CN203604657U - Box type oil seal with blocking disc - Google Patents
Box type oil seal with blocking disc Download PDFInfo
- Publication number
- CN203604657U CN203604657U CN201320783862.7U CN201320783862U CN203604657U CN 203604657 U CN203604657 U CN 203604657U CN 201320783862 U CN201320783862 U CN 201320783862U CN 203604657 U CN203604657 U CN 203604657U
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- oil seal
- lip
- seal
- inner oil
- block plate
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- Sealing Devices (AREA)
Abstract
The utility model relates to a seal element, in particular to a box type oil seal with a blocking disc. The box type oil seal with the blocking disc comprises an outer oil seal and an inner oil seal, the inner oil seal is arranged on the annular inner side of the outer oil seal, the inner oil seal comprises an inner oil seal framework and an inner oil seal dust-proof lip, the inner oil seal dust-proof lip comprises a side dust-proof lip body located on the outer side, wherein the box type oil seal further comprises the blocking disc, the blocking disc is arranged on the end face of the outer side of the outer oil seal framework, the blocking disc is combined with the outer oil seal through a bottom turnup, the inner oil seal dust-proof lip further comprises an end face dust-proof lift located at the bottom, the inner oil seal end face dust-proof lip is in interference fit with the inner side end face of the blocking disc, the blocking disc is provided with an inner hole turnup, and an inner oil seal bottom protrusion is arranged on the end face of the bottom of the inner oil seal and at the position corresponding to the blocking disc inner hole turnup. The box type oil seal with the blocking disc has excellent capacity of blocking large external particles and impact and damage resistance, meanwhile effectively prevents granule foreign objects from reaching the position of a main seal lip of the outer oil seal, improves the seal effect, and prolongs the service life.
Description
Technical field
The utility model relates to a kind of Sealing, especially a kind of box-type oil seal with block plate.
Background technique
As the box-type oil seal that is applied to serious pollution environment, in order to improve defence and the barrier effect of foreign matter to external world, need to adopt and there is multiple tracks dust excluder lips, form the structure of the dustproof passage of mazy type: the outside anchor ring of the skeleton flange of outer oil seal and inner oil seal forms Spielpassung, for stopping that extraneous larger foreign matter enters oil sealing inside; In the skeleton of outer oil seal, side ring surface and the outside of the inner oil seal lip that prevents dust forms respectively gap and interference fit enter oil sealing inside granule foreign matter for stopping and further invades; The dust excluder lips interruption-forming interference fit of the skeleton with cone conformation anchor ring of outer oil seal and inner oil seal, stops by the foreign matter of dustproof lip and further invades; The dustproof lip of outer oil seal and the skeleton anchor ring of inner oil seal form transition fit, form last one barrier, stop foreign matter to arrive primary seal lip place, and it is damaged.Stop layer by layer and isolate mazy path structure design by this, can effectively stop that most extraneous foreign matters enters primary seal lip is damaged, destroying its sealability.But, due in serious pollution environment, can there is the particulate matter that a lot of granularities are different, in the time that inner oil seal rotates with axle, due to the effect of relative movement, larger particulate matter can produce very large percussion to inner oil seal, when long-term use, can cause rubber part to produce wearing and tearing and the situation such as even tear, especially more serious for the rubber harm of the outer ring face portion of inner oil seal, if this part rubber is destroyed, the skeleton flange of itself and outer oil seal cooperatively interacts, to lose efficacy for stopping the effect of larger extraneous foreign matter, so extraneous foreign matter can enter oil sealing inside in a large number, the lower dustproof lip in inner oil seal outside of intensity and the dustproof lip of outer oil seal are damaged, cause oil sealing to lose defence to foreign matter to external world, barrier effect, cause extraneous foreign matter finally to arrive outer oil seal primary seal lip, primary seal lip is damaged, and cause seal failure.
Model utility content
The purpose of this utility model has been to propose a kind of box-type oil seal with block plate, it had both had stopping of splendid larger particles to external world and shock resistance damage capability, also effectively avoided granule foreign matter to arrive outer oil seal primary seal lip place simultaneously, improve the sealing effect of oil sealing, extended the working life of oil sealing.
The utility model is to adopt following technological scheme to realize: a kind of box-type oil seal with block plate, comprise outer oil seal and inner oil seal, inner oil seal is arranged on the annular inboard of outer oil seal, inner oil seal comprises inner oil seal skeleton and the dustproof lip of inner oil seal, the dustproof lip of inner oil seal comprises the dustproof lip in side and the dustproof lip that are positioned at outside, wherein, this box-type oil seal also comprises block plate, block plate is arranged on the outside end face of outer oil seal skeleton, make block plate and outer oil seal combination by bottom flange, the dustproof lip of inner oil seal also comprises the dustproof lip of end face that is positioned at bottom, the inner side end of the dustproof lip of inner oil seal end face and block plate is interference fit, block plate is provided with interior hole flanging, inner oil seal bottom end face and with block plate in hole flanging corresponding part be provided with inner oil seal bottom protrusion.
