Integrated draw bar for woodwork element

Abstract

The present invention relates to a pull bar for a joinery element, said joinery element comprising at least two opposing faces delimiting an internal space, said pull bar comprising: - a plate through which an orifice passes, said plate being intended to be housed inside said internal space of said joinery element, applied against a first of said faces through which at least one opening passes, in such a way that said orifice of said plate coincides at least in part with said opening of said face; - a shell comprising a wall delimiting a bearing surface and a cavity, said shell being intended to be housed inside said internal space of said joinery element with its bearing surface applied against said plate and said cavity housed in said internal space of said joinery element;said plate partially closing said cavity in such a way that said orifice constitutes an orifice for the insertion of fingers into said cavity and that at least a portion of said plate closing said cavity constitutes a gripping area for said fingers, said plate and / or said shell being made of material(s) having a coefficient of thermal conductivity less than or equal to 300 W / (mK).

Description

1. Domaine de l'invention

[0001] The field of the invention is that of joinery elements for buildings, such as doors, windows...

[0002] More specifically, the invention relates to the pull bars used to operate the opening parts of such joinery elements. 2. Art antérieur

[0003] Joinery elements, such as entrance doors, classically include a frame 10 fixed in a hole made in a wall of a building, and an opening 11 allowing the opening defined by the frame to be closed or opened.

[0004] To maneuver the opening 11 so as to move it relative to the fixed 10 to close or release the opening, the opening is conventionally fitted with a handle.

[0005] Various types of handles exist, including protruding pull bars.

[0006] As depicted in the figure 1 , such a projecting pull bar 12 is in the form of a bar which is fixed to the opening 11 projecting from the surface of an external facing 111 of the opening 11 and this in a plane parallel and distant from it.

[0007] Pull bars of this type give doors a more modern look compared to classic rotating handles.

[0008] However, these pull bars have some drawbacks.

[0009] Because they protrude from the surface of the door leaf, these pull bars extend into the opening when the door is open, forming an angle of approximately 90° with the frame. Consequently, they reduce the space available for a person to pass through the doorway.

[0010] Furthermore, in this position, there is a risk that a person could hit the drawbar when passing through the opening of the sleeper, which could cause injury.

[0011] The presence of such pull bars also poses logistical problems. Stacking multiple doors, each equipped with a pull bar, on pallets is either impossible or severely limits the number of doors that can be stacked on a single pallet, which tends to increase transport costs. To overcome this, the doors are packaged without their pull bars, and the pull bars are delivered separately. This allows for a greater number of doors to be stacked on a pallet, thus optimizing transport. However, the pull bars must be installed on-site, which complicates door assembly and increases installation time.

[0012] Finally, these pull bars can create a risk of leaks. Indeed, attaching them to the door requires drilling holes for fasteners such as screws. These holes are potential sources of water and / or air leaks, which are detrimental to the door's durability and thermal efficiency.

[0013] Another type of pull bar does not pose these problems; these are the integrated pull bars 13.

[0014] As this is represented in figures 2 à 4 The integrated pull bars are housed inside the door leaf 11, between its inner face 112 and outer face 111, so they do not protrude beyond it. These pull bars therefore do not encroach on the opening when the door leaf is open and form an angle of approximately 90° with the frame, thus improving comfort and reducing the risk of injury. They also improve logistics, as doors equipped with such pull bars can be easily stacked on a pallet. Furthermore, the doors are delivered already fitted with these integrated pull bars, which facilitates installation on site. In addition, the integration of these pull bars eliminates the need for through-drilling in the door leaf for fasteners, thus preventing leaks common with doors equipped with protruding pull bars.

[0015] However, these integrated pull bars have some drawbacks.

[0016] The components of these pull bars are made of metallic materials, particularly aluminum alloys. Therefore, the presence of such an integrated pull bar creates thermal bridges that negatively impact energy performance and can lead to condensation on the interior face of the opening, as the pull bar is located on its exterior face.

[0017] Furthermore, the use of metallic materials, sometimes high-grade such as aluminum alloy, to manufacture the components of these pull bars, combined with the implementation of complex production techniques, particularly extrusion, machining, and casting, results in high production costs. Therefore, this type of integrated pull bar is reserved for very high-end doors.

[0018] Finally, the metal production of the constituent elements of these drawbars, particularly via extrusion / machining / casting, negatively impacts the carbon footprint of the finished product.

[0019] Therefore, there is a need to improve all types of drawbars. 3. Objectifs de l'invention

[0020] The invention aims in particular to provide an effective solution to at least some of these different problems.

[0021] In particular, according to at least one embodiment, an objective of the invention is to improve the integrated pull bars.

[0022] In particular, the invention aims, according to at least one embodiment, to provide such a pull bar which reduces or even eliminates thermal bridges.

[0023] Another objective of the invention is, according to at least one embodiment, to provide such a pull bar which is cheap and can be implemented on a wide range of doors, particularly low and mid-range doors.

[0024] Another objective of the invention is, according to at least one embodiment, to provide such a drawbar which is simple in design.

[0025] Another objective of the invention is, according to at least one embodiment, to provide such a pull bar which does not negatively impact the carbon footprint of a joinery element equipped with such a bar.

[0026] Another objective of the invention is, according to at least one embodiment, to provide such a pull bar which allows for great modularity, in particular in that the same pull bar can be integrated into different joinery elements to obtain different aesthetic results. 4. Présentation de l'invention

[0027] These objectives, as well as others that may arise subsequently, are achieved according to the invention by means of a pull bar for a joinery element, said joinery element comprising at least two opposing faces delimiting an internal space, said pull bar comprising: a plate through which an opening passes, said plate being intended to be housed within said internal space of said joinery element, applied against a first of said facings through which at least one opening passes, in such a way that said opening of said plate coincides at least in part with said opening of said facing; a shell comprising a wall delimiting a bearing surface and a cavity, said shell being intended to be housed within said internal space of said joinery element with its bearing surface applied against said plate and said cavity housed in said internal space of said joinery element; said plate partially closing said cavity in such a way that said orifice constitutes an orifice for the insertion of fingers into said cavity and that at least a portion of said plate closing said cavity constitutes a gripping area for said fingers, said plate and / or said shell being made of material(s) having a coefficient of thermal conductivity less than or equal to 300 W / (mK).

[0028] Thus the invention relates to a pull bar intended to be integrated into a joinery element, and consisting of a shell defining a cavity for placing the fingers of a hand and a plate partially closing the cavity and delimiting a gripping area, the plate and / or the shell being made of material(s) having a thermal conductivity coefficient less than or equal to 300 W / (mK).

[0029] This approach makes it possible to provide a very simple design, robust and inexpensive integrated pull bar which is also thermally efficient.

[0030] According to one possible characteristic, said thermal conductivity coefficient is less than or equal to 1 W / (mK).

[0031] This improves the thermal efficiency of the handle by limiting heat loss.

[0032] According to one possible characteristic, the thermal conductivity coefficient of said shell is less than or equal to 1 W / (mK).

[0033] In this case, the mounting plate can have a higher thermal coefficient and be made of a mechanically stronger material such as metal. Thus, the pull rod offers good thermal efficiency thanks to its low thermal conductivity casing and good mechanical strength via the mounting plate.

[0034] According to a possible characteristic, which of the said plate and / or the said casing are made of a material belonging to the group comprising: plastics; wood; minerals; resins; composites.

[0035] According to one possible characteristic, said cavity is intended to be embedded in a cellular insulating material filling said internal space of said joinery element.

[0036] In this case, the shell preferably includes anchoring elements intended to be embedded in said cellular insulation.

[0037] This helps to improve the positioning of the shell within the joinery element.

[0038] According to one possible characteristic, said anchoring elements include at least one band projecting on at least one of the edges of said wall forming said cavity.

[0039] This solution is simple and effective for anchoring the shell in the cellular material.

[0040] According to one possible characteristic, said at least one strip is perforated.

[0041] This allows the cellular material to fit into the perforations and thus further improve the anchoring of the shell in the joinery element.

[0042] According to one possible feature, a pull bar according to the invention includes at least one reinforcement element of said gripping area of ​​said plate.

[0043] This helps to improve the robustness of the pull bar.

[0044] According to one possible variant, said at least one reinforcing element is housed in said cavity and interconnected with said wall of said shell and said gripping area of ​​said plate.

[0045] According to another possible variant, said reinforcing element has an inclined gripping surface oriented towards the inside of said cavity.

[0046] According to another possible variant, said at least one reinforcing element includes at least one connecting block between said shell and said plate

[0047] According to another possible variant, the said reinforcing element is formed within the mass of the said plate.

[0048] All these variations allow for a simple and effective reinforcement of the pull bar.

