EP1807580A1 - Plasterboard panel for access to a compartment and method for making a plasterboard panel for access to a compartment - Google Patents

Plasterboard panel for access to a compartment and method for making a plasterboard panel for access to a compartment

Info

Publication number
EP1807580A1
EP1807580A1 EP05793034A EP05793034A EP1807580A1 EP 1807580 A1 EP1807580 A1 EP 1807580A1 EP 05793034 A EP05793034 A EP 05793034A EP 05793034 A EP05793034 A EP 05793034A EP 1807580 A1 EP1807580 A1 EP 1807580A1
Authority
EP
European Patent Office
Prior art keywords
sheet
door
opening
panel
flat surface
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
Application number
EP05793034A
Other languages
German (de)
French (fr)
Other versions
EP1807580B1 (en
Inventor
Roberto Celli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Celli Roberto
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PL05793034T priority Critical patent/PL1807580T3/en
Publication of EP1807580A1 publication Critical patent/EP1807580A1/en
Application granted granted Critical
Publication of EP1807580B1 publication Critical patent/EP1807580B1/en
Priority to CY20101101054T priority patent/CY1111055T1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F19/00—Other details of constructional parts for finishing work on buildings
    • E04F19/08—Built-in cupboards; Masks of niches; Covers of holes enabling access to installations
    • E04F19/086—Covers with magnetic fixing means

