Box for a protective assembly, designed to hold a protective screen, for example a roller shutter curtain

Abstract

The present invention relates to a housing (10) for a protective assembly (E), intended to house a protective screen (P) and designed to be installed in a building opening. The longitudinal edges of at least one pair of longitudinal walls (20, 30, 40) are joined together by a pair of rotating connecting members (50) structured to guide a relative rotational movement of said longitudinal walls (20, 30, 40) between two end-of-travel positions. Said pair of connecting members (50) comprises a first male connecting member (51) and a second female connecting member (52). Figure for the abstract: 6

Description

Title of the invention: Housing for a protective assembly, intended to receive a protective screen, for example a roller shutter curtain Technical field of the invention

[0001] The present invention relates to the technical field of boxes for protective assemblies, intended to receive a protective screen, for example a roller shutter curtain. State of the art

[0002] Protective assemblies, such as roller shutters, are essential devices in buildings to secure and / or block out various types of openings, including bay windows and windows.

[0003] Protective assemblies classically include a protective screen and a box adapted for rolling it up in a retracted configuration.

[0004] In practice, protective boxes must be robust, easy to install and maintain, while ensuring maximum efficiency in terms of safety and sealing.

[0005] Their design generally includes several longitudinal and lateral walls which require mounting systems to ensure structural integrity and reliable operation over time.

[0006] For this purpose, certain chests have longitudinal walls whose longitudinal edges are assembled together by pairs of assembly members, capable of cooperating by removable interlocking.

[0007] In particular, there are rotating assembly members which are structured to guide a relative rotational movement of the longitudinal walls between the assembled / disassembled configuration.

[0008] Such snap-fit ​​mounting systems, without effort or tools, are appreciated for their simplicity and speed of installation.

[0009] However, current solutions do not always manage to guarantee sufficient robustness once assembled, particularly with regard to the ability to remain firmly in place without risk of dislodging.

[0010] Current snap-fit ​​mounting systems can indeed disengage under the effect of vibrations or forces exerted by the wind.

[0011] In addition, current control systems do not always offer effective control of flatness and sealing. Presentation of the invention

[0012] In order to remedy the aforementioned drawback of the prior art, the present invention proposes a box for a protective assembly, intended to receive a protective screen (for example a roller shutter curtain) and intended to equip a building bay.

[0013] The chest comprises a set of walls including two side walls connecting four longitudinal walls, namely two front walls, a top wall and a bottom wall.

[0014] The longitudinal walls have longitudinal edges which are assembled together by pairs of assembly members, capable of cooperating by removable interlocking.

[0015] The longitudinal edges of at least one pair of longitudinal walls are joined together by a pair of rotating joining members which is structured to guide a relative rotational movement of said longitudinal walls, between two end-of-stroke positions:

[0016] - a first end-of-stroke position, in which said assembly members are separable by a translational movement, and

[0017] - a second end-of-stroke position, in which said assembly members are inseparable.

[0018] And, according to the invention, said pair of assembly members comprises:

[0019] - a first male assembly member comprising two front flaps connected by an end flap with a convex curved cross-section,

[0020] wherein an external front flap is connected to said end flap by means of an external shoulder oriented towards said associated longitudinal wall,

[0021] - a second assembly organ, female, in the form of a throat longitudinal having a longitudinal opening, for the translational passage of said first assembly member in said first end-of-stroke position,

[0022] which longitudinal groove has a convex curved portion terminated by an external rib intended to cooperate with said external shoulder when said assembly members are in second end-of-stroke position (locked).

[0023] The invention presented thus proposes a chest which offers several advantages compared to existing solutions.

[0024] One of the main advantages of the invention is its interlocking system, which requires neither significant physical effort nor the use of tools. This feature considerably simplifies the installation process, reducing assembly time. Furthermore, tool-free interlocking minimizes the risk of damage to components during assembly, thereby increasing the durability and reliability of the final product.

[0025] The assembly system of the invention is also designed to allow controlled rotational movement. This feature facilitates the precise alignment of the longitudinal walls, ensuring correct and stable installation.

