ES2278860T3 - OPENINGS ACCORDING TO THE PRINCIPLE OF CURRENT IN REST. - Google Patents

Abstract

Door opener (1) according to the principle of idle current with a control element (5) that has two connection states through which a closing element (4) of the door opener moves in different operating states, the element comprising of closing (4) a cross latch with two rotating and bevelled wedge-shaped latch elements on one side and the control element (5) comprising an electromagnet, the cross-latch presented a locking element (10) which is actuated by means of a slide (8), the cross-handle being, according to the principle of idle current, locked by a charged electromagnet, which keeps the slide (8) in a locked position of the cross-latch exceeding the force produced by the spring of the slide (9), the opener characterized by the fact that the slide (8) has a contour with a recess in which the locking element (1) is introduced by means of a roller (11) 0) and also characterized by the fact that the slide (8) is displaced by the action of the slide spring (9) when the electromagnet does not receive current, moving the blocking element (10) by means of the roller (11) to along the contour of the slide (8) inside the recess of the slide (8) and thus releasing the cross latch.

Description

Door opener according to the current principle in repose.

The present invention refers to a door opener according to the principle of the current at rest of in accordance with the general concept described in the claim one.

Door openers are already known according to the principle of the current at rest that includes a rocker handle as tilting closing element, which can house in state closed the door lock latch and, with it, block or release the opening of said door. In this case, the rocker handle is locked and released by an element of electromagnet operated lock. For this, current is applied to an electromagnet according to the principle of the current at rest when the blocking element is embedded and blocks the element of closing, with which the door lock latch is fitted with the closure element and keeps the door in closed position The openers according to the current principle  at rest they are normally applied in exit doors of evacuation or emergency, since in case of blackout the locking element releases the closing element by unlocking the door and leaving the evacuation route open.

The drawback of these openers is that the release of the closure element occurs unreliably only when, when the power supply to the electromagnet, pressure is applied against the door and thus against the closing element to release the rocker handle. So Well, it is usually the case that the person who wishes to open the Door have to push it.

Document DE 38.12.313 A1 discloses a lock provided with a box that has a front face and includes a handle that can move through an opening on the front face between a retracted position and a position of closure protruding from the box; this position is reached by being pushed by a spring, the box also presenting a mechanism of lock that can be turned from a passive position to a position lock in which the mechanism prevents the movement of the latch from the advanced position to the retracted position in the box. He Locking mechanism is operated by means of an electromagnet.

The invention is based on the objective of creating a door opener according to the principle of idle current that releases the closing a door with reliability and that can be manufactured from a economic mode

This objective is met by features included in claim 1.

In the subordinate claims present other advantageous configuration possibilities of present invention

Reliable release of the closure of the the door using a cross latch as a closing element of the current door opener at rest. This cross doorknob is composed of two bevelled latch elements on one side in wedge shape and supported so that they can rotate, which they rest on an axis arranged in the longitudinal direction of the door opener box. In closed state, the latch elements stand out through the door opener box. These doorknob elements of the cross latch have eccentrics on the inside of the strike in such a way that in unlocked state the elements of Doorknob can turn and retract like this inside the box.

The opener has an electromagnet like control element that locks the closing element to provide current. This control element can retract or release a rod according to the operating status. To rod is connected a reversing lever that activates a slide loaded with a spring. Thanks to the control element and the spring of the slide, the slide, which slides over holes oblong, can take two positions. Through the relationship of lever of the reversing lever, the force of the control element depending on the force of the spring. This Sliding has an outline with a recess in which introduces a blocking element by the action of a roller. Saying locking element is engaged with the closing element regardless of the position of the slide, which crashes

If the control element receives current and the rod is retracted, the slide is in position bottom, in which the blocking element, displaced according to the contour of the slide, keeps the closure element locked and, thus, keeps the door in which it is closed The closing element is installed.

If the current is removed from the element of control or an electrical failure occurs, the rod is released and move the slide to the upper position using the spring correspondent. With this movement the element is also retracted closing against the slide by the action of a second spring. By swinging the door the closing element is pushed inside of the locksmith and the opener box, thus opening the door.

An electrical connection contact, which is operates through the door, prevents current from being supplied to the control element too early to avoid blocking the closing element before closing the door, since otherwise it would be impossible to close the door again. This can achieved by means of a tongue contact installed in the door opener strike that corresponds to a permanent magnet located at the door. Another possibility, although more expensive, it would consist of an auxiliary latch that mechanically detected the closed position of the door.