[0049] According to one possible characteristic, said plate and said shell form a single unit, said plate and said shell forming a hinge allowing said plate to be applied against said bearing surface of said shell.

[0050] This simplifies the manufacturing of the pull bar and facilitates its installation.

[0051] According to one possible characteristic, said shell and said plate are obtained by thermoforming or stamping.

[0052] This helps to reduce manufacturing costs.

[0053] According to one possible characteristic, said hull has a bottom wall opposite said support surface, said bottom wall being at least partly translucent and intended to be applied against or near a second of said facings, said second facing being crossed by an opening closed by said bottom wall of said hull.

[0054] This allows light to pass from one side to the other of a piece of joinery equipped with such a pull bar.

[0055] According to one possible feature, a drawbar according to the invention comprises at least one insulating glazing arranged between said bottom wall of said hull and said second facing, said at least one glazing closing said opening made in said second facing.

[0056] This allows light to pass through while also providing good thermal and, where applicable, sound insulation.

[0057] According to one possible characteristic, the said wall of the said shell is a simple skin.

[0058] According to another possible characteristic, the said wall of the said shell is a double skin.

[0059] This latter case can improve the thermal insulation of the pull bar by placing insulation in the interior space delimited by the double skin.

[0060] The invention also covers a joinery element comprising at least two opposing faces delimiting an internal space, said joinery element comprising at least one pull bar according to any one of the above variants.

[0061] According to one possible characteristic, a first of said facings is crossed by an opening coinciding at least in part with said orifice of said plate, said joinery element comprising at least one reinforcing element of the facing located opposite said first facing in the extension of said pull bar.

[0062] This helps to reinforce the facing located in the extension of the pull bar to prevent it from deforming when the pull bar is handled.

[0063] According to one possible characteristic, said at least one reinforcement element of said facing comprises at least one embossed part formed in said facing opposite said first facing in the extension of said at least one opening of said first facing.

[0064] This allows for a simple and effective reinforcement of the facing.

[0065] According to one possible feature, a facing according to the invention comprises at least one pull bar on at least one of said facings.

[0066] According to one possible characteristic, at least said first facing is traversed by at least two openings, said two openings leading into said cavity of said hull of said drawbar.

[0067] According to one possible characteristic, the said at least two openings have different peripheral contours.

[0068] This allows for great modularity to generate variable joinery aesthetics from the same pull bar. 5. Description des figures

[0069] Other features and advantages of the invention will become apparent from the following description of particular embodiments, given by way of simple illustration and not limitation, and the accompanying drawings, among which: [ Fig 1 ] there figure 1 illustrates a perspective view of an opening fitted with a projecting pull bar according to the prior art; [ Fig 2 ] there figure 2 illustrates a front view of a window or door equipped with an integrated pull bar according to the prior art; Fig 3 ] there figure 3 illustrates a perspective view of a window or door fitted with a projecting pull bar according to the prior art; a detailed perspective view of the window or door. figure 2 ; Fig 4 ] there figure 4 illustrates a partial cross-sectional view along axis AA of the figure 2 ; Fig 5 ] there figure 5 illustrates an exploded perspective view of an opening equipped with an example of a pull bar according to the invention; [ Fig 6 ] there figure 6 illustrates an exploded perspective view of the opening's pull bar figure 5 ; Fig 7 ] there figure 7 illustrates a cross-sectional view of the drawbar of the figure 6 ; Fig 8] [Fig 9 ] ] Fig 10 ] THE figures 8, 9 , 10 respectively illustrate a cross-sectional view and two perspective views of variants of the drawbar of the figure 6 equipped with perforated or non-perforated anchor bars; [ Fig 11] [Fig 12 ] ] Fig 13 ] THE figures 11, 12 , 13 illustrate views of variants of the drawbar of the figure 6 equipped with means of reinforcing the gripping area; [ Fig 14] [Fig 15 ] THE figures 14, 15 illustrate views of variants of the drawbar of the figure 6 partially translucent to allow light to pass through the opening they fit; Fig 16] [Fig 17] [Fig 18 ] THE figures 16, 17, 18 illustrate views of variants of the drawbar of the figure 6 whose shell and base form a single unit; [ Fig 19] [Fig 20 ] ] Fig 21] [Fig 22 ] ] Fig 23 ] THE figures 19, 20 , 21, 22 , 23 illustrate views of a joinery element equipped with a pull bar according to the invention and facing reinforcement means; [ Fig 24 ] ] Fig 25 ] THE figures 24 , 25 illustrate views of a joinery element equipped with a pull bar according to the invention, one face of which is crossed by one or two openings leading into the same cavity of a shell of a pull bar according to the invention. 6. Description de modes de réalisation particuliers

[0070] We present in relation to the figures 5 à 7 an example of a pull bar according to the invention.

