Rotation transmission device

Abstract

Provided is a rotation transmission device such that the leakage of magnetism from an armature to a control retainer can be suppressed and a two-way clutch can be made to function precisely and reliably. The rotation transmission device is provided with a restriction means (60) for restricting the amount of relative fitting between a cylindrical part (24) and a connecting part (54) of an armature (51) in a state in which a gap is formed between the end face of the cylindrical part (24) and the back surface of the armature (51) relative to the attraction surface, the attraction surface being the surface of the armature (51) that is attracted by a rotor (52). Thus, when the armature is attracted by energization of an electromagnet (53), the leakage of magnetism from the back surface of the armature (51) to the end face of the cylinder part (24) is suppressed.

Description

technical field [0001] The present invention relates to a rotation transmission device for switching between rotation transmission and cutoff. Background technique [0002] As a rotation transmission device that transmits and cuts rotation from a drive shaft to a driven shaft, a device having a two-way clutch and controlling engagement and disengagement of the two-way clutch by an electromagnetic clutch is conventionally known. [0003] The following Patent Document 1 describes a rotation transmission device that controls the engagement and release of a two-way clutch by an electromagnetic clutch. In the above-mentioned two-way clutch, a control cage and a rotation cage are connected between an outer ring and an inner ring assembled inside it. The pillars formed on each cage are assembled in such a way that they are arranged alternately in the circumferential direction, a pair of opposing rollers are assembled into the recesses formed between the adjacent pillars, and the el...

AI Technical Summary

Problems solved by technology

In this case, if the armature does not attract, there will be a problem. Therefore, it is necessary to install a large-scale electromagnet with a large capacity or increase the input voltage to reduce the design freedom of this part. There is still room for improving the design freedom. Aspects that can be improved

[0009] In addition, the bearing is brought into contact with the axial end surface of the rotor fitting shaft portion formed on the input shaft, so that the input shaft is rotatably supported with respect to the electromagnet and the axial position of the electromagnet is restricted. On the other hand, the rotor It abuts against the flange provided on the input shaft to limit the axial position of the rotor, and manages the axial gap formed between the rotor and the opposing part of the electromagnet. The management of the axial gap is indirectly managed through the input shaft, so the shaft The deviation to the gap is large, and the magnetic attraction force applied to the armature tends to be unstable

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