Adjustable hinge

A hinge includes a hinge arm which is adjustable in three directions. An intermediate member is situated between the hinge arm and a mounting plate. One screw clamps the intermediate member to the mounting plate, another screw clamps the hinge arm to the intermediate member, and a third screw acts between the intermediate member and the mounting plate providing an adjustment of the hinge arm in a plane vertical to the mounting plate.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to an adjustable hinge, particularly for 
furniture doors, comprising a hinge arm linked to a second hinge member, 
e.g. a dowel housing, by means of hinge links or the like and being 
carried by an intermediate member retained on a mounting plate adapted to 
be fastened to a furniture part. 
2. Description of the Prior Art 
Hinges of the above-described kind are frequently used in modern furniture 
construction, and they should generally fulfill a number of requirements. 
First, it should be easy to put the door on its hinges, i.e. it should be 
easy to fasten it to the body of the piece of furniture. Second, when the 
door wing has been placed on its hinges, various corrections with respect 
to its position should be possible so that any inaccuracies resulting from 
the drilling of fastening holes can be overcome. 
Basically, adjustments of the hinge in the direction of the depth of the 
piece of furniture and in the direction of the breadth of the door joint 
is required. An adjustment in the direction of the height of the piece is 
also desirable. 
SUMMARY OF THE INVENTION 
It is the object of the present invention to provide a hinge allowing the 
three afore-mentioned possibilities of adjustment. Moreover, the hinge arm 
is adapted to be easily mounted on the mounting plate, when the door is 
put on its hinges, and the hinge members mounted on the furniture side 
wall are of highly compact construction providing accurate guiding of the 
hinge arm during adjustment. 
According to the present invention, this object is achieved by providing an 
intermediate member with a slot which is open at its rear end, a clamping 
screw, which is mounted on the mounting plate, projecting through such 
slot, and by mounting an adjusting screw in the intermediate member, the 
head of such adjusting screw extending into a recess in the mounting 
plate, such recess being of T-shaped cross-section and open forwardly. 
It is preferably provided that the inside width of the hinge arm, which has 
a U-shaped configuration is greater than the breadth of the intermediate 
member, thereby obtaining a hinge covered on all sides. 
It is further provided that the intermediate member has a guiding recess 
extending transversely to the longitudinal direction of the hinge arm and 
a projection of the hinge arm extending into such guiding recess. Hence, 
the hinge arm is secured against being distorted by the weight of the 
door. 
The positioning of the hinge arm is facilitated by adapting the side walls 
of both the guiding recess and the projection to converge towards the 
mounting plate and to rest against one another when the hinge arm is in 
the mounted position. 
It is preferably provided that a clamping screw retaining the hinge arm is 
arranged on the bottom of the guiding recess, thereby avoiding that hinge 
members project laterally, when the hinge is in the mounted position. The 
hinge can also be provided with a cover plate, which covers the screw. 
A further feature provides that the hinge arm at its rear end above the 
clamping screw is provided with an aperture. The clamping screw and the 
aperture can also be covered by the cover plate, which is preferably 
pivotally mounted on the hinge arm by means of a pin. 
A further feature provides that the hinge arm has a hole arranged above the 
adjusting screw, such hole preferably being a transversely extending slot. 
By turning the cover plate, all screws are accessible for adjusting and 
fixing the hinge arm.

DESCRIPTION OF THE PREFERRED EMBODIMENT 
The hinge in accordance with the present invention has a mounting plate 7 
fastened to a furniture side wall 9 by means of fastening screws 8. Other 
fastening means, e.g. dowels, naturally also can be used. 
The hinge arm 1 is not directly fastened to the mounting plate 7 but is 
retained on an intermediate member 4 by means of a hinge arm clamping 
screw 5. The intermediate member 4 is provided with a recess 10 having 
converging side walls 10'. A projection 11 of the hinge arm 1 having side 
walls 11' extends into recess 10, side walls 11' being parallel to side 
walls 10'. The clamping screw 5 extends through a transversely extending 
guiding hole 10a in projection 11 and is threaded into a female thread of 
the intermediate member 4. In this embodiment, the hinge arm 1 is 
torsion-resistantly mounted on the intermediate member 4. 
The intermediate member 4 has an adjusting screw 3 at its front end. A slot 
12, which is open at its rear end, is provided at the rear end of the 
intermediate member. 
An intermediate member clamping screw 6 extends through open slot 12, the 
clamping screw 6 being mounted in a female thread 13 of the mounting plate 
7. Mounting plate 7 is preferably provided with a base 14 in the region of 
the clamping screw 6. Base 14 is provided with indentations 15 at its 
upper end, and the intermediate member 4 has also indentations 16 on both 
sides of the slot 12. 
The mounting plate 7 has a recess 17 on its front side, such recess being 
of T-shaped cross-section and open in the forward direction. 
When putting the door on its hinges, the intermediate member 4 is fastened 
to the hinge arm 1 by means of the clamping screw 5. The hinge arm 1 is 
fastened to the dowel casing, which is inserted in the door, by means of 
the hinge links. 
When being mounted, the hinge arm 1 with the intermediate member 4 is 
pushed onto the mounting plate 7 in such a manner that the clamping screw 
6, which is screwed into the mounting plate 7, extends through the slot 12 
with the intermediate member 4 being positioned underneath the head of the 
clamping screw 6. At the front end, a head 18 of the adjusting screw 3 is 
pushed into the recess 17, head 18 resting against projections 19 
delimited by recess 17. 
Hence, the door is retained on the furniture side wall 9 simply by pushing 
the hinge arm onto the mounting plate. 
The adjustment of the breadth of the door joint is effected by turning the 
adjusting screw 3. 
When the hinge arm 1 is in the direction of the desired position in the 
depth of the piece of furniture, the clamping screw 6 is fastened, and the 
hinge arm 1 is fixed on the mounting plate 7. Unintentional displacement 
is eliminated by the indentations 15,16. 
When the hinge arm 1 is to be adjusted in the direction of the height of 
the piece of furniture, the clamping screw 5 is loosened, and the hinge 
arm 1 can then be moved due to guiding hole 10a. When the hinge arm is in 
the desired position, the clamping screw 5 is fastened, and the hinge arm 
1 is adjusted and secured. 
In order to provide an access for tools, the hinge arm has a slot 20 
extending transversely of its longitudinal center plane and an aperture 21 
arranged at its rear end. 
The hinge arm 1 further comprises a cover plate 2 pivotally mounted on the 
hinge arm 1 by means of pin 22. When the hinge arm has been finally 
adjusted and fixed, the cover plate is turned to the direction of arrow A 
in FIG. 2 and then covers all of the apertures and adjusting screws.