DE29809448U1 - Concealed hinge - Google Patents

Description

Dieter Fischer 15741 Motzen

13 May 1998

LIH48.G1

Disappearing hinge

18 pages description

6 pages with 21 claims

1 page summary

13 pages of drawings

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Description

The invention relates to a disappearing hinge according to the arranged door hinge has the advantage that, on the one hand, it enables doors and windows to be opened and closed without the individual parts of the hinge being visually visible on the corresponding external, i.e. visible, surface of the door or window. On the other hand, by positioning the preamble of claim 1.

Disappearing hinges provide increased protection against burglary due to the concealed hinge of the door.

From DE 41 37 050 A1 a disappearing hinge for a door is known in which both the frame and the door frame connected to the frame by the hinge elements are designed as a box profile.

The known concealed hinge has a hook-shaped hinge bracket as the first hinge element, the foot of which can be screwed to the door frame profile using a separate holding part that is positioned inside the profile. A pin is provided on the holding part required for screwing the hinge bracket foot, which must be pushed from the interior of the door frame profile through the profile wall and inserted into a corresponding hole in the hinge bracket foot in order to be able to screw it in.

The second hinge element of the concealed hinge is designed as a bracket with a bearing bush into which a bearing pin is inserted that fixes the free end of the hinge bracket within the frame profile. The bracket for the hinge bracket is attached within the frame profile.

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arranged so that the axis of rotation of the hinge bracket extends within the profile and essentially parallel to the axis of the frame profile.

The bracket with the bearing pin for the hinge bracket is installed and fastened from the side of the frame profile which faces away from the door frame when the door is closed.

To do this, recesses must be machined into two parallel outer surfaces of the frame profile in order to be able to place the bracket in the frame profile and guide the hinge bracket outwards. This leads to an undesirable weakening of the profile and to an increase in assembly costs.

The known solution has the disadvantage that it is difficult to position the required individual parts correctly both when installing the hinge bracket foot on the door frame profile and when installing the bracket within the frame profile. In addition, with the proposed installation method, it is difficult to ensure secure fastening in a way that is adequate to withstand the high load on the hinge when opening and closing the door, so that malfunctions of the hinge cannot be ruled out. Furthermore, it is impossible to remove the hinge later.

Based on the deficiencies of the prior art, the invention is therefore based on the task of specifying a concealed hinge of the type mentioned at the beginning, which - essentially independent of the dimensions of the profile used - can be easily installed and safely

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It is also an object of the invention to provide a method for producing mounting parts with which the mounting can be easily adapted to the dimensions of differently designed profiles.

The problem is solved by the features specified in the characterizing part of claims 1 and 18.

The invention includes the realization that simplifications in the assembly of a technical device, for example a fitting or a hinge for doors or windows, as well as the reduction of the required assembly time are advantageously possible if the fastening points for the individual parts of the device are easily accessible during assembly and the handling of the individual parts to be assembled at the assembly point is restricted as little as possible.

Furthermore, advantages can be achieved when manufacturing a door hinge if the individual parts are designed as part of a modular system. The individual parts have different peripheral dimensions, for example different widths, but are provided with the same connecting and fastening elements in the form of holes, recesses and/or openings arranged in a central area, so that the required hinge can be assembled to measure to suit the dimensions of a specific leaf or frame profile.

According to the preferred embodiment of the invention, the concealed hinge has a mounting system,

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which is designed to be inserted into the frame or casing of the movable sash of a door or window on the rebate side.

This makes it easy and convenient to install the hinge on an already installed frame or on a finished door or window sash. Repairs or replacement of wearing parts on the concealed hinge can also be carried out easily.

According to the preferred embodiment of the invention, the mounting system has two hinge tabs that extend essentially parallel to one another and are essentially identical, between which a hinge bracket is pivotably arranged. The hinge tabs are connected by a bearing pin that simultaneously penetrates the hinge bracket, the longitudinal axis of which forms the pivot axis of the hinge bracket that extends within the profile.

The hinge bracket is hook-shaped and is attached to the counterpart of the frame or sash of the door or window with its free end protruding from the mounting system. The hinge bracket preferably has a substantially rectangular cross-section and is made from a flat material or is designed as a cast part.

