Range hood's guide plate drive coupling device and range hood

The utility model provides a range hood's guide plate drive coupling device still includes the casing and the drive mechanism of under shed, drive mechanism includes a drive shaft, actuating lever, driving lever, driven lever and transfer line, a lateral wall pin joint of drive shaft and casing, the drive end pin joint of actuating lever one end and drive shaft fixed connection, the other end and driving lever, driven end and the middle part of connecting seat pin joint, driving lever and the middle part pin joint of driven lever of driving lever, the upper end of driven lever and the one end pin joint of casing pin joint, lower extreme and transfer line, the other end and the connecting seat pin joint of transfer line. A range hood, includes the casing, collects petticoat pipe, guide plate and guide plate drive coupling device, the connecting seat is connected with the guide plate, guide plate and the cooperation of collection petticoat pipe. Because adopt such structure, bearing capacity is strong, the guide plate removes or rotates steadily, and the action is fast, life. An oil absorption cigarette is opened or closed, convenient to use that range hood, the guide plate can make things convenient for under the drive coupling device effect.