Retaining element

ES 2 313 632 T3

DESCRIPTION

Retention element.

The present invention relates to a retaining element, in particular for a cabinet lid, with an arm, which can be rotatably fixed between an open position and a closed position around a first arm axis of a first hinge to a cabinet box and can be rotatably connected to the lid, with a lever, can be rotatably fixed around a first lever axis of a second hinge to the cabinet box, with a push element, which is displaceably guided in the arm along a thrust axis, the lever rotatable about a second lever axis being displaceably connected with the thrust element as well as with a force element, which is supported against the arm and against the push element and that loads these with force.

Such a retaining element is known from DE 25 16 635 B1. In this retaining element, the arm is structured as a tube and houses a force element in the form of a helical spring. This is connected, on the one hand, with the lever and, on the other, with the tube. The helical spring is loaded under tension and holds the arm in the closed position. When opening the cover, the arm goes beyond a neutral position from which the helical spring loads the arm in the open position, so that the arm is automatically moved to the open position and is held there. The first lever axis is arranged such that the lever and the first arm axis are on the thrust axis when the coil spring is fully tensioned. The lever penetrates through a notch in the tube and is curved in the shape of an arc and has a recess which, in the position of the arm in which the helical spring is fully preloaded, surrounds a pin of the first joint.

The present invention raises the problem of creating a retaining element which is simply structured and enables easy adjustment to different covers.

This problem is solved according to the invention by means of a retaining element, especially for a cabinet lid, which is structured as a mechanism with four articulated bars in the form of an eccentric sliding device, comprising an arm as a mechanism sliding device sliding, which can be rotatably fixed between an open position and a closed position around a first arm axis of a first joint to a cabinet box and can be rotatably connected to the lid, a lever as a mechanism crank of slide, which can be fixed rotatably around a first lever axis of a second joint to the cabinet box, a push element as a sliding block of the slide mechanism, which is guided movably on the arm along a thrust axis, the connected lever being rotatable about a second displaceable lever axis with the thrust element and the first remote arm axis crossing the thrust axis, thus as a force element, which is supported against the arm and against the thrust element and which loads these with force.

Since the retaining element is formed as a four-link mechanism in the form of an eccentric slide device and the thrust axis thus crosses the first arm axis at a distance, a collision of the lever is prevented by rotating the arm. with the first joint. The structure of the retaining element can thereby be formed more simply. The lever can be made, for example, straight.

Another advantage is that by means of a straight lever it can conduct the forces to be absorbed particularly well. In particular, when the lever is pulled under tension, a straight construction of the lever has an advantageous action, since the latter does not have to be particularly reinforced against bending.

Adjustment means are advantageously provided, by means of which the position of at least one of the joints can be adjusted. The retaining element can therefore be adjusted to different lids not only by adjusting the outside of the force element, as is made possible for example in spring means by adjusting the pretension. Rather, the positions of the joints are adjusted to each other. The force of the force element can here be additionally adjustable.

Since the joints are mounted in the cabinet box, easy accessibility and easy mounting is guaranteed.

The adjustment means can have a support element, which supports the first and second articulations and which is fixed, at least indirectly, to the cabinet box.

The support element preferably has a base element and a skid, the base element having a guide, along which the skid is movably guided. One of the joints is provided on the base element and the other joint is on the skid. Consequently there is a simple and robust structure of the adjustment means.

ES 2 313 632 T3

The first joint can be provided on the base element and the second joint on the skid, so that it is not necessary to move the joint of the larger structured arm but rather the joint of the smaller structured lever.

In order to ensure an adjustment of both joints, so that manufacturing tolerances of the cabinet can also be compensated, a fixing plate is provided, to which the support element is fixed and which can be fixed to the control box. wardrobe.

The support element can thereby be fixed to a mounting plate, which is arranged movably along a guide of the mounting plate. Consequently, different mounting plates and fixing plates can be provided for different cabinets, without the support element having to be modified.

In a preferred embodiment, the thrust element is guided in the arm movably along a thrust axis.

In this case, the arm can have a tube, in which the push element is guided movably.

The retaining element is preferably structured in such a way that the arm is held, in the open position, by the force element in this position. Furthermore, the arm can be held, in the closed position, by the force element in this position.

The force element is preferably a gas spring. This provides a force element that exerts approximately a constant force regardless of the amount of spring compression. Consequently, a retaining element can be created which is formed in such a way that the lid, starting from at least one dead center, is held in any desired position in the direction of the open position. Since the force of the gas spring and the configuration of the four-link mechanism are formed in such a way that the cover is held in any desired position, no braking means is necessary. Thanks to this, the lid can be turned easily. A standstill must be foreseen when a moment of attraction has to be generated from this point in the direction of the closed position.

The retaining element can be intended for a cover, which is rotatably fastened to the cabinet box of the cabinet, the arm being rotatable and movable about a second arm axis of a third joint.

In this embodiment, the lid is rotated around an axis of rotation with respect to the cabinet box.

