| 摘要 |
PURPOSE:To obtain safety at the time of opening a suction grill in the case of removing, mounting an air filter, an air cleaning filter by so forming a shape of a sliding unit of a link as to increase a friction, and holding a fixing fitting by a lever and a snap ring. CONSTITUTION:A shape of a sliding unit 4 of a fixing fitting 3a of a link 2a at a protrusion 5 is increased to slightly brake a rotation of the link 2a. On the other hand, a crescent shape hole 8 is formed at a position on a circumference of a fulcrum with the link 2b at the fitting 3a, a shaft 9 is inserted into the hole 8, and the fitting 3a is held by the link 2a and a snap ring 10 of the shaft 9. Thus, a suction grill is free and not closed, lateral fluctuations are eliminated, and a stable switching operation is obtained. |
