CN201475115U - Connecting bolt of engine cylinder cover - Google Patents
Connecting bolt of engine cylinder cover Download PDFInfo
- Publication number
- CN201475115U CN201475115U CN200920186152XU CN200920186152U CN201475115U CN 201475115 U CN201475115 U CN 201475115U CN 200920186152X U CN200920186152X U CN 200920186152XU CN 200920186152 U CN200920186152 U CN 200920186152U CN 201475115 U CN201475115 U CN 201475115U
- Authority
- CN
- China
- Prior art keywords
- bolt
- cylinder cover
- engine cylinder
- connecting bolt
- blind hole
- 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
Links
- 239000003921 oil Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000010705 motor oil Substances 0.000 abstract 2
- 239000010721 machine oil Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Abstract
The utility model discloses a connecting bolt of an engine cylinder cover, which is composed of a bolt head part, a bolt polished rod segment and a bolt threaded segment. The outer diameter of the bolt threaded segment is larger than the diameter of the bolt polished rod segment, and a bolt opening groove is arranged on the bolt threaded segment. When the connecting bolt is screwed up, the bolt opening groove forms a channel between a blind hole and the bolt polished rod segment. As the connecting bolt of the engine cylinder cover adopts the above structure, gas or engine oil in the threaded blind hole can be compressed in the assembling and nailing-up processes of the connecting bolt of the engine cylinder cover, and the compressed gas or the compressed engine oil can release pressure along the bolt opening groove, thereby eliminating false moment caused by an air plug or an oil column at the bottom part when the bolt is screwed up.
Description
Technical field
The utility model relates to motor car engine, relates in particular to a kind of connecting bolt of engine cylinder cover.
Background technique
The cylinder body of motor and the blind hole on the cylinder cap are many and dark, before the cylinder bolt assembling, all will smear some machine oil at the bolt thread place, prevent between bolt thread and the cylinder body screw thread dry friction to take place.If but the amount of smearing machine oil is difficult to control, has lacked then not reach and has tightened lubricated effect, and is many, can cause the gap of the bolt blind hole bottom on the cylinder body to deposit by organic oil, form the oil column of sealing, also can cause the generation of fictitious force square.In addition,, all can form vent plug between bolt blind hole on the cylinder body and the cylinder bolt, also all can cause the fictitious force square to take place no matter whether bolt smears machine oil.
The model utility content
Technical problem to be solved in the utility model provides a kind of connecting bolt of engine cylinder cover, the fictitious force square that the vent plug of bottom or oil column caused when the connecting bolt of this kind engine cylinder cover can be eliminated bolt and tightens.
Solve this technical problem, the technical solution of the utility model is: a kind of connecting bolt of engine cylinder cover, form by bolt head, bolt light rod section and bolt thread section, the external diameter of bolt thread section is greater than the diameter of bolt light rod section, described bolt thread section is provided with the bolt fluting, and described bolt is recessed between blind hole and the bolt light rod section and forms passage when connecting bolt is tightened.
Described bolt fluting is one, and its center line with connecting bolt is parallel.
The connecting bolt of a kind of engine cylinder cover of the utility model adopts such structure, the connecting bolt of engine cylinder cover is in the process that assembling is tightened, gas or machine oil in the tapped blind hole can be compressed, the gas of these compressions or machine oil can be along the bolt pressure releases of slotting, thus the vent plug of bottom or the fictitious force square that oil column causes can eliminate bolt and tighten the time.
Description of drawings
Below in conjunction with accompanying drawing the connecting bolt of a kind of engine cylinder cover of the utility model is done explanation in further detail:
Fig. 1 is the structural representation of the connecting bolt of the utility model engine cylinder cover;
Fig. 2 is an A-A sectional view shown in Figure 1;
Fig. 3 is the sectional view of connecting bolt under motor assembling situation of the utility model engine cylinder cover;
In Fig. 1, Fig. 2, Fig. 3,1, bolt head; 2, bolt light rod section; 3, bolt thread section; 4, bolt fluting; 5, pad; 6, gap; 7, cylinder head; 8, pad cylinder body; 9, cylinder; 10, blind hole.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, a kind of connecting bolt of engine cylinder cover, form by bolt head 1, bolt light rod section 2 and bolt thread section 3, the external diameter of bolt thread section 3 is greater than the diameter of bolt light rod section 2, bolt thread section 3 is provided with bolts fluting 4, and bolt fluting 4 is parallel with the center line of connecting bolt.When the connecting bolt assembling of engine cylinder cover is tightened, bolt thread section 3 puts in cylinder head 7, pad cylinder body 8 and the cylinder 9, has gap 6 between bolt light rod section 2 and the cylinder head 7, the machine oil of compressed bottom gas of blind hole 10 or pressurized can be from bolt be slotted 4 gaps 6 that flow between bolt light rod section 2 and the cylinder head 7, these gases or machine oil can leak out from the top and bottom of pad 5 at last, thereby the pressure in the blind hole 10 is laid down, reached the purpose that prevents to produce in the bolts assemblies process fictitious force square.
Claims (2)
1. the connecting bolt of an engine cylinder cover, form by bolt head (1), bolt light rod section (2) and bolt thread section (3), the external diameter of bolt thread section (3) is greater than the diameter of bolt light rod section (2), it is characterized in that: described bolt thread section (3) is provided with bolt fluting (4), and described bolt fluting (4) forms passage between blind hole (10) and bolt light rod section (2) when connecting bolt is tightened.
2. the connecting bolt of a kind of engine cylinder cover according to claim 1 is characterized in that: described bolt fluting (4) is one, and its center line with connecting bolt is parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920186152XU CN201475115U (en) | 2009-06-30 | 2009-06-30 | Connecting bolt of engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920186152XU CN201475115U (en) | 2009-06-30 | 2009-06-30 | Connecting bolt of engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475115U true CN201475115U (en) | 2010-05-19 |
Family
ID=42411362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920186152XU Expired - Fee Related CN201475115U (en) | 2009-06-30 | 2009-06-30 | Connecting bolt of engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588708A (en) * | 2012-03-15 | 2012-07-18 | 中国石油天然气集团公司 | Threaded relief double sealing structure |
| CN104948336A (en) * | 2015-05-14 | 2015-09-30 | 东风(十堰)林泓汽车配套件有限公司 | Leakage-proof type engine cylinder head water outlet cover and manufacturing process thereof |
| CN106894915A (en) * | 2017-03-24 | 2017-06-27 | 中国北方发动机研究所(天津) | A kind of variable cross-section engine body sutures bolt arrangement and its assembly technology |
-
2009
- 2009-06-30 CN CN200920186152XU patent/CN201475115U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588708A (en) * | 2012-03-15 | 2012-07-18 | 中国石油天然气集团公司 | Threaded relief double sealing structure |
| CN102588708B (en) * | 2012-03-15 | 2014-06-04 | 中国石油天然气集团公司 | Threaded relief double sealing structure |
| CN104948336A (en) * | 2015-05-14 | 2015-09-30 | 东风(十堰)林泓汽车配套件有限公司 | Leakage-proof type engine cylinder head water outlet cover and manufacturing process thereof |
| CN106894915A (en) * | 2017-03-24 | 2017-06-27 | 中国北方发动机研究所(天津) | A kind of variable cross-section engine body sutures bolt arrangement and its assembly technology |
| CN106894915B (en) * | 2017-03-24 | 2018-06-08 | 中国北方发动机研究所(天津) | A kind of variable cross-section engine body suture bolt arrangement and its assembly technology |
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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: 20100519 Termination date: 20130630 |