Stepless speed changer

Abstract

The invention provides a stepless speed changer. The eccentric disc of the stepless speed changer is configured to inhibit the flexure of the first and second crankshafts which can adjust the eccentric amount. The stepless speed changer comprises a plurality of shaft neck bearing parts (22), which can support the first shaft net part (17a-17f) of the first crankshaft part (17) and the second shaft net part (18a-18f) of the second crankshaft part (18). The plurality of shaft neck bearing parts (22) is abut on the axial end surface of multiple eccentric discs (21), which are arranged on the first shaft net part (17a-17f) of the first crankshaft part (17) and the second shaft net part (18a-18f) of the second crankshaft part (18), and is capable of freely rotating relative to the axial end surface. So when a driving counter-force, which is transmitted from the connection rod (27) to the eccentric discs (21), is going to bend the first crankshaft part (17) and the second crankshaft part (18), the central shaft neck bearing part (22) inhibits the inclination of the eccentric discs (21), and thus the flexure of the first crankshaft part (17) and the second crankshaft part (18) is indirectly inhibited.

Description

technical field [0001] The present invention relates to a continuously variable transmission in which a plurality of oscillating members are reciprocated by connecting rods connected to a plurality of eccentric discs rotating eccentrically via an input shaft to reciprocate, and the reciprocating oscillations of the oscillating members are converted into output through a one-way clutch. The shaft rotates continuously, and the eccentricity of the plurality of eccentric disks is changed to change the reciprocating swing angle of the swing member, thereby steplessly increasing or decreasing the gear ratio. Background technique [0002] An example of such a continuously variable transmission is known from Patent Document 1 below. This continuously variable transmission includes a first crankshaft member and a second crankshaft member arranged parallel to each other and rotating integrally with the input shaft, and supports the first pin fitting hole and the second pin fitting hol...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned conventional continuously variable transmission, when the connecting rod connected to the eccentric disc moves in one direction to drive the swing member, the one-way clutch is engaged to transmit the driving force to the output shaft, but the driving force transmitted by the connecting rod The reaction force of the force is applied to the first and second crankshaft parts through the eccentric disc, so the first and second crankshaft parts may be deflected

If the first and second crankshaft members are deflected, the first and second pins will be inclined, so there is a problem that the first and second pins fit into the first and second pins of the eccentric disk. The friction loss of the sliding part or the friction loss of the bearing that supports the connecting rod on the eccentric disk increases

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