FR2636665A1 - DOOR HAVING AN INNER SHIELD PLATE - Google Patents

Abstract

The present invention relates to a door of the type comprising a frame 110 made of wood or the like, two panels 120, 122 fixed on either side of the frame and a metal shielding plate 130 embedded peripherally in the inner faces of the frame. According to the invention, it further comprises profiled metal reinforcing elements 150, 160 fixed to the frame and each comprising two essentially parallel and spaced branches 150c, 150d; 160a, 160b overlapping the edges of the sheet 130 at least over a substantial part of its periphery.

Description

The present invention relates generally to doors for

building, and it concerns more

  particularly improvements to the armored doors.

  It is already known in the art

  your armored planes that include a frame bordered by two

  thin panels and between the panels, a filling included

  a shielding metal sheet.

  Such a door is represented on the

  1 of the drawings. As can be seen, the plate 130 is embedded in a relatively short distance in the

  elements of the frame 110, conventionally made of wood.

  A disadvantage of this type of door is

  in that it is extremely easy for an arson

  the shielding plate by folding it with a suitable tool. More specifically, it is relatively easy, using a crowbar or the like, to come to seize the

  sheet metal from behind, having previously attacked local-

  the wooden frame that traps this sheet.

  The present invention aims to overcome this problem.

  and to propose ways that, while economic

  simple to put in place, greatly increase the

  resistance of the armor plate to tearing.

  For this purpose, the present invention relates to a door, of the type comprising a wooden frame or the like, two panels fixed on either side of the frame and a metal shielding sheet embedded peripherally in the

  inner faces of the frame, characterized in that

  furthermore takes profiled metal reinforcement elements

  attached to the frame and each having two branches

  parallel and spaced overlapping the edges

  at least a substantial part of its

  phérie. Preferred aspects of the device according to the invention are the following: - at least along one edge of the sheet is provided a profiled reinforcing element comprising a U-shaped portion, within which said edge the sheet is tightly housed, and two fixing wings substantially perpendicular to the sheet,

  - each frame element receiving an element

  profiled reinforcing member has in its inner face a cavity whose shape is complementary to that of the profile of the reinforcing element on the opposite side to the sheet,

  each wing of the reinforcing element

  holes for fastening screws to the associated frame member, along one edge of the sheet there is provided a profiled reinforcement element of substantially U-shaped cross section embedded in a frame member;

  - the spacing between the branches of the

  "U" reinforcement is substantially greater than the thickness of the

  the sheet is embedded in a groove in the inner face of the associated frame member, while

  the "U" reinforcement element is embedded in a box

  complementarily formed in the outer face of said element

framework,

  - an additional framework element is juxtaposed

  placed on the outside of the frame member receiving the sheet and the "U" reinforcing element, the "U" reinforcing element is constituted

  by a vertical stiffening of the door on the

  re, - the additional frame element is embedded a second stiffener arranged symmetrically with respect to the

  plan that separates juxtaposing frame elements.

  Other aspects and advantages of this

  invention will appear better on reading the description

  following detailed description of preferred embodiments thereof, given by way of example and with reference to the accompanying drawings, in which: - Figure 1, discussed in the introduction, is a cross-sectional view of an armored plane door according to the prior art,

  FIG. 2 is a cross sectional view

  on an enlarged scale of a portion of a flat door according to a first embodiment of the invention; - FIG. 3 is a still enlarged view of a portion of FIG.

  FIG. 4 is a cross sectional view

  dirty part of a flat door according to a second embodiment of the invention,

  FIG. 5 is a cross sectional view

  a variant of the second embodiment illustrated in FIG. 4, and

  FIG. 6 is a cross sectional view

  dirty of a flat door combining two embodiments

of the invention. -

  Referring firstly to Figure 1, a flat door which is particularly applicable to the invention, generally indicated 100, comprises a wooden peripheral frame 110 which can be observed both

lateral amounts 110a, 110b.

  In a well known manner, two panels 120,

  122 are attached to the frame on either side of it.

  This known flat door further comprises a thin shielding sheet 130 which is embedded by its edges in the frame 110 by a predetermined distance, and filler panels 140, 142, also involved in the reinforcement of the door, are provided on both sides. else of the sheet 130 and occupy all the space delimited by the

  frame 110, the sheet 130 and the respective panel 120 or 122.

  A flat door of this known type presents

  the disadvantages mentioned in the introduction.

  Referring now to FIGS.

  3, a first embodiment of the invention has been illustrated.

  invention, according to which a metal profile 150 is

  wedged between the edge of the sheet 130 and the frame member 110b considered.

  This profile 150, better visible on the

  FIG. 3 comprises two coplanar wings 150a, 150b, presenting

  each of the holes 152 regularly distributed for fastening screws 154 (not shown in Figure 3); the

  wings 150a, 150b delimit between them a portion of

  "U" shape with both branches indicated

  at 150c, 150d and whose peak is designated 150e.

  Preferably, this metal section is made of folded sheet. It is dimensioned so that the edge of the shielding plate 130 can be housed tightly inside the "U", as shown in FIG.

figure 3.

  The inner face-of the frame element

  b is dug as illustrated so that it pre-

  a cavity whose shape is complementary to that of the profile. Thus, once the profile 150 mounted and fixed

  in place, the outer faces of the wings 150a, 150b, (left

  shown in Figures 2 and 3) are flush with the

  inner face of the frame member 110Ob.

  Preferably, such a profile is provided along each of the vertical and horizontal elements of the frame 110, so that the edges of the sheet 130 are embedded in profiles over the entire periphery.

of said sheet.

  Thus, the shielding plate 130 is embedded with a much greater strength in the frame which

  surrounds it, which gives the door a better

burglary.

  Specifically, tests have found that adding such profiles, in themselves cheap and easy to assemble, we obtained a considerable increase in resistance to burglary, as we go

  see it later in numerical examples.

  Of course, in some cases, it is possible to provide profiles 150 only on a part of the periphery of the door, for example in the case where certain edge zones of the sheet are themselves protected,

  in the closed position, by parts of the door frame.

  The mounting of a shielded door according to this embodiment of the invention is carried out in a similar manner to that of the known armored door of FIG. 1, except that the frame elements, of appropriate section such that illustrated in Figure 2, and the metal profiles are assembled prior to the establishment of the frame

110 around the shield 130.

  FIG. 4 shows a second embodiment of the invention. On this figure and

  on the following, elements or parts that are identical or

  of those in Figures 1 to 3 are designated by the same

reference numbers.

  In this embodiment, at least one of the uprights of the frame 110 comprises, in known manner, a stiffener 160 in the form of a profiled powder of "U" section which is embedded by its two branches 160a, 160b in a wooden element 110c of the frame; another frame member 110d, located on the outside (on the right in FIG. 4), completes this assembly by immobilizing in place the

beam 160.

  According to the invention, such a profile 160 is used to reinforce the assembly of the shield 130

  on the frame. For this purpose, the sheet 130 is embedded directly

  in a groove 110e of the frame member 110c away from the profile 160, over a substantial length

  such that the two branches 160a, 160b of said profile come

  The frame element 110c is appropriately shaped, that is to say, it has a longitudinal direction. side a groove that intimately receives the considered edge of the sheet 130, and the other side two grooves belonging to a cavity whose shape is complementary to that of the beam 160. In the present example, the sheet 130

  enters the inner space of the "U" on about the self

of its depth.

  Although the sheet 130 is not in direct contact with the branches of the metal profile, but

  separated from said branches by wooden parts belonging to

  the frame element 110c, we obtain here again a

  significant strengthening of the door in relation to the

guration known from Figure 1.

  Of course, profiles such as 160 can

  all around the sheet 130, the frame 110 of the door being designed in correspondence. But preferably, there is provided in such a flat door a single stiffener 160, arranged vertically over the entire height of the door in its region opposite the hinges and reinforcing

  one of the long edges of the sheet, while the three

  very edges of said sheet will be reinforced by profiles

  150 such as those illustrated in Figures 2 and 3.

  There is shown in FIG.

  FIG. 4 is an embodiment of the embodiment of the embodiment. In order to further improve the stability of the door, two stiffeners 160, 170 are provided, with the stiffener 160 being similar to that of FIG. in its form, disposition and function. The stiffener 170, here of the same shape and dimension as the beam 160, is embedded in the frame member 110d

adjacent to the element 110c.

  FIG. 6 illustrates an alternative embodiment of the invention in which a double stiffener 160, 170 is provided along the large edge of the sheet opposite the hinges, that is to say on the side of the lock, the other three edges of the sheet 130 being reinforced by profiles similar to that of Figures 2 and 3.

  We will now indicate data con-

  cretes for the realization of the armored doors

to the invention.

  The frame 110 may be made for example of exotic wood, pine or fir, with a thickness

of the order of 33 mm.

  The outer panels 120, 122 are

  tagbly made up of sheets of wood fiber

  hard of a thickness of the order of 3 to 4 mm.

  The sheet 130 may be a steel sheet,

for example 3 mm thick.

  The profiles 150 of Figures 2 and 3 can be obtained by folding a steel sheet of 2 or 2.5 mm thick, while the beams "U", 160, 170 of the

  FIGS. 4 & 6 are, for example, "U" shaped profiles

25 x 25 x 25 x 2.5 mm.

  Finally, the filling elements 140, 142

  may consist for example of panels of agglomerates

  mere or expanded polystyrene, of a thickness of the order

16 mm.

  In support of what has been stated above,

  ments in accordance with the present invention have made it possible

  hold burglar resistance in the range of 10 to 20

  min. depending on the nature and dimensions of the materials chosen

  sis, during the tests corresponding to the standards 20311 and 20551. For comparison, a door of the technique

  the type shown in FIG.

  about 2 to 5 minutes during the same tests.

  Of course, the present invention is not

  in no way limited to the embodiments described above.

  above and shown in the drawings, but those skilled in the art will be able to make any variant or modification thereof

in keeping with his spirit.

  In particular, materials other than those mentioned may be used,

  provided that they have similar characteristics

  ble. Finally, the present invention applies

  both flat doors and doors said dressed.

Claims (11)

  1. Door of the type comprising a frame (110) made of wood or the like, two fixed panels (120, 122) of   on both sides of the frame and a metal sheet of   ge (130) peripherally embedded in the integral faces   frame of the frame, characterized in that it further comprises profiled metal reinforcing elements (150,) fixed to the frame and each having two branches substantially parallel and spaced (150c, 150d; 160a, b) overlapping the edges of the sheet (130) at least   on a substantial part of its periphery.   2. Door according to claim 1, characterized in that at least along one edge of the sheet (130) is provided a profiled reinforcing element (150) comprising a portion shaped "U" (150c, 150d , 150e), within which said edge of the sheet is tightly housed, and   two fixing wings (150a, 150b), essentially diculaires to the sheet.   Door according to claim 2, characterized in that each frame element (110b) receiving an element   shaped reinforcement has in its inner face a   whose form is complementary to that of the profile of   the reinforcing member (150) on the side opposite the sheet (130).   4. Door according to claim 3, characterized in that each flange (150a, 150b) of the reinforcing element (150) has holes (152) for fastening screws (154).   to the associated frame member (110b).   Door according to one of Claims 1 to 4,   characterized in that along one edge of the sheet is   saw a substantially square shaped sectional reinforcement element of #U "(160) embedded in an element of frame (110c).   6. Door according to claim 5, characterized in that the spacing between the branches (160a, 160b) of   the "U" reinforcing element (160) is substantially greater than   to the thickness of the sheet (130).   7. Door according to one of claims 5 and   6, characterized in that the sheet (130) is embedded in a groove (110e) of the inner face of the associated frame member (110c), while the "U" reinforcing member (160) is recessed a complementary housing formed   in the outer face of said frame member.   Door according to Claim 7, characterized   in that an additional frame element (110d) is juxtaposed   placed on the outside of the frame member (110c) receiving the   sheet (130) and the U-shaped reinforcing member (160).   9. Door according to claim 8, characterized in that the "U" reinforcing element (160) is constituted by   a vertical stiffener of the door located on the lock side.   Door according to claim 9, characterized   in that in the additional frame element (110d) is   castrated a second stiffener (170) arranged symmetrically with respect to the plane which separates the juxtapose frame elements (110c, 110d).   11. Door according to one of claims 1 to 10,   characterized in that it further comprises, in two   these located on either side of the sheet (130) and delimited by said sheet, the frame (110) and the panels (120, 122),   filling panels (140, 142).