JPS61109948U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例によるエンジンのベ
ルト駆動伝達装置の正面図、第２図は同装置の原
動プーリ部分の正面図、第３図は同装置の説明す
るためのエンジンのクランク角に対する出力トル
クとベルトの張力の関係を示す特性図、第４図ａ
，ｂは同装置における原動プーリのベルト溝の実
施例を示す第２図―線断面図、第５図は本考
案の他の実施例を示す第２図相当図、第６図ａ，
ｂは第５図のＡ―Ａ線およびＢ―Ｂ線断面図であ
る。 １……エンジン、２……原動プーリ、２ａ……
低摩擦係数領域、２ｂ……溝幅小の領域、３，４
……従動プーリ、５……ベルト。 Fig. 1 is a front view of an engine belt drive transmission device according to an embodiment of the present invention, Fig. 2 is a front view of the driving pulley portion of the device, and Fig. 3 is an engine crank angle for explaining the device. Characteristic diagram showing the relationship between output torque and belt tension, Figure 4a
, b are cross-sectional views taken along the line in FIG. 2 showing an embodiment of the belt groove of the driving pulley in the same device, FIG. 5 is a view corresponding to FIG. 2 showing another embodiment of the present invention, and FIGS. 6 a,
b is a sectional view taken along line AA and line BB in FIG. 5; 1... Engine, 2... Driving pulley, 2a...
Low friction coefficient region, 2b...Small groove width region, 3, 4
...Driver pulley, 5...Belt.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] エンジンの出力軸に装着した原動プーリと補器
類を駆動する従動プーリとの間にベルトを張設し
たエンジンのベルト駆動伝達装置において、上記
原動プーリのベルト溝を周方向において部分的に
摩擦係数を異ならしめて形成するとともに、上記
エンジンの出力トルクが増大する回転角で上記ベ
ルトが当接する領域の摩擦係数を他の部分とは小
または大に設定したことを特徴とするエンジンの
ベルト駆動伝達装置。 In an engine belt drive transmission device in which a belt is stretched between a driving pulley attached to the output shaft of the engine and a driven pulley that drives auxiliary equipment, the belt groove of the driving pulley has a partial friction coefficient in the circumferential direction. A belt drive transmission device for an engine, characterized in that a friction coefficient of a region where the belt comes into contact at a rotation angle where the output torque of the engine increases is set to be smaller or larger than that of other parts. .