Definitions

  • the present invention relates to a plasterboard panel for access to a compartment and a method for making a plasterboard panel for access to a compartment.
  • the present invention is intended for a plasterboard panel for access to a compartment of the type comprising a first plasterboard sheet having a first flat surface and a second flat surface opposite the first.
  • This first plasterboard sheet having an opening extending between the first and the second flat surfaces, comprises a first outer zone, delimiting the opening, which extends at least partly in the same plane as the first flat surface.
  • the plasterboard panel also comprises a second plasterboard sheet having a first flat surface and a second flat surface opposite the first, forming a door which can be connected to the opening in the first sheet.
  • the second plasterboard sheet comprises a second outer zone delimiting the door.
  • the plasterboard panel is equipped with holding means for stably connecting the door to the opening, for a door closed configuration, and for at least partly removing the door from the opening, for a door open configuration.
  • plasterboard panels are normally used to allow access to a compartment by removing or moving the door formed by the second sheet.
  • the compartment which may for example be a cavity between two walls
  • any device such as an electrical panel, a local vent, and other devices, which requires periodic or impromptu adjustments, repairs or other operations.
  • the access panels in the prior art briefly described open outwards, that is to say, on the side opposite the compartment, making use of the above-mentioned holding means.
  • the prior art includes a plurality of different holding means, to allow door outward opening.
  • access panels are known in which the door and the first sheet are joined together by hinges located on external portions of the panel, that is to say, on portions of the panel which, when panel installation is complete, are not facing the compartment.
  • the prior art panels for access to a' compartment allow surface finishing machining which integrates very well with the walls forming the compartment and on which the access panel is installed.
  • access panels which have stop elements for the door.
  • the stop elements are located on an internal portion of the first sheet, that is to say on the surface of the first sheet directly facing the compartment, so that, when it is in the closed position, the door rests against the stop elements, remaining in a predetermined position.
  • the prior art includes a plurality of solutions for joining the edges of the door and the edges of the opening in the first sheet. From a structural viewpoint, said plurality of solutions may be traced back to a single general solution.
  • said general solution involves the closing doors having edges perpendicular to the plane formed by the sheet which forms the door itself. These edges correspond to opening edges perpendicular to the first sheet, that is to say, to the sheet in which the opening is made.
  • profiles and counter-profiles both internal or external, applied to the edges of the opening and/or to the edges of the panel to avoid creating gaps between the door and the opening edge. The shape and position of such profiles and counter-profiles forms the above-mentioned plurality of solutions.
  • methods for making plasterboard panels for access to a compartment comprising the steps of making an opening in a first plasterboard sheet and preparing a second plasterboard sheet to form a door for the opening in the first sheet.
  • connection between the edges of the opening and the edges of the door is made by preparing edges perpendicular to the plane in which the panel lies both on the door and in the opening.
  • the first plasterboard sheet is customarily cut in directions perpendicular to the sheet, to form the edges of the opening as described above.
  • the edges of the door are made by cutting the second sheet in directions perpendicular to the plane in which the sheet lies, so that the edges of the opening fit together with the edges of the door.
  • the Applicant has found that several aspects of prior art plasterboard panels for access to a compartment and the methods for making a plasterboard panel for access to a compartment can be improved on.
  • the prior art plasterboard panels for access to a compartment are subject to damage in the portion with the edges of the door and the edges of the sheet on which the access opening is made, compromising panel functionality.
  • the main technical need of the present invention is to propose a plasterboard panel for access to a compartment and a method for making a plasterboard panel for access to a compartment which are free of the above-mentioned disadvantages .
  • the aim of the present invention is to provide a plasterboard panel for access to a compartment without gaps between the door and the opening.
  • Another aim of the present invention is to propose a plasterboard panel for access to a compartment which, even after prolonged used, maintains its functionality unchanged.
  • Yet another aim of the present invention is to provide a simple, precise and rapidly implemented method for making a plasterboard panel for access to a compartment.
  • FIG. 1 is a perspective view of a plasterboard panel for access to a compartment according to the present invention in a first operating configuration
  • FIG. 2 is a perspective view of the panel illustrated in Figure 1 in a second operating configuration
  • FIG. 3 is a cross-section according to the plane III - III of the panel illustrated Figure 1;
  • Figure 4 is a perspective view of an alternative embodiment of the panel illustrated in Figure 1; - Figures 5 to 7 are schematic views of several steps in a method for making a plasterboard panel for access to a compartment according to the present invention;
  • FIGS. 8 to 10 are schematic views of further steps of the method illustrated in Figures 5 to 7;
  • FIG 11 is a schematic perspective view of a plasterboard panel for access to a compartment, seen from the inside of the compartment and illustrating an alternative embodiment of the means for holding a door in the closed configuration;
  • Figure 12 is a cross-section of the plasterboard panel illustrated in Figure 11 according to the plane IV - IV in Figure 11, but in which the door is shown in the open configuration.
  • the numeral 1 denotes a plasterboard panel for access to a compartment.
  • the plasterboard panel 1 comprises a first plasterboard, sheet 2 having a first flat surface 3 and a second flat surface 4 opposite the first 3.
  • the first plasterboard sheet 2 having an opening 5 extending between the first and the second flat surfaces 3, 4, comprises an outer zone 6 which delimits the opening 5 and which extends at least partly in the same plane as the first flat surface 3.
  • the panel 1 also comprises a second plasterboard sheet 7 having a first flat surface 8 and a second flat surface 9 opposite the first 8, forming a door 10 which can be connected to the opening 5 in the first sheet 2.
  • the second plasterboard sheet 7 comprises a second outer zone 11 delimiting the door 10.
  • the panel 1 comprises holding means 12 for stably connecting the door 10 to the opening 5, for a door 10 closed configuration (for example, illustrated in Figure 1) .
  • the holding means 12 also have the function of allowing the door 10 to be at least partly removed from the opening 5, for a door 10 open configuration (for example, illustrated in Figure 2) .
  • the door 10 To pass from the door closed configuration to the door 10 open configuration, the door 10 must be turned or removed relative to the opening 5 from the opposite side to the compartment, that is to say, towards the outside of the compartment.
  • the outer zone 6 is flared transversally to the plane in which the panel 1 lies and narrows from the first flat surface 3 of the first sheet 2 to the second flat surface 4 of the first sheet 2.
  • the second outer zone 11 is flared transversally to the plane in which the panel 1 lies and narrows from the first flat surface 8 to the second flat surface 9 of the second sheet 7.
  • the first outer zone 6 comprises first outer edges 13 facing the opening 5, whose inclination relative to the plane in which the panel 1 lies forms the flaring of the first outer zone 6.
  • the second outer zone 11 comprises second outer edges 14 extending around the outside of the door 10 and whose inclination relative to the plane in which the panel 1 lies forms the flaring of the second outer zone 11.
  • a portion of the first flat surface 3 of the first sheet 2 extends without interruption forming at least the first outer edges 13.
  • a portion of the first flat surface 8 of the second sheet 7 extends without interruption forming at least the second outer edges 14.
  • the first and second flat surfaces 3, 4 of the first sheet 2, like the first and second flat surfaces 8, 9 of the second sheet 7, are made of board layers 30, 80. Between two respective board layers there is a sheet of gypsum plaster, so that the assembly of board layers and gypsum plaster sheet forms the typical plasterboard structure.
  • the first outer zone 6 comprises an extension of the first plasterboard sheet 2 projecting into the opening 5, which can be suitably folded on the second flat surface
  • the second outer zone 11 comprises an extension of the second plasterboard sheet 7 located on the opposite side to the first flat surface 8 of the second sheet 7.
  • Said extension can be suitably folded on the second flat surface 9 of the second sheet 7, in particular in contact with the latter, as illustrated in Figure 3.
  • the presence of the extension of the second sheet 7 forms a second frame in the second outer zone 11 (particularly if the extension is folded in contact on the second flat surface 9 of the second sheet 7) .
  • the flaring of the first outer zone 6 is formed by a first portion inclined at a constant angle A between the first flat surface 3 of the first sheet 2 and the first outer edge 13.
  • the flaring of the second outer zone 11 is formed by a second portion inclined at a constant angle B between the first flat surface 8 of the second sheet 7 (and, therefore, of the door 10) and the second outer edge 14.
  • the first angle A has an amplitude of between 30° and 80°, preferably 60°.
  • the dimensions of the door 10 are such that they allow perfect insertion and perfect closing of the opening 5.
  • the panel 1 comprises holding means 12.
  • the holding means 12 comprise anchoring means 15 active between the door 10 and the first outer zone 6.
  • Said anchoring means 15, which in the preferred embodiment are magnetic, are designed to anchor the door 10 to the first sheet 2 when the door 10 is in the closed configuration.
  • the anchoring means 15 comprise at least one magnet 16, preferably two, stably housed in the second outer zone 11 and facing the opening 5. With the door 10 closed, the magnet 16 acts on ferromagnetic strikers 17 fixed to the first outer zone 6 and at least partly projecting into the opening 5.
  • the holding means 12 also comprise at least one hinge 18, preferably of the recessed type, acting between the first edges 13 of the opening 5 and the second edges 14 of the door 10.
  • one or more hinges 18 are fixed to the first sheet 2 (preferably on an upper side of the opening
  • Telescopic cylinders 181 (for example, containing fluid, in particular gas) have a first end 182 hinged to the door 10 (advantageously on the extension of the second outer zone 11 if present, when the latter is folded on and makes contact with the second flat surface 9 of the second sheet 7) and a second end 183 hinged to the first sheet 2 (at the first outer edge 13 and advantageously on the extension of the first outer edge 6 if present, when the latter is folded on and makes contact with the second flat surface 4 of the first sheet 2) .
  • the axes of rotation of the first and second ends 182, 183 of the telescopic cylinders 181 are parallel with the axis of rotation formed by the hinges 18.
  • This structure can also allow the door 10 to open by tilting upwards and this open configuration to be stably maintained without effort by the user thanks to the resistance offered by the telescopic cylinders 181 when they are of the fluid type (in particular, containing gas) .
  • the arrows in Figure 12 illustrate the movements of the various parts in the door 10 as it passes between the closed and the open configurations.
  • the door 10 comprises a plurality of slits 19 extending between the board layers covering the door 10, that is to say between the first and the second flat surfaces 8, 9 of the second sheet 7.
  • the second plasterboard sheet 107 forming the door to be inserted in the opening, is also made with a second rough edge 1070 (forming a rough edge of the door) , whose inclination relative to the plane in which the second sheet 107 lies is not important and may also be substantially a right angle to said plane .
  • the first wedge-shaped groove 120 extends at least over the part of the thickness of the first sheet 102 comprising the second board layer 102c and the gypsum plaster sheet 102b of the first sheet 102.
  • the second wedge-shaped groove 121 extends at least over the part of the thickness of the second sheet 107 comprising the second board layer 107c and the gypsum plaster sheet 107b of the second sheet 107.
  • the method for making the plasterboard panel for access to a compartment also comprises the step of folding a first portion 103 of the first sheet 102 extending between the first groove 120 and the first rough edge 1020 of the opening until the first opening angle C is closed and a first flared frame 106 is formed, its edges forming the finished edges 113 of the opening.
  • the first portion 103 of the first sheet 102 must be folded in such a way that the opposite walls of the first groove 120 coincide.
  • the method comprises the step of folding a first portion 108 of the second sheet 107 extending between the second groove 121 and the second rough edge 1070 of the door until the second opening angle D is closed and a second flared frame 111 is formed, its edges forming the finished edges 114 of the door.
  • the value of the taper angle E of the second frame 111 is equal to the difference between the second opening angle D and 90°.
  • a second portion 109 of the second sheet 107 extending from the fourth groove 123 to the edge of the door, is folded to close the fourth opening angle G.
  • the fourth opening angle G formed by the fourth wedge-shaped groove 123
  • the second portion 109 of the second sheet 107 is folded parallel with the extension of the door and away from the finished edges 114 of the door.
  • the third wedge-shaped groove 122 is immediately adjacent to the first groove 120, as shown in Figure 5.
  • the fourth wedge-shaped groove 123 is immediately adjacent to the second groove 121, as shown in Figure 8.
  • the second portion 104 of the first sheet 102 once folded, makes contact with the second board layer 102c of the first sheet 102 without leaving air spaces
  • the second portion 109 of the second sheet 107 once folded, makes contact with the second board layer 107c of the second sheet 107 without leaving air spaces.
  • the third and fourth grooves 122, 123 respectively extend at least over the part of the thickness comprising the respective second board layer 102c, 107c and the respective gypsum plaster sheet 102b, 107b.
  • the third and fourth wedge-shaped grooves 122, 123 do not affect the respective first board layer 102a, 107a. This guarantees the continuity of the first board layer 102a of the first sheet 102 on the entire first tapered frame 106, and of the first board layer 107a of the second sheet 107 on the entire second tapered frame 111.
  • the second portions 104, 109 of the panel, respectively extending from the third groove 122 to the first rough edge 1020 of the opening, and from the fourth groove 123 to the second rough edge 1070 of the door, once folded, are preferably glued against the respective part of the panel they make contact with.
  • the present invention achieves the preset aims.
  • the first and second tapered frames create a connection between the door and the opening in the first plasterboard sheet which is free of gaps.
  • the tapering of the frames allows progressive engagement between the door and the opening.
  • the method proposed allows a plasterboard panel for access to a compartment to be made in a simple, precise and rapid way, since it is enough to carry out milling with precisely defined and constant opening angles .

