Door leaf
The burglar-proof door leaf design addresses the challenge of slowing down intruders by using a core panel with internal and external sheets featuring cutouts and tabs, fixed with glue and nails, which enhances mechanical strength and flexibility, making it difficult and dangerous for intruders to break in.
Patent Information
- Application Number
- FR2023005386
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-05-31
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2043-05-31
AI Technical Summary
Existing burglar-proof door solutions face challenges in effectively slowing down intruders while maintaining an economical design, as reinforcing parts of the door can create weaknesses and provide support for the intruder.
A burglar-proof door leaf design featuring a core panel with an internal peripheral frame, a first sheet with cutouts forming tabs, and a second sheet with similar cutouts, all fixed with glue and nails to enhance mechanical strength and flexibility, thereby slowing down intruders.
The design effectively slows down intruders by requiring them to peel back tabs one by one, increasing the difficulty and danger of breaking in, while maintaining an economical and robust structure.
Smart Images
Figure 00000012_0000 
Figure 00000013_0000
Abstract
Description
Title of the invention: Door leaf Technical field
[0001] The invention relates to the technical field of door leaves and in particular burglar-proof door leaves. State of the art
[0002] For many years, break-ins have been increasing and buildings are now increasingly fitted with burglar-proof openings to slow down or even prevent intrusions.
[0003] It is therefore known to use openings and in particular doors whose frame and / or opening have a reinforced connection or whose mechanical reinforcement of the frame and / or opening are reinforced. However, reinforcing part of the opening causes a weakness near the reinforcement point but can also provide better support for the burglar.
[0004] It is also known to modify the design of the leaves to increase the rigidity or flexibility in order to slow down the burglar. However, this modification is not optimal since the door frame becomes a weak point facilitating the progression of the burglar.
[0005] The invention therefore falls within this context and seeks to resolve all of the aforementioned drawbacks. Thus, the invention seeks to propose a burglar-proof door that can slow down a burglar, and whose design is economical compared to the solutions already present on the market. Presentation of the invention.
[0006] The subject of the invention is a leaf comprising a core panel comprising an internal peripheral frame; at least one first sheet comprising a plurality of cutouts each extending from one of the edges of said sheet towards the inside of said sheet so as to form a plurality of tabs, said sheet being mounted on a first face of the core panel and a first face of the internal peripheral frame by at least one fixing means, said fixing means being arranged so that each tab is fixed to said first face of the core panel and to said internal peripheral frame; at least one first facing sub-panel adapted to cover said first sheet.
[0007] The leaf can be a leaf of a door block. The core panel can be made of wood particle board, flax shives, wood fibers, medium for example MDF (medium density fiber in English or fibers of average density in French) or for example HDF (high density fiber in English or fibers of high density in French). The core panel may comprise an assembly of a plurality of panels, for example two panels or for example three panels arranged to provide additional characteristics, for example acoustic or thermal. The core panel may be inserted into an internal peripheral frame. The internal peripheral frame may comprise two uprights and two crosspieces assembled two by two by stapling. The internal peripheral frame may be fixed to the core panel by stapling.
[0008] The core panel may comprise a first face in continuity with the first face of the internal peripheral frame. The first sheet may be mounted so that it covers the first face of the core panel and the first face of the internal peripheral frame. The first sheet may be made of raw steel, electro-galvanized steel, galvanized steel or stainless steel. The first sheet may advantageously comprise sixteen cutouts. The first sheet may comprise eight cutouts each extending from one of the edges of said first sheet towards the inside of said first sheet. The cutouts may be horizontal over a portion of the perimeter of the leaf. The cutouts may make it possible to delimit a plurality of tabs. The cutouts may be made by punching. In another embodiment, the cutouts may be made by laser cutting.Cutouts can increase the flexibility of the leaf during impacts, particularly by a soft and heavy body, for example a body that launches itself at high speed against the leaf. Cutouts can increase the difficulty of breaking in. Indeed, a burglar wishing to cross the leaf must peel back the first sheet, tab by tab in order to be able to fold back or tear off the said first sheet. Cutouts can thus slow down the burglar. Cutouts can increase the danger for the burglar who must peel back the tabs one after the other, becoming dangerous for him due to the cutting of the first sheet which can be sharp.
[0009] Advantageously, the at least one fixing means comprises glue arranged on a periphery of the first face of the core panel and on the first face of the internal peripheral frame.
[0010] The glue can be positioned on the periphery around the perimeter of the first face of the core panel but also on the first face of the peripheral frame. The positioning of the glue can increase the mechanical strength at the level of the internal peripheral frame. Each tab is thus glued both to the core panel and to the internal peripheral frame.
[0011] Advantageously, the at least one fixing means comprises at least one point bonding on the first face of the core panel.
[0012] The glue can be positioned punctually in the center of the sheet metal. The glue can be positioned locally at the level of each of the tabs. The posi Applying the glue punctually and / or locally can increase the elasticity in the center of the leaf.
[0013] Advantageously, the at least one fixing means comprises a plurality of nails arranged so that each tab is nailed to the internal peripheral frame of the core panel.
[0014] The leaf may advantageously include at least one nail per tab. The head of the nail may be embedded in the sheet metal to increase the hold. The use of nails may increase the danger of cutouts and in particular of the tabs due to the holding of the head on said sheet metal. The nails may improve the mechanical strength of the sheet metal on the secondary frame. The nails may, due to their mechanical strength, slow down an attempt to tear off the sheet metal.
[0015] Advantageously, the leaf comprises a second sheet mounted on a second face of the core panel and on a second face of the internal peripheral frame and a second facing sub-panel arranged so that the first and second sheets and the first and second facing sub-panel are symmetrical on either side of said core panel and arranged to form a core.
[0016] The leaf can advantageously be mounted symmetrically, which can make it possible to have a leaf having the same degree of performance regardless of the attack face of the burglar.
[0017] The second sheet can be mounted so that it covers the second face of the core panel and the second face of the internal peripheral frame. The second sheet can be made of raw steel, electrogalvanized steel, galvanized steel or stainless steel. The second sheet can advantageously have sixteen cutouts. The second sheet can have eight cutouts each extending from one of the edges of said second sheet towards the inside of said second sheet. The cutouts can be horizontal over a portion of the perimeter of the leaf. The cutouts can be used to delimit a plurality of tabs. The cutouts can be made by punching. In another embodiment, the cutouts can be made by laser cutting. The cutouts can be used to accentuate the flexibility of the leaf during impacts, in particular by a soft and heavy body, for example a body which is thrown at high speed against the leaf.Cutouts can make it more difficult to break in. In fact, a burglar wishing to break through the door leaf must peel back the second sheet, tab by tab, in order to fold back or tear off the second sheet. Cutouts can therefore slow down the burglar. Cutouts can increase the danger for the burglar, who must peel back the tabs one after the other, becoming dangerous for him due to the cutting of the second sheet, which can be sharp.
[0018] The glue can be positioned on the periphery around the perimeter of the first face of the core panel but also on the first face of the peripheral frame. The positioning of the glue can increase the mechanical strength at the level of the internal peripheral frame. Each tab is thus glued both to the core panel and to the internal peripheral frame.
[0019] The glue can be positioned punctually in the center of the sheet. The glue can be positioned locally at each of the tabs. Positioning the glue punctually and / or locally can increase the elasticity in the center of the leaf.
[0020] The leaf may advantageously include at least one nail per tab. The head of the nail may be embedded in the sheet metal to increase the hold. The use of nails may increase the danger of cutouts and in particular of the tabs due to the holding of the head on said sheet metal. The nails may improve the mechanical strength of the sheet metal on the secondary frame. The nails may, due to their mechanical strength, slow down an attempt to tear off the sheet metal.
[0021] Advantageously, each sheet comprises at least one notch on one of the edges of said sheet comprising the cutouts, the notch comprising a plurality of pre-cutouts so as to form a plurality of breakable elements.
[0022] Each notch may be intended to facilitate machining and service drilling for the integration of the lock. The leaf may advantageously include two symmetrical notches to allow the reversibility of said leaf.
[0023] The breakable elements can be detachable and can increase the danger of the break-in and cause the break-in to waste time due to the detachment of the elements. Each time an element is cut, the break-in will have to start again with the next element.
[0024] Advantageously, the leaf comprises an external peripheral frame mounted on a first facing panel, said external peripheral frame being adapted to frame the internal peripheral frame and said first facing panel being adapted to cover the first facing sub-panel and the external peripheral frame.
[0025] The external peripheral frame may comprise two uprights and two crosspieces which may be assembled two by two, in particular by stapling. The external peripheral frame may frame the core to be opposite the internal peripheral frame.
[0026] There are two of them, one on each side of the leaf. The facing panels are adapted to receive the decorative panels of the opening. The first facing panel can cover the first sub-facing panel.
[0027] Advantageously, the leaf comprises a second facing panel adapted to cover the second facing sub-panel and the peripheral frame. external.
[0028] The second facing panel can cover the second sub-facing panel.
[0029] Advantageously, the leaf comprises a plurality of reinforcing members adapted to reinforce the holding between them of the external peripheral frame and the internal peripheral frame.
[0030] The reinforcing members may be pins adapted to be forced and glued into a lateral bore of the outer peripheral frame and the inner peripheral frame.
[0031] The invention also relates to a method for manufacturing a leaf comprising the following steps: stapling the internal peripheral frame to the core panel; fixing the first sheet on the first face of the core panel and the first face of the internal peripheral frame; gluing the first facing sub-panel on the first sheet; fixing the second sheet on the second face of the core panel and the second face of the internal peripheral frame.
[0032] Advantageously, the fixing steps each comprise a step of gluing the sheet metal to one of the faces of the core panel and one of the faces of the internal peripheral frame and a step of fixing each tab by nailing to the internal peripheral frame.
[0033] Advantageously, the method comprises the following steps: bonding the external peripheral frame to the first facing panel; bonding the first facing panel to the first sub-panel so that the external peripheral frame frames the internal peripheral frame; bonding the second facing panel to the second sub-panel, so that it covers the external peripheral frame; fixing the external peripheral frame to the internal peripheral frame by the reinforcing member. Brief description of the figures.
[0034] Other advantages and characteristics of the present invention are now described with the aid of examples which are purely illustrative and in no way limitative of the scope of the invention, and from the appended drawings, drawings in which the various figures represent:
[0035] [Fig-1] represents an exploded and perspective view of a leaf according to one embodiment.
[0036] [Fig.2] represents a perspective view of a sheet of a leaf, comprising at least one fixing means.
[0037] In the following description, elements that are identical, by structure or by function, appearing in different figures retain, unless otherwise specified, the same re- references. Description of the figures.
[0038] [Fig. 1] shows an exploded perspective view of a leaf 1 according to an embodiment of the invention. The leaf 1 is also described in connection with [Fig. 2] showing a perspective view of a sheet of the leaf according to an embodiment of the invention.
[0039] The leaf 1 is a leaf of a door block. The leaf 1 is constructed symmetrically, which makes it possible to have a leaf 1 having the same degree of performance regardless of the attack face of the burglar.
[0040] The leaf 1 comprises a core panel 10 comprising an internal peripheral frame 101. The internal peripheral frame 101 comprises two uprights and two crosspieces assembled two by two by stapling. The core panel 10 is inserted into the internal peripheral frame 101. The core panel 10 is fixed to the internal peripheral frame 101 by staples. The core panel 10 comprises a first face in continuity with the first face of the internal peripheral frame 101 and a second face in continuity with the second face of the internal peripheral frame 101.
[0041] The leaf comprises a first sheet 11 and a second sheet 14. Each sheet 11, 14 is respectively mounted on the first face of the core panel and a first face of the internal peripheral frame and on the second face of the core panel and a second face of the internal peripheral frame.
