Transmission

Abstract

The invention relates to a transmission capable of realizing low cost, light weight and compaction, having a speed changing function with setting freedom degree and high variation ratio containing speed increasing ratio and a clutch function for switching the transference / truncation of the torque moment, and capable of realizing durability improvement by application of optimum clamp press force corresponding to the variation ratio. The inventive transmission has a circular plate shaped input disk installed on an input shaft; a circular plate shaped output disk installed on an output shaft; a pair of pressure rollers provided to be movable along a two-axes connecting line of the axes of the input and output shafts, within a disk overlapping area that the input and output disks overlap witheach other. The pressure roller pair is configured to sandwich the input and output disks at a position corresponding to a required transmission ratio, wherein the pressure roller pair includes a guide plate and a cam follower which regulate the acting force of the disk spring applied as the clamping press force of the two disks to obtain the optimum push clamp force corresponding to the transmission condition.

Description

technical field [0001] The present invention relates to a transmission suitable for a vehicle transmission or the like, and relates to a friction transmission mechanism that utilizes elastic deformation of a thin disc-shaped disk to contact a drive transmission portion. Background technique [0002] Conventionally, as a transmission using discs, there is known a structure called a Bayer type transmission that is provided with a friction transmission mechanism composed of a plurality of conical discs and a plurality of flanged discs (for example, refer to Patent Document 1). image 3 and Figure 4 ). [0003] The Bayer type transmission transmits the power input to the input shaft to a plurality of spline shafts through gears, and then distributes the power equally to a plurality of conical disk sets. The conical disc groups are alternately clamped between the plurality of flanged disc groups arranged in the center, and are pressed against by the crimping force of the spring...

AI Technical Summary

Problems solved by technology

However, when the driving radius of input and output changes in various ways due to the gear ratio, "necessary pressing force ≠ output torque (different gear ratio)", the end cam provided on the output side cannot respond

That is, there is a problem that when the end face cam is applied to a transmission whose input and output drive radius varies in various ways due to the speed ratio, the pressing force on the speed increasing ratio side is insufficient and the pressing force on the reducing ratio side is excessive, resulting in poor durability. sexual deterioration

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