CN101881215A - Structure for connecting engine connecting rod and piston of automobile - Google Patents
Structure for connecting engine connecting rod and piston of automobile Download PDFInfo
- Publication number
- CN101881215A CN101881215A CN 201010209167 CN201010209167A CN101881215A CN 101881215 A CN101881215 A CN 101881215A CN 201010209167 CN201010209167 CN 201010209167 CN 201010209167 A CN201010209167 A CN 201010209167A CN 101881215 A CN101881215 A CN 101881215A
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- China
- Prior art keywords
- connecting rod
- piston
- small end
- rod small
- key seat
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- 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.)
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Abstract
The invention discloses a structure for connecting an engine connecting rod and a piston of an automobile. The structure comprises a connecting rod small end and a piston pin seat, wherein the connecting rod small end is integrated with the engine connecting rod; the piston pin seat is integrated with the piston; the connecting rod small end is matched with a space between a front end pin seat and a back end pin seat and connected with the front end pin seat and the back end pin seat through a piston pin; and the structure is characterized in that: the connecting rod small end has a wedge-shaped structure of which the upper part is narrow and the lower part is wide; and the space between the front end pin seat and the back end pin seat is a wedge-shaped space of which the upper part is narrow and the lower part is wide. The connecting rod small end has the structure that the upper part is narrow and the lower part is narrow, so that the weight of the connecting rod small end is reduced; a connecting rod small end assembly space between the front end pin seat and the back end pin seat is a wedge-shaped space, so that the area of a main stress surface is prevented from being reduced and surface pressures applied to the piston pin seat and the connecting rod small end are ensured to be within an allowable range; and the weights of the piston pin seat and the piston pin are reduced, the reciprocating inertia force of a crankshaft is reduced and the balancing performance of the crankshaft is improved.
Description
Technical field
The invention belongs to the motor car engine connecting rod, be specifically related to the linkage structure of a kind of connection rod of automobile engine and piston.
Background technique
Connection rod of automobile engine is the integral body that connnecting rod big end, connecting rod shank and connecting rod small end are formed, connnecting rod big end and engine crankshaft are connected, connecting rod small end is connected with piston by wrist pin, and the piston head pressure that the wrist pin transmission comes conducted to connecting rod shank, to drive whole connecting rod.Usually the connecting rod small end both ends of the surface of engine link become parallel structure.Adopt this kind connecting rod small end structure to need piston pin boss to use parallel structure equally, corresponding wrist pin length is longer.The connecting rod small end that adopts the both ends of the surface parallel structure is limited to reducing piston, wrist pin, connecting rod small end weight, and then it is unfavorable to reducing connecting rod reciprocal inertia force and fuel consumption rate, so the inapplicable Economy motor of the connecting rod small end of parallel structure is to the requirement of connecting rod.
Summary of the invention
The linkage structure that the purpose of this invention is to provide a kind of connection rod of automobile engine and piston, it can reduce the weight of connecting rod small end, shortens the distance of piston front and back key seat, wrist pin is shortened, alleviate piston pin boss, wrist pin weight, reduce the reciprocal inertia force of bent axle, improve the balance quality of bent axle.
The linkage structure of a kind of connection rod of automobile engine of the present invention and piston, comprise with engine link be one connecting rod small end, with piston be the piston pin boss of one, piston pin boss sub-headend key seat and rear end key seat, connecting rod small end cooperates with space between front end key seat and the rear end key seat, and be connected with the rear end key seat with the front end key seat by wrist pin, it is characterized in that: connecting rod small end is up-narrow and down-wide wedge-shaped structure, and the space between front end key seat and the rear end key seat also is up-narrow and down-wide wedge shape space.
Beneficial effect of the present invention:, thereby alleviated the weight of connecting rod small end because connecting rod small end is up-narrow and down-wide; Because forming the connecting rod small end assembly space between front end key seat and the rear end key seat is wedge shape space, the area that has guaranteed main stress face (piston pin hole upper support face, connecting rod small end hole lower support face) does not dwindle, and then has guaranteed that the face that piston pin boss and connecting rod small end bore is pressed in the allowed band; Also shorten the distance between the key seat of piston front and back, wrist pin is shortened, alleviated piston pin boss and wrist pin weight, reduced the reciprocal inertia force of bent axle, improved the balance quality of bent axle.
Description of drawings
Fig. 1 is the structural representation of connecting rod.
Fig. 2 is the C portion zoomed-in view of Fig. 1.
Fig. 3 is the structural representation of wedge plungers key seat.
Fig. 4 is the schematic representation of wedge shape connecting rod small end, wedge plungers key seat and wrist pin assembling.
