| 摘要 |
Invention herewith described refers to three-way folding couch hinges for couches, in Figure (1) the couches are shown, where Figure 1a represents a mechanism for manual opening the couch, (the couch is represented in a folded position and a partial view of the mechanism (8.1).Figure 1b represents the mechanism with electrical opening of the couch (the couch is represented in the folded position, with a partial view to the mechanism (8.2).Figure 1 (a-b) represents the couch as unfolded without a view to the mechanism.The couch with sliding three-way folded hinges with (the mechanism for manual opening) 1a consists of: immovable elements, and these elements are a bedclothes drawer (4), whereto fixed are sides (5) and (6) of a rear side (1) being fixed to the drawer at the bottom and the top part of which is fixed to the sides; and .Movable elements; a seat (3); a back (2); a handle (2) for pulling the couch when folding it by drawing the seat to the front, the couch from the position for sitting switches to a bed. Mechanism (8.1) and (8.2) set at the left lateral side and the right lateral side of the bedclothes drawer (4) comprising a carrier (16) along which the carrier (17) slides, the sliding hinges (18) the arm (18.5) of which is welded to the centre of the carrier, the ends (18.3) and (18.4) of which connect the centre and the back of the couch enabling folding and unfolding of the couch. Figure 2 represents the mechanism of the couch as unfolded, where the couch is drawn by a handle (7), of the back (2), the back is lifted up, and one end of the chain (14b) is fixed to a slider of the unfolding and folding mechanism (scissors) (17) at the point (20) the other end of the chain bypasses the grooved tackle (14), fixed by the holder (14a), and its free end is fixed to the upper corner of the back slab, thus it draws the back side up, the chain draws the seat backward, and the couch is folded into the position for sitting. When the seat is pulled forward the couch is unfolded in the position for sleeping. In order to keep the seat of the couch in vertical position, while below it in the bedclothes drawer (4) the bedclothes is packed or taken to the front of the hinge carrier (17) at its one end is movably fixed a shock absorber (16) and the other end of which is fixed to the frame of the seat (3).
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