Door fitting device capable of adjusting axis of rotation and torque

Claim 1

A door fitting device capable of adjusting an axis of rotation and torque, which comprises: a vertical pivot 3 supporting rotatably the upper end portion of a door 2 relative to an upper horizontal frame 1; a torsion bar 4 disposed inside said door 2 on the lower extension of said vertical pivot 3, and fixedly secured at its upper end portion 4a to said door; a worm wheel 6 disposed unrotatably to the lower end portion 4b of said torsion bar projecting from a lower end opening 5 of said door 2; a substrate 8 fixedly secured to a lower horizontal frame 7; a movable case 10 disposed movably in a horizontal direction along the upper surface of said substrate 8, and equipped on its upper surface with a recess 9 for storing said worm wheel 6; a worm 12 stored rotatably in a receiving groove 11 on the upper surface of said movable case 10, and engaging with said worm wheel 6; an adjustment screw 16 inserted into a horizontal screw hole 13 of said substrate 8 and into a horizontal through-hole 14 of said movable case 10, for moving back and forth said movable case 10 relative to a side vertical frame 15 by means of normal and reverse rotation thereof; a lid 17 fitted to said torsion bar 4, said lid abutting on the upper surface of said movable case 10 and preventing the float of said worm wheel 6 and said worm 12; and a shaft cylinder 20 fitted coaxially to said torsion bar 4, and having the upper end cylinder portion 18 fitted into said opening 5 of said door 2 and the lower end cylinder portion 19 thereof fitted to a ring-like step portion 21 on the upper surface of said lid 17.