EP1225295B1 - Anti-shear security device for automatic doors - Google Patents

Abstract

The up and over door comprises a shutter articulated on an operating arm (3) activated by motors. The safety device comprises contacts (8,9) connected to the operating arm which are able to interrupt the operation of the motors when an obstacle is placed in the shearing plane located between the shutter and the operating arm.

Description

The present invention relates to a safety device for doors automatic, including automatic tilting doors having an apron hinged on at least one arm telescopic maneuver, said safety device being to eliminate the risks of shearing during the operation of such doors.

Document FR-A-2,615,896 describes an automatic door having the features of the preamble of claim 1.

The architecture of a tilting type automatic door is such that it leads to the presence of a number of dangerous areas likely to generate accidents during its operation. More particularly, shear zones are observable at the level of different moving parts.

Generally, tilting automatic doors consist of a door panel, or apron, two opposite edges of which are suitable for move in two pairs of vertical and horizontal rails.

The apron is then hinged to the fixed posts of the door automatic via one or more operating arms, possibly telescopic.

When opening or closing the automatic door, the apron is animated by a complex movement of translation and relative rotation relative to the vertical and horizontal rails, as well as to operating arm.

Shear zones appear at various points on the door automatic, and especially between the apron and the horizontal rails and vertical and between the deck and the maneuvering arm (s).

Users should be protected from these shear zones which can be dangerous when operating the door automatic.

We know a device likely to hide these shear zones through sheet metal plates arranged on the deck and / or on the operating arm to conceal the shear zones.

However, such a device is expensive, unattractive, cumbersome, and especially greatly increases the weight of the apron and parts in movement, which is detrimental to the proper functioning of a door tilting automatic.

In this context, the present invention overcomes the disadvantages of art previous by proposing a safety device for automatic door comprising an apron hinged on at least one operating arm telescopic, said safety device being inexpensive, easy to set up even on existing doors, and reduced weight so as not to interfere with the operation of the door tilting automatic.

For this purpose, according to the invention, it is proposed an automatic door type tilting, having an apron articulated on at least one arm of telescopic maneuver operated by motor means themselves operated by control means, the door being articulated on two pairs of rails, characterized in that said door has a safety device and in that the safety device comprises contact means associated with said at least one telescopic operating arm and able to interrupt the motor means when an obstacle is placed in the shear plane located between the apron and said at least one arm of telescopic maneuver.

Advantageously, the safety device is deformable so as to have at least one degree of freedom in the perpendicular direction at the shear plane.

In order to guarantee the best efficiency, the means of contact are arranged on at least a part of the length of the telescopic operating arm, substantially at the shear plane.

According to a preferred embodiment, the contact means are associated with a support sheath disposed on the telescopic operating arm.

According to a first embodiment, the contact means are arranged on the outer face of the wall of the support sheath.

According to another embodiment, the contact means are arranged between the telescopic operating arm and the inner face of the sheath wall support.

Advantageously, the support sheath is substantially shaped complementary to that of the telescopic arm and is associated with Removable way to the telescopic arm.

According to a particular embodiment, the contact means include contact areas whose approximation leads to the shutdown motor means, said contact zones being capable of driving electricity.

• la figure 1 est une vue schématique de côté d'une porte automatique basculante ;
• la figure 2 est une vue en perspective d'un bras télescopique susceptible d'équiper une porte basculante telle que celle illustrée à la figure 1 ;
• la figure 3 est une vue en perspective d'un bras télescopique de manoeuvre équipé d'une première forme de réalisation du dispositif de sécurité selon l'invention ;
• la figure 6 est une vue schématique de dessus de la forme de réalisation du dispositif de sécurité de la figure 3a ;
• les figures 4 et 5 sont des vues schématiques respectivement en coupe et en perspective d'un détail du dispositif de sécurité selon l'invention ;
• la figure 7 est une vue en perspective d'une seconde forme de réalisation du dispositif de sécurité selon l'invention ;
• la figure 8 est une vue partielle de dessus de la forme de réalisation du dispositif de sécurité représentée à la figure 5 ;
• la figure 9 est une vue en perspective d'une troisième forme de réalisation du dispositif de sécurité selon l'invention.

The present invention will be better understood in the light of the description which follows, referring to an exemplary embodiment but in no way limiting, with reference to the accompanying drawings in which:

• Figure 1 is a schematic side view of a tilting automatic door;
• Figure 2 is a perspective view of a telescopic arm capable of equipping a door such as that illustrated in Figure 1;
• Figure 3 is a perspective view of a telescopic operating arm equipped with a first embodiment of the safety device according to the invention;
• Figure 6 is a schematic top view of the embodiment of the security device of Figure 3a;
• Figures 4 and 5 are schematic views respectively in section and in perspective of a detail of the safety device according to the invention;
• Figure 7 is a perspective view of a second embodiment of the security device according to the invention;
• Figure 8 is a partial top view of the embodiment of the safety device shown in Figure 5;
• Figure 9 is a perspective view of a third embodiment of the security device according to the invention.