In the utility model, described outer oil seal comprises outer oil seal skeleton, outer oil seal primary seal lip and the outer oil seal lip that prevents dust, the annular outboard of outer oil seal primary seal lip is provided with spring, the dustproof lip of outer oil seal and inner oil seal skeleton anchor ring are transition fit, outer oil seal skeleton is convex, and the outer oil seal skeleton that is convex has skeleton with cone conformation anchor ring.
The dustproof lip of described inner oil seal end face is at least provided with one, the dustproof lip in described inner oil seal side is at least provided with one, the interior side ring surface of the dustproof lip in inner oil seal side and outer oil seal skeleton is interference fit, and the dustproof lip of inner oil seal and outer oil seal skeleton with cone conformation anchor ring are interference fit.
Described block plate is made by stamping process by cold rolled sheet, can keep out the destruction of extraneous foreign matter to oil sealing.
The beneficial effects of the utility model are:
(1), by block plate is set, guaranteed that oil sealing has stopping of splendid larger particles to external world and shock resistance damage capability;
(2) because hole flanging in block plate and axle form little Spielpassung, the bottom of inner oil seal arranges bottom protrusion simultaneously, can stop that extraneous larger foreign matter enters oil sealing inside by gap;
(3) by the dustproof lip arranging on inner oil seal and outer oil seal, at the inner mazy type dustproof construction that forms of oil sealing, can thoroughly stop that granule foreign matter arrives primary seal lip place, can guarantee the long term seal of primary seal lip, sealability and the working life of having improved oil sealing.
Accompanying drawing explanation
Fig. 1 is the half sectional view of box-type oil seal in prior art;
Fig. 2 is the half sectional view of box-type oil seal in the utility model.
In figure: 1 outer oil seal; 11 primary seal lips; The 12 outer oil seals lip that prevents dust; 13 outer oil seal skeleton with cone conformation anchor rings; 2 inner oil seals; 21 inner oil seal bottom protrusion; The 22 inner oil seal end faces lip I of preventing dust; The 23 inner oil seal end faces lip II of preventing dust; The 24 inner oil seal end faces lip III of preventing dust; The 25 inner oil seal sides lip I of preventing dust; The 26 inner oil seal sides lip II of preventing dust; The 27 inner oil seals lip that prevents dust; 3 block plates; Hole flanging in 31 block plates.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 2, this box-type oil seal comprises outer oil seal 1, inner oil seal 2 and block plate 3, inner oil seal 2 is arranged on the annular inboard of outer oil seal 1, and block plate 3 is arranged on the outside end face of outer oil seal 1 skeleton, and by flange group technology, block plate 3 and outer oil seal 1 is combined.Block plate 3 is made by stamping process by cold rolled sheet, can keep out the destruction of extraneous foreign matter to oil sealing.Interior hole flanging 31 and the rotating shaft of block plate 3 form little Spielpassung, can stop that extraneous larger foreign matter enters oil sealing inside by gap.
Outer oil seal 1 comprises outer oil seal skeleton, outer oil seal primary seal lip 11 and the outer oil seal lip 12 that prevents dust, the annular outboard of outer oil seal primary seal lip 11 is provided with spring, spring provides enclasping force for outer oil seal primary seal lip 11, thereby realizes the sealing of outer oil seal primary seal lip 11.Outer oil seal skeleton is convex, and the outer oil seal skeleton that is convex has skeleton with cone conformation anchor ring 13.Inner oil seal comprises inner oil seal skeleton and the dustproof lip of inner oil seal, the dustproof lip of inner oil seal comprise be positioned at bottom the dustproof lip of end face, be positioned at the dustproof lip in side and the dustproof lip 27 in outside, the dustproof lip of inner oil seal end face comprises end face prevent dust lip I 22, the dustproof lip II 23 of end face and the dustproof lip III 24 of end face, and the dustproof lip of above-mentioned three end faces coordinates with the inner side end formation slight interference of block plate 3.The dustproof lip in inner oil seal side comprises the dustproof lip II 26 of the dustproof lip I 25 in side and side, and the dustproof lip in above-mentioned two sides forms slight interference with the inner side anchor ring of outer oil seal skeleton and coordinates.The dustproof lip 27 of inner oil seal forms interference fit with the skeleton with cone conformation anchor ring 13 of outer oil seal.Inner oil seal bottom end face and with block plate in hole flanging 31 corresponding parts be provided with inner oil seal bottom protrusion 21, can stop that extraneous larger foreign matter enters oil sealing inside by gap.The dustproof lip 12 of outer oil seal forms transition fit with inner oil seal skeleton anchor ring.Form mazy type dustproof construction by above-mentioned seven road lips, can stop to enter granule foreign matter arrival outer oil seal primary seal lip 11 places of oil sealing inside completely.
In the utility model, the dustproof lip of described inner oil seal end face is not limited to three described in the present embodiment, also can arrange one, two or more; The dustproof lip in described inner oil seal side is also not limited to two described in the present embodiment, more dustproof lips also can be set, in a word, technician can need to decide the prevent dust number of the dustproof lip of lip, inner oil seal side and the dustproof lip of inner oil seal of inner oil seal end face according to real work.
After installing and using, in the time that axle turns round, inner oil seal 2 rotates with axle, and outer oil seal 1 and block plate 3 keep static.Because block plate 3 is positioned at inner oil seal outside and keeps static, completely cut off the inner oil seal 2 of rotation and contacting of extraneous foreign matter, thereby avoided the foreign matter that causes due to the relative movement percussion to oil sealing.Meanwhile, block plate 3 adopts cold rolled sheet to make, and can keep out the destruction of extraneous foreign matter to oil sealing.In block plate, hole flanging 31 forms little Spielpassung with axle, can stop that extraneous larger foreign matter enters oil sealing inside by gap.By the dustproof lip arranging on inner oil seal and outer oil seal, can effectively stop to enter granule foreign matter arrival outer oil seal primary seal lip 11 places of oil sealing inside.
Claims (4)
1. the box-type oil seal with block plate, comprise outer oil seal (1) and inner oil seal (2), inner oil seal (2) is arranged on the annular inboard of outer oil seal (1), inner oil seal comprises inner oil seal skeleton and the dustproof lip of inner oil seal, the dustproof lip of inner oil seal comprises the dustproof lip in side and the dustproof lip (27) that are positioned at outside, it is characterized in that: this box-type oil seal also comprises block plate (3), block plate (3) is arranged on the outside end face of outer oil seal (1) skeleton, make block plate (3) and outer oil seal (1) combination by bottom flange, the dustproof lip of inner oil seal also comprises the dustproof lip of end face that is positioned at bottom, the inner side end of the dustproof lip of inner oil seal end face and block plate (3) is interference fit, block plate (3) is provided with interior hole flanging (31), inner oil seal bottom end face and with block plate in hole flanging (31) corresponding part be provided with inner oil seal bottom protrusion (21).
2. the box-type oil seal with block plate according to claim 1, it is characterized in that: described outer oil seal (1) comprises outer oil seal skeleton, outer oil seal primary seal lip (11) and the outer oil seal lip (12) that prevents dust, the annular outboard of outer oil seal primary seal lip (11) is provided with spring, prevent dust lip (12) and inner oil seal skeleton anchor ring of outer oil seal is transition fit, outer oil seal skeleton is convex, and the outer oil seal skeleton that is convex has skeleton with cone conformation anchor ring (13).
3. the box-type oil seal with block plate according to claim 2, it is characterized in that: the dustproof lip of described inner oil seal end face is at least provided with one, the dustproof lip in described inner oil seal side is at least provided with one, the dustproof lip in inner oil seal side is interference fit with the interior side ring surface of outer oil seal skeleton, and prevent dust lip (27) and outer oil seal skeleton with cone conformation anchor ring (13) of inner oil seal is interference fit.
4. the box-type oil seal with block plate according to claim 1, is characterized in that: described block plate (3) is made by stamping process by cold rolled sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320783862.7U CN203604657U (en) | 2013-11-26 | 2013-11-26 | Box type oil seal with blocking disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320783862.7U CN203604657U (en) | 2013-11-26 | 2013-11-26 | Box type oil seal with blocking disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604657U true CN203604657U (en) | 2014-05-21 |
Family
ID=50717331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320783862.7U Expired - Fee Related CN203604657U (en) | 2013-11-26 | 2013-11-26 | Box type oil seal with blocking disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203604657U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307342A (en) * | 2019-06-26 | 2019-10-08 | 富林贝克密封件（昆山）有限公司 | A kind of oil sealing and its manufacturing method |
| CN110345253A (en) * | 2018-04-06 | 2019-10-18 | 纳博特斯克有限公司 | Sealing mechanism and the device for having the sealing mechanism |
| CN110486473A (en) * | 2019-08-06 | 2019-11-22 | 昆明学院 | A kind of novel rotary rotating shaft lip-type packing |
-
2013
- 2013-11-26 CN CN201320783862.7U patent/CN203604657U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345253A (en) * | 2018-04-06 | 2019-10-18 | 纳博特斯克有限公司 | Sealing mechanism and the device for having the sealing mechanism |
| CN110345253B (en) * | 2018-04-06 | 2023-10-13 | 纳博特斯克有限公司 | Sealing mechanism and device provided with same |
| CN110307342A (en) * | 2019-06-26 | 2019-10-08 | 富林贝克密封件（昆山）有限公司 | A kind of oil sealing and its manufacturing method |
| CN110486473A (en) * | 2019-08-06 | 2019-11-22 | 昆明学院 | A kind of novel rotary rotating shaft lip-type packing |
| CN110486473B (en) * | 2019-08-06 | 2021-03-19 | 昆明学院 | Novel rotary shaft lip-shaped sealing ring |
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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 |
Granted publication date: 20140521 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |