EP0043903B1 - Hinge arm with mounting plate - Google Patents

Description

The invention relates to a hinge arm with a mounting plate, which are provided on the one hand with a spring-loaded, at the end of a pivotable lever or bracket arranged locking projection and on the other hand with a locking opening, which by inserting the hinge arm into a guide of the mounting plate and moving in the longitudinal direction in its releasable , snap together locked position, and with a stop that limits the displacement when or after the snap-together of the interlocking parts.

Snap connections for attaching hinge arms to mounting plates which have already been preassembled, for example, on supporting wall abutment parts are already known in various embodiments. They serve the need to be able to assemble furniture parts provided with hinge joints quickly and easily. Usually, it is necessary to screw the hinge arms onto the associated mounting plates, which is simple work, but, for example in the case of doors provided with a plurality of hinge joints, nevertheless requires a cumulative expenditure of time. It should also be taken into account that the hinge arms usually have to be screwed on while holding the door at the same time, which makes the installation work more difficult. Hinge arms locked in place with snap connections to the mounting plates help here.

In a fastening device for hinge arms known from DE-A-25 12 656, a sleeve-shaped receiving part is connected to the supporting wall stop part and is provided with guides for the hinge arm to be inserted, the hinge arm or the sleeve-shaped receiving part having latching openings in one part and spring-loaded latching pins in the other part, which fall into the latch opening when passing over it, are provided. This known snap connection for hinge arms has the disadvantage that play of the locking pins in the locking openings cannot be avoided in principle, so that a disturbing wobble of the parts connected by the hinge joints can occur. Furthermore, it is difficult to design this known snap connection so that the hinge arm can still be aligned after its assembly.

In a hinge arm of the type specified at the outset known from DE-A-25 07 850, a stop is provided so that when the hinge arm is inserted into the guide of the fastening plate it is not necessary to search for a long time for the parts which are locked together to be aligned. This known hinge arm also has the disadvantage that play in the guide and the locking connection cannot be avoided, so that a disturbing wobble is to be feared.

The object of the invention is to provide an easily assembled snap connection for hinge arms with the associated mounting plates of the type specified, which ensures a play-free connection even when the usual manufacturing tolerances are present.

According to the invention, this object is achieved in that the latching projection has a flank with which it is supported on an edge or one side of the latching opening in such a way that the hinge arm or the fastening plate is pressed with a counter-stop constantly against the stop of the other part without play .

Since the flank of the spring-loaded locking projection constantly exerts a thrust on the edge region of the locking opening on which it is supported, the fastening plate and the hinge arm are clamped together so that no play can occur between the two parts. Of course, the flank is to be designed in such a way that it cannot completely immerse into the latching opening and there is a sufficiently long wedge-shaped surface which exerts the thrust.

Appropriately, the distance between the flank of the latching projection and the pivot axis of the lever carrying the lever continuously decreases, starting from its support area on the edge or the side of the latching opening, so that it exerts a constant thrust on the rim area of the latching opening.

According to a preferred embodiment of the invention it is provided that an adjusting screw serving for the joint adjustment is screwed into the hinge arm, which is provided with an annular groove, is guided in this in an elongated hole-shaped guide of the fastening plate and with the flanks of the annular groove the upper and lower edges of the guide spreads. In order to be able to easily insert the groove in the adjusting screw into the slot-shaped guide, it is expediently open on one side.

The guide in the mounting plate expediently consists of longitudinal grooves arranged on both sides thereof, into which the expediently U-shaped hinge arm engages with sliding edges which are angled inward from the ends of its legs.

The stops and counter-stops serving for tensioning can be formed by the groove ends and the end edges of the sliding edges.

According to a further inventive embodiment, it is provided that the sliding edges are guided with play in the grooves and the end regions of the grooves are inclined upwards or downwards to compensate for play. If the sliding edges move into the angled or curved end region of the grooves, since these are straight, they abut the groove flanks, so that the resulting canting compensates for any play.

The lever can be provided with two locking projections on both sides of the center line of the hinge arm.

The slot-shaped guide for the adjusting screw is expediently arranged in the central region of the fastening plate and is open towards the outer end.

According to a preferred embodiment of the invention it is provided that the lever with upward-facing tooth-like projections is mounted on a transverse bolt fastened in the side carriage of the fastening plate and the latching openings are in the form of slots in the web part of the U-shaped hinge arm. The compression spring loading the locking lever can be arranged in a recess in the fastening plate.

Advantageously, a lever provided with a hook-shaped recess is pivotally mounted in a recess of the mounting plate, which holds the locking lever in its pivoted-in position and is provided with an upstanding nose, by means of which it is pivoted into its position releasing the locking lever when the hinge arm is pushed open. In this way, the mounting plate can be prepared for mounting the hinge arm.

According to a further preferred embodiment of the invention it is provided that two locking levers are pivotally mounted about a bolt which is fastened vertically in the fastening plate and engage in lateral slot-shaped locking openings of the hinge arm. The locking levers can be designed with two arms, interact like a pair of pliers, held in their spread position by a screw torsion spring encircling the bearing bolt, which is supported with its legs on the locking levers, and project beyond the fastening plate with their rear ends. To release the latching connection, it is only necessary to compress the rear ends of the latching levers, as a result of which the latching projections emerge from the latching openings.

According to a further preferred embodiment it is provided that the locking lever is mounted about a horizontal cross bolt in the hinge arm and engages with its tooth-like projections in locking openings in the fastening plate.

To enable depth adjustment, the fastening plate is expediently formed in two parts and provided with a longitudinally displaceable plate.

