CN100585198C - General gasoline engine connection lever - Google Patents
General gasoline engine connection lever Download PDFInfo
- Publication number
- CN100585198C CN100585198C CN200710078300A CN200710078300A CN100585198C CN 100585198 C CN100585198 C CN 100585198C CN 200710078300 A CN200710078300 A CN 200710078300A CN 200710078300 A CN200710078300 A CN 200710078300A CN 100585198 C CN100585198 C CN 100585198C
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- CN
- China
- Prior art keywords
- bent axle
- hole
- connecting head
- crank
- connector
- 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 invention discloses an universal gasoline engine link rod, comprising piston connector, rod body and crank connector, where the piston connector is made with piston pin through hole, and the crank connector is equipped with crank install hole, the orifice of the install hole is located on the end surface of the crank connector and the outer side surface of the crank connector is formed with a maximum interference corner c, the distance L from the central link line m between the piston pin through hole and the crank install hole to the maximum interference corner c meets: 22.8mm<=L<30.9mm, and the included angle a between the central link line m and the end surface of the crank connector meets: 120degree<a<=154degree. And the invention effectively reduces the rotating radius of the link rod and crank in the crank box and makes the die cavity structure of the gasoline engine crank box more compact, and reasonable; the bulk and weight of the crank box are correspondingly reduced, largely saving raw materials and reducing manufacturing cost.
Description
Technical field
The invention belongs to the technology of gasoline engine field, specifically, relate to a kind of general gasoline engine connection lever.
Background technique
Connecting rod is one of important spare part in the petrol engine, and it is bearing the important function that rotatablely moves that the straight reciprocating motion of piston is converted to bent axle.The structure of existing connecting rod as shown in Figure 1, constitute by piston connecting head 1, shaft 2 and bent axle connecting head 3, on piston connecting head 1, offer the through hole 1a of piston set pin, and on bent axle connecting head 3, being provided with the mounting hole 3a of suit bent axle, the opening of this mounting hole 3a is positioned on the end face 3b of bent axle connecting head 3.During assembling the connecting rod box is abutted on the end face 3b of bent axle connecting head 3, by bolt, make mounting hole 3a and the mounting hole on the connecting rod box on the bent axle connecting head 3 surround a through hole between the two, bent axle is arranged in this through hole.Outer side surface at bent axle connecting head 3 also is formed with a maximum interference turning c, line of centres m between wrist pin installation through hole 1a and the crankshaft installed hole 3a is to the distance of maximum interference turning c, and the corner dimension between line of centres m and the bent axle connecting head 3 end face 3b will directly influence the connecting rod and the radius of gyration of bent axle in crankcase.And the line of centres m that existing connecting rod upper piston pin is installed between through hole 1a and the crankshaft installed hole 3a is generally 30.9mm to the distance L of maximum interference turning c, angle a between line of centres m and the bent axle connecting head 3 end face 3b is generally 120 °, connecting rod and the bent axle radius of gyration in crankcase is big like this, it is also big to rotate the blast that produces, make interior pressure of engine crankcase increase, when influencing engine power, also cause the waste gas mouth oil spout easily.In addition, correspondingly the overall dimensions of crankcase is also bigger, not only makes crankcase heavy, and has wasted a large amount of raw material, has increased the manufacture cost of petrol engine.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of general gasoline engine connection lever that can effectively reduce connecting rod and bent axle radius of gyration in crankcase.
Technological scheme of the present invention is as follows: a kind of general gasoline engine connection lever, comprise the piston connecting head, shaft and bent axle connecting head, on the piston connecting head, offer the through hole of piston set pin, and on the bent axle connecting head, be provided with the mounting hole of suit bent axle, the opening of this mounting hole is positioned on the end face of bent axle connecting head, and the outer side surface at the bent axle connecting head also is formed with a maximum interference turning c, its key is: described wrist pin install through hole and line of centres m between the crankshaft installed hole arrive maximum interference turning c apart from 22.8mm≤L＜30.9mm, the 120 °＜a of angle of line of centres m and bent axle connecting head end face≤154 °.
The present invention rotates to an angle the center line of bent axle connecting head around the crankshaft installed hole on the basis of background technique, the line of centres m that wrist pin is installed between through hole and the crankshaft installed hole reduces to the distance of maximum interference turning c, increased the angle of line of centres m and bent axle connecting head end face simultaneously, thereby make the radius of gyration of connecting rod reduce, connecting rod and the bent axle radius of gyration in crankcase also reduces thereupon, the overall dimensions of crankcase can correspondingly dwindle like this, crankcase is lighter, save a large amount of raw material simultaneously, effectively reduced the manufacture cost of petrol engine.
Preferably scheme is, the line of centres m between above-mentioned wrist pin installation through hole and the crankshaft installed hole is 22.8mm to the distance L of maximum interference turning c, and the angle a of line of centres m and bent axle connecting head end face is 154 °.
For the ease of processing, between above-mentioned piston connecting head, shaft and the bent axle connecting head integrative-structure by casting.
