DE3120065A1 - Furniture hinge - Google Patents

Abstract

This is a furniture hinge having two hinge parts (4, 5) which are to be fastened to a furniture body (1) or to a door (2), flap or the like and which are connected to one another in an articulated manner via an inner and an outer hinge link (19 and 20). The hinge links are respectively mounted on each of the two sides on a hinge pin (12, 13, 15, 16) arranged on the hinge parts and form a four-bar linkage which lifts off the door (2) from the furniture body (1) during opening. Furthermore, there is a detent spring (21) which overcomes a dead centre and is intended for keeping the door (2) shut in the closed position and which has a V-like or U-like bow-shaped form, is supported with its legs on the body-side hinge part or on the body-side end of the outer link (20) so as to be prestressed towards this and arcuately surrounds at a distance the body-side hinge pin (12) of the inner link (19) by means of a bent intermediate portion (24). One leg (22) of the detent spring (21) is fixed to the body-side hinge part (4) in the longitudinal direction of the spring. A clamping screw (11) can pass through the upper wall (7) of the body-side hinge part (4) and engages with its inner end on the facing spring leg (22) for the purpose of adjusting the spring tension. <IMAGE>

Description

31200G5

Company Hetal-Werke Franz Hettich GmbH & Co ₁ 7297 Alpirsbach

Furniture hinge

The invention relates to a furniture hinge with two to be attached to a furniture body or to a door, flap or the like Hinge parts that are articulated to one another via an inner and an outer hinge link, which are each mounted on both sides on a hinge axis arranged on the hinge parts and a door, Form a flap or the like. When opening from the furniture carcass lifting four-bar articulation, and with one overcoming a dead center Detent spring, in particular a leaf spring, to hold the door, flap or the like closed in the closed position, which has a V- or U-like bow-shaped shape, with its one leg on the body-side hinge part and with its other leg on the body-side end of the

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outer handlebar is supported biased towards this and with a curved intermediate section, the body-side hinge axis of the inner link.

Such a spring tumbler is known from DE-OS 21 17 828, for example. In this case, the detent spring rests closely against the body-side hinge axis of the inner link, so that the intermediate section of the spring is strongly curved in accordance with the relatively small diameter of this hinge axis. As a result, the spring material is subjected to great mechanical stress at this point, which has an unfavorable effect on the service life of the spring. This risk of breakage exists all the more if the preload of the spring is selected to be correspondingly large in order to achieve a large locking force. Or in other words, due to the risk of breakage in the area of the cabinet-side hinge axis of the inner arm one is limited with respect to the size of the spring biasing the disadvantages mentioned can not meet characterized that it bends the spring less in the known case. As a result, the spring would namely no longer be arranged in a stationary manner and it would shift in the longitudinal direction of the spring mainly due to the frictional forces exerted by the outer link when pivoting the door, flap or the like. This would not only result in an undefined spring preload, but also lead to signs of wear and tear at the friction points.

The present invention is therefore based on the object of creating a hinge of the type mentioned at the outset, in which the stress on the spring, even if it is heavily preloaded, is reduced.

This object is achieved in that the one leg of the detent spring on the body-side hinge part is set in the longitudinal direction of the spring and that the detent spring with the body-side hinge axis of the inner link Distance rounded in an arc.

In this way the intermediate portion of the spring is from the The hinge axis is free and significantly less curved, since the definition is provided on the leg side. this leads to a reduction in the mechanical stress and the achievable spring preload is more variable.

A very simple fastening option is that one spring leg with the body-side hinge part is hooked, e.g. by one spring leg over a Plug connection is connected to the body-side hinge part. For this purpose, the one spring leg can be at the end have a hook-like bend that engages in a latching recess on the housing of the hinge part on the body side, so that no additional parts are required for attachment.

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As an alternative to this, in the case of a hinge, the carcass-side hinge part can be fastened to the carcass with the interposition of a fastening plate, the upper wall of the carcass-side hinge part being penetrated by screws, one of which is screwed on the upper wall and supported at the end on the fastening plate Adjusting screw for adjusting the position of the body-side hinge part is possible for the leaf spring to have a plug-in hole on one leg at the end with which the leaf spring is plugged onto a bearing eye for the adjusting screw which expediently protrudes in one piece from the top wall. In this case, the bearing eye has a double function, namely a screw bearing function for the adjusting screw and a holding function with respect to the leaf spring.

Finally, in a further embodiment it is provided that the body-side hinge part in the area of the end of one leg of the leaf spring has a bearing axis running parallel to the hinge axes ₀ which is encompassed by a roll of the spring leg _o

In the case of conventional hinges of the type mentioned at the outset, the preload of the built-in spring cannot be varied, although this would be desirable because of the use of the hinge for a wide variety of pieces of furniture. One

Another object of the invention is therefore to provide a hinge of the type mentioned, in particular with one on the body side Hinge part fixed in the longitudinal direction of the spring spring leg and 'the body-side hinge axis of the inner Handlebar with distance arc-shaped encircling detent spring to create that with regard to the spring tension and thus the Locking force is adjustable.

For this purpose it is provided that the top wall of the body-side Hinge part along which one spring leg is located extends, is penetrated by an externally operable, screwed in and screwed out clamping screw, which engages with its inner end on one spring leg to adjust the spring tension.

In this way, by means of the clamping screw, the distance between the top wall of the body-side hinge part and one spring leg and thus the spring tension can be changed by the spring force corresponding to the adjustment path. All that is required for this is the clamping screw, so the effort is extremely low. In connection with the The spring tension can reduce the curvature of the intermediate section of the spring and the associated high load capacity can be changed within a large range by means of the tensioning screw, even to greater pretensioning without reaching the maximum load capacity of the spring

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is ο if the spring is fixed at the same time, this results a defined dependence of the spring preload on the travel of the tensioning screw.

Embodiments of the invention and further useful measures will now be described with reference to the drawing. Show it;

Figure 1

a longitudinal section through a hinge according to a first embodiment the invention in the open position,

Figure 2

a corresponding representation of a further embodiment,

Figure 3

a Ausführur other © _»f gsform also in one of Figures" 1 corresponding Dar "position,

Figure 4

an enlarged section from Fig. ₀ 1,

FIG. 5 is a view of the arrangement according to FIG. 4, seen in the direction of arrow V,

Figure 6

an enlarged section from Fig. 2,

FIG. 7 shows a view of the arrangement according to FIG. 6 in the direction according to arrow VII and

Figure 8 is a side view of the hinge according to

Fig. 3 in partial representation, the hinge side visible here parallel to The sectional plane of FIG. 3 runs.

In Fig. 1, a wall 1 of a furniture body and a door 2, flap or the like. Are shown in dashed lines. These Door 2 is in the open position and is with help an externally invisible hinge 3, which contains two hinge parts 4, 5. The body-side Hinge part 4 is in a known manner with the interposition of a fastening plate, also indicated by dashed lines 6 attached to the furniture body, the mounting plate being attached directly to the body and the Body-side hinge part 4 sits on the mounting plate. The body-side hinge part 4 is further than Sheet metal part with a U-shaped cross-section bent on both sides, the top wall 7 being separated from the two side walls protrude towards the body, of which only one side wall is visible, those still to be described on the body side Hinge part 4 supported and covered in it parts. An elongated hole 9 in one end of the Cberwand 7 is

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penetrated by his fastening screw 10, which the Connection to the mounting plate 6 establishes. With a longitudinal distance to the door-side hinge part 5 is a Adjusting screw 11 is provided, which is screwably mounted on the upper wall and located within the hinge part on the body side 4 with its end on the mounting plate 6 for position adjustment of the carcase-side hinge part. By turning the adjusting screw 11 and then tightening it the fastening screw 10 can be used to change the distance between the body-side hinge part 4 and the body wall 1 « All of this is known, so there is no need to go into it any further.

At the front end of the body-side hinge part 4 is with two body-side hinge axes 12, 13 in the form of pins riveted to the side walls 8. Included the area of the hinge part end provided with one hinge axis 12 extends from its furniture body facing support edge to the upper wall 7 is set back.

The door-side hinge part 5 is cup-shaped and let into a recess 14 of the door 2. This hinge part 5 carries two door-side hinge axes 15, 16, which together with the carcass-side hinge axes 12, 13 form a four-bar linkage. In such an arrangement, a lifting of the door 2 when opening according to arrow 17 from

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Furniture body 1 ensured. With the door closed 2 (this position is not shown in the drawing) the one provided with the body hinge axis 12 occurs the front end of the carcass-side hinge part 4 into a recess 18 of the door-side hinge part 5 a.

The body-side hinge axis 12 and the door-side Hinge axes 15 are connected to one another via an inner hinge link 19. The same is the case on the body side The hinge axis 13 is connected to the door-side hinge axis 16 via an outer hinge link 20. the Hinge links 19, 20 are made of iron strips and extend at right angles with their wide dimensions to the drawing plane. Their ends are each provided with a pair of lobe-like bearing eyes that are bent at right angles to accommodate the hinge axes 12,13,15,16. Depending on the distance between the hinge axes and the ribbon-shaped Main part of the handlebars, the bearing eyes have a more or less great height. The hinge is now designed in such a way that that its hinge parts 4.5 are held by rusting in the closed position, not shown, in which the door 2 is pivoted up against the arrow 17 by 90. Thus, the hinge and with this the Doors can only be opened after overcoming a pressure point. Such a guard locking or latching is known

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for this purpose, the known, comparable hinges have a detent spring which overcomes a dead center.

With all! Embodiments shown in the drawing the detent spring is formed by a leaf spring 21 which has a V- or U-like bow-shaped shape owns. The spring 21 is also supported with its one leg 22, which is opposite the top wall 7 in the The interior of the carcass-side hinge part runs on the carcase-side hinge part as well as with its other Leg 23 from the body-side end of the outer link, the spring being pretensioned towards the outer link 20 isto is located between the two spring legs 22, 23 directed away from the door-side hinge part on the same side a curved intermediate section 24, which circles the body-side hinge axis 12 of the inner link 19. When the door is closed, the body-side end of the outer link 20, which is slightly bent towards the body-side hinge axis® 13, along the outside of the other spring leg 23 until the arrangement has a position reached, in which the spring presses the outer link 20 into the closed position. The door can then only go towards you this locking force can be opened again.

One leg 22 of the spring is fixed on the body-side hinge part 4 in the longitudinal direction of the spring, ie in the direction of the longitudinal axis of the body-side hinge part, and the

The detent spring surrounds the body-side hinge axis 12 of the inner handlebars at a distance. The intermediate section 24 thus has a relatively small curvature and is stationary out of engagement with the hinge axis 12. The spring 21 needs in the area of its intermediate section 24 at all no storage, since its leg 22 and thus the entire spring is immovable.

In the embodiment according to FIGS. 1, 4 and 5, the one spring leg 22 with the body-side hinge part 4, with its top wall 7, hooked. It results a plug connection between the spring leg 22 and the upper wall 7 by the spring leg 22 at one end has a hook-like bend 25 which engages in a latching recess 26 on the housing of the carcass-side veneer part 4 engages (see especially Fig. 4 and 5). The bend 25 is out of the plane of the spring leg 22 in the spring plane, i.e. around a bending axis directed at right angles to the longitudinal direction of the spring, to the upper wall 7 of the U-shaped cross-section Housing of the body-side hinge part bent down, which the latching recess 26 in the form of a through hole contains. In particular from Fig. 5 it can be seen that the bend 25 has a smaller width than the leaf spring can own.

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3120Ü65

The hinges according to FIGS. 2 and 3 correspond, with the exception of the spring mounting, to the exemplary embodiment according to FIG. There is therefore no need to repeat the description of the general hinge structure. In the case of FIG. 2, which can be seen in connection with FIGS. 6 and 7, there is again a hooking of one leg 22a on the body-side hinge part 4a, which is also a plug connection. The spring leg 22a extending along the upper wall 7a of the carcass-side hinge part 4a is, however, lengthened with reference to the exemplary embodiment according to FIG. owns. The spring leg 22a is fitted with this plug-in hole 27a onto a bearing eye 28a protruding from the top wall 7, through which the adjusting screw 11 engages and which is provided with an internal thread corresponding to the external thread of the adjusting screw 11a. This bearing lug 28a, which is integrally pushed out of the top wall 7a inward is, even when the hinges of Figs ₀ 1 and 3 present (in Fig. 1, reference numeral 28 "in Figures _o 6 and 7 of clarity, is omitted for the adjusting screw been). In the hinge according to Fig _o 2, 6 and 7, the clevis 28a therefore has two functions, it serves in addition to its usual function of storage of the adjusting screw 11a for holding the leaf spring 21a. The spring leg 22a runs out and the only measure that has to be made is the plug-in hole 28a. "

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312006Ö

In the embodiment according to FIGS. 3 and 8, it has the body-side hinge part 4b in the area of the end of the one leg 22b of the leaf spring 21b one parallel running to the hinge axes 12b, 13b, 15b, 16b Bearing axis 30b, which extends between the two side walls of the body-side hinge part 4b, of which in FIG. 8 the side wall opposite the side wall 8b (FIG. 3) is visible from the outside. There is this bearing axis 30b with respect to the cabinet-side hinge axes 12b, 13b further inside on the cabinet-side Hinge part in the area of the upper wall 7b. The end of the spring leg 22b is rolled back towards the hinge axis 12b, so that the spring leg 22b has an end curl 31b which engages around the bearing axis 30b. on in this way, the spring 21b is hooked on the bearing axis 30b. During assembly, one can proceed in such a way that the spring 21b is first inserted and the curl 31b in one of the bearing openings for the bearing axis 30b in the side walls of the body-side hinge part brings the opposite position, after which the bearing axis 30b in the form of a bearing pin is plugged in.

All hinges shown also have an adjustment option for the spring preload. For this purpose, the upper wall 7, 7a, 7b, along which the one spring leg 22, 22a, 22b extends from an externally operable

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a · = and unscrewable clamping screw 32, 32a, 32b penetrated, which is used to adjust the spring tension with its
inner end engages the spring leg 22, 22a, 22b.
If you screw the tensioning screw inwards, the spring preload and thus the locking force increases, while unscrewing it reduces the preload. This is the same clamping screw in all the exemplary embodiments
arranged between the curved intermediate section of the spring and the fastening point of the one spring leg, expediently facing this fastening point. So that the spring leg 22, 22a, 22b can follow the adjustment of the tensioning screw 32, 32a, 32b, the spring leg end is fixed on the body-side hinge part so that it can be displaced parallel to the tensioning screw. In the embodiments according to FIGS. 1 and 2, this displaceable mounting results automatically as a result of the plug connection used here. In the case of FIGS is stored. For this purpose, the hinge part 4b on the carcass side has an elongated hole 33b or 34b in each of its side walls for mounting the bearing axis 30b. In this way, the bearing axis can move with the adjustment of the clamping screw.

In principle, the described adjustment option for the spring tension can also be provided for such hinges,

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those of the upper wall of the hinge part on the carcass side facing spring leg is not fastened. By attaching this spring leg, however, opens up Possibility of guiding the spring in a large arc around the body-side hinge axis of the inner link, so that the The spring is subject to less stress, so that the spring preload is more variable and this can adjust a mean value to smaller and larger values.

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Claims (1)

31200 ο May 19, 1981 D 8573 - dlku Company Hetal-Werke Franz Hettich GmbH & Co, 7297 Alpirsbach Furniture hinge Expectations Furniture hinge with two on a furniture body or «on a door, flap or the like, to be fastened hinge parts, which have an inner and an outer hinge link are hingedly connected to one another, each arranged on both sides on each one on the hinge parts Hinge axis are mounted and a door, flap or the like ο lifted off the furniture body when opening form, and with a detent spring overcoming a dead center, :.: ■ ■ "■■ ■" ■ - 312Ü0C5 in particular a leaf spring to hold the door or flap shut or the like. In the closed position, which is a V- or U-like Has a bow-shaped shape, with one of its legs on the body-side hinge part and with its other Leg at the body-side end of the outer link is supported in a biased manner towards this and with a curved Intermediate section encircles the body-side hinge axis of the inner link, characterized in that the one leg (22) of the detent spring (21) is fixed on the body-side hinge part (4) in the longitudinal direction of the spring and that the detent spring encircles the body-side hinge axis (12) of the inner link (19) at a distance in an arc-shaped manner. 2. Hinge according to claim 1, characterized in that the one spring leg (22) with the body-side hinge part (4) is hooked. 3. Hinge according to claim 1 or 2, characterized in that the one spring leg (22) has a plug connection is connected to the body-side hinge part (4). 4. Hinge according to one of claims 1 to 3, characterized in that that the one spring leg at the end has a hook-like bend (25) which is inserted into a locking recess (26) engages the housing of the body-side hinge part. 31200G5 5 "Hinge according to claim A, characterized in that the bend (25) is bent out of the plane of the one spring leg in the spring plane to the upper wall (7) of the housing of the body-side hinge part, which has a misshapen cross-section, which forms the latching recess (26) contains a through hole. 6. Hinge according to claim 5, characterized in that the bend (25) has a smaller width than the leaf spring, 7, hinge according to one of claims 1 to 3, hai which the body-side hinge part can be attached to the body with the interposition of a fastening plate, the upper wall of the body-side hinge part being penetrated by screws, of which one © screw one screwed to the wall mounted © and itself The adjusting screw which supports the end of the fastening plate for adjusting the position of the hinge part on the carcass side is characterized in that the leaf spring (21a) has a plug-in hole (27a) on its one leg (22a) at the end, with which the leaf spring can expediently be attached to one of the top wall (7a) integrally protruding bearing eye (28a) for the adjusting screw (Ha) is attached. 8o hinge according to one of claims 1 to 3, characterized in that that the body-side hinge part (4b) in Area of the end of one leg (22b) of the leaf spring (21b) one parallel to the hinge axes (I2b, 13b, 15b, 16b) has running bearing axis (30b) which is encompassed by a roll (31b) of the spring leg. 9. Furniture hinge with two hinge parts to be attached to a furniture body or to a door, flap or the like, which are articulated to one another via an inner and an outer hinge link, each are mounted on both sides on a hinge axis each arranged on the hinge parts and a door, flap or The like. When opening from the furniture carcass, form a lifting square, and with a detent spring that overcomes a dead point, in particular a leaf spring to hold the door, flap or the like closed in the closed position, which is a V- or U-like Has a bow-shaped shape, with one of its legs on the body-side hinge part and with its other Leg at the body-side end of the outer link is supported in a biased manner towards this and with a curved Intermediate section encircles the body-side hinge axis of the inner link, in particular according to one of the claims 1 to 8, characterized in that the upper wall of the body-side hinge part, along which the one The spring leg extends, is penetrated by an externally actuatable, screwed in and screwed out clamping screw (32), which engages with its inner end on one spring leg to adjust the spring tension. ■ L ^: 5--: '- ■■' ■ - 3120UG5 10ο hinge according to claim 9, characterized in that the one spring leg is fixed parallel to the clamping screw (32) displaceably on the hinge part on the body side. 11 ο hinge according to claim 8 and 10, characterized in that that the bearing axis (30b) for the rolling (31b) of the spring leg can be displaced parallel to the clamping screw (32b) is stored. 12 »Hinge according to claim 10, characterized in that the body-side hinge part (4b) in its side walls (8b) each have an elongated hole (33b, 34b) for mounting the bearing axis (30b) possesses.