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Panels For Use In Building Construction (AREA)
  • Finishing Walls (AREA)
  • Building Environments (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Assembled Shelves (AREA)

Abstract

In a plasterboard panel (1) a first plasterboard sheet (2) has an opening (5) delimited by a first outer zone (6) of the first sheet (2); a second plasterboard sheet (7) forms a door (10) which can be connected to the opening (5) in the first sheet (2), the second plasterboard sheet (7) comprising a second outer zone (11) delimiting the door (10). The panel (1) also comprises holding means (12) for stably connecting the door (10) to the opening (5). The first outer zone (6) is tapered transversally to the plane in which the panel (1) lies and narrows from a first flat surface (3) of the first sheet (2) to a second flat surface (4) of the first sheet (2) opposite the first flat surface. The second outer zone (11) is tapered transversally to the plane in which the panel (1) lies and narrows from a first flat surface (8) of the second sheet (7) to a second flat surface (9) of the second sheet (7) opposite the first flat surface. A method for making a plasterboard panel comprises the steps of milling a first sheet (102) to obtain a first wedge-shaped groove (120) with a first opening angle (C); milling a second sheet (107) to obtain a second wedge-shaped groove (121) with a second opening angle (D); the first and second opening angles (C, D) being supplementary angles.

Description

Description
Plasterboard panel for access to a compartment and method for making a plasterboard panel for access to a compartment
Technical Field
The present invention relates to a plasterboard panel for access to a compartment and a method for making a plasterboard panel for access to a compartment. In particular, according to a first aspect, the present invention is intended for a plasterboard panel for access to a compartment of the type comprising a first plasterboard sheet having a first flat surface and a second flat surface opposite the first. This first plasterboard sheet, having an opening extending between the first and the second flat surfaces, comprises a first outer zone, delimiting the opening, which extends at least partly in the same plane as the first flat surface. The plasterboard panel also comprises a second plasterboard sheet having a first flat surface and a second flat surface opposite the first, forming a door which can be connected to the opening in the first sheet. The second plasterboard sheet comprises a second outer zone delimiting the door. Moreover, the plasterboard panel is equipped with holding means for stably connecting the door to the opening, for a door closed configuration, and for at least partly removing the door from the opening, for a door open configuration.
Background Art
These types of plasterboard panels are normally used to allow access to a compartment by removing or moving the door formed by the second sheet.
In this way, inside the compartment, which may for example be a cavity between two walls, there may be any device, such as an electrical panel, a local vent, and other devices, which requires periodic or impromptu adjustments, repairs or other operations. Moreover, the access panels in the prior art briefly described open outwards, that is to say, on the side opposite the compartment, making use of the above-mentioned holding means.
If the door in the access panels were to open into the compartment, the space needed for door movement could not be used by the device contained in the compartment.
The prior art includes a plurality of different holding means, to allow door outward opening.
In particular, access panels are known in which the door and the first sheet are joined together by hinges located on external portions of the panel, that is to say, on portions of the panel which, when panel installation is complete, are not facing the compartment.
Because they are made of plasterboard, the prior art panels for access to a' compartment allow surface finishing machining which integrates very well with the walls forming the compartment and on which the access panel is installed.
It is quite desirable that, when the door is in the closed position, the door lies in the same plane as the sheet having the access opening, without unevenness in the plane formed by the wall on which the access panel is installed.
For this purpose, access panels are known which have stop elements for the door. The stop elements are located on an internal portion of the first sheet, that is to say on the surface of the first sheet directly facing the compartment, so that, when it is in the closed position, the door rests against the stop elements, remaining in a predetermined position.
The prior art includes a plurality of solutions for joining the edges of the door and the edges of the opening in the first sheet. From a structural viewpoint, said plurality of solutions may be traced back to a single general solution.
In particular, said general solution involves the closing doors having edges perpendicular to the plane formed by the sheet which forms the door itself. These edges correspond to opening edges perpendicular to the first sheet, that is to say, to the sheet in which the opening is made. Also known is the use of profiles and counter-profiles, both internal or external, applied to the edges of the opening and/or to the edges of the panel to avoid creating gaps between the door and the opening edge. The shape and position of such profiles and counter-profiles forms the above-mentioned plurality of solutions.
With reference to a second aspect of the present invention, methods for making plasterboard panels for access to a compartment are known comprising the steps of making an opening in a first plasterboard sheet and preparing a second plasterboard sheet to form a door for the opening in the first sheet.
In these methods, the connection between the edges of the opening and the edges of the door is made by preparing edges perpendicular to the plane in which the panel lies both on the door and in the opening. In particular, the first plasterboard sheet is customarily cut in directions perpendicular to the sheet, to form the edges of the opening as described above. Similarly, the edges of the door are made by cutting the second sheet in directions perpendicular to the plane in which the sheet lies, so that the edges of the opening fit together with the edges of the door.
The Applicant has found that several aspects of prior art plasterboard panels for access to a compartment and the methods for making a plasterboard panel for access to a compartment can be improved on. The prior art plasterboard panels for access to a compartment are subject to damage in the portion with the edges of the door and the edges of the sheet on which the access opening is made, compromising panel functionality.
This disadvantage is due to the fact that the right angle edges of the door and of the opening tend to collide every time the door is closed, particularly after prolonged use of the access panel.
Due to the low tolerances between the door and the opening, needed to prevent the formation of gaps, a small error in the movement for reinserting the door in the opening is enough to cause interference between the edges of the door and of the opening as the door is closed. This movement error becomes inevitable after prolonged use of the door. For example, when the door is hinged to the edges of the opening, since the door is made of plasterboard subjected to a high weight force resting on the hinges forming the axis of rotation, over time a slight misalignment of the axis of rotation between the door and the opening becomes inevitable.
Moreover, in the prior art access panels it is practically impossible to reduce the presence of gaps between the door and the opening to zero without using stop profiles and counter-profiles, since, given the finished thickness of the door and of the sheet on which the opening is made, any relative movement of the door and the opening requires a tolerance between the door dimensions and the opening dimensions in order to operate, for example to be able to guarantee door rotation relative to the opening.
This requirement means that the prior art plasterboard panels for access to a compartment are very complex to make.
Disclosure of the Invention In this context, the main technical need of the present invention is to propose a plasterboard panel for access to a compartment and a method for making a plasterboard panel for access to a compartment which are free of the above-mentioned disadvantages . In particular, the aim of the present invention is to provide a plasterboard panel for access to a compartment without gaps between the door and the opening.
Another aim of the present invention is to propose a plasterboard panel for access to a compartment which, even after prolonged used, maintains its functionality unchanged.
Yet another aim of the present invention is to provide a simple, precise and rapidly implemented method for making a plasterboard panel for access to a compartment.
The technical need indicated and the aims specified are substantially achieved by a plasterboard panel for access to a compartment and by a method for making a plasterboard panel for access to a compartment comprising the technical features described in one or more of the claims herein.
Brief Description of the Drawings Further features and advantages of the present invention are more apparent in the detailed description below, with reference to a preferred, non-restricting, embodiment of a plasterboard panel for access to a compartment and a method for making a plasterboard panel for access to a compartment, illustrated in the accompanying drawings, in which:
- Figure 1 is a perspective view of a plasterboard panel for access to a compartment according to the present invention in a first operating configuration;
- Figure 2 is a perspective view of the panel illustrated in Figure 1 in a second operating configuration;
- Figure 3 is a cross-section according to the plane III - III of the panel illustrated Figure 1;
Figure 4 is a perspective view of an alternative embodiment of the panel illustrated in Figure 1; - Figures 5 to 7 are schematic views of several steps in a method for making a plasterboard panel for access to a compartment according to the present invention;
- Figures 8 to 10 are schematic views of further steps of the method illustrated in Figures 5 to 7; - Figure 11 is a schematic perspective view of a plasterboard panel for access to a compartment, seen from the inside of the compartment and illustrating an alternative embodiment of the means for holding a door in the closed configuration; Figure 12 is a cross-section of the plasterboard panel illustrated in Figure 11 according to the plane IV - IV in Figure 11, but in which the door is shown in the open configuration.
Detailed Description of the Preferred Embodiments of the Invention With reference to Figures 1 and 2, the numeral 1 denotes a plasterboard panel for access to a compartment. With reference also to Figure 3, the plasterboard panel 1 comprises a first plasterboard, sheet 2 having a first flat surface 3 and a second flat surface 4 opposite the first 3. The first plasterboard sheet 2, having an opening 5 extending between the first and the second flat surfaces 3, 4, comprises an outer zone 6 which delimits the opening 5 and which extends at least partly in the same plane as the first flat surface 3. The panel 1 also comprises a second plasterboard sheet 7 having a first flat surface 8 and a second flat surface 9 opposite the first 8, forming a door 10 which can be connected to the opening 5 in the first sheet 2. The second plasterboard sheet 7 comprises a second outer zone 11 delimiting the door 10.
The panel 1 comprises holding means 12 for stably connecting the door 10 to the opening 5, for a door 10 closed configuration (for example, illustrated in Figure 1) . The holding means 12 also have the function of allowing the door 10 to be at least partly removed from the opening 5, for a door 10 open configuration (for example, illustrated in Figure 2) .
When the door 10 is in the closed configuration, as illustrated in Figure 1, the first flat surface 3 of the first sheet 2 and the first flat surface 8 of the second plasterboard sheet 7 lie in the same plane.
To pass from the door closed configuration to the door 10 open configuration, the door 10 must be turned or removed relative to the opening 5 from the opposite side to the compartment, that is to say, towards the outside of the compartment.
As illustrated in Figure 3, the outer zone 6 is flared transversally to the plane in which the panel 1 lies and narrows from the first flat surface 3 of the first sheet 2 to the second flat surface 4 of the first sheet 2. At the same time, the second outer zone 11 is flared transversally to the plane in which the panel 1 lies and narrows from the first flat surface 8 to the second flat surface 9 of the second sheet 7.
In particular, the first outer zone 6 comprises first outer edges 13 facing the opening 5, whose inclination relative to the plane in which the panel 1 lies forms the flaring of the first outer zone 6. Similarly, the second outer zone 11 comprises second outer edges 14 extending around the outside of the door 10 and whose inclination relative to the plane in which the panel 1 lies forms the flaring of the second outer zone 11. Advantageously, a portion of the first flat surface 3 of the first sheet 2 extends without interruption forming at least the first outer edges 13. Similarly, a portion of the first flat surface 8 of the second sheet 7 extends without interruption forming at least the second outer edges 14. In more detail, the first and second flat surfaces 3, 4 of the first sheet 2, like the first and second flat surfaces 8, 9 of the second sheet 7, are made of board layers 30, 80. Between two respective board layers there is a sheet of gypsum plaster, so that the assembly of board layers and gypsum plaster sheet forms the typical plasterboard structure.
Advantageously, the first outer edges 13 of the opening 5 and the second outer edges 14 of the door 10 are covered with board layers 30, 80, preventing the opening 5 or the door 10 from having gypsum plaster parts in direct contact. Moreover, advantageously, if the board layers 30, 80 extend without interruption respectively from the first flat surface 3 of the first sheet 2 to the first outer edges 13 and from the first flat surface 8 of the second sheet 7 to the second outer edges 14, this provides simply an extension without interruption of the first surface 3 of the first sheet 2 and of the first surface 8 of the second sheet 7 respectively to the first and second outer edges 13, 14.
As illustrated in Figure 3, the first outer zone 6 comprises an extension of the first plasterboard sheet 2 projecting into the opening 5, which can be suitably folded on the second flat surface
4 of the first sheet 2, in particular in contact with the later, as illustrated in Figure 3. The presence of the extension of the first sheet 2 forms a first frame in the first outer zone 6 (especially if the extension is folded in contact on the second flat surface 4 of the first sheet 2) .
Similarly, the second outer zone 11 comprises an extension of the second plasterboard sheet 7 located on the opposite side to the first flat surface 8 of the second sheet 7. Said extension can be suitably folded on the second flat surface 9 of the second sheet 7, in particular in contact with the latter, as illustrated in Figure 3. The presence of the extension of the second sheet 7 forms a second frame in the second outer zone 11 (particularly if the extension is folded in contact on the second flat surface 9 of the second sheet 7) .
The flaring of the first outer zone 6 is formed by a first portion inclined at a constant angle A between the first flat surface 3 of the first sheet 2 and the first outer edge 13.
The flaring of the second outer zone 11 is formed by a second portion inclined at a constant angle B between the first flat surface 8 of the second sheet 7 (and, therefore, of the door 10) and the second outer edge 14.
The flaring of the first and second outer zones 6, 11 is such that they are shaped to match one another, allowing perfect door 10 closing on the opening 5. In particular, the first and second angles A, B are supplementary to one another, that is to say, the sum of the absolute value of the first angle A and the absolute value of the second angle B is 180°.
In the preferred embodiment, the first angle A has an amplitude of between 30° and 80°, preferably 60°.
Obviously, the dimensions of the door 10 are such that they allow perfect insertion and perfect closing of the opening 5.
To guarantee stable operating connection of the door 10 to the opening 5 and, at the same time, the possibility of the door
10 passing between the open configuration and the closed configuration, as indicated, the panel 1 comprises holding means 12.
In detail, the holding means 12 comprise anchoring means 15 active between the door 10 and the first outer zone 6. Said anchoring means 15, which in the preferred embodiment are magnetic, are designed to anchor the door 10 to the first sheet 2 when the door 10 is in the closed configuration. In the preferred embodiment, the anchoring means 15 comprise at least one magnet 16, preferably two, stably housed in the second outer zone 11 and facing the opening 5. With the door 10 closed, the magnet 16 acts on ferromagnetic strikers 17 fixed to the first outer zone 6 and at least partly projecting into the opening 5. As is schematically illustrated in Figure 2, the holding means 12 also comprise at least one hinge 18, preferably of the recessed type, acting between the first edges 13 of the opening 5 and the second edges 14 of the door 10. The hinge 18 is designed to guide the door 10 between the open and closed configurations . The panel 1 also comprises at least one lock 20, acting between the door 10 and the first sheet 2 when the door 10 is in the closed configuration. Advantageously, the lock 20 may be a button lock or a key lock. Advantageously, a key lock prevents unauthorised users from accessing the compartment. It should be noticed that, depending on requirements, the holding means 12 may comprise both the hinge 18 and the anchoring means 15, or just the anchoring means 15, or just the hinge 18.
In one embodiment of the invention, in particular illustrated in Figures 11 and 12, one or more hinges 18 are fixed to the first sheet 2 (preferably on an upper side of the opening
5, as illustrated in Figures 11 and 12) and are connected to the door 10 using shaped brackets 180 which allow the door 10 to open without the door interfering with the first outer edge 13 of the first sheet 2. Telescopic cylinders 181 (for example, containing fluid, in particular gas) have a first end 182 hinged to the door 10 (advantageously on the extension of the second outer zone 11 if present, when the latter is folded on and makes contact with the second flat surface 9 of the second sheet 7) and a second end 183 hinged to the first sheet 2 (at the first outer edge 13 and advantageously on the extension of the first outer edge 6 if present, when the latter is folded on and makes contact with the second flat surface 4 of the first sheet 2) . The axes of rotation of the first and second ends 182, 183 of the telescopic cylinders 181 are parallel with the axis of rotation formed by the hinges 18. This structure can also allow the door 10 to open by tilting upwards and this open configuration to be stably maintained without effort by the user thanks to the resistance offered by the telescopic cylinders 181 when they are of the fluid type (in particular, containing gas) . The arrows in Figure 12 illustrate the movements of the various parts in the door 10 as it passes between the closed and the open configurations.
