KR20130137163A - Lifting system for furniture piece doors oscillating around a horizontal axis - Google Patents

Abstract

The lifting system for the piece door of the furniture vibrating around the horizontal axis is supported by a support lever for the doors 3, 7, 13 vibrating around the vibration pins 10, 20 arranged inside the shoulder 12 of the piece of furniture. 9, 19, the moment in the direction in which the doors 3, 7, 13 are closed in the closed position of the doors 3, 7, 13 and the doors 3, 7, 13 starting from the partially open position A first elastic device 24 operatively connected to the support levers 9, 19 of the doors 3, 7, 13 to provide a main moment in the open direction of the doors 3, 7, 13, and The oscillating pins 10, 20 in the opposite direction to the movement of the doors 3, 7, 13 through friction with the auxiliary moment in the opening direction of the door and / or friction with the support levers 9, 19. The shoulders 12 and the shoulders 12 respectively provide opposite moments along their oscillating arcs around the maximum extension of the doors 3, 7, 13 towards the outside of the piece of furniture. And a second elastic device operatively connected to the base support levers 9 and 19.

Description

LIFTING SYSTEM FOR FURNITURE PIECE DOORS OSCILLATING AROUND A HORIZONTAL AXIS}

The present invention relates to a lifting system for lifting a piece door of a furniture, in particular a door unit of a hood unit, which vibrates about a horizontal axis.

It is well known in the furniture industry to use lifting systems to support and vertically move the doors of kitchen hood units. Each of these systems includes one or more support levers connected between the furniture piece body and the door to be lifted in an articulated manner as well as acting to exert the necessary force for lifting the door. Electrically connected, for example, an elastic device, such as a gas spring.

Traditionally, the operative connection between such a lever and an elastic device is made via a vibrating intermediate member, which is connected to the intermediate member, which provides the support lever itself with the force of the elastic device. It has a roller acting on the cam of the support lever for transmission. Alternatively, the operative connection of the lever and the elastic device can be achieved directly by providing articulating pins to the support levers for connecting the rods of the elastic device itself pistons, the pins from the oscillating axis of the support levers. Placed at a distance, this solution is preferred because it is simpler to manufacture.

Within the area of such a lifting system, not only does it need to remain stationary at any position once the desired position is reached while the door is opened, but also the moment generated by the weight of the door, especially when such a lifting action occurs. In the region where s reaches a peak, it is necessary to control the lifting operation. In fact, the gas spring transmits a force that changes in a limited manner while it is being extended, so in such lifting systems, in particular when the gas spring is directly connected to the lever, While the torque applied is relatively overwhelming relative to the opposite torque due to the force of the weight of the door (s), in other opening arcs the torque is at maximum due to the weight of the door. Corresponding to the maximum extension of the hood unit towards the outside of the piece of furniture taking the weight, the torque of the spring is lower than that so that the hood unit may not be held in the desired position and may not be pushed to the maximum open position.

Moreover, in order to lift the door effectively, it is necessary to adapt the lifting force to the characteristics of the door, such as the weight, material, or thickness of the door.

Finally, through the use of such a system, over time, the technical problems found in phenomena such as the spring loses efficiency, the door cannot be lifted or the door cannot be held in the lifted position, and the door itself may fall. It could be observed.

The main object of the present invention is therefore to provide a lifting system which can solve the above-mentioned problems and meet the needs of the user.

Within the scope of this technical problem, one object of the present invention is to provide a piece of furniture door vibrating around a horizontal axis, which allows precise control of the lifting of the door and allows the effectiveness of such control to be maintained over time. To realize the lifting system.

Other objects as well as this technical task are achieved according to the invention by realizing a lifting system for a piece door of furniture which vibrates about a horizontal axis,

The lifting system starts with a support lever of a door that vibrates around a vibrating pin disposed inside a shoulder of a piece of furniture, a moment in the direction in which the door is closed from a closed position, and from the position in which the door is partially opened. And a first elastic device operatively connected to the support lever of the door to provide a main moment in the direction of opening the door,

Through the friction against the support lever in the direction opposite to the action of closing the door along the vibrating arc around the maximum extension of the door towards the outside of the furniture piece, and / or in the direction of the door opening with respect to the vibrating pin, respectively. It is characterized in that it comprises a second elastic device operatively connected to the shoulder and the support lever to provide a force suitable for generating an opposite moment of.

The auxiliary opening moment is added to the opening moment generated by the first elastic device, while the friction moment is between the moment generated by the force of the first elastic device and the weight to maintain the hood unit in equilibrium. Any difference is complemented and suitable for opposing movement of the hood unit.

The second resilient device is configured to provide an auxiliary moment to the vibrating arc of the door in the direction of the door opening, which is combined with the main moment in the direction of the door opening due to the force of the weight of the door and other components incorporated therein. Is greater than or equal to the moment in the closing direction.

Preferably, the second elastic device has means for regulating its own forces which generate the auxiliary moment and / or the opposite moment.

Through such adjusting means, it is possible to actuate the device to change its behavior depending on whether the door is desired to remain in equilibrium in several partially opened positions or whether the door is desired to continue to move at greater or smaller speeds. Do.

The adjusting means is also particularly advantageous for tailoring the operation of the device to doors of different weights of different materials or thicknesses.

Preferably, the second elastic device has a friction surface that is slidable along the cam provided to the support lever.

Preferably, the second elastic device includes a leaf spring having the friction surface.

Preferably, the leaf spring has a configuration of an angle limiting the first spring and the second spring arm with the friction surface.

Preferably, said adjusting means comprises an element for adjusting the pre-compression of said leaf spring.

Preferably, said adjusting means comprises an eccentric operatively connected with said second arm of said leaf spring.

In another embodiment, the second resilient device includes elements in contact with the area of the cam having a differential friction and in particular made of a different material, as a substitute for or in combination with the adjustment element.

Further features and advantages of the present invention will become more apparent from the description of the preferred but not limited embodiment of the lifting system for a piece door of furniture which vibrates about a horizontal axis according to the present invention. It is illustrated through the attached non-limiting example.

1 shows a side view of a double door hood unit with a lifting system for a double door according to the invention when the double door is in the closed position.

FIG. 2 is a side view of FIG. 1 showing when the double door is in a partially open position.

3 is a side view of FIG. 1 showing when the double door is in the fully open position.

4 is an enlarged detail view of the hood unit of FIG. 1 when the eccentric device is in a first position to control the compression of the leaf spring and the double door is in a closed position.

FIG. 5 is an enlarged detail view of the hood unit of FIG. 3 when the eccentric device is in a first position to control the compression of the leaf spring and the double door is in an open position.

FIG. 6 is an enlarged detail of the hood unit of FIG. 3 when the eccentric is in a second position corresponding to greater compression of the leaf spring compared to the first adjustment position and the double door is in an open position.

7 is a side view of a single door hood unit with a lifting system according to the invention in a closed position door;

8 is a side view of the hood unit of FIG. 7 in the open position of the door.

FIG. 9 shows a schematic illustration of the trend of the moment applied to the double door, depending on the opening angle of the upper door, and also with the change of adjustment by the eccentric.

FIG. 10 shows schematically a trend of the moment applied to the double door depending on the opening angle of the upper door and with the change in gas spring performance.

Equivalent parts in the two versions of the lifting system of the illustrated hood unit will be denoted by the same reference numerals.

The cited figures show a lifting system for a door of a furniture product, such as a hood unit, with the axis oscillating around the horizontal axis in mind.

In connection with the embodiment shown in FIGS. 1 to 6, the hood unit 2 has one or more upper doors 3, which have one or more known types of hinges 4. Bound to the inside of the top 5 of the hood unit 2, to the lower door by another or more known types of hinges 6, and then to at least one To the support lever 9, it is bound by a decelerated hinge 8 of known type located inside the door 7.

This support lever is fastened to a plate 11 applied inside the shoulder 12 of the hood unit by a vibrating pin 10 on the opposite side of the hinge-joined portion.

The vibration shafts defined by the vibration pin 10 and the hinges 4, 6, and 8 all take horizontally parallel directions in the width direction of the hood unit 2.

In connection with the embodiment shown in FIGS. 7 and 8, the hood unit 23 is bound by one or more known types of reduction hinges 14 inside the top 15 of the hood unit 23, Single door 13 bound to plate 21 applied inside shoulder 22 of hood unit 23 by at least one kinematic chain comprising connecting rod 17 and support lever 19. Has

In particular, the door 13 is bound to one end of the connecting rod 17 by at least one known type of hinge 16, the other end of which is again bound to the support lever 19 by means of a vibration pin 18. It is again bound to the plate 210 by the vibration pin 20.

The vibrating shafts provided by the vibrating pins 18 and 20 and the hinges 14 and 16 all take a horizontally parallel direction in the width direction of the hood unit 2.

The hood unit 2 and the hood unit 23 have respective systems for moving the doors 3 and 7 and the door 13, respectively, which doors are closed for the doors 3 and 7 and the door 13 respectively. To provide a moment in the respective closing direction in the position, and in the opening direction of the doors 3, 7 and 13, respectively, starting from the partially open position of the doors 3, 7 and 13, respectively. In order to provide the main moment, a first elastic device is operatively connected to the support lever 9 and the support lever 19, respectively.

