EP2037066A2

EP2037066A2 - Adjustable leaf hinge part

Info

Publication number: EP2037066A2
Application number: EP08162907A
Authority: EP
Inventors: Tomasz Grochala
Original assignee: Schuering & Co Fenstertechnologie KG GmbH; SCHUERING FENSTERTECH
Current assignee: SCHUERING FENSTER- und TUERTECHNOLOGIE GmbH
Priority date: 2007-09-13
Filing date: 2008-08-25
Publication date: 2009-03-18
Also published as: DE102007043757B3; EP2037066A3

Abstract

The invention concerns an adjustable leaf hinge part (1) of a hinge for doors or windows, comprising a support part (3) to be secured to a leaf and an adjustment part (4) having a receiving means (33) for a hinge pin, wherein the adjustment part (4) is guided displaceably on the support part (3) in a horizontal adjustment direction.
The object of the present invention is to provide a simple leaf hinge part which is inexpensive to produce.

That object is attained in that at least the mutually co-operating portions of the support part (3) and the adjustment part (4) comprise flat steel sheets, wherein at least one projection is bent out of the flat sheet of at least one of the two parts (3 or 4) of the leaf hinge part (1), which projection forms at least one guide surface which extends in the adjustment direction and which bears against a guide surface of the other of the two parts (4 or 3) so that the adjustment part (4) is fixed to the support part (3) transversely with respect to the adjustment direction.

Description

The invention concerns an adjustable leaf hinge part of a hinge for doors or windows, comprising a support part to be fixed to a leaf and an adjustment part with a receiving means for a hinge pin, wherein the adjustment part is guided displaceably on the support part in a horizontal adjustment direction. The invention further concerns a hinge having such a leaf hinge part and a process for the production of such a leaf hinge part.
In particular the invention concerns a leaf hinge part for an adjustable door hinge or window hinge, in which the support part is fixed to a leaf or casement and the adjustment part is steplessly adjustable by means of an adjustment drive supported against the support part and can be fixed by means of at least one fixing screw. The adjustment drive preferably includes an eccentric which has a cylindrical portion held rotatably in an opening in the adjustment drive and a cylindrical eccentric pin which is eccentric in relation to the cylindrical portion and which engages into a slot in the support part.
A hinge of this kind is sometimes also referred to as flap hinge or flag hinge. Such a hinge with a leaf hinge part which comprises an adjustment part and a support part is known for example from EP 1 126 115 A2 to the present applicant. Here the support part, the adjustment part and the eccentric of the adjustment arrangement comprise a cast metallic component, namely a metal part produced by a zinc die casting process. In the zinc die casting process, the receiving means for the eccentric, the slots and the screw holes as well as the receiving means for the hinge pin are shaped on the support part and on the adjustment part respectively. Such a leaf hinge part has proved its worth in practice for the production of a door hinge which is adjustable in various directions. In contrast the production of components using the zinc die casting process is complicated and expensive and requires relatively costly production moulds. Furthermore zinc suitable for die casting processing is relatively expensive. Similar door hinges with similarly complex leaf hinge parts are to be found for example from WO 2005/116380 and US No 6 434 791 B1 .
EP 1 734 211 A2 discloses a flap hinge having a support part which is bent from sheet metal and which can be screwed fast to the door leaf. The support part has a receiving means formed from the bent sheet metal for a tongue of the frame hinge part. For adjustment purposes the tongue of the frame hinge part is movable both horizontally and vertically by a certain amount in relation to the support part so that, when the adjustment screws are released, the support part can move downwardly on the leaf in relation to the frame hinge part.
In the flap hinge in accordance with DE 10 2005 022 042 B3 the guiding portion of the adjustment part of the leaf hinge part is in the form of a flat plate. It is horizontally displaceably accommodated in a highly complex multi-part support portion in the rabbet region of a door. The complex support part is highly expensive in manufacture.
A relatively simple leaf hinge part is disclosed in CH 63066 . Here the support part and the adjustment part of the hinge comprise metal plates which are guided one in the other. The outer metal plate forms a dovetail-like receiving means for the adjustment part. The adjustment part is of a complementary dovetail shape. The two components have to be manufactured in a quite expensive procedure, for example by cutting machining so that the mutually co-operating guide surfaces cannot jam.
DE 2 119 313 discloses a leaf hinge of sheet metal, of a different basic kind. Here the publication discloses a leaf hinge part which is accommodated in an opening or pocket in a door leaf. It extends within the leaf material parallel to the leaf plane and by virtue of its complex structure is not suitable for fixing to the front side of the leaf. In addition the arrangement has only one adjustment screw which extends in the adjustment direction and engages into a screwthreaded bore in a bent-over claw of the adjustment part. There is no possibility of fixing that adjustment drive which is formed by an adjustment screw. That hinge is therefore not suitable for carrying heavy doors such as house front doors because the high weight cannot be reliably and securely held by the adjustment screw.
US No 6 434 791 B1 describes a door hinge as described in the opening part of this specification, having a complex adjustment part which can only be produced by a metal casting process. The adjustment part has an opening into which can be inserted an adjustment plate to be fixed to the leaf. The adjustment plate has securing screws extending therethrough and fixes a securing plate of the adjustment part. When the securing screws are tightened the securing plate is clamped fast between the adjustment plate and the leaf. The adjustment part further has a cover for the opening, in which the adjustment plate is accommodated. The cover is carried by way of sliding guides on the adjustment part so that gaps are formed between the adjustment part and its cover.
The object of the present invention is to provide a leaf hinge which is suitable even for heavy doors, with the adjustment options of the general kind set forth, which is simple and inexpensive to produce.
In accordance with the invention that object is attained in that at least the mutually co-operating portions of the support part and the adjustment part comprise flat steel sheets, wherein at least one projection is bent out of the flat sheet of at least one of the two parts of the leaf hinge part, which projection forms at least one guide surface which extends in the adjustment direction and which bears against a guide surface of the other of the two parts so that the adjustment part is fixed to the support part transversely with respect to the adjustment direction.
Thus, the projection may be bent out of the support part and bear against a guide surface of the adjustment part. Alternatively the projection may be bent out of the adjustment part and bear against a guide surface of the support part. Further, a plurality of projections may be provided. These may be bent out of just one of the two parts or out of both parts and each bear against a guide surface of the respective other part.
In accordance with the invention therefore simple flat steel sheets are used for forming the parts, which are guided against each other, of the leaf hinge part, that is to say to form the support part and the adjustment part. A part of the guide surfaces is formed by simply and inexpensively bending metal portions of at least one of the flap parts. The guide surfaces are of such a configuration that the parts are fixed transversely with respect to the horizontal adjustment direction and therefore cannot move downwardly in relation to the frame even when the securing screws of the leaf are loosened. That novel configuration for the adjustable leaf hinge part permits manufacture of the support part and the adjustment part from a steel sheet by simple cutting processes, in particular stamping but also drilling, milling, screwthread cutting or laser cutting, and by bending or folding.
Steel sheets are usually produced in a gauge of up to 8 mm and above. In particular steel sheets of a thickness of from 2 to 4 mm, in particular 3 mm, are suitable for production of the leaf hinge part according to the invention.
Steel sheet is a standard material which is produced in large amounts and is therefore inexpensive to buy. Processing thereof by cutting or bending is well-known and widespread. The cutting operation is effected in particular by a stamping procedure. In that case the metal sheet is put into a stamping press, the required shapes being cut out of the sheet by cutting edges which are moved relative to each other. At the same time it is also possible to implement shaping operations, in particular bending/folding operations, by means of the press. Alternatively other cutting processes can be used for steel sheet. Mention is to be made here in particular of laser cutting and machining cutting (drilling or milling). The bent configurations then have to be produced in a separate shaping step.
Steel sheet is available in the most widely varying qualities. In particular stainless steel sheet is suitable for the production of the leaf hinge parts according to the invention. Leaf hinge parts produced therefrom have a high level of resistance to corrosion and thus a long service life while retaining full functional capability, in particular in respect of the adjustment mechanism.
The guides for the adjustment part on the support part can be produced by simple bending or folding of portions of the steel sheet. For example sheet metal noses or sheet metal strips of the support part can be bent out, which form portions of a guide surface extending parallel to the adjustment direction. Those guide surfaces project into slots in the adjustment part or bear against the side edges thereof. The guide surfaces which bear against each other permit displacement of the adjustment part in the adjustment direction but in contrast fix the adjustment part in transverse relationship with the adjustment direction.
Alternatively, particularly if the adjustment part also comprises steel sheet, the guide surfaces of the support part can be formed by openings which in particular are in the form of slots. In that case the guides of the adjustment part are in the form of complementary projections.
In a practical embodiment of the invention the support part can comprise a steel sheet, the two mutually oppositely disposed edges of which are bent over at least in portion-wise manner and form mutually parallel guide limbs, between which the adjustment part is held displaceably.
The guide for the adjustment part is formed on the support part by simply bending over the mutually parallel upper and lower edges through 90°. That provides two mutually parallel guide limbs which form the guide surfaces, between which the adjustment part is displaceably inserted. If only short portions of the upper and lower edges are bent over, a plurality of (for example two) guide limbs can be produced for each edge, in which case the adjustment part is displaceable between two respective mutually opposite guide limbs.
As in the state of the art a hinge pin is arranged in practice on the adjustment part. The adjustment part can in practice also comprise a steel sheet. In that case the receiving means for the hinge pin can be in the form of an eye bent from the steel sheet. Thus the adjustment part like the support part can be formed by cutting (in particular stamping) and bending from steel sheet.
Bent eyes are known for receiving hinge pins in simple iron door hinges. Pin receiving means of that kind are unusual for modern window hinges or house front door hinges which are adjustable in a plurality of directions.
In practice the portion of the adjustment part, which adjoins the eye, can extend at an angle relative to the main plane of the adjustment part. For example the portion can be offset, that is to say the sheet which forms the adjustment part is bent in the region adjoining the eye, out of the plane thereof. That provides that the eye extends exclusively on one side of the contact surface of the adjustment part. In other words, no portion of the bent eye projects beyond the contact surface of the adjustment part, which bears against the contact surface of the support part. That arrangement ensures free displaceability of the adjustment part with respect to the support part. Alternatively the portion of the adjustment part, that adjoins the eye, can be bent relative to the main plane of the adjustment part in such a way that the pin receiving means is disposed substantially behind the contact surface of the adjustment part. In that case, the pin receiving means can admittedly no longer be pushed into the region in front of the contact surface, but it can be arranged laterally of the edge of the frame so that it projects only slightly or not at all, out of the plane of the hinge part. That affords novel aesthetic options. The flap can be designed in such a way that only the two thin sheet metal portions project beyond the plane of the leaf.
In addition, in practice at least parts of the guide limbs can be further bent over and form holding tongues extending parallel to the main plane of the support part. The holding tongues are at a spacing relative to the contact surface of the support part. The adjustment part extends between that contact surface and the holding tongues. The holding tongues ensure that the adjustment part is not unintentionally released from the support part upon assembly and before being screwed to the support part.
In addition the adjustment part can have a pressure element which pushes the adjustment part away from the support part. That provides for a further adjustment direction, with the leaf hinge part. Displacement between the guide limbs permits horizontal displacement of the adjustment part with respect to the support part parallel to the contact surface of the support part. A pressure element which pushes the adjustment part away from the support part permits an adjustment movement in a direction perpendicular to the contact surface of the support part. In practice the pressure element can be a pressure screw which can be screwed into a screwthreaded bore in the adjustment part, for example a grub screw but also a screw with a head, which pushes against the contact surface of the support part. That displacement in the plane perpendicular to the contact surface of the support part and thus perpendicular to the plane of the door is helpful in terms of adjusting the contact pressure of the closed leaf against the frame. If the support part has holding tongues the pressure element pushes the adjustment part in the direction of the holding tongues. The holding tongues prevent the adjustment part from being pushed excessively away from the support part. The adjustment part can be deformed in the assembled condition by the pressure element. That does not give rise to any problems as the adjustment part comprises steel sheet which, without impairment of its mechanical properties, is elastically and also plastically deformable - unlike for example castings. Displacement by deformation is consequently possible without adversely affecting the functional capability of the leaf hinge part, when using the leaf hinge part according to the invention.
As mentioned hereinbefore the adjustment part can be steplessly adjustable by means of an adjustment drive which is supported against the support part, and can be fixed by means of at least one fixing screw. The adjustment drive preferably includes an eccentric having a cylindrical portion which is held rotatably in an opening in the adjustment part and a cylindrical eccentric pin which is eccentric relative thereto and which engages into a slot in the support part. The eccentric can be produced in the form of a casting, a turned component or a stamped component or in any other suitable fashion.
As mentioned the adjustment part can be fixed to the support part preferably by means of at least one fixing screw. The fixing screw can extend through a slot in the adjustment part, the slot being parallel to the edge of the adjustment part. In the support part the fixing screw can be screwed into a female screwthread provided there. The fixing screw can also have a pin portion which adjoins the screwthread of the fixing screw and which projects out of the support part, on the side remote from the adjustment part. In the state of the art, such securing pins had to be formed on the side of the support part, that is remote from the adjustment part. In accordance with the present invention the fixing screws implement a double function. On the one hand they fix the adjustment part with respect to the support part. On the other hand they form the securing pins which are disposed on the side of the support part, that faces towards the door leaf or window leaf or casement, which pins can be fitted into suitable bores in the leaf in order to fix the position of the hinge part on the leaf.
The pin portion which projects out of the rear side of the support part can in practice be free of a screwthread. The smooth cylindrical peripheral surface of that pin portion guarantees good transmission of the holding forces from the pin portion to the bores in the leaf. The screwthread can however be continuous without adversely affecting the function of the pin portion.
In addition there are preferably provided common securing screws which pass through screw holes in the adjustment part and the support part in order to secure both parts together to the leaf of a door or a window. In that arrangement the screw holes of the adjustment part are preferably in the form of slots.
In practice the adjustment part can have at least one screw hole in the upper half and a screw hole in the lower half, wherein the openings in the adjustment part for the eccentric are arranged between the screw hole in the upper half and the screw hole in the lower half. That makes it possible for both the screw holes and the securing screws as well as the eccentric to be arranged as closely as possible to the edge of the support part, that is towards the leaf, and to be at the greatest possible spacing relative to the pressure element. That permits resilient flexing of the adjustment part consisting of steel sheet, under the action of the pressure element which acts in the proximity of the oppositely disposed edge against the support part.
In practice the support part and the adjustment part together with the receiving means for the hinge pin can be covered by a cover cap. In the case of the door flap hinges in the state of the art the hinge pin receiving means was usually formed from the die cast material of the adjustment part. The same applies for given edge regions of the support part. Consequently, in the state of the art, the visible surface of the leaf hinge part comprises at least two different components, namely the cover cap, the pin receiving means and optionally further portions of the adjustment part or portions of the support part. In accordance with the invention the whole of the visible surface of the leaf hinge part can be formed by the cover cap. The cover cap covers all parts made of steel sheets. The material of the cover cap can be freely selected. In practice the cover cap can comprise in particular plastic material or metal. As the whole of the visible surface of the leaf hinge part comprises a homogeneous component, there is no fear of colour differences. In the past they were problematical in the state of the art if the pin receiving means was formed from zinc die casting and the cover cap from plastic material. A further advantage, by virtue of the fact that all visible regions of the hinge part are formed by a single cover cap, is that, in the event of damage to the visible portions, it is possible to restore a perfect visual appearance for the hinge part by simple replacement of the cover cap which is mostly quite favourably costed in terms of manufacture.
Preferably the cover cap can be fixed to the adjustment part. It can be fixed in particular by being clipped or screwed fast thereto or by both connecting methods.
As mentioned in the opening part of this specification the invention also concerns a hinge comprising a frame hinge part for fixing to a frame and a leaf hinge part for fixing to the leaf, which is connected hingedly to the frame hinge part by way of a hinge pin. To attain the aforementioned object the leaf hinge part is designed - as described hereinbefore.
Finally the invention concerns a process for the production of a leaf hinge part as described hereinbefore. To attain the aforementioned object the support part is produced from a steel sheet by two mutually oppositely disposed edges of the support part being at least portion-wise bent over to form mutually parallel guide limbs, wherein the adjustment part is inserted between the guide limbs and guided displaceably there.
In practice at least one securing tongue portion with screw openings can be formed by bending on an edge of the support part, that is at a right angle to the guide limbs. Securing tongue portions of that kind were also formed in the state of the art by die casting on the support parts, on the side which bears against the leaf. Preferably there are two securing tongue portions of the screw openings, which bear against an edge surface of the leaf and can be screwed thereto.
In practice the support part consisting of steel sheet can be produced exclusively by cutting and bending. In addition the adjustment part can be produced from a steel sheet by that sheet being cut and bent in particular to form the pin receiving means.
An embodiment of the invention is described hereinafter with reference to the accompanying drawings in which:

Figure 1 shows a perspective view of a door hinge with a leaf hinge part according to the invention without cover,
Figure 2 shows a front view of the door hinge of Figure 1,
Figure 3 shows a rear view of the door hinge of Figure 1,
Figure 4 shows a plan view of the door hinge of Figures 1 to 3,
Figure 5 shows a view from below of the adjustable leaf hinge part of the door hinge of Figures 1 to 3 without cover,
Figure 6 shows a front view of the leaf hinge part of Figure 5,
Figure 7 shows a side view of the leaf hinge part of Figure 6,
Figure 8 shows a view of the leaf hinge part, in section along section line A-A in Figure 6,
Figure 9 shows a view of the leaf hinge part, in section along section line B-B in Figure 6,
Figure 10 shows a perspective front view of a door hinge as shown in Figures 1 to 4 with cover,
Figure 11 shows a rear view of the door hinge with cover as shown in Figure 10,
Figure 12 shows a perspective front view of the leaf hinge part with cover,
Figure 13 shows a perspective rear view of the leaf hinge part shown in Figure 12,
Figures 14 and 15 show perspective front and rear views of the cover of the leaf hinge part, and
Figures 16, 17 and 18 show an additional arrangement for the adjustment of the contact pressure.

The door hinge shown in Figures 1 to 4 comprises a leaf hinge part 1 and a frame hinge part 2. The frame hinge part 2 is produced in conventional manner by a zinc die casting process and is provided for being screwed to the frame member of a door frame or window frame. It can be seen in particular from Figures 3 and 4 that the rear side 5 of the frame hinge part 2 is provided with two carrier pins 6 which can be inserted into suitable securing bores on the door frame. The frame hinge part 2 also has two screw holes 7 through which it is possible to pass securing screws (not shown) with which the frame hinge part 2 is screwed fast to the door or window frame.
The leaf hinge part 11 is adapted to be adjustable. It substantially comprises a support part 3 made from steel sheet and an adjustment part 4 also made from steel sheet.
The individual structural elements and components of the leaf hinge part 1 can be seen in particular from Figures 5 to 9.
The support part 3 comprises a substantially rectangular steel sheet with a plurality of right-angled bends in the edge regions. The upper and lower edges of the support part 3 are bent over at a right angle and form mutually parallel guide limbs 8, 9. The upper edge and the lower edge are bent over double in the front portion of the support part 3. The first bend forms a short guide limb 8', 9' which extends substantially perpendicularly to the main plane of the support part 3 and is aligned with the adjoining guide limb 8 and 9 respectively.
The second bend forms a respective holding tongue 10, 11 which adjoins the short guide limb 8', 9' and which extends at a spacing relative to the main plane of the support part 3 and parallel thereto.
In the region of the front edge of the support part 3, that extends between the upper and lower edges, two securing tongue portions 12, 13 are bent over rearwardly at a right angle to the main plane of the support part, and extend at a right angle to that main plane. Each of the securing tongue portions 12, 13 has a screw opening 14, 15. Securing screws (not shown) can be fitted through the screw openings 14, 15. Those securing screws permit the support part 3 to be screwed fast to the end of a leaf (not shown) of a door or a leaf or casement of a window. For fixing to the leaf, in particular to a leaf frame of a plastic material window, the rear side of the support part 3, that is visible in Figure 3, is placed against the front side of the leaf (not shown) and screwed in position there. In that case the securing tongue portions 12, 13 bear against an edge surface of the leaf and are also screwed in position there. It is to be noted that embodiments without securing tongue portions 12, 13 are also manufactured.
The adjustment part 4 is also produced from a substantially rectangular steel sheet. It is inserted between the guide limbs 8, 8' and 9, 9' of the support part 3. The height of the adjustment part 4, that is to say its dimension in a vertical direction, corresponds, with a slight clearance, to the spacing between the upper guide limbs 8, 8' and the lower guide limbs 9, 9'. The upper guide limbs 8, 8' and the lower guide limbs 9, 9' are parallel to each other so that their mutually facing inside surfaces bear against the outer edges of the adjustment part 4. In that way the adjustment part 4 is fixed in a vertical direction between the guide limbs 8, 8' and 9, 9' of the support part 3, in which case it is displaceable in a horizontal direction.
It is to be noted that the drawings only represent a practical embodiment of the guide means for guiding the adjustment part 4 on the support part 3 of steel sheet. It is also possible for the structure to be modified in such a way that for example the edge portions of the adjustment part are bent over and form guide limbs which bear against the edge surfaces of the support part which in this alternative is flat. The projections which form the guide surfaces can also be formed in a different fashion than by bending over the edge portions. For example sheet metal strips can be pressed out of the sheet material of the adjustment part or the support part and bear against a guide surface of the respective other part.
In the embodiment illustrated in the drawings, the holding tongues 10, 11 prevent the adjustment part 4 which is inserted between the guide limbs 8, 8' and 9, 9' from undesirably dropping out of the support part 3, in the absence of fixing thereof.
The adjustment part 4 can be screwed fast to the support part 3 by means of two fixing screws 16, 17. The fixing screws 16, 17 pass through slots 18, 19 in the adjustment part 4. Their male screwthreads are screwed to two female screwthreads 20, 21 (see Figure 8) provided in the plate-shaped main portion of the support part 3.
It can be seen in particular from Figure 8 that the fixing screws 16, 17 each have a respective pin portion 22, 23 adjoining the screwthread portion of the respective fixing screw 16, 17. The pin portions 22, 23 can be free of a screwthread, but they perform their function even if they have a male screwthread. In that case the screwthread extends to the free end of the screw shank. In the drawings the pin portions 22, 23 are provided with a screwthread. The diameter thereof substantially corresponds to the core diameter of the screwthread portion of the fixing screw 16, 17. The pin portions 22, 23 project beyond the rear side of the support part 3, that forms the contact surface for the support part 3 against a door or window leaf or casement. The pin portions 22, 23 can be received in suitable receiving bores in the front leaf surface, that is to say the leaf surface facing in the opening direction, in order to fix the leaf hinge part 1 in respect of height and to carry a part of the load of the leaf hinge part 1. In earlier design configurations in accordance with the state of the art, similar carrier pins have been formed on the rear side of the support part 3 in the casting process.
The adjustment part 4 is fixed with respect to the support part 3 in its displacement direction (towards the right or the left in Figure 6) by screwing the fixing screws 16, 17 tight.
Displacement in the horizontal direction is effected by means of an eccentric adjustment drive. An eccentric 24 is accommodated rotatably in an opening 25 in the adjustment part 4, the opening 25 being of a round circular shape in the present case. An eccentric pin 26 which is also round is shaped at the rear side of the round eccentric 24 (see in particular Figure 3), the eccentric pin 26 being arranged eccentrically relative to the eccentric 24. The eccentric pin 26 is guided in a slot 27 in the support part 3. Displacement of the adjustment part 4 relative to the support part 3 in the horizontal direction is produced by rotation of the eccentric 24 when the fixing screws 16, 17 are loosened.
