CN201751558U - Sealing structure of case closing face of crankcase - Google Patents
Sealing structure of case closing face of crankcase Download PDFInfo
- Publication number
- CN201751558U CN201751558U CN2010201990684U CN201020199068U CN201751558U CN 201751558 U CN201751558 U CN 201751558U CN 2010201990684 U CN2010201990684 U CN 2010201990684U CN 201020199068 U CN201020199068 U CN 201020199068U CN 201751558 U CN201751558 U CN 201751558U
- Authority
- CN
- China
- Prior art keywords
- crankcase
- sealing
- flange
- cover
- face
- 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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Gasket Seals (AREA)
Abstract
The utility model relates to a sealing structure of a case closing face of a crankcase, which comprises a crankcase body and a crankcase cover, wherein the crankcase body is connected with the crankcase cover by using a ring flange; the end face where the crankcase cover is in contact with the crankcase body is provided with a plurality of grooves; the end faces of the crankcase cover on two sides of each groove are respectively a first sealing face and a second sealing face; a sealing gasket is arranged between the crankcase cover and the crankcase body; the sealing gasket is provided with a first flange and a second flange; the first flange corresponds to the first sealing face of the crankcase cover; and the second flange corresponds to the second sealing face of the crankcase cover. By changing the sealing structure of the case closing face of the crankcase, the sealing reliability of the sealing structure is improved by using the two sealing faces, and simultaneously the dependence of the sealing of the case closing face of the crankcase on the material is reduced.
Description
Technical field
The utility model relates to the crankcase of internal-combustion engine, is specifically related to a kind of crankcase assembling surface seal structure.
Background technique
In the Small Universal internal-combustion engine, the sealing of crankcase is most important, if crankcase seals is bad, the machine oil in the crankcase causes the machine oil loss or/and gas will be revealed, and oil gas leaks.The sealing configuration of crankcase assembling face is at present: with reference to Fig. 3 and Fig. 4, by compression installing sealing gasket 3 between crankcase body 4 and the crankcase cover 2, sealing gasket is provided with flange 7, and flange combines the formation sealing surface and seals with the sealing surface 5 of crankcase cover.Adopt structure to make crankcase body 4 and the sealing of crankcase cover 2 junction surfaces, stop machine oil or gas to exchange at crankcase inner 1 and crankcase outside, this method only depends on the sealing gasket simple seal, if itself has flaw sealing gasket, will make machine oil or gas leakage in the crankcase, therefore, the sealing means of this structure also exists to seal shortcomings such as unreliable to sealing material dependence height.
Summary of the invention
The purpose of this utility model provides a kind of crankcase assembling surface seal structure, the utility model is by changing the sealing configuration of crankcase assembling face, with two sealing surfaces, improve the reliability of its sealing, also reduced the dependence of the sealing of crankcase assembling face simultaneously to material.
The purpose of this utility model is achieved in that and comprises crankcase body and crankcase cover, described crankcase body is fixedlyed connected with flange plate with crankcase cover, the end face that described crankcase cover contacts with crankcase body is provided with some grooves, the end face of the crankcase cover of groove both sides is respectively primary sealing area and secondary sealing area, be provided with sealing gasket between crankcase cover and the crankcase body, sealing gasket has first flange and second flange, first flange is corresponding to the primary sealing area of crankcase cover, and second flange is corresponding to the secondary sealing area of crankcase cover.
Described groove is a curve bath.
The cross section of described groove is a rectangle.
The cross section of described groove is a V-arrangement.
Described first flange and second flange are reclinate arc convex.
Owing to adopt technique scheme, the end face that contacts with crankcase body at crankcase cover is provided with some grooves, end face at the crankcase cover of groove both sides forms primary sealing area and secondary sealing area, adopt two sealing surface sealings, reduced the sealing load of each sealing surface, thereby reduce dependence, improve sealing effect sealing material.Wherein first sealing surface plays main seal action near crankcase intracavity, guarantees that crankcase intracavity is hedged off from the outer world; Secondary sealing area plays the auxiliary seal effect away from crankcase intracavity, and the oil gas that leaks out from primary sealing area enters groove, oil gas through groove, its pressure, concentration all reduce greatly, and secondary sealing area will be sealed from the oil gas that primary sealing area leaks out easily, avoid oil gas to reveal effectively.
Between crankcase cover and crankcase body, be provided with sealing gasket, sealing gasket has first flange and second flange, the primary sealing area combination seal of first flange and crankcase cover, the secondary sealing area combination seal of second flange and crankcase cover, form two sealing surfaces, the enhanced leaktightness effect stops machine oil or gas to exchange with the crankcase outside in crankcase inside, fully guarantees the sealing of the sealing surface that crankcase cover combines with crankcase body.This structure has fine sealing effect, and it makes simple advantage.Because the setting at the sealing gasket flange has further increased sealability, can fully guarantee the sealing of crankcase.
Description of drawings
Fig. 1 is a schematic representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the schematic representation of existing mould assembling surface seal structure;
Fig. 4 is the B-B sectional view of Fig. 3.
