Perfected motion device to open and close a wardrobe door

Abstract: A rigid bearing staff (4a), substantially C shaped, the central element (4a) of which is hinged along the axis (KK') passing within the thickness of a wall (3a,b,c) of a wardrobe, fitted with two arms (4b,4c) the free ends of which are rotatingly linked to two opposite pins (8) anchored to end of the medial axis (ZZ'), or quasi medial axis, lying in the internal part of a door (1) to be governed, while two other arms (9,10), next to an appropriate distance from and to one side only common to the previous ones to which they are parallel and of equal length, have their four ends rotatingly linked to other two axes (R',T') again parallel to the previous ones and located one in the rigid structure of the wardrobe and the other along the inside of the same door (1): all this constitutes the functional design of two articulated parallelogram hinges, superimposed and distanced, rigidly and directly linked and invisible inside and on all external sides of a wardrobe.

Description: The present invention concerns a wardrobe side wall and perfected motion device system for opening and closing at least one wardrobe door. As it is known, so called "flush" doors, concerned with this invention, have the advantage with respect to sliding doors of a better dust-sealing because their perimeter plane adheres and fits into the borders of the fixed structures of a wardrobe. However they feature the drawback of having a width limited by their open dimensions and that they exclusively bear upon their hinges at an overhang. Also in order to overcome these limits "parallelogram" opening systems have been proposed, substantially consisting of two large articulated quadrilaterals preferably located one under the lower wall of a wardrobe and the other above the top wall thereof, thus obtaining both a seal closure and a very limited opening. In particular, document EP A 0 335 436, disclosing the features of the preamble of claim 1, is known that shows a system for moving doors comprising upper and lower arms each having an end fixed to the door and the other end fixed to a wardrobe inner wall, the upper and lower arms being independent one from the other. However, these systems feature the drawback of being subjected to oscillating shaking of the door during motion, because, in general, the two superimposed quadrilaterals are not rigidly connected to one another. But, in order to perform this connection in a direct manner, the only solution known from the prior art is to pass a vertical transmission shaft within the wardrobe inner space which seriously jeopardizes its functions. The main purpose of the present invention is to realize a rigid and direct connection between said two superimposed quadrilaterals, solidly connecting at least two specular pins by means of a transmission shaft that however does not pass through the inner space of the wardrobe, but on the contrary the connection lies rotatingly supported within the thickness of a wall of the wardrobe and hence is not visible from a user even if the door is open. Another important purpose of the invention concerns the type of construction that, being carried out in a factory, does not require difficult operation during the assembly stage on location. The invention is described in detail herebelow by an example and the support of drawings in which Figure 1 is a first perspective view of a two door wardrobe; Figure 2 is a second perspective view of the same wardrobe as in Fig. 1 in which the right hand door is shown open and superimposed on the closed one; Figure 3 is a blow-up part view of component elements of the upper part of the cinematic elements, the lower part being the same and specular to the upper one; Figure 4 is a part side view. Fig. 3 and 4 show the parts relative to the assembled inner side wall 3; this inner side wall contains and rotatingly supports the vertical part 4a of a C shaped staff 4, the arms 4b, 4c of which appear to be bent in order to allow the door full opening (ref. to Fig. 1). Fig. 4 shows the assembled inner side wall 3 that comprises the following elements (visible in the other figures too): back half-side wall 3a; front half-side wall 3b; hollow side wall 3c connecting the two half-side walls, preferably wiredrawn; two opposite support caps 3d, fitted onto the ends of the hollow side wall 3c, and embedded and bolted (by means of screws 5) to the half-side walls 3a, 3b. Both support caps 3d comprise the flaps 3f and the seats S that are the rotating connection to C shaped staff 4. C shaped staff 4, as shown in Fig. 3, consists of three parts solidly connected by means of thrust-screws 4d. The vertical part 4a is rotatingly connected to seats S of support caps 3d, while the free ends of arms 4b , 4c are fitted with seats 7, suited to being rotatingly connected to support pins 8 bolted to the door with screws 8a. Door 1 is thus hinged both on own z-z' axis close and parallel to its inner center line and along the k-k' axis that lies within the hollow side wall 3c. In Figures 1, 2, 3 other two arms 9 and 10 are shown set next respectively to the upper and lower wall (11a,11b), parallel and on the same plane, respectively, with arms 4b and 4c of which they feature the same operational length L. These arms 9 and 10 have their ends rotatingly connected to support pins 13 that are solid with door 1 and with support pins 11 fixed to the two end plates 11a and 11b. Note that arms 9 and 10 have no bearing function because the weight of the door is supported only by the arms 4b, 4c of C shaped staff 4. However they functionally complete, together with arms 4b , 4c, a system of two superimposed parallelograms rigidly connected in their common rotation axis k-k' hence the system is suited to ensuring the motion of the door in absolute absence of lateral shaking and clearly harmonic with the aesthetics of the unit, given that the shaft 4a is not visible. Fig. 1 shows that the hollow cross section of part (3c) is set up to support an additional C shaped staff (40) for governing a second door 2 (shown in Fig. 2) provided on the left side of the wardrobe. The description of the functional structure the motion device system makes the latter defined and provides evidence of the invention achieving its purposes.

