摘要:
[Problems] To provide power transmission chain manufacturing method and apparatus which can prevent a pin against damage when, by increasing a pre-tension, a more proper residual compression stress is applied to a link. [Means for Solving Problems] The manufacturing apparatus comprises a pre-tension applying apparatus 31 which includes a first pre-tension applying pulley 32 and a second pre-tension applying pulley 33 around which an endless shaped chain 1 can be wound. The mutually opposed sheave surfaces 32a and 33a of the pre-tension applying pulleys 32 and 33 are respectively formed to have a concave shape which corresponds to the convex curved portion 14a of the end face of a pin 14.
摘要:
A cushion ring (30) is provided between a transmission shaft and a transmission wheel's sleeve (10). The cushion ring (30) has a number of centripetal teeth (31), thereby forming a number of chambers (32) around the cushion ring (30). Inside each chamber (32), there is a slope section slanting (33) towards an adjacent first tooth (31), and there is a spring element (50) pressing a ball (or cylinder) (40) against the slope section (33) and the first tooth (31). The diameter of the ball or cylinder (40) is such that it stands on the slope section (33) to be slightly beyond the teeth and contacts an outside surface of the transmission shaft (60). As such, when the engine is ignited and a jitter causes the transmission shaft (60) to turn in a reversed direction, the balls and cylinders (40) are rolled towards the spring elements (50) and the rotational force is thereby absorbed by the spring elements (50).
摘要:
An isolator comprising a hub, a pulley frictionally engaged with the hub through a bushing for instantaneous rotational movement, the bushing and hub having a coefficient of friction, a resilient member engaged between the pulley and the hub for transmitting a torque, and a locking member for retaining the pulley on the hub.
摘要:
A V-belt-type continuously variable transmission (CVT) of an engine unit has a secondary sheave shaft 62, which rotates with a clutch housing 78 of a centrifugal clutch 41. The secondary sheave shaft 62 is supported in a cantilever fashion via bearings 75 and 76. The engine unit has a gear 80, which rotates with a clutch boss 77. Between the secondary sheave shaft 62 and the gear 80, bearings 81 (81a and 81 b) formed with cage-and-roller needle bearings, a type of a needle bearing, are inserted. Such an arrangement can prevent abrasions and deterioration of a bearing inserted between a rotational shaft supported in a cantilever fashion and a body of rotation while avoiding enlargement of the unit.
摘要:
Each of the grooves of a power transmission multi-groove sheave (2) incorporate critical dimensions to make it adaptable for use with any of several commercially known multi-groove sheaves and belt sets therefor, the said critical dimensions including those relating to the side wall angles of slope (s), the top and bottom widths (a, b), the normal depths (c), and the spacing (e) between width centers of adjacent grooves.
摘要:
Ein Keilriementrieb, bestehend aus einem Keilrippenriemen mit mehreren im Querschnitt annähernd gleichen, etwa V-förmigen Profilrippen, die über einen gemeinsamen Keilriemenrücken miteinander verbunden sind und zwischen denen etwa V-förmige Profilrillen vorbestimmter Profilwinkel verlaufen sowie Riemenscheiben (22), die eine entsprechende Anzahl von Scheibenrillen (24) aufweisen, wobei der Querschnitt der Scheibenrillen in Abhängigkeit vom Scheibendurchmesser dem Querschnitt der in ihnen ablaufenden Profilrillen angepaßt ist, und zwar derart, daß die Rillenwinkel (25a) der beiden axial äußeren Scheibenrillen (24a) größer sind als die Rillenwinkel (25) der axial innen benachbarten Scheibenrillen (24).