JPH0252943U

JPH0252943U -

Info

Publication number: JPH0252943U
Application number: JP13170888U
Authority: JP
Priority date: 1988-10-07
Filing date: 1988-10-07
Publication date: 1990-04-17
Anticipated expiration: 2003-10-07
Also published as: JP2522909Y2

Description

[Brief explanation of drawings]

第１図は本考案による内燃機関用スケルトン型
ピストンの第一実施例を示すスラスト方向側の側
面図、第２図は本考案による内燃機関用スケルト
ン型ピストンの第一実施例に於けるピストンピン
ボス側の側面図、第３図は本考案による内燃機関
用スケルトン型ピストンの第二実施例を示すピン
ボス側の側面図、第４図は本考案による内燃機関
用スケルトン型ピストンの第三実施例を示すスラ
スト側の側面図、第５図は同じくそれのピストン
ピンボス側の側面図、第６図は本考案による内燃
機関用スケルトン型ピストンの第四実施例を示す
スケルトン側の側面図、第７図は第６の線―
に沿う断面図、第８図は第６図及び第７図に示さ
れた本考案による内燃機関用スケルトン型ピスト
ンの第四実施例の変型例をその要部について示す
断面図、第９図は本考案による内燃機関用スケル
トン型ピストンの第五実施例を示すスラスト側の
側面図、第１０図は本考案による内燃機関用スケ
ルトン型ピストンの第六実施例を示すスラスト方
向側の側面図、第１１図は同じくそれのピストン
ピンボス側の側面図、第１２図は本考案による内
燃機関用スケルトン型ピストンの第七実施例を示
すスラスト側の側面図、第１３図は同じくそれの
ピストンピンボス側の側面図、第１４図は本考案
による内燃機関用スケルトン型ピストンの第八実
施例を示すスラスト側の側面図、第１５図は第１
４図の線―に沿う断面図、第１６図は本
考案による内燃機関用スケルトン型ピストンの第
九実施例を示すスラスト側の側面図、第１７図は
本考案による内燃機関用スケルトン型ピストンの
第十実施例を示すスラスト側の側面図、第１８図
は同じくそれのピストンピンボス側の側面図、第
１９図は同じくそれの底面図、第２０図は本考案
による内燃機関用スケルトン型ピストンの第十一
実施例を示すスラスト側の側面図、第２１図は第
２０図の線―に沿う断面図である。１０…クラウン部、１２ａ，１２ｂ…上部スカ
ート部、１４ａ，１４ｂ…下部スカート部、１６
ａ，１６ｂ…ピストンピンボス部、１８…ピスト
ンリング溝、２０…オイルリング溝、２２…ピス
トンピン孔、２４ａ，２４ｂ…スケルトン、２６
，２８…オイル案内溝、３０…突起部、３２ａ，
３２ｂ…補助スケルトン、３４，３６…オイル案
内孔、３８…オイル案内溝、４０…オイル流出孔
、４２，４４…オイル案内部、４６…オイル案内
板、５０…オイル案内パイプ、５２…オイル孔、
５４…オイル案内孔、５６…オイル案内溝。 Fig. 1 is a side view in the thrust direction showing a first embodiment of a skeleton piston for an internal combustion engine according to the invention, and Fig. 2 shows a piston pin boss in the first embodiment of the skeleton piston for an internal combustion engine according to the invention. FIG. 3 is a side view of the pin boss side showing a second embodiment of the skeleton piston for internal combustion engines according to the present invention, and FIG. 4 shows a third embodiment of the skeleton piston for internal combustion engines according to the present invention. FIG. 5 is a side view of the piston pin boss side thereof; FIG. 6 is a side view of the skeleton side showing a fourth embodiment of the skeleton piston for internal combustion engines according to the present invention; FIG. is the sixth line-
8 is a sectional view showing the main parts of a modification of the fourth embodiment of the skeleton piston for an internal combustion engine according to the present invention shown in FIGS. 6 and 7. FIG. FIG. 10 is a thrust-side side view showing a fifth embodiment of a skeleton-type piston for an internal combustion engine according to the present invention; FIG. Figure 11 is a side view of the piston pin boss side of the same, Figure 12 is a side view of the thrust side showing the seventh embodiment of the skeleton piston for an internal combustion engine according to the present invention, and Figure 13 is a side view of the piston pin boss side of the same. 14 is a side view of the thrust side showing the eighth embodiment of the skeleton piston for an internal combustion engine according to the present invention, and FIG.
4 is a sectional view taken along the line of FIG. 4, FIG. 16 is a side view on the thrust side showing the ninth embodiment of the skeleton piston for internal combustion engines according to the present invention, and FIG. 17 is a cross-sectional view of the skeleton piston for internal combustion engines according to the present invention. FIG. 18 is a side view of the piston pin boss side of the tenth embodiment, FIG. 19 is a bottom view of the same, and FIG. 20 is a skeleton piston for an internal combustion engine according to the present invention. FIG. 21 is a side view on the thrust side showing the eleventh embodiment, and is a sectional view taken along the line - in FIG. 20. 10...Crown part, 12a, 12b...Upper skirt part, 14a, 14b...Lower skirt part, 16
a, 16b... Piston pin boss portion, 18... Piston ring groove, 20... Oil ring groove, 22... Piston pin hole, 24a, 24b... Skeleton, 26
, 28... Oil guide groove, 30... Projection, 32a,
32b... Auxiliary skeleton, 34, 36... Oil guide hole, 38... Oil guide groove, 40... Oil outflow hole, 42, 44... Oil guide section, 46... Oil guide plate, 50... Oil guide pipe, 52... Oil hole,
54...Oil guide hole, 56...Oil guide groove.

Claims

[Claims for Utility Model Registration] (1) In a skeleton piston for an internal combustion engine in which a crown portion and a skirt portion are connected by a skeleton and are discontinuous when viewed from the outer circumferential surface, A skeleton-type piston for an internal combustion engine, characterized in that an oil guide portion is provided for guiding oil toward the skirt portion. (2) In a skeleton piston for an internal combustion engine in which a crown part and a skirt part are connected by a skeleton and are discontinuous when viewed from the outer peripheral surface, the outer periphery of the crown part and the outer periphery of the skirt part A skeleton-type piston for an internal combustion engine, characterized in that it has a band-shaped oil guide section that connects the piston with the oil guide section. (3) In a skeleton piston for an internal combustion engine in which a crown part and a skirt part are connected by a skeleton and are discontinuous when viewed from the outer peripheral surface, the skeleton is provided continuously with the crown part. A skeleton type for an internal combustion engine, characterized in that the skeleton is provided with an oil guide hole that guides oil from the piston pin hole of the piston pin boss portion toward the outer peripheral surface of the skirt portion. piston.