ITMI20111442A1 - RELEASE CLOSING SYSTEM FOR AN ACCESS DOOR OF A SECTIONAL DOOR - Google Patents

Description

`` SNAP LOCKING SYSTEM FOR AN ACCESS DOOR OF A SECTIONAL DOORâ €

DESCRIPTION

The present invention relates to a snap closure system for an access door of a sectional door.

Sectional doors, which are especially used for closing garages and similar premises, consist of a plurality of superimposed sections which are mutually articulated along horizontal axes, so that the sectional door, when it is in the lowered condition, lies substantially in a vertical plane that occludes the entrance to the room, when it is in the raised condition it lies substantially in a horizontal plane parallel to the ceiling of the room, and in the passage from one to the other of these conditions it follows a curved trajectory, which is It is made possible by the articulations between the different sections.

These sectional doors, in view of their function, usually have a considerable extension, and it is unnecessarily burdensome to lift the whole sectional door when it is necessary to allow only one or more people to pass through. For this reason, in certain sectional doors a small access door is obtained, designed to be opened to allow the passage of people, without lifting the entire sectional door. However, since the access door must have a height proportionate to the height of the people, it must extend over several sections of the sectional door, and therefore must also be made up of mutually articulated panels, in order to follow the curved trajectory of displacement. of the sectional door.

In most of the known embodiments, the access door is closed, with respect to the sectional door in which it is obtained, by means of an ordinary lock, which allows to lock only one of the panels of the access door with respect to the corresponding section of the sectional door. However, this way of operating results in a serious drawback, because each panel of the access door can be correctly held only on one side of the installation by a vertical joint with respect to the corresponding section of the sectional door, while on the opening side only one panel of the access door is firmly fixed in the closed position by the lock, while all the other panels of the access door are held only by the panel closed with a lock through repeated joints, so that, due to the inevitable play of the joints, the various panels of the access door are not held securely. This makes the access door unwelcome to the user, but at the same time reduces its safety, because the instability of the panels facilitates the forcing of such an access door.

In certain known, more advanced embodiments, the access door is provided with a lock which blocks the panel on which it is installed, as well as an upper bolt and a lower bolt. The mechanisms of these access doors have some drawbacks, and moreover the effectiveness of the closure is not entirely satisfactory.

Furthermore, in some known embodiments the mechanisms of the access door which has been opened are not ready for a simple reclosing of the door without requiring a particular maneuver, ie they allow opening only from the outside of the door.

The Italian patent application No. T02010A000644 in the name of the same applicant, not yet published, describes a closing system for an access door obtained in a sectional door, which solves part of the above problems by allowing the locking of several panels of the access to the corresponding sections of the sectional door.

However, the assembly of this closing system requires long and complex operations to be carried out on the access door, and, in the assembled condition, it has a certain encumbrance on the edge of the door, which makes it unsightly.

Furthermore, this closing system must be prepared for the particular sectional door on which it is to be installed, not allowing adaptability on site according to the dimensions of the door sections and the access door panels.

The purpose of the invention is to eliminate the drawbacks of known systems, ensuring to the access door a stable and resistant closure of all the panels of which it is composed, also ensuring that it, once it has been opened , is ready to be closed without requiring any particular maneuver.

Another purpose of the invention is to provide such a closing system which presents a limited space on the edge of the access door, and therefore is aesthetically pleasing.

Yet another purpose of the invention is to allow adaptability to panels of the access door and sections of the sectional door of different heights.

Yet another object of the invention is to allow the locking system to be mounted indifferently on access doors with right or left opening.

Not the least object of the invention is to provide such a closing system which is simple and economical to make as well as easy to assemble by the user.

These purposes are achieved by the closing system for an access door of a sectional door which has the characteristics listed in the attached independent claim 1.

Advantageous embodiments of the invention are expressed in the dependent claims.

