EP0044081A1 - Hinged connection for lids or the like turning around horizontal axes - Google Patents

Abstract

The hinge joint consists of a hinge part (4) forming a supporting-wall fixture part and of a pivotable hinge part (5) which are connected to one another in an articulated manner by means of two links (6, 7) to form a four-bar system. A brake shoe (37) transmits to one of the links, at a distance from one of its pivot pins, a braking force which counteracts the pivoting torque. In order in a simple way to compensate the torque generated by the flap or the like by means of the braking force, the brake shoe (37) is fastened to the link at a distance from the pivot pin and is guided in a guide (35) which is concentric relative to the pivot pin and which is located in a wall (15) of the housing of the hinge part containing the pivot pin. The brake shoe (37) thereby interacts frictionally with the guide (35) or its edge regions. <IMAGE>

Description

The invention relates to a hinge joint for flaps or the like pivotable about horizontal axes, comprising a hinge part forming a supporting wall stop part and a pivotable hinge part which are articulated to one another by a pair of links to form a four-bar system, and with one on one of the links at a distance from one of its articulation axes brake shoe transmitting the counteracting torque.

The problem with vertical or horizontal flaps in the closed state, which can be pivoted between their open and closed positions about horizontal axes, that they try to pivot according to their inclination from their vertical position, in which the pivot axes are in or in the plane of the flaps, to pivot torque. This means that a flap which is vertical in its closed position, after it has opened, has to fall into its open position when it opens downwards and, after opening, wants to fall into its closed position when it opens upwards. Flaps lying horizontally in their closed position always strive to fall into their closed position after they have been opened. Basically, flaps are only useful for the furniture industry if they are able to remain in their extreme positions and, if possible, also in intermediate positions. Numerous fittings are already known which hold flaps in their extreme positions and also in intermediate positions.

From DE-GMS 73 19 339 an upward opening and when opening over the upper wall of the box-shaped furniture part to be closed swiveling flap is known, which is connected to the furniture part by two handlebars forming a four-link system, the pivoting in their open position for weight compensation Flap is provided with a gas spring articulated to the furniture part and the flap.

In the devices known from DE-GMS 76 06 067 and 77 05 285, in addition to the separate flap joints, fittings consisting of spring-loaded articulated rods are known which compensate for the flap torques which result during the opening.

From DE-GMS 69 30 765, a hinge joint for flaps consisting of two links is known, which is provided with a locking device which is effective in the area of the open position and which prevents the stair from accidentally falling shut.

DE-GMS 72 28 305, 66 08 607, 69 07 751, 75 17 331 and 70 45 427 in addition to the flap joints on the flaps hinged rods are known, the free ends in guides provided with braking devices, which on the furniture part to be locked are attached, are guided.

The known devices are disadvantageous in that they partly require a large amount of space, partly require additional braking or compensation devices in addition to the actual flap joints and partly: Do not allow the flaps to remain in intermediate positions.

In a hinge joint of the type specified at the outset, which is known from DE-OS 27 57 230, a handlebar is connected to a cam disc, with the cam surface of which a spring-loaded brake shoe cooperates in a frictionally locking manner must have a widened cam surface.

The object of the present invention is to provide a hinge joint of the type specified at the beginning, the handlebars of which can be acted upon in a simple manner with a braking force which compensates for the flap torque, without these having to be connected to special cam disks.

According to the invention this object is achieved in that the brake shoe is attached to the handlebar at a distance from the hinge axis and is guided in a guide which is concentric with the hinge axis and is located in a wall of the housing of the hinge part containing the hinge axis, and in that the brake shoe is frictionally engaged with the leadership or its peripheral areas cooperates.

In the hinge joint according to the invention, special cam disks that transmit the braking torque can be dispensed with, because the brake shoe acts on a guide located in the housing wall, which can be attached with little additional effort, because a housing-like hinge part is expediently provided for mounting the handlebars, that has such a wall. In addition, the brake shoe acting on the guide acts as a lateral stabilization of the handlebar, which is particularly advantageous when the handlebars have a greater length.