[0042] Each sheet 11, 14 comprises a plurality of cutouts 110, 140 extending from one of the edges of said sheets 11, 14 towards the inside of said sheets 11, 14 so as to form a plurality of tabs 111, 141. Each sheet 11, 14 comprises sixteen cutouts 110, 140, namely eight cutouts 110, 140 each extending from one of the edges of said sheet 11, 14 towards the inside of said sheet 11, 14 and eight cutouts 110, 140 each extending from the other of the edges of said sheet 11, 14 towards the inside of said sheet 11, 14. The cutouts 110, 140 are substantially horizontal over a portion of the periphery of the leaf.
[0043] Each sheet 11, 14 comprises a notch 112, 142 on each of the edges of said sheet 11, 14 comprising the cutouts 110, 140, the notch 112, 142 comprising a plurality of pre-cutouts (not shown) so as to form a plurality of breakable elements (not shown). The notches 112, 142 are symmetrical.
[0044] Each sheet 11, 14 is held by at least one fixing means.
[0045] The fixing means comprises glue 113, 143 arranged on a periphery of the core panel 10 and on the internal peripheral frame 101 so that each tab 111, 141 is fixed to the face of the core panel 10 and to the corresponding internal peripheral frame 101. The fixing means comprises glue 113, 143 arranged punctually on the core panel 10.
[0046] The fixing means comprises a plurality of nails 114, 144 arranged so that each tab 111, 141 is nailed to the internal peripheral frame 101 of the core panel 10. Each nail head 114, 144 is embedded in the sheet 11, 14.
[0047] The leaf 1 comprises two facing sub-panels 12, 15 each adapted to cover one of the sheets 11, 14.
[0048] The leaf 1 comprises an external peripheral frame 16 mounted on a first facing panel 13. The external peripheral frame 16 comprises two uprights and two crosspieces which are assembled two by two by stapling. The external peripheral frame 16 is opposite the internal peripheral frame 101.
[0049] The outer peripheral frame 16 is adapted to frame the inner peripheral frame 101 and said first facing panel 13 is adapted to cover the first facing sub-panel 12 and the outer peripheral frame 16. The leaf comprises a second facing panel 17 adapted to cover the second facing sub-panel 15 and the outer peripheral frame 16. The facing panels 13, 17 are adapted to receive decorative panels (not shown) of the leaf 1.
[0050] The leaf 1 comprises a plurality of reinforcing members 170 adapted to reinforce the holding between them of the external peripheral frame 16, of the internal peripheral frame 101.
[0051] The reinforcing members 170 are pins adapted to be forced into and glued into a lateral bore of the external peripheral frame 16 and the internal peripheral frame 101.
[0052] The leaf 1 is manufactured by stapling the internal peripheral frame 101 to the core panel 10 and then fixing the first sheet 11 on the first face of the core panel 10 and the first face of the internal peripheral frame 101. The first sub-panel 12 is glued to the first sheet 11 and the second sheet 14 is fixed to the second face of the core panel 10 and the second face of the internal peripheral frame 101. Each tab 111, 141 is also fixed by nailing to the internal peripheral frame 101.
[0053] The external peripheral frame 16 is glued to the first facing panel 13 then the first facing panel 13 is glued to the first sub-panel 12 so that the external peripheral frame 16 frames the internal peripheral frame 101 then the second facing panel 17 is glued to the second sub-panel 15, so that it covers the external peripheral frame 16. Finally, the external peripheral frame 16 is fixed to the internal peripheral frame 101 by the reinforcing members 170.
[0054] The foregoing description clearly explains how the invention achieves the objectives it sets for itself, namely how to provide a burglar-proof door that can slow down a burglar, and whose design is economical compared to solutions already present on the market, by providing a leaf comprising a core panel comprising an internal peripheral frame and at least one first sheet comprising a plurality of cutouts each extending from one of the edges of said sheet towards the inside of said sheet so as to form a plurality of tabs, said sheet being mounted on a first face of the core panel and a first face of the internal peripheral frame by at least one fixing means, said fixing means being arranged so that each tab is fixed to said first face of the core panel and to said internal peripheral frame.