Basically the closing system according to the invention, in which the access door is constituted by a plurality of mutually overlapping panels P articulated according to horizontal axes located in correspondence with the articulation axes of the corresponding sections of the sectional door S, in which each panel P of the access door is articulated according to a vertical axis, from one side of the access door, to a corresponding section of the sectional door, and in which a lock of the closing system is adapted to be mounted on a first access door panel to lock the access door with respect to the sectional door, operationally involves vertical rod segments that can be moved, by the action of the lock, between an open position and a closed position, said rod segments terminating at their distal ends , in the closed position, in correspondence with said articulation axes of the pri mo panel; at least for some other panels of the access door, vertical rod segments are provided, coaxial with said rod segments of the first panel, said vertical rod segments being connected to locking means of the corresponding panel with respect to the corresponding section of the sectional door, rod segments for each panel ending at their ends, in the closed position, in correspondence with said articulation axes of the panel itself, and the vertical rod segments of each panel being aligned with the vertical rod segments of the adjacent panels, so that The set of all the rod segments for the various panels of the access door constitutes a composite rod interrupted at the joints between the panels; said locking means consist of a snap bolt, the containment casing of which is housed in the edge of the access door and comprising an oscillating bolt head in engagement with a stop block positioned on the edge of a section of the sectional door opposite the corresponding panel of the access door, said oscillating bolt head normally being in the locking position and being able to be unlocked by moving the corresponding rod segment of the composite rod by operating the handle of said lock.

Further characteristics of the invention will appear clearer from the detailed description that follows, referring to a purely exemplary and therefore non-limiting embodiment, illustrated in the attached drawings, in which:

figure 1 is a front view in closed condition of a sectional door, in which there is an access door for people;

Figure 2 is a perspective view of a lock and a corresponding composite rod device according to the present invention;

figure 3 is a view of the lock of figure 2 according to a direction perpendicular to the edge of the access door, or parallel to the plane of the same;

Figure 4 is a front view of the gear system that transmits movement from the lock to the composite rod;

Figure 5 illustrates in exploded perspective a segment of composite rod with its containment casing and the locking means present in each panel, as well as a stop block to be applied on the jamb of the sectional door, shown in a different perspective for greater clarity;

Figure 6 illustrates the components of Figure 5 in an assembled condition, without the lid of the containment casing, with the composite rod segment in a first position;

figure 7 is a view like figure 6, with the composite rod element in a second position;

figure 8 is a side profile view taken from the left side of figure 7; figure 9 is a section taken according to the IX-IX plane of figure 7;

Figures 10, 11 and 12, are sections taken according to the plane A-A of Figure 6 or B-B of Figure 7 with some parts in view, illustrating the locking means in different positions with respect to the corresponding stop block provided on the jamb of the sectional door, with which they cooperate;

Figure 13 is a median section of the locking means in the position of Figure 11.

With reference for now to figure 1, the reference S designates a sectional door, of which four sections are represented, and the reference P designates an access door, which is obtained in the four sections represented by the sectional door S, and therefore is in turn made up of four panels. In correspondence with the opening made for the access manure P, the corresponding sections of the sectional door S have frame elements K1, K2, K3 and K4. In correspondence with the frame elements K1 the panels of the access door P are articulated to the corresponding sections of the sectional door S, while in correspondence with the other frame elements K2, K3 and K4 the access door P opens. lock L is applied to a first panel of the access door P to allow the closing and opening of the access door P.

According to the invention, it is desired that the lock closure of the access door P takes place in correspondence with a plurality of the frame elements K3, and preferably in correspondence with all these frame elements.

With reference to figures 2 to 4, the lock L installed on a first panel PI of the access door has an operating member 1 which can be moved horizontally, parallel to the plane of the door, and a gear device D is provided, such as the one represented by way of example in Figure 4, which transforms the horizontal movement of the operating member 1 into a movement in the vertical direction in opposite directions of two rod segments 6. The geared device D exemplified involves a double rack 2, connected to the Operating member 1 of the lock L, and meshing with pinions 3 which in turn mesh with toothed wheels 4 which operate two racks 5 connected to the rod segments 6.

In the closed condition of the lock L, the rod segments 6 of the first panel P1 terminate, at their distal ends, in correspondence with the horizontal joints of the first panel P1 with respect to the other panels of the access door, indicated, for simplicity, again with the reference P. Therefore, in this condition, the presence of the rod segments 6 does not hinder the relative rotation of the panels P, which must be able to take place freely during the displacements of the sectional door S.

For their part, the other panels P of the access door also have vertical rod segments, designated with the same reference 6, coaxial with said rod segments 6 of the first panel, and the rod segments of each panel P they terminate at their ends, in the closing position of the lock L, in correspondence with the articulation axes of the panel P itself, and the vertical rod segments 6 of each panel P are axially aligned with the vertical rod segments 6 of the adjacent panels. In this way, the set of all rod segments 6 of the various panels P of the access door constitutes a composite rod, which is interrupted at the joints between the panels, so as not to hinder relative rotation between the panels P, but to behave like a continuous rod in the lowered condition of the sectional door S.

In the foregoing, for the sake of simplicity, we have generically spoken of shaft segments 6 of the composite shaft. In reality, as will be better explained below, the rod segments 6 are in turn broken down into several elements to simplify the assembly and operation of the closing system according to the invention.

With reference now in particular to the exploded view of figure 5 and to the following figures, the structure and operation of a rod segment 6 and of the relative locking means B are described in more detail.

As shown in figure 5, a segment 6 of the composite rod is split into two parts 60, 60 ', each of which, according to the invention, is in turn broken down into two further elements, which will also be called bolts, 61, 62 and 61 â € ™, 62â € ™, respectively.

These bolts are arranged on a flat base 70, suitably perforated for the purposes described below, closed by a lid 80, also provided with suitable holes.

The bolts 61, 6Î ", which will also be called fixed bolts, are interlocked or by other means constrained to a central plate 90, which has a shaped opening 91, which is arranged in alignment with a corresponding shaped hole 71 provided in the plate base 70, through which the head or latch 54 of the locking means B passes, consisting in particular of a bolt 50, the structure of which will be better explained below.

The movable bolts 62. 62â € ™ are applied to the fixed deadbolts 61, 6Î ", which can slide on them to allow adjustment of the length of the corresponding assembled deadbolt 60, 60â € ™, and therefore an adaptation to panels P of the access of different heights. The bolts 61, 62 and 6 Î ", 62â € ™ remain engaged in the desired position by means of pairs of teeth provided on the respective opposite faces, of which those provided on the fixed bolts 61, 6Î", indicated with the references 63, 63â are barely visible € ™. These elements are locked by means of pairs of screws at 81, which pass through respective slots 82 provided in the lid 80, and a respective longitudinal slot 64, 64â € ™ provided in the movable bolts 62, 62â € ™, to screw into corresponding holes obtained in the fixed deadbolts 61, 6Î ",

In this way, components 61, 62, 61 ', 62' and 90 constitute a single segment of the composite actuation rod of the locking system according to the invention.

The aforesaid components are enclosed between the base 70 and the cover 80 which form a casing which is fixed by screws to the edge of the access door P.

The cover 80 of the casing also has a hole 83 in correspondence with the holes 91 and 71 provided respectively in the plate 90 and in the base 70, for the passage of the bolt head 51.

The movable deadbolts 62, 62â € ™ have the extremity 65, 65â € ™ projecting from the offset containment casing, so as to be arranged on one side of the casing, instead of centrally to it, to be located on the internal side of the edge of the access door in the assembled position, and thus allow an easy opening of the sectional door.

Such a configuration of the bolts 60, 60â € ™ makes the closing reversible, allowing during the installation phase a door mounting with opening to the right or to the left.

Figures 6 to 9 show an enclosure containing the components of figure 5 for a door with opening on the right as shown in figure 1, and arranged in correspondence with one of the panels of the access door P placed below the bearing one. the lock L, or on the same panel P1 carrying the lock L, when the locking means B are arranged below the lock, as shown in the figures.

Figure 6 shows the position of the bolts, i.e. of the composite rod segment in the closed door condition, with the bolt 50 locked, while Figure 7 shows the configuration of the bolts when opening the access door, i.e. with the bolt unlocked, as will be explained further below.

In practice, the condition of closed door of figure 6, or of locked bolt corresponds to the position of the operating members of the lock shown in figure 4. Starting from this position and operating the operating member 1 in the direction of the arrow, to translate the rack 2 in the direction of the arrow. in the same sense, the composite rod segments 6 are moved away from each other as indicated by the arrows. In particular, the lower segment 6 is moved downwards and moves all the other composite rod segments provided in the panels located below the one carrying the lock L in the same direction. Then the bolts shown in figure 6 are moved downwards causing the bolt to be released (figure 7) as better described below.

Naturally the same happens for the composite rod segments, i.e. the bolts arranged in the panels located above the one containing the L-lock, which are moved towards Paltò and function in the same way, in this case the bolts are arranged in an inverted position. than those of figures 6 and 7.

The operation of the locking bolt will now be explained in more detail, also referring to figures 10 to 13.

As can be seen in Figures 10 to 13, the bolt 50 comprises a tubular casing 52 which is inserted into the edge of the access door and encloses the entire mechanism for actuating the bolt. In particular, in the casing 52 there is a slider 53, acting as a real bolt, bearing at the end the head of the bolt or latch 54, mounted oscillating around a pin 55, under the action of a spring 56 (Figure 13), which tends to hold the head 54 in the locking position shown in Figures 1, 1 and 13.

The slider 53 is pushed into a rest position, corresponding to the locking position of the bolt head 54 by a spring 57.

The rest position of the slider 53, that is the locking of the bolt head 54, is ensured by a tooth 41, provided on the slider which engages in a corresponding seat 42 of an L-shaped rocker lever 43, hinged at 44 to the casing 52. A longer arm 45 of the lever 43 extends longitudinally inside the casing 52 to which it is pivoted, while the shorter arm 46 projects laterally from the casing 52.

At the free end of the arm 45 of the lever 43, beyond the fulcrum 44, there is a projection 47 oriented substantially parallel to the short arm 46 of the lever 43, against which a spring 48 acts, able to hold the lever 43 normally in engagement with tooth 41, in the locking position of the bolt.

Please note that the description of lever 43 has been simplified for reasons of clarity. In reality, the lever 43 is double and the short arms 46 are joined together at the free ends, and the tooth 41 is double and consists of a transverse bar which engages in the cavities 42 of the double lever. Likewise, the projection 47 at the end of the arm 45 consists of a bar which joins the ends of the two arms of the double lever.

The protruding arm 46 of the lever 43 is arranged flush with the perforated plate 90 of the bolt, inside the shaped opening 91, which has a wider central element 92, in which the protruding arm 46 of the lever freely accommodates L-shaped 43 (figure 6) and a narrower end section 93, determined by a cam profile 94 provided on one edge of the opening 91, in the upper part of the plate 90 with reference to figures 6 and 7.

A downward translation of the bolt or composite rod segment, and in particular of the perforated plate 90, from the position of Figure 6 to that of Figure 7, causes the cam profile 94 of the shaped hole 91 to slide against the protruding arm 46 of the L-shaped lever 43, causing the return of this arm 46 inside the casing 52, and therefore a tilting of the L-shaped lever 43 which disengages its seat 42 from the projection 41, releasing the bolt 50, and therefore allowing the mobility of the slider 53 in contrast to the action of the spring 57, as shown in figure 12.

The perforated plate 90 is held in the rest position of figure 6 by a spring 95, which acts between said plate and a fixed abutment 59, made integral with the base plate 70 of the casing.

With reference in particular to Figures 10 to 12, the operation of the bolt 50 is illustrated, which cooperates with a corresponding stop block 13 positioned on the door jamb, or on the edge of a section of the sectional door S opposed to the corresponding panel P of the manure access.

The stop block 13 has a housing 12 suitable for receiving the bolt head 54, said housing 12 being delimited on the external opening side of the access manure P by a beveled lug 11, against which the oscillating bolt head 54 abuts in conditions of door closed, or of locked bolt (figure 11). In this locking condition it is not possible to open the access doors P without operating the handle of the lock L. In fact, a possible thrust of the droppings in the opening direction, i.e. displacement of the bolt 50 to the left with respect to the stop block 13 of figure 11 would cause the bolt head 54 to stick against the projection 11, any displacement of the slider 53 being prevented by the engagement of the L-shaped lever 43 with the projection 41.

In order to open the access manure it is necessary to act on the handle of the lock L, from the inside or from the outside of the door, causing the L-shaped lever 43 to return to the casing 52, and therefore to disengage the projection 41, thus freeing the movement of the slider 53 which allows the bolt or latch head 54 to re-enter the casing, when this slides against the projection 11 of the stop block 13 during the door opening phase (figure 12).

The head of the oscillating bolt 54 is designed in such a way as to allow the overhang 11 of the stop block 13 to be overcome when closing the door with the bolt locked, as shown in figure 10. In fact, by approaching the access door to the sectional door S, the bolt head 54, meeting the projection 11, swings around its fulcrum pin 55 in contrast with the return spring 56, until it goes over this projection 11 and arranges itself in the housing 12 of the stop block 13 .

From the foregoing, the advantages of the closing system for access doors of a sectional door according to the invention are evident, the locking means B or bolts 50 of which can be arranged in correspondence with some, or preferably all the panels P of the door , ensuring a safe locking of the door in the closed position.

The closing system according to the invention is easy to install, resulting in a minimum bulk on the edge of the access door, since the casing 52 of each bolt 50 is housed inside the door, from the edge of which it protrudes substantially only the head of the bolt 54, in addition to the casing containing the bolts, consisting of the base 70 and the lid 80 which is strongly flattened.

The breakdown of the deadbolts into fixed and mobile bolts allows for an adjustment of their length and therefore an adaptation to panels of the access door or sections of the sectional door of different heights.

Furthermore, the closure is of the reversible type, being able, during the installation phase, to mount the bolts in an inverted position depending on the right or left opening of the access door.

Furthermore, in the closing phase there is a greater resistance to forcing, in the event of break-in attempts, due to the jamming of the bolt head or latch 54 against the projection 11 of the stop block 13.

Naturally, the invention is not limited to the particular embodiment previously described and illustrated in the annexed drawings, but numerous detailed modifications can be made to it within the reach of the skilled in the art, without thereby departing from the scope of the art. invention itself, defined by the appended claims.

Claims (10)

