DOOR HINGE

Abstract

A door hinge has a first leaf assembly, a second leaf assembly pivotally mounted on the first leaf assembly, a first adjustment part on the first leaf assembly, and a second adjustment part adjustable in an adjustment direction relative to the first adjustment part. An eccentric mounted on the first adjustment part for rotation about an eccentric axis engages in the second adjustment part. A screw thread connection secures the eccentric to the first adjustment part.

Claims

1. A door hinge comprising; a first leaf assembly; a second leaf assembly pivotally mounted on the first leaf assembly a first adjustment part on the first leaf assembly; a second adjustment part adjustable in an adjustment direction relative to the first adjustment part an eccentric mounted on the first adjustment part for rotation about an eccentric axis and engaged in the second adjustment part; and a screw thread connection securing the eccentric to the first adjustment part.

2. The door hinge according to claim 1, wherein the screw thread connection is formed by a cylindrical externally threaded section on the eccentric and an internally threaded bore of the first adjustment part.

3. The door hinge according to claim 2, wherein the cylindrical threaded section has at least one flat.

4. The door hinge according to claim 2, further comprising: a coupling formation extending from the threaded section, eccentric to the eccentric axis, and engaging in the second adjustment part.

5. The door hinge according to claim 4, wherein the coupling formation has a rounded, part-circular, outer shape.

6. The door hinge according to claim 5, wherein the coupling formation is formed as a collar with beveled flanks.

7. The door hinge according to one of the claim 1, wherein the eccentric has a tool socket with an at least generally six-sided shape.

8. The door hinge according to one of the claim 1. further comprising: a first stop that limits linear movement of the eccentric along the eccentric axis at a first end position.

9. The door hinge according to claim 8, wherein, in the first end position, the coupling formation of the eccentric extends in the adjustment direction to a first extreme end position.

10. The door hinge according to claim 9, further comprising: a second stop that limits linear movement of the eccentric along the eccentric axis opposite to the first stop up to a second end position.

11. The door hinge according to claim 10, wherein, in the second end position, the coupling formation of the eccentric extends in the adjustment direction to a second extreme end position.

12. The door hinge according to claim 1, wherein the first adjustment part and the second adjustment part are linearly positively guided on each other in the adjustment direction.

13. The door hinge according to claim 12, wherein the first adjustment part bears in surface contact with a first contact surface against a second contact surface of the second adjustment part.

14. The door hinge according to claim 13, wherein the first contact surface and the second contact surface extend perpendicular to the eccentric axis.

15. The door hinge according to claim 14, wherein the first contact surface has a projection extending the adjustment direction and engaging complementarily in a corresponding groove of the second contact surface and/or a projection extending along the adjustment direction is formed on a second contact surface that engages complementarily in a corresponding groove of the first contact surface.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0033] The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:

[0034] FIG. 1 is a three-dimensional view of a door hinge according to the invention,

[0035] FIG. 2 is a three-dimensional view corresponding to FIG. 1 but with the first leaf assembly exploded,

[0036] FIGS. 3A and 3B are detail views of an eccentric according to the invention,

[0037] FIG. 4 is a rear view of a second adjustment part,

[0038] FIG. 5 is a view like FIG. 4 of a further embodiment of the second adjustment part according to the invention, and

[0039] FIG. 6A and 6B are sectional views in different adjustment positions of the second adjustment part of FIG. 5 with the eccentric according to the invention.

SPECIFIC DESCRIPTION OF THE INVENTION

[0040] FIG. 1 shows a door hinge according to the invention 1 with a first leaf assembly 2 and a second leaf assembly 3 pivotally mounted on the first leaf assembly 2. In the illustrated embodiment, pivoting is enabled by a swivel bracket mechanism 4 in a so-called six-axis design. The door hinge 1 extends in a horizontal direction x, a pressing direction y, and in a vertical direction z.

[0041] The first leaf assembly 2 has a first adjustment part 5 and a second adjustment part 7 movable in an adjustment direction 6 (parallel to the pressing direction y) relative to the first adjustment part 5. As one can see in the exploded view of FIG. 2, an eccentric 8 is pivotal on the first adjustment part 5 about an axis a and engages the second adjustment part 7. As FIG. 4 shows, for this purpose the rear side of the second adjustment part 7 is formed with a vertical groove 7a into which when assembled a coupling formation 8a fits complementarily. According to the invention the eccentric 8 is mounted in the first adjustment part 5 by a screw thread connection 8b, 5a. To this end the eccentric 8 has a cylindrical threaded section 8b concentric to the eccentric axis a and that engages in an internally threaded hole 5a of the first adjustment part 5. The cylindrical threaded section 8b is provided with two diametrally opposite flats 8c shown in the detail views of FIGS. 3A and 3B.

