JPH0330556U

JPH0330556U -

Info

Publication number: JPH0330556U
Application number: JP8115089U
Authority: JP
Priority date: 1989-07-12
Filing date: 1989-07-12
Publication date: 1991-03-26

Description

[Brief explanation of drawings]

第１図は本考案に係る上下のアウターリングの
断面図、第２図はピストンリングをピストンの凹
溝に嵌装した断面図、第３図はピストンリングの
凹溝内での上下の位置を示す断面図、第４図はピ
ストンの凹溝にピストンリングを嵌装した従来の
ピストン機構の断面図である。１…複合ピストンリング、２…上方アウターリ
ング、３…下方アウターリング、４…インナーリ
ング、５…外側凹溝、６…内側凹溝、７…ピスト
ン、８…外面、９…凹溝、１０…上面、１１…下
面、１２…側面、１３…シリンダー壁面、２１…
上面、２２…水平端面、２３…凸状部、２４…外
周面、２５…下面、２６…内周面、２７…下面、
２８…外周縁、３１…下面、３２…水平端面、３
３…凸状部、３４…外周面、３５…上面、３６…
内周面、３７…上面、３８…外周縁、４１…上面
、４２…下面、４３…内周縁、４４…外周縁。 Fig. 1 is a cross-sectional view of the upper and lower outer rings according to the present invention, Fig. 2 is a cross-sectional view of the piston ring fitted in the groove of the piston, and Fig. 3 shows the upper and lower positions of the piston ring in the groove of the piston. The sectional view shown in FIG. 4 is a sectional view of a conventional piston mechanism in which a piston ring is fitted into a concave groove of a piston. DESCRIPTION OF SYMBOLS 1... Composite piston ring, 2... Upper outer ring, 3... Lower outer ring, 4... Inner ring, 5... Outer groove, 6... Inner groove, 7... Piston, 8... Outer surface, 9... Concave groove, 10... Top surface, 11...Bottom surface, 12...Side surface, 13...Cylinder wall surface, 21...
Upper surface, 22... Horizontal end surface, 23... Convex portion, 24... Outer peripheral surface, 25... Lower surface, 26... Inner peripheral surface, 27... Lower surface,
28...Outer peripheral edge, 31...Bottom surface, 32...Horizontal end surface, 3
3...Convex portion, 34...Outer peripheral surface, 35...Top surface, 36...
Inner circumferential surface, 37...Top surface, 38...Outer circumferential edge, 41...Upper surface, 42...Bottom surface, 43...Inner circumferential edge, 44... Outer circumferential edge.

Claims

[Scope of utility model registration request]

An upper outer ring formed with a convex portion and a lower outer ring of approximately the same shape as the upper outer ring are formed into an H-shaped cross section so that the convex portions are brought into contact with each other and an inner groove and an outer groove are formed inside and outside the convex portion. Insert an inner ring whose width is smaller than the width of the groove into the inner groove, and insert these into the groove formed in the piston, with the outer periphery of each of the upper and lower outer rings facing the cylinder wall surface, and the inner periphery of the inner ring facing the cylinder wall. A fitting device for a piston ring of an internal combustion engine, which is inserted so that the inner ring is brought into contact with the side surfaces of the concave groove, and a gap exists between the outer peripheral edge of the inner ring and the inner peripheral surface of the convex portion.