CLAIMS 1. Closing system for an access manure obtained in a sectional door (S), the manure being constituted by a plurality of panels (P) superimposed reciprocally articulated according to horizontal axes located in correspondence with the articulation axes of the corresponding sections of the sectional door (S), in which each panel (P) of the access door is articulated according to a vertical axis, from a pivot side (K1) of the access door, to a corresponding section of the sectional door, and in which a lock ( L) of the locking system is suitable for being mounted on a first panel (PI) of the access door to lock the access door with respect to the sectional door, characterized by: from the fact that the lock (L) operationally involves vertical rod segments (6) which can be moved, by the action of the lock (L), between an open position and a closed position, said rod segments (6) ending at their ends distal, in the closed position, in correspondence with said articulation axes of the first panel (PI); by the fact that at least for some other panels (P) of the access door, vertical rod segments (6) are provided, coaxial with said rod segments (6) of the first panel (PI), called vertical rod segments (6) being connected to locking means (B) of the corresponding panel with respect to the corresponding section of the sectional door, the rod segments (6) for each panel (P) ending their ends, in the closed position, in correspondence with said articulation axes of the panel itself, and the vertical rod segments (6) of each panel being aligned with the vertical rod segments (6) of the adjacent panels, so that the set of all rod segments (6) for the various panels ( P) of the access door constitutes a composite rod interrupted at the joints between the panels; And by the fact that said locking means (B) consist of a snap bolt (50), whose containment casing (52) is housed in the edge of the access door and comprising an oscillating bolt head (54) in engagement with a stop block (13) positioned on the edge of a section of the sectional door (S) opposed to the corresponding panel (P) of the access door, said oscillating bolt head (54) being normally in the locking position and being able to be released by means of displacement of the corresponding rod segment (6) of the composite rod by operating the handle of said lock (L). Locking system for an access door according to claim 1, wherein said latch (50) comprises a slider (53) to which said oscillating bolt head (54) is pivoted, the slider (53) being pushed into a rest position corresponding to that of locking of the bolt head (54) by a spring (57), locking being ensured by the engagement of said slider (53) with a tilting lever (43) pivoted to said casing (52) of the latch. 3. Closing system for an access door according to claim 2, wherein said oscillating lever (43) has a substantially L-shape, with a longer arm (45) extending longitudinally inside the enclosure (52 ) to which it is hinged, and a shorter arm (46) projecting laterally from the casing (52), when the rocker lever (43) is in engagement with the slider (53), elastic means (48) being provided to keep the rocker lever (43) normally in engagement with the slider (53), said arm (46) of the lever (43) protruding from the casing (52) being engaged by the corresponding segment of composite rod (6) during the ™ lock operation (L): 4. Closing system for an access door according to claim 3, characterized in that said composite rod segment (6) comprises a plate (90) with a shaped opening (91) having a wider portion (92) , in which the protruding arm (46) of the L-shaped rocker lever (43) is freely housed, and a narrower section (93) determined by a cam profile (94) provided on one edge of the opening (91), such that a translation of the plate (90) of the composite rod segment (6) causes the sliding of said cam profile (94) of the shaped hole (91) against said protruding arm (46) of the L-shaped lever (43), causing the retraction of this arm (46) inside the casing (52) with consequent tilting of the L-shaped lever (43), which disengages from the slider (53) by releasing the bolt (50). 5. Closing system for an access manure according to any one of the preceding claims, in which said bolt head (54) is urged by a spring (56) in the locking position and abuts against a lug (11) of said stop block (13) when the access poiline is closed, allowing however the overcoming of this projection (11) when closing the access manure, with the bolt (50) in the locking position. 6. Closing system for an access door according to claim 4 or 5, characterized by the fact that each segment (6) of the composite rod is split into two parts (60), (60â € ™), constrained on one side and on the other, to said perforated plate (90), each of said parts (60), (60â € ™) being in turn broken down into two further elements or bolts (61), (62) and (6P), ( 62â € ™), respectively, which can slide on each other and be fixed in the desired position to adjust the length of the segment (6) of the composite rod according to the height of the relative panel (P) of the access manure or of the corresponding section of the sectional door (S). 7. Closing system for an access door according to claim 6, in which said bolts (61), (62) and (6Î "), (62â € ™), have opposing engagement teeth and are blocked by screws (81 ) which pass through a longitudinal slot (64), (64â € ™) provided in the bolts (62), (62â € ™) and screw into corresponding holes in the bolts (61), (61â € ™). 8. Closing system for the access door according to claim 6 or 7, in which said bolts (61), (62) and (6Î "), (62â € ™), and said perforated plate (90) are housed in a casing consisting of a flat base (70) and a closing lid (80), holes (71) and (83) being respectively provided in said base (70) and in said lid (80) in alignment with the opening ( 91) of the plate (90), for the passage of said bolt head (54). 9. Closing system for an access door according to claim 8, in which the ends (65), (65â € ™) in the bolts (62), (62â € ™), protruding from said containment casing are offset in a way to be placed on one side of the casing, instead of centrally to it, to be located on the inner side of the edge of the access manure in the assembled position, the position of the bolts being able to be reversed during assembly, to make the closure reversible. 10. Closing system for an access manure according to any one of the preceding claims, characterized in that said lock (L) comprises an operating member (1) which can be moved in a horizontal direction, parallel to the plane of the manure, to operate a gear device (D), which transforms said horizontal movement into a vertical direction movement in opposite directions of two composite rod segments (6).