[0042] The threaded section 8b extending along the eccentric axis a is formed with a coupling formation 8a that is eccentric to the eccentric axis a and that engages in the second adjustment part 7. In the illustrated embodiment, the coupling formation 8a has a rounded outer shape with an outer surface formed in a semicircle about an eccentric center axis b. The radius of the outer surface around its center axis b is approximately a quarter to a third of the radius of the threaded section 8b around its axis a.

[0043] To save material the coupling formation 8a is formed as a narrow collar with beveled flanks 8d. Except for a small part of the slanted flanks 8d, the coupling formation 8a lies thus nearly completely on one side of a center plane 9 that includes the eccentric axis a and perpendicularly intersects the flats 8c.

[0044] In the illustrated embodiment the eccentric 8 has a hexagonal tool socket 8e. A center axis of symmetry c of the tool socket 8e is thereby approximately in the middle of the rounded outer surface and includes the eccentric axis a and the center axis b.

[0045] As can be seen from a comparative view of FIGS. 2 and 4, the first adjustment part 5 and the second adjustment part 7 are mounted on each other to move relatively only in a straight line along the adjustment direction 6. To this end the first adjustment part 5 has a first contact surface 5b that flatly slides on a second contact surface 7b of the second adjustment part 7. The first contact surface 5b and the second contact surface 7b are thereby perpendicular to the eccentric axis a. For improvement of the constraint the second contact surface 7b has two triangular-section projections 7c that fit in a complementary groove 5c of the first adjustment part 5 and provide positive guidance in the adjustment direction 6.

[0046] For preventing relative movement in the pressing direction y (adjustment direction 6) a clamping screw 10 is provided that engages through a slot 7d in the second adjustment part 7 and is seated in a threaded bore 5d of the first adjustment part 5.

[0047] In the illustrated embodiment the first adjustment part 5 is formed as an intermediate piece shiftable on a base body 2a of the first leaf assembly 2 in the vertical direction z. For this purpose, the first adjustment part 5 holds two set screws 11 that can be moved against respective angled faces 12 of the first base body 2a. For vertical locking, screws 13 are provided that extend through vertically spaced and vertical slots 5e in the first adjustment part 5 and are screwed into respective threaded bores 14 of the base body 2a. Thus the first leaf assembly 2 here can be adjusted in two relatively perpendicular adjustment direction, namely in the pressing direction y as well as in the vertical direction z.

[0048] In this embodiment the door hinge 1 is a recessed door hinge with the six-axis bracket mechanism 4. Thus it has a first bracket 4a on the second adjustment part 7 and a mirror-symmetrical further second adjustment part 7′ pivotal about a vertical axis. A second hinge bracket 4c is pivotal on the first hinge bracket 4a at a connection axis 4b and is also pivoted on the end of a pivot arm 4d of the two adjustment parts 7 and 7′ of the first leaf assembly 2 and is itself pivotal about a vertical axis.

[0049] The second leaf assembly 3 has a second base body 3a for fastening to a door panel or frame. It holds two inserts 3b slidable in the horizontal direction x and holding the swivel bracket mechanism 4. The second hinge bracket 4c is pivotal on the two inserts 3b about a vertical axis. The pivot axis on the first hinge bracket 4a is movable in the inserts 3b. To adjust the door hinge 1 in the horizontal direction x, two adjustment screws 3c are effective between the two inserts 3b and the second base body 3a.

[0050] FIG. 5 shows a second adjustment part 7′ according to a further embodiment. This differs from the second adjustment part 7 according to FIG. 4 exclusively by the design of the vertically extending groove 7a′ that is provided for engagement of the eccentric 8. According to the embodiment from FIG. 5 the vertical groove 7a′ has two vertically extending side faces 15, a rounded bottom face 16 as well as a horizontally and straight extending top face 17.

[0051] The mode of operation is shown in the FIG. 6A and 6B. FIG. 6A shows a so-called neutral position or “base position.” The eccentric 8 here has its coupling formation 8a in the groove 7a′. Thereby the flanks of the coupling formation 8a lie on the side faces 15 and the rounded face of the coupling formation 8a lies on the lower face 16 with play. Thus the eccentric 8 positions the second adjustment part 7′ in the adjustment direction 6 without play.

[0052] FIG. 6B shows an adjusted position in which the eccentric 8 is rotated by 90° counterclockwise. Here the second adjustment part 7′ is moved into the dot/dash indicated base position in the adjustment direction 6 by an amount d. The rounded face of the eccentric 8 bears on one of the two side faces 15. At the same time the horizontal upper face 17 serves as a stop that prevents further rotation of the eccentric in the same direction of rotation in cooperation with the positive guidance in the direction of adjustment 6. Thus rotary movement of the eccentric can be restricted to the usable angular range of 180°.