Patent ID: 7004544

Claim:
A backrest for armchairs comprising: a soft front body ( 1 . 1 ) and a rear frame ( 1 . 2 ) correspondingly connected to define a backrest set ( 1 ), located at an upper part of said connected soft front body ( 1 . 1 ) and said rear frame ( 1 . 2 ) is a headrest ( 3 ) which includes a respective soft front element ( 3 . 1 ) and a respective rear frame ( 3 . 2 ), wherein the soft front element ( 3 . 1 ) of the headrest ( 3 ) is adapted to be hooked in an upper notch or recess ( 11 ) of the soft front body ( 1 . 1 ) of the backrest set ( 1 ) by fastening the soft front element ( 3 . 1 ) of the headrest ( 3 ), with respect to the corresponding rear frame ( 3 . 2 ) of the headrest ( 3 ), by means of retention hooking at the upper part and a lower screwed fastening which is established through the rear frame ( 1 . 2 ) of the backrest set ( 1 ), and the soft front element ( 3 . 1 ) of the headrest ( 3 ) further comprising: a frame ( 6 ), to which a bar ( 7 ) is solidarily incorporated at its upper part and adapted to engage mating conformations ( 9 ) in an interior part of the rear frame ( 3 . 2 ) of the headrest ( 3 ), said conformations ( 9 ) being in the shape of hooks and adapted to receive said bar ( 7 ), an internally threaded bushing ( 8 ) located at a lower level of the soft front element ( 3 . 1 ) is integrally fixed to the frame ( 6 ) and is oriented toward a back of the headrest ( 3 ), and a hollow bushing ( 10 ) located in the rear frame ( 3 . 2 ) of the headrest ( 3 ), said bushing ( 10 ) being oriented inwardly and passes in the assembly through a hole in the rear frame ( 1 . 2 ) of the backrest set ( 1 ), such that the bushing ( 10 ) faces the threaded bushing ( 8 ) of the soft front element ( 3 . 1 ) and is aligned for insertion of anchoring fastener ( 14 ) through said bushing ( 10 ) and said threaded bushing ( 8 ), wherein through the recess ( 11 ) of the soft front body ( 1 . 1 ) of the backrest set ( 1 ), a transversal section of a structure ( 12 ) included in the soft front body ( 1 . 1 ) passes transversely across said recess ( 11 ), and the threaded bushing ( 8 ) of the soft front element ( 3 . 1 ) remains supported in assembly disposition below and abutted against the transversal section of the structure ( 12 ), defining a vertical retention which does not allow the disconnection of the bar ( 7 ) with respect to said conformations ( 9 ) of the rear frame ( 3 . 2 ) of the headrest ( 3 ).