Hinge with tension-adjustable spiral torsion spring
First Claim
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1. A hinge (1), comprising:
- a pivoting hinge leaf (2) and a fixed hinge leaf (3);
a hollow hinge axle (7) common to said pivoting hinge leaf and said fixed hinge leaf;
a first journal bearing and a second journal bearing, said first journal bearing includes a first journal bearing body, and, said second journal bearing includes a second journal bearing body;
said hollow hinge axle includes an axis (4), said hollow hinge axle (7) connected unmovably to said pivoting hinge leaf (2) and mounted rotatably on said first and second journal bearings (5-1, 5-2);
said first journal bearing body of said first journal bearing and said second journal bearing body of said second journal bearing are rigidly connected with said fixed (3) hinge leaf;
a spiral torsion spring (8) residing in said hollow hinge axle (7);
said spiral torsion spring includes a first end (8-1) and a second end (8-2);
said first (8-1) end of said spiral torsion spring (8) is connected unmovably to said hinge axle (7);
a worm-gear unit includes a worm wheel (9) and an endless screw (6), said endless screw (6) resides in said first journal bearing body of said first journal bearing (5-1), and, said worm wheel includes teeth (9-10);
said second (8-2) end of said spiral torsion spring is connected to said worm wheel;
said endless screw (6) drives said worm wheel;
said second (8-2) end of said spiral torsion spring (8) rotates with said worm wheel;
said worm wheel (9) in said first journal bearing (5-1) rotates around said axis (4) of said hinge axle (7) and is unmovably fixed to said second (8-2) end of said spiral torsion spring (8);
said teeth of said worm wheel interengage said endless screw (6), and, rotation of said endless screw rotatably drives said worm wheel (9) and said spiral torsion spring adjusting tension of said spiral torsion spring (8).
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Abstract
A hinge has a pivoting leaf (2) and a fixed leaf (3), a hollow axle (7) fixedly connected to the pivoting leaf and rotatably connected to first and second journal bearings (5-1, 5-2) of the fixed hinge leaf, a spiral torsion spring (8) arranged in the hollow axle. One end of the spring is fixed to the hollow axle and the other end of the spring is fixed to a worm wheel (9) that is arranged in the first journal bearing. An endless screw (6) resides in the first journal bearing and engages with the worm wheel. Rotation of the endless screw drives the worm wheel and the spiral torsion spring to rotate, thereby adjusting the tension of the spring.
28 Citations
7 Claims
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1. A hinge (1), comprising:
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a pivoting hinge leaf (2) and a fixed hinge leaf (3); a hollow hinge axle (7) common to said pivoting hinge leaf and said fixed hinge leaf; a first journal bearing and a second journal bearing, said first journal bearing includes a first journal bearing body, and, said second journal bearing includes a second journal bearing body; said hollow hinge axle includes an axis (4), said hollow hinge axle (7) connected unmovably to said pivoting hinge leaf (2) and mounted rotatably on said first and second journal bearings (5-1, 5-2); said first journal bearing body of said first journal bearing and said second journal bearing body of said second journal bearing are rigidly connected with said fixed (3) hinge leaf; a spiral torsion spring (8) residing in said hollow hinge axle (7); said spiral torsion spring includes a first end (8-1) and a second end (8-2); said first (8-1) end of said spiral torsion spring (8) is connected unmovably to said hinge axle (7); a worm-gear unit includes a worm wheel (9) and an endless screw (6), said endless screw (6) resides in said first journal bearing body of said first journal bearing (5-1), and, said worm wheel includes teeth (9-10); said second (8-2) end of said spiral torsion spring is connected to said worm wheel; said endless screw (6) drives said worm wheel; said second (8-2) end of said spiral torsion spring (8) rotates with said worm wheel; said worm wheel (9) in said first journal bearing (5-1) rotates around said axis (4) of said hinge axle (7) and is unmovably fixed to said second (8-2) end of said spiral torsion spring (8); said teeth of said worm wheel interengage said endless screw (6), and, rotation of said endless screw rotatably drives said worm wheel (9) and said spiral torsion spring adjusting tension of said spiral torsion spring (8). - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification