| 摘要 |
<p>Solution Handle bar locking device of the type in which a crank shaft (32,44) for insertion and extraction a lock pin (34) and a protector block (28,38,43) having a keyhole (28a,38a,43a) are accommodated in series into an outer lock cylinder (26,42) attached to a vehicle body (2), with tumblers (31) being provided in a straight portion (32b,44a) of the crank shaft and a key insertion hole (32c,44b) formed in an end face of said straight portion, the tumblers being unlocked by inserting a key which has passed through the protector block into the key insertion hole, wherein a protector block (28) is constructed so as to be urged in a key extracting direction and movable in a key inserting direction and is provided with radially outwardly projecting engaging portions (28b,28c,...) which come into engagement with an outer lock cylinder (26) when the protector block is pushed in. Effect The overall length in the key inserting direction of the protector block (28) can be shortened and hence it is possible to construct a handle locking device in a compact shape. Further, in the case where the protector block (28) is fabricated by sintering, the green compact density in powder molding can be made more uniform because it is possible to shorten the length in the key inserting direction.</p> |