[0071] As shown, such a pull bar 2 is intended to be integrated into an internal space 113 delimited by the external facing 111, the internal facing 112, opposite each other, and the frame 114 of the opening 11 of a joinery.

[0072] Such a drawbar 2 comprises a plate 20 and a shell 21.

[0073] The mounting plate 20 is in the form of a plate. It has an opening 200 through it. The mounting plate 20 is designed to be housed inside the internal space 113 of the window or door element, or more precisely, its opening 11, surface-mounted against one of its interior or exterior faces, in this case the exterior face 111 in the illustrated example, although it could also be the interior face. More precisely, the face of the mounting plate 20 facing the face 111 is surface-mounted against the inner face of the face 111 facing the internal space 113. This face 111, against which the mounting plate 20 rests, has at least one opening 1111 through it. The opening 200 of the mounting plate 20 coincides, at least partially, with the opening 1111 in the face 111.

[0074] The peripheral contour of the orifice 200 of the plate 20 may have a rounded edge 2000 raised towards the facing against which the plate 20 is pressed so as to define a housing for the peripheral edge of the opening 1111 of the facing 111, as can be seen in particular on the figure 7 .

[0075] The plate 20 is attached to the facing 111 preferably by bonding, and a seal is created between the plate 20 and the facing 111 preferably by means of at least one gasket. The bonding and sealing functions can be achieved in combination, for example by using a waterproof adhesive.

[0076] The shell 21 includes a wall 210 delimiting a bearing surface 2100 and a cavity 2101.

[0077] This shell 21 is intended to be housed inside the internal space 113 of the joinery element with: its bearing surface 2100 is applied against the plate 20, or more precisely against the surface oriented towards the internal space 113 of the latter, and the cavity 2101 is housed in the internal space 113.

[0078] The hull here has a base 2102 and four sides 2103 that connect the base 2102 to the support surface 2100. The base is here substantially parallel to the support surface, although this might not be the case. The base 2102 may be abutting one of the faces or may be offset from it.

[0079] The casing is a single piece. It can consist of a single wall, as shown in the figures, or a double-skin wall defining an internal space between the two skins that can be filled with insulating material. This can improve the insulating properties of the window or door, particularly when the 2102 back panel is applied against one of the facings of the opening.

[0080] Plate 20 partially closes cavity 2101 in such a way as: that the orifice 200 of the plate 20 constitutes an orifice for the introduction of fingers into the cavity 2101 of the shell 21, and that at least a portion of the plate 20 closing the cavity 2101 constitutes a gripping area 201 for fingers.

[0081] The plate 20 and / or the shell 21 are made of thermally weakly conductive material(s) having a thermal conductivity coefficient less than or equal to 300 W / (mK).

[0082] Preferably, the thermal conductivity coefficient of the shell and / or the plate is less than or equal to 1 W / (mK).

[0083] In this case, the base plate and / or the casing are made of a material belonging to the group comprising: plastics; wood; minerals; resins; composites.

[0084] Preferably, the shell and the plate will be made of a material having a coefficient of thermal conductivity less than or equal to 1 W / (mK).

[0085] However, the mounting plate 20 may be made of a material with a thermal conductivity coefficient greater than 1 W / (mK) to provide it with greater robustness and prevent it and the facing to which it is attached from deforming when a user pulls on the pull bar to move the opening. In this case, the mounting plate may, for example, be made of metal such as steel, aluminum alloy, or another material.

[0086] In another variant, the base plate will be made of a material with a thermal conductivity coefficient less than or equal to 1 W / (mK) and the shell will be made of a material with a thermal conductivity coefficient greater than this value of 1 W / (mK).

[0087] In this case, the casing can be made of metal, such as steel or aluminum alloy or other, and the plate will be made of another material.

[0088] Alternatively, the base plate and casing can also be made of metal, such as steel, aluminum alloy, or another material. This results in a simple yet even more robust pull bar.

[0089] Various manufacturing techniques can be used to produce the metal plate or casing, including: sheet metal work, metal fabrication and welding, stamping, machining, casting, ...

