JPH0377047U - - Google Patents
Info
- Publication number
- JPH0377047U JPH0377047U JP13796689U JP13796689U JPH0377047U JP H0377047 U JPH0377047 U JP H0377047U JP 13796689 U JP13796689 U JP 13796689U JP 13796689 U JP13796689 U JP 13796689U JP H0377047 U JPH0377047 U JP H0377047U
- Authority
- JP
- Japan
- Prior art keywords
- lock
- eccentric bearing
- pin
- lock pin
- lock hole
- 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
- 239000003921 oil Substances 0.000 claims 5
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000010705 motor oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Transmission Devices (AREA)
Description
第1図は本考案を採用したエンジンの一実施例
を示す部分縦断面図であり、第2図は第1図中A
−A断面図である。第3図は偏心ベアリングの斜
視図である。第4図a,b,cと第5図a,b,
cは共に実施例における作動を示す説明図である
。
図中、1……クランクシヤフト、2……クラン
クジヤーナル、3……クランクピン、8……メイ
ンギヤラリ、9,10……油穴、11……油通路
、12……偏心ベアリング、13……コンロツド
、14……大端部、15……コンロツドキヤツプ
、18……第1ロツク穴、19……第2ロツクピ
ン、20……ピン穴、21……第1ロツクピン、
22……リターンスプリング、23……第2ロツ
ク穴、24……作動ピン、25……リターンスプ
リング、26……貫通穴、27……第1サイドピ
ン、28……第2サイドピン、29……中間スプ
リングである。
FIG. 1 is a partial vertical sectional view showing an embodiment of an engine adopting the present invention, and FIG.
-A sectional view. FIG. 3 is a perspective view of the eccentric bearing. Figure 4 a, b, c and Figure 5 a, b,
FIG. 3c is an explanatory diagram showing the operation in the embodiment. In the figure, 1... Crankshaft, 2... Crank journal, 3... Crank pin, 8... Main gear lary, 9, 10... Oil hole, 11... Oil passage, 12... Eccentric bearing, 13... Conn rod, 14... Big end, 15... Conn rod cap, 18... First lock hole, 19... Second lock pin, 20... Pin hole, 21... First lock pin,
22... Return spring, 23... Second lock hole, 24... Operating pin, 25... Return spring, 26... Through hole, 27... First side pin, 28... Second side pin, 29... ...It is an intermediate spring.
Claims (1)
ンクピンとの間に介装され、前記大端部に嵌合す
る外径側と前記クランクピンに嵌合する内径側と
が互いに偏心した偏心ベアリングと、 前記大端部に内蔵され、付勢手段により付勢さ
れることにより前記偏心ベアリングに形成された
第1ロツク穴に嵌合してコンロツドと偏心ベアリ
ングとを一体化する一方、偏心ベアリング側から
の入力によつてフルストロークした場合に当該大
端部の内面と面一となる第1ロツクピンと、 前記クランクピン内に形成され、メインギヤラ
リからのエンジン油圧を前記偏心ベアリングに供
給する油通路と、 前記偏心ベアリングの第1ロツク穴に内蔵され
、前記油通路からの第1設定油圧では前記第1ロ
ツクピンの当該第1ロツク穴への侵入を許す一方
、第2設定油圧により前記第1ロツクピンを押圧
して第1ロツク穴との前記嵌合を解くと共に前記
大端部の第1ロツクピンの対極側に形成された第
2ロツク穴に嵌合してコンロツドと偏心ベアリン
グとを一体化する第2ロツクピンと、 前記第2ロツク穴に内蔵され、前記第2設定油
圧では前記第2ロツクピンの第2ロツク穴への侵
入を許す一方、第1設定油圧によつては付勢手段
の不勢力により前記第2ロツクピンを押圧して第
2ロツク穴との前記嵌合を解くと共に前記大端部
の内面と面一となる作動ピンと 前記偏心ベアリングの側面に形成され、前記第
2ロツクピンの先端がクランクピンと面一となつ
た際に、当該第2ロツクピンに駆動されて当該偏
心ベアリングを前記クランクシヤフトのクランク
ウエブに係止する偏心ベアリング係止手段と を具えたことを特徴とする可変圧縮比エンジン。[Claims for Utility Model Registration] The connecting rod is interposed between the large end of the connecting rod and the crank pin of the crankshaft, and the outer diameter side that fits into the large end and the inner diameter side that fits into the crank pin are mutually connected. an eccentric bearing built in the large end portion and fitted into a first lock hole formed in the eccentric bearing by being biased by a biasing means to integrate the connecting rod and the eccentric bearing; , a first lock pin that becomes flush with the inner surface of the large end when a full stroke is made by input from the eccentric bearing side; and a first lock pin formed within the crank pin to direct engine oil pressure from the main gear rally to the eccentric bearing. It is built in an oil passage for supplying the oil and a first lock hole of the eccentric bearing, and a first set oil pressure from the oil passage allows the first lock pin to enter the first lock hole, while a second set oil pressure allows the first lock pin to enter the first lock hole. The first lock pin is pressed to release the fitting with the first lock hole, and the large end is fitted into a second lock hole formed on the opposite side of the first lock pin to connect the connecting rod and the eccentric bearing. a second lock pin integrated into the second lock hole; and a second lock pin built in the second lock hole, which allows the second lock pin to enter the second lock hole at the second hydraulic pressure setting, while biasing the second lock pin at the first hydraulic pressure setting. an operating pin formed on a side surface of the eccentric bearing, which presses the second lock pin to release the fitting with the second lock hole and is flush with the inner surface of the large end; and eccentric bearing locking means that is driven by the second lock pin to lock the eccentric bearing to the crank web of the crankshaft when the tip of the eccentric bearing is flush with the crank pin. compression ratio engine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13796689U JPH0377047U (en) | 1989-11-30 | 1989-11-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13796689U JPH0377047U (en) | 1989-11-30 | 1989-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0377047U true JPH0377047U (en) | 1991-08-01 |
Family
ID=31685096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13796689U Pending JPH0377047U (en) | 1989-11-30 | 1989-11-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0377047U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010174928A (en) * | 2009-01-27 | 2010-08-12 | Toyota Motor Corp | Bearing structure of internal combustion engine |
JP2015124639A (en) * | 2013-12-25 | 2015-07-06 | 三菱自動車工業株式会社 | Variable compression ratio device for internal combustion engine |
-
1989
- 1989-11-30 JP JP13796689U patent/JPH0377047U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010174928A (en) * | 2009-01-27 | 2010-08-12 | Toyota Motor Corp | Bearing structure of internal combustion engine |
JP2015124639A (en) * | 2013-12-25 | 2015-07-06 | 三菱自動車工業株式会社 | Variable compression ratio device for internal combustion engine |