JPS6188047U

JPS6188047U -

Info

Publication number: JPS6188047U
Application number: JP17415684U
Authority: JP
Priority date: 1984-11-16
Filing date: 1984-11-16
Publication date: 1986-06-09

Description

[Brief explanation of the drawing]

第１図はシリンダブロツクの平面図、第２図は
第１図２−２線に沿つたクランクシヤフトの軸受
部分の縦断面図、第３図は第２図の要部拡大図で
ある。尚図面中１はシリンダブロツク、２はケース部
材、４はクランクシヤフト、４ａはジヤーナル部
、６はノツクピン、８は締付ボルト、１１はＯリ
ング、１１１は溝、１０４，２０２は軸受部、１
０６，２０４は合せ面である。 1 is a plan view of the cylinder block, FIG. 2 is a longitudinal sectional view of the bearing portion of the crankshaft taken along line 2-2 in FIG. 1, and FIG. 3 is an enlarged view of the main part of FIG. 2. In the drawing, 1 is the cylinder block, 2 is the case member, 4 is the crankshaft, 4a is the journal part, 6 is the knock pin, 8 is the tightening bolt, 11 is the O-ring, 111 is the groove, 104 and 202 are the bearing parts, 1
06,204 is a mating surface.

Claims

[Scope of Claim for Utility Model Registration] (1) A case member consisting of a crankshaft bearing cap and an oil pan integrally molded is attached to the lower side of the cylinder block with bolts, and the case member consists of the cylinder block side and the case member side. In an internal combustion engine in which a journal part of a crankshaft is supported by a bearing part, a groove is formed in the mating surface of either the cylinder block or the case member on the outside of the tightening bolt that connects both sides of the bearing part. 1. A seal structure for an internal combustion engine, characterized in that an O-ring is attached to the groove. (2) Claim 1 of the above-mentioned utility model registration, characterized in that the tightening bolt has a cylindrical dowel pin inserted therein for positioning between the cylinder block and the case member, and the O-ring is provided on the outside of the dowel pin. Seal structure for internal combustion engines as described in section.