CN2816461Y - Rubber sealing device for bearing - Google Patents
Rubber sealing device for bearing Download PDFInfo
- Publication number
- CN2816461Y CN2816461Y CN 200520029877 CN200520029877U CN2816461Y CN 2816461 Y CN2816461 Y CN 2816461Y CN 200520029877 CN200520029877 CN 200520029877 CN 200520029877 U CN200520029877 U CN 200520029877U CN 2816461 Y CN2816461 Y CN 2816461Y
- Authority
- CN
- China
- Prior art keywords
- ring
- bearing
- seal
- rubber
- seal ring
- 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 - Fee Related
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- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a kind of bearing rubber sealing device, it is made of back-up ring (2) and rubber seal (1), back-up ring (2) and bearing inner race (5) outer surface interference fit, rubber seal (1) is enclosed within on the back-up ring, the cross section is " people " font, seal ring bottom (a) is positioned at the arc groove on bearing inner race (5) outer surface, and closely cooperate with back-up ring simultaneously, one pin (b) in the seal ring outside and the top interference fit of back-up ring (2), the outer surface of seal ring (c) embeds in the groove of bearing outer ring (4) internal surface.It combines the characteristics of labyrinth sealing, dust cover and contact-type rubber lip formula seal ring, has solved the problem that seal ring easily comes off, leaks fat well, and sealing effect is good.
Description
Affiliated technical field
The utility model belongs to a kind of sealing mechanism, relates generally to a kind of bearing rubber sealing device.
Background technique
The sealing of bearing has very big influence to the operating life of bearing, and sealing reliably is to make bearing reach important prerequisite than the long life.On the one hand sealing mechanism must prevent oiling agent from bearing to external leakage; On the other hand, it should prevent that also the external pollution thing from entering bearing inside.Pollutant has many and diverse influences to bearing, and a large amount of particulates that enter bearing can serve as abrasive particle, cause the wearing and tearing of bearing.This will cause the play of bearing to strengthen, and noise raises, and cause shorten working life; If bigger hard particles enters bearing race inside, and when the load of bearing is big, will in impression, cause spot corrosion, thereby reduce the fatigue life of bearing.Vehicle Propeller Shaft Supporting Bracket is a bearing contact-type rubber lip seal (see figure 1) commonly used with the sealing of the former employing of bearing.The bearing that this conventional seals circle is housed often occurs unusual in running, the sealability of bearing both sides sealing circle is bad, the fat phenomenon appears leaking, and seal ring often fractures or comes off, lubricating grease in the bearing runs off, a small amount of lubricating grease foreign matter that mixing is dry and hard on raceway and steel ball, causes the bearing dry grinding, so just causes bearing to damage inefficacy prematurely.Therefore must the sealing configuration of bearing be improved, to reach good using effect.
Summary of the invention
The purpose of this utility model provides a kind of bearing rubber sealing device, has solved the problem that seal ring easily comes off, leaks fat well, and sealing effect is good.
The purpose of this utility model can adopt following technological scheme to realize: it is made of back-up ring and rubber seal, back-up ring and bearing inner race outer surface interference fit, rubber seal is enclosed within the inboard of back-up ring, the cross section is " people " font, the seal ring bottom is positioned at the arc groove on the bearing inner race outer surface, and closely cooperate with back-up ring simultaneously, a pin in the seal ring outside and the top interference fit of back-up ring, the outer surface of seal ring embeds in the groove of bearing outer ring internal surface.
The utility model is arranged on the bearing ring both sides.Near inner ring both sides sealing circle, an arc groove is arranged, when bearing operation, seal ring is inboard to be equivalent to the single-stage labyrinth seal structure with arc groove, when bearing operation, the temperature height, desaturation the gap of lubricating grease by this tortuous labyrinth the time produce throttle effect and reach the purpose that resistance is leaked.A side of the seal ring bottom formation contact seal that contacts with back-up ring simultaneously prevents that once more the lubricating grease after the throttling from leaking outside, and this is the first line of defence of sealing mechanism leakproof.One pin and the back-up ring top interference fit in the seal ring outside form lip seal, has big lip spring-back force, the sectional shape of seal ring make lip to back-up ring have better follow compensatory, thereby obtain good sealing effect, this is the defence line, second road of this structure leakproof seal.The elastic caoutchouc of seal ring outer surface embeds in the groove of inner surface, forms contact seal, prevents that lubricating grease from radially transferring to inner surface by the inner ring of rotation, and another plays the effect of leakproof, and this is the three lines of defence of this structure leakproof seal.The very little small sircle hole of one diameter can be set on seal ring, make and realized pressure balance between the inside and outside portion of bearing, lubricating grease is difficult for overflowing.When one pin of the back-up ring of seal ring outside and seal ring forms lip seal, and can stop extraneous foreign matter to enter bearing inside.Back-up ring and bearing inner race outer surface interference fit, the design of back-up ring have also solved former in the caducous problem of bearing sealed ring better.The bearing that has this seal arrangement is through complicated road conditions test, and sealing effect is good, and every index all reaches requirement of experiment.Need the radial bearing of sealing all can adopt this " people " font sealing configuration, it has good market prospects and promotional value, will substitute some traditional seal rings, produces good economic benefit and social benefit.It combines the characteristics of labyrinth sealing, dust cover and contact-type rubber lip formula seal ring, has solved the problem that seal ring easily comes off, leaks fat well, and sealing effect is good.
Description of drawings
Accompanying drawing 1 is the structural representation of existing bearing sealed ring.
Accompanying drawing 2 is a structural representation of the present utility model.
Accompanying drawing 3 is the structural representation of rubber seal.
Accompanying drawing 4 is positioned at structural representation on the bearing for the utility model.
Accompanying drawing 6 is the enlarged diagram that the rubber seal outside one pin combines with back-up ring top.
Accompanying drawing 7 is the enlarged diagram that the rubber seal outer surface combines with bearing outer ring.
Among the figure: 1, rubber seal, 2, back-up ring, 3, skeleton, 4, the outer ring, 5, inner ring, 6, rubber seal mechanism, 7, through hole.
Embodiment
In conjunction with the accompanying drawings, specific embodiment of the utility model is described.
As shown in the figure: described rubber sealing device 6 mainly constitutes (as shown in Figure 2) by back-up ring 2 and rubber seal 1, back-up ring 2 and bearing inner race 5 outer surface interference fit, rubber seal 1 is enclosed within the inboard of back-up ring 2, its cross section is " people " font, seal ring 1 inboard bottom with back-up ring 2 closely cooperates, near bearing inner race outer surface both sides sealing circle, an arc groove is arranged, the lip a of rubber seal bottom is (as Fig. 3,4, shown in 5) be positioned at arc groove, the one pin b in the seal ring outside is (as Fig. 3,4, shown in 6) form lip seal with the top interference fit of back-up ring 2, the outer surface c of seal ring 1 is (as Fig. 3,4, shown in 7) be embedded into and form contact seal in the groove of outer ring 4 internal surfaces.Middle part at the inboard lip a of seal ring is provided with a circular hole 7, can make bearing realize pressure balance between inside and outside.In view of the situation of existing bearing sealed ring easy-rupturing, seal ring skeleton 3 described in the utility model adopts the Spring Steel Band material, can strengthen the intensity of seal ring greatly, and simultaneously, the toughness of whole backbone sealing ring is better, is easy to assembling.
Claims (2)
1, a kind of bearing rubber sealing device, it is characterized in that: it is made of back-up ring (2) and rubber seal (1), back-up ring (2) and bearing inner race (5) outer surface interference fit, rubber seal (1) is enclosed within on the back-up ring, the cross section is " people " font, seal ring bottom (a) is positioned at the arc groove on bearing inner race (5) outer surface, and closely cooperate with back-up ring simultaneously, one pin (b) in the seal ring outside and the top interference fit of back-up ring (2), the outer surface of seal ring (c) embeds in the groove of bearing outer ring (4) internal surface.
2, bearing rubber sealing device according to claim 1 is characterized in that: a through hole (7) is set on seal ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520029877 CN2816461Y (en) | 2005-01-20 | 2005-01-20 | Rubber sealing device for bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520029877 CN2816461Y (en) | 2005-01-20 | 2005-01-20 | Rubber sealing device for bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2816461Y true CN2816461Y (en) | 2006-09-13 |
Family
ID=36996270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520029877 Expired - Fee Related CN2816461Y (en) | 2005-01-20 | 2005-01-20 | Rubber sealing device for bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2816461Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884877A (en) * | 2017-04-10 | 2017-06-23 | 无锡市海峰海林精工机械制造有限公司 | A kind of automobile engine anti-gas-leak bearing seal structure |
-
2005
- 2005-01-20 CN CN 200520029877 patent/CN2816461Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884877A (en) * | 2017-04-10 | 2017-06-23 | 无锡市海峰海林精工机械制造有限公司 | A kind of automobile engine anti-gas-leak bearing seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |