Adjustable hinge door spring - has welded hexagonal plate for torque application with spanner for setting force exerted by spring

摘要

The door spring comprises two cylindrical pressings (15, 16) with flanges (17, 18) fixed to the door post. A third cylindrical pressing rotationally independent of the first two, is fixed to the door with another flange (14). An inner cylinder (15), encloses a torsional spring (24) rotationally coupled at one end to the cylinder (15) by the diametric bar (23), and the other end to the lower outer cylinder (16). The spring (24) torque is transmitted to the central outer cylinder (13) by a stud (26) inserted through holes in the two cylinder walls which are brought into coincidence. For spring adjustment, a choice of holes is available, and a hexagonal plate (21) welded to the end of the inner cylinder applies torque during adjustment.