In an embodiment illustrated in Figure 4, the panel 1 has the form of a ventilation grille.
In particular, in this embodiment, the door 10 comprises a plurality of slits 19 extending between the board layers covering the door 10, that is to say between the first and the second flat surfaces 8, 9 of the second sheet 7.
The slits 19, preferably equidistant, allow the passage of an air flow between the compartment closed by the door 10 and the environment outside the compartment. The slits may be closed by a light layer of material permeable to air or by a dust filter.
The present invention also relates to a method for making a plasterboard panel for access to a compartment
Said method comprises the steps of making an opening in a first plasterboard sheet 102 consisting of a first board layer 102a, a gypsum plaster panel 102b and a second board layer 102c, and preparing a second plasterboard sheet 107, consisting of a first board layer 107a, a gypsum plaster panel 107b and a second board layer 107c, to form a door for the opening in the first sheet 102. The opening is made by cutting the first sheet 102 at any angle of incidence to the plane in which the first sheet 102 lies. In other words, the angle with which the first sheet 102 is cut to make the opening does not require great precision and may substantially be at a right angle to the plane in which the first sheet 102 lies. This forms a rough edge 1020 of the first sheet 102 (and, therefore, a first rough edge of the opening) .
The second plasterboard sheet 107, forming the door to be inserted in the opening, is also made with a second rough edge 1070 (forming a rough edge of the door) , whose inclination relative to the plane in which the second sheet 107 lies is not important and may also be substantially a right angle to said plane .
As schematically illustrated in Figures 5 and 8, the method also comprises the steps of: milling the first sheet 102 parallel with the first rough edge 1020 of the opening and at a predetermined distance from its first rough edge 1020 to obtain a first wedge-shaped groove 120 with a first opening angle C; milling the second sheet 107 parallel with the second rough edge 1070 of the door at a predetermined distance from its second rough edge 1070 to obtain a second wedge-shaped groove 121 with a second opening angle D.
The first wedge-shaped groove 120 extends at least over the part of the thickness of the first sheet 102 comprising the second board layer 102c and the gypsum plaster sheet 102b of the first sheet 102. Similarly, the second wedge-shaped groove 121 extends at least over the part of the thickness of the second sheet 107 comprising the second board layer 107c and the gypsum plaster sheet 107b of the second sheet 107.
Advantageously, the first wedge-shaped groove 120 does not affect the first board panel 102a of the first sheet 102. Also, the second wedge-shaped groove 121 does not affect the first board panel 107a of the second sheet 107.
The method for making the plasterboard panel for access to a compartment also comprises the step of folding a first portion 103 of the first sheet 102 extending between the first groove 120 and the first rough edge 1020 of the opening until the first opening angle C is closed and a first flared frame 106 is formed, its edges forming the finished edges 113 of the opening. In other words, as illustrated in Figure 6, the first portion 103 of the first sheet 102 must be folded in such a way that the opposite walls of the first groove 120 coincide.
Similarly (see Figure S) , the method comprises the step of folding a first portion 108 of the second sheet 107 extending between the second groove 121 and the second rough edge 1070 of the door until the second opening angle D is closed and a second flared frame 111 is formed, its edges forming the finished edges 114 of the door.
The modulus, that is to say the absolute value, of the flaring angle E of the second frame 111, defined as the angle formed between the finished edge 114 of the door formed by the second frame 111 and a plane perpendicular to the plane in which the door lies, is equal to the modulus of the difference between the second opening angle D and 90°. In other words, the second opening angle D is 90° from the taper angle E.
In particular, in the embodiment illustrated, the value of the taper angle E of the second frame 111 is equal to the difference between the second opening angle D and 90°.
Moreover, the first opening angle C of the first groove 120 is supplementary to the second opening angle D of the second groove 121. In this way, according to requirements, once the taper angle E is defined, the first and second opening angles C, D of the grooves 120, 121 are completely and unambiguously defined.
The first and second frames 106, 111 respectively form a first outer zone of the first sheet 102 in the opening zone and a first outer zone of the door (or of the second sheet 107) .
Advantageously, if the first wedge-shaped groove 120 does not affect the first board panel 102a of the first sheet 102 and the second wedge-shaped groove 121 does not affect the first board panel 107a of the second sheet 107, folding allows the creation of connecting zones between the door and the opening (corresponding to the finished edges 113 of the opening and the finished edges 114 of the door) without zones in which the gypsum plaster is visible. This occurs in particular using a continuous covering consisting of a board layer obtained by folding, in the case of the door, the first board layer 107a of the second sheet 107 which was not affected by the milling and, in the case of the opening, the first layer 102a of the first sheet 102 which was not affected by the milling.
The method also comprises further steps of stiffening and strengthening the first and second frames 106, 111, schematically illustrated in Figures 5, 8, 7 and 9. In particular, in the first portion 103 of the first sheet 102 extending between the first groove 120 and the first rough edge 1020 of the opening, a third wedge-shaped groove 122 is made, having a third opening angle F. Similarly, in the first portion 108 of the second sheet 107 extending between the second groove 121 and the second rough edge 1070 of the door, a fourth wedge- shaped groove 123 is made, having a fourth opening angle G.
These characteristics allow folding of a second portion 104 of the first sheet 102, extending from the third groove 122 to the first rough edge 1020 of the opening, until the third opening angle F is closed. Advantageously, if the third opening angle F, formed by the third wedge-shaped groove 122, is supplementary to the first opening angle C formed by the first wedge-shaped groove 120, the second portion 104 of the first sheet 102 is folded parallel with the extension of the sheet 102 and away from the opening and its resulting finished edges 113, as illustrated in Figure 7.
Similarly, as shown in Figure 9, a second portion 109 of the second sheet 107, extending from the fourth groove 123 to the edge of the door, is folded to close the fourth opening angle G. Advantageously, if the fourth opening angle G, formed by the fourth wedge-shaped groove 123, is supplementary to the second opening angle D formed by the second wedge-shaped groove 121, the second portion 109 of the second sheet 107 is folded parallel with the extension of the door and away from the finished edges 114 of the door.
Advantageously, the third wedge-shaped groove 122 is immediately adjacent to the first groove 120, as shown in Figure 5. Also, the fourth wedge-shaped groove 123 is immediately adjacent to the second groove 121, as shown in Figure 8. In this way, the second portion 104 of the first sheet 102, once folded, makes contact with the second board layer 102c of the first sheet 102 without leaving air spaces, and the second portion 109 of the second sheet 107, once folded, makes contact with the second board layer 107c of the second sheet 107 without leaving air spaces.
Like the first and second grooves 120, 121, the third and fourth grooves 122, 123 respectively extend at least over the part of the thickness comprising the respective second board layer 102c, 107c and the respective gypsum plaster sheet 102b, 107b.
Advantageously, the third and fourth wedge-shaped grooves 122, 123 do not affect the respective first board layer 102a, 107a. This guarantees the continuity of the first board layer 102a of the first sheet 102 on the entire first tapered frame 106, and of the first board layer 107a of the second sheet 107 on the entire second tapered frame 111. The second portions 104, 109 of the panel, respectively extending from the third groove 122 to the first rough edge 1020 of the opening, and from the fourth groove 123 to the second rough edge 1070 of the door, once folded, are preferably glued against the respective part of the panel they make contact with. The present invention achieves the preset aims.
The first and second tapered frames create a connection between the door and the opening in the first plasterboard sheet which is free of gaps.
Moreover, operation of the door remains unchanged even after prolonged use, since, even after a minimum movement of the hinge axis of rotation, the connection between the door and the opening is accomplished without interference between the two parts.
The tapering of the frames allows progressive engagement between the door and the opening. Finally, the method proposed allows a plasterboard panel for access to a compartment to be made in a simple, precise and rapid way, since it is enough to carry out milling with precisely defined and constant opening angles .