According to a further inventive embodiment, it is provided that the latching projections are formed by two tabs which are angled in a U-shape to the side of the pivotally mounted lever on the mounting plate and which protrude into the guide grooves arranged on the side of the mounting plate such that in their locking position they are behind the rear Grasp the edges of the slide webs of the hinge arm guided in this and fix them between themselves and the stops formed by the groove ends.

According to a further preferred embodiment it is provided that the latching projections are arranged at the ends of the legs of a U-shaped bracket and the legs are guided in guides which cross laterally on the fastening plate and the longitudinal guide grooves for the sliding webs of the hinge arm, that a compression spring between which the Leg of the bracket connecting web and the base of a hole in the mounting plate is clamped and that the locking projections protrude from below into the longitudinally displaceable guide grooves of the mounting plate that they engage in their locking position behind the rear edges of the sliding webs of the hinge arm guided therein define this between themselves and the stops formed by the groove ends. The locking connection between the hinge arm and the mounting plate can be released in a simple manner in that the bracket is pressed down against the force of the compression spring.

Another development provides that the latching projection is formed by angling the lever which is freely pivotably mounted in the hinge arm and is held by a stop at the height of a sleeve-shaped guide of the fastening plate in which a pressure piece which can be pressed in against spring force is guided so that the latching opening in the wall of the sleeve-shaped guide is provided and that the pressure piece presses the bend after inserting the lever into the guide against an edge of the latching opening in such a way that the hinge arm with its counter-stops is pressed against the stops of the fastening plate.

According to an inventive development, it is provided that the hinge arm or the cover or fastening plate are provided with second latching recesses in the region of their rear parts in the direction of insertion. The hook-shaped latching projections of the latching levers initially snap into these latching recesses when the hinge arms are pushed on, so that the furniture parts to be hinged are pre-fixed before being moved into their final position, in which the latching projections snap into the front latching recesses in the direction of insertion, which further facilitates assembly becomes.

Finally, clamping pieces blocking their locking position in their locking position can be placed on the extended actuating parts of the latching levers, by means of which an unintentional or unauthorized loosening of the hinge arms is prevented.

Further features of the invention have been described in the subclaims.

• Figur 1 einen Längsschnitt durch eine erste Ausführungsform eines mit einer Befestigungsplatte verrasteten Scharnierarms,
• Figur 2 einen Längsschnitt durch den mit der Befestigungsplatte verrasteten Scharnierarm nach Figur 1 in durch eine Einstellschraube geänderter Winkelstellung,
• Figur 3 eine Seitenansicht der Befestigungsplatte nach dem Abziehen des Scharnierarms,
• Figur 4 eine Vorderansicht der Befestigungsplatte in ihrer zum Aufschieben des Scharnierarms vorbereiteten Stellung,
• Figur 5 Längsschnitt durch die Befestigungsplatte,
• Figur 6 eine perspektivische Ansicht des Rasthebels,
• Figur 7 eine perspektivische Ansicht des den Rasthebel in seiner Einschubstellung halternden Hebels,
• Figur 8 eine perspektivische Ansicht des Scharnierarms,
• Figur 9 einen Längsschnitt durch eine Befestigungsplatte einer zweiten Ausführungsform,
• Figur 10 eine Vorderansicht der Befestigungsplatte nach Figur 9,
• Figur 11 eine Draufsicht auf die Befestigungsplatte nach Figur 9, teilweise im Schnitt,
• Figur 12 eine perspektivische Ansicht eines Rasthebels,
• Figur 13 eine perspektivische Ansicht der die Rasthebel spreizenden Torsionsschenkelfeder,
• Figur 14 eine perspektivische Ansicht des anderen Rasthebels,
• Figur 15 eine Vorderansicht des Scharnierarms der zweiten Ausführungsform,
• Figur 16 einen Längsschnitt durch den Scharnierarm nach Figur 15,
• Figur 17 eine Draufsicht auf die zweite Ausführungsform des auf die Befestigungsplatte aufgeschobenen Scharnierarms mit eingeschwenkten Rasthebeln, teilweise im Schnitt,
• Figur 18 eine der Figur 17 entsprechende Darstellung des mit der Befestigungsplatte verrasteten Scharnierarms,
• Figur 19a-19h die auseinandergezogenen Einzelteile einer dritten Ausführungsform eines mit einer Befestigungsplatte verrastbaren Scharnierarms in perspektivischer Ansicht,
• Figur 20 einen Längsschnitt durch den Scharnierarm nach Figur 19,
• Figur 21 einen teilweisen Längsschnitt durch die Befestigungsplatte nach Figur 19,
• Figur 22 einen Längsschnitt durch den mit der Befestigungsplatte verrasteten Scharnierarm,
• Figur 23 eine Seitenansicht der Befestigungsplatte einer weiteren Ausführungsform,
• Figur 24 eine Vorderansicht der Befestigungsplatte nach Figur 23,
• Figur 25 einen Schnitt durch die Befestigungsplatte nach Figur 24 längs der Linie III-III,
• Figur 26 eine Unteransicht des auf der Befestigungsplatte schwenkbar gelagerten Hebels,
• Figur 27 eine Vorderansicht des mit der Befestigungsplatte verbindbaren Scharnierarms,
• Figur 28 einen Schnitt durch den Scharnierarm nach Figur 27 längs der Linie VI-VI,
• Figur 29 eine Seitenansicht der Befestigungsplatte mit dieser verbundenem Scharnierarm im Längsschnitt,
• Figur 30 eine Seitenansicht der Befestigungsplatte einer weiteren Ausführungsform,
• Figur 31 einen Schnitt durch die Befestigungsplatte nach Figur 30 längs der Linie IX-IX,
• Figur 32 eine perspektivische Ansicht des mit den Rastvorsprüngen versehenen Bügels,
• Figur 33 eine Vorderansicht des mit der Befestigungsplatte verbindbaren Scharnierarms,
• Figur 34 einen Längsschnitt durch den Scharnierarm nach Figur 33 längs der Linie XII-XII,
• Figur 35 eine Seitenansicht der Befestigungsplatte mit dieser verrastetem Scharnierarm,
• Figur 36 eine Voransicht des Scharnierarms einer weiteren Ausführungsform,
• Figur 37 einen Schnitt durch den Scharnierarm nach Figur 36 längs der Linie XV-XV,
• Figur 38 eine Vorderansicht der Befestigungsplatte der dritten Ausführungsform,
• Figur 39 eine Seitenansicht der Befestigungsplatte nach Figur 38,
• Figur 40 einen Schnitt durch die Befestigungsplatte nach Figur 38 längs der Linie XVIII-XVIII,
• Figur 41 einen Schnitt durch den mit der Befestigungsplatte verrasteten Scharnierarm,
• Figur 42 einen Längsschnitt durch einen Scharnierarm mit auf den in diesem schwenkbar gelagerten Rasthebel teilweise aufgeschobenen Klemmstück,
• Figur 43 eine Seitenansicht der auf die Grundplatte aufgeschobenen Deckplatte zur Befestigung des Scharnierarms nach Figur 42,
• Figur 44 einen Längsschnitt durch den mit der Deckplatte verrasteten Scharnierarm nach Figur 42 mit den Rasthebel in seiner verrasteten Stellung blockierenden Klemmstück,
• Figur 45 eine perspektivische Ansicht des Klemmstücks nach den Figuren 42 bis 44,
• Figur 46 eine perspektivische Ansicht des Rasthebels nach den Figuren 42 bis 44,
• Figur 47 eine der Figur 44 entsprechende Darstellung eines verrasteten Scharnierarms mit einer anderen Ausführungsform eines Klemmstücks,
• Figur 48 das Klemmstück nach Figur 47 in Seiten- und Unteransicht,
• Figur 49 eine der Figur 44 entsprechende Darstellung des verrasteten Scharnierarms mit einer dritten Ausführungsform eines Klemmstücks und
• Figur 50 eine perspektivische Darstellung des Klemmstücks nach Figur 49.

Embodiments of the invention are explained below with reference to the drawing. In this shows

• 1 shows a longitudinal section through a first Embodiment of a hinge arm locked with a fastening plate,
• FIG. 2 shows a longitudinal section through the hinge arm according to FIG. 1, which is locked with the fastening plate, in the angular position changed by an adjusting screw,
• FIG. 3 shows a side view of the fastening plate after the hinge arm has been removed,
• FIG. 4 shows a front view of the fastening plate in its position prepared for pushing on the hinge arm,
• FIG. 5 longitudinal section through the fastening plate,
• FIG. 6 shows a perspective view of the locking lever,
• FIG. 7 shows a perspective view of the lever holding the latching lever in its insertion position,
• FIG. 8 shows a perspective view of the hinge arm,
• FIG. 9 shows a longitudinal section through a fastening plate of a second embodiment,
• FIG. 10 shows a front view of the fastening plate according to FIG. 9,
• FIG. 11 shows a plan view of the fastening plate according to FIG. 9, partly in section,
• FIG. 12 shows a perspective view of a locking lever,
• FIG. 13 shows a perspective view of the torsion leg spring which spreads the latching lever,
• FIG. 14 is a perspective view of the other locking lever,
• FIG. 15 shows a front view of the hinge arm of the second embodiment,
• FIG. 16 shows a longitudinal section through the hinge arm according to FIG. 15,
• FIG. 17 shows a plan view of the second embodiment of the hinge arm pushed onto the fastening plate with the latching levers pivoted in, partly in section,
• FIG. 18 shows an illustration corresponding to FIG. 17 of the hinge arm locked with the fastening plate,
• 19a-19h show the exploded individual parts of a third embodiment of a hinge arm that can be locked with a fastening plate,
• FIG. 20 shows a longitudinal section through the hinge arm according to FIG. 19,
• FIG. 21 shows a partial longitudinal section through the fastening plate according to FIG. 19,
• FIG. 22 shows a longitudinal section through the hinge arm locked with the fastening plate,
• FIG. 23 shows a side view of the fastening plate of a further embodiment,
• FIG. 24 shows a front view of the fastening plate according to FIG. 23,
• FIG. 25 shows a section through the fastening plate according to FIG. 24 along the line III-III,
• FIG. 26 is a bottom view of the lever pivotably mounted on the fastening plate,
• FIG. 27 shows a front view of the hinge arm which can be connected to the fastening plate,
• FIG. 28 shows a section through the hinge arm according to FIG. 27 along the line VI-VI,
• FIG. 29 shows a side view of the fastening plate with the hinge arm connected to it, in longitudinal section,
• FIG. 30 shows a side view of the fastening plate of a further embodiment,
• FIG. 31 shows a section through the fastening plate according to FIG. 30 along the line IX-IX,
• FIG. 32 is a perspective view of the bracket provided with the locking projections,
• FIG. 33 shows a front view of the hinge arm which can be connected to the fastening plate,
• FIG. 34 shows a longitudinal section through the hinge arm according to FIG. 33 along the line XII-XII,
• FIG. 35 shows a side view of the fastening plate with this latched hinge arm,
• FIG. 36 shows a preview of the hinge arm of a further embodiment,
• 37 shows a section through the hinge arm according to FIG. 36 along the line XV-XV,
• FIG. 38 shows a front view of the fastening plate of the third embodiment,
• FIG. 39 shows a side view of the fastening plate according to FIG. 38,
• FIG. 40 shows a section through the fastening plate according to FIG. 38 along the line XVIII-XVIII,
• FIG. 41 shows a section through the hinge arm locked with the fastening plate,
• FIG. 42 shows a longitudinal section through a hinge arm with the clamping piece partially pushed onto the latching lever pivotably mounted therein,
• FIG. 43 shows a side view of the cover plate pushed onto the base plate for fastening the hinge arm according to FIG. 42,
• 44 shows a longitudinal section through the hinge arm according to FIG. 42 locked with the cover plate with the clamping piece blocking the locking lever in its locked position, FIG.
• FIG. 45 shows a perspective view of the clamping piece according to FIGS. 42 to 44,
• FIG. 46 shows a perspective view of the locking lever according to FIGS. 42 to 44,
• FIG. 47 shows an illustration corresponding to FIG. 44 of a latched hinge arm with another embodiment of a clamping piece,
• FIG. 48 the clamping piece according to FIG. 47 in side and bottom view,
• FIG. 49 shows a representation of the latched hinge arm corresponding to FIG. 44 with a third embodiment of a clamping piece and
• FIG. 50 shows a perspective illustration of the clamping piece according to FIG. 49.

