EP0908588A1 - Automatic locking and unlocking device for a door, in particular a security door and door equipped with such a device - Google Patents

Abstract

The security door lock and release has a remotely controlled electromagnet (32) and a mechanical unit (30) made up of a hook (50) with an open recess (54). The motion of the hook is linked to the movement of the electromagnet. The recess in the hook co-operates with a pin (74) fixed to the corresponding vertical upright of the door frame. The mechanical unit has support for each pin to absorb the vertical forces. The hook is mounted so that it pivots between two extreme positions, one clear of the pin and the other engaging the pin. The hook absorbs the horizontal forces.

Description

The present invention relates to a locking device and unlocking a door, in particular a security door installed in a indoor and outdoor place of sporting event such as a stadium. The invention also relates to the door thus equipped.

We know the problems that can cause movements of crowds, especially when there is general panic. In stadiums by example, spectators are trapped against the gates that surround the sporting grounds by those who descend to the field, without them could escape, which led to disasters.

To overcome this, remote opening grate systems have been developed. Such grids are linked to each other and the opening of one of them also frees the others which can also open. It is the subject of patent FR-A-2,587,057.

The door responsible for locking the others must therefore open properly when necessary, which requires the establishment of means to highly reliable locking and unlocking.

It is even envisaged to multiply the doors with remote opening if although reliability must be great but simplicity also for reasons obvious maintenance.

However, such grids must also play their role when it there is no problem and no danger, that is to prohibit access to the field, especially to the most fervent spectators and supporters.

We have seen that the pressure on the grids exerted by such group viewers leads to very important values expressed in tonnes.

We also noticed that the personnel of these facilities did not have always the certainty of a correct commissioning of the installation so well that several people are necessary to carry out the checks. These interlocks are only put into service when there is a test but they are inactive in the absence of an audience, this for two reasons at least one to check the installation each time it is put into service and the other to allow free circulation between the stands and the field for maintenance.

Another problem to solve also when the doors are open by voluntary triggering in case of danger, the door must opens immediately under the thrust of the spectators but possibly in the absence of this push, to show that the door is well open and invite some of them to head for these doors.

On the other hand, the door must also be retained in its movement opening so that it does not open too easily, at the risk of cause the first spectators to show up, complicating then the evacuation of the following spectators.

We know locking means using elements electromagnetic in the form of suction cups. In such an arrangement, the strong suction cups only lock the door when these suction cups are powered but we understand that if a weakness of the intensity of the current intervenes on the network, the spectators being in support on the door and exerting a strong push will tend to cause the opening of said door, which can also generate movements crowds.

There is still a problem, that of the cost of these devices because the responsible for such sports facilities must anticipate costs installation costs, maintenance costs and above all they seek the most reliable great for the investments thus made.

Also, the present invention provides a device for remote control locking / unlocking, which is very large reliability, even in the event of a weak network current, which is easy maintenance, which allows you to view the right voucher directly on the spot locking operation during commissioning, i.e. during manual closing of the door, which is a compatible cost price with existing products, and which includes a mechanical element of reduction to resist significant thrust forces.

To this end, the locking / unlocking device according to the invention, a door, in particular a security door for stadiums of public demonstrations, comprising a frame and a sealing element positioned between the uprights of this frame, one of the vertical uprights of this frame comprising means pivoting with respect to a force recovery post while the other vertical upright abuts against a closing post, is characterized in that it comprises at least one electromagnetic unit remotely controlled and at least one mechanical unit comprising at least minus a hook with an open housing, connected in movement to this electromagnetic unit, as well as at least one lug, integral with the upright corresponding vertical of the frame, designed to cooperate with the housing open from hook.

More particularly, the mechanical unit comprises support means of each lug, taking up the vertical forces, the hook being mounted swivel to take two extreme positions, one tilted in which the lug is released and a lift in which the lug is locked, the hook taking up the horizontal efforts.

According to a particular arrangement, the support means comprise at minus a square with a horizontal branch on which the lug slides and a vertical branch facing upwards, said bracket being secured on the closing post, the hook being pivotally mounted relative to this square. More particularly, the support means comprise two brackets forming a yoke, between which the hook is pivotally mounted around an axis.

