JPS63100609U

JPS63100609U -

Info

Publication number: JPS63100609U
Application number: JP19454486U
Authority: JP
Priority date: 1986-12-19
Filing date: 1986-12-19
Publication date: 1988-06-30

Description

[Brief explanation of the drawing]

第１図は、本考案によるクランクシヤフトの一
実施例を示す側面図、第２〜７図は、それぞれ第
１図の―線、―線、―線、―線
、―線、―線による横断面図、第８図は
、第２図の―線による縦断面図、第９図は、
そのクランクシヤフトが取り付けられるエンジン
のシリンダブロツク部分の横断面図、第１０図は
、そのクランクシヤフトの作用を説明するための
模式図、第１１図は、従来のクランクシヤフトを
説明するための模式図である。１……クランクシヤフト、２，３，４，５…メ
インジヤーナル、６，６_１，６_２…クランクピン
、７，７_１，７_２…クランクピン、８，８_１，８
_２…クランクピン、１０…連通油孔、１２，１３
…油孔、１４…第１油孔、１５…開口、１６…第
２油孔、１７，１８…開口、２０…主軸受、２３
，２４…シリンダ列、２５…油溝、Ｏ…メインジ
ヤーナルの軸心。 FIG. 1 is a side view showing an embodiment of the crankshaft according to the present invention, and FIGS. 2 to 7 are cross-sectional views of FIG. The top view, Figure 8 is a vertical sectional view taken along the line - in Figure 2, and Figure 9 is a
A cross-sectional view of the cylinder block portion of the engine to which the crankshaft is attached, FIG. 10 is a schematic diagram for explaining the operation of the crankshaft, and FIG. 11 is a schematic diagram for explaining the conventional crankshaft. It is. 1... Crankshaft, 2, 3, 4, 5... Main journal, 6, 6 ₁ , 6 ₂ ... Crank pin, 7, 7 ₁ , 7 ₂ ... Crank pin, 8, 8 ₁ , 8
₂ ... Crank pin, 10... Communication oil hole, 12, 13
... Oil hole, 14... First oil hole, 15... Opening, 16... Second oil hole, 17, 18... Opening, 20... Main bearing, 23
, 24... Cylinder row, 25... Oil groove, O... Axis center of main journal.

Claims

[Scope of Claim for Utility Model Registration] A main journal rotatably supported by a main bearing having an oil groove on the inner peripheral surface only on the half circumference of the side facing each cylinder row of a V-type multi-cylinder engine; It has a crank pin provided between the main journals and to which two connecting rods are connected, an oil hole opening on the outer circumferential surface of the crank pin, and an oil hole opening on the outer circumferential surface of the main journal. A communicating oil hole is provided inside to communicate with the V.
In the crankshaft of a multi-cylinder engine,
an oil hole provided in the main journal intersects with the communicating oil hole and extends linearly through the axis of the main journal, and has one end open to the outer peripheral surface of the main journal and the other end closed. 1 oil hole, and an outer circumferential surface of the main journal with both ends intersecting the first oil hole at an obtuse angle on the closed end side of the first oil hole and extending in a straight line away from the axis of the main journal. A crankshaft for a V-type multi-cylinder engine, comprising: a second oil hole opened at the bottom;