JPS596620U

JPS596620U - Engine connecting rod tightening structure

Info

Publication number: JPS596620U
Application number: JP10079782U
Authority: JP
Inventors: 若狭　章則; 児玉　恒雄; 兼坂　弘
Original assignee: マツダ株式会社
Priority date: 1982-07-03
Filing date: 1982-07-03
Publication date: 1984-01-17

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はこの考案に係る締付構造を適用したコネクティ
ングロッドの大端部を示す縦断正面図、第２図はこの考
案に適用されるコネクティングロッドボルトの斜視図、
第３図は第２図におけるＡ−Ａ線に沿った断面図、第４
図はボルト孔に対するボルトの挿入方向を示す横断平面
図、第５図はクラウン部とボルト頭部との相対関係を示
す平面図、第６図はエンジンの燃焼室内における爆発圧
力によるコネクティングロッドの変形状態を示す説明図
、第７図は従来のコネクティングロッドの要部を示す側
面図である。１・・・コネクティングロッド、２・・・クランクピン
、２５・・・大端部、６・・・クラウン部、７・・・キ
ャップ、８・・・ボルト孔、９・・・コネクティングロ
ッドボルト、１０・・・ナツト、１１．１１・・・１対
の突起。FIG. 1 is a longitudinal sectional front view showing the large end of a connecting rod to which the tightening structure according to this invention is applied, and FIG. 2 is a perspective view of a connecting rod bolt to which this invention is applied.
Figure 3 is a sectional view taken along line A-A in Figure 2;
The figure is a cross-sectional plan view showing the insertion direction of the bolt into the bolt hole, Figure 5 is a plan view showing the relative relationship between the crown part and the bolt head, and Figure 6 is the deformation of the connecting rod due to explosion pressure in the combustion chamber of the engine. An explanatory diagram showing the state, FIG. 7 is a side view showing the main parts of a conventional connecting rod. DESCRIPTION OF SYMBOLS 1... Connecting rod, 2... Crank pin, 25... Big end, 6... Crown part, 7... Cap, 8... Bolt hole, 9... Connecting rod bolt, 10... Nut, 11.11... A pair of protrusions.

Claims

[Scope of utility model registration request]

A connecting rod for an engine having a configuration in which a crown part and a cap are fastened together at the large end of the connecting rod by a connecting rod bolt inserted from the crown part side and a nut screwed onto the bolt from the cap side, and a crank pin is held between the crown part and the cap. In the structure, a pair of protrusions protruding in opposite directions are formed on the side surface of the connecting rod bolt, and the pair of protrusions are inserted into the bolt hole of the connecting rod so as to align with the axial direction of the crank pin. A connecting rod tightening structure for an engine, characterized in that the protrusion is inserted into the connecting rod, and the tip of the protrusion is pressed against the inner surface of a bolt hole of the connecting rod.