JPH01130002U - - Google Patents
Info
- Publication number
- JPH01130002U JPH01130002U JP2447988U JP2447988U JPH01130002U JP H01130002 U JPH01130002 U JP H01130002U JP 2447988 U JP2447988 U JP 2447988U JP 2447988 U JP2447988 U JP 2447988U JP H01130002 U JPH01130002 U JP H01130002U
- Authority
- JP
- Japan
- Prior art keywords
- shim
- valve
- valve lifter
- top surface
- center
- 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
- 238000002485 combustion reaction Methods 0.000 claims 2
- 239000010687 lubricating oil Substances 0.000 claims 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
第１図は本考案の実施例の一部切断正面図、第
２図は同上実施例の平面図、第３図は同上実施例
におけるカム軸部分を切断して示す側面図、第４
図は同上実施例におけるシムとバルブリフタの部
分を示す拡大縦断面図、第５図は同上実施例にお
けるバルブリフタ頂面を示す拡大平面図である。
１…バルブステム、５…バルブリフタ、５ａ…
凸部、６…シリンダヘツド、７…シム、７ａ…凹
部、８…カム、９…カム軸、１０…弾性部材、１
１…クリツプ、５０…バルブリフタ頂面、５１…
渦巻き溝。
Fig. 1 is a partially cutaway front view of an embodiment of the present invention, Fig. 2 is a plan view of the same embodiment, Fig. 3 is a side view of the camshaft portion of the same embodiment cut away, and Fig. 4 is a partially cutaway front view of an embodiment of the present invention.
The figure is an enlarged vertical cross-sectional view showing the shim and valve lifter portions in the above embodiment, and FIG. 5 is an enlarged plan view showing the top surface of the valve lifter in the above embodiment. 1...Valve stem, 5...Valve lifter, 5a...
Convex portion, 6... Cylinder head, 7... Shim, 7a... Concave portion, 8... Cam, 9... Camshaft, 10... Elastic member, 1
1...Clip, 50...Valve lifter top surface, 51...
spiral groove.
Claims (1)
ツドに摺動自在に支持されたバルブリフタと、該
バルブリフタの頂面に配設された間隙調節用のシ
ムと、該シムの上面に当接し前記バルブリフタを
昇降させるカムとを具備し、前記バルブリフタの
頂面中央部に凸部を形成し、前記シムの下面中央
部には該凸部に嵌合する凹部を設け、前記カムの
回転駆動に伴い前記シムが前記バルブリフタの軸
線の周りに回転するようにし、前記バルブリフタ
の頂面と前記シムの下面との摺接面に、該摺接面
の接線方向に対して一定の角度をもつて傾斜する
渦巻状の溝を、前記摺接面の周縁から中心に向け
て、前記シムの回転により潤滑オイルが該摺接面
の周縁から中心に向つて流れる方向に形成した内
燃機関の動弁機構において、前記カムを取り付け
たカム軸外周面の、該カム外周面の基礎円部に対
応する位置に弾性部材を取付け、前記カムの基礎
円部が前記シムに対面する位置にある時前記弾性
部材が該シムの上面に常に接触するようにしたこ
とを特徴とする内燃機関の動弁機構。 A valve lifter fitted onto the upper end of the valve stem and slidably supported by the cylinder head; a shim for adjusting the gap disposed on the top surface of the valve lifter; and a shim that contacts the top surface of the shim to move the valve lifter up and down A convex portion is formed at the center of the top surface of the valve lifter, a recess that fits into the convex portion is provided at the center of the lower surface of the shim, and the shim is rotated as the cam is driven to rotate. The valve lifter rotates around the axis of the shim, and the sliding contact surface between the top surface of the valve lifter and the bottom surface of the shim is provided with a spiral shape that is inclined at a constant angle with respect to the tangential direction of the sliding contact surface. In the valve operating mechanism for an internal combustion engine, the groove is formed in a direction from the periphery of the sliding surface toward the center so that lubricating oil flows from the periphery of the sliding surface toward the center by rotation of the shim. An elastic member is attached to the outer circumferential surface of the attached camshaft at a position corresponding to the base circle of the cam outer circumferential surface, and when the base circle of the cam is in a position facing the shim, the elastic member touches the top surface of the shim. A valve mechanism for an internal combustion engine, characterized in that the valve mechanism is always in contact with the valve mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2447988U JPH01130002U (en) | 1988-02-27 | 1988-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2447988U JPH01130002U (en) | 1988-02-27 | 1988-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01130002U true JPH01130002U (en) | 1989-09-05 |
Family
ID=31244363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2447988U Pending JPH01130002U (en) | 1988-02-27 | 1988-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01130002U (en) |
-
1988
- 1988-02-27 JP JP2447988U patent/JPH01130002U/ja active Pending
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