JPH0165455U

JPH0165455U -

Info

Publication number: JPH0165455U
Application number: JP1987158180U
Authority: JP
Priority date: 1987-10-16
Filing date: 1987-10-16
Publication date: 1989-04-26

Description

[Brief explanation of the drawing]

第１図は第１実施例に係かるピストンの上部の
断面図、第２図は第１図の−線断面図、第３
図は第２実施例に係かるピストンの上部の断面図
、第４図は第３図の−線断面図、第５図及び
第７図並びに第８図は夫々ピストンの上部の断面
図、第６図は第５図の−線断面図、第９図及
び第１０図は夫々第８図の−線、−線断
面図である。尚図面中１はピストン、３はリング溝、５はピ
ストンリング、９は縦孔、１３は横孔、１５は縦
ピン、２１は横ピンである。 FIG. 1 is a sectional view of the upper part of the piston according to the first embodiment, FIG. 2 is a sectional view taken along the - line in FIG. 1, and FIG.
4 is a cross-sectional view of the upper part of the piston according to the second embodiment, FIG. 4 is a cross-sectional view taken along the line -- in FIG. 3, and FIGS. 6 is a sectional view taken along the - line in FIG. 5, and FIGS. 9 and 10 are sectional views taken along the - line and - line in FIG. 8, respectively. In the drawings, 1 is a piston, 3 is a ring groove, 5 is a piston ring, 9 is a vertical hole, 13 is a horizontal hole, 15 is a vertical pin, and 21 is a horizontal pin.

Claims

[Claim for Utility Model Registration] A piston ring is fitted into a ring groove of the piston, and a vertical pin is inserted into the piston parallel to the axis of the piston and substantially perpendicular to the ring groove, so that the pin is defined by both ends of the piston ring. In the anti-rotation structure of a piston ring in which the vertical pin faces a space in which the piston ring is press-fitted in the radial direction of the piston and in a direction substantially orthogonal to the vertical pin, the piston ring engages with a part of the vertical pin and rotates the axis of the vertical pin. A piston ring rotation prevention structure characterized by having a horizontal pin that makes directional movement impossible.