1 to 8 show a first embodiment of a hinge arm 2 which can be locked with the fastening plate 1.

On the mounting plate 1, a locking lever 3 is pivotally mounted about a bearing pin 4, which carries at its front end two tooth-shaped locking projections 5, which are approximately perpendicular to the pivot lever 3 on their side facing the bearing pin 4 have flanks 6. In the latched state shown in FIGS. 1 and 2, the latching projections 5 engage in latching openings 7, the latching projections 5 being supported on the edge 8 of the latching opening 7 with the upper region of their support flanks 6.

The hinge arm 2 has a U-shaped cross section in the manner shown in FIG. It consists of the lateral legs 9, 10, which are connected to one another by the central web part 11. In the front area of the hinge arm 2, edges forming ancillary webs 12, 13 are angled inwards from the side legs 9, 10.

The mounting plate is provided with lateral groove-shaped guides 14, 15, which serve to receive the sliding webs 12, 13. The front areas 16 of the guides 14, 15 are angled slightly upward in the manner shown in FIG.

The fastening plate 1 has a rear region 17 with a reduced diameter, which is provided with a recess 18 delimited by an upper cover wall and side walls. The upper cover wall is provided with a longitudinal slot 19 extending in the longitudinal direction, the end of which is open. The slot-shaped slot 19 forms a guide for the annular groove 20 of the adjusting screw 21, which is screwed into a threaded bore in the web part 11 of the hinge arm.

Screw holes 22 are provided for fastening the fastening plate 1 to a supporting wall stop part.

To fasten the hinge part 2 to the fastening plate 1, the sliding webs 12, 13 located only in the front region of the hinge arm 2 are inserted into the guide grooves 14, 15 of the fastening plate 1 until the end edges 23, 24 against the guide grooves 14, 15 butt end walls that form stops 25. During the advancement of the hinge arm 2 in the guide grooves 14, 15, the fastening screw 21 with its annular groove 20 is also inserted into its slot-shaped guide 19. As soon as the hinge arm 2 has been pushed up to the stop 25 in the guide grooves 14, 15, the locking projections 5 snap under the action of the spring 26 into the locking openings 7 in such a way that they rest with their support flanks 6 on the edge 8 of the Support locking openings 7. Since the distance between the support flanks 6 and the pivot pin 4 increases in the direction of the latching lever 3, the latching projections 5 endeavor to press the hinge arm against the stop 25, so that the hinge arm and the fastening plate are held together without play.

Since the front region 16 of the guide grooves 14, 15 is designed to be inclined, the sliding webs 23, 24 in these regions 16 are tilted and slightly deformed, so that any play present in the guides is also eliminated.

To adjust the joint, the hinge arm 2 can be pivoted relative to the mounting plate 1 by turning the adjusting screw 21.

The basic structure of the first embodiment of the snap connection between the hinge arm 2 and the fastening plate 1 has been described above, which also appears in the further embodiments with corresponding modifications. Special features of the first embodiment are explained in more detail below.

The locking lever 3 consists of a plate-shaped part with a rolled-up rear end forming a bearing eye 29. The bearing eye 29 passes through the bearing pin 4, which is fastened in the lateral bearing cheeks 27, 28 protruding from the fastening plate 1. Under the locking lever 3, the mounting plate is provided with a central elongated recess 30. In holes in the side walls of this recess 30, pins 31 of a pivotable lever 32 are mounted, the upper end of which penetrates the locking lever 3 in an elongated hole 32. The lever 32 has a round cross section and is flattened in its central region 33. The slot 32 is keyhole-shaped in a manner not shown, so that the round head 34 of the lever 32 can be passed through this. The central region 33 of the lever 32 is provided with a locking recess 35, the height of which corresponds to the thickness of the locking lever 3. The lever 32 passes through the compression spring 26, which is supported on the one hand on lower shoulders of the lever 32 and on the other hand against the underside of the locking lever 3, so that the locking projections 5 are pressed into the locking openings 7 in the locked position.

The lever 32 is further provided with a resilient tongue 37 which is supported against the rear wall of the recess 30 and presses the lever 30 against the front edge of the keyhole-shaped opening 32. If the locking lever 3 is depressed, the lever 32 snaps with its recess 35 over the front edge of the keyhole-shaped opening 32 in the locking lever 3 and holds it in the mounting position shown in FIG. 5.

The hinge arm 2 is provided with an inwardly projecting tongue 38 which is bent out of the web part 11 and which, when the hinge arm is slid on, abuts the head 34 of the lever 32 and releases the latching between the lever 32 and the latching lever 3, so that it engages with it Snap projections 5 can snap into the locking openings 7.

A window 39 has been formed in the web part 11 of the hinge arm 2 through the bent tongue 38, through which the tip 40 of a screwdriver can be inserted to depress the latching lever 3 when the hinge arm 2 is released. If the hinge arm 2 is pulled out of the guides of the fastening plate 1 after the locking lever 3 has been pressed down, the locking lever 3 swings up, until it abuts the underside of the head 34 of the lever 32 with the edges of the elongated hole 32 in the manner shown in FIG. 3.

The second exemplary embodiment of the snap connection between the hinge arm and the fastening plate will now be described with reference to FIGS. 9 to 18. The same reference numerals are used for corresponding parts as in the exemplary embodiment according to FIG. 1.

The mounting plate is provided with a recess 41 in which the locking levers 3, 3 'are pivotally mounted about a vertical bearing pin 4. The locking levers 3, 3 'are designed like pliers with two arms and carry at their front ends the toothed locking projections 5 provided with the support flanks 6. A helical torsion spring 42 is pushed onto the bearing bolt 4, the legs 43, 44 of which rest on the rear lever arms 45, 46 support the locking lever 3, 3 'and try to keep it in its spread position.

The mounting plate is provided with lateral groove-shaped guides 14, 15 which are limited by front stops 25. The locking projections 5 fastened to the locking levers 3, 3 'engage through elongated openings 47, 48 which are provided in the base of the groove-shaped guides 14, 15.

The rear end of the mounting plate 1 is provided with a slot-shaped guide 19 open to the rear for the groove 20 of the mounting screw 21.

The hinge arm 2 shown in FIGS. 15 and 16 is U-shaped in cross section and has sliding webs 12, 13 which are angled from its side legs 9, 10. In the inserted state, the rear edges of the sliding webs 12, 13 lie in the region of the openings 47, 48, so that the latching projections 5 are supported with their support flanks 6 on these rear edges and special latching openings can be dispensed with. As can be seen from FIG. 18, the sliding webs 12, 13 are resiliently clamped between the locking projections 5 and the stops 25.

To release the snap connection, the rear lever arms 45, 46 of the latching levers 3, 3 'are compressed in the manner shown in FIG. 17, so that the hinge arm 2 can be pulled out of the guides of the fastening plate 1.

A third exemplary embodiment will now be explained with reference to FIGS. 19 to 22. The same reference numerals have again been used for corresponding parts.

The hinge arm 2 is composed of the parts shown in FIGS. 19a-e. The rolled-up eye 29 of the locking lever 3 is pivotably mounted on the bearing pin 4 fastened in holes in the legs 9, 10 of the hinge arm 2. The pivot lever 3 is provided with lateral locking projections 5 formed by angling. The locking lever 3 is provided with an elongated rear angled part 50 which projects beyond the web part 11 of the hinge arm in the manner shown in FIG. 2, so that the locking lever 3 can be pivoted by hand.

In the angled legs 9, 10 of the hinge arm 2 stops 51, 52 are provided for the locking lever 3 at their rear ends, so that it can pivot between these stops and the rear edge 53 of the web part 11 of the hinge arm 2.

The compression spring 26, which acts on the locking lever 3 in the direction of the stops 51, 52, is clamped between a tongue 54 bent out of the locking lever 3 and the underside of the web part 11 of the hinge arm 2.

As can be seen from FIGS. 19f-h, the fastening plate consists of a base plate 55, onto which a cover plate 56 can be fastened with the screw 57. The cover plate 56 is U-shaped in cross section and has inward projections 57 with which it engages in the bayonet guides 58 of the base plate 55. By inserting the projections 57 into the vertical part of the bayonet guides 58, they reach the horizontal parts of the bayonet guides, in which they can be moved for depth adjustment. For the fastening screw 57, an elongated hole 59 is provided in the cover plate, so that a displacement over a sufficient length is possible.

The guides for the sliding webs 12, 13 of the hinge arm 2 are formed between the end edges 60 of the legs of the cover plate 56 and the flange-shaped parts 61 of the base plate 55. The flange-shaped parts 61 have a front angled region 62, which serves to tilt the sliding webs 12, 13 for the purpose of compensating for play.

In the cover plate 56 there are locking recesses 8 into which the locking projections 5 engage when the hinge arm 2 is pushed on in the manner shown in FIG.

The cover plate 56 has at its rear end bends 63, 64, the front edges of which form the stops 25. The hinge arm 2 is therefore resiliently clamped in the recesses 7 after insertion into the groove-shaped guides 14 on the mounting plate between the stops 25 and the supporting edges 8.

In order to be able to detach the hinge arm 2 from the mounting plate 1, it is only necessary to lift the rear part 50 of the locking plate 3 with the thumb, as a result of which the locking is released.

The fastening plate 70 shown in FIG. 23 essentially differs from the fastening plate shown in FIG. 3 only in that the pivotable lever 72 is double-armed. The lever 72 consists of a stamped sheet metal part and has in its central region angled tabs 73 provided with bores, by means of which it is mounted on the ends of the bearing bolt 74 fastened in the fastening plate 70. The front end of the front arm 75 of the lever 72 is provided with U-shaped angled tabs 71 forming the locking projections. The rear edges of the tabs 71 form oblique flanks 76.

The rear arm 77 of the double-armed lever 72 forms a pushbutton, by actuating it in the direction of arrow A the latching connection between the fastening plate 70 and the hinge arm 78 shown in FIG. 29 can be released.

As can be seen from FIG. 25, the fastening plate 70 has in its central region a recess 79, in the side walls of which an axis 80 is fastened in the lower region, on which one end of a tension spring 81 is fastened and the other end into the bore 82 of the arm 75 of the lever 72 is suspended.

The hinge arm 78 is designed essentially in the same way as the hinge arm shown in FIG. It has bends at its rear end which form sliding webs 12, 13 with which it can be inserted into the grooves 14, 15 of the fastening plate 70.

In the latched position shown in FIG. 29, the latching projections formed by the tabs 71 rest with their rear flanks 76 on the rear edges 83 of the sliding webs 12, 13, so that the latter between these flanks 76 and the end walls of the counter stops 23, 24 Grooves 14, 15 are clamped.

The exemplary embodiment shown in FIGS. 30 to 35 essentially differs from the exemplary embodiment according to FIGS. 23 to 29 only in that the locking projections 84 are arranged at the ends of the legs 85 of a bracket 86 which forms a displaceable element. The legs 85 are guided in guides 87 of the fastening plate 88 which cross the guide grooves 14, 15 in the manner shown in FIG. 30. The locking projections 84 are located in the recesses 89 of the fastening plate 88 provided below the guide grooves 14, 15, so that the bracket 86 cannot be pulled off without spreading the legs 85 upward.

A bore 90 is provided in the fastening plate 88 below the web of the bracket 86 connecting the legs 85. In this bore a compression spring 91 is arranged, which is supported at one end on the bottom of the bore 90 and at the other end against the web of the bracket 86 connecting the legs 85.

The web part 92 of the hinge arm 93 is provided with an opening 94, through which a screwdriver 95 or the like can grip and the bracket 86 can be pressed down with the fastening plate 88 to release the latching of the hinge arm 92 shown in FIG. 35.

In the embodiment shown in FIGS. 36 to 41, the lever 97 provided with the locking projection is pivotably mounted on the bolt 98 fastened in the hinge arm 96. The latching projection is formed by an angle 99 of the lever 97. In the area of the pin 98, the lever 97 is provided with a projection 100 which forms a second lever arm and which is supported in the manner shown in FIG. 15 against the web part 101 of the hinge arm 96 and holds the lever 97 in an approximately horizontal position.

The mounting plate 102 is provided with a horizontal sleeve-shaped guide 103, in which a pressure piece 104 is guided in a longitudinally displaceable manner. The pressure piece 104 is provided with an oblique wedge-shaped surface 105 at its front end. A rod 106 is fastened at its rear end, which passes through the end wall of the sleeve-shaped guide 103 in a hole and carries a head 107 at its free end.

If the hinge arm with its sliding webs 12, 13 is inserted into the longitudinal guide grooves 14, 15 of the fastening plate 102, the lever 97 with its beveled front edge 108 abuts the wedge-shaped beveled front side of the pressure piece 104 and presses it in the guide 103 against the force of the Compression spring 109 back. The guide 103 is provided with a window 110 in its upper wall. As soon as the lever 97 has pushed the pressure piece 104 back over the area of the window 110, the lever 97 engages with its front bent end in the window 110 in such a way that the pressure piece 104 has the obliquely angled area 99 of the lever 97 in the figure 19 evidently pushes against the front edge 111 of the window 110. Since the pressure piece 104 strives to pivot the lever 97 upward, that is to say to hold the angled region 99 of the lever 97 in contact with the edge 111 of the window 110, the hinge arm 96 with the front edges of the sliding webs 12, 13 is against the Pressed stops, which are formed by the guide grooves 14, 15 closing walls. In this way, the hinge arm 96 is held on the mounting plate 102 without play.

To release the locking connection between the hinge arm 96 and the fastening plate 102, the button 107 of the rod 106 is to be pulled in the direction of the arrow B.

In the embodiment of the hinge arm according to FIGS. 42 to 46, a clamping piece 112 is pushed onto the extended actuating part 50 of the locking lever 3. The actuating part 50 of the locking lever 3 is forked in the manner shown in Figure 46. The clamping piece 112 best seen in FIG. 45 is provided with lateral groove-shaped guides 113 for the legs of the forked actuating part 50, so that the clamping piece 112 can be pushed onto the actuating part. The clamping piece 112 is provided on its front side with inclined surfaces 114, 115 which converge on a crease line and form an obtuse angle with one another.

During assembly, the clamping piece 112 is in the shown in Figure 42 only partially pushed onto the actuating member 50 so that it does not block the locking lever 3. After assembly, the clamping piece 112 is pushed down vigorously so that the rear edge of the hinge arm 2 lies in the bend between the inclined surfaces 114, 115 in the manner shown in FIG. 44 and the locking lever 3 is blocked in its locked position.

As can be seen from FIG. 44, the cover plate 56 has latching recesses 116 on both sides in the region of its rear part in the insertion direction. As soon as the hinge arm 2 is pushed a short distance onto the cover plate 56, the hook-shaped locking projections 5 of the locking lever 3 snap into these locking recesses 116, so that the hinge arm 2 is held in the position that is only slightly pushed open during the pre-assembly.

In the exemplary embodiment according to FIGS. 47 and 48, the clamping piece 117 consists of a flat strip-shaped part provided with locking pins 118, which is fixed in a recess 119 on the hinge arm 2 and is supported with its front beveled part on the actuating part 50 of the locking lever 3.

In the embodiment according to FIGS. 49 and 50, the clamping piece 121 consists of a part that can be inserted between the locking lever 3 and the hinge arm 2.

The clamping pieces expediently consist of a sufficiently elastic plastic.

Claims (37)

1. A hinge arm (2, 78, 93, 96) provided with a mounting plate (1 ; 55, 56 ; 88 ; 102), which are respectively provided with a spring-loaded detent projection (5, 71, 84, 99), which is disposed at the end of a pivoted lever (3, 72, 97) or U-shaped member (86), and with a detent opening (7, 8, 47, 48, 99, 110) which parts in response to the insertion of the hinge arm into a guide (14, 15) of the mounting plate and their displacement in the longitudinal direction snap into an interengaged position, from which they are detachable, and also provided with a stop (25), which limits the displacement during or after the interengaging parts snap or have snapped into each other, characterized in that the detent projection comprises a side face (6, 76, 99), with which the detent projection bears on an edge (8, 83, 111) or a side of the detent opening in such a manner that a cooperating stop (23, 24) of the hinge arm or the mounting plate is constantly urged against the stop (25) of the other member without backlash.

2. A hinge arm according to claim 1, characterized in that the distance from the side face (6) of the detent projection (5) to the pivot (4) of the detent lever (3), measured from the portion with which said pivot bears on the edge (8) or the side of the detent opening (7), decreases continously.

3. A hinge arm according to claim 1 or 2, characterized in that an adjusting screw (21) for adjusting the gap is screwed into the hinge arm (2) and is provided with an annular groove (20) and in said groove is guided in a slotliketrack (19) of the mounting plate (1) whereas the side faces of the annular groove (20) overlap the upper and lower edges of the track (19).

4. A hinge arm according to claim 3, characterized in that the slotlike track (19) is open at one end.

5. A hinge arm according to any of claims 1 to 4, characterized in that the track in the mounting plate (1) consists of longitudinal grooves (14, 15), which are disposed on both sides of the track and receive sliding ribs (23, 24) of the hinge arm, which is U-shaped in cross-section, and said sliding ribs are angled inwardly from the ends of the flanges (9, 10) of the hinge arm.

6. A hinge arm according to any of claims 1 to 5, characterized in that the stop (25) is formed by the ends of the grooves and the cooperating stops are formed by the end faces (23, 24) of the sliding ribs (12, 13).

7. A hinge arm according to any of claims 1 to 6, characterized in that the sliding ribs (12, 13) are guided in the grooves (14,15) with a backlash and the end portions (16) of the grooves (14, 15) are upwardly or downardly inclined for a compensation of the backlash.

8. A hinge arm according to any of claims 1 to 7, characterized in that the detent lever (3) is provided on both sides of the centre line of the hinge arm (2) with two detent projections (5) and the slotlike guide (19) for the adjusting screw (21) is disposed in the central region of the mounting plate (1) and is open toward the outer end.

9. A hinge arm according to any of claims 1 to 8, characterized in that the detent lever (3) has upwardly directed, toothlike projections (5), which are mounted on a transversely extending pin (4), which is secured in side cheeks (27, 28) of the mounting plate (1), and the detent openings (7) consist of slots in the web (11) of the hinge arm (2), which is U-shaped in cross-section.

10. A hinge arm according to any of claims 1 to 9, characterized in that a compression spring (26) bearing on the detent lever (3) is disposed in an opening (30) of the mounting plate (1).

11. A hinge arm according to any of claims 1 to 10, characterized in that a lever (32) having a hook-shaped opening (35) is pivoted in an opening (30) of the mounting plate (1) and holds the detent lever (3) in its swung-in position and is provided with an upstanding nose (34) and in response to the sliding of the hinge arm (2) onto the mounting plate is pivotally moved by said nose to the position in which the detent lever (3) is released.

12. A hinge arm according to claim 11, characterized in that the locking lever (32) extends through a slot (32) of the detent lever (3).

13. A hinge arm according to claim 11 or 12, characterized in that the locking lever (32) is urged by a spring (37) toward that position in which it holds down the detent lever (3).

14. A hinge arm according to any of claims 10 to 13, characterized in that the web (11) of the hinge arm (2) is provided with a stop (38), which cooperates with the upstanding nose (34) of the lever (32).

15. A hinge arm according to any of claims 1 to 14, characterized in that the web (11) of the hinge arm (2) is provided with an opening (39), which permits the detent lever (3) to the depressed with a tool (40).

16. A hinge arm according to any of claims 1 to 8, characterized in that two detent levers (3, 3') are pivoted on a pin (4), which is secured in the mounting plate (1) at right angles thereto, and the detent projections (5) of said levers extend into slotlike lateral detent openings or behind the rear edges of the sliding ribs of the hinge arm (2).

17. A hinge arm according to claim 16, characterized in that the detent levers (3, 3') are two-armed and cooperate like pliers, and the pivot pin (4) is surrounded by a helical torsion spring (42), the legs (43, 44) of which bear on the detent levers (3, 3') and are held in their expanded position and with their rear ends (45, 46) extend over the mounting plate (1).

18. A hinge arm according to any of claims 1 to 8, characterized in that the detent lever (3) is mounted in the hinge arm (2) on a horizontal transverse pin (4) and with its toothlike projections (5) extends into detent openings (8) of the mounting plate (56).

19. A hinge arm according to claim 18, characterized in that the angular movement of the detent lever (3) is limited by stops (51, 52, 53) in the hinge arm (2), which is U-shaped in cross-section.

20. A hinge arm according to claim 18 or 19, characterized in that the compression spring (26) is held under stress between the detent lever (3) and the web (11) of the hinge arm (2).

21. A hinge arm according to any of claims 18 to 20, characterized in that the mounting plate is bipartite and comprises a longitudinally slidable plate (56) for a depth adjustment.

22. A hinge arm according to claim 21, characterized in that the longitudinally slidable plate (56) is provided with the detent openings (8) and with the track (19) for the adjusting screw (21), which is formed with the groove (20), and said longitudinally slidable plate has a slot (59) for a screw (57) for connecting said plate with the baseplate (55).

23. A hinge arm according to claim 22, characterized in that the baseplate (55) is provided with a bayonetlike track (58), which receives projections that are connected to the longitudinally slidable plate (56).

24. A hinge arm according to claim 1, characterized in that the detent projections consist of two lugs (71), which are angled in U-shape from the sides of the lever (72), which is pivoted to the mounting plate (70), and said lugs protrude in such a manner into the guiding grooves (14, 15) disposed on the sides of the mounting plate (70) that in the locking position said lugs extend behind the rear edges of the sliding ribs (12, 13) of the hinge arm (78) which are guided in said grooves, so that said sliding ribs are held in position by said lugs between the latter and the stops (23, 24) formed by the groove ends.

25. A hinge arm according to claim 24, characterized in that the lever (72) is two-armed and that arm (77) which is opposite to the arm (75) provided with the detent projections (71) constitutes a release key, which protrudes over the hinge arm (78) which has been pushed onto the mounting plate.

26. A hinge arm according to claim 1, characterized in that the detent projections (84) are provided at the ends of the legs (85) of a U-shaped member (86) and the legs (85) are guided in tracks (87), which are provided on the sides of the mounting plate (88) and cross the longitudinally extending guiding grooves (14, 15) for the sliding ribs (12, 13) of the hinge arm (93), a compression spring (91) is held under stress between the crosspiece connecting the legs (85) of the U-shaped member (86) and the bottom of a bore (90) in the mounting plate (88), and the detent projections (84) extend from below into the longitudinally extending guiding grooves (14, 15) of the mounting plate (88) in such a manner that the detent projections in their locking position extend behind the rear edges of the sliding ribs (12, 13) of the hinge arm (93), which are guided in said guiding grooves, so that said sliding ribs are held in position by said lugs between the latter and the stops formed by the groove ends (23, 24).

27. A hinge arm according to claim 26, characterized in that the hinge arm (93) which is U-shaped in cross-section has a web (92), which is formed with an opening (94), which in the interengaged position lies above the crosspiece of the U-shaped member (86).

28. A hinge arm according to claim 1, characterized in that the detent projection is formed by an angled portion (99) of the lever (97), which is freely pivoted to the hinge arm (96), and the detent projection is held by a stop (100) on the level of a sleevelike guide (103) of the mounting plate (102), a pressure member (104) which is adapted to be forced inwardly against spring force is guided in said sleevelike guide, the detent opening (110) is provided in the wall of the sleevelike guide (103), and when the lever (97) has been inserted into the guide (103) the pressure member (104) forces the angled portion (99) against an edge (111) of the detent opening (110) in such a member that the stops of the hinge arm (96) are urged against the cooperating stops (23, 24) of the mounting plate (102).

29. A hinge arm according to claim 28, characterized in that the pressure member (104) is secured to a rod (106), which extends through a hole in the end wall of the sleevelike guide (103), and said rod is provided with a head (107) at its end which protrudes over the hinge arm (96) and extends through a compression spring (109), which is held under stress between the end wall and the pressure member (104).

30. Apparatus according to claim 28 or 29, characterized in that the pressure member (104) is provided with a wedge-shaped beveled surface (105) on that side which faces the angled portion (99) of the lever (97).

31. A hinge arm according to any of claims 28 to 30, characterized in that the lever (97) is provided adjacent to its articulated joint (98) with a projection (100), which constitutes a second lever arm and bears on the web (101) of the hinge arm (96), which is U-shaped in cross-section, in such a manner that the forward end of the lever (97), which forward end is provided with the forward angled portion (99), is held on the level of the sleevelike guide (103) of the mounting plate (102).

32. A hinge arm according to any of the preceding claims, characterized in that the hinge arm (2) or the covering or mounting plate (1, 56) are provided with second detent openings (116) adjacent to their portions which are disposed at the rear in the direction of the inserting movement.

33. A hinge arm according to any of the preceding claims, characterized in that clamping members (112, 117, 121) for locking the extended actuating portions (50) of the detent levers (3)-in their locking position are adapted to be mounted on said actuating portions.

34. A hinge arm according to claim 33, characterized in that the extended actuating portion (50) is forked and its prongs constitute guides for the clamping member (112), which has a beveled surface (114, 115) bearing on the rear edge of the hinge arm (2).

35. A hinge arm according to claim 33, characterized in that the clamping member (117) is held with detent pins (118) in openings (119) of the hinge arm (2) and has a beveled surface (120) bearing on the actuating portion (50).

36. A hinge arm according to claim 35, characterized in that the detent pins (118) are provided with hooks.

37. A hinge arm according to claim 33, characterized in that the clamping member consists of a member (121) which is adapted to be inserted between the detent lever (3) and the hinge arm (2).

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