Ntn Corporation

Aichi Kikai Kogyo Kabushiki Kaisha

501 Aichi Kikai Kogyo Kabushiki Kaisha

Atsushi Asano

Kenichiro Ito

Hiromi Nojiri

Kozo Yamauchi

Tsutomu Yasue

Mitsunao Takayama

Takeshi Nakazawa

Munehisa Imai

The bidirectional differential clutch enables to transmit or cutoff both clockwise and counterwise rotation at the input side. The clutch comprises an input gear having a first cylindrical surface, an output gear having a second cylindrical surface disposed with a space to the first cylindrical surface so as to be relatively rotatable, a plurality of engaging members interposed in the space, a holding member inserted into the space, the holding member having a pocket storing the engaging members, the engaging members being for operation from a neutral position in which both cylindrical surfaces are not engaged with each other to an operational position in which both cylindrical surfaces are engaged with each other, a sub-gear producing differential velocity in correspondence to the rotation of the input gear, and the holding member being linked with the sub-gear to slide in a peripheral direction by the differential velocity to operate the engaging members to the operational position. The engaging members may be rollers or sprags.

Bidirectional differential clutch

A continuously variable transmission is provided with a driving pulley comprising a stationary half pulley fixed to a driving shaft and a movable half pulley, and a driven pulley comprising a stationary half pulley fixed to a driven shaft and a movable half pulley. A V-groove is formed between the stationary half pulley and the movable half pulley and adjustable by moving the movable half pulley in the axial direction in each of the driving pulley and the driven pulley. An endless belt is wrapped to each V-groove, and rotation of the driving shaft is transmitted to the driven shaft steplessly. A slider gear disposed in the axial direction is connected one or both half pulleys of the driving pulley, and is threadedly engaged with a slider shaft and driven by a driving source and moved forward or rearward in the axial direction on the slider shaft, so that one or both half pulleys are moved forward or rearward in the axial direction and the distance between both half pulleys is adjusted. A new combination of the control system and drive mechanism provides improved performance.

Continuously variable transmission

Growing community of inventors

Nagoya, Japan

Atsushi Asano