The invention has the beneficial effects as follows:
1, effectively reduced connecting rod and the bent axle radius of gyration in crankcase, made the cavity structure of gasoline engine crank case compact more, reasonable.
2, because the connecting rod and the radius of gyration of bent axle in crankcase diminish, rotate the blast that produces and diminish thereupon, make interior pressure of engine crankcase reduce, when ensureing engine power, avoided the generation of waste gas mouth fuel injection event.
3, crankcase volume is corresponding reduces, and raw material have been saved in weight saving greatly, have reduced manufacture cost.
4, have wide range of applications, all suitable to the general gasoline engines of all models.
Description of drawings
Fig. 1 is the structural representation of background technique.
Fig. 2 is the structural representation of the embodiment of the invention 1.
Fig. 3 is the structural representation of the embodiment of the invention 2.
Fig. 4 is the structural representation of the embodiment of the invention 3.
Fig. 5 is the structural representation of the embodiment of the invention 4.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment 4, as shown in Figure 5, line of centres m in the present embodiment between wrist pin installation through hole 1a and the crankshaft installed hole 3a is 22.8mm to the distance L of maximum interference turning c, the angle a of line of centres m and bent axle connecting head 3 end face 3b is 154 °, and all the other structures of present embodiment are identical with embodiment 1.
Above embodiment is only as further specifying of the present invention; protection scope of the present invention is not subjected to embodiment's restriction, as long as the line of centres m that wrist pin is installed between through hole 1a and the crankshaft installed hole 3a all falls within protection scope of the present invention to the 120 °＜a of angle apart from 22.8mm≤L＜30.9mm, line of centres m and bent axle connecting head 3 end face 3b of maximum interference turning c≤154 °.
Claims (3)
1, a kind of general gasoline engine connection lever, comprise piston connecting head (1), shaft (2) and bent axle connecting head (3), on piston connecting head (1), offer the through hole (1a) of piston set pin, and on bent axle connecting head (3), be provided with the mounting hole (3a) of suit bent axle, the opening of this mounting hole (3a) is positioned on the end face (3b) of bent axle connecting head (3), and the outer side surface at bent axle connecting head (3a) also is formed with a maximum interference turning (c), it is characterized in that: described wrist pin install between through hole (1a) and crankshaft installed hole (3a) the line of centres (m) to maximum interference turning (c) apart from 22.8mm≤L＜30.9mm, the 120 °＜a of angle of the line of centres (m) and bent axle connecting head (3) end face (3b)≤154 °.
2, a kind of general gasoline engine connection lever according to claim 1, it is characterized in that: the line of centres (m) between described wrist pin installation through hole (1a) and crankshaft installed hole (3a) is 22.8mm to the distance (L) at maximum interference turning (c), and the line of centres (m) is 154 ° with the angle (a) of bent axle connecting head (3) end face (3b).
3, a kind of general gasoline engine connection lever according to claim 1 and 2 is characterized in that: be the integrative-structure by casting between described piston connecting head (1), shaft (2) and the bent axle connecting head (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710078300A CN100585198C (en) | 2007-03-19 | 2007-03-19 | General gasoline engine connection lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710078300A CN100585198C (en) | 2007-03-19 | 2007-03-19 | General gasoline engine connection lever |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101025186A CN101025186A (en) | 2007-08-29 |
| CN100585198C true CN100585198C (en) | 2010-01-27 |
Family
ID=38743723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710078300A Expired - Fee Related CN100585198C (en) | 2007-03-19 | 2007-03-19 | General gasoline engine connection lever |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100585198C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742521A (en) * | 2013-12-25 | 2014-04-23 | 柳州正菱集团有限公司 | Connecting rod |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2425231Y (en) * | 2000-04-24 | 2001-03-28 | 南通柴油机股份有限公司 | New connecting-rod of diesel engine |
| CN2773387Y (en) * | 2005-02-05 | 2006-04-19 | 常州亚美柯机械设备有限公司 | Small link for horizontal diesel engine with single cylinder |
| CN201013727Y (en) * | 2007-03-20 | 2008-01-30 | 力帆实业(集团)有限公司 | General purpose petrol engine linkage rod |
-
2007
- 2007-03-19 CN CN200710078300A patent/CN100585198C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2425231Y (en) * | 2000-04-24 | 2001-03-28 | 南通柴油机股份有限公司 | New connecting-rod of diesel engine |
| CN2773387Y (en) * | 2005-02-05 | 2006-04-19 | 常州亚美柯机械设备有限公司 | Small link for horizontal diesel engine with single cylinder |
| CN201013727Y (en) * | 2007-03-20 | 2008-01-30 | 力帆实业(集团)有限公司 | General purpose petrol engine linkage rod |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742521A (en) * | 2013-12-25 | 2014-04-23 | 柳州正菱集团有限公司 | Connecting rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101025186A (en) | 2007-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20100127 Termination date: 20200319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |