The invention relates to a furniture fitting for the movable mounting of a furniture part, in particular a furniture flap, on a furniture panel. Furthermore, the invention relates to a furniture panel with at least one such furniture fitting, and a piece of furniture comprising such a furniture panel. The invention also relates to a method of producing a furniture fitting.
Furniture fittings of the above-mentioned type are already known in the state of the art. The publication WO 2017/143379 A1 discloses a furniture fitting for the movable mounting of a furniture part, in particular a furniture flap, on a furniture panel comprising a main body, at least one rotary lever and at least one bearing pin, wherein the at least one bearing pin is connected to the main body and/or to at least one base lever, wherein the at least one rotary lever has at least one hole and the at least one bearing pin passes through the at least one hole.
The inner surface of the hole is mounted here directly on the bearing pin. During a rotation of the lever this naturally leads to friction and thus to wear of the bearing pin and the inner surface of the hole during use of the furniture fitting. In order to avoid excessive wear, the bearing pin and the inner surface of the hole must therefore be manufactured from a hard or hardened material or be hardened at least in places. The bearing is usually lubricated for the same purpose.
The lever is typically relatively narrow, whereby the force transmission between the bearing pin and the inner surface of the hole takes place over a small bearing surface. Relatively high friction is therefore also to be expected. Even purely statically, a small bearing surface increases the surface pressure in the bearing, which can lead to deformation of the parts. Moreover, lubrication of such a bearing proves to be difficult because of the small bearing surface.
Starting from this state of the art, an object of the following invention is to create a furniture fitting, a furniture panel with a furniture fitting, a piece of furniture with a furniture fitting and a method for producing at least one furniture fitting, which at least partially overcomes or reduces the previously described disadvantages.
In particular, a furniture fitting for furniture panels and pieces of furniture is to be created which has a long service life and withstands high loads.
A furniture fitting according to the invention for the movable mounting of a furniture part, in particular a furniture flap, on a furniture panel comprises a main body, at least one rotary lever and at least one bearing pin. The at least one bearing pin is connected to the main body and/or to at least one base lever, and the at least one rotary lever has at least one hole and the at least one bearing pin passes through the at least one hole.
According to the invention, in at least one region surrounding the at least one hole, the at least one rotary lever has a widened portion, which extends at least in a direction parallel to a longitudinal axis of the at least one bearing pin.
Due to the enlargement of the bearing surface achieved thereby, the surface pressure is reduced and the friction is decreased. Furthermore, the bearing can be lubricated more easily.
The thus created bearing accordingly has a long service life and withstands large loads.
The widened portion on the at least one region of the at least one rotary lever surrounding the at least one hole is formed as at least one bearing bushing, wherein the at least one bearing bushing is arranged in the at least one hole. The widened portion can thus be realized simply and cost-effectively by an additional component.
In such an embodiment, the at least one bearing bushing can be connected to the at least one rotary lever and/or be passed through by the at least one bearing pin and/or be mounted rotatably with respect to the at least one bearing pin. A bearing with an enlarged bearing surface is thus formed by bearing bushing and bearing pin.
The at least one bearing bushing can be connected to the at least one rotary lever by pressing into the at least one hole of the at least one rotary lever. A simple type of connection is thus realized without additional connection means.
In an embodiment, the at least one bearing bushing is manufactured from steel. Due to the embodiment with a hard material, the wear of the bearing is kept low.
Preferably, the extent of the at least one bearing bushing in the axial direction is greater than the width of the at least one rotary lever, in particular at least five times greater. A widened portion of the inner surface of the hole is thus created, whereby the surface pressure and the wear of the bearing are reduced.
In an embodiment, the at least one bearing pin is formed as a rivet or as part of a rivet, preferably wherein the at least one bearing pin can be fastened to the main body or to the at least one base lever by orbital riveting. This represents a simple and cost-effective connection method.
At least one external spacer can be arranged between the at least one rotary lever and the main body and/or the at least one base lever, and preferably the at least one external spacer is formed as a ring and preferably wherein the bearing pin passes through the ring. The distance between the at least one rotary lever and the main body and/or the at least one base lever is thus kept constant, in particular the parts movable relative to one another thereby cannot rub against one another.
The external spacer formed as a ring can have an L-profile. Direct contact of the external spacer with the bearing bushing can thus be avoided.
In an embodiment, the furniture fitting comprises at least two rotary levers.
An internal spacer is preferably arranged between the at least two rotary levers. The internal spacer can be formed as a bushing, wherein the bushing is passed through by the bearing pin and the bearing bushing. The spacing of the at least two rotary levers is thus fixed.
Typically, the width of the at least one internal spacer substantially corresponds to the distance between the at least two rotary levers.
The internal diameter of a bushing used as an internal spacer can substantially correspond to the outer radius of the bearing bushing.
The at least two rotary levers can be connected via the widened portion in at least one region surrounding the at least one hole. A common widened portion of the at least two rotary levers is thus created, whereby the bearing surface can be enlarged more easily than in the case of a single lever.
The at least two rotary levers can be connected to one another away from the hole, preferably wherein the at least two rotary levers can be molded from one part, welded, screwed and/or riveted. A more stable multiple lever unit is thus created.
At least two rotary levers can be arranged parallel to one another. Multiple levers can thus be realized compactly.
At least two rotary levers can also be formed substantially identical, which reduces the production costs.
In an embodiment, a bearing bushing is arranged in the holes of the at least two rotary levers, with the result that the bearing bushing passes through the at least two rotary levers. A widened bearing and thus a larger bearing surface are thus created by means of a bearing bushing.
In an embodiment, the furniture fitting can comprise at least two base levers.
The at least one bearing pin passes through the at least two base levers. The bearing pin is thus held by both base levers.
The at least two base levers are connected to one another, preferably wherein the at least two base levers are molded from one part, welded, screwed and/or riveted.
It is envisaged that the at least two base levers are arranged parallel to one another and/or the at least two base levers are formed substantially identical. A cost-effective production and a compact arrangement of the base levers are thus made possible.
The at least one rotary lever and the at least one base lever are arranged nested along the longitudinal axis of the at least one bearing pin. A stable construction can thus be realized.
In an embodiment, the arrangement along the longitudinal axis of the at least one bearing pin has the following sequence:
For example, a bearing bushing can be pressed into the holes of the inner two rotary levers, whereby a double lever is created. Two base levers can be mounted rotatably outside via the bearing pin.
In an embodiment, the furniture fitting has at least one spring element, which does not necessarily have the properties of base lever or rotary lever. The spring element can be formed as an elastic lever, which is stretched between two bearings. A force is thus exerted on both bearings. In the case of a load change transverse to the direction of force, a jumping of a bearing pin in a hole and/or a bearing bushing can be avoided in this way, as the bearing pin slides along on the inner surface of the hole and/or the bearing bushing due to the force applied by the spring element.
The at least one rotary lever, the at least one base lever and the at least one spring element can be arranged nested along the longitudinal axis of the at least one bearing pin, preferably wherein an arrangement along the longitudinal axis of the at least one bearing pin has the following sequence:
In an embodiment, the at least one spring element can be mounted rotatably on the outside of the at least one bearing bushing. The bearing bushing thus functions as a bearing pin for the bearing between rotary lever and spring element. A rotation of the spring element with respect to the rotary lever is typically not provided in operation of the furniture fitting, but only for the installation of the spring element.
In an embodiment, the main body has a housing with at least two side walls, wherein the at least one bearing pin is arranged in at least two holes in the at least two side walls. At least one rotary lever, for example, can thus be mounted rotatably with respect to the main body.
A preferred arrangement along the longitudinal axis of the at least one bearing pin has the following sequence:
In an embodiment, the furniture fitting can have an actuating mechanism. A furniture part, for example, can thus be moved relative to the main body.
For the installation of the movable furniture part, the actuating mechanism has at least one installation lever, preferably wherein the installation lever functions as a rotary lever and/or base lever.
The actuating mechanism comprises a number of levers, wherein at least some of the number of levers are formed as base levers and/or rotary levers. The actuating mechanism thus has the above-mentioned advantages of the invention: it withstands higher loads, among other things, is easier to lubricate and wears more slowly.
At least one lever of the number of levers of the actuating mechanism can be formed as rotary lever and base lever. A lever can thus be connected at one end, for example, to a bearing bushing and function as a rotary lever, while the same lever can be connected at another end to a bearing pin and functions as a base lever.
In an embodiment, the main body has a, preferably mechanical, energy storage mechanism, wherein the coupling point of the energy storage mechanism on the actuating mechanism is adjustable on the front surface of the main body. In the installed position the main body thus only has to be accessible on its front surface.
In at least one position, preferably a closing position, the actuating mechanism can be arranged completely in the main body. The main body can thus be built in, for example into a furniture panel. Only one side, preferably the front face, must remain free.
According to an embodiment, the main body has a fastening device, wherein the fastening device is accessible from the front surface of the main body. Access to the fastening device is necessary for installation and disassembly. The main body can thus be built in, for example into a furniture panel, wherein only the front face of the main body remains free.
At least one nub can be provided on the side surfaces of the main body, whereby the main body can be supported on a furniture panel. The main body is thus safeguarded against tilting sideways.
The main body can have a housing, wherein the housing is open on the front face. In one position, preferably an open position, the actuating mechanism can thus protrude from the main body on the front face.
