| 摘要 |
<p>PURPOSE:To prevent casual opening of an upper unit at the time of transportation, etc., and to enable opening of an upper unit without making a special operation when desired by regulating and permitting turning of a hook cooperatively with opening and closing operations of a front cover. CONSTITUTION:The upper unit which can be opened and closed by turning is provided with a hook 8 and the lower unit with an engaging member 9 to be engaged with this hook 8, respectively. A locking pin 16b of a locking member 16 is introduced into the engaging hole 8b of the hook 8 cooperatively with the closing operation of the front cover and the locking pin 16b is disengaged from the engaging hole 8b of the hook 8 cooperatively with the opening operation of the front cover.</p> |