[0090] The interior space 113 of the opening 11 can be filled in whole or in part with at least one sound and / or thermal insulating cellular material.

[0091] In this case, cavity 2101 is intended to be embedded in this or these alveolar insulating material filling the internal space 113.

[0092] This or these cellular materials can be in the form of one or more plates glued to the facings 111, 112 in the internal space 113 or be injected into the internal space 113.

[0093] The shell 21 may include anchoring elements intended to be embedded in the cellular insulating material.

[0094] These anchoring elements improve the stability of the shell and its positioning within the opening. They are particularly effective when the cellular material is injected into the internal space 113.

[0095] In the implementation of figures 8 et 9 , these anchoring elements include at least one anchoring strip 3 projecting on at least one of the sides 2103 of the wall 210 forming the cavity 2101.

[0096] In the illustrated example, two anchoring strips 3 are implemented on two opposite sides 2103 of the wall 210 delimiting the cavity 2101. They extend along the longitudinal axis of the cavity 2101 preferably all along it and form a kind of right angle, one wing 30 of which is attached to the wall (in particular to the portions of the wall 210 constituting sides 2103 of the cavity 2101) and the other wing 31 extends substantially parallel to the bottom 2102 of the cavity 2101, i.e. substantially parallel to the faces 111, 112 and to the bearing surface 2100.

[0097] In the variant illustrated in figures 8 et 9 The anchor strips 3 are solid. In the embodiment of the figure 10 at least one of the anchoring strips 3 is at least partially perforated. In particular, the wing 31 projecting from the periphery of the shell 21 is traversed by a plurality of perforations 310. This implementation is particularly advantageous when the cellular material is injected into the internal space and allows for even greater improvement in the retention of the shell within the opening.

[0098] In variants, the pull bar includes at least one reinforcement element 4 of the gripping area 201 of the plate 20.

[0099] In the modes of embodiment of figures 11 And 13 , at least one reinforcing element is housed in cavity 2101 and interconnected with wall 210 of shell 21 and gripping area 201 of plate 20.

[0100] On the figure 11 , it is interconnected with a side 2103 of the wall 210 of the shell 21 and the gripping area 201 of the plate 20.

[0101] On the figure 13 , it is interconnected with the bottom 2102 of the wall 210 of the shell 21 and the gripping area 201 of the plate 20.

[0102] In the variant of the figure 11 , the reinforcing element 4 has an inclined gripping surface 40 oriented towards the inside of the cavity 2101.

[0103] In the variant of the figure 13 At least one reinforcing element 4 includes a connecting stud 41 between the hull 21 and the plate 20, more precisely between the base 2102 and the gripping area 201. In the illustrated example, two studs 41 are used. However, more than two studs 41 could be used.

[0104] In the variant of the figure 12 , at least one reinforcing element 4 is formed on the face of the plate 20 facing inwards into the cavity 2101 at the gripping area 201 of the plate 20.

[0105] In the variant of figures 17 et 18 , at least one reinforcing element 4 can be formed directly in the mass of the plate 20 and interconnect the plate 20 with the shell 21 or not. In the illustrated example, they are not interconnected with the shell.

[0106] In the variant of figures 16, 17 et 18 , the plate 20 and the shell 21 form a single unit 5, the plate 20 and the shell 21 forming a hinge 50 allowing the plate 20 to be applied against the bearing surface 2100 of the shell 21.

[0107] The shell and / or the plate can be obtained by thermoforming or stamping.

[0108] In the variants of figures 14 et 15 , the hull 21 has a bottom wall 2102 opposite the bearing surface 2100, the bottom wall 2102 being at least partly translucent and intended to come into contact with a second of the facings 112 or near it, this second facing 112 being crossed by an opening 1120 closed by the bottom wall 2102 of the hull 21.

[0109] This variant allows light to pass through the opening.

[0110] In the variant of the figure 14 , the bottom 2102 of the hull 21 is applied against the face facing the internal space 113 of the second facing 112. A seal is made at the junction between the bottom 2102 and the second facing 112.

[0111] In the variant of the figure 15 , a space is provided between the back wall 2102 and the second facing 112 through the opening 1120.

[0112] In this case, the joinery element includes at least one insulating glazing 5 arranged between the bottom wall 2102 of the shell 21 and the second facing 112, at least one glazing 5 closing the opening 1120 made in the second facing 112.

[0113] In the embodiment illustrated in the figure 15 The glazing is secured on one side to the facing 112 and on the other side to the wings 31 of the anchoring strips 3. Alternatively or in addition, the glazing could be secured to the back wall 2102. The anchoring strips 3 do not necessarily have to be used when glazing is installed.

[0114] A seal is made on each side of the glazing with the facing 112 on one side and with the shell 21 and / or its anchoring strips 3 on the other.

[0115] In illustrated variants figures 19 à 23 , the joinery element includes at least one reinforcement element of the facing 112 located opposite the facing 111 crossed by the opening 1111 in the extension of the pull bar 2.

[0116] As shown, at least one reinforcement element includes at least one stamped 6 formed in the facing 112 opposite the facing 111 in the extension of at least one opening 1111 of the facing 111.

[0117] Several types of reinforcement elements can be implemented.

[0118] In the example of figures 19 et 20 The reinforcement is provided by means of two stamped sections made in the facing 112 along the longitudinal axis of the drawbar 2. These stamped sections are parallel and spaced apart, extending along the entire length of the drawbar 2 or beyond, as shown in the diagram. figure 19 where they extend essentially along the entire length of the facing 112. More than two stampings could be implemented.

[0119] In the example of the figure 21 The reinforcement is provided by means of a plurality of indentations made in the facing 112, extending from the pull bar 2. These indentations extend along axes orthogonal to the longitudinal axis of the pull bar 2. They are parallel and spaced apart. They preferentially extend across the entire width of the pull bar. They are also distributed essentially along the entire height of the pull bar. However, their vertical distribution could be greater or less than the height of the pull bar. Similarly, their length could be less than or greater than the width of the pull bar.

[0120] In the implementation of figures 22 And 23 , the reinforcement is achieved by means of a single stamping made on the facing 112 opposite the pull bar 2 on a surface substantially identical to that of the pull bar.

[0121] Thus, the stamping of the facing opposite the pull bar can be longitudinal or transverse, single or multiple, thin or wide...

[0122] This stamping, whatever its shape and number, helps to avoid deformation of the facing located opposite the facing where the pull bar is installed, in particular when insulating material is injected between the shell and the facing located opposite the facing where the pull bar is installed.

[0123] In the embodiment just described, and its variations, the joinery element comprises a single pull bar located on one of the faces of its opening. In variations, the joinery element may include at least one pull bar on at least one of the faces. In other words, the joinery element may include one or more pull bars on one and / or the other of the faces.

[0124] In the embodiment, and its variants, just described, the facing 111 is traversed by a single opening 1111 which leads into the cavity 2101 of the shell 21. This is, for example, shown on the figure 23 .

[0125] In the variant illustrated at the figure 24 , the facing 111 is crossed by two openings 1111 which lead into the cavity 2101 of the hull 21.

[0126] In general, the facing 111 may be traversed by at least two openings 1111 leading into the same cavity 2101 of at least one shell 21. The second 112 facing may also be traversed if at least one drawbar is installed on the side of the second facing.

[0127] When several openings are made in the same facing to lead into the same cavity of a shell, these openings may have different peripheral contours in shape and / or size, as shown in the figure 25.

[0128] The invention covers not only a pull bar but also a joinery element equipped with at least one pull bar. The joinery element belongs to the group comprising: doors; windows with or without opening(s); gates; fences; roller shutters; blinds; pergolas; verandas.

Claims

1. Pull bar (2) for joinery element, said joinery element comprising at least two opposing facings (111, 112) delimiting an internal space (113), said pull bar (2) comprising: - a plate (20) through which an orifice (200) passes, said plate (20) being intended to be housed inside said internal space (113) of said joinery element with its face turned towards a first of said facings (111, 112) applied against the internal face of said first facing (111, 112) turned towards said internal space (113), said first facing (111, 112) being through which at least one opening (1111) passes, in such a way that said orifice (200) of said plate (20) coincides at least in part with said opening (1111) of said first facing (111, 112);- a shell (21) comprising a wall (210) delimiting a bearing surface (2100) and a cavity (2101), said shell (21) being intended to be housed inside said internal space (113) of said joinery element with its bearing surface (2100) applied against the surface of said plate (20) oriented towards said internal space (113) and said cavity (2101) housed in said internal space (113) of said joinery element; said plate (20) partially closing said cavity (2101) in such a way that said orifice (200) constitutes an orifice for the insertion of fingers into said cavity (2101) and that at least a portion of said plate (20) closing said cavity (2101) constitutes a gripping area (201) for said fingers, said plate (20) and / or said shell (21) being made of material(s) having a coefficient of thermal conductivity less than or equal to 300 W / (mK).; 2. Pull bar according to claim 1 wherein said coefficient of thermal conductivity is less than or equal to 1 W / (mK).