A furniture panel with at least one above-described furniture fitting is provided. A furniture part can thus be moved relative to the furniture panel.
In an embodiment of the furniture panel, the at least one furniture fitting is arranged at least partially in a recess in the furniture panel. The furniture fitting is thus at least partially integrated in the furniture panel. The furniture fitting can thus be arranged in a space-saving manner and so as not to be very visible.
The recess can be open towards at least a front face of the furniture panel and/or be open towards at least a side surface of the furniture panel. The furniture fitting is thus accessible from the front face and/or the side surface. Furthermore, the actuating mechanism can pivot out in the direction of the front face in order to move a movable furniture part.
A piece of furniture comprising at least one above-described furniture panel is provided. The thus created device has the advantages of the furniture fitting and the furniture panel.
The piece of furniture can comprise at least one movable furniture part, wherein the at least one movable furniture part is fastened to the piece of furniture by means of the at least one furniture fitting.
Here the at least one movable furniture part can be formed as a furniture flap. The furniture fitting can thus be used to bring about the opening and closing of a furniture flap.
The at least one furniture fitting can make a vertical opening of the at least one movable furniture part possible. A furniture flap can thus be opened vertically upwards (or downwards).
Further details and advantages of the invention are explained in more detail below by means of the description of the figures with reference to the drawings, in which:
On their front faces the side walls 5 have a recess 8, in which a furniture fitting 10 is countersunk. In
The furniture fitting 10 comprises a main body 11 and an actuating mechanism 12. In
The actuating mechanism 12 has an installation lever 28, on which a movable furniture part 9 can be installed. In the present embodiment, the movable furniture part 9 is formed as a furniture flap 4.
The furniture flap 4 can be opened vertically by the actuating mechanism 12 of the two furniture fittings 10. However, the furniture fitting 10 can also be used for a furniture door, wherein the furniture door is opened horizontally.
The recess 8 in the furniture panel 2, in which the furniture fitting 10 can be received, can be open, as in
An opening 17, through which the actuating mechanism 12 can protrude outwards in an open position, is provided on the front face 15.
In at least one position, preferably a closing position, the actuating mechanism 12 can be arranged substantially completely in the main body 11. If the furniture fitting 10 is integrated in a furniture panel 2, this construction is necessary.
The main body 11 has an energy storage mechanism 18, wherein the coupling point of the energy storage mechanism 18 on the actuating mechanism 12 is adjustable on the front face 15 of the main body 11. The adjustment can be effected via an adjustment part 33.
The main body 11 has a fastening device 19, wherein the fastening device 19 is accessible from the front face 15 of the main body 11. The main body can be fastened in the recess 8 of the furniture panel 2 with the fastening device 19.
The nubs on the side walls 14 of the main body 11 are not visible in
The actuating mechanism 12 comprises a number of levers 20, wherein at least some of the number of levers 20 are formed as base levers 22 and/or as rotary levers 21, wherein at least one lever 20 of the number of levers 20 is formed as a rotary lever 21 and base lever 22.
The levers 20 are connected to one another and/or to the side walls 14 of the main body 11 via bearings 30. For this purpose the levers 20 have at least one hole 23, which is passed through by a bearing pin 24.
The base levers 22 are connected fixedly to a bearing pin 24, while the rotary levers 21 are mounted rotatably on a bearing pin 24. One lever 20 of the number of levers 20 can have more than one, in particular two, bearings 30 and accordingly act as rotary lever 21 and base lever 22 at the same time.
Since the levers 20 are typically narrow, the bearing surface of bearings which are formed substantially by means of a bearing pin 24 is relatively small. The surface pressure and the friction on the bearing surfaces are thus great. In order to avoid excessive wear, a widened portion of the bearing surface is provided according to the invention.
In the embodiments of the following figures, the widened portion is realized by means of a bearing bushing 25, which is pressed into a hole 23 in a rotary lever 21.
A bearing 30 of the actuating mechanism 12 is shown in an exploded representation in
Here a bearing pin 24 is fixedly connected to the side walls 14 of the main body 11. Moreover, two rotary levers 21 are shown with in each case at least one hole 23. The bearing pin 24 passes in each case through a hole 23 of both rotary levers 21. In at least one region surrounding the at least one hole 23, the two rotary levers 21 have a widened portion 31, which extends at least in a direction parallel to a longitudinal axis of the at least one bearing pin 24.
In the embodiment in
In order to create a bearing 30 with an enlarged bearing surface, the bearing bushing 25 is passed through by the bearing pin 24 and is mounted rotatably on the bearing pin 24.
The connection between the rotary levers 21 and the bearing bushing 25 is achieved by pressing into the holes 23 of the rotary levers 21. The two rotary levers 21 thus form a double lever.
The two rotary levers 21 are arranged parallel to one another, and/or the at least two rotary levers 21 are formed substantially identical. The two rotary levers 21 can thus be manufactured cost-effectively and can be punched together, for example.
In order to realize a low-wear bearing 30, it is furthermore provided that the bearing bushing 25 is manufactured from steel.
In order to be able to connect both rotary levers 21 and to create a large bearing surface, the extent of the at least one bearing bushing 25 in an axial direction is greater than the width of the at least one rotary lever 21, in particular at least five times greater.
The bearing pin 24 is formed as a rivet 32 or as a part of a rivet 32 here. The fixing on the main body 11 is effected here by orbital riveting of the rivet on both sides. However, it can also be effected by orbital riveting on one side.
An external spacer 27 between the at least one rotary lever 21 and the main body 11 can also be seen from
It can also be seen in
The levers 20, both base levers 22 and rotary levers 21, can be formed differently.
As mentioned with regard to
At least two levers 20, base levers 22 or rotary levers 21, can be connected to one another away from a bearing 30, for example the at least two rotary levers 21 can be molded from one part, welded, screwed and/or riveted.
The levers 20 are arranged nested along the longitudinal axis of the at least one bearing pin 24.
A bearing 30 which connects a rotary lever 21 and a base lever 22 to one another rotatably relative to one another can also represent the fulcrum of a spring element 29. Here the spring element 29 is mounted rotatably on a widened portion 31, for example a bearing bushing 25, of the rotary lever 21.
The nested arrangement of the levers 20 can easily be seen from
Two rotary levers 21 arranged in parallel are shown, which are connected via a bearing bushing 25. Furthermore, the internal spacer 26, which is formed as a bushing, can be seen. The internal spacer 26 fixes the distance between the two rotary levers 21. The internal diameter of the internal spacer 26 substantially corresponds to the outer diameter of the bearing bushing 25.
The arrangement along the axis of symmetry, marked as a dotted line and corresponding to the longitudinal axis of the bearing pin 24 (not represented), has the following sequence:
The bearing bushing 25 is connected to the rotary lever 21 and mounted on the bearing pin 24. The bearing pin 24 is formed as a one-sided rivet. During an installation the rivet only has to be fastened on one side, for example by orbital riveting.
The arrangement along the longitudinal axis of the at least one bearing pin 24 (dashed line) has the following sequence:
The bearing bushing 25 is pressed, as in the case of the bearing 30 from section plane E, into the holes 23 of both rotary levers 21 and connects these. A bearing pin 24 formed as a one-sided rivet is visible in the bearing bushing.
On the outside of the bearing bushing 25, a spring element 29 is attached and mounted rotatably relative to the two rotary levers 21 and the two base levers 22.
The spring element 29 is formed as an elastic lever, which is stretched between two bearings 30. A force is thus exerted on both bearings 30. In the case of a load change, a jumping of the bearing pin 24 in a hole 34 and/or a bearing bushing 25 can be avoided in this way. In the present embodiment, the spring element is stretched between the two bearings 30 of the section planes A and C.
The position of the spring element 29 with respect to the bearing bushing 24 on which the spring element 29 is mounted rotatably is fixed by clamping. The rotatable mounting is thus used only during the installation of the actuating mechanism 12, but not in operation of the furniture fitting 10.
The arrangement along the longitudinal axis of the at least one bearing pin 24 has the following sequence:
The end of the spring element 29 which, with a hole arranged at the opposite end, is attached to the bearing bushing 25 of the bearing 30 of the section plane C is also visible.
A method for producing a furniture fitting 10 has the following method steps:
A first side wall 14 of the main body 11 is provided (see
In a further method step (see
In a further method step (see
In a further method step (see
In a last step, the second side wall 14 of the main body 11 is attached to the bearing pin 24. The bearing pin 24 is thus arranged between the two side walls 14 of the main body.
In
A rotary lever 21 with a hole 23 is provided (see
A bearing bushing 25 is introduced into the hole 23 (see
A spring element 29 is attached around the bearing bushing 25 (see
A second rotary lever 21 is arranged with a hole 23 such that the bearing bushing 25 is arranged in the hole 23 (see
In a further method step, the two base levers 22, which are connected to one another in this embodiment, are arranged around the bearing bushing 25 (see
The bearing pin 24 is inserted through the bearing bushing 25 and the holes 34 of the base levers 22.
Here the bearing pin 24 is formed as a one-sided rivet. The fastening of the rivet can be realized by orbital riveting.
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Number | Date | Country | Kind |
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A 50980/2020 | Nov 2020 | AT | national |
Number | Date | Country | |
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Parent | PCT/AT2021/060409 | Nov 2021 | WO |
Child | 18195120 | US |