It will be described in more detail below. An example of realization with the help of the drawings. The figures show:

Figure 1 shows a door opener in position locked with the box open in side view;

Figure 2 shows the opener according to the figure 1 in unlocked position;

Figure 3 shows the opener seen from the front of the strike.

The figures show a door opener 1 according to the present invention that operates according to the principle of the idle current. To maintain clarity, in the embodiment example only the necessary elements have been represented. The door opener 1 shown in Figure 1 comprises a box 2 and a strike 3 from which a closing element 4 protrudes, which is configured as a cross latch. According to the principle of the idle current, the control element 5 receives current when the closing element is locked. By providing current to the control element 5, the rod 6 retracts into said control element 5, whereby the rod 6 drives the rotating reversing lever 7 and keeps the slide 8 down against the force of the slide spring 9. Located next to the slide 8 by means of a roller 11 is the locking element 10 that keeps the locking element locked.
close 4.

If the power supply to the power supply is interrupted control element 5, the rod 6 stops holding. In that moment, the spring of the slide 9 moves the slide 8 towards above and the rod 6 leaves the control element 5 by means of the action of the reversing lever 7. The locking element 10 is move with roller 11 along the contour of the slide 8 thanks to the spring action of the locking element 12 until the Inlet of the slide 8. This separates the element of locking 10 of the gear with the closing element 4 releasing a the latter. The unlocked position is represented in the figure 2.

If closing element 4 is pressed in shape cross handle with a lateral force with respect to said cross handle when pushing a door represented only in part in the figure, the cross latch rotates against the spring 13 entering box 2 through strike 3 and releasing So the door. Thus, the twist of the cross handle Provides a secure door release mechanism.

It is also conceivable to use a spring traction instead of the spring 13 shown in the figures, with which the closing element 4 would be immediately introduced in the box 2 through the lock 3 upon release. For the lock, the closing element 4 of the box 2 would be removed again through the strike 3 moving through the element of lock 10.

To prevent the closing element 4 from lock before the door is in the closed position, an auxiliary latch can be used. It would also be advantageous provide the opener with a tongue contact on the strike and provide for a permanent magnet on the door. The tongue contact is connect in series to the power supply of the element control 5 thus preventing current from being supplied to the element control 5 before the door is in position closed.

The simple structure is also advantageous of the construction. It is very easy to modify the forces of control element 5 and the slide spring 9; enough with select the lever ratios of the reverse lever 7. For example, in the case of a control element with a force of 10 N retention and a sliding spring with a force between 20 and 30 N, a relationship of 1: 3 When roller 11 is used to move the element of lock 10 on the contour of the slide 8, forces occur Low friction. For emergency exit doors or evacuation, which must be unlocked by operating a device emergency, it is only necessary to have a socket for the element of closing. This shot can be configured very simply, by example, in the form of a rectangular recess.

List of reference numbers

one

open doors

2

box

3

closer

4

closing element

5

control element

6

dipstick

7

reverse lever

8

slide

9

dock of the slide

10

blocking element

eleven

roller

12

locking element spring

13

dock

Claims (3)

1. Door opener (1) according to the principle of idle current with a control element (5) that has two connection states through which a closing element (4) of the door opener moves in different operating states, comprising the closing element (4) a cross latch with two wedge-shaped rotating and bevelled latch elements on one side and the control element (5) comprising an electromagnet, the cross-latch presented a locking element (10) which is operated by means of a slide (8), the latch being crossed, according to the principle of idle current, locked by a charged electromagnet, which keeps the slider (8) in a locked position of the cross latch exceeding the force produced by the slide spring (9), the opener characterized by the fact that the slide (8) has a contour with a recess in which the locking element is introduced by means of a roller (11) (10) and also characterized by the fact that the slide (8) is displaced by the action of the slide spring (9) when the electromagnet does not receive current, moving the blocking element (10) by means of the roller (11) along the contour of the slide (8) inside the recess of the slide (8) and thus releasing the cross latch. 2. Door opener according to the principle of the idle current according to claim 1 characterized in that the locking element (10) is inserted in the closing element (4) blocking it independently of the position of the slide (8 ). 3. Door opener according to the principle of the idle current according to claim 1 characterized in that the control element (5) corresponds to a complementary connecting element that detects the position of the door.