According to a favorable variant of the invention, the hinge bracket is composed of several hook-shaped sheet metal strips, which - with their broad sides lying against each other - are connected to each other on the narrow sides, preferably by

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Welding. A hinge bracket designed in this way has a particularly high mechanical load capacity.

The rebate-side end of the hinge flap is connected by a sleeve with a recess through which the hinge bracket moves when the door or window sash is pivoted to open or close the door or window.

To attach the bracket, a hinge recess is incorporated into the respective profile on the fold side. After inserting the bracket system into the hinge recess, the ends of the angled hinge tabs facing away from the fold side of the profile can be fixed, preferably by screwing, to a wall extending parallel to the fold side inside the profile. The sleeve is attached to the hinge tabs and closes the hinge recess on the fold side.

According to another advantageous embodiment of the invention, the mounting system has flat cuboids as hinge tabs, between which the hinge bracket is pivotably connected by means of a pin connecting the hinge tabs. The sleeve that closes the hinge gap on the rebate side is connected to the hinge tabs on the one hand and is attached to the frame on the other.

According to an additional development of the invention, the mounting system is provided with stop means which limit the pivoting movement of the hinge bracket when opening or closing the door or window. The stop means is a parallel to the pivot axis of the

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A bolt extending from the hinge bracket is provided, which penetrates the hinge bracket and protrudes from it on both sides. The ends of the bolt, which protrude essentially the same distance from the hinge bracket, engage in a circular groove worked into the hinge flap, where further movement of the bolt ends is blocked when the end of the groove is reached, i.e. when a certain opening angle of the inward-opening door is reached.

According to an advantageous variant of the invention, a stop is provided in the mounting system, which mechanically limits the opening angle of the door or window that opens outwards. This stop is preferably designed as a straight prism with an essentially trapezoidal cross-sectional area, which extends parallel to the pivot axis of the hinge bracket between the hinge flaps and is attached to them by a screw connection. The stop is made of an elastic plastic and is arranged in the area encompassed by the hinge bracket.

According to an additional variant of the invention, a housing, preferably made of metal, is provided for the concealed hinge, which closes the hinge recess within the casing or frame profile, at least including the hinge bracket, in order to protect the mounting system from influences that impair the function of the concealed hinge.

According to a further advantageous embodiment of the invention, the support bracket is designed to be variable in shape, preferably articulated, in its base area. The joint is under mechanical prestress and is only released when a force is applied in the

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The door can be moved in relation to the force required to open or close the door. This makes it possible to increase the opening angle of a door to 180°, for example in the case of the double doors of a hall.

According to an additional variant of the invention, the holder is designed as a single part, which is completed by inserting the hinge bracket together with the bearing pin forming the pivot axis and is inserted into the band recess of the profile.

Since a large number of different box profiles or solid profile materials are used in door and window construction, a method is proposed for producing a hinge flap and a faceplate for a concealed hinge as described above, whereby the hinge flap and faceplate are produced in a first process step as semi-finished products by metal casting or as extruded profiles of various formats and the semi-finished products are provided in a subsequent process step by shaping and/or machining with all the holes, recesses and/or openings required for the assembly and operation of the hinge in the central area of the semi-finished product body.

This makes it possible to adapt the size of the hinge tabs or the faceplate or a one-piece bracket with a hinge tab and a faceplate to the width or depth of different frame or casing profiles with relatively little technological effort in the manufacture of the individual parts.

According to the preferred embodiment of the manufacturing method for a band flap, a slip or a

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For the essentially one-piece holder, a casting mould or a model for the casting mould is used, the volume of which can be varied.

According to the invention, the volume variation - starting from a standard size for a cast part containing all essential functional elements - is preferably carried out in one direction of extension in order to enable the casting mold or the casting model to be adapted without any special effort for the different sizes of the sleeve and hinge flap in accordance with the staggered dimensions, in particular the width dimension, of box profiles made of aluminum, plastic or steel or of solid profiles made of wood.

The volume variation is achieved by inserting filler bodies into the mold or by attaching or removing fitting bodies to a base body, preferably to its peripheral sections, to produce a mold.