Advantageously, the guide consists of an arcuate elongated slot, which passes through a pin attached to the handlebar, which carries at its free end the brake shoe, which is supported under elastic tension on the edge of the elongated hole. In order to increase the friction and to reduce the wear, an insert forming a friction part with a slot concentric to the hinge axis can be inserted into the curved slot, the edges of which are supported on the edges of the slot. The insert can be made of plastic or a special material that increases friction.

In a further embodiment of the invention, starting from the closed position of the brake shoe in the direction of its open position, the edge of the insert has a continuously increasing profile. The profile increases in such a way that the increasing torque with increasing pivoting of the flap is compensated for by a correspondingly increased braking force.

A resilient part is expediently arranged between the head of the pin and the brake shoe. The springy material can consist of a disc spring or a disc made of elastomeric material.

The brake shoe is expediently U-shaped in cross section and, with its edges adapted to the curvature of the insert, engages over the edges of the insert, so that it is guided and inadvertent rotation is prevented. The pin expediently consists of a screw screwed into the handlebar, so that the desired braking torque corresponding to the respective valve weight can be set via this screw.

According to a special embodiment of the invention, it is provided that the supporting wall stop part essentially consists of a flat housing formed from two interconnected, mutually parallel plates and at least one of the links mounted in it carries a guide block at a distance from its articulated axis, which engages with it Front side supported on the supporting wall side housing plate. This configuration not only ensures additional stabilization of the handlebars, it also prevents the handlebars from being able to scrape on the inside of the supporting wall when the flap is opened and closed.

According to a further preferred embodiment it is provided that one of the links has a cam with an end face which is concentric with the hinge axis and which is delimited by flanks falling down towards the hinge axis, and that a spring-loaded latching lug, which is guided in the housing, is supported on the cam in the open and closed positions on one of the flanks. With the flap opening upwards, this embodiment ensures that the flap is in its opening and closed positions is held by an additional holding force that must be overcome when opening and closing.

In the case of hinge joints for flaps opening downwards, only one flank securing the closed position needs to be provided.

As a finger guard, a plate which at least partially covers the space between the links is expediently attached to the flap-side outer link.

• Fig. 1 eine Seitenansicht des Scharniergelenks für nach oben öffnende Klappen,teilweise im Schnitt,
• Fig. 2 eine der Fig. 1 entsprechende Darstellung des Scharniergelenks in geöffneter Stellung,
• Fig. 3 einen Längsschnitt durch den inneren Lenker des Scharniergelenks nach den Fig. 1 und 2,
• Fig. 4 einen Längsschnitt durch den äußeren Lenker des Scharniergelenks nach den Fig.1 und 2,
• Fig. 5 eine Draufsicht auf das Einsatzteil für den Bremsschuh,
• Fig. 6 einen Schnitt längs der Linie A - B durch das Einsatzteil nach Fig. 5,
• Fig. 7 eine Seitenansicht des Einsatzteils nach Fig. 5,
• Fig. 8 eine Unteransicht des Bremsschuhs und einen Querschnitt von diesem,
• Fig. 9 eine Unteransicht der Druckscheibe und einen Querschnitt durch diese,
• Fig. 10 eine Seitenansicht des das Tragwand- anschlagteil bildenden Scharnierteils,
• Fig. 11 eine Vorderansicht des Scharnierteils nach Fig. 10, teilweise im Schnitt,
• Fig. 12 eine Seitenansicht des verschwenkbaren Scharnierteils,
• Fig. 13 einen Schnitt durch das Scharnierteil nach Fig. 12 längs der Linie C - D,
• Fig. 14 eine Seitenansicht des Nockenteils des äußeren Lenkers,
• Fig. 15 einen Längsschnitt durch das Nockenteil nach Fig. 14,
• Fig. 16 eine Draufsicht auf.das Rastteil,
• Fig. 17 einen Längsschnitt durch das Rastteil nach Fig. 16,
• Fig. 18 eine Unteransicht der mit Dübeln versehenen Befestigungsplatte,
• Fig. 19 eine Seitenansicht der Befestigungsplatte nach Fig. 18,
• Fig. 20 einen Längsschnitt durch das Nockenteil des äußeren Lenkers einer nach unten öffnenden Klappe,
• Fig. 21 eine Seitenansicht eines Scharniergelenks für nach unten öffnende Klappen in geöffneter Stellung, teilweise im Schnitt, und
• Fig. 22 das Scharniergelenk nach Fig. 21 im geschlossenen Zustand.

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

• 1 is a side view of the hinge joint for flaps opening upwards, partly in section,
• 2 shows a representation of the hinge joint corresponding to FIG. 1 in the open position,
• 3 shows a longitudinal section through the inner link of the hinge joint according to FIGS. 1 and 2,
• 4 shows a longitudinal section through the outer link of the hinge joint according to FIGS. 1 and 2,
• 5 is a plan view of the insert for the brake shoe,
• 6 shows a section along the line A - B through the insert part according to FIG. 5,
• 7 is a side view of the insert part of FIG. 5,
• 8 is a bottom view of the brake shoe and a cross section thereof,
• 9 is a bottom view of the thrust washer and a cross section through it,
• 10 is a side view of the hinge part forming the supporting wall stop part,
• 11 is a front view of the hinge part of FIG. 10, partially in section,
• 12 is a side view of the pivotable hinge part,
• 13 shows a section through the hinge part according to FIG. 12 along the line C - D,
• 14 is a side view of the cam part of the outer link,
• 15 shows a longitudinal section through the cam part according to FIG. 14,
• 16 is a plan view of the latching part,
• 17 shows a longitudinal section through the latching part according to FIG. 16,
• 18 is a bottom view of the fastening plate provided with dowels,
• 19 is a side view of the mounting plate of FIG. 18,
• 20 shows a longitudinal section through the cam part of the outer link of a flap opening downwards,
• 21 is a side view of a hinge joint for downward opening flaps in the open position, partly in section, and
• 22 the hinge joint according to FIG. 21 in the closed state.

The hinge joint 1 shown in Fig. 1 is used to link a flap 2 opening from the bottom up to, for example, a box-shaped furniture part 3. The hinge joint consists of a hinge part 4 forming a supporting wall stop part and a pivotable hinge part 5, in which the outer link 6 and the inner link 7 are stored. The hinge parts 4 and 5 consist of flat housings which are formed by U-shaped sheets and are therefore open to the side of the web. In the hinge part 4 forming the supporting wall stop part, the links 6, 7 are mounted on hinge pins 10, 11 which are fastened in the side walls 8, 9 of the hinge part 4.

In the pivotable hinge part 5, the other ends of the links 6, 7 are pivotally mounted about pivot pins 12, 13, which are fastened in the side walls 14, 15 of the hinge part 5. In this way, the links 6, 7 form a four-bar system 10, 11, 12, 13 with the hinge parts 4, 5.

The hinge part 4 forming the supporting wall stop part is fastened to the supporting wall by the screws 16, 17, 18. The screws 16, 17 are located in keyhole-like elongated holes 19, 20, so that the hinge part 4 can be set up in the vertical direction after its pre-assembly. To tighten the screws 16, 17 are intended in the upper wall 8 of the hinge part 4 for penetration by the screwdriver Elongated holes 21, 22 are provided. After the necessary adjustment of the hinge part 4, this is finally fixed by the screw 18 on the supporting wall.

The pivotable hinge part 5 is fastened to the flap 2 by means of screws 26, a keyhole-shaped elongated hole 23, a slit-shaped elongated hole 24 and a bore 25 for the fixing screw being provided for the screws 26 in the web part 27 of the hinge part 5 after the adjustment.

The upper edge 28 of the flap 2 forms in the assembled state of the hinge 1 with the top 29 of the upper wall of the furniture part 3 a step from the height a, so that when the flap 2 is pivoted, its parts do not protrude beyond the plane of the top 29.

The mechanism which allows the flap 2 to remain in all positions between its closed position according to FIG. 1 and its open position according to FIG. 2 is explained in more detail below.

In the upper wall 15 of the pivotable hinge part 5, an arcuate slot 30 is provided, which is arranged concentrically to the bore 31 for the bearing pin 13. In the slot 30, the insert part 32 is made of plastic or another friction-increasing, wear-resistant material with its fitting part 33 corresponding to the contour of the slot 30 in such a way that it overlaps the friction part 34 on the wall 15 in the edge region of the slot 30 supports. The friction part 34 increases in height starting from the right side shown in FIG. 7 to the left side. The insert part 32 is provided with an elongated hole 35 through which the screw 36, which is screwed into the handlebar 6, engages.

The screw 36 continues through the brake shoe 37, the disk 38 made of elastomeric material and the pressure disk 39, which is supported against the screw head 40. The brake shoe 37 overlaps the insert part 32 with its curved edges 41, 42, so that the brake shoe 37 is guided thereon. The pressure plate 39 is provided with a peripheral edge 43, so that the resilient plate 38 is fitted into the pressure plate 39. The frictional force which is generated by frictional engagement between the brake shoe 37 and the insert part 32 can be adjusted by tightening or loosening the screw 36 accordingly. The braking torque results from the set friction force and the lever arm, which corresponds to the distance of the screw 36 from the hinge pin 13.

The friction part 34 of the insert part 32 has the slope shown in FIG. 7, in order to increase the braking torque holding the flap in accordance with the flap torque which increases when the flap is opened.

The links 6, 7 are mounted on the hinge pins 10, 11, 12 via bushings 44. For fixation and stabilization, disks 45, 46 are inserted on the sides of the handlebars opposite the bushings 44. The disks 46 have a greater thickness than the flanges of the bushings 44, so that the links 6, 7 are so far away from the supporting wall that they cannot scrape on the inside thereof.

At a distance from the hinge pin 10, a pin 47 provided with a head 48 made of plastic or another material with favorable friction properties is inserted into a bore of the link 7. A disc 48 of the same material is placed on the end of the pin 47 passing through the handlebar 7. The head 48 of the pin 47 has the same thickness as the flange of the bush 44 and the washer 49 is as thick as the washer 46. The pin 47 and the washer 49, which slide on the inner sides of the walls 8, 9, confer this Handlebar 7 and thus the entire hinge joint good lateral stability.

A sleeve 50 made of plastic or another material with favorable friction properties is pushed onto the end of the link 7, which is mounted on the pivot pin 13. The sleeve 50 is essentially rectangular in cross-section and rests with its flat sides 51, 52 on the inner sides of the walls 14, 15 of the pivotable hinge part 5. This also increases the transverse stability of the hinge joint. The sleeve has a continuous bore 51 for the pivot pin 13 and a further bore 52 for the screw 36 to pass through. In its front area, the sleeve 53 is provided with a cam 54. This cam has a peripheral surface 54 that is concentric with the hinge pin 13 and lateral flanks 55, 56.

A latch 57 cooperates with the cam 53 and is arranged at the front end of a sleeve-shaped part 58. This sleeve-shaped part 58, which is approximately rectangular in cross-section, is guided so as to be longitudinally displaceable in the pivotable hinge part 5 between embossed ribs 59. It is supported by a compression spring 60 on the web part 27 of the pivotable hinge part 5.

The detent 27 slides on the cam 53 in the manner shown in FIGS. 1 and 2. In the closed position shown in FIG. 1, the detent 57 rests on the flank 55 and in the open position shown in FIG. 2 on the flank 56, so that the flap is locked in its closed and open positions. In the intermediate positions, the locking lug 57 rubs on the curved part 58 of the arc, which additionally increases the braking torque holding the flap.

The hinge part 4 forming the supporting wall stop part can also be fastened to the supporting wall with the supporting plate 60 provided with the dowels 61, 62.

The hinge joint shown in FIGS. 21 and 22 for flaps opening from top to bottom basically has the same structure as the hinge joint according to FIGS. 1 and 2. However, the slope of the friction part of the insert part 32 must be adapted to the different flap torque.

Furthermore, the sleeve 50 'need only have a flank 63 which secures the closed position shown in FIG. 22.

In the open position shown in FIG. 21, the flap 2 'abuts the front end edge of the lower wall of the box-shaped furniture part with its lower end edge, see above that the hinge joint is locked. The flap 2 ', the inside of which is expediently aligned with the top of the box-shaped furniture part in the open position, can also be used as a table top.

A plate 64 is riveted or otherwise connected to the outer handlebar 6, which forms a finger guard.

Claims (17)

1. Hinge joint for flaps or the like pivotable about horizontal axes with a hinge part forming a supporting wall stop part and a pivotable hinge part which are articulated to one another by a pair of links to form a four-bar system, and with one on one of the links at a distance from one of its articulation axes to the one pivoting Torque-counteracting braking force-transmitting brake shoe, characterized in that the brake shoe (37) is attached to the handlebar (6) at a distance from the articulation axis (13) and in a guide (32) concentric with the articulation axis (13), which is located in a wall ( 15) the housing of the Joint axis (13) containing hinge part (5) is guided, and that the brake shoe (37) cooperates frictionally with the guide (32) or the Ran areas (34). 2. Hinge joint according to claim 1, characterized in that the guide consists of an arcuate elongated hole (35) which passes through a pin (36) fastened on the handlebar (6) which carries the brake shoe (37) at its free end, which is supported under elastic prestress on the edge (34) of the elongated hole (35). 3. Hinge joint according to claim 1 or 2, characterized in that in the curved slot (30) a friction part (34) forming insert (32) with a to the hinge axis (13) concentric slot (35) is inserted, the edges of which support the edge areas of the elongated hole (30). 4. Hinge joint according to claim 3, characterized in that the edge (34) of the insert (32) starting from the closed position of the brake shoe (37) in the direction of its open position has a continuously increasing profile. 5. Hinge joint according to one of claims 1 to 4, characterized in that a resilient part (38) is arranged between the head (40) of the pin (36) and the brake shoe (37). 6. Hinge joint according to claim 5, characterized in that the resilient part (38) consists of elastomeric material. 7. Hinge joint according to one of claims 3 to 6, characterized in that the brake shoe (37) is U-shaped in cross section and with its edges (41, 42) adapted to the curvature of the insert (32), the edges of the insert (32 ) overlaps. 8. Hinge joint according to one of claims 1 to 7, characterized in that the pin consists of a screw (36) screwed into the handlebar (6). 9. Hinge joint according to one of claims 1 to 8, characterized in that the supporting wall stop part (4) consists essentially of a flat housing formed from two interconnected, mutually parallel plates (8, 9) and at least one of the links mounted in this ( 7) at a distance from its hinge axis (10) carries a guide block (49) which is supported with its end face on the supporting wall-side housing plate (9). 10. Hinge joint according to claim 9, characterized in that on both sides of the link (7) with their end faces on the housing plates (8, 9) supporting guide blocks (48, 49) are arranged. 11. Hinge joint according to claim 10, characterized in that the supporting block-side guide block (49) has a greater height than the opposite one (48). 12. Hinge joint according to one of claims 1 to 11, characterized in that one of the links (6) has a cam (53) with a to the hinge axis (13) concentric end face (54) from about to the hinge axis (13) descending flanks (55, 56) is limited, and that a spring-loaded detent lug (57) is supported on the cam (53) and bears against one of the flanks (55, 56) in the open and closed positions . 13. Hinge joint according to one of claims 1 to 12, characterized in that only one flank (63) securing the closed position is provided for hinge joints for downward opening flaps (2 '). 14. Hinge joint according to claim 12 or 13, characterized in that the cam (53) is formed on the front of a sleeve (50) which is pushed onto the handlebar (6) and with its sides on the inner walls of the housing plates (8, 9) slides. 15. Hinge joint according to one of the preceding claims, characterized in that a plate (64) at least partially covering the space between the links (6, 7) is attached to the flap-side, outer link (6). 16. Hinge joint according to one of the preceding claims, characterized in that the upper edge of the upward opening flap (2) forms a step with the top (29) of the box-shaped furniture part (3). 17. Hinge joint according to one of claims 1 to 15, characterized in that the lower edge of the downward opening flap (2 ') lies bluntly in front of the end face of the lower wall of the box-shaped furniture part in the open, horizontal state.

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