JPS6067454U - Toothed belt drive device - Google Patents

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本考案の駆動装置に使用するプーリの歯部断面
図、第２図は本考案の駆動装置に使用する歯付ベルトの
歯部断面図、第３図イは第１図に示すプーリと第２図に
示す歯付ベルトを組合せた状態図、第３図口は第３図イ
におけるプーリと歯付ベルト間のバックラッシュを示す
図、第４図は歯付ベルトとプーリの駆動中の係合状態に
おいてベルト歯部にかかる側圧分布を示す模式図、第５
図〜第７図は歯付ベルトが従動軸に取付けたプーリから
外れる時の状態図である。 Ａ・・・・・・プーリ、Ｂ・・・・・・歯付ベルト、１
・・・・・・プーリ歯部、２・・・・・・円弧、３・・
・・・・プーリ歯先、４・・・・・・歯先表面部、５・
・・・・・プーリ溝部、６，６′・・・・・・楕円、７
，７′・・・・・・長軸、１０，１０’・・・・・・短
軸、１１・・・・・・ベルト溝部、１２・・・・・・ベ
ルト歯部、１４・・・・・・円弧、１５・・・・・・ベ
ルト歯先、１７・・・・・・ベルト歯元、１８，１８’
・・・・・・楕円、ａ・・・・・・バックラッシュ、Ｈ
ｌ・・・・・・第１領域、Ｈ２・・・・・・第２領域。Figure 1 is a sectional view of the teeth of a pulley used in the drive device of the present invention, Figure 2 is a sectional view of the teeth of a toothed belt used in the drive device of the present invention, and Figure 3A is shown in Figure 1. A state diagram of the combination of the pulley and the toothed belt shown in Figure 2, Figure 3 shows the backlash between the pulley and the toothed belt in Figure 3 A, and Figure 4 shows the drive of the toothed belt and the pulley. Schematic diagram showing the lateral pressure distribution applied to the belt teeth in the middle engaged state, No. 5
Figures 7 to 7 are state diagrams when the toothed belt comes off the pulley attached to the driven shaft. A...Pulley, B...Toothed belt, 1
...Pulley teeth, 2...Circular arc, 3...
...Pulley tooth tip, 4...Tooth tip surface, 5.
...Pulley groove, 6,6'...Oval, 7
, 7'... Long axis, 10, 10'... Short axis, 11... Belt groove, 12... Belt tooth, 14... ...Circular arc, 15...Belt tooth tip, 17...Belt tooth base, 18, 18'
・・・・・・Ellipse, a・・・Backlash, H
l...first area, H2...second area.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] プーリと歯付ベルトからなり、前記プーリは断面形状に
おいて両端部の円弧とこれを連結する直線部分の表面部
からなるプーリ歯部と、２つの楕円の長軸の交差角を７
０°〜９０°とし、かつ、長軸と短軸の比をＩｌｏ、６
〜０．９とする２つの楕円弧から形成されるプーリ溝部
説から構成され、一方、歯付ベルトはベルト長手方向に
一部ピッチで歯部と溝部を交互に有し、ベルト歯部のう
ちベルト溝部表面からベルト歯部高さの６０〜９０％ま
での第１領域がベルト歯元を円弧の一部とし、残りの領
域を互いに交差する２つの楕円弧領域として構成され、
また、ベルト歯頂部に至る残りの第２領域が円弧からな
る歯付ベルトの駆動装置であり、歯付ベルトとプーリの
静的噛み合い状態においてベルト歯部とプーリ溝部間の
バックラッシュがベルト歯部の第１領域でベルト歯元か
ら増大し、また第２領域ではベルト歯先付近に至って除
々に小さくなる関係にあることを特徴とする歯付ベルト
の駆動装置。The pulley consists of a pulley and a toothed belt, and the pulley has a cross-sectional shape with a pulley tooth section consisting of a circular arc at both ends and a surface section of a straight line connecting the two ends, and an intersection angle of 7 long axes of two ellipses.
0° to 90°, and the ratio of the major axis to the minor axis is Ilo, 6
A toothed belt consists of a pulley groove formed from two elliptical arcs of ~0.9. On the other hand, a toothed belt has teeth and grooves alternately at a partial pitch in the longitudinal direction of the belt. A first region from the groove surface to 60 to 90% of the belt tooth height is configured with the belt tooth root as part of an arc, and the remaining region is configured as two elliptical arc regions that intersect with each other,
In addition, the remaining second region up to the top of the belt teeth is a drive device for a toothed belt consisting of a circular arc, and when the toothed belt and the pulley are statically engaged, the backlash between the belt teeth and the pulley groove is caused by the belt teeth. A drive device for a toothed belt, characterized in that in a first region, the belt increases from the root of the tooth, and in a second region, it gradually decreases near the tooth tip of the belt.