[0026] The assembly members also provide locking by hooking. This type of locking offers increased safety by preventing accidental dislodgement of the walls, even under the effect of vibrations or wind. Unlike prior art locking systems, the pair of assembly members according to the invention ensures that the components remain securely in place without the need for screws.

[0027] Ensuring optimal flatness and sealing is also important for protective enclosures, particularly to prevent water infiltration and air leaks. The invention offers advanced control of flatness and sealing, which guarantees that the enclosures maintain their structural and functional integrity over the long term.

[0028] Other non-limiting and advantageous features of the product according to the invention, taken individually or in all technically possible combinations, are as follows:

[0029] - an inner front flap is terminated, opposite said end flap, by a convex curved portion defining an interior reservation,

[0030] and said convex curved portion of the longitudinal groove is terminated by an internal rib which is intended to cooperate with said internal reservation when said assembly members are in second end-of-stroke position (locked);

[0031] - said outer front flap is connected to said outer shoulder by via an external reservation intended to receive said external rib when said assembly members are in the second end-of-stroke position;

[0032] - the end flap and the convex curved portion are complementary, advantageously in the form of a circular arc and having the same radius or different radii;

[0033] - the front flaps, which are flat and parallel, define a general plane presenting a angle ranging from 15° to 45°, preferably 30° + / - 10°, and preferably even 30° + / - 5°, with respect to the general plane of said associated longitudinal wall, said general plane extending parallel to the direction of the translational movement;

[0034] - a first front wall comprises an upper longitudinal border cooperating with an edge of the upper wall via said pair of rotating assembly members, and a lower longitudinal edge cooperating with an edge of the lower wall via an elastic deformation assembly couple;

[0035] - a second front wall defines a descent slot, through which said protective screen is intended to pass through, which second front wall has an upper longitudinal border cooperating with a border of the upper wall by means of said pair of rotating assembly members, and a free lower longitudinal border, defining said descent slot;

[0036] - the lower wall comprises at least two walls: a first lower wall, intended to define the descent slot, and a second lower wall, intended to be connected to a first front wall, which lower walls cooperate through said pair of rotating assembly members;

[0037] - said pair of rotating assembly members is structured to guide a relative rotational movement of said longitudinal walls, according to an angular sector of 15° to 45°, preferably of 30° + / - 10°, and preferably again 30° + / - 5°, between said end-of-travel positions.

[0038] The present invention further relates to a protective assembly comprising a box according to the invention, in which is brought a winding shaft cooperating with a protective screen.

[0039] The invention further relates to a method for assembling the longitudinal walls of a chest according to the invention, comprising:

[0040] - a tilting step of two longitudinal walls, for assembly in translation of said assembly parts according to the first end-of-stroke position,

[0041] - a step of maneuvering said longitudinal walls in rotation, from the first end position of stroke towards said second end position of stroke.

[0042] Of course, the various features, variants, and embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. Detailed description of the invention

[0043] In addition, various other features of the invention become apparent from the attached description made with reference to the drawings which illustrate non-limiting embodiments of the invention and where:

[0044] [Fig-1] is a schematic and cross-sectional view of a chest according to the invention, in in which a first frontal wall is deposited;

[0045] [Fig.2] is a partial and enlarged view of [Fig.1], showing an edge of the wall superior which here includes a male assembly organ;

[0046] [Fig.3] is a partial and enlarged view of [Fig.1], showing the border upper longitudinal of the first frontal wall which here includes a female assembly element;

[0047] [Fig.4] still represents the chest according to [Fig.1], in which the border the upper longitudinal of the first frontal wall is brought closer to the edge of the upper wall;

[0048] [Fig.5] still represents the chest according to [Fig.1], in which the first front wall is positioned so that the upper longitudinal edge of this first front wall begins to be assembled on the edge of the upper wall;

[0049] [Fig.6] still represents the chest according to [Fig.1], in which the first wall front is positioned so that the upper longitudinal edge of this first front wall is assembled on the edge of the upper wall, in a first end-of-stroke position, which can be separated;

[0050] [Fig.7] still represents the chest according to [Fig.1], in which the first wall front is pivoted so that the upper longitudinal edge of the first front wall is assembled with the edge of the upper wall, in the second end-of-stroke position, locked;

[0051] [Fig.8] is a schematic and cross-sectional view of a lower wall comprising two walls connected by a pair of rotating assembly elements.

