EP1035292A1 - Finger guard to avoid fingers pinching closing the door - Google Patents

Abstract

The finger guard for a building door has a stop with a lug fixed to the frame at a preset height adjacent to the bolt to stop the door before the end of its closing movement. A second guard has a tube mounted in vertical alignment with the hinges in the gap.

Description

Technical field of the invention

• un premier dispositif de protection agencé pour stopper la porte avant la fin de course de fermeture lorsque la poignée d'actionnement se trouve dans un état inactif,
• et un deuxième dispositif de protection destiné à interdire l'accès à l'interstice postérieur ménagé du côté des charnières entre le cadre et le bord postérieur de la porte.

The invention relates to a mechanical security device for a door, which is pivotally mounted in a frame, and provided with an actuating handle connected by a mechanical transmission link to a bolt, said device being equipped with means to prevent entrapment of fingers when closing the door, and comprising:

• a first protection device arranged to stop the door before the closing limit switch when the actuating handle is in an inactive state,
• and a second protective device intended to prevent access to the rear gap formed on the side of the hinges between the frame and the rear edge of the door.

State of the art

The risk of fingers being trapped between the door and the support frame can work on the closing handle side, and on the hinge side following a voluntary or involuntary slamming of the door without the intervention of the handle.

Known systems for implementing the first protection device causing the door to lock before closing completely, usually use a rubber block supported by a fastening member, in particular a cable or a caliper, or an elastic spring stop. To authorize the normal closing of the door, it is necessary to remove these stop pieces by manual action of release, which is different from the grip action of the handle actuation. to the active state. The door closing operation then requires intervention by both hands of the operator, with the risk of jamming the hand if the manual unlocking action takes place simultaneously or just before arrival Door.

The document FR-A-2745026 describes a security device for a door, comprising a locking member movable from a safety position towards an erasing position under the gripping action of the actuating handle. Such a mechanism is complicated, because it requires an auxiliary mechanical connection, in more of the bolt linkage.

The realization of the second protection device on the hinge side uses a classic way an articulated flap, or a flexible bellows which deforms according to the pivot angle of the door. Such devices are described in the documents FR-A-2620484, 2565622, and 2646460, and have a large bulge in the door open position.

Document DE 8426555 relates to a protective device preventing enclose yourself by making the bolt of the lock abut against the fixed frame. The latching mechanism is inhibited, but such a device does not make it possible to obtain a game avoiding pinching fingers.

Subject of the invention

The object of the invention consists in producing a reliable mechanical safety device, can be easily neutralized with one hand during normal closing of the door, easily adaptable to any type of door, and capable of avoiding the risks of fingers caught between the door and the support frame, both on the side of the closing handle, and on the hinge side following a voluntary breakdown or door involuntary without the intervention of the handle.

• le premier dispositif de protection comporte une butée formée par un plot fixé au cadre à une hauteur prédéterminée voisine de celle du pêne, lequel est susceptible de venir en engagement contre ladite butée dans l'état inactif de la poignée, de manière à laisser subsister un espace suffisant entre la porte et le cadre,
• le deuxième dispositif de protection est doté d'au moins un élément tubulaire monté dans l'interstice postérieur en alignement vertical avec les charnières pour constituer un écran statique non déformable pendant toute la course de déplacement de la porte.

The device according to the invention is characterized in that:

• the first protection device comprises a stop formed by a stud fixed to the frame at a predetermined height close to that of the bolt, which is capable of coming into engagement against said stop in the inactive state of the handle, so as to leave a sufficient space between the door and the frame,
• the second protection device is provided with at least one tubular element mounted in the rear gap in vertical alignment with the hinges to form a non-deformable static screen during the entire travel movement of the door.

One hand is useful for this operation, and there is no need to use a special mechanism to block and unblock the security of the first safety device protection. At the second protection device, the coaxial arrangement of the tubular element with the hinges, avoids any bulging effect during opening the door.

According to a preferred embodiment, the stop has a terminal ramp bevelled, and is advantageously made of semi-rigid plastic material having some elasticity. The inclination of the stop ramp is less pronounced that the inclined face of the bolt, so that the projecting point of the bolt touches in first the ramp, avoiding any rebounding effect in the position of blocking. The front edge of the stop located above the ramp is perpendicular to the fixing axis of the stop on the frame to facilitate installation.

According to another characteristic of the invention, each tubular element of the second protection device has a diameter close to that of each hinge, and is provided with a flat fixing tongue, the assembly being shaped according to a rigid or flexible plastic profile which can be assembled either to the frame or at the door.

Brief description of the drawings

• les figures 1 et 2 sont des vues schématiques du premier dispositif de sécurité respectivement en position d'effacement et en position de butée dans l'état actif et inactif de la poignée d'actionnement ;
• la figure 3 montre une vue de détail à échelle agrandie de la figure 2 représentant la zone de contact du pêne contre la rampe;
• la figure 4 est une vue schématique du deuxième dispositif de sécurité agencé du côté apparent des charnières ;
• la figure 5 montre une vue en coupe selon la ligne 5-5 de la figure 4 lorsque la porte est ouverte ;

Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention given by way of nonlimiting example, and represented in the appended drawings, in which:

• Figures 1 and 2 are schematic views of the first safety device respectively in the erasing position and in the stop position in the active and inactive state of the actuating handle;
• FIG. 3 shows a detail view on an enlarged scale of FIG. 2 showing the zone of contact of the bolt against the ramp;
• Figure 4 is a schematic view of the second safety device arranged on the visible side of the hinges;
• Figure 5 shows a sectional view along line 5-5 of Figure 4 when the door is open;

Description of a preferred embodiment

Referring to Figures 1 to 3, a hinged door 10 is equipped with a first protection device 12 intended to prevent the trapping of the fingers of one hand inadvertently placed in line with frame 14 in the closed area on the side of the operating handle 16.

A mechanical transmission link 18 conventionally connects the handle actuation 16 to the bolt 20, which normally engages in a keeper 22 provided in the fixed frame 14 to immobilize the door in the closed position. This action of completely closing door 10 is only possible if the handle actuator 16 is moved voluntarily to an active state requesting the bolt 20 towards a deleted position (figure 1).

The first protection device 12 comprises a stop 26 fixed to the frame 14 for prevent the complete closing of the door 10 when the bolt 20 is in protrusion in the inactive state of the actuating handle 16. This locking position of the door 10 at the end of the closing stroke is illustrated in FIG. 2, and allows it to remain sufficient space 28 between the vertical front edge 30 of the door 10 and the frame 14 preventing finger trapping. The stop 26 is formed by a stud fixed by a screw in a predetermined location of the frame 14, at a height corresponding to that of the bolt 20 of door 10.

The stop 26 of rectangular section has a terminal ramp 27 cut in bevel, and is advantageously made of semi-rigid plastic material having a certain elasticity upon impact. The inclination of the ramp 27 of the stop 26 is less pronounced than the inclined face of the bolt 20, so that the projecting point of the bolt 20 first touches the ramp 27 (Figure 3). Any rebound effect is thus avoided in the blocking position. The front edge 29 of the stop 26 located above of the ramp 27, is perpendicular to the axis of attachment of the stop 26 on the frame 14.

Any movement of door 10 in the closing direction is automatically stopped when the bolt 20 arrives against the stop 26 in the inactive state of the handle actuation 16. The interval delimited by space 28 is determined by the length of the stop 26 projecting from the frame 14. The door 10 stops a few times centimeters before the end of the closing stroke, avoiding pinching of the fingers between the door 10 and the frame 14 on the side of the actuating handle 16. The complete re-closing of door 10 is only authorized after the passage of the actuating handle 16 to the active state, after a voluntary operation of pivoting causing the bolt 20 to retreat into its housing.

The actuating handle 16 of the door 10 according to Figures 1 to 3 is constituted advantageously by a pivoting lever requiring voluntary maneuver for the transition from the inactive protrusion state to the active erasure state of the bolt 20.

• soit disposé verticalement en les tournant d'un quart de tour vers le haut, évitant tout effet de bras de levier ( cas de la figure 1);
• soit positionné horizontalement d'une manière classique, mais nécessitant le relèvement du levier pour opérer l'effacement du pêne 20.

To prevent the passage of the bolt 20 to the active state, in particular when hooking a child to a crutch handle, it is possible to orient and maneuver the pivoting lever in two different ways:

• is arranged vertically by turning them a quarter of a turn upwards, avoiding any leverage effect (case of Figure 1);
• is positioned horizontally in a conventional manner, but requiring the lever to be raised in order to erase the bolt 20.

To avoid entrapment of the fingers between the frame 14 and the vertical rear edge of hinge support, door 10 is equipped with additional means of protection arranged opposite the actuating handle 16 in the direction longitudinal.

Referring to Figures 4 and 5, a second protection device 40 arranged from visible side of the hinges 42, 44, has tubular elements 46 in the form of elongated profiles. These tubular elements 46 are mounted in vertical alignment with the hinges 42, 44 so as to permanently plug the small gap 45 formed between the frame 14 and the rear edge 48 of the door 10 during pivoting of the latter. Each tubular element 46 has a diameter close to that hinges 42, 44, and is provided with a flat fixing tongue 50 which can be assembled either to frame 14 (case of FIG. 5), or to door 10. The elements tubular 46 are staggered between the hinges 42, 44 over the entire height of the door 10, and are advantageously made of rigid or flexible plastic material. The fitting the fixing tab 50 can be operated by any assembly means, in particular by gluing or nailing.

The pivoting handle 16 can of course be replaced by a rotating strap or any other gripping device.

Claims (7)

Mechanical safety device for a door (10), which is pivotally mounted in a frame (14), and provided with an actuating handle (16) connected by a mechanical connection (18) for transmission to a bolt (20 ), said device being equipped with means to prevent jamming of the fingers when the door (10) is closed, and comprising: a first protection device (12) arranged to stop the door before the end of closing stroke when the actuating handle (16) is in an inactive state, and a second protective device (40) intended to prevent access to the rear gap formed on the side of the hinges (42, 44) between the frame (14) and the rear edge (48) of the door, characterized in that: the first protection device (12) comprises a stop (26) formed by a stud fixed to the frame (14) at a predetermined height close to that of the bolt (20), which is capable of coming into engagement against said stop (26) in the inactive state of the handle (16), so as to leave sufficient space (28) between the door (10) and the frame (14), the second protection device (40) is provided with at least one tubular element (46) mounted in the rear gap in vertical alignment with the hinges (42, 44) to form a non-deformable static screen during the entire travel stroke Door. Mechanical safety device according to claim 1, characterized in that the stop (26) has a terminal ramp (27) cut in a bevel, and is produced advantageously in semi-rigid plastic material having a certain elasticity. Mechanical safety device according to claim 2, characterized in that the inclination of the ramp (27) of the stop (26) is less pronounced than the inclined face of the bolt (20), so that the projecting point of the bolt (20) first touches the ramp (27), avoiding any rebound effect in the blocking position. Mechanical safety device according to claim 3, characterized in that the front edge (29) of the stop (26) located above the ramp (27) is perpendicular to the axis of attachment of the stop (26) on the frame (14) to facilitate the pose. Mechanical safety device according to claim 1, characterized in that each tubular element (46) of the second protection device (40) has a diameter close to that of each hinge (42, 44). Mechanical safety device according to claim 5, characterized in that each tubular element (46) is provided with a flat fixing tab (50) can be assembled either to the frame (14) or to the door (10). Mechanical safety device according to claim 6, characterized in that the tubular element (46) and fixing tab (50) assembly is shaped according to a rigid or flexible plastic profile.

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