JPS62169235U - - Google Patents
Info
- Publication number
- JPS62169235U JPS62169235U JP5682186U JP5682186U JPS62169235U JP S62169235 U JPS62169235 U JP S62169235U JP 5682186 U JP5682186 U JP 5682186U JP 5682186 U JP5682186 U JP 5682186U JP S62169235 U JPS62169235 U JP S62169235U
- Authority
- JP
- Japan
- Prior art keywords
- lock pin
- eccentric bearing
- engagement hole
- compression ratio
- engaging
- 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 6
- 238000007906 compression Methods 0.000 claims description 6
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図は本考案の第１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要部
断面図、第２図は第１図におけるロツクピン係合
孔近傍の平面図、第３図は第２図の―線に沿
う断面図、第４図は第１図の―線に沿う拡大
断面図、第５図は第１図の機構へのオイル供給系
の断面図、第６図は本考案の第２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
構の要部断面図、第７図は第６図におけるロツク
ピン係合孔近傍の平面図、第８図は第７図の―
線に沿う断面図、第９図は第６図の―線に
沿う拡大断面図、第１０図は従来の可変圧縮比機
構の断面図、第１１図は第１０図の―線
に沿う断面図、である。
１３……コネクテイングロツド、１６……偏心
ベアリング、１８……ロツクピン、１９，３５…
…ロツクピン係合孔、２０……ロツクピン案内溝
、２２……ロツクピンアンロツク用油圧通路、３
３……油溝、３４，３６……油圧通路。
Fig. 1 is a sectional view of the main part of the locking mechanism of the eccentric bearing in the variable compression ratio mechanism according to the first embodiment of the present invention, Fig. 2 is a plan view of the vicinity of the lock pin engagement hole in Fig. 1, and Fig. 3 is Fig. 4 is an enlarged sectional view taken along line - in Fig. 2, Fig. 5 is a sectional view of the oil supply system to the mechanism in Fig. 1, and Fig. 6 is an enlarged sectional view taken along line - in Fig. 1. 7 is a plan view of the vicinity of the lock pin engagement hole in FIG. 6, and FIG. 8 is a sectional view of the locking mechanism of the eccentric bearing in the variable compression ratio mechanism according to the second embodiment of the invention.
9 is an enlarged sectional view taken along line - in Fig. 6, Fig. 10 is a sectional view of a conventional variable compression ratio mechanism, and Fig. 11 is a sectional view taken along line - in Fig. 10. , is. 13... Connecting rod, 16... Eccentric bearing, 18... Lock pin, 19, 35...
... Lock pin engagement hole, 20 ... Lock pin guide groove, 22 ... Hydraulic passage for lock pin unlocking, 3
3... Oil groove, 34, 36... Hydraulic passage.
Claims (1)
回転可能に偏心ベアリングを介装して該偏心ベア
リングの回転に合せて圧縮比を可変とし、偏心ベ
アリングにロツクピン係合孔を設けるとともに、
コネクテイングロツド側にロツクピン係合孔に出
入りするロツクピンを設け、油圧によりロツクピ
ンをロツクピン係合孔に係合または離脱させ偏心
ベアリングの回転をロツクまたはアンロツクさせ
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、前記ロツクピンと前
記ロツクピン係合孔の係合部の形状を少なくとも
偏心ベアリングの回転方向については一致させ、
前記係合部に、前記ロツクピンを前記ロツクピン
係合孔から離脱させるためのオイルを導く油圧通
路を形成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, the compression ratio is made variable according to the rotation of the eccentric bearing, and a lock pin engagement hole is provided in the eccentric bearing,
An eccentric bearing in a variable compression ratio mechanism in which a lock pin that goes in and out of a lock pin engagement hole is provided on the connecting rod side, and the rotation of the eccentric bearing is locked or unlocked by engaging or disengaging the lock pin from the lock pin engagement hole using hydraulic pressure. In the locking mechanism, the shapes of the engaging portions of the lock pin and the lock pin engaging hole are made to match at least in the rotational direction of the eccentric bearing,
A locking mechanism for an eccentric bearing in a variable compression ratio mechanism, characterized in that a hydraulic passage is formed in the engaging portion to guide oil for disengaging the lock pin from the lock pin engagement hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5682186U JPS62169235U (en) | 1986-04-17 | 1986-04-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5682186U JPS62169235U (en) | 1986-04-17 | 1986-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62169235U true JPS62169235U (en) | 1987-10-27 |
Family
ID=30885978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5682186U Pending JPS62169235U (en) | 1986-04-17 | 1986-04-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62169235U (en) |
-
1986
- 1986-04-17 JP JP5682186U patent/JPS62169235U/ja active Pending