[0052] It should be noted that, in these figures, the structural and / or functional elements common to the different variants may have the same references.

[0053] The present invention thus relates to a box 10 for a protection assembly E, intended to equip a building bay (not shown).

[0054] The term "building opening" advantageously refers to an opening made in a wall of a building, intended to receive a closing element such as a window, a door, or a protective screen like a roller shutter. This opening generally comprises a fixed frame (fixed section), onto which the movable closing elements may be hinged. Protective gear

[0055] The protection assembly E advantageously comprises:

[0056] - a chest 10 according to the invention, described in more detail below, and

[0057] - a winding shaft A, for winding and operating a screen protection P (represented schematically on [Fig.1]).

[0058] As further developed, "protective screen P" advantageously means a mobile structure intended to protect a building opening such as a bay window.

[0059] This protective screen P can be a roller shutter curtain composed of articulated slats, allowing them to be raised or lowered to open or close the opening. The roller shutter curtain thus provides protection against the elements and intrusions, and can also contribute to the thermal and acoustic insulation of the building.

[0060] Generally, such a protective screen P may still consist of a mosquito net or a veil (to adjust the light entering the building). Chest

[0061] The chest 10 comprises a set of walls including two lateral walls (not shown) connecting four longitudinal walls:

[0062] - two front walls 20,

[0063] - an upper wall 30 and

[0064] - a lower wall 40, also called the underside.

[0065] The longitudinal walls are advantageously made of plastic material, for example PVC.

[0066] These longitudinal walls advantageously comprise two frontal skins connected by intermediate partitions.

[0067] The two front walls 20 respectively comprise an upper longitudinal border 211, 221 and a lower longitudinal border 212, 222.

[0068] In particular, the front walls 20 comprise:

[0069] - a first front wall 21, of which an upper longitudinal border 211 and a lower longitudinal border 212 are respectively assembled with the upper wall 30 and the lower wall 40, and

[0070] - a second front wall 22, opposite.

[0071] The upper longitudinal edge 221 of the second front wall 22 is secured with the upper wall 30. And the lower longitudinal edge 222 of this same second front wall 22 advantageously defines a descent slot F, with the lower wall 40, through which the protective screen P is intended to pass.

[0072] The upper wall 30 comprises:

[0073] - a first longitudinal border 301, cooperating with the longitudinal border upper 211 of the first frontal wall 21, and

[0074] - a second longitudinal border 302, cooperating with the longitudinal border upper 221 of the second frontal wall 21.

[0075] And the lower wall 40 comprises:

[0076] - a first longitudinal border 401, cooperating with the longitudinal border lower 212 of the first frontal wall 21, and

[0077] - a second longitudinal border 402, defining the descent slot F with the lower longitudinal border 222 of the second frontal wall 22.

[0078] According to an embodiment described below, a longitudinal wall 20, 30, 40 can be composed by assembling at least two longitudinal walls. For example, as illustrated in [Fig. 8], the lower wall 40 is formed by assembling a first lower wall 41 and a second lower wall 42. Pairs of assembly components

[0079] Generally, the longitudinal edges between at least two longitudinal walls 20, 30, 40, 41, 42 are assembled together by pairs of assembly members 50, capable of cooperating by removable interlocking.

[0080] By "removable interlocking," advantageously means a type of connection between assembly parts that allows them to be assembled and disassembled without the need for tools. This interlocking allows the components to fit firmly into one another to form a stable and secure connection, while being designed so that they can be easily separated by manual force or a simple movement.

[0081] This type of assembly is particularly useful for facilitating maintenance operations and quick adjustments, as it offers the possibility of dismantling and reassembling the longitudinal walls without damaging the parts or requiring specialized effort or equipment.

[0082] In particular, as illustrated by the figures, the longitudinal edges of at least one pair of longitudinal walls 20, 30, 40, 41, 42 are assembled together by a pair of rotating assembly members 50 which is structured to guide a relative rotational movement of said longitudinal walls 20, 30, 40, 41, 42.

[0083] In other words, the longitudinal edges of at least one pair of longitudinal walls 20, 30, 40, 41, 42 are assembled by a pair of rotating assembly members 50 which is designed to guide a relative rotational movement of these longitudinal walls 20, 30, 40, 41, 42.

[0084] This rotational movement is guided between two end-of-stroke positions:

[0085] - a first unlocked end-of-travel position in which the organs The 50 assembly parts can be separated by a translational movement (figures 5 and 6 in particular), and

[0086] - a second locked end-of-travel position, in which the components assembly 50 are inseparable.

[0087] Preferably, the rotational degree of freedom is located at the level of the pair of rotating assembly members 50.

[0088] Preferably, the movement of a longitudinal wall from the first end position (unlocked) to the second end position (locked) corresponds to a pivoting towards the inside of the box (towards the drive shaft A).

[0089] Conversely, during the maneuver from the second end position (locked) to the first end position (unlocked), the longitudinal wall is advantageously maneuvered by pivoting outwards from the box (separation from the drive shaft A).

[0090] In other words, the first end-of-travel position, unlocked, allows the assembly and separation of the corresponding walls, in which the assembly members 50 are dissociable by a translational movement (figures 5 and 6 in particular).

[0091] And in the second end-of-travel position, locked, the assembly members 50 are inseparable (advantageously within the limit of a maximum nominal force, corresponding to an excessive force likely to cause deformation of the assembly members to the point of their separation, in particular with regard to a maximum permissible pressure generated by the wind).

[0092] Preferably, the resistance of the assembly should meet a wind pressure test of at least 1200 Pascals.

[0093] In general, said pair of rotating assembly members 50 is advantageously structured to guide a relative rotational movement of the longitudinal walls 20, 30, 40, along an angular sector of 15° to 45°, preferably of 30° + / - 10°, and preferably again 30° + / - 5°, between said end-of-stroke positions.

[0094] A pair of assembly members 50 is described below, within the framework of the assembly between the first longitudinal border 301 of the upper wall 30 and the upper longitudinal border 211 of the first front wall 21.

[0095] According to the invention, the pair of assembly members 50 comprises:

[0096] - a first male assembly member 51, and

[0097] - a second assembly member 52, female. First assembly unit (male)

[0098] As shown in more detail in [Fig.2], the first male assembly member 51 advantageously comprises two front flaps 511 which are connected:

[0099] - on one side, by means of a free end flap 512, having a curved section convex, and

[0100] - on the other hand, with the corresponding longitudinal wall 20, 30, 40, 41, 42, here the upper wall 30.

[0101] The end flap 512 advantageously has a convex, arc-shaped cross-section.

[0102] Taking into account the orientation of the longitudinal wall 20, 30, 40, the front flaps 511 include in particular:

[0103] - an external front flap 5111, on the side of an external face 304 of the wall longitudinal 20, 30, 40, and

[0104] - an internal front flap 5112, on the side of an internal face 305 of the wall longitudinal 20, 30, 40.

[0105] Preferably, these front flaps 511 are planar and parallel, defining a general plane 511'.

[0106] This general plane 511' advantageously presents an angle B, ranging from 15° to 45°, preferably of 30° + / - 10°, and preferably even 30° + / - 5°, with respect to the general plane 30' of the associated longitudinal wall 30.

[0107] This angle B is advantageously measured at the level of the inner face 305 of this associated longitudinal wall 30.

[0108] This general plane 511' extends advantageously parallel to the direction of translational movement during the association / dissociation of the assembly members 50.

[0109] In addition, the outer front flap 5111 is connected to the end flap 512 via an outer shoulder 515 oriented towards the associated longitudinal wall 30.

[0110] In other words, the outer shoulder 515 extends opposite the associated longitudinal wall 30.

[0111] Preferably, this external shoulder 515 defines an angle ranging from 80 to 100°, preferably 90°, with respect to the general plane 30' of the associated longitudinal wall 30.

[0112] According to a preferred embodiment, said external front flap 5111 is connected to said external shoulder 515 via an external reservation 518.

[0113] This external reservation 518 is intended to receive an external rib 523 of the second assembly member 52, when the assembly members 50 are in the second end-of-stroke position.

[0114] This technical characteristic contributes in particular to the efficiency of the assembly and to the flatness / continuity of the assembled walls.

[0115] Preferably, the inner front flap 5112 is terminated, opposite the end flap 512, by a convex curved portion 516 defining an inner reservation 517 (advantageously forming a longitudinal groove). Second assembly part (female)

[0116] As shown in more detail in [Fig.3], the second female assembly member 52 is in the form of a longitudinal groove 52 having a longitudinal opening 521, for the translational passage of the first assembly member 51 in the first end-of-stroke position.

[0117] Preferably, the dimension of the longitudinal opening 521 corresponds to the thickness dimension of the first assembly member 51, defined by the spacing of the two front flaps 511.

[0118] This longitudinal groove 52 has a convex curved portion 522 (forming its bottom) terminated by an external rib 523 intended to cooperate with the external shoulder 515 when the assembly members 50 are in the second end-of-stroke position (locked).

[0119] The convex curved portion 522 is advantageously complementary with respect to the end flap 512 of the first male assembly member 51.

[0120] Preferably, the rotational degree of freedom is thus defined by the cooperation between:

[0121] - the convex curved portion 522 of the second assembly member 52, and

[0122] - the end flap 512 of the first assembly member 51.

[0123] This degree of rotational freedom advantageously corresponds to the center of the convex curved portion 522 of the second assembly member 52 and of the end flap 512 of the first assembly member 51.

[0124] This convex curved portion 522 advantageously presents a circular arc section, having the same radius, or a different radius, with respect to the radius of the end flap 512 of the first assembly member 51.

[0125] Preferably, the outer rib 523 is oriented perpendicularly to the forces intended to be exerted on the assembly members 50 (in particular the forces generated by the wind), so as to reinforce the resistance of this assembly with respect to these forces.

[0126] Preferably, the convex curved portion 522 of the longitudinal groove 52 is further terminated by an internal rib 524 which is intended to cooperate with the internal reservation 517, when the assembly members 50 are in the second end-of-stroke position (locked). Arrangement of pairs of assembly components

[0127] A first pair of assembly members 50 is illustrated in the figures, for the assembly between the first longitudinal border 301 of the upper wall 30 and the upper longitudinal border 211 of the first front wall 21.

[0128] As developed below, this pair of components 50 can be adapted for assembling other longitudinal edges supported by the walls 20, 30, 40, 41, 42, for example between:

[0129] - two longitudinal walls chosen from the two front walls 20, the wall upper wall 30 and lower wall 40,

[0130] and / or

[0131] - between two walls forming one of these walls (for example the lower wall).

[0132] According to a preferred embodiment, illustrated in Figures 1 to 7, the first front wall 21 has an upper longitudinal border 211 cooperating with the first longitudinal border 301 of the upper wall 30 via the pair of rotating assembly members 50 according to the invention.

[0133] The lower longitudinal border 212 of this first front wall 21 cooperates with the first longitudinal border 401 of the lower wall 40, advantageously through an elastic deformation assembly couple 60, advantageously removable.

[0134] For example, the lower longitudinal border 212 of this first front wall 21 and the first longitudinal border 401 of the lower wall 40 have a groove / rib pair, capable of cooperating by interlocking by elastic deformation by a translational movement.

[0135] The first front wall 21 then advantageously forms an access hatch.

[0136] According to another advantageous feature illustrated in [Fig.7], an upper longitudinal border 221 of the second front wall 22 cooperates with the second longitudinal border 302 of the upper wall 30 via the pair of rotating assembly members 50 according to the invention.

[0137] This assembly facilitates the mounting of the upper wall 30 onto the second front wall 22, during the assembly of the box 10.

[0138] According to yet another advantageous feature illustrated in [Fig.8], the lower wall 40 comprises at least two lower walls:

[0139] - a first lower wall 41, intended to define the descent slot F, and

[0140] - a second lower wall 42, intended to be connected to the first wall frontal 21.

[0141] And these lower walls 41, 42 have longitudinal edges 411, 421 which cooperate through the pair of rotating assembly members 50 according to the invention.

[0142] In this case again, the lower longitudinal border 212 of the first front wall 21 cooperates with a longitudinal border of the second lower wall 42, advantageously through an elastic deformation assembly couple 60, advantageously removable.

[0143] For example, the lower longitudinal border 212 of this first front wall 21 and the longitudinal border of the second lower wall 42 have a groove / rib pair, capable of cooperating by interlocking by elastic deformation.

[0144] Here again, the second lower wall 42 advantageously forms an access hatch.

[0145] Method for assembling longitudinal walls

[0146] In practice, the assembly of the longitudinal walls 20, 30, 40, 41, 42 is carried out in two main stages which are illustrated in figures 1 to 7:

[0147] - a tilting step of two longitudinal walls 20, 30 to be assembled, for the translational assembly of the assembly members 50 according to the first end-of-stroke position ([Fig.6]), then

[0148] - a step of maneuvering the longitudinal walls 20, 30, from the first end position ([Fig.6]) to said second end position ([Fig.7]).

[0149] In particular, the first end-of-travel position is obtained by inclining a longitudinal wall 21 according to the angle B which is defined here by the front flaps 511.

[0150] This longitudinal wall 21 is then moved in translation so that the second assembly member 52 covers and fits onto the first assembly member 51.

[0151] This movement is continued until the convex curved portion 522 comes to rest against the end flap 512 of the first assembly member 51.

[0152] Then, during the rotation maneuvering step, the convex curved portion 522 slides along the end flap 512 of the first assembly member 51.

[0153] This movement is completed when the outer rib 523 of the second assembly member 52 comes to rest against the outer shoulder 515 of the first assembly member 51.

[0154] In parallel, where appropriate, the inner rib 524 of the second assembly member 52 is intended to cooperate with the inner reservation 517 of the first assembly member 51.

[0155] Where applicable, the assembly exhibits optimal strength through the positioning of:

[0156] - the outer rib 523 of the second assembly member 52 within the external reservation 518 of the first assembly element 51, and

[0157] - the inner rib 524 of the second assembly member 52 within the interior reservation 517 of the first assembly unit 51.

[0158] In this case, the first assembly member 51 is advantageously sandwiched between the outer rib 523 and the inner rib 524 of the second assembly member 52.

[0159] The separation of the longitudinal wall is achieved by a reverse movement:

[0160] - a step of maneuvering in rotation of the longitudinal walls 20, 30, from the second end-of-stroke position ([Fig.7]) to the first end-of-stroke position ([Fig.6]), then

[0161] - a translational maneuvering step, so as to dissociate the assembly parts 50.

[0162] This assembly method applies identically to the different pairs of rotating assembly members 50 equipping the box 10.

[0163] Of course, various other modifications can be made to the invention within the scope of the annexed claims.