In the accompanying drawing, 1 is crankcase intracavity, and 2 is crankcase cover, and 3 is sealing gasket, and 4 is crankcase body, and 5 is sealing surface, and 5a is a primary sealing area, and 5b is a secondary sealing area, and 6 is groove, and 7 is flange, and 7a is first flange, and 7b is second flange, and 8 is mounting hole.
Embodiment
With reference to Fig. 1 and Fig. 2, crankcase assembling surface seal structure, comprise crankcase body 4 and crankcase cover 2, crankcase body 4 is connected with crankcase cover 2 usefulness flange plate, surface of contact at crankcase body 4 and crankcase cover 2 forms sealing surface 5, forms the crankcase intracavity 1 that is hedged off from the outer world, and has the machine oil of lubricating component in the crankcase intracavity 1, and leakage is at the inflammable gas of crankcase intracavity in the cylinder, and machine oil and inflammable gas form mixed oil and gas.The end face that described crankcase cover 2 contacts with crankcase body 4 is provided with some grooves 6, and groove 6 is an arc, and its arc trend moves towards identical with the arc of sealing surface 5.The cross section of described groove 6 is a rectangle, and perhaps the cross section of groove is a V-arrangement, also can be the groove of other shapes certainly, can reach technique effect described in the utility model.Be provided with the mounting hole 8 that is used to be connected between groove and the groove, pass mounting hole 8, crankcase body 4 and crankcase cover 4 are connected by bolt or screw.The end face of the crankcase cover of groove 6 both sides is respectively primary sealing area 5a and secondary sealing area 5b.Be provided with sealing gasket 3 between crankcase cover and the crankcase body, sealing gasket has the first flange 7a and the second flange 7b, the described first flange 7a and the second flange 7b are sealing gasket 3 reclinate arc convex, the first flange 7a is corresponding to the primary sealing area 5a of crankcase cover, the second flange 7b forms two sealed faying faces corresponding to the secondary sealing area 5b of crankcase cover.
Groove is set in the middle of the sealing surface of crankcase cover, and the groove both sides form primary sealing area and secondary sealing area, and first sealing surface plays main seal action, and secondary sealing area plays the auxiliary seal effect.If leak from primary sealing area as a spot of oil gas, described oil gas need be introduced into groove, groove can make the pressure of the oil gas of small leakage, concentration all reduce greatly, most of oil gas that leaks can be stayed in the groove, the oil gas that less amount is leaked can be sealed by secondary sealing area, by the sealing of described two sealing surfaces, can fully guarantee the sealing of crankcase.
Claims (5)
1. crankcase assembling surface seal structure, comprise crankcase body (4) and crankcase cover (2), described crankcase body (4) is connected with flange plate with crankcase cover (2), it is characterized in that: the end face that described crankcase cover (2) contacts with crankcase body is provided with some grooves (6), the end face of the crankcase cover of groove (6) both sides is respectively primary sealing area (5a) and secondary sealing area (5b), be provided with sealing gasket (3) between crankcase cover and the crankcase body, sealing gasket (3) has first flange (7a) and second flange (7b), first flange (7a) is corresponding to the primary sealing area (5a) of crankcase cover, and second flange (7b) is corresponding to the secondary sealing area (5b) of crankcase cover.
2. crankcase assembling surface seal structure according to claim 1 is characterized in that: described groove (6) is a curve bath.
3. crankcase assembling surface seal structure according to claim 1 is characterized in that: the cross section of described groove (6) is a rectangle.
4. crankcase assembling surface seal structure according to claim 1 is characterized in that: the cross section of described groove (6) is a V-arrangement.
5. crankcase assembling surface seal structure according to claim 1 is characterized in that: described first flange (7a) and second flange (7b) are reclinate arc convex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201990684U CN201751558U (en) | 2010-05-21 | 2010-05-21 | Sealing structure of case closing face of crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201990684U CN201751558U (en) | 2010-05-21 | 2010-05-21 | Sealing structure of case closing face of crankcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201751558U true CN201751558U (en) | 2011-02-23 |
Family
ID=43601966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201990684U Expired - Fee Related CN201751558U (en) | 2010-05-21 | 2010-05-21 | Sealing structure of case closing face of crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201751558U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865049A (en) * | 2010-05-21 | 2010-10-20 | 隆鑫工业有限公司 | Crankcase assembling surface seal structure |
| CN108223185A (en) * | 2017-12-29 | 2018-06-29 | 上海齐耀动力技术有限公司 | Thermomotor crankcase and thermomotor |
-
2010
- 2010-05-21 CN CN2010201990684U patent/CN201751558U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865049A (en) * | 2010-05-21 | 2010-10-20 | 隆鑫工业有限公司 | Crankcase assembling surface seal structure |
| CN108223185A (en) * | 2017-12-29 | 2018-06-29 | 上海齐耀动力技术有限公司 | Thermomotor crankcase and thermomotor |
| CN108223185B (en) * | 2017-12-29 | 2021-11-05 | 上海齐耀动力技术有限公司 | Crankcase and stirling engine for hot-air engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110223 Termination date: 20130521 |