In addition to the fixing screws 16, 17 there are four securing screws 28 which engage through both the adjustment part 4 and also the support part 3. As can be seen from Figure 3 the securing screws 28 pass through four round screw holes 29 in the support part 3, with a small clearance.
The adjustment part 4 has two mutually parallel slots, namely an upper slot 30 and a lower slot 31. Figure 6 in which the securing screws 28 are not shown shows the mutually aligned arrangement of the screw holes 39 and the slots 30, 31. The eccentric 24 is disposed between the two slots 30, 31 in the right-hand half of the adjustment part 4. Thus both the opening 25 for the eccentric 24 and also the slots 30, 31 for the securing screws 28 can be arranged at the greatest possible spacing from the fixing screws 16, 17. That spacing permits elastic or plastic bending of the steel sheet between the securing screws 28 and the fixing screws 16, 17.
A pressure screw 32 provided with a head is screwed into a screwthread in the adjustment part 4. The pressure screw 32 is disposed between the two fixing screws 16, 17 and forms a pressure element. That pressure element 32 presses against the contact surface of the support part 3, against which the adjustment part 4 bears. That pressure screw 32 acting as the pressure element permits adjustment of the spacing between the adjustment part 4 and the support part 3 in the plane perpendicularly to their main direction. That adjustment in spacing causes a displacement of a receiving means 33, formed on the adjustment part 4, for the hinge pin. Accordingly the spacing of the pin receiving means 33 from the plane of the frame can be adjusted by the pressure screw 32. That provides for adjustment of the contact pressure of the seal of the door or window leaf against the oppositely disposed surface of the frame. As described hereinafter the contact pressure can be additionally adjusted by means of an eccentric hinge pin 41.
The receiving means 33 for the hinge pin is formed in the following manner in the steel sheet of the adjustment part 4. The steel sheet of the adjustment part 4 is bent out of the main plane of the adjustment part 4, thus affording an offset or cranked configuration. The offset is such that the entire pin receiving means 33 bears against the support part 3 on one side, namely the side of the contact surface of the adjustment part 4, that is remote from the leaf. Thus the geometrical arrangements of the contact surfaces between the adjustment part and the support part as well as the configuration of the axis of the hinge pin substantially correspond to the geometrical arrangements of known door hinges. A cover cap 34 makes it possible to achieve an aesthetically attractive visible configuration for the leaf hinge part 1, as can be seen from Figures 10 to 15. In that respect the cover cap 34 covers over both the mutually opposite regions of the adjustment part 4 and the support part 3 and also the hinge pin receiving means 33.
The cover cap 34 (see in particular Figures 14 and 15) can be produced by a die casting or injection moulding process either from plastic material or from metal (in particular zinc). In that case the region of the cover cap, that is above the pin receiving means, is formed by a lid 35 which can be fixed to the cover cap 34. The cover cap 34 is open beneath the hinge pin receiving means 33 so that the hinge pin can project therethrough. By virtue of the lid 35, the cover cap can be used both in relation to left-side mounting and also right-side mounting of the door leaf or window leaf or casement. The lid 35 can either be formed in one piece with the remainder of the cover cap 34 in the casting or moulding process or it can be produced separately from the cover cap 34. In the former case the lid 35 can be separated from the cover cap 34 by a desired-rupture line. Preferably lids of that kind are provided both at the top and also at the bottom in the region of the pin receiving means 33, in which case - depending on whether the leaf is mounted at the left or at the right - one of the lids is removed by being broken out. It is also possible for one of the lids to be cut out.
In the case of a separately manufactured lid 35 it has to be fastened to the cover cap 34 after assembly above the hinge pin receiving means 35.
The cover cap 34 also has a female screwthread 36. The cover cap 34 can be screwed fast to the adjustment part 4 of the leaf hinge part 1 by a securing screw 37 (Figures 11 and 13).
In particular in Figure 15, a holding projection 38 is provided at a side wall of the cover cap 34. The holding projection 38 bears against the wall of the cover cap, which is opposite to the receiving means for the hinge pin. The holding projection 38 is pushed behind the free end of the adjustment part 4 for securing the cover cap 34 to the leaf hinge part 1. The cylindrically curved portion of the cover cap 34 is then pushed over the hinge pin receiving means 33. In that situation the cover cap 34 latches on the adjustment part 4 of the leaf hinge part 1. Holding projections 39 and 40 on the upper and lower walls of the cover cap 34 engage behind portions of the adjustment part 4 and the support part 3 respectively of the leaf hinge part 1. It is to be noted that the holding projections 38, 39, 40 do not necessarily have to be arranged as shown in Figure 15. It is also possible to envisage other locations for the holding projections.
Figure 13 once again shows the mutually co-operating elements with which the leaf hinge part 1 is secured to the leaf (not shown) of a plastic material window. The rear side of the leaf hinge part 1, which is visible in Figure 13, is placed against the front side of the leaf, in which case the pin portions 22, 23 project into receiving bores in the front side of the leaf. The securing screws 28 are screwed in the leaf. When dealing with a leaf comprising a frame of plastic profile members, the securing screws 28 generally engage into a metallic reinforcing element of the plastic profile member. The securing tongue portions 12, 13 bear against the end face or edge face of the leaf and are also screwed in position there.
Figures 16, 17 and 18 show an additional arrangement for adjustment of the contact pressure with which the leaf is pressed against the frame. As described hereinbefore that adjustment which, when the leaf is closed, adjusts the position of the leaf perpendicularly to the plane of the leaf, is possible on the one hand by means of the pressure screw 32. It can be seen in particular from Figure 16 that the hinge pin 41 is additionally of an eccentric configuration. In Figure 16, the upper portion 47 of the hinge pin 41 is displaced towards the left with respect to its lower portion 48. The upper portion 47 of the hinge pin 41 can be inserted into the hinge pin receiving means 33 of the leaf hinge part 1.
Provided at the upper head end of the hinge pin 41 is an opening 42 for a hexagon wrench which is used for turning the hinge pin 41. The hinge pin 41 has an annular collar 45, on which the lower end 43 of the hinge pin receiving means 33 rests. The lower end 43 has recesses 44 (see Figure 6) and the annular collar 45 has a projection 46 which is inserted into a respective recess 44 in given angular positions. The present embodiment has four recesses 44 distributed over its periphery. In that way, four relative positions are defined between the hinge pin 41 and the hinge pin receiving means 33, in which those parts are in mutually latching relationship. By virtue of the eccentricity the upper portion 47 of the hinge pin 41, that projects into the hinge pin receiving means 33, is in a different position relative to the axis of rotation of the lower portion 48 of the hinge pin 41. That provides for adjustments in respect of the contact pressure, which is added to the adjustment by means of the pressure screw 32.
The following features may be advantageous individually and in combination with each other in relation to the leaf hinge part 1 according to the invention:

