RECESSED ADJUSTABLE DOOR HINGE

Abstract

A hinge has two housings adapted to be recessed in a door frame and a door edge and a link assembly extending between the housings and having ends pivoted in the housings. A vertically shiftable support body in one of the housings has a row of teeth extending horizontally in a first direction. A bearing block sitting on the support body forms a pivot for the respective end of the link assembly. A screw extending through the bearing block and threaded into the support body is tightenable to bear on and fix the bearing block on the support body. A gear captured in the seat of the bearing block meshes with the row of teeth and is rotatable to shift the bearing block on the support body in the first horizontal direction in an untightened condition of the screw.

Claims

1. In a hinge having two housings adapted to be recessed in a door frame and a door edge and having a link assembly extending between the housings and having ends pivoted in the housings, the improvement comprising: a support body vertically shiftable in one of the housings and having a row of teeth extending horizontally in a first direction; a bearing block supported in the housing on the support body, forming a pivot for the respective end of the link assembly, formed with a seat open toward the row of teeth, and formed with a throughgoing block hole extending in a second horizontal direction transverse to the first horizontal direction; a screw threaded into the support body, extending through the block hole, and tightenable to bear on and fix the bearing block on the support body; and a gear captured in the seat of the bearing block, meshing with the row of teeth, and rotatable to shift the bearing block on the support body in the first horizontal direction in an untightened condition of the screw.

2. The hinge defined in claim 1, wherein the block is formed with two such throughgoing block holes and there two such screws threaded into the support body and each passing through a respective one of the block holes.

3. The hinge defined in claim 1, wherein the support body is unitarily formed of die-cast metal with a projection formed with the row of teeth.

4. The hinge defined in claim 3, wherein a pressure face of the projection extends at an acute angle to the second direction, the hinge further comprising: means engaged with the pressure face for vertically shifting the projection, support body, and bearing block.

5. The hinge defined in claim 4, wherein the means engaged with the pressure face includes: a wedge having a wedge face flatly engaging the pressure face, supported on the one housing, and shiftable on the one housing in the second horizontal direction to vertically move the support body and bearing block; and an actuating element engaged between the housing and the wedge for moving the wedge in the second horizontal direction.

6. The hinge defined in claim 5, wherein the projection is formed with a projection hole extending in the second horizontal direction and elongated vertically, the actuating element being a screw threaded in the housing, passing through the projection hole, and bearing in the second direction on the wedge.

7. The hinge defined in claim 5, wherein the support body is formed with at least one throughgoing body hole extending in the second horizontal direction and vertically elongated, the hinge further comprising: a screw extending through the body hole, threaded in the housing, and tightenable against the support body to fix same against the housing.

8. The hinge defined in claim 1, wherein the bearing block is unitarily formed of die-cast metal with the seat, the seat extending around a rotation axis of the gear by more than 180.

9. The hinge defined in claim 8, wherein the gear is provided with a collar bearing in the second horizontal direction on the bearing block.

10. The hinge defined in claim 1, wherein linkage has in the one housing first and second links, the bearing block being formed with a groove for horizontally guiding the first link and a bearing hole for rotatably supporting the second link.

11. The hinge defined in claim 1, wherein housing 1 is die cast of metal and forms a cavity receiving for the support body and the bearing block.

12. The hinge defined in claim 1, wherein there are two of the bearing blocks, support bodies, screws, and gears vertically flanking the one end of the link assembly in the one housing.

13. The hinge defined in claim 12, wherein the one housing has two end parts each hold a respective one of the support bodies, and a middle part vertically bridging the end parts and holding the bearing blocks.

14. The hinge defined in claim 13 wherein the middle part is a thin-walled shell having a base and at least one side wall that extend between the end parts.

15. The hinge defined in claim 1, wherein each of the housings is provided with a mounting flange for securing the respective housing to an edge of the door or a door frame.

16. The hinge defined in claim 1, wherein the other of the housings is provided means for adjusting a horizontal depth of the respective end of the link assembly into the other housing.

17. The hinge defined in claim 1, wherein the gear is provided with a formation matable with a tool outside the one housing for rotating the gear and horizontally shifting the bearing block.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0023] 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:

[0024] FIG. 1 shows a recessed-mount door hinge between a door frame and a door;

[0025] FIG. 2 is a large-scale vertical cross section through part of a hinge housing for a recessed door hinge, in particular for the door hinge illustrated in FIG. 1;

[0026] FIG. 3 is a perspective view of a detail of the hinge housing illustrated in FIG. 2; and

[0027] FIG. 4 shows a bearing block of the hinge housing illustrated in FIG. 2.

