JPH0476910U - - Google Patents
Info
- Publication number
- JPH0476910U JPH0476910U JP12160390U JP12160390U JPH0476910U JP H0476910 U JPH0476910 U JP H0476910U JP 12160390 U JP12160390 U JP 12160390U JP 12160390 U JP12160390 U JP 12160390U JP H0476910 U JPH0476910 U JP H0476910U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- shaft
- hole
- spring
- rocker
- 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
- 239000011435 rock Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Description
第１図は本考案に係る可変バルブタイミング機
構の一実施例を示す組立斜視図、第２図は第１図
の矢線−に沿う断面図、第３図は第２図の矢
線−に沿う断面図、第４図は第３図の要部拡
大図、第５図は第３図のピストンの解除状態を示
す図、第６図は第５図のロツカシヤフトに対して
ロツカアームが僅かに相対回転した状態を示す図
、第７図は第２図の矢線−に沿う断面図、第
８図は第７図のピストンの斜視図、第９図は第７
図のロツカシヤフトに対してロツカアームが僅か
に相対回転した状態を示す図、第１０図は第７図
のピストンが結合した状態を示す図である。
１……可変バルブタイミング機構、２，３……
吸気弁、４，４′……ロツカシヤフト、４ａ，４
′ａ……油路、４ｂ，４′ｂ，６ｂ，７ｂ……ピ
ストン孔、４ｃ……油室、５……Ｔ型ロツカアー
ム、６……低速用ロツカアーム、７……高速用ロ
ツカアーム、８，９……ピストン、１０，１１…
…ローラベアリング、１３……カムシヤフト、１
４……低速用カム、１５……高速用カム、１６…
…ばね座、１７，２１……スプリング、１８……
蓋、２０……油室、２２……ストツパリング。
Fig. 1 is an assembled perspective view showing one embodiment of the variable valve timing mechanism according to the present invention, Fig. 2 is a sectional view taken along the arrow line - in Fig. 1, and Fig. 3 is a sectional view taken along the arrow line - in Fig. 2. 4 is an enlarged view of the main part of FIG. 3, FIG. 5 is a diagram showing the released state of the piston in FIG. 3, and FIG. 7 is a sectional view taken along the arrow line - in FIG. 2, FIG. 8 is a perspective view of the piston in FIG. 7, and FIG. 9 is a sectional view of the piston in FIG.
FIG. 10 is a diagram showing a state in which the rocker arm has rotated slightly relative to the rocker shaft shown in the figure, and FIG. 10 is a diagram showing a state in which the piston in FIG. 7 is connected. 1... Variable valve timing mechanism, 2, 3...
Intake valve, 4, 4'...Rock shaft, 4a, 4
'a... Oil passage, 4b, 4'b, 6b, 7b... Piston hole, 4c... Oil chamber, 5... T type rocker arm, 6... Low speed rocker arm, 7... High speed rocker arm, 8, 9... Piston, 10, 11...
...Roller bearing, 13...Camshaft, 1
4...Low speed cam, 15...High speed cam, 16...
...Spring seat, 17, 21...Spring, 18...
Lid, 20...oil chamber, 22...stopper ring.
Claims (1)
に嵌挿されたピストンと、一端が当該ピストンの
一端に穿設された穴に嵌挿且つその底面に圧接し
、他端がロツカアームの前記ロツカシヤフトが嵌
合する軸孔の内周面に圧接するスプリングとを備
え、前記スプリングによりピストンを押し出しそ
の先端を前記ロツカアームのピストン孔に嵌合さ
せてロツカシヤフトにロツカアームを結合し、油
圧により前記スプリングに抗して前記ピストンを
前記ロツカシヤフトのピストン孔に押し込めて前
記結合を解除する可変バルブタイミング機構にお
いて、前記スプリングと前記ロツカアームの軸孔
の内周面との間に、前記ロツカシヤフトのピスト
ン孔に嵌合し底面が前記ロツカシヤフトと略同径
の球面の一部をなして前記軸孔の内周面に当接し
、内面の略中央に前記スプリングの一端を係合す
る係合部を有するばね座を介在させたことを特徴
とする可変バルブタイミング機構。 A piston is fitted into a piston hole that penetrates through the rocker shaft in the radial direction, and the rocker shaft has one end that is fitted into a hole drilled in one end of the piston and presses against the bottom surface thereof, and the other end of which is a rocker arm. The locker arm is coupled to the locker shaft by pushing out the piston by the spring and fitting the tip of the piston into the piston hole of the locker arm, and the locker arm is connected to the locker shaft by hydraulic pressure against the spring. In the variable valve timing mechanism in which the piston is pushed into the piston hole of the rocker shaft to release the coupling, the spring is fitted into the piston hole of the rocker shaft between the spring and the inner peripheral surface of the shaft hole of the rocker arm, and the bottom surface is inserted into the piston hole of the rocker shaft. A spring seat is interposed, which forms part of a spherical surface having approximately the same diameter as the rock shaft, contacts the inner circumferential surface of the shaft hole, and has an engaging portion approximately in the center of the inner surface that engages one end of the spring. Features a variable valve timing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12160390U JPH0476910U (en) | 1990-11-20 | 1990-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12160390U JPH0476910U (en) | 1990-11-20 | 1990-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0476910U true JPH0476910U (en) | 1992-07-06 |
Family
ID=31869453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12160390U Pending JPH0476910U (en) | 1990-11-20 | 1990-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0476910U (en) |
-
1990
- 1990-11-20 JP JP12160390U patent/JPH0476910U/ja active Pending
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