a plurality of projections can have a plurality of mutually parallel guide surfaces at the two parts 3, 4 of the leaf hinge part 1, which co-operate with a plurality of mutually complementary surfaces of the respective other part 4 and 3;
if the receiving means 33, arranged on the adjustment part 4, for the hinge pin, is in the form of an eye bent out of the steel sheet, the portion of the adjustment part 4, that adjoins the eye, can extend inclinedly relative to the main plane of the adjustment part 4;
the adjustment drive can include an eccentric 24 having a cylindrical portion held rotatably in an opening 25 in the adjustment part 4 and a cylindrical eccentric pin 27 which is eccentric in relation to the cylindrical part and which engages into a slot in the support part 3;
the adjustment part 4 can be secured to the support part 3 by means of at least one fixing screw 16, 17 and in that case the fixing screw 16, 17 can pass through a slot 18, 19, parallel to the edge of the adjustment part 4, in the adjustment part 4;
if the fixing screw 16, 17 has a pin portion 22, 23 which adjoins the screwthread of the fixing screw 16, 17 and projects out of the support part 3 on the side remote from the adjustment part 4, that pin portion 22, 23 can be free of a screwthread; it is however also possible for the screwthread to extend over the entire length of the pin or shank of the fixing screw 16, 17 and for the pin portion provided with the screwthread to project into a suitable receiving bore in the front leaf surface; and
optionally at least one securing tongue portion 12, 13 with a screw opening 14, 15 can be arranged at the edge of the support part 3, that is at a right angle to the guide limbs 8, 8', 9, 9', which securing tongue portion extends at a right angle to the contact surface of the support part 3 and is formed by bending.