SPECIFIC DESCRIPTION OF THE INVENTION

[0028] As seen in FIG. 1 a recessed-mount door hinge between an unillustrated door frame and door has a first hinge part 1, a second hinge part 2, and a link assembly 3 connecting the two hinge parts 1 and 2 for relative pivoting about a vertical axis A. The two hinge parts 1 and 2 fit into respective mortises in the door frame and in an edge of a door. On its upper and lower ends the first hinge part 1 has hinge housings 4 that are described below with reference to FIGS. 2 to 4. The second hinge part 2 is of similar but simpler construction.

[0029] The hinge housings 4 illustrated in FIGS. 2 to 4 are die cast and intended for a recessed door hinge for doors or windows, and each has a mounting formation or flange 5 for fastening to a frame or a door or a window, a respective support body 6 held in a cavity 7 of each of the housings 4 so as to be vertically adjustable in a z direction, and a respective bearing block 8 resting on the respective body 6 and in which is journaled the respective end of the links of the link assembly 3.

[0030] Each bearing block 8 is horizontally shiftable on the respective support body 6 in the x direction and can be fixed to the support body 6 by a screw connection 9. In this embodiment, the screw connection 9 is formed by two parallel and horizontal screws 10 extending in a horizontal y direction through the bearing block 8 and threaded into the support body 6, passing through respective horizontally elongated holes 11 in the bearing block 8. When loosened, the screw connection 9 allows horizontal movement of the bearing block 8 along the support body 6 in a horizontal direction x in order to adjust the contact pressure of the door against a door seal, the so-called compression setting.

[0031] As shown in FIGS. 2 and 3, the support body 6 is die-cast and has a projection 12 on which is formed a row of upwardly directed teeth 13. The lower side of the projection 12 facing away from the teeth 13 has an angled wedge face 14 that is acted on by a vertical adjustment device 15. This vertical adjustment device 15 has a wedge 16 with an angled pressure face 17 that is complementary to and slidable on the wedge face 14 of the projection. It may be moved relative to the support body 6 by a screw 18 passing through a vertically elongated but horizontally extending hole 18 in the wedge 16. The wedge face 14 and its associated complementary pressure face 17 are inclined at an angle that is advantageously approximately 45 to the axis A or the vertical direction z.

[0032] Movement of the adjustment screw 18 in the y direction exerts a vertical force vector in the z direction on the support body 6. The adjustment screw 18 passes through the hole 19 in the wedge face 14 of the projection 12 that is vertically elongated as a slot to permit relative movement between the wedge 16 and the support body 6 as is necessary for the vertical adjustment of the support body 6. The wedge 16 is supported on a flat horizontal face 20 of the housing 4. Vertical adjustment of the support body 6 is possible under load in that the wedge 16 can accommodate the weight of the door that is transmitted via the articulated joint connection of the link assembly 3.

[0033] The support body 6 can be fixed to the mounting flange 5 by a screw connection 21. The screw connection 21 has at least one adjustment screw 22 passing through a vertically elongated throughgoing hole 23 in the support body 6 and threaded into the housing 4. In this embodiment and according to one preferred design, two such adjustment screws 22 and respective holes 23 are provided.

[0034] The bearing block 8 has a rotatably mounted pinion gear 24 meshing with the teeth 13 of the short rack fixed on the support body 6, and can horizontally shift the bearing block 8 on the support body 6 if the screw connection 9 is loosened. The bearing block 8 has a part-cylindrical seat 25 complementarily holding the pinion 24, and may be economically manufactured as a die-cast part. The gear seat 25 extends mostly around the pinion 24 through preferably more than 180. The pinion 24 has a collar 26 engaging behind a countersurface of the bearing block 8 and axially securing the pinion 24 in the gear seat 25.

[0035] The bearing block 8 has a groove 27 for longitudinally guiding a first link, and a bearing hole 28 for bearing a second link in a rotatably movable manner.

[0036] The first hinge part 1 of the door hinge illustrated in FIG. 1 has two housings 4 carried at opposite ends of a L-section middle part 29. The housing 4, the mounting flange 5, and the support body 6 of the two hinge parts 4 situated therein form separate assemblies which are not part of the middle part 29. The middle part 29 is designed as a thin-walled shell, and has a base 30 and at least one side wall 31 bridging the space between the bearing blocks 8, and has a height that corresponds to the depth of the mortise.

[0037] The second hinge part 2 of the door hinge illustrated in FIG. 1 has an adjustment device 32 via which a bearing arrangement of the links of the link assembly 3 is horizontally adjustable in the depth direction of the mortise, that is horizontally parallel to the plane of the door. The door may be laterally adjusted by this adjustment device 32. The adjustment device 32 is therefore also referred to as an adjustment device for lateral adjustment.