| CPC B60R 25/02115 (2013.01) | 9 Claims |
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1. A steering column device, comprising:
a shaft support member in a cylindrical shape provided adjacent to a vehicle body;
a steering shaft rotatably provided inside the shaft support member;
a key lock collar mounted on an outer peripheral surface of the steering shaft, the outer peripheral surface facing the shaft support member, the key lock collar including a plurality of concave parts each extending in an axial direction on an outer peripheral part thereof and a plurality of convex parts formed between the concave parts along a circumferential direction; and
a lock key provided on the shaft support member and restricting rotation of the steering shaft with respect to the shaft support member by making a tip part of the lock key engage with the concave parts of the key lock collar, wherein
the key lock collar includes a key lock collar body including the plurality of concave parts and the plurality of convex parts, and a cylindrical portion provided adjacent in the axial direction to the key lock collar body,
an outer diameter of the cylindrical portion is smaller than an outer diameter of a circle including tip surfaces of the plurality of convex parts and larger than an outer diameter of a circle including outside surfaces of the plurality of concave parts, and
a rigidity of the cylindrical portion and a rigidity of the key lock collar body are substantially equal.
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