Air conditioner air flow control mechanism

Claim 1

In a room air conditioner front and grill assembly having sweep air deflecting structure including a tie bar adapted to be oscillated in the direction of its length and pivotally oscillatable air deflecting vanes engaged in oscillatable driven relation with said tie bar to direct air flow from said assembly in a sweeping movement when said tie bar is oscillated and air is flowing through said assembly, the improvement comprising: each of said vanes having a planar main body section provided with pivot supports and defining the leading edge portion of the vane, a drive arm attached to said main body section and to said tie bar for transferral of linear oscillating movement of said tie bar into pivotally oscillating vane movement, and a trailing edge planar air deflecting section attached to said main body section by a flexibly yieldable hinge section having a normal position maintaining said vane sections in a predetermined planar relation and resisting hinge movement from said normal position by air impingement but flexibly yielding under potentially damaging outside force application to said trailing edge planar air deflecting section to protect the vane and tie bar from damage by such outside force application, said trailing edge planar air deflecting sections being connected to said drive arms only through said flexibly yieldable hinge sections and said planar main body sections whereby all transferral of linear oscillating movements of said tie bar to said vane trailing edge planar air deflecting sections occurs through said flexibly yieldable hinge sections.