Rotation transmission device

Abstract

Disclosed is a rotation transmission device that controls, by an electromagnetic clutch, the engagement / disengagement of a bidirectional clutch that transmits / interrupts rotation between an input shaft and an output shaft. A spring holder (50) fitted onto the input shaft (1) prevents a pair of rollers (15) from shifting / moving in the axial direction. An engagement surface (53) that comes into surface engagement with a cam surface (14) on the outer periphery of an inner race is provided to a spring holding piece (52) provided on the spring holder (50), and serves to prevent the spring holder (50) from rotating. Thus, it is unnecessary to process the input shaft (1) to prevent the spring holder from rotating, and cost reduction can be achieved.

Description

technical field [0001] The present invention relates to a rotation transmission device capable of switching between rotation transmission and cutting. Background technique [0002] As a rotation transmission device that transmits and disconnects rotation from the input shaft to the output shaft, there is conventionally known a two-way clutch that engages and releases the input shaft and the output shaft, and controls the engagement and release of the two-way clutch by an electromagnetic clutch. device. [0003] In the rotation transmission device described in the following Patent Document 1, between the outer ring and the inner ring fitted inside the outer ring, the control cage and the rotation cage are assembled so that the column portion formed in each cage extends along the circumferential direction. Arranged alternately, a pair of opposing rollers are installed in pockets formed between adjacent column parts, and the pair of rollers are urged in a direction away from e...

AI Technical Summary

Problems solved by technology

[0009] At this time, in the above-mentioned rotation transmission device, a flat surface is formed at a position facing the outer periphery of the cylindrical holder fitting surface provided on the input shaft, and a clip formed at a position facing the inner periphery of the spring holder engages with the flat surface. The joint surface prevents the spring support from rotating. When the flat surface is formed, end milling is required, so the processing cost is high. There are still points to be improved in reducing the cost.

[0010] In addition, a snap ring groove is formed on the bracket fitting surface, and the spring bracket is positioned in the axial direction by the snap ring installed in the snap ring groove. However, due to the existence of the above-mentioned flat surface, the snap ring groove cannot be formed at the position of the flat surface. Therefore, the installation of the retaining ring is unstable. During assembly, if other parts abut against the cut end of the retaining ring, the retaining ring may shift

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