JPS62138835U

JPS62138835U -

Info

Publication number: JPS62138835U
Application number: JP2653686U
Authority: JP
Priority date: 1986-02-27
Filing date: 1986-02-27
Publication date: 1987-09-01

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の縦断正面図でピスト
ン上死点時を示し、第２図は同上実施例の要部を
示す拡大斜面図、第３図は同上実施例におけるピ
ストンピンの一部を示す拡大斜面図、第４図は同
上実施例におけるコネクテイングロツドの一部を
示す拡大斜面図、第５図は同上実施例のピストン
頂部の動きを示すグラフ、第６図は同上実施例の
ピストン下降時を示す縦断面図、第７図は従来の
通常型式のエンジン要部を示す縦断面図である。１……シリンダ、２……ピストン、２１……上
部ピストン、２２……下部ピストン、３……ピス
トンピン、３１……歯車、３２……段付き溝、４
……コネクテイングロツド、４１……爪、４２…
…コネクテイングロツド上端部、５……クランク
軸、６……クランクピン、７……スプリング、８
……カム軸、８１……歯車、９……カム。 Fig. 1 is a vertical sectional front view of the embodiment of the present invention, showing the piston at top dead center, Fig. 2 is an enlarged perspective view showing the main parts of the embodiment, and Fig. 3 is a view of the piston pin in the embodiment. FIG. 4 is an enlarged perspective view showing a part of the connecting rod in the same embodiment, FIG. 5 is a graph showing the movement of the top of the piston in the same embodiment, and FIG. FIG. 7 is a vertical cross-sectional view showing the main parts of a conventional conventional engine. 1... Cylinder, 2... Piston, 21... Upper piston, 22... Lower piston, 3... Piston pin, 31... Gear, 32... Stepped groove, 4
...Connecting rod, 41...Claw, 42...
...Top end of connecting rod, 5...Crankshaft, 6...Crank pin, 7...Spring, 8
...Camshaft, 81...Gear, 9...Cam.

Claims

[Scope of utility model registration request]

The piston body is divided into an upper piston and a lower piston, the upper piston is slidable relative to the lower piston, and the lower piston is connected to a connecting rod via a piston pin. A cam to which a gear is attached and another gear that meshes with the gear is interposed between the upper piston and the lower piston, and the cam is brought into contact with the upper piston. A piston for an engine, characterized in that the upper piston is arranged to be pushed up by the cam.