It is further provided according to the preferred embodiment, that the mechanical unit includes a lever secured to the hook, arising to the right of the open accommodation, and carrying at its end a plywood intended to cooperate with the electromagnetic unit, the lever comprising a slope immediately above the open housing of the hook provided to facilitate the cooperation of the lug with said open housing of the hook.

In order to facilitate the installation of the plywood, it is articulated with respect to the lever.

According to a preferred arrangement, the mechanical unit comprises several mechanical units connected by rods, only one of the units mechanical being connected to a single electromagnetic unit.

According to an improvement, the mechanical unit comprises at least one additional bracket, the vertical branch of which faces downwards and an additional lug, provided to cooperate with this bracket so that the door is held above and below between brackets.

The electromagnetic unit includes an electromagnetic suction cup, secured to the closing post, supplied with electrical energy and remotely controlled.

An improvement provides for light means carried by one of the posts to inform of the open or closed state of the door.

The invention also relates to the door equipped with the device, door which includes a low pivot and a high pivot, integral with the return pole for efforts and planned to cooperate with the corresponding vertical upright of the frame, said low pivot comprising means of opening by gravity equipped with means for adjusting the opening angle.

According to improvements, the door includes means for braking of door opening and mechanical means door ajar when the electromagnetic means are inactive.

• figure 1, une vue en élévation d'une porte équipée du dispositif selon la présente invention,
• figure 2, une de détail de l'ensemble du dispositif,
• figure 3A et 3B, les vues de détail d'un des moyens de verrouillage/déverrouillage du dispositif, en position inactive et en position active,
• figure 4, une vue de face, en position active d'un des moyens de verrouillage/déverrouillage,
• figure 5, une vue de moyens complémentaires de maintien en position inactive de la grille,
• figure 6, une vue en coupe verticale du pivot bas de la porte,
• figure 7, une vue en coupe horizontale du pivot bas de la porte,
• figure 8, une vue du pivot haut de la porte.

The present invention is described in detail according to a particular, nonlimiting embodiment, with reference to the appended drawings, the various figures representing:

• FIG. 1, an elevation view of a door equipped with the device according to the present invention,
• FIG. 2, a detail of the entire device,
• FIG. 3A and 3B, the detailed views of one of the locking / unlocking means of the device, in the inactive position and in the active position,
• FIG. 4, a front view, in the active position of one of the locking / unlocking means,
• FIG. 5, a view of additional means for keeping the grid in the inactive position,
• FIG. 6, a view in vertical section of the bottom pivot of the door,
• FIG. 7, a view in horizontal section of the bottom pivot of the door,
• Figure 8, a view of the top pivot of the door.

In Figure 1, there is shown a door 10 made from a frame 12, pivotally mounted around a support post 14 by means of two top 16 and bottom 18 pivots.

Another closing post 20 supports the device according to the invention, this post being connected to the supporting post 14 by a crosspiece 22.

The door further comprises a strong metal mesh 24 stretched between the uprights of the frame 12.

The support post 14 is U-shaped in the embodiment presented as will be visible in Figures 6 and 7.

The closing post 20 is preferably a section with an H section, as in the preferred embodiment shown in Figure 2, the wings 26 being parallel to the plane of the door in the closed position and the core 28 of the H profile is therefore perpendicular to this plane.

The locking / unlocking device comprises at least one mechanical locking / unlocking unit 30 and a electromagnetic locking / unlocking 32 combined with the unit mechanical.

In Figure 2, there is also shown a connecting rod 34 between the two mechanical units 30.

Figures 3A and 3B show the details of each of the units. mechanical 30 and electromagnetic 32.

We refer to it indifferently for the following description.

The mechanical unit comprises a yoke 36, comprising two brackets 38 with a horizontal branch 40 and a vertical branch towards the top 42.

The horizontal branch has a particular profile in the sense that the end 44 is rounded to facilitate the locking position as indicated further in the description.

This yoke is fixed to the core 28 of the post in a strong manner by screwing or welding.

A bearing 46 is mounted transversely to the yoke with an axis 48.

On this axis 48, a hook 50 is mounted to rotate freely relative to the yoke, this hook being disposed between the two brackets 38 forming said screed.