Embodiment
Referring to a kind of connection rod of automobile engine illustrated in figures 1 and 2 and the linkage structure of piston, comprise with engine link 7 for the connecting rod small end 1 of one, with piston 5 be the piston pin boss of one, piston pin boss sub-headend key seat K1 and rear end key seat K2, connecting rod small end 1 cooperates with space between front end key seat K1 and the rear end key seat K2, and is connected with rear end key seat K2 with front end key seat K1 by wrist pin 6; Connecting rod small end 1 is up-narrow and down-wide by end face P1, the wedge-shaped structure that end face P2 forms, and the space between front end key seat K1 and the rear end key seat K2 also is up-narrow and down-wide wedge shape space 4.
Referring to Fig. 3, piston pin boss sub-headend key seat K1 that cooperates with the wedge shape connecting rod small end and rear end key seat K2, forming the connecting rod small end assembly space between front end key seat K1 and the rear end key seat K2 is wedge shape space 4, be that distance between front end key seat K1 and the rear end key seat K2 is narrowed to hole top gradually by connecting rod small end pilot hole aperture, D is an aperture length, and L is a piston pin hole length.
Referring to Fig. 4, because piston is under the maximum outbreak pressure effect, stress surface is pin-and-hole top A and connecting rod small end bottom B, so as long as by guaranteeing the face pressure of pin-and-hole top A B bottom connecting rod small end, just can guarantee that piston is not by conquassation.
Referring to Fig. 3, this structure is by the wedge shape space 4 between the key seat end face of front end key seat K1 and rear end key seat K2 formation, installing space for connecting rod small end, make that pin-and-hole 8 top T on the piston are elongated, connecting rod small end 1 bottom lengths on the connecting rod is that connecting rod small end pilot hole aperture length D is elongated, thus, guaranteeing main stress face (A among Fig. 4, B) under the constant situation of area, the piston pin boss length L can be shortened (referring to Fig. 3), do not press above permitted value and be not directed at piston pin hole institute bearing surface, the existence of wedge-shaped structure has simultaneously shortened the length of wrist pin 6, and before making piston, back key seat K1 and K2 also are designed to wedge shape.The weight of piston 5, wrist pin 6 and connecting rod 7 all reduces, and reaches the attenuating fuel consume, reduces the reciprocal inertia force of bent axle, improves the purpose of crankshaft counterbalance performance.
Claims (1)
1. the linkage structure of connection rod of automobile engine and piston, comprise with engine link (7) and be the connecting rod small end of one (1), with piston (5) be the piston pin boss of one, piston pin boss sub-headend key seat (K1) and rear end key seat (K2), connecting rod small end (1) cooperates with space between front end key seat (K1) and the rear end key seat (K2), and be connected with rear end key seat (K2) with front end key seat (K1) by wrist pin (6), it is characterized in that: connecting rod small end (1) is up-narrow and down-wide wedge-shaped structure, and the space between front end key seat (K1) and the rear end key seat (K2) also is up-narrow and down-wide wedge shape space (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010209167 CN101881215A (en) | 2010-06-24 | 2010-06-24 | Structure for connecting engine connecting rod and piston of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010209167 CN101881215A (en) | 2010-06-24 | 2010-06-24 | Structure for connecting engine connecting rod and piston of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101881215A true CN101881215A (en) | 2010-11-10 |
Family
ID=43053326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010209167 Pending CN101881215A (en) | 2010-06-24 | 2010-06-24 | Structure for connecting engine connecting rod and piston of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101881215A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032448A (en) * | 2012-12-21 | 2013-04-10 | 中国兵器工业集团第七0研究所 | Connecting rod of opposed piston two-stroke diesel engine |
| CN108952959A (en) * | 2018-08-16 | 2018-12-07 | 重庆卓力标准件制造有限公司 | A kind of crankshaft rod assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585983Y (en) * | 2002-08-22 | 2003-11-12 | 江苏大学 | Crank-guide of single-cylinder diesel engine |
| CN2888159Y (en) * | 2006-02-06 | 2007-04-11 | 潍柴动力股份有限公司 | Improved engine connecting rod |
| CN201705489U (en) * | 2010-03-30 | 2011-01-12 | 重庆长安汽车股份有限公司 | Piston with wedge-shaped piston pin structure |
-
2010
- 2010-06-24 CN CN 201010209167 patent/CN101881215A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585983Y (en) * | 2002-08-22 | 2003-11-12 | 江苏大学 | Crank-guide of single-cylinder diesel engine |
| CN2888159Y (en) * | 2006-02-06 | 2007-04-11 | 潍柴动力股份有限公司 | Improved engine connecting rod |
| CN201705489U (en) * | 2010-03-30 | 2011-01-12 | 重庆长安汽车股份有限公司 | Piston with wedge-shaped piston pin structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032448A (en) * | 2012-12-21 | 2013-04-10 | 中国兵器工业集团第七0研究所 | Connecting rod of opposed piston two-stroke diesel engine |
| CN108952959A (en) * | 2018-08-16 | 2018-12-07 | 重庆卓力标准件制造有限公司 | A kind of crankshaft rod assembly |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101110 |