Figure 1 is a schematic side view of an automatic door tilting 1 having a substantially quadrangular apron 2 hinged on two telescopic operating arms 3 and 4 (only the arm 3 being visible in the figure 1).

The apron 2 is able to slide in a double pair of parallel rails horizontal 5a, 5b and vertical 6a, 6b, via the ends upper edges 2a and lower 2b of said apron 2.

In order to allow the deck 2 to tilt, one of the ends of each of the operating arms (3, 4) is rotatably mounted around a secondary axis X2 on respectively one of the lateral edges of the deck 2. The opposite end of the maneuvering arms (3, 4) is, for its part, rotatably mounted around a primary axis X1 on respectively the pillars 7a and 7b supporting the entire automatic tilting door 1, and in particular the two pairs of horizontal rails 4a, 4b and vertical 5a, 5b.

Control means, known in themselves and not shown, are provided for actuating the operating arms (3, 4) by intermediary motor means, also known in themselves and not shown for the sake of clarity, and associated for example with operating arm (3, 4) at the primary axis X1.

The control means may consist, for example, of a electronic card capable of managing all the cycles of opening and closing the automatic tilting door 1.

As illustrated in Figure 1, the architecture of an automatic door type tipping causes the appearance of a number of zones of shearing that can be dangerous during operation of said automatic tilting door.

In particular, some shear zones appear between the arms maneuver (3, 4) and the apron 2 during its rotation about the axis X1. The shear zones are identified in Figure 1 by sectors angles marked by double arrows.

FIG. 2 is a schematic perspective view of one of the arms of telescopic maneuver (3, 4) capable of equipping the overhead door automatic 1 illustrated in Figure 1.

The operating arm 3 comprises two telescopic tubes 3a and 3b of substantially quadrangular section. The inner tube 3b is shaped substantially complementary to that of the outer tube 3a in which it slides.

One end of the telescopic arm 3 (corresponding to one of the ends of the outer tube 3a) carries the primary axis X1 to which are connected the motor means capable of actuating the tilting of the deck 2. The primary axis X1 can also be connected to a device of compensation, known in itself and not shown, intended to balance the automatic tilting door 1 during its rotational movement.

The opposite end of the operating arm 3 (corresponding to one of the ends of the inner tube 3b) carries the secondary axis X2 on which is rotatably mounted the apron 2 of the automatic tilting door 1.

The primary axes X1 and secondary X2 are both in parallel directions but are oriented in opposite directions vis-à-vis the operating arm 3.

FIG. 3 is a perspective representation of a telescopic arm 3, such as that illustrated in FIG. 2, and equipped with a device anti-shear security according to the invention.

Said safety device comprises contact means in the form of contact tube 8 and 9, the details of which are given in FIGS. 4 and 5.

FIG. 4 is a sectional view of the contact tube 8 which comprises known manner, a substantially tubular deformable casing 10, made for example of flexible rubber.

Said tubular casing 10 comprises, on at least part of its outer surface, fixing means 11, for example removable, such only double-sided adhesive tape.

The inner surface of the deformable envelope 10 is upholstered on two zones running along two generatrices substantially diametrically opposed, of a conductive material (12, 12 ') each enclosing a electric cable (13, 13 ').

In the state of rest, without external stress, the conductive zones (12, 12 ') are not in contact, the current flowing normally along the electric cables (13, 13 ').

FIG. 5 illustrates the contact tube 8 subjected to an external action symbolized by the arrow f.

Under the effect of the force exerted on its outer surface, the envelope 10 deforms bringing closer and bringing into contact the conductive zones (12, 12 '), having the effect of creating a short circuit.
Referring again to Figure 3, the contact tubes (8, 9) are arranged on at least the entire length of the telescopic operating arm 3, on the side walls adjacent to those carrying the primary axes X1 and secondary X2.

The contact tubes (8, 9) are attached to the telescopic arm of maneuver 3 by any known method, and in particular by via fastening means, removable or not, such as a clip, a double-sided adhesive tape, or any other known means.

In addition, a support sheath 14, of quadrangular shape substantially complementary to that of the telescopic operating arm 3, covers said telescopic operating arm 3 and the contact tubes (8, 9), and is held in position by means of the fastening means 11 arranged on the contact tubes 8 and 9.

The support sheath 14 has two notches 14a, 14b (only the notch 14a being visible in Figure 3) shaped substantially U-shaped and located on opposite walls of the support sheath 14, at the level of primary axes X1 and secondary axes X2.

The side walls (14c, 14d) of the support sheath 14 define the planes where shears due to rotation movements around the primary axes X1 and secondary X2.

The assembly consisting of contact tubes (8, 9) fixed to the support sheath 14 has at least one degree of freedom in translation in one direction perpendicular to the side walls (14c, 14d) of the support sheath 14, that is to say in a direction substantially perpendicular to the planes of shear.

The contact tubes (8, 9) are electrically arranged in series and at this point end, are electrically connected to each other at one of their ends. In Indeed, the electric cables (13, 13 ') are coupled at their level. end near the secondary axis X2.