Furthermore, the retaining element can also be intended for a cover, which is not fixed directly to the cabinet box of the wardrobe, the arm being fixed to the cover rotatable around a second arm axis of a third articulation, presenting the retaining element a control arm, which can be fixed to the cabinet box rotatable around a first control arm axis of a fourth joint, and the control arm being attached to a cap rotatable about a second control arm axis of a fifth link.

In this embodiment the cover is either displaced in parallel or it is rotated on the ceiling of the cabinet box.

In this case the retention element may comprise a fixing element, to which the arm is fixed, rotatable about the second arm axis, and the control arm, rotatable around the second control arm axis, the fixing element being fixed to the lid. Consequently, a constructive unit is formed which can be easily assembled.

In another embodiment, the retaining element is intended for a lid in the form of a folding lid with a first lid element and a second lid element, the first lid element being rotatably fixed to the cabinet box and the second being lid element rotatable with the first lid element, and the arm being fixed to the second lid element of the lid rotatable about a second arm axis of a third hinge.

In this embodiment the lid is folded up when opening.

An example of a preferred embodiment is explained in greater detail from the following figures, in which:

Figure 1 shows a perspective representation of a retaining element according to the invention;

Figure 2 shows a longitudinal section of the retaining element according to Figure 1 in the closed position;

Figure 3 shows a longitudinal section of the retaining element according to Figure 1 in an intermediate position;

Figure 4 shows a longitudinal section of the retaining element according to Figure 1 in the open position;

ES 2 313 632 T3 Figure 5 shows a longitudinal section of the retaining element according to Figure 1 in the closed position of a first application;

Figure 6 shows a longitudinal section of the retaining element according to Figure 1 in the intermediate position of a first application;

Figure 7 shows a longitudinal section of the retaining element according to Figure 1 in the open position of a first application;

Figure 8 shows a longitudinal section of the retaining element according to Figure 1 in the closed position of a second application;

Figure 9 shows a longitudinal section of the retaining element according to Figure 1 in the intermediate position of a second application;

Figure 10 shows a longitudinal section of the retaining element according to Figure 1 in the open position of a second application;

Figure 11 shows a longitudinal section of the retaining element according to Figure 1 in the closed position of a third application;

Figure 12 shows a longitudinal section of the retaining element according to Figure 1 in the intermediate position of a third application;

Figure 13 shows a longitudinal section of the retaining element according to Figure 1 in the open position of a third application.

Figures 1 to 4 show a retaining element according to the invention in different representations and are explained together below.

The retaining element comprises an arm 1, a lever 2, a thrust element 3 as well as a force element 4. The arm 1 can be fixed to a cabinet box rotatable around a first arm axis 5 of a first joint 6 between a closed position, represented in Figure 2, and an open position, represented in Figure 4. The arm 1 can be further connected with the cabinet lid rotatable about a second arm axis 32.

The lever 2 can be fixed to the cabinet casing rotatably around a first lever axis 7 of a second hinge 8. Furthermore, the lever 2 is connected with the push element 3 rotatable around a second lever axis 9 .

The thrust element 3 has a partially cylindrical outer surface which forms a sliding surface 10. With this, the thrust element 3 is displaceably guided in a tube 11 of the first arm along a thrust axis 12. The thrust axis thrust 12 is arranged such that it remotely crosses the first arm axis 5. For this, the arm 1 has an articulation piece 43, which is fastened to an end 24 of the tube 11 and which protrudes transversely with respect to the thrust axis 12. The articulation piece 43 has a fixing projection 44, which protrudes in the direction of the thrust shaft 12, which is inserted into the tube 11. At the opposite end of the hinge piece 43 is provided a hinge hole 45, which houses a hinge pin 46 of the first hinge 6.

The arm 1, the lever 2, the thrust element 3, the first link 6 and the second link 8 therefore form a four-link mechanism in the form of an eccentric (offset) slide device. In this way, the arm 1 forms the slide device, the lever 2 the crank and the push element 3 the sliding block of the slide mechanism.

In order to generate a force acting against the weight of the lid, a gas spring 14 is provided, which is arranged inside the tube 11. In this case, a piston rod 13 is supported axially with respect to the thrust axis. 12, against the displacement element 3. A piston 15 of the gas spring 14 is fixed in the tube 12 at the free end 23 of the tube remote from the first joint 6. Consequently the pushing element 3 is forcefully loaded in the direction towards the end 24 of the tube 11 which is close to the first joint 6. Since in the assembled state the first lever axis 7 is arranged vertically below the first arm axis 5, it is generated, starting from an intermediate position according to Figure 3, which corresponds to the neutral position of the retaining element, in which the first arm axis 5, the first lever axis 7 and the second lever axis 9 are located on a common plane, a moment of rotation in the direction of the opening position of the retaining element.

Compared to helical springs, gas springs have a very flat elastic characteristic curve, so that the force generated by the gas spring varies only slightly during the variation of the spring travel or the spring travel. elevation. In particular, thanks to the use of a gas spring, the

The moment of rotation in the direction towards the open position is adjusted in such a way to the weight of the lid, that the lid is held in any desired position between the intermediate position and the open position.

In principle, it is also conceivable that the first lever axis 7 is arranged vertically above the first arm axis 5. In this case, the gas spring 14 must however be supported at the end 24 of the arm close to the first joint 6 and on the thrust member 3, to load the thrust member 3 towards the free end 23 of the tube 11. In this case, however, the lever 2 should be formed significantly longer, in order to be able to provide a sufficient space for the gas spring 14 between the thrust element 3 and the end 24 of the tube.

Furthermore, adjustment means 4 are provided, which comprise a support element 16, which has a base element 17 and a slide 18. The base element 17 carries the first articulation 6, while on the contrary the slide 18 carries the second hinge 8. The slide 18 can be adjusted in a guide 19, along an adjustment axis 20, with respect to the support element 16. With this, the distance between the first joint 6 and the second joint 8 or between the first arm axis 5 and the first lever axis 7 can be varied, in order to adapt the retaining element to different weights of the lid. Preferably, the adjustment axis 20 is oriented parallel or approximately parallel with the thrust axis 12, when the arm 1 is in the intermediate position (neutral position).

The support element 16 is fixed to a mounting plate 21. The mounting plate 21, the base element 17 and the skid 18 therefore form a constructive unit. The mounting plate 21 is likewise fixed adjustably to a fixing plate not shown, the fixing plate being able to be fixed directly to a side wall of a cabinet box.

The arm 1 has fixing means 22 for rotatingly fixing the free end 23 of the arm 1 to a cover.

Figures 5 to 7 show the retaining element according to Figures 1 to 4 in an application in which a lid 25 of a cabinet 26 is not directly rotatably attached to a cabinet box 27 of cabinet 26. This is exclusively attached by means of the retaining element. Figure 5 shows the retention element in the closed position. Figure 6 in the intermediate position and Figure 7 in the open position.

The mounting plate 21 of the retainer is fixed in such a way to a fixing plate 28 that the mounting plate 21 can be vertically adjusted and then fixed. The fixing plate 28 is fixed to a side wall 29 of the cabinet 26.

To the fixing plate 28 is further fixed a control arm 30 rotatable about a first control arm axis 31. The free end of the arm 1 is fixed to the cover 25, by means of the fixing means 22 in the form of a hole , rotatable about a second axis of arm 32. Also, control arm 30 is fixed to cover 25 rotatable about a second axis of control arm 33. The fixing element 34 is used for this, to which both the arm 1 and the control arm 30 are fixed, the fixing element 34 being fixed to an inner side 35 of the cover. For this purpose, the retaining element 34 has a first hole 36, to which the arm is rotatably attached. In addition, a second hole 37 and a third hole 38 are provided, which serve for the rotary connection of the control arm 30. In Figures 5 to 7 the control arm 30 is rotatably fixed to a second hole 27. The distances between the arm axes 5, 32 and the control axes 31, 33 are adjusted in such a way relative to each other, that the lid, as can be seen in Figure 7, tilts above the ceiling 39 of the cabinet 26.

If, on the other hand, the control arm 30 is connected in the third rotatable hole 38 with the fixing element 34 and thus with the cover 25, the distances of the axes 5, 31, 32, 33 are adjusted in such a way relative to each other, that the cover 25 is adjusted in parallel, as can be seen in Figure 10. Figure 8 shows in this case the retaining element in the closed position, Figure 9 in the intermediate position and Figure 10 in the open position.

Figures 11 to 13 show the retaining element according to Figures 1 to 4 in another application, in which the lid 25 is formed as a collapsible lid with a first lid element 40 and a second lid element 41. The first lid element Lid 40 is fixed, rotatable, directly to a cabinet box 27 of cabinet 26. The second lid element 41 is connected, by means of hinges 42, with the first lid element 40. Figure 11 shows the retainer in the closed position, Figure 12 in the intermediate position and Figure 13 in the open position.

The retaining element does not have a mounting plate, but is attached directly with the mounting plate 21 to the side wall 29 of the cabinet 26. To be able to vertically adjust the retaining element, however, a mounting plate can also be provided. fixation.

Also, unlike the previous application examples, no control arm is needed. The arm 1 of the retaining element is rotatably fixed directly to the lower end of the second cover element 41.

ES 2 313 632 T3

List of reference signs lever arm thrust element adjusting means first arm axis first joint first lever axis second joint second lever axis sliding surface tube thrust axis piston rod gas spring piston support element base element skid guide adjusting shaft mounting plate fixing means free end end cover cabinet cabinet box fixing plate side wall control arm first axis of control arm control second arm axis second control arm axis

ES 2 313 632 T3 fixing elements inside side first hole second hole third hole ceiling first cover element second cover element hinge hinge part fixing projection hinge hole hinge pin