According to a variant of the invention, it is advantageous if a fitting body set is used. The casting model can be adapted to the requirements particularly easily if, according to a favorable further development of the invention, fitting bodies are used which can be connected to a base body of the casting model and to one another by means of a plug connection.

Other advantageous developments of the invention are characterized in the subclaims or are presented in more detail below together with the description of the preferred embodiment of the invention using the figures. They show:

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Figure 1 shows a preferred embodiment of the invention in a section through the frame and door leaf of a closed glass door along the line A...A according to Figure 3,

Figure 2 shows the embodiment of the invention shown in Figure 1 with the door open in a section along the line B...B according to Figure 3,

Figure 3 is a partial sectional view of the embodiment of the invention shown in Figures 1 and 2,

Figures 4a to 4c show a first individual part of the disappearing hinge shown in Figures 1 and 2 in different views,

Figures 5a and 5b show a second individual part of the disappearing hinge shown in Figures 1 and 2 in front and side view,

Figures 6a and 6b show another individual part of the disappearing hinge shown in Figures 1 and 2 in front and side view,

Figure 7 shows another advantageous embodiment of the invention in a section through the frame and door leaf of a closed glass door along the line C...C according to Figure 9,

Figure 8 shows the embodiment of the invention shown in Figure 7 with the door open, showing a section through the frame and door leaf along the line D...D according to Figure 9,

Figure 9 is a partial sectional view of the embodiment of the invention shown in Figures 7 and 8,

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Figures 10a and 10b show a first individual part of the disappearing hinge shown in Figures 7 and 8 in different views,

Figures 11a and 11b show a second individual part of the disappearing hinge shown in Figures 7 and 8 in front and side view,

Figures 12a and 12b show another individual part of the disappearing hinge shown in Figures 7 and 8 in front and side view, as well as

Figure 13 shows a variable casting model for a hinge component in perspective view.

For the glass door 1 that can be opened outwards, shown in Figures 1 and 2 in the closed or opened state and as sectional views in different planes, several similarly designed concealed hinges 2 are provided, by means of which the frame 3 of the door leaf 4 is pivotably connected to the box profile 5 of the casing 6.

Figure 3 shows the concealed hinge 2 in the installed position when viewed from the rebate side and the hinge bracket 7 shown in section.

The disappearing hinge 2 has a hook-shaped hinge bracket 7 with a rectangular cross-section, which is made of a strip material.

The hinge bracket 7 is fixed with its first end section 7.1, which is designed as a foot, to the rebate-side wall of the

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Aluminium frame profile 3 using press-in bushings (not shown).

The second end section 7.2 of the hinge bracket 7 is fixed by means of a bracket 8 in a hinge recess 5.1 within the aluminum box profile 5 of the frame 6. The bracket 8 has two hinge tabs 9 made of cast metal that extend parallel to one another and are firmly connected to one another by a cylindrical pin 10 and the stop 16. The pin 10, the ends of which are each inserted into a bushing 9.3 of the hinge tab 9 and the axis of which extends parallel to the longitudinal axis of the box profile 5, simultaneously forms the pivot axis of the hinge bracket 7 that can move between the hinge tabs 9.

The section of the concealed hinge 2 that protrudes into the hinge recess 5.1 is covered with a housing 11 in order to protect the hinge parts within the frame 6 from harmful influences.

The angle-shaped hinge tabs 9, the structure of which is shown in Figures 4a to 4c in two side views and in plan view, are each fastened with two screws 12 to the profile wall 5.2 with the angle leg 9.1 using the holes 9.4.

The cover 13 shown in Figures 5a and 5b is made of an extruded profile, the cross-sectional profile of which is adapted to the dimensions of the rebate-side wall of the frame profile 5. The cover is attached by means of screws 15 to the angle leg 9.2 of the two hinge flaps 9 using the threaded holes 9.5 in the hinge flaps and the

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The sleeve is screwed into the holes 13.2 provided for the sleeve. The sleeve 13, in conjunction with a plastic filler 14, closes the hinge clearance 5.1 on the fold side. The sleeve 13 has sufficient flexural rigidity due to its profiling despite its relatively low wall thickness and thus contributes to the stability of the bracket 8.

The recess 13.1 between the holes 13.2 arranged in pairs is intended for the unhindered passage of the hinge bracket 7 through the sleeve 13 and is accordingly rectangular in shape.

The 5 wall elements 5.3 and the filler 14 provided in the frame profile ensure that no thermal bridges are created in the frame 6.

In order to limit the opening of the door provided with a glass pane 18 at a maximum opening angle of 110° without causing any damage, a stop 16 is provided in the disappearing hinge 2. The stop 16, made of plastic, extends into the free space between the two hinge flaps 9 encompassed by the hinge bracket and is connected to the respective angle legs 9.2 of the hinge flaps by means of screws 17 lying on the same axis.

The stop 16 is designed as a straight prism with a trapezoidal cross-section, the longitudinal axis of which extends parallel to the axis of rotation of the concealed hinge 2, and blocks further movement of the hinge bracket 7 when the intended opening angle of the outward-opening glass door 1 is reached. The hinge bracket 7 rests with its elongated end section 7.2 - under central

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ration of the stop 16 - over its entire surface on its outer wall.

According to Figures 6a and 6b, the hook-shaped hinge bracket 7 has a foot 7.1 that can be screwed to the frame 3 of the door leaf 4 and an extended end 7.2 that is connected to the bracket 8 via the cylindrical pin 10. The foot 7.1 and the extended end 7.2 are connected to one another by a circular bracket piece. A flange 7.3 with holes 7.4 for the corresponding fastening screws is provided on the foot 7.1 of the hinge bracket 7 and the extended end 7.2 has a hole 7.5 through which the pin 10 is inserted.

The hinge bracket 7 is made up of several layers. It has five 3mm thick steel sheet strips 7.6, which lie against one another with their broad sides and are connected to one another by welding on the narrow sides. This means that the hinge bracket 7 can withstand greater mechanical loads than a hinge bracket made from solid material with the same cross-section.

For the inwardly opening glass door 20 shown in Figures 7 and 8 in the closed or open state and as a view of sections taken in two different planes, disappearing hinges 22 are provided, by means of which the frame 23 of the door leaf 24 is pivotally connected to the box profile 25 of the casing 26.

Figure 9 shows the concealed hinge 22 in the installed position when viewed from the rebate side and the hinge bracket 27 shown in section.

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The disappearing hinge 22 has a hook-shaped hinge bracket 27 with a rectangular cross-section, which is made in one piece from a strip material.

The shape of the hinge bracket 27, which is screwed with its foot area 27.1 to the rebate-side wall of the aluminum frame profile 23 using rivet nuts (not shown), corresponds essentially to the design shown in Figures 6a and 6b. The second end section 27.2 of the hinge bracket 27 is fixed by means of a bracket 28 in the hinge recess 25.1 within the aluminum box profile 25 of the frame 26. The bracket 28 has two hinge tabs 29 made of cast metal that extend parallel to one another and are connected to one another by a cylindrical pin 30 made of polished V2A steel. The pin 30, the ends of which are each inserted into a bushing 29.3 of the hinge tabs 29 and whose axis extends parallel to the longitudinal axis of the box profile 25, simultaneously forms the pivot axis of the hinge bracket 27 which is movable between the hinge tabs 29.

In order to limit the door movement when the maximum opening angle is reached for safety reasons, a bolt 39 is provided which extends parallel to the pin 30 and is inserted into the elongated second end section 27.2 of the hinge bracket 27 and protrudes from it on both sides with the same length. The bolt ends protruding from the hinge bracket 27 each engage in an arcuate guide groove 29.4 machined into the broad side of the hinge tabs 29 arranged mirror-symmetrically to one another, preferably by milling, and block the opening movement of the door 20 when the bolt ends have reached the end of the groove.

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The section of the concealed hinge 22 that protrudes into the hinge recess 25.1 is covered with a housing 31 in order to protect the hinge parts within the frame 26 from influences that could impair the hinge function.

The hinge tabs 29, which are designed as flat cuboids and are shown in side view and top view in Figures 10a and 10b, are each connected to the sleeve 32 by means of a screw 33 using the bore 32.4 provided in the sleeve.

The hinge tabs 29 have two threaded holes 29.1 and 29.2 on the narrow side facing the fold and a blind hole 29.3 on the wide side facing each other as well as a guide groove 29.4 that surrounds this blind hole in a semicircle.

The cover 32 shown in Figures 11a and 11b is designed as an aluminum extruded part and has a cross-sectional profile which is adapted in dimensions to the rebate-side wall of the frame profile 25.

The sleeve 32 is fastened to the wall of the frame profile 25 that delimits the rebate-side opening of the hinge recess 25.1 by means of four screws 34, which are guided through holes provided in pairs at its upper and lower ends. The sleeve 32 thus forms the rebate-side connecting link between the hinge tabs and the frame profile in the holder 22. At the same time, it closes the hinge recess 25.1 on the rebate side and is laterally stabilized in conjunction with a filler body 40 made of plastic. For this purpose, the filler body 40 is connected to the hinge tabs 29.

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The corresponding screw 35 is screwed into the hole 29.2 of the hinge plate 29.

The sleeve 32 has a high bending stiffness due to its profile and its relatively large wall thickness and thus contributes to the stability of the holder 28. The recess 32.1, which is open on one side, between the mirror-symmetrically arranged holes 32.2 is intended for the unhindered passage of the hinge bracket 27 through the sleeve 32 and is designed accordingly in a rectangular shape.

The 25 wall elements 25.3 and the filler 40 provided in the frame profile ensure that no thermal bridges arise in the frame 26.

According to Figures 12a and 12b, the hook-shaped hinge bracket 27 - in contrast to the hinge bracket 7 shown in Figures 6a and 6a - has, in addition to the hole 27.4 provided in the extended hinge bracket end 27.2 for receiving the pin 30 forming the axis of rotation, an additional hole 27.5 for the bolt 39, the ends of which protrude from the hinge bracket end 27.2 and slide in the guide groove '29.4 of the hinge tabs 29 of the holder 28 to stabilize the pivoting movement of the hinge bracket 27 when the glass door 20 is opened or closed. The foot 27.1, which can be screwed to the frame 23 of the door leaf 24, has a rectangular flange 27.3 with holes 27.7 for the corresponding fastening screws.

The hinge bracket 27 is constructed in several layers to increase the mechanical load capacity. It has five steel sheet strips 27.6 of 3 mm thickness, which are

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The broad sides lie against each other and the narrow sides are connected by welding.

The casting model 50 shown in Figure 13 for the production of a faceplate shown in Figure 11a as well as the fitting bodies 52 and 53 used to change the model size according to the dimensions of the respective frame profile are made of hardwood or a plastic.

The fitting bodies are part of a set with a large number of fitting bodies with different widths and thicknesses, so that by putting together the base body 51 and one or more fitting bodies 52, 53, a gradual adjustment of the base body of the casting model to a specific frame profile is possible. In order to be able to create the required connection between the individual parts without any special effort, holes 51.1 are provided on the base body 51 and holes 52.1, 53.1 are provided on the fitting bodies 52, 53, as well as dowel pins 52.2, 53.2 that can be inserted into these holes.

In order to form a modular system, hinge tabs (9, 29) and cuffs (13, 32) can be produced which differ in peripheral dimensions, in particular in the width, but are provided with the same connecting and fastening means arranged in a central area in the form of holes (9.3, 9.5, 9.6, 29.1, 29.2, 32.2, 32.3), recesses (13.1, 32.1) and/or openings, for producing a mounting system (8, 28) adapted to the dimensions of a specific sash or frame profile.

The invention is not limited in its implementation to the preferred embodiments given above.

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Rather, a number of variants are conceivable which make use of the solution presented even in fundamentally different designs.

Claims (17)

LIH48.G1 - 20 - Claims 1. Disappearing hinge (2, 22) for connecting a frame made from a box or solid profile of the leaf of a door or window (1, 20) with the associated casing made from a box or solid profile, with a hook-shaped hinge bracket (7, 27) and a holder (8, 28) that can be arranged within the cross-sectional profile of the leaf (4, 24) or the casing (5, 25), which has a bearing pin (10, 30) that fixes the hinge bracket within the holder in such a way that the axis of rotation of the hinge bracket extends within the profile and parallel to its longitudinal axis, characterized in that the holder (8, 28) is a system which can be inserted from the rebate side of the profile into a hinge recess (5.1, 25.1) provided in the rebate side and can be at least partially fastened to the profile rebate - two hinge tabs (9, 29) which are connected to one another by the bearing pin (10, 30) for the hinge bracket (7, 27) and extend parallel to one another and - a sleeve penetrated by the hinge bracket (13, 32) wherein the sleeve on the one hand connects the fold-side ends of the hinge tabs extending inside the respective profile and on the other hand essentially closes the opening cross-section of the hinge clearance (5.1, 25.1). LIH48.G1 - 21 - 2. Disappearing hinge according to claim 1, characterized in that the mounting system (8, 28) extends within the hinge recess essentially from wall to wall over the entire width of the sash or frame profile. 3. Concealed hinge according to claim 1 or 2, characterized in that the pair of hinge tabs (9, 29) and the cover (13, 32) form components of a modular system in which pairs of hinge tabs, covers and hinge brackets with different peripheral dimensions, in particular width dimensions, but with the same connecting and fastening means arranged in a central area in the form of bores (9.3, 9.5, 9.6, 29.1, 29.2, 32.2, 32.3), recesses (13.1, 32.1) and/or openings, are provided for mounting a mounting system (8, 28) adapted to the dimensions of a specific sash or frame profile. 4. Concealed hinge according to claim 1, 2 or 3, characterized in that the hinge tabs (9) of the holder (8) are essentially angular in shape and can be fastened with one angle leg (9.1) to an internal stiffening wall of the profile accessible in the band recess (5.1) and carry the sleeve (13) on the other angle leg (9.2). 5. Concealed hinge according to claim 1, 2 or 3, characterized in that the hinge tabs of the holder (28) are designed as flat cuboids (29) connected to the front side of the cover (32) and the cover is attached to the fold side, LIH48.G1 - 22 - the profile wall delimiting the opening of the clearance (25.1) can be fastened. 6. Disappearing hinge according to one of the preceding claims, characterized in that the hinge tabs (9, 29) are arranged substantially mirror-symmetrically to one another. 7. Concealed hinge according to one of the preceding claims, characterized in that the hinge tab and the cover form a one-piece holder. 8. Disappearing hinge according to one of the preceding claims, characterized in that screw connections are provided for fastening the hinge tabs (9, 29) to the cover (13, 32) and for fastening the mounting system (8, 28) to the profile wall (5.2, 25.2). 9. Disappearing hinge according to claim 4, characterized in that the holder (8) for limiting the opening angle of the door or window has a stop (16) which is arranged within an area encompassed by the hook of the hinge bracket (7). 10. Disappearing hinge according to claim 9, characterized in that the stop (16) connects the hinge tabs (9) of the mounting system (8) and has a longitudinal axis extending parallel to the axis of the bearing pin (10). LIH48.G1 - 23 - 11. Disappearing hinge according to claim 9 or 10, characterized in that the stop is designed as a straight prism (16) with a substantially trapezoidal cross-sectional area. 12. Disappearing hinge according to one of the preceding claims, characterized in that the hinge bracket (7, 27) is made of a flat material or is designed as a cast part and has a substantially rectangular cross-section. 13. Concealed hinge according to claim 12, characterized in that the flat material consists of, preferably five, strips (7.6, 27.6) extending parallel to one another on their broad sides, which are connected to one another at their narrow sides, preferably by welding. 14. Concealed hinge according to claim 12 or 13, characterized in that the hinge bracket (7, 27) is designed to be variable in shape in its base region (27.1) in order to achieve an opening angle of 180° of a door. 15. Disappearing hinge according to one of the preceding claims, characterized by a, preferably metallic, housing (11, 31) which encloses the mounting system located within the casing or frame profile (5, 25). LIH48.G1 - 24 - 16. Disappearing hinge according to one of the preceding claims, characterized in that stop means (29.4, 39) are provided in the holder (28) which limit the pivoting movement of the inwardly opening door (20). 17. Disappearing hinge according to claim 16, characterized in that the hinge bracket (27) has a bolt (39) penetrating it, the projecting ends of which are essentially of equal length each engaging in a circular guide groove (29.4) provided in the hinge tab (29).