JPH03116712U - - Google Patents
Info
- Publication number
- JPH03116712U JPH03116712U JP2489190U JP2489190U JPH03116712U JP H03116712 U JPH03116712 U JP H03116712U JP 2489190 U JP2489190 U JP 2489190U JP 2489190 U JP2489190 U JP 2489190U JP H03116712 U JPH03116712 U JP H03116712U
- Authority
- JP
- Japan
- Prior art keywords
- rocker
- cam
- cam profile
- rocker arm
- cams
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
Description
第１図は第３図の動弁装置が適用されたシリン
ダヘツドの部分平面図、第２図は第１図の−
線に沿う断面図、第３図はこの考案に係る４サイ
クルエンジンの動弁装置の一実施例を示す斜視図
、第４図は第３図の動弁装置の平面図、第５図お
よび第６図は第３図の動弁装置の作用を示す動作
状態図、第７図は第３図のカムのカムプロフイー
ルを示す図、第８図および第９図は第７図に示す
カムプロフイールのそれぞれの変形例を示す図で
ある。１，２……バルブ、３……低速用カム、４
，５……中高速用カム、７……低速用ロツカアー
ム、７ａ……低速用ロツカアームの支持部、８，
９……中高速用ロツカアーム、１１……ロツカシ
ヤフト、１２，１３……偏心ブツシユ、２１……
シリンダヘツド、２５……シリンダヘツドの合せ
面、３０……位置決めスプリング、３１……掛止
部、３２……溝部、Ａ……低速用カムのカムプロ
フイール、Ｂ……中高速用カムのカムプロフイー
ル。
Figure 1 is a partial plan view of a cylinder head to which the valve train shown in Figure 3 is applied, and Figure 2 is a partial plan view of the cylinder head shown in Figure 1.
3 is a perspective view showing an embodiment of the valve train for a four-stroke engine according to the invention, FIG. 4 is a plan view of the valve train in FIG. 3, and FIGS. Fig. 6 is an operating state diagram showing the action of the valve train shown in Fig. 3, Fig. 7 is a drawing showing the cam profile of the cam shown in Fig. 3, and Figs. 8 and 9 are diagrams showing the cam profile of the cam shown in Fig. 7. It is a figure which shows each modification. 1, 2...Valve, 3...Low speed cam, 4
, 5... Cam for medium and high speeds, 7... Rocker arm for low speeds, 7a... Support part of rocker arm for low speeds, 8,
9...Mid-high speed rocker arm, 11...Rocker shaft, 12, 13...Eccentric bush, 21...
Cylinder head, 25...Cylinder head mating surface, 30...Positioning spring, 31...Latching part, 32...Groove part, A...Cam profile of low speed cam, B...Cam profile of medium and high speed cam .
Claims (1)
ク大径部が形成されたロツカシヤフトと、このロ
ツカシヤフトに直接嵌挿された第１のロツカアー
ムと、この第１のロツカアームの両側に配置され
て上記エキセントリツク大径部に嵌挿された第２
および第３のロツカアームと、上記第１、第２お
よび第３のロツカアームをそれぞれ駆動する第１
、第２および第３のカムと、を有し、上記第２お
よび第３のカムが同じカムプロフイールに形成さ
れ、上記第１のカムのカムプロフイールが上記カ
ムプロフイールと異なつて形成され、また、上記
第２および第３のロツカアームの少なくとも一方
のロツカアームの支持部には、その上半部分に掛
止部が形成されたことを特徴とする４サイクルエ
ンジンの動弁装置。 a rocker shaft rotatably supported and formed with an eccentric large diameter portion; a first rocker arm directly fitted into the rocker shaft; The second part inserted into the
and a third rocker arm, and a first rocker arm that drives the first, second, and third rocker arms, respectively.
, second and third cams, the second and third cams are formed with the same cam profile, the cam profile of the first cam is formed differently from the cam profile, and A valve train for a four-cycle engine, wherein a locking portion is formed in an upper half of a supporting portion of at least one of the second and third rocker arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990024891U JPH0755284Y2 (en) | 1990-03-14 | 1990-03-14 | 4-cycle engine valve drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990024891U JPH0755284Y2 (en) | 1990-03-14 | 1990-03-14 | 4-cycle engine valve drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03116712U true JPH03116712U (en) | 1991-12-03 |
| JPH0755284Y2 JPH0755284Y2 (en) | 1995-12-20 |
Family
ID=31527837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990024891U Expired - Fee Related JPH0755284Y2 (en) | 1990-03-14 | 1990-03-14 | 4-cycle engine valve drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0755284Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514416A (en) * | 1974-06-29 | 1976-01-14 | Toyota Motor Co Ltd | Nainenkikanniokeru kyukikyokyuhoho oyobi kozo |
| JPH01285613A (en) * | 1988-05-13 | 1989-11-16 | Honda Motor Co Ltd | Valve system for internal combustion engine |
-
1990
- 1990-03-14 JP JP1990024891U patent/JPH0755284Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514416A (en) * | 1974-06-29 | 1976-01-14 | Toyota Motor Co Ltd | Nainenkikanniokeru kyukikyokyuhoho oyobi kozo |
| JPH01285613A (en) * | 1988-05-13 | 1989-11-16 | Honda Motor Co Ltd | Valve system for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0755284Y2 (en) | 1995-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |