JPS62167841U - - Google Patents
Info
- Publication number
- JPS62167841U JPS62167841U JP5476886U JP5476886U JPS62167841U JP S62167841 U JPS62167841 U JP S62167841U JP 5476886 U JP5476886 U JP 5476886U JP 5476886 U JP5476886 U JP 5476886U JP S62167841 U JPS62167841 U JP S62167841U
- Authority
- JP
- Japan
- Prior art keywords
- eccentric bearing
- connecting rod
- lock pin
- center
- compression ratio
- 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.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図は本考案の一実施例に係る可変圧縮比機
構における偏心ベアリングのロツク機構の偏心ベ
アリング近傍の断面図、第２図は第１図の機構へ
のオイル供給系の断面図、第３図は第２図と直角
方向の断面図、第４図は従来の偏心ベアリングの
ロツク機構の要部近傍の断面図、である。
１２……ピストン、１３……コネクテイングロ
ツド、１４……ピストンピン、１６……偏心ベア
リング、１７……ロツクピン収納穴、１８……ロ
ツクピン、１９……ロツクピン係合孔、２０……
ロツクピン案内溝、２１……ロツクピンロツク用
油圧通路、２２……ロツクピンアンロツク用油圧
通路、θ１……コネクテイングロツドの振れ角、
θ２……コネクテイングロツドの中心線に垂直な
線とロツクピン駆動方向とのなす角度。
FIG. 1 is a sectional view of the vicinity of the eccentric bearing of the eccentric bearing locking mechanism in a variable compression ratio mechanism according to an embodiment of the present invention, FIG. 2 is a sectional view of the oil supply system to the mechanism of FIG. 1, and FIG. This figure is a sectional view taken in a direction perpendicular to FIG. 2, and FIG. 4 is a sectional view of the vicinity of the main part of a conventional eccentric bearing locking mechanism. 12... Piston, 13... Connecting rod, 14... Piston pin, 16... Eccentric bearing, 17... Lock pin storage hole, 18... Lock pin, 19... Lock pin engagement hole, 20...
Lock pin guide groove, 21... Hydraulic passage for lock pin locking, 22... Hydraulic passage for lock pin unlocking, θ 1 ... Deflection angle of connecting rod,
θ 2 ...Angle between a line perpendicular to the center line of the connecting rod and the direction in which the lock pin is driven.
Claims (1)
偏心ベアリングを回転可能に介装し、偏心ベアリ
ングに設けたロツクピン係合孔にコネクテイング
ロツド側に設けたロツクピンを駆動して係合させ
または該係合を外すことにより偏心ベアリングの
回転をロツクしまたは該ロツクを解除するように
した可変圧縮比機構における偏心ベアリングのロ
ツク機構において、前記ロツクピンの駆動方向を
、前記偏心ベアリングの中心を通りコネクテイン
グロツドの中心線に垂直な線より下方でかつ偏心
ベアリングの回転中心に向けて設定し、前記コネ
クテイングロツドの中心線に垂直な線と前記ロツ
クピン駆動方向とのなす角度を、コネクテイング
ロツドの振れ角近傍に設定したことを特徴とする
可変圧縮比機構における偏心ベアリングのロツク
機構。 An eccentric bearing is rotatably interposed between the piston pin and the connecting rod, and a lock pin provided on the connecting rod side is driven to engage or engage with a lock pin engagement hole provided in the eccentric bearing. In a locking mechanism for an eccentric bearing in a variable compression ratio mechanism, the rotation of the eccentric bearing is locked or unlocked by removing the eccentric bearing, and the driving direction of the lock pin is directed through the center of the eccentric bearing to the connecting rod. The angle between the line perpendicular to the center line of the connecting rod and the driving direction of the lock pin is set below the line perpendicular to the center line of the connecting rod and toward the center of rotation of the eccentric bearing. A locking mechanism for an eccentric bearing in a variable compression ratio mechanism, which is characterized by being set near the deflection angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5476886U JPS62167841U (en) | 1986-04-14 | 1986-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5476886U JPS62167841U (en) | 1986-04-14 | 1986-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62167841U true JPS62167841U (en) | 1987-10-24 |
Family
ID=30882063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5476886U Pending JPS62167841U (en) | 1986-04-14 | 1986-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62167841U (en) |
-
1986
- 1986-04-14 JP JP5476886U patent/JPS62167841U/ja active Pending
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