| 摘要 |
PURPOSE: A duct connection structure is provided to simply assemble a duct and to improve the external appearance of the duct. CONSTITUTION: A duct connection structure comprises first and second duct units of a cylinder shape(10,10') interconnected; flanges(20,20') symmetrically adhered to the periphery of connection parts of the units; and a bayonet(30) inserted between the flanges to closely fasten the first and second duct units. The bayonet is inserted and fastened in the flanges. The bayonet comprises support surfaces(30c) and a protruded connecting ring part(30b). The support surfaces are supported to connecting wall surfaces(20b) of the flanges. The connecting ring part enters a connecting protrusion(20a) and the connecting ring part is fixed in the connecting protrusion, to prevent the sides of the bayonet from being exposed to the outside.
|