3. Pull bar according to claim 1 wherein the coefficient of thermal conductivity of said shell is less than or equal to 1 W / (mK).

4. Drawbar according to claim 2 or 3 in which said plate (20) and / or said shell (21) are made of a material belonging to the group comprising: - plastics; - wood; - minerals; - resins; - composites.

5. Pull bar according to claim 1 in which said plate and / or said shell are made of metallic material.

6. Pull bar according to any one of claims 1 to 5 in which said cavity (2101) is intended to be embedded in a cellular insulating material filling said internal space (113) of said joinery element.

7. Pull bar according to claim 6 in which said shell (21) comprises anchoring elements intended to be embedded in said cellular insulation.

8. Pull bar according to claim 7 in which said anchoring elements comprise at least one anchoring strip (3) projecting on at least one of the sides (2103) of said wall (210) forming said cavity (2101).

9. Pull bar according to claim 8 in which said at least one anchor strip (3) is perforated.

10. Pull bar according to any one of claims 1 to 9 comprising at least one reinforcing element (4) of said gripping area (201) of said plate (20).

11. Pull bar according to claim 10 in which said at least one reinforcing element (4) is housed in said cavity (2101) and interconnected with said wall (210) of said shell (21) and said gripping area (201) of said plate (20).

12. Pull bar according to claim 11 in which said reinforcement element (4) has an inclined gripping surface (40) oriented towards the inside of said cavity (2101).

13. Drawbar according to claim 11 in which said at least one reinforcement element (4) comprises at least one connecting stud (41) between said shell (21) and said plate (21).

14. Drawbar according to claim 10 in which said reinforcing element (4) is formed in the mass of said plate (20).

15. Pull bar according to any one of claims 1 to 14 in which said plate (20) and said shell (21) form a single unit, said plate (20) and said shell (21) forming a hinge (50) allowing said plate (20) to be applied against said bearing surface (2100) of said shell (21).

16. Drawbar according to any one of claims 1 to 15 in which said shell (21) and said plate (20) are obtained by thermoforming or stamping.

17. Pull bar according to any one of claims 1 to 16 in which said hull (21) has a bottom wall (2102) opposite said bearing surface (2100), said bottom wall (2102) being at least partly translucent and intended to be applied against or near a second of said facings (111, 112), said second facing (111, 112) being traversed by an opening (1120) closed by said bottom wall (2102) of said hull (21).

18. Pull bar according to claim 17 comprising at least one insulating glazing (5) disposed between said bottom wall (2102) of said hull (21) and said second facing (111, 112), said at least one glazing (5) closing said opening (1120) made in said second facing (111, 112).

19. Drawbar according to any one of claims 1 to 18 wherein said wall (210) of said shell (21) is a single skin.

20. Drawbar according to any one of claims 1 to 18 wherein said wall (210) of said shell (21) is a double skin.

21. Joinery element comprising at least two opposing facings (111, 112) delimiting an internal space (113), said joinery element comprising at least one pull bar (2) according to any one of claims 1 to 20.

22. Joinery element according to claim 21 in which a first of said facings (111, 112) is traversed by an opening (1111) coinciding at least in part with said orifice (200) of said plate (20), said joinery element comprising at least one reinforcing element of the facing located opposite said first facing (111, 112) in the extension of said pull bar (2).

23. Joinery element according to claim 22 in which said at least one reinforcing element of said facing (111, 112) comprises at least one embossment (6) formed in said facing (111, 112) opposed to said first facing (111, 112) in the extension of said at least one opening (1111) of said first facing (111, 112).

24. Joinery element according to any one of claims 21 to 23, comprising at least one drawbar (2) on at least one of said facings (111, 112).

25. Joinery element according to any one of claims 21 to 24 in which at least said first facing (111, 112) is traversed by at least two openings (1111), said two openings (1111) leading into said cavity (2101) of said shell (21) of said drawbar (2).

26. Joinery element according to claim 25 in which said at least two openings (1111) have different peripheral contours.

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