An elastic device of each of the hood unit 2 and the hood unit 23 includes a gas spring 23 having a cylinder 25 provided with a lever support on the plate 11 and the plate 26 by vibrating pins 26, respectively. , The support rod 9 and the support lever 19 includes a piston rod 27 provided with a pedestal with vibrating pins 28, respectively.

The vibrating pins 26 and the vibrating pins 28 of the elastic device of the hood unit 2 and the hood unit 23 are parallel to the pin 10 and the pin 20, respectively.

The system for moving each of the doors 3, 7 and 13 is supported in the open direction of each of the doors 3, 7 and 13 along its vibrating arc, starting from its partially open position. Further providing a second elastic device operatively connected to the support lever 9 and the support lever 19, respectively, to provide auxiliary moments of elastic and / or frictional forces acting on the lever 9 and the support lever 19, respectively. Include.

Preferably, the vibrating arcs of each of the doors 3 and 7 and the door 13 on which the second resilient device operates are around a maximum extending position towards the outside of the furniture piece of the door, where The closing moment exerted by the force of the weight of each of the doors 3, 7 and the door 13 and the other members incorporated therein has a maximum value. The second resilient device may be configured to transmit an auxiliary moment in the open direction in the vibrating arc of each of the doors 3, 7 and 13, which merges with the main moment in the open direction and acts. Considering the frictional force, the moment in the closing direction of each of the doors 3, 7 and 13 is exceeded due to the force of the weight of the door and the other members integrated therewith.

In such a case, the second elastic device ensures a continuous opening operation of each of the doors 3, 7 and the door 13.

However, the second elastic device may alternatively be configured to transmit an auxiliary moment in the open direction in the vibrating arc of each of the doors 3, 7 and 13, which is combined with the main moment in the open direction and acts. Considering the frictional force, the weight of the doors and the other components integrated therewith is quite balanced with the moments in the closing direction of the doors 3, 7 and 13, respectively.

In such a case the second resilient device ensures a stable state in several partially open positions of the doors 3, 7 and 13, where the doors are in the reached position if the user is holding and releasing. Will be stopped.

In particular, the second elastic device is provided with a special adjusting means, whereby the value of the auxiliary moment transmitted as seen from behind can be adjusted.

In the illustrated embodiments the second resilient device comprises a leaf spring 29 having a friction surface 30 which is slidable along a cam 31 provided on each of the support lever 9 and the support lever 19. .

The cam 31 is defined by a profile of a specific surface at each end of the support lever 9 and the support lever 19, which may be coated with different materials and respectively the vibrating pins 10 and It has a vibration pin (20).

The cam 31 has a neutral section defining a circumferential arc centered on each of the vibrating pin 10 and the vibrating pin 20, along which it is carried by the leaf spring 29. An elastic force is directed radially to each of the vibration pins 10 and the vibration pins 20 of each of the support levers 9 and 19, and has an active section of another radius of curvature, The elastic force transmitted by the leaf spring 29 along this demonstrates a moment arm for each of the vibration pin 10 and the vibration pin 20 of each of the support levers 9 and 19.

The leaf spring 29 has an angular shape defining a first spring arm 32 and a second spring arm 33 having a friction surface 30.

The leaf spring 29 has an intermediate curved portion 34 from which the first spring arm 32 and the second spring arm 33 extend opposite, both extending in a straight line.

The intermediate curved portion 34 is fixed to each plate 11 and the plate 21 and a block 35 disposed on the concave surface of the intermediate curved portion 34 and the intermediate curved portion. It is fixed between each plate 11 and the orthogonal tab 36 of the plate 21 arranged on the convex side of the 34.

The means for adjusting the auxiliary moment delivered by the first elastic device can take other forms.

The adjusting means in fact comprise elements for precompression adjustment to the leaf spring 29 in the respective closed positions of the doors 3, 7 and the door 13.

The adjusting element in particular comprises an eccentric 37 which is operatively connected with the second spring arm 33.

The eccentric device 37 is connected to the plate 11 and the plate 21 by levers, respectively, by a vibration pin 38 parallel to the vibration pin 10 and the vibration pin 20, respectively, of 180 ° A first adjustment position (FIG. 4) suitable for performing eccentric vibration, corresponding to the lower precompression of the second spring arm 33, and a second adjustment corresponding to the upper precompression of the second spring arm 33. Limited by a particular stop 39 between positions.

The adjusting means may comprise, as an alternative to or in combination with the eccentric device 37, regions of the cam 31 having differential friction, in particular regions of the cam 31 made of a different material. have.

Referring now to FIG. 9, there is shown a trend of moments applied to the double doors 3, 7 of the hood unit of FIGS. 1-6 according to the opening angle of the upper door 3, where α 1 represents the second elastic device operating. Indicates the opening angle.

When the opening angle is smaller than α1, the trend of the moment generated by the first elastic device is represented by a thin solid line, and when the opening angle is larger than α1, it is indicated by a thick solid line.

The thick solid line represents the moment trend in the closing direction of the doors 3, 7 due to the weight of the doors 3, 7 and the parts lifting with them (eg hinges 6, 8).

The thin solid line is generated by the combination of the first elastic device and the eccentric device 38 in the first adjustment position, and by the second elastic device for opening an opening angle greater than α1, the doors 3 and 7. Indicates the moment trend in the direction of opening.

The dashed line is generated by the combination of the first elastic device and the eccentric device 38 in the second adjustment position, and by the second elastic device for opening an opening angle greater than α1, the doors 3 and 7. Indicates the moment trend in the direction of opening.

The moment generated by the first elastic device at the closing angle (origin in the graph) is negative. It acts in the closing direction of the doors 3, 7.

Once a certain angle α2 is reached, the moment generated by the first elastic device becomes zero (the operating line with respect to the support lever 9 of the gas spring piston 27 is connected to the support lever 9). Radially directed against the oscillating pin 10), if it exceeds the angle α2 it becomes positive. That is, it operates in the opening direction of the doors 3 and 7 (the operation line for the support lever 9 of the gas spring piston 27 is opposite from the radial direction of the vibration pin of the support lever 9 from one side thereof. To pass).

The moment in the closing direction due to the weight up to the opening angle α3 is greater than the moment in the opening direction exerted by the first elastic device, so that the opening of the doors 3 and 7 must be assisted by the user.

Once the opening angle α3 is exceeded, the moment in the opening direction exerted by the first elastic device exceeds the moment in the closing direction due to the force of the weight and the opening is continued without the need for user intervention.

Once the opening angle α1 is also exceeded, a second concurrent moment exerted by the first elastic device is added to the moment in the open direction exerted by the first elastic device.

The second resilient device preferably operates towards the outside of the furniture piece when the moment in the closing direction generated by the force of the weight has a maximum value around the maximum extending position of the door.

If there is no second elastic device, the moment in the opening direction of the doors 3 and 7 due to the first elastic device alone will be insufficient to overcome the moment in the closing direction due to the force of the weight. This is explained by the fact that when the opening angle in the graph is greater than α4, the curve representing the former lies below the curve representing the latter.

For opening an angle greater than α1, the graph shows the moment curve in the open direction created by the combination of the first elastic device and the second elastic device in which the eccentric device 37 is in the first adjustment position, and the force of the weight. The portion where the moment curve in the closing direction generated by the overlaps is shown.

In this overlapping portion, the doors 3 and 7 exhibit a partially open stable position in the absence of user intervention.

If the user adjusts the eccentric 37 to a second adjustment position corresponding to a greater preliminary compression of the leaf spring 29 and consequently to a greater elastic force transmitted by the cam 31, The moment of the opening direction generated by the first and second elastic devices becomes relatively larger than the moment of the closing direction generated by the force of the weight, and the doors 3 and 7 can be intervened by the user. Automatically fully open without the need.

Referring now to FIG. 10, the trend of moments applied to the double doors 3, 7 of the hood unit of FIGS. 1-6 according to the opening angle of the upper door 3 and the varying performance of the first elastic device. It is well known that gas springs, in particular, can degrade gradually over time as a result of small leaks of gas.

The solid line represents the trend of the moment generated by the first elastic device at maximum efficiency, and the dashed line represents the trend of the moment generated by the first elastic device after the efficiency is lost.

The thick solid line represents the moment trend as the closing direction of the doors 3, 7 due to the force of the weight of the doors 3, 7 and the parts integrated therewith.

The dashed-dotted line indicates the opening direction of the doors 3 and 7, which is generated by the combination of the first elastic device and the second elastic device to open an angle larger than α1, which is the angle at which the movement of the second elastic device is first induced. Indicates a trend to

The graph indicates that once the opening angle α4 is exceeded, the moment in the closing direction due to the force of the weight will exceed the moment in the opening direction applied by the first elastic device. It is shown that full automatic opening of the doors 3 and 7 cannot be achieved without the aid of an elastic device.

The second resilient device is preferably adapted to continuously move the doors 3 and 7 toward the fully open position without user intervention (as shown in the graph of FIG. 10). The curve representing the moment of the open direction generated by the combination of is always above the curve representing the moment of the closed direction generated by the force of the weight), or to move through the stable partial opening positions (in the graph of FIG. 9). As shown, the curve representing the moment in the open direction generated by the combination of the first and second elastic devices can be adjusted), and overlaps the curve representing the moment in the closed direction generated by the force of the weight. Should be.

It has been found practically that the lifting system for the furniture piece according to the invention is suitable for ensuring complete control over the opening of the door.

The lifting system for the door of the furniture piece is designed to enable many changes and modifications within the scope of the inventive concept, and the details can also be replaced by other technically equivalent elements.

The materials and values used can be adapted to suit the needs and skill levels.

Claims (13)

Support levers 9 and 19 for the doors 3 and 7, 13 oscillating around the vibration pins 10 and 20 arranged inside the shoulder of the piece of furniture, and the doors 3 and 7, 13 To provide the moment in the direction in which the door is closed in the closed position and the main moment in the direction in which the doors 3, 7, 13 open, starting from the position in which the doors 3, 7, 13 are partially open. In the lifting system for a piece of furniture door vibrating about a horizontal axis having a first elastic device 24 operatively connected to the support levers 9, 19 of the doors 3, 7, 13,
The system applies its vibrating arc around the maximum extension of the doors 3, 7 and 13 toward the outside of the piece door of the furniture and / or the auxiliary moment in the direction in which the door is opened against the vibrating pins 10, 20. The shoulder 12 to supply a force suitable for respectively generating an opposite moment through friction against the support levers 9, 19, in the opposite direction of the closing movement of the doors 3, 7, 13, accordingly. And a second elastic device operatively connected to the support levers 9 and 19;
Lifting system for the piece door of the furniture vibrating about a horizontal axis comprising a.
2. The second elastic device according to claim 1, wherein the second elastic device is configured to provide an auxiliary moment in the vibrating arc of the doors 3, 7, 13 in the direction in which the doors 3, 7, 13 open. The sum of the auxiliary moment and the main moment in the open direction of the doors 3, 7 and 13 is due to the force of the weight of the doors 3, 7 and 13 and the other parts integrated therewith. Lifting system for a piece door of furniture vibrating about a horizontal axis, characterized in that it is greater than the moment in the closing direction of 7, 7, 13).
3. The second elastic device according to any one of the preceding claims, wherein the second resilient device is assisted in the direction in which the doors (3, 7, 13) open in the vibrating arc of the doors (3, 7, 13). Configured to provide a moment, wherein the sum of the auxiliary moment and the main moment in the open direction of the doors 3, 7, 13, to obtain a plurality of stable partially open positions of the doors 3, 7, 13. In order to balance a moment in the closing direction of the doors 3, 7, 13 due to the force of the weight of the doors 3, 7, 13 and the other parts integrated therewith. Lifting system for piece doors of vibrating furniture.
The piece door of a furniture vibrating about a horizontal axis according to any one of the preceding claims, characterized in that the second resilient device has means for adjusting its own force which generates the auxiliary moment and / or the opposite moment. Lifting system. The furniture according to one of the preceding claims, characterized in that the second resilient device has a friction surface (30) which is slidable along a cam provided on the support levers (9, 19). Lifting system for one-piece doors.
6. Lifting system according to claim 5, characterized in that the second elastic device comprises a leaf spring (29) having the friction surface (30).
The horizontal axis of claim 6, wherein the leaf spring has an angled shape defining a first spring arm 32 and a second spring arm 33 having the friction surface 32. Lifting system for piece doors of furniture vibrating around.
8. The vibrating furniture according to claim 5, wherein the second resilient device comprises elements which abut against the areas of the cam 31 with friction. Lifting system for one-piece doors.
10. Lifting system according to claim 8, characterized in that the areas of the cam (31) with differentiated friction are made of different materials.
10. Lifting system according to any one of claims 6 to 9, characterized in that the adjusting means comprises an element for adjusting the compression of the leaf spring (29).
11. Vibrating about a horizontal axis according to claim 7 to 10, characterized in that the adjustment element comprises an eccentric device (37) operatively connected to the second arm (33) of the leaf spring (29). Lifting system for piece doors of furniture.
A lifting system for a piece door of a furniture vibrating about a horizontal axis according to claim 1, wherein said first elastic device comprises a gas spring.
A furniture piece, having one or more doors oscillating about a horizontal axis, having a lifting system according to any one of the preceding claims.

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