Claims

1. Demands A box (10) for a protective assembly (E), intended to receive a protective screen (P) and intended to equip a building bay, which box (10) comprises a set of walls having two lateral walls connecting four longitudinal walls (20, 30, 40), namely two front walls (20), an upper wall (30) and a lower wall (40), which longitudinal walls (20, 30, 40) have longitudinal edges which are assembled together by pairs of assembly members (50), capable of cooperating by removable interlocking, which longitudinal edges of at least one pair of longitudinal walls (20, 30, 40) are assembled together by a pair of rotating assembly members (50) which is structured to guide a relative rotational movement of said longitudinal walls (20, 30, 40), between two end-of-travel positions: - a first end-of-stroke position, in which said assembly members (50) can be separated by a translational movement, and - a second end-of-travel position, in which said assembly members (50) are inseparable, characterized in that said pair of assembly members (50) comprises: - a first male assembly member (51), comprising two front flaps (511) connected by an end flap (512) having a convex curved section, in which an external front flap (5111) is connected to said end flap (512) by means of an external shoulder (515) oriented towards said associated longitudinal wall, - a second female assembly member (52), having the form of a longitudinal groove (52) comprising a longitudinal opening (521), for the translational passage of said first assembly member (51) in said first end-of-travel position, which longitudinal groove (52) comprises a convex curved portion (522) terminated by an external rib (523) intended to cooperate with said outer shoulder (515) when said assembly members (50) are in second end-of-stroke position.

2. A box (10) for a protective assembly (E), according to claim 1, characterized in that an inner front flap (5112) is terminated, opposite said end flap (512), by a convex curved portion (522) defining an inner recess (517), and in that said convex curved portion (522) of the longitudinal groove (52) is terminated by an inner rib (524) which is intended to cooperate with said inner recess (517) when said assembly members (50) are in the second end-of-travel position.

3. Box (10) for a protection assembly (E), according to any one of claims 1 or 2, characterized in that said outer front flap (5111) is connected to said outer shoulder (515) by means of an outer recess (518) intended to receive said outer rib (523) when said assembly members (50) are in the second end-of-travel position.

4. A box (10) for a protective assembly (E), according to any one of claims 1 to 3, characterized in that the end flap (512) and the convex curved portion (522) are complementary, advantageously in the form of an arc of a circle and having the same radius or different radii.

5. A box (10) for a protective assembly (E), according to any one of claims 1 to 4, characterized in that the front flaps (511), which are flat and parallel, define a general plane (511') having an angle (B) from 15° to 45°, preferably 30° + / -10°, and preferably 30° + / -5°, with respect to the general plane (511') of said associated longitudinal wall, said general plane (511') extending parallel to the direction of translational movement.

6. A housing (10) for a protective assembly (E), according to any one of claims 1 to 5, characterized in that a first front wall (21) comprises: - an upper longitudinal edge (211) cooperating with an edge of the upper wall (30) by means of said pair of rotating assembly members (50), and - a lower longitudinal border (212) cooperating with a border (401) of the lower wall (40) via an elastic deformation assembly couple (60).

7. A box (10) for a protective assembly (E), according to any one of claims 1 to 6, characterized in that a second front wall (22) defines a descent slot (F), through which said protective screen (P) is intended to travel, which second front wall (22) comprises: - an upper longitudinal edge (221) cooperating with an edge (302) of the upper wall (30) by means of said pair of rotating assembly members (50), and - a free lower longitudinal edge (212), defining said descent slot.

8. A box (10) for a protective assembly (E), according to any one of claims 1 to 7, characterized in that the lower wall (40) comprises at least two walls (41, 42): - a first lower wall (41), intended to define the descent slot, and - a second lower wall (42), intended to be connected to a first front wall (21), which lower walls (41, 42) cooperate through said pair of rotating assembly members (50).

9. A box (10) for a protective assembly (E), according to any one of claims 1 to 8, characterized in that said pair of rotating assembly members (50) is structured to guide a relative rotational movement of said longitudinal walls (20, 30, 40), along an angular sector of 15° to 45°, preferably of 30° + / - 10°, and preferably again 30° + / - 5°, between said end-of-stroke positions.

10. Protective assembly (E) comprising a box (10) according to any one of claims 1 to 9, in which is reported a winding shaft (A) cooperating with a protective screen (P).

11. A method for assembling the longitudinal walls (20, 30, 40) of a chest (10) according to any one of claims 1 to 9, comprising: - a tilting step of two longitudinal walls (20, 30, 40), for the translational assembly of said assembly members (50) according to the first end-of-stroke position, - a rotation maneuvering step of said longitudinal walls (20, 30, 40), from the first end-of-stroke position to said second end-of-stroke position.

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