A process for the production of a leaf hinge part 1 according to the invention can include the following features individually or in combination:

the support part 3 can be produced from a steel sheet by two mutually oppositely disposed edges of the support part 3 being bent over at least portion-wise to form mutually parallel guide limbs 8, 8', 9, 9' and the adjustment part 4 being inserted displaceably between the guide limbs 8, 8', 9, 9';
at least one securing tongue portion 12, 13 with a screw opening 14, 15 can be formed by bending at an edge of the support part 3, that is at a right angle to the guide limbs 8, 8', 9, 9';
the support part 3 can be produced exclusively by cutting and bending; and
the adjustment part 4 can also comprise a steel sheet and can be produced exclusively by cutting and bending.

List of references

1: leaf hinge part
2: frame hinge part
3: support part
4: adjustment part
5: rear side
6: carrier pin
7: screw hole
8, 8': guide limb
9, 9': guide limb
10: holding tongue
11: holding tongue
12: securing tongue portion
13: securing tongue portion
14: screw opening
15: screw opening
16: fixing screw
17: fixing screw
18: slot
19: slot
20: female screwthread
21: female screwthread
22: pin portion
23: pin portion
24: eccentric
25: opening
26: eccentric pin
27: slot
28: securing screw
29: screw hole
30: upper slot or screw hole
31: lower slot or screw hole
32: pressure element, pressure screw
33: receiving means for the hinge pin
34: cover cap
35: lid
36: female screwthread
37: securing screw
38: holding projection
39: holding projection
40: holding projection
41: hinge pin
42: opening
43: lower end
44: recess
45: annular collar
46: projection

Claims

An adjustable leaf hinge part (1) of a hinge for doors or windows, comprising a support part (3) to be secured to a leaf and which bears against the front side of the leaf, and an adjustment part (4) having a receiving means (33) for a hinge pin, wherein the adjustment part (4) is guided displaceably on the support part (3) in a horizontal adjustment direction and can be fixed by means of at least one screw (16, 17, 28), characterised in that at least the mutually co-operating portions of the support part (3) and the adjustment part (4) comprise flat steel sheets, wherein at least one projection is bent out of the flat sheet of at least one of the two parts (3 or 4) of the leaf hinge part (1), which projection forms at least one guide surface which extends in the adjustment direction and which bears against a guide surface of the other of the two parts (4 or 3) so that the adjustment part (4) is fixed to the support part (3) transversely with respect to the adjustment direction.
A leaf hinge part (1) according to claim 1 characterised in that the support part (3) comprises a steel sheet, of which two mutually oppositely disposed edges are bent over at least portion-wise and form mutually parallel guide limbs (8, 8', 9, 9'), between which the adjustment part (4) is displaceably held.
A leaf hinge part (1) according to claim 2 characterised in that the receiving means (33) arranged on the adjustment part (4) for the hinge pin is in the form of an eye bent out of the steel sheet.
A leaf hinge part (1) according to one of the preceding claims characterised in that at least portions of the guide limbs (8', 9') are bent over and form holding tongues (10, 11) extending parallel to the main plane of the support part (3).
A leaf hinge part (1) according to one of the preceding claims characterised in that the adjustment part (4) has a pressure element (32) which pushes the adjustment part (4) away from the support part (3).
A leaf hinge part (1) according to claim 5 characterised in that the pressure element is a pressure screw (32) which can be screwed into a screwthreaded bore in the adjustment part (4) and which presses against the contact surface of the support part (3).
A leaf hinge part (1) according to one of the preceding claims characterised in that the adjustment part (4) is steplessly adjustable by means of an adjustment drive supported against the support part (3) and can be fixed by means of at least one fixing screw (16, 17).
A leaf hinge part (1) according to claim 7 characterised in that the fixing screw (16, 17) is screwed into a female screwthread (20, 21) in the support part (3).
A leaf hinge part (1) according to one of claims 7 and 8 characterised in that the fixing screw (16, 17) has a pin portion (22, 23) which adjoins the screwthread of the fixing screw (16) and projects out of the support part (3) on the side remote from the adjustment part (4).
A leaf hinge part (1) according to one of the preceding claims characterised in that the adjustment part (4) and the support part (3) can be secured to a component, in particular to a leaf of a door or a window, by means of common securing screws (28) which pass through screw holes (30, 31) in the adjustment part (4) and screw holes (29) in the support part (3).
A leaf hinge part (1) according to claim 10 characterised in that the screw holes in the adjustment part (4) are in the form of slots (30, 31).
A leaf hinge part (1) according to claim 10 or claim 11 in each case in conjunction with claim 9 characterised in that the adjustment part (4) has at least one screw hole (30) in its upper half and a screw hole (31) in its lower half and the opening (25) in the adjustment part (4) for the eccentric (24) is arranged between the screw hole (30) in the upper half and the screw hole (31) in the lower half.
A leaf hinge part (1) according to one of the preceding claims characterised in that the support part (3) and the adjustment part (4) are covered over together with the receiving means (33) for the hinge pin by a cover cap (34).
A leaf hinge part (1) according to claim 13 characterised in that the cover cap (34) has at least one of the following features:
- it is made of plastic material;

- it is made of metal;

- it can be screwed fast to the adjustment part (4);

- it is latchable to the adjustment part (4).
A flap hinge comprising a frame hinge part (2) for fixing to the frame and a leaf hinge part (1) for fixing to the leaf and which is hingedly connected to the frame hinge part (2), characterised in that the leaf hinge part (1) is designed according to one of the preceding claims.