CN204299721U - A kind of valve mechanism cover hermetically-sealed construction - Google Patents
A kind of valve mechanism cover hermetically-sealed construction Download PDFInfo
- Publication number
- CN204299721U CN204299721U CN201420803083.3U CN201420803083U CN204299721U CN 204299721 U CN204299721 U CN 204299721U CN 201420803083 U CN201420803083 U CN 201420803083U CN 204299721 U CN204299721 U CN 204299721U
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- CN
- China
- Prior art keywords
- valve mechanism
- mechanism cover
- bolt
- cylinder head
- bolt block
- 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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Abstract
The utility model relates to engine structure field, relates to a kind of valve mechanism cover hermetically-sealed construction.Comprise valve mechanism cover and cylinder head, sealing gasket is provided with between valve mechanism cover and the edge of cylinder head, the position that valve mechanism cover is passed through at sealing gasket has bolt hole, and cylinder head position corresponding with it has bolt hole, is fastened by bolts between valve mechanism cover and cylinder head.Be inserted in bolt block between the bolt hole of described valve mechanism cover and bolt, bolt block is that port band flanging is cylindric.The cylinder outer ring sleeve of described bolt block has sealing rubber cover.The length of the cylinder of described bolt block is greater than the thickness at valve mechanism cover edge.Described bolt block is metal material.The utility model eliminates Leakage, improves sealing.Reduce engine vibration & noise in the running, the effective NVH performance promoting engine.
Description
Technical field
The utility model relates to engine structure field, is specifically related to a kind of valve mechanism cover hermetically-sealed construction.
Background technology
In traditional valve mechanism cover sealing system design, valve mechanism cover is only by sealing gasket, and cylinder cap forms sealing.This hermetically-sealed construction sealing property is poor, easily causes gas leak of the oil leakage, causes consumption of lubricating oil serious, affects lubrication, and only there is cylinder head cover sealing gasket one deck rubber blanket buffering, and metal and Metal Contact produce larger noise and vibration, and NVH performance has much room for improvement.
Utility model content
The purpose of this utility model is to solve the problem, and provides a kind of valve mechanism cover hermetically-sealed construction.
In order to realize the purpose of this utility model, the technical solution adopted in the utility model is:
A kind of valve mechanism cover hermetically-sealed construction, comprise valve mechanism cover and cylinder head, sealing gasket is provided with between valve mechanism cover and the edge of cylinder head, the position that valve mechanism cover is passed through at sealing gasket has bolt hole, cylinder head position corresponding with it has bolt hole, is fastened by bolts between valve mechanism cover and cylinder head.
Be inserted in bolt block between the bolt hole of described valve mechanism cover and bolt, bolt block is that port band flanging is cylindric.
The cylinder outer ring sleeve of described bolt block has sealing rubber cover.
The length of the cylinder of described bolt block is greater than the thickness at valve mechanism cover edge.
Described bolt block is metal material.
The beneficial effects of the utility model are: 1, spacing by bolt block, to guarantee the decrement of rubber, eliminate Leakage; Bolt hole passes from cylinder head cover sealing gasket, and bolt presses sealing gasket can well seal.2, by the sealing rubber cover of rubber gasket and bolt block, make valve mechanism cover be in complete floating state, discord cylinder cap carries out rigid contact, prevents the direct contact-impact of metal and metal, reduce engine vibration & noise in the running, the effective NVH performance promoting engine.
Accompanying drawing explanation
Fig. 1 is traditional valve mechanism cover sealed structural representation,
Fig. 2 is the utility model structural representation,
Fig. 3 is bolt block structural representation,
Fig. 4 gasket structure schematic diagram of the present utility model,
Fig. 5 is the A-A sectional view in Fig. 4,
In accompanying drawing 1: 21, valve mechanism cover 22, cylinder cover 23, sealing gasket.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Embodiment: see Fig. 1 to Fig. 5.
A kind of valve mechanism cover hermetically-sealed construction, comprise valve mechanism cover 1 and cylinder head 2, sealing gasket 3 is provided with between valve mechanism cover 1 and the edge of cylinder head 2, the position that valve mechanism cover 1 is passed through at sealing gasket 3 has bolt hole, cylinder head 2 position corresponding with it has bolt hole, fastening by bolt 4 between valve mechanism cover 1 and cylinder head 2.
Be inserted in bolt block 5 between the bolt hole of described valve mechanism cover 1 and bolt 4, bolt block 5 is that port band flanging is cylindric.
The cylinder outer ring sleeve of described bolt block 5 has sealing rubber cover 6.