[0055] In any event, the invention cannot be limited to the embodiments specifically described in this document, and extends in particular to all equivalent means and to any technically effective combination of these means.
Claims
Claims
1. Leaf (1) comprising: - A core panel (10) comprising an internal peripheral frame (101); - At least one first sheet (11) comprising a plurality of cutouts (110) each extending from one of the edges of said sheet (11) towards the inside of said sheet (11) so as to form a plurality of tabs (111), said sheet (11) being mounted on a first face of the core panel (10) and a first face of the internal peripheral frame (101) by at least one fixing means, said fixing means being arranged so that each tab (111) is fixed to said first face of the core panel (10) and to said internal peripheral frame (101); - At least one first facing sub-panel (12) adapted to cover said first sheet (11).
2. Leaf (1) according to claim 1, characterized in that the at least one fixing means comprises glue (113) arranged on a periphery of the first face of the core panel (10) and on the first face of the internal peripheral frame (101).
3. Leaf (1) according to claim 2, characterized in that the at least one fixing means comprises at least one point bonding (113) on the first face of the core panel (10).
4. Leaf (1) according to claim 1, characterized in that the at least one fixing means comprises a plurality of nails (114) arranged so that each tab (111) is nailed to the internal peripheral frame (101) of the core panel (10).
5. Leaf (1) according to one of the preceding claims, characterized in that it comprises a second sheet (14) mounted on a second face of the core panel (10) and on a second face of the internal peripheral frame (101) and a second facing sub-panel (15) arranged so that the first (11) and the second sheet (14) and the first (12) and the second facing sub-panel (15) are symmetrical on either side of said core panel (10) and arranged to form a core.
6. Leaf (1) according to one of the preceding claims, characterized in that each sheet (11, 14) comprises at least one notch (112, 142) on one of the edges of said sheet (11, 14) comprising the cutouts (110, 140), the notch (112, 142) comprising a plurality of pre-cutouts so as to form a plurality of breakable elements.
7. Leaf (1) according to one of the preceding claims, characterized in that it comprises an external peripheral frame (17) mounted on a first facing panel (13), said external peripheral frame (17) being adapted to frame the internal peripheral frame (101) and said first facing panel (13) being adapted to cover the first facing sub-panel (12) and the external peripheral frame (17).
8. Leaf (1) according to one of the preceding claims, characterized in that it comprises a second facing panel (16) adapted to cover the second facing sub-panel (15) and the external peripheral frame (17).
9. Leaf (1) according to one of the preceding claims, characterized in that it comprises a plurality of reinforcing members (160) adapted to reinforce the holding between them of the external peripheral frame (17), of the internal peripheral frame (101).
10. Method for manufacturing a leaf (1) according to one of claims 1 to 9, characterized in that it comprises the following steps: - Stapling the internal peripheral frame (101) to the core panel (10); - Fixing the first sheet (11) on the first face of the core panel (10) and the first face of the internal peripheral frame (101); - Gluing the first sub-panel (12) on the first sheet (11); - Fixing the second sheet (14) on the second face of the core panel (10) and the second face of the internal peripheral frame (101).
11. Method of manufacturing a leaf according to claim 10 characterized in that the fixing steps each comprise a step of gluing (113, 143) the sheet metal (11, 14) on one of the faces of the core panel (10) and one of the faces of the internal peripheral frame. (101) and a step of fixing each tab (111, 141) by nailing (114, 144) to the internal peripheral frame (101).
12. Method of manufacturing a leaf (1) according to one of claims 9 or 10, characterized in that it comprises the following steps: - Bonding (113, 143) of the external peripheral frame (17) on the first facing panel (13) - Bonding (113, 143) of the first facing panel (13) onto the first facing sub-panel (12) so that the external peripheral frame (17) frames the internal peripheral frame (101); - Gluing (113, 143) the second facing panel (16) onto the second sub-panel (15), so that it covers the external peripheral frame (17); - Fixing the external peripheral frame (17) to the internal peripheral frame (101) by the reinforcing member (160).