utility model, have angle between above-mentioned epipharynx and the shaft axis, the size of this angle is 20～30 °.Point of contact between epipharynx and the dust cover is far away apart from oil tight skeleton, makes epipharynx form the overhang effect, can effectively compensate the wearing and tearing of rubber, prolongs seal action.
As another improvement of the present utility model, the oil sealing of above-mentioned outer lip root is provided with annular groove, in this annular groove metal spring is housed.After increasing metal spring, because the endurance of spring is better, can make oil sealing contact on dust cover and adhere to certain pressure for a long time, after oil sealing turns round a period of time, there are certain wearing and tearing the contact position between oil sealing and the dust cover, effect by metal spring, make the oil sealing contact position still keep original pressure, permanent being pressed on the dust cover of energy, muddy water is difficult for entering in the hub bearing like this, strengthen protection against dust of the present utility model and anti-muddy water greatly, effectively prolonged the working life of hub bearing.
Beneficial effect: the utility model has effectively reduced frictional force and rotation torque by reducing the area of contact between oil sealing and the dust cover, has reduced oily temperature; It can make the oil sealing contact position remain original pressure, is pressed on the dust cover muchly, thereby has strengthened sealing effect, has prolonged the working life of hub bearing greatly.The utlity model has simple in structure, characteristics such as be skillfully constructed, implement easily, be suitable for large-scale promotion and use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a user mode reference drawing of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As depicted in figs. 1 and 2, the utility model is made of parts such as oil tight skeleton 1, oil sealing 2, dust cover 3 and metal springs 4, wherein between oil tight skeleton 1 and the oil sealing 2 by adhesive securement together, be sleeved on the dust cover 3 after again integral body be pressed between the inside and outside circle 5,6 of hub bearing.One end of oil sealing 2 has epipharynx 2a and outer lip 2b, and the inner side surface of inside and outside lip 2a, 2b is conical surface, and is parallel to each other between two conical surfaces.Wherein the sidewall interference fit of the inner edge of epipharynx 2a and described dust cover 3 has angle between epipharynx 2a and the shaft axis, and the size of this angle is 20～30 °; The inwall interference fit at the outer rim of outer lip 2b and described dust cover 3 tops.So outside muddy water can not enter in the hub bearing, and the grease of hub bearing inside can not outwards be revealed.
Can further find out from Fig. 1, Fig. 2, be the integrative-structure by molding and forming between oil sealing 2 and epipharynx 2a and the outer lip 2b, is provided with annular groove on the oil sealing 2 of outer lip 2b root, and metal spring 4 is housed in this annular groove.When assembling metal spring 4, by apply a pretightening force to it, after being seated, metal spring 4 has outside tension force, oil sealing can contact all the time on dust cover 3 and adhere to certain pressure like this, after oil sealing 2 turns round a period of times, there are certain wearing and tearing the contact position between oil sealing 2 and the dust cover 3, effect by metal spring 4, make oil sealing 2 contact position still keep original pressure, can be permanent be pressed on the dust cover 3, muddy water is difficult for entering in the hub bearing like this, has strengthened protection against dust of the present utility model and anti-muddy water greatly, has effectively prolonged the working life of hub bearing.
Claims (4)
1, a kind of hub bearing rotary seal structure, comprise dust cover (3) and be located at dust cover (3) outer oil sealing (2) and oil tight skeleton (1), it is characterized in that: an end of described oil sealing (2) has epipharynx (2a) and outer lip (2b), the sidewall interference fit of epipharynx (2a) and described dust cover (3) wherein, and the inwall interference fit at outer lip (2b) and described dust cover (3) top.
2, hub bearing rotary seal structure according to claim 1 is characterized in that: the inner side surface of described epipharynx (2a) and outer lip (2b) is conical surface, and is parallel to each other between two conical surfaces.
3, hub bearing rotary seal structure according to claim 1 and 2 is characterized in that: have angle between described epipharynx (2a) and the shaft axis, the size of this angle is 20～30 °.
4, hub bearing rotary seal structure according to claim 1 is characterized in that: the oil sealing (2) of described outer lip (2b) root is provided with annular groove, and metal spring (4) is housed in this annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620111460 CN200961636Y (en) | 2006-09-29 | 2006-09-29 | Hub bearing rotary seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620111460 CN200961636Y (en) | 2006-09-29 | 2006-09-29 | Hub bearing rotary seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200961636Y true CN200961636Y (en) | 2007-10-17 |
Family
ID=38798151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620111460 Expired - Lifetime CN200961636Y (en) | 2006-09-29 | 2006-09-29 | Hub bearing rotary seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200961636Y (en) |
-
2006
- 2006-09-29 CN CN 200620111460 patent/CN200961636Y/en not_active Expired - Lifetime
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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: 20071017 |
|
| EXPY | Termination of patent right or utility model |