Claims

Claims
1. A plasterboard panel (1) for access to a compartment comprising:
- a first plasterboard sheet (2) having a first flat surface (3) and a second flat surface (4) opposite the first (3); the first plasterboard sheet (2) having an opening (5) extending between the first flat surface (3) and the second flat surface (4) ; the first plasterboard sheet (2) also comprising a first outer zone (6) delimiting the opening (5) , extending at least partly in the same plane as the first flat surface (3) ; - a second plasterboard sheet (7) having a first flat surface (8) and a second flat surface (9) opposite the first (8) , forming a door (10) which can be connected to the opening (5) in the first sheet (2); the second plasterboard sheet (7) comprising a second outer zone (11) delimiting the door (10) ; - holding means (12) for stably connecting the door (10) to the opening (5) , for a door (10) closed configuration, and for at least partly removing the door (10) from the opening (5) , for a door (10) open configuration;
- the door (10) closed configuration forming a single plane between the first flat surface (3) of the first plasterboard sheet
(2) and the first flat surface (8) of the second plasterboard sheet (7) ; the panel being characterised in that:
- the first outer zone (6) is tapered transversally to the plane in which the panel (1) lies and narrows from the first flat surface (3) to the second flat surface (4) of the first sheet (2) ;
- the second outer zone (11) is tapered transversally to the plane in which the panel (1) lies and narrows from the first flat surface (8) to the second flat surface (9) of the second sheet (7) .
2. The panel (1) according to claim 1, wherein the first outer zone (6) comprises first outer edges (13) facing the opening (5) of the first sheet (2) and the second outer zone (11) comprises second outer edges (14) around the outside of the door (10) ; the tapering of the first outer zone (6) being formed by a portion inclined at a first constant angle (A) formed between the first flat surface (3) of the first sheet (2) and the first edge (13) ; the tapering of the second outer zone (11) being formed by a portion inclined at a second constant angle (B) formed between the first flat surface (8) of the door (10) and the second edge (14) .
3. The panel (1) according to claim 2, wherein the first angle (A) and the second angle (B) are supplementary angles.
4. The panel (1) according to claim 2 or 3, wherein a portion of the first flat surface (3) of the first sheet (2) extends without interruption forming at least the first outer edges (13) and wherein a portion of the first flat surface (8) of the second sheet (7) extends without interruption forming at least the second outer edges (14) .
5. The panel (1) according to any of the foregoing claims, comprising at least one lock (20) acting between the door (10) and the first sheet (2) in the door (10) closed configuration.
6. The panel (1) according to any of the foregoing claims, wherein the holding means (12) comprise anchoring means (15) , preferably magnetic, acting between the door (10) and the first outer zone (6) .
7. The panel (1) according to any of the claims from 2 to 6, wherein the holding means (12) comprise at least one hinge (18) , preferably recessed, acting between the first edges (13) of the first outer zone (6) and the second edges (14) of the second outer zone (11) .
8. The panel (1) according to any of the claims from 2 to 7, wherein the holding means (12) comprise: - at least one hinge (18) fixed, to the first sheet (2) at the opening (5) and connected to the door (10) by at least one shaped bracket (180) which allows the door (10) to open without interfering with the first outer edges (13) of the first outer zone (6) ;
- at least one telescopic cylinder (181) having a first end (182) hinged to the door (10) and a second end (183) hinged to the first sheet (2);
- the axes of rotation of the first and second ends (182, 183) of the telescopic cylinder (181) being parallel with the axis of rotation formed by the hinge (18) .
9. The panel (1) according to any of the foregoing claims, wherein the door (10) comprises a plurality of through-slits (19) forming a ventilation grille.
10. The panel (1) according to any of the foregoing claims, wherein the first outer zone (6) is formed by an extension of the first plasterboard sheet (2) projecting in the opening (5) to form a first frame.
11. The panel (1) according to claim 10, wherein the extension of the first sheet (2) is folded on the second flat surface (4) of the first sheet (2) .
12. The panel (1) according to claim 11, wherein the extension of the first sheet (2) is in contact with the second flat surface (4) of the first sheet (2) .
13. The panel according to any of the foregoing claims, wherein the second outer zone (11) is formed by an extension of the second plasterboard sheet (7) to form a second frame.
14. The panel (1) according to claim 13, wherein the extension of the second sheet (7) is folded on the second flat surface (9) of the second sheet (7) .
15. The panel (1) according to claim 14, wherein the extension of the second sheet (7) is in contact with the second flat surface (9) of the second sheet (7) .
16. A method for making a plasterboard panel for access to a compartment comprising the steps of:
- making an opening in a first plasterboard sheet (102) consisting of a first board layer (102a) , a gypsum plaster panel (102b) and a second board layer (102c) , thus forming a first rough edge (1020) of the opening;
- preparing a second plasterboard sheet (107) , consisting of a first board sheet (107a) , a gypsum plaster panel (107b) and a second board sheet (107c) , to form a door for the opening in the first sheet (102) and a second rough edge (1070) of the door; the method being characterised in that it comprises the steps of:
- milling the first sheet (102) parallel with the first rough edge (1020) of the opening at a predetermined distance from the first rough edge (1020) to obtain a first wedge-shaped groove (120) with a first opening angle (C) ; - milling the second sheet (107) parallel with the second rough edge (1070) of the door at a predetermined distance from the second rough edge (1070) to obtain a second wedge-shaped groove (121) with a second opening angle (D) ; the first opening angle (C) and the second opening angle (D) being supplementary angles.
17. The method according to claim 16, also comprising the steps of: folding a first portion (103) of the first sheet (102) extending between the first groove (120) and the first rough edge (1020) of the opening to close the first opening angle (C) and form a first tapered frame (106) ; folding a first portion (108) of the second sheet (107) extending between the second groove (121) and the second rough edge (1070) of the door to close the second opening angle (D) and form a second frame (111) ; said second frame (111) forming, relative to a plane perpendicular to the plane in which the door lies, a taper angle (E) ; the modulus of the difference between the second opening angle (D) and 90° being equal to the modulus of the taper angle (E) .
18. The method according to claim 16 or 17, wherein the first and second grooves (120, 121) respectively extend at least over the part of the thickness comprising the respective second board layers (102c, 107c) and the respective gypsum plaster panels (102b, 107b) .
19. The method according to claim 18, wherein the first and second grooves (120, 121) do not extend to the respective first board layers (102a, 107a) .
20. The method according to any of the claims from 16 to 19, comprising the steps of milling the first portion (103) of the first sheet (102) parallel with the first rough edge (1020) of the opening between the first groove (120) and the first rough edge (1020) to obtain a third wedge-shaped groove (122) with a third opening angle (F) ; milling the first portion (108) of the second sheet (107) parallel with the second rough edge (1070) of the door between the second groove (121) and the second rough edge (1070) to obtain a fourth wedge-shaped groove (123) with a fourth opening angle (G) .
21. The method according to claim 20, wherein the third groove (122) is adjacent to the first groove (120) and wherein the fourth groove (123) is adjacent to the second groove (121) .
22. The method according to claim 20 or 21, wherein the third opening angle (F) is supplementary to the first opening angle (C) .
23. The method according to claim 20 or 21 or 22, wherein the fourth opening angle (G) is supplementary to the second opening angle (D) .
24. The method according to any of the claims from 20 to 23 comprising the steps of: folding a second portion (104) of the first sheet (102) , extending from the third groove (122) to the first rough edge (1020) of the opening, until the third opening angle (F) is closed; folding a second portion (109) of the second sheet (107) , extending from the fourth groove (123) to the second rough edge (1070) of the door until the fourth opening angle (G) is closed.
25. The method according to any of the claims claim from 20 to 24, wherein the third and fourth grooves (122, 123) respectively extend at least over the part of the thickness comprising the respective second board layers (102c, 107c) and the respective gypsum plaster panels (102b, 107b) .
26. The method according to claim 25, wherein the third and fourth grooves (122, 123) do not extend to the respective first board layers (102a, 107a) .
EP05793034A 2004-10-13 2005-10-05 Plasterboard panel for access to a compartment Active EP1807580B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL05793034T PL1807580T3 (en) 2004-10-13 2005-10-05 Plasterboard panel for access to a compartment
CY20101101054T CY1111055T1 (en) 2004-10-13 2010-11-24 GYSOSANIDA PANEL FOR ACCESS TO A BOX

