| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic transmission which simplifies structure and is reduced in a cost by reducing the number of parts to a limit, and functions even during low speed rotation irrespective of a positive rotation or a backlashing direction. SOLUTION: When a rotary output shaft is no-load or a low load, a slide half pulley 4 on a power output shaft positions the pulley state of a variable pulley unit in the maximum value of a minimum width pulley variable area by the strong pressurization of a strong coil spring 7. A pin situated at a slide pulley protrusion part stops in the vicinity of the apex of the triangular hole of a cam A5 for transmission. A slide half pulley on the rotary output shaft positions the pulley state of the variable pulley unit in the minimum value in a maximum width pulley area since a weak coil spring 8 to pressurize a slide half pulley is weak in pressurization in comparison of the strength of the coil spring to pressurize the slide half pulley on the power output shaft. A pin 6 situated at a slide half pulley protrusion part keeps a high speed rotation state in a state to stop in the vicinity of the apex of the triangular hole of a cam B12 for gear shift. COPYRIGHT: (C)2005,JPO&NCIPI
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