At the opposite end of the contact tube 8, the electric cables (13, 13 ') are connected to an electronic component 15 ensuring the circulation of the current such as a diode or a resistor.

The corresponding end of the contact tube 9 is connected, via electric cables (13, 13 '), to an electronic circuit 16, known in itself and translating the information received from the contact tubes 8 and 9.

Once translated, the said information is sent to the means of control actuating the motor means of the overhead door automatic 1.

FIG. 6 is a partial view from above of the device of FIG. 3 when a force F is exerted on one of the side walls 14c or 14d of the support sheath 14. Such a force F can be generated by example, by the interposition of an object between the maneuvering arm 3 and the apron 2 in rotation.

Due to the effort F and thanks to the degree of freedom of the whole, the tubes contacts (8, 9) deform and the contact areas (12, 12 ') of the tube contact 9 touch each other, resulting in a modification of the electrical state of the circuit. This modification is processed by the electronic circuit 16 which sends information to the control means that stop the movement of the door.

Fig. 7 is a perspective view of a second embodiment of the safety device according to the invention.

According to this embodiment, the support sheath 14 is directly in contact with the telescopic maneuvering arm. internal faces of the side walls (14c, 14d) of the support sheath 14 are associated with the outer tube 3a of the telescopic operating arm 3, according to all known methods such as clips, screws, double-sided adhesives.

The contact tubes 8 and 9 are arranged, via the means 11, on the outer face of the side walls (14c, 14d) of the support sleeve 14.

The electric cables (13, 13 ') are, in turn, connected to the component electronics 15 and the electronic circuit 16 in the same way as for the embodiment illustrated in FIG.

Figure 8 is a schematic top view of the embodiment illustrated in Figure 7.

When a force F is exerted on one of the contact tubes 8 or 9, the zones conductive material (12, 12 ') comes into contact, which has the effect of stop the rotational movement of the automatic tilting door 1.

By directly associating the contact tubes (8, 9) with the external faces of the side walls (14c, 14d) of the support sheath 14, the safety device of the invention can thus be easily arranged on a telescopic arm existing.

Figure 9 is a perspective representation of a third form of embodiment of the device according to the invention.

In this embodiment, the contact tubes 8 and 9 are associated directly on the telescopic arm 3 via fastening means 11, without support sheath 14.

More specifically, said contact tubes (8, 9) are directly attached to the side walls of the outer tube 3a.

Due to the relative movement between the outer tubes 3a and inner 3b, the side walls of the outer tube 3a are extended to support the contact tubes (8, 9) along the entire length of the operating arm telescopic 3.

In addition, the outer tube 3a has a notch 17 in the shape of a U inverted, intended to allow the sliding of the inner tube 3b on all the travel required to tilt the automatic door 1.

Thus, as previously seen, any effort exerted on one of the contact tubes 8 or 9 causes a modification of the electrical state of the circuit stopping the tilting movement of the apron 2 of the door automatic 1.

The invention thus makes it possible to protect the users against the possible shear zones, by proposing a simple safety device, economical, and adaptable to existing overhead doors.

Claims (10)

1. Automatic door (1) of pivoting type, comprising a closing body (2), articulated on at least one telescopic manoeuvring arm (3) of the automatic door actuated by drive means themselves actuated by control means, said door (1) being adapted to slide on two pairs of rails (5a, 5b, 6a, 6b), characterized in that said door presents a security device and in that said security device comprises contact means (8, 9) associated with said at least one telescopic manoeuvring arm (3) and adapted to interrupt functioning of the drive means when an obstacle is placed in the plane of shear located between the closing body (2) and said at least one telescopic manoeuvring arm (3).
2. Automatic door according to Claim 1, characterized in that said security device is deformable, so as to present at least one degree of freedom in a direction perpendicular to the plane of shear.
3. Automatic door according to one of the preceding Claims, characterized in that the contact means (8, 9) are disposed over at least a part of the length of the telescopic manoeuvring arm (3), substantially at the level of the plane of shear.
4. Automatic door according to one of the preceding Claims, characterized in that said contact means (8, 9) are associated with a support casing (14) disposed on the telescopic manoeuvring arm (3).
5. Automatic door according to Claim 4, characterized in that said contact means (8, 9) are disposed on the outer face of the wall of the support casing (14).
6. Automatic door according to Claim 4, characterized in that said contact means (8, 9) are disposed between the telescopic manoeuvring arm (3) and the inner face of the wall of the support casing (14).
7. Automatic door according to one of Claims 4 to 6, characterized in that the shape of said support casing (14) is substantially complementary of that of the telescopic manoeuvring arm (3).
8. Automatic door according to one of Claims 4 to 7, characterized in that said support casing (14) of the contact means (8, 9) is removably associated with the telescopic manoeuvring arm (3).
9. Automatic door according to one of Claims 2 to 8, characterized in that said contact means (8, 9) comprise contact zones (12, 12') whose bringing closer causes stoppage of the drive means.
10. Automatic door according to the preceding Claim, characterized in that the contact zones (12, 12') are adapted to conduct electricity.

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