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000048A ITRN20040048A1 (en) 2004-10-13 2004-10-13 PLASTERBOARD PANEL FOR ACCESS TO A COMPARTMENT AND METHOD FOR MAKING A PANEL IN PLASTERIZED ACCESS TO A COMPARTMENT
PCT/IB2005/003197 WO2006040677A1 (en) 2004-10-13 2005-10-05 Plasterboard panel for access to a compartment and method for making a plasterboard panel for access to a compartment

Publications (2)

Publication Number Publication Date
EP1807580A1 true EP1807580A1 (en) 2007-07-18
EP1807580B1 EP1807580B1 (en) 2010-09-08

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EP05793034A Active EP1807580B1 (en) 2004-10-13 2005-10-05 Plasterboard panel for access to a compartment

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US (1) US20090025326A1 (en)
EP (1) EP1807580B1 (en)
AT (1) ATE480683T1 (en)
CY (1) CY1111055T1 (en)
DE (1) DE602005023505D1 (en)
DK (1) DK1807580T3 (en)
ES (1) ES2351278T3 (en)
HR (1) HRP20100658T1 (en)
IT (1) ITRN20040048A1 (en)
MX (1) MX2007004323A (en)
PL (1) PL1807580T3 (en)
PT (1) PT1807580E (en)
WO (1) WO2006040677A1 (en)

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CN102227052A (en) * 2011-03-24 2011-10-26 青岛鸿森重工有限公司 Cooperation apparatus of permanent-magnetic door lock of power distribution cabinet of machining center
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Also Published As

Publication number Publication date
PT1807580E (en) 2010-12-07
DK1807580T3 (en) 2011-01-03
ATE480683T1 (en) 2010-09-15
PL1807580T3 (en) 2011-02-28
WO2006040677A1 (en) 2006-04-20
HRP20100658T1 (en) 2011-01-31
ITRN20040048A1 (en) 2005-01-13
EP1807580B1 (en) 2010-09-08
CY1111055T1 (en) 2015-06-11
DE602005023505D1 (en) 2010-10-21
MX2007004323A (en) 2007-06-20
US20090025326A1 (en) 2009-01-29
ES2351278T3 (en) 2011-02-02

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