The length of the cylinder of described bolt block 5 is greater than the thickness at valve mechanism cover edge.
Described bolt block 5 is metal material.
Specification: as shown in Figure 1, in traditional valve mechanism cover sealing system design, valve mechanism cover is only by sealing gasket, and cylinder cap forms sealing, cylinder head cover bolt and sealing gasket distant, this hermetically-sealed construction sealing property is poor, easily causes gas leak of the oil leakage; And only there is cylinder head cover sealing gasket one deck rubber blanket buffering, metal and Metal Contact produce larger noise and vibration, and NVH performance has much room for improvement.
As shown in Figure 2, this utility model comprises construction bolt, valve mechanism cover, cylinder head cover sealing gasket, bolt block and cylinder head.After construction bolt is urgent, the drum length part of bolt block plays position-limiting action, and holding, between bolt and cylinder head surface, prevents sealing rubber cover part on cylinder head cover sealing gasket and bolt block by excessive compression, occurs the situation of rubber breakage.Consider the size of valve mechanism cover installation position, the size of sealing gasket and bolt block simultaneously, ensure that the caulking gum of cylinder head cover sealing gasket and bolt block is enclosed within the compression ratio of short transverse moderate, can seal request be met, otherwise occur the situation that compression is damaged.Be provided with bolt hole in cylinder head cover sealing gasket, bolt can well seal through press seal pad.
Meanwhile, under this design point, metal valve mechanism cover and metal cylinder cap do not exist and are rigidly connected, and reduce engine noise and vibration, therefore to promoting the NVH performance of this engine, have positive effect.
Fig. 3 is the schematic diagram of bolt block, and this part is metallic framework material, overcoat caulking gum material.By strictly controlling the size of metallic framework and rubber part, accomplish the compression ratio accurately controlling rubber blanket, to guarantee sealing.
One of preferred embodiment that what embodiment of the present utility model was announced is also; but be not limited thereto; those of ordinary skill in the art; very easily according to above-described embodiment; understand spirit of the present utility model; and make different amplifications and change, but only otherwise depart from spirit of the present utility model, all in protection domain of the present utility model.
Claims (5)
1. a valve mechanism cover hermetically-sealed construction, comprise valve mechanism cover and cylinder head, it is characterized in that: between valve mechanism cover and the edge of cylinder head, be provided with sealing gasket, the position that valve mechanism cover is passed through at sealing gasket has bolt hole, cylinder head position corresponding with it has bolt hole, is fastened by bolts between valve mechanism cover and cylinder head.
2. a kind of valve mechanism cover hermetically-sealed construction according to claim 1, is characterized in that: be inserted in bolt block between the bolt hole of described valve mechanism cover and bolt, and bolt block is that port band flanging is cylindric.
3. a kind of valve mechanism cover hermetically-sealed construction according to claim 1, is characterized in that: the cylinder outer ring sleeve of described bolt block has sealing rubber cover.
4. a kind of valve mechanism cover hermetically-sealed construction according to claim 1, is characterized in that: the length of the cylinder of described bolt block is greater than the thickness at valve mechanism cover edge.
5. a kind of valve mechanism cover hermetically-sealed construction according to claim 1, is characterized in that: described bolt block is metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420803083.3U CN204299721U (en) | 2014-12-18 | 2014-12-18 | A kind of valve mechanism cover hermetically-sealed construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420803083.3U CN204299721U (en) | 2014-12-18 | 2014-12-18 | A kind of valve mechanism cover hermetically-sealed construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299721U true CN204299721U (en) | 2015-04-29 |
Family
ID=53105266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420803083.3U Expired - Fee Related CN204299721U (en) | 2014-12-18 | 2014-12-18 | A kind of valve mechanism cover hermetically-sealed construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299721U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676190A (en) * | 2017-10-31 | 2018-02-09 | 广西玉柴机器股份有限公司 | A kind of mounting structure of valve mechanism cover |
| CN110206654A (en) * | 2019-06-21 | 2019-09-06 | 浙江博弈科技股份有限公司 | A kind of vibration and noise reducing device of valve mechanism cover |
-
2014
- 2014-12-18 CN CN201420803083.3U patent/CN204299721U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676190A (en) * | 2017-10-31 | 2018-02-09 | 广西玉柴机器股份有限公司 | A kind of mounting structure of valve mechanism cover |
| CN110206654A (en) * | 2019-06-21 | 2019-09-06 | 浙江博弈科技股份有限公司 | A kind of vibration and noise reducing device of valve mechanism cover |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20201218 |