The present invention relates to a perfected support for the wall assembly of a cantilever piece of furniture, such as, for example, cupboards and bases for kitchens and bathrooms, cantilever furniture for bedrooms and living rooms, and the like.
As is well-known to experts in the field, supports commonly used for the wall assembly of cantilever furniture consist of plaques, more or less rectangular, but which can have numerous configurations, said plaques being fixed to the wall by fixing means, for example expansion dowels, chemical dowels, or similar fixing means which are considered as being totally equivalent.
These plaques have sections - generally raised edges or windows with respect to the wall to which they are fixed - to which the hook of the hanging bracket fixed to the piece of furniture is connected.
Supports and hanging brackets of this type are described for example in patent applications
These supports are subjected to severe combined stress in both directions, vertical and horizontal, due to the weight of the contents of the wall cupboard.
This stress is transmitted from the support to the fixing dowels to the wall, and said dowels are consequently subjected to both shear and tensile stress, with the consequent risk of the yielding and falling of the cupboard.
The general objective of the present invention is to solve the above-mentioned technical problem of the known art, by providing a support equipped with means capable of adequately resisting combined shear and tensile stress transmitted from the loaded cupboard to the fixing dowels to the wall.
This objective is achieved by a support having the characteristics specified in the enclosed claim 1 and sub-claims.
The structural and functional characteristics of the invention, and its advantages with respect to the known art, will appear more evident from the following description, referring to the enclosed drawings, which illustrate embodiment examples of the same invention.
In the drawings:
Said support 30 is in the form of a metal plaque 31, having a substantially elongated rectangular form, and having a central section 32, raised or deep-drawn, for example where there is a window 33. A raised or deep-drawn section refers to a section which is suitably spaced from a wall P, or from the plane on which said plaque 31 lies.
A hook G of the hanging bracket R indicated above, is hooked to said window 33.
According to the invention, the support 30 is fixed to a wall P by the combination of fixing means, which comprises a dowel 34, and a pin 35, which are inserted in respective holes 36, 37 situated in the same wall P.
The dowel 34 and pin 35 are respectively positioned in correspondence with the upper and lower opposite ends of the plaque 31.
The dowel 34 is expanded by means of a screw 38 passing through a hole 39 of the plaque 31, whereas the pin 35 extends integrally from the plaque 31 itself.
It is evident how the combined action of the dowel 34 and the pin 35 effectively resists the forces applied to the plaque 31 in vertical and horizontal directions indicated by the arrows F1 and F2 respectively.
In this embodiment, the single dowel 34A is positioned below the upper pin 35A where there is a hole 39A for the passage of the expansion screw 38A.
As can be clearly seen from the figures, a first pin 35B is positioned in correspondence with the upper end of the plaque 31B, whereas a second pin 135B is positioned slightly below the deep-drawing 32B comprising the window 33B.
A first dowel 34B, on the other hand, is positioned below the upper pin 35B, whereas a second dowel, 134B is positioned below the lower pin 135B.
In other words, the dowel 34B is positioned between the pin 35B and the deep-drawing 32B, whereas the dowel 134B is positioned between the pin 135B and the lower free end of the plaque 31B.
Said plaque 31C is fixed to the wall by the combination of four dowels 34C with expansion screws 38C, and two pins 35C.
As can be clearly seen in the figures, the four dowels 34C are positioned in correspondence with the corners of the plaque 31C, whereas the pins 35C are positioned laterally (in correspondence with the vertical sides of the plaque 31C) in an intermediate position between the dowels 34C positioned at the corners. The plaque 31C also has raised windows 33C for the connection of the hook G of the hanging bracket device R.
As can be clearly seen in the figures, the plaque 31D is fixed to the wall by the combination of two pins 35D and two dowels 34D with expansion screws 38D.
According to this embodiment of the invention, the pins 35D and the dowels 34D are arranged in diagonally opposite positions, in correspondence with the corners of the plaque 31D itself.
Close to the dowel 34E, there is a section 32E, deep-drawn or raised, with a window 33E for the connection of the hook G of the hanging bracket device R of the cupboard M.
As can be clearly seen from the figures, the pin 35E is positioned in correspondence with the bottom vertex of the triangle, the dowels 34E, 134E are positioned in correspondence with the upper vertexes of the triangle, whereas the dowel 234E is positioned below the deep-drawn section 32E, close to the vertical side of the triangle.
It is evident how, in all seven embodiments of the invention described above, with reference to the figures, the combined action of the dowels and pins is able to ensure considerable resistance to the shear and tensile stress transmitted by the loaded cupboard to the same dowels and pins.
The objective mentioned in the preamble of the description has therefore been achieved.
The protection scope of the present invention is defined by the enclosed claims.
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.