CN201013727Y - General purpose petrol engine linkage rod - Google Patents
General purpose petrol engine linkage rod Download PDFInfo
- Publication number
- CN201013727Y CN201013727Y CNU2007201238281U CN200720123828U CN201013727Y CN 201013727 Y CN201013727 Y CN 201013727Y CN U2007201238281 U CNU2007201238281 U CN U2007201238281U CN 200720123828 U CN200720123828 U CN 200720123828U CN 201013727 Y CN201013727 Y CN 201013727Y
- Authority
- CN
- China
- Prior art keywords
- bent axle
- connecting head
- hole
- piston
- centres
- 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 - Lifetime
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a universal gasoline engine connecting bar including a piston connector. The piston connector is provided with a through hole in which a piston pin is sleeved and arranged. A bent axle connector is provided with a mounting hole in which the bent axle is sleeved and arranged. A cut of the mounting hole is arranged on the end surface of the bent axle connector and the literal surface of the bent axle connector is formed with a maximum interference turning c. The distance L from the central line m between the piston plug mounting through hole and the bent axle mounting hole to the maximum interference turning c is more than or equal to 22.8mm and less than 30.9mm. The included angle Alpha between the central line m and the end surface of the bent axle connector is more than 120 degrees and less than or equal to 154 degrees. The utility model has effectively reduces the rotating radius of the connecting bars and the bent axle in the bent axle box and make the die space structure of the bent axle box of the gasoline engine have a compacter and more reasonable. The size of the bent axle box is correspondingly reduced and the weight is lightened thus having saved the raw materials and reduced the manufacturing cost greatly.
Description
Technical field
The utility model belongs to the technology of gasoline engine field, specifically, relates 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.
The model utility content
Technical problem to be solved in the utility model 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.
The technical solution of the utility model 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 utility model 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 beneficial effects of the utility model are:
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 utility model embodiment 1 a structural representation.
Fig. 3 is the utility model embodiment 2 a structural representation.
Fig. 4 is the utility model embodiment 3 a structural representation.
Fig. 5 is the utility model embodiment 4 a structural representation.
Embodiment
The utility model is described in further detail 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 utility model; protection domain of the present utility model 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 the protection domain of the present utility model 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. 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 through hole (1a) and line of centres m between crankshaft installed hole (3a) 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 (3) end face (3b)≤154 °.
2. 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 of maximum interference turning c, and the angle a of line of centres m and bent axle connecting head (3) end face (3b) is 154 °.
3. 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 |
|---|---|---|---|
| CNU2007201238281U CN201013727Y (en) | 2007-03-20 | 2007-03-20 | General purpose petrol engine linkage rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201238281U CN201013727Y (en) | 2007-03-20 | 2007-03-20 | General purpose petrol engine linkage rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013727Y true CN201013727Y (en) | 2008-01-30 |
Family
ID=39025517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201238281U Expired - Lifetime CN201013727Y (en) | 2007-03-20 | 2007-03-20 | General purpose petrol engine linkage rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013727Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100585198C (en) * | 2007-03-19 | 2010-01-27 | 力帆实业(集团)股份有限公司 | General gasoline engine connection lever |
-
2007
- 2007-03-20 CN CNU2007201238281U patent/CN201013727Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100585198C (en) * | 2007-03-19 | 2010-01-27 | 力帆实业(集团)股份有限公司 | General gasoline engine connection lever |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIFAN INDUSTRIAL (GROUP) CO. Free format text: FORMER NAME OR ADDRESS: CHONGQING LIFAN INDUSTRY (GROUP) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Chongqing city Shapingba District zhangjiewan Bridge No. 60, zip code: 400037 Patentee after: Lifan Industry (Group) Co., Ltd. Address before: Chongqing city Shapingba District zhangjiewan Bridge No. 60, zip code: 400037 Patentee before: Lifan Industry (Group) Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070320 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |