EP0417822A1 - Actuation device with variable balancing for sliding doors of furniture - Google Patents
Actuation device with variable balancing for sliding doors of furniture Download PDFInfo
- Publication number
- EP0417822A1 EP0417822A1 EP90202170A EP90202170A EP0417822A1 EP 0417822 A1 EP0417822 A1 EP 0417822A1 EP 90202170 A EP90202170 A EP 90202170A EP 90202170 A EP90202170 A EP 90202170A EP 0417822 A1 EP0417822 A1 EP 0417822A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- furniture
- balancing
- actuation device
- item
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
- E05D13/10—Counterbalance devices
- E05D13/12—Counterbalance devices with springs
- E05D13/1207—Counterbalance devices with springs with tension springs
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D15/00—Suspension arrangements for wings
- E05D15/16—Suspension arrangements for wings for wings sliding vertically more or less in their own plane
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D15/00—Suspension arrangements for wings
- E05D15/16—Suspension arrangements for wings for wings sliding vertically more or less in their own plane
- E05D15/165—Details, e.g. sliding or rolling guides
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/20—Application of doors, windows, wings or fittings thereof for furnitures, e.g. cabinets
Definitions
- This invention relates to an actuation device with variable balancing for sliding doors of furniture and the like, especially of the type having shelves.
- Said device must be of small bulk and weight, capable of being housed in correspondence with the lateral wall of the furniture, a wall which in any case must be present as it constitutes the load-bearing structure of same, and which shall be easy to install and maintain and of low cost.
- an actuation device which provides means for balancing variable forces, especially for sliding doors of furniture, comprising supporting and guiding means for the sliding door, capable of engaging with movable suspension means adapted for enabling said door to be moved in translatory motion, said movable suspension means being firmly attached to elastic means adapted for imparting to said suspension means a variable reaction force, which in every possible position and at every instant balances the forces acting on them.
- said supporting and guiding means for the sliding door are preferably constituted, for each side of the door, of a vertical carriage integral with the edge of said door, slidable on the side of the furniture item along lateral guides perpendicular to one another and fitted to the side of the furniture, and having a horizontal arm orientated towards the back wall, said arm bearing upon a wheel attached to a suspension link, onto which the weight of the door is transferred, said suspension link being, in turn, articulated to the free end of a rod pivotally mounted on the side wall of the furniture item, said free end being also connected to elastic reaction means for the automatic and instantaneous balancing of the weight of the door in whatever position it is situated.
- said elastic reaction means shall be preferably constituted of a spring or the like, having one end fixed in adjustable manner to the wall of the furniture item and the other end to the free end of said rod, it being possible for said spring to be arranged with a variable line of action depending upon the position of the point of attachment to said rod, which in turn can be varied with the position of the door.
- the actuation device with variable balancing 1 is composed a rod 2 having one end 2a pivotally mounted in a predetermined position fixed to the side wall 100a of the furniture item 100, the other end 2b of said rod being free and having, articulated to it, a link 3, the free end of which supports a wheel 4, engaged to run on a horizontal arm 5 of a carriage 6 with vertical direction of travel, to which is attached one edge of the vertically slidable door 7.
- the suspension carriage 6 for the door 7 is guided on its vertical travel by two pairs of wheels 8a, 9a and 8b, 9b, disposed at 90° to one another and mounted on the carriage 6, which run in two guides 10 and 11 of a profile member 10a fixed to the side of the furniture item, thus assuring perfect linearity of the displacement and the absence of skidding during said travel.
- the couple to be balanced is given by the product of the constant weight P times the arm D j .
- the balancing action of the spring 12, acting along the line of action 12c varies with the position of the end 2b of the rod 2 and will increase linearly with the extension of the spring during the travel of the rod 2, while the lever arm "d i " will decrease with the same movement of the rod 2.
- FIG 4 there is shown a variant of the device according to this invention, which can be used in the case of a double door 7′; in this case, the carriage 6 is attached to the door 7′ in an intermediate position and bears on a wheel 4′, attached to one end of a cable 15, fixed at its other end to the side of the item of furniture and passing over a pulley 16, connected to the lever 2 in the form of a simple tackle.
- said elastic reaction means may be realized by means of equivalent elements, such as air springs, fluid springs, rubber springs or the like, of known type adapted for providing an action which varies with the extension and a line of action which also is variable, but in the opposite sense for the purpose of achieving at every instant and in every position the balancing of the couples acting on the rod 2.
Abstract
Description
- This invention relates to an actuation device with variable balancing for sliding doors of furniture and the like, especially of the type having shelves.
- Many devices are known in the art for balancing sliding doors for closing items of furniture, which are normally based on the use of counterweights which, in addition to causing a doubling of the mass with consequent in crease in the total weight of the product and of the inertia of the doors themselves, need to be housed in the back walls of the furniture, thereby requiring the provision of said wall, even when this would not be necessary, and causing a reduction in the effective useful space of the item of furniture or, in contrast, an increase in the overall bulk of the furniture for a given available useful space.
- The problem therefore arises of creating an actuation device which, in every position, shall maintain in equilibrium the forces acting on sliding doors of items of furniture and the like, especially of the type comprising shelves, for the purpose of keeping to a minimum the force to be exerted by the user for raising and lowering the door.
- Said device must be of small bulk and weight, capable of being housed in correspondence with the lateral wall of the furniture, a wall which in any case must be present as it constitutes the load-bearing structure of same, and which shall be easy to install and maintain and of low cost.
- This technical problem is solved by an actuation device according to this invention, which provides means for balancing variable forces, especially for sliding doors of furniture, comprising supporting and guiding means for the sliding door, capable of engaging with movable suspension means adapted for enabling said door to be moved in translatory motion, said movable suspension means being firmly attached to elastic means adapted for imparting to said suspension means a variable reaction force, which in every possible position and at every instant balances the forces acting on them.
- According to the present invention, said supporting and guiding means for the sliding door are preferably constituted, for each side of the door, of a vertical carriage integral with the edge of said door, slidable on the side of the furniture item along lateral guides perpendicular to one another and fitted to the side of the furniture, and having a horizontal arm orientated towards the back wall, said arm bearing upon a wheel attached to a suspension link, onto which the weight of the door is transferred, said suspension link being, in turn, articulated to the free end of a rod pivotally mounted on the side wall of the furniture item, said free end being also connected to elastic reaction means for the automatic and instantaneous balancing of the weight of the door in whatever position it is situated.
- Said link with its associated wheel, on which each edge of the door rests in slidable manner, always remains in a vertical position, transferring the weight of the door in a constant manner in regard to both value and direction.
- It is also arranged that said elastic reaction means shall be preferably constituted of a spring or the like, having one end fixed in adjustable manner to the wall of the furniture item and the other end to the free end of said rod, it being possible for said spring to be arranged with a variable line of action depending upon the position of the point of attachment to said rod, which in turn can be varied with the position of the door.
- These and other characteristics will become more evident from the following description of an example of embodiment of an actuation device with variable balancing according to this invention, the description having been prepared with reference to the attached drawings, in which there are shown:
- in Figure 1: a side view of the device on one internal side of the furniture item and in a position corresponding to the door fully raised;
- in Figure 2: the device of Figure 1, seen in a position corresponding to the door fully lowered;
- in Figure 3: a section on the plane III-III of Figure 2;
- in Figure 4: a view of a variant of the device according to this invention, which can be used in the case of a door having twice the distance of travel.
- With reference to the figures, the actuation device with variable balancing 1, according to this invention, is composed a rod 2 having one end 2a pivotally mounted in a predetermined position fixed to the
side wall 100a of thefurniture item 100, the other end 2b of said rod being free and having, articulated to it, alink 3, the free end of which supports awheel 4, engaged to run on a horizontal arm 5 of acarriage 6 with vertical direction of travel, to which is attached one edge of the vertically slidable door 7. - As can be more readily seen from Figure 37 the
suspension carriage 6 for the door 7 is guided on its vertical travel by two pairs of wheels 8a, 9a and 8b, 9b, disposed at 90° to one another and mounted on thecarriage 6, which run in twoguides profile member 10a fixed to the side of the furniture item, thus assuring perfect linearity of the displacement and the absence of skidding during said travel. - At the free end of the rod 2 there is also attached the
end 12a of aspring 12, of which the other end 12b is attached to the side of the furniture item by means of anadjustable fixing 13; saidspring 12 extending between one end and the other with bearing on an idling change-direction pulley 14, on which it can run and which makes possible a greater effective length. The arrangement of the arm of the spring connected to the rod 2 in the initial direction is intended for the uppermost position of the door 7. - When the door passes from the fully raised position of Figure 1 to the fully lowered position of Figure 2, the free end of the rod 2 completes an arc of a
circle 2c (indicated in broken line), along which a constant weight force P is applied, which generates a moment proportional to the distance Dj, which varies during the entire travel. - Because of the displacement of the point of action 2b of the
suspension link 3 along thearc 2c with the rotation of the rod 2, the couple to be balanced is given by the product of the constant weight P times the arm Dj. The balancing action of thespring 12, acting along the line ofaction 12c, varies with the position of the end 2b of the rod 2 and will increase linearly with the extension of the spring during the travel of the rod 2, while the lever arm "di" will decrease with the same movement of the rod 2. - In this way a moment is generated between the fixed centre of rotation of the rod 2 and the line of action of the
spring 12, which moment is applied to the end of the rod 2 in such a way as to balance, instant by instant, the aforementioned variable couple generated by the weight of thedoor 6 during the travel of the rod 2. - The values of the forces in play and of the action arms are, of course, dependent upon the dimensions of travel and upon the weight of the doors which make up the furniture item.
- In Figure 4, there is shown a variant of the device according to this invention, which can be used in the case of a double door 7′; in this case, the
carriage 6 is attached to the door 7′ in an intermediate position and bears on awheel 4′, attached to one end of acable 15, fixed at its other end to the side of the item of furniture and passing over apulley 16, connected to the lever 2 in the form of a simple tackle. - In this manner there is obtained, by means of the transmission system described, a doubling of the effective travel of the door, without changing the total angular movement of the rod 2.
- Given the possibility of variation in forces in action and the frictions which the moving elements encounter, even if the arrangement of the elements according to this invention remains fixed for each item of furniture, it is always possible for the reaction force provided by the elastic means for balancing the door in every position to be different, even though by only a small amount, from one case to another. For the purpose of achieving perfect balancing when the device is installed, it is provided, in the case where a
spring 12 is used as in the example shown, that the end 12b connected to thepin 13 shall be capable of being displaced by acting on the fixing itself, in this way varying the initial tension of thespring 12. - Furthermore, said elastic reaction means may be realized by means of equivalent elements, such as air springs, fluid springs, rubber springs or the like, of known type adapted for providing an action which varies with the extension and a line of action which also is variable, but in the opposite sense for the purpose of achieving at every instant and in every position the balancing of the couples acting on the rod 2.
- It will be understood that other variants of a constructional nature may be provided, without thereby departing from the scope of protection of the present invention.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2172989U IT216856Z2 (en) | 1989-09-15 | 1989-09-15 | VARIABLE BALANCING OPERATING DEVICE FOR SLIDING DOORS OF FURNITURE. |
IT2172989U | 1989-09-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0417822A1 true EP0417822A1 (en) | 1991-03-20 |
EP0417822B1 EP0417822B1 (en) | 1993-11-10 |
Family
ID=11186041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900202170 Expired - Lifetime EP0417822B1 (en) | 1989-09-15 | 1990-08-10 | Actuation device with variable balancing for sliding doors of furniture |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0417822B1 (en) |
DE (1) | DE69004534T2 (en) |
ES (1) | ES2045767T3 (en) |
IT (1) | IT216856Z2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993018263A1 (en) * | 1992-03-11 | 1993-09-16 | Erica Gem Pty. Ltd. | Biasing device |
FR2781004A1 (en) * | 1998-07-08 | 2000-01-14 | Cabines Denizet Sa | Retention device for holding sliding vehicle doors in an open or closed position |
EP0976907A2 (en) * | 1998-07-28 | 2000-02-02 | Arturo Salice S.p.A. | Actuator for a vertically slidable closure element |
US6243988B1 (en) | 1998-07-28 | 2001-06-12 | Arturo Salice S.P.A. | Actuating device for a closing element movable in a vertical direction |
WO2001081698A1 (en) * | 2000-04-19 | 2001-11-01 | Ashland Products, Inc. | Balance system for sash window assembly |
FR2886969A1 (en) * | 2005-06-10 | 2006-12-15 | Airbus Sas | Door of baggage compartment used in aircraft cabin, has guide system which extends vertically in different orientation using vertical guide rail and slideway |
US7744035B2 (en) | 2005-06-10 | 2010-06-29 | Airbus | Door for compartment of the baggage-compartment type |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB382220A (en) * | 1931-04-24 | 1932-10-20 | Henri Joseph Prosper Poitevin | Improvements in or relating to arrangements for balancing articles subjected to constant forces |
GB754832A (en) * | 1953-02-04 | 1956-08-15 | Henri Jacques Marc Lambert | Improvements in or relating to cupboards and the like |
FR2451987A1 (en) * | 1979-03-23 | 1980-10-17 | Horster Volkhard | SET OF CONSTRUCTION FITTINGS FOR FURNITURE INCLUDING DOORS, SHELVES, MOBILE CABINET ELEMENTS, OR THE LIKE |
DE2922780A1 (en) * | 1979-06-05 | 1980-12-11 | Werner Bruno | Cupboard with vertically sliding doors - has doors moving along guide pieces, and has weight balance using cables, roller and spring |
-
1989
- 1989-09-15 IT IT2172989U patent/IT216856Z2/en active
-
1990
- 1990-08-10 EP EP19900202170 patent/EP0417822B1/en not_active Expired - Lifetime
- 1990-08-10 ES ES90202170T patent/ES2045767T3/en not_active Expired - Lifetime
- 1990-08-10 DE DE1990604534 patent/DE69004534T2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB382220A (en) * | 1931-04-24 | 1932-10-20 | Henri Joseph Prosper Poitevin | Improvements in or relating to arrangements for balancing articles subjected to constant forces |
GB754832A (en) * | 1953-02-04 | 1956-08-15 | Henri Jacques Marc Lambert | Improvements in or relating to cupboards and the like |
FR2451987A1 (en) * | 1979-03-23 | 1980-10-17 | Horster Volkhard | SET OF CONSTRUCTION FITTINGS FOR FURNITURE INCLUDING DOORS, SHELVES, MOBILE CABINET ELEMENTS, OR THE LIKE |
DE2922780A1 (en) * | 1979-06-05 | 1980-12-11 | Werner Bruno | Cupboard with vertically sliding doors - has doors moving along guide pieces, and has weight balance using cables, roller and spring |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993018263A1 (en) * | 1992-03-11 | 1993-09-16 | Erica Gem Pty. Ltd. | Biasing device |
FR2781004A1 (en) * | 1998-07-08 | 2000-01-14 | Cabines Denizet Sa | Retention device for holding sliding vehicle doors in an open or closed position |
EP0976907A2 (en) * | 1998-07-28 | 2000-02-02 | Arturo Salice S.p.A. | Actuator for a vertically slidable closure element |
US6243988B1 (en) | 1998-07-28 | 2001-06-12 | Arturo Salice S.P.A. | Actuating device for a closing element movable in a vertical direction |
EP0976907A3 (en) * | 1998-07-28 | 2003-08-06 | Arturo Salice S.p.A. | Actuator for a vertically slidable closure element |
WO2001081698A1 (en) * | 2000-04-19 | 2001-11-01 | Ashland Products, Inc. | Balance system for sash window assembly |
US6523307B2 (en) | 2000-04-19 | 2003-02-25 | Ashland Products, Inc. | Balance system for sash window assembly |
US6751904B2 (en) | 2000-04-19 | 2004-06-22 | Ashland Products, Inc. | Balance system for sash window assembly |
US7093349B2 (en) | 2000-04-19 | 2006-08-22 | Newell Operating Company | System for manufacturing sash window assemblies |
FR2886969A1 (en) * | 2005-06-10 | 2006-12-15 | Airbus Sas | Door of baggage compartment used in aircraft cabin, has guide system which extends vertically in different orientation using vertical guide rail and slideway |
US7744035B2 (en) | 2005-06-10 | 2010-06-29 | Airbus | Door for compartment of the baggage-compartment type |
Also Published As
Publication number | Publication date |
---|---|
DE69004534D1 (en) | 1993-12-16 |
IT8921729V0 (en) | 1989-09-15 |
DE69004534T2 (en) | 1994-02-24 |
EP0417822B1 (en) | 1993-11-10 |
ES2045767T3 (en) | 1994-01-16 |
IT216856Z2 (en) | 1991-10-05 |
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