This hook includes a free end 52 rounded to facilitate the locking as will be explained in the description which follows and a concave open housing 54 for locking.

This hook 50 is integral with a lever 56 for reduction comprising two plates 58 with a spacer 60.

This lever is connected at the bottom to the hook by any suitable means as a weld and in line with this junction, the plates 58 have a profile particular with a slope 62 which is an extension of the housing 54 open from hook.

An articulated head 64 is integral with this reduction lever or more precisely a spacer 65 integral with the plates 58.

The sphere 66 of the head is integral with the lever and the axis 68 perpendicular to the spacer 65 carries a counterplate 70.

This counterplate 70 is thus articulated relative to the lever 56.

The electromagnetic locking / unlocking unit includes a magnetic suction cup 72, of known type, supplied with electrical energy by the general electrical network and controlled by the remote control circuit centralized in a central station.

In the embodiment shown, the suction cup, when it is powered by electrical energy develops traction resistant to a few hundreds of kilograms.

The suction cup is secured to the closing post, plus particularly to wing 26 of the H-profile.

The device comprises in known manner lugs 74, of strong dimension, integral with the frame 12 of the door and designed to cooperate with mechanical locking / unlocking unit. Such pins include a cylinder of mechanically and wear-resistant material and preferably self-lubricated, a material sold under the trade name "ERTALON" is likely to give satisfaction.

Such pins have their axis of revolution oriented parallel to the axis of rotation 48 of the bearing 46.

The operation of the mechanical locking / unlocking units and electromagnetic is simple since it suffices to supply the suction cup 72 with electric power and push the door manually. Indeed, ergot 74 abuts against the end 44 of the brackets 38 of the yoke 36, which by its rounded shape facilitates the sliding of the lug.

This pin slides on the horizontal branches 40 of the brackets until meet the gear lever 56, more precisely the slope 62 and pushes this lever 56, which has the direct consequence of the pivoting of the hook 50 around the axis 48.

The open housing 54 of the hook cooperates with the lug 74.

The reduction lever 56 also pivots until the plywood is close enough to the suction cup 72 and comes press against it, attracted by the electromagnetic forces generated.

We see that the lug is supported by the yoke and its two brackets while the hook prohibits turning back, therefore opening the door.

As soon as the power supply to the suction cup is cut, the hook tilt the lever under its own weight and release the door when it opens.

Note that even if the door is pushed simultaneously when the power supply is cut, the shape of the open housing of the hook allows an opening, the possible push going in the same sense so that opening security is total.

For the second mechanical unit, the hook is commanded by the beautiful 34 and it rises synchronously with the first.

This allows to get rid of a second suction cup while having a double locking / unlocking point.

We also notice that the power of the suction cup is reduced since it only has a role of holding the hook in position with an arm multiplier and it does not take over all efforts directly exercised.

We can thus reduce the power required and the number of suction cups, which reduces the risk of breakdown, costs, the number of power and control points, maintenance while maintaining the multi-point locking / unlocking.

The dissociation of the roles and actions of each of the organs of the device allows everyone to be adequately sized.

Improvements have also been provided such as a guide 76 in upper part.

This guide is a bracket 78 similar to the brackets 38, fixed identically on the closing post and the door frame is fitted an additional lug 80, similar to lugs 74.

The square is on the other hand oriented with its vertical branch 82 towards the low.

Thus, the door is perfectly guided between the different brackets 38 and 78, which ensures that the hooks do not have to bear any effort, but only to retain the lugs.

In the same way, so as to allow control of the good locking / unlocking operation, a set of two light-emitting diodes which light up one hides the plywood is away from the suction cup while the other is turned off while it is the reverse when the plywood is pressed against the suction cup electromagnetic, allowing the person who closes the door to know when closing but also at any time that the door is closed properly and locked.

In Figure 5, there is shown a particular position of the device according to the invention, in which the reduction lever and the plywood are far enough away from the suction cup that even if not suction cup feed, hook holds lugs only to keep the door ajar.

It is necessary to provide an additional accessory in the form a latch 84.