Claims: A wardrobe side wall (3) and a perfected motion device for opening and closing the wardrobe doors in which the motion device, as a functional design of two superimposed and distanced articulated parallelogram hinges (4b,4c,9,10) being invisible inside and on all external vertical side walls of the wardrobe, comprises two bearing arms (4b,4c) the first ends of which being fixed to the wardrobe side wall (3) and defining a first pivot axis (K,K'), the free ends of the two bearing arms (4b,4c) being rotatibly linked to two support pins (8) in use respectively anchored to the internal face of the door (1) to be governed and opposite to each other near the upper and lower ends of the door (1) along the medial or quasi medial axis (Z,Z') of the door (1), while two other arms (9,10) of the motion device are provided, each lying appropriately distanced from and in the same horizontal plane with a corresponding one of the bearing arms (4b,4c) whereby the lines through the pivoting ends of the bearing arms (4b,4c) are parallel to the two other arms (9,10) and whereby the shortest distance between the two pivoting ends of each bearing arm (4b,4c) equals the lenght (L) of each of said other arms (9,10), each pivoting end of one of the said two other arms (9,10) defining with a corresponding end of the other one of said two other arms (9,10) a respective pivot axis (T,T'; R,R') being parallel to the said first pivot axis (K,K') and the said medial axis (Z,Z'), a first one (T,T') of said respective other pivot axis (T,T'; R,R') being located in the rigid structure of the wardrobe and the second one (R,R') along the inside of the same door (1), the wardrobe side wall and the motion device being characterized in that the said rigid bearing arms (4b,4c) are rigidly and directly linked to a central element (4a), to define a substantially C-shaped rigid bearing staff (4), and the central element (4a) being hinged along the said first pivot axis (K,K'), the latter passing within the thickness of a hollow element (3c) of the side wall (3) of the wardrobe. A wardrobe side wall (3) and a perfected motion device according to claim 1 characterized in that the side wall (3) in which the C-shaped rigid bearing staff (4) is encased is formed by more elements (3a,3b,3c) assembled one with another. A wardrobe side wall (3) and a perfected motion device according to claim 2, characterized in that the hollow side wall (3c) in which part (4a) of the C-shaped rigid bearing staff (4) passes has a hollow cross-section. A wardrobe side wall (3) and a perfected motion device according to claim 3, characterized in that the hollow cross section of said hollow side wall (3c) is set up to bear more C-shaped staffs (40), each for governing one door (1,2). A wardrobe side wall (3) and a perfected motion device according to claim 3 characterized in that the hollow side wall (3c) comprising the hollow cross section is a tubular element (3c) embedded into the side wall (3). A wardrobe side wall (3) and a perfected motion device according to claim 5 characterized in that the tubular element (3c) is set up to fit its two ends into two supports caps (3d) rotatingly bearing the C-shaped staff (4), the support caps being set so that all the parts making up the side wall (3) are solidly connected. A wardrobe side wall (3) and a perfected motion device according to claim 1 characterized in that the C-shaped staff (4) is dismountable in its parts (4a,4b,4c) and has at least one arm (4b,4c) radially orientated on the door inner center line (z-z') and fastened to the door by means of a screw (8a).

Inventors: PRATOLONGO MODESTO, PRATOLONGO, MODESTO
Applicants: PRATOLONGO MODESTO, PRATOLONGO, MODESTO
Application year: 1996
Main classification: E05D15
IPC codes: E05D15