In FIGS. 6 and 7, a low pivot is provided, comprising a base 90, a U-shaped section 92, the corresponding upright 93 of the frame 12 coming to pivot on an axis 94 integral with the base, a tubular support 96 secured to a plate 98 pivotally mounted about the axis 94.

A ring 100, made of anti-friction material, is interposed between the frame and the amount of the frame.

In order to allow the door to open automatically for a few degrees when the plywood is released by cutting off the power supply electric, there is disposed a known means which comprises an axis 102, integral the amount 93 of the frame 12 which bears on the end of the support tubular 96, cut with a given slope.

As can be seen in Figure 7, the plate is adjustable angularly thanks to a light 104, so as to modify the angle opening hours.

The high pivot is shown in FIG. 8, it includes an axis 106, welded to a plate 108, itself welded to the section 92.

A ring 110 centers the profile 93 of the frame 12.

One can also provide a useful improvement in the form a hydraulic door closing retarder commonly called "groom" who is arranged with reverse operation, namely that he slows down the opening of the door during an opening trigger which prevents the first people likely to rush on the door are slightly braked and can even take light support without that the door is erased too suddenly at the risk of causing their fall.

Claims (14)

Locking / unlocking device for a door (10), in particular for stadiums of public demonstrations, including a frame (12) and a sealing element (24) positioned between the uprights of this frame, one of the vertical uprights of this frame comprising means for pivoting relative to a post (14) for taking up the forces while the other vertical upright abuts against a closing post (20), characterized in that it comprises at least one electromagnetic unit (32) remotely controlled and at least one mechanical unit (30) comprising at least at least one hook (50) with an open housing (54), connected in movement to this electromagnetic unit, as well as at least one lug (74), fixed to the corresponding vertical upright of the frame, designed to cooperate with the open hook housing. Locking / unlocking device according to claim 1, characterized in that the mechanical unit (30) comprises means support (36) of each lug, taking up the vertical forces, the hook (50) being pivotally mounted to take two extreme positions, one tilted in which the lug (74) is released and a lift in which the lug is blocked, the hook taking up the horizontal forces. Locking / unlocking device according to claim 2, characterized in that the support means comprise at least one bracket (38) with a horizontal branch (40) on which the lug slides and a vertical branch (42) oriented upwards, said bracket being secured on the closing post (20), the hook being pivotally mounted relative to this square. Locking / unlocking device according to claim 3, characterized in that the support means comprise two brackets (38) forming a yoke (36), between which the hook is pivotally mounted around a axis (48). Locking / unlocking device according to any one of previous claims, characterized in that the mechanical unit (30) includes a lever (56) integral with the hook (50), originating at right of the open housing (54), and carrying at its end a plywood (70) designed to cooperate with the electromagnetic unit (32). Locking / unlocking device according to claim 5, characterized in that the lever (56) includes a slope (62) immediately above the open housing of the hook provided to facilitate cooperation of the lug with said open housing of the hook. Locking / unlocking device according to claim 5 or 6, characterized in that the counterplate (70) comprises a joint (64) by report to sunrise. Locking / unlocking device according to any one of previous claims, characterized in that it comprises several units mechanical (30) connected by connecting rods (34), only one of the units mechanical being connected to a single electromagnetic unit (32). Locking / unlocking device according to any one of previous claims, characterized in that the mechanical unit (30) comprises at least one additional square (78), the branch (82) of which vertical is oriented downwards and an additional lug (80), provided for cooperate with this bracket so that the door (10) is held at the top and below between brackets. Locking / unlocking device according to any one of previous claims, characterized in that the electromagnetic unit comprises an electromagnetic suction cup (72), integral with the post (20) of closing, supplied with electrical energy and remotely controlled. Device according to any one of the preceding claims, characterized in that light means are carried by one of the posts to inform about the open or closed state of the door. Door fitted with the device according to any one of previous claims, characterized in that it comprises a low pivot and a high pivot, integral with the force recovery post and provided for cooperate with the corresponding vertical upright of the frame, said bottom pivot comprising gravity opening means (96.102) equipped with means adjusting the opening angle (98). Door according to claim 12, characterized in that it comprises means for braking the opening of the door. Door according to claim 12 or 13, characterized in that it comprises mechanical means (84) for opening the door when the electromagnetic means are inactive.

Images