DE2647191A1 - LOCKING MECHANISM - Google Patents

Description

MÜLLER-BORii · DKtFJäl. · SCHÖN · HERTEJL

PATE N "TA IT WILTE

W 12o4 / St.

DR. WOLFGANG MÜLLER-BORS (PATENT LAWYER FROM 1927 - 1975) DR. PAUL DEUFEL, D1PL.-CHEM. DR. ALFRED SCHÖN, DIPL.-CHEM. WERNER HERTEL. DIPL.-PHYS.

WINGARD LTD.
Chichester, Sussex, England ^{ί9 ÜKl m}

Locking mechanism

The invention relates to a locking mechanism, in particular for sliding roofs, sliding doors or sliding windows.

Sunroofs are usually mounted in vehicles so that they are on rails or treads forwards or forwards are movable at the rear. In order to be able to move the roof, a handle can be provided, whereby a pair of locks are made by the initial movement of the handle the position of engagement with the rails or treads, so that the roof is in the open or closed position can slide.

In the patent application P 26 .46 2.17-9 (W 12o5) was a suitable device has already been proposed in which a preferred embodiment corresponds when moving a handle at the same time the ends of a length of belt are withdrawn, which with the respective Interlocks are connected. With locking

70 9 8 18/0745

MUNICH 80 SXEBERTSTR. 4 POST BOX 860720 CABLE: MUEBOPAT TEL. (089) 4740 05 TELEX 5-24ÜS5

arrangements, however, in which the handle is moved in the intended direction of movement of the roof, leads the pressure required to retract the latches to accelerate the roof away from the handle, whereupon the locks come back into the engaged position. This can repeat itself several times when opening, which leads to can lead to an unpleasant rattling.

The object on which the invention is based is now to create a lock or locks, which can be used in particular in sunroofs, the above disadvantage being avoided.

To achieve this object, a locking mechanism is provided according to the invention created, which has a displaceable element for engagement with a recess or with a projection, and means for biasing the member to hold it normally engaged, the Biasing means has the property that the biasing force is reduced when the element is displaced by to release the engagement with the recess or the projection.

The element is preferably displaceable in a holder, the pretensioning device being an elastic element which is connected so that it is movable as a whole between the element and the holder. The initial load exerted by the pretensioner is then reduced by the movement of the pretensioner when the element is displaced.

Preferably the element is arranged for a pivoting movement which occurs after the element has passed a predetermined one Distance has been moved. For example, the element can be hinged to the holder at one end and be connected at its other end to the element so that the ends of the element move together to the

709818/074 5

To create bias and then to pivot the element on the bracket. The element is expedient a wire torsion spring having a pair of arms extending from a loop. With a preferred In the embodiment, the element is sliding in the holder slidably while the arms of the spring extend transversely to the sliding movement so that they are drawn together when the element is released from the position of engagement with the recess or projection. The spring will then pivoted overall on the bracket.

As an alternative to the movable pretensioning element, devices such as a slip clutch or a brake, which act on the element to reduce the bias when the element is engaged is resolved. A magnet can also be used for the same effect if the element is a ferromagnetic one Part is or is provided with such a part.

According to the invention, an arrangement is created which has a sliding roof, a sliding door or a sliding window in Combination with the locking mechanism and an actuating element to open the sliding roof, the sliding door or the sash window, wherein the actuator moves in the same direction to engage To release the lock and to open the sliding roof, the sliding door or the sliding window. Thus, only one movement is required to open the roof, the door or the window, whereby the opening element is not accelerated away from the actuation force, as the preload is reduced when the lock is moved solves.

An exemplary embodiment of the invention is explained in more detail with the aid of the accompanying drawing.

709818/0745

26A7191

Fig. 1 shows a locking mechanism engaging a rack in a side view.

Fig. 2 shows the mechanism of Fig. 1 in an end view.

The locking mechanism shown in the drawing has a holder 1 for a displaceable element 2 on which a length of a webbing 3 is attached. The element 2 has a pair of teeth 4 for engagement with a rack 5. The element 2 is in engagement with the rack 5 is held by means of a torsion spring 6 made of wire, one arm of which is articulated at 7 on the holder 1 and whose other arm is anchored in a hole 8 in the element 2. The spring 6 extends transversely for the displacement movement of the element 2 and preferably has at least one loop 9, which is used for its biasing action contributes.

When tension is applied to the length of belt 3, element 2 disengages from the rack 5 pulled, the arms of the spring 6 being moved towards each other by the initial movement of the element. This requires a relatively large force. However, once the teeth 4 are out of engagement in the rack 5 are released, the force drops to almost zero, since a further displacement movement of the element 2 hardly any rotation the spring 6 brings about the pivot point 7.

When the locking mechanism is used with a sliding roof, especially with a sliding roof the device according to the proposal mentioned at the beginning, the locks can be released from the engaged position without exerting a force that accelerates the roof after the disengagement.

709818/0745

Claims (9)

EXPECTATIONS 1. locking mechanism, marked by a displaceable element (2, 4) for engagement in a recess or a projection (5), and by means (6) for pretensioning the element (2) in order to normally bring it into the engaged position hold, wherein the pretensioning device (6) has the property that the pretensioning force is reduced when the Element (2) is displaced in order to release the engagement with the recess or the projection (5). 2. Mechanism according to claim 1, characterized in that the element (2) in a holder (1) is displaceable and that the pretensioning device has an elastic element (6) which is connected in this way is that it is movable as a whole between the element (2) and the holder (1). 3. Mechanism according to claim 2, characterized in that the elastic element (6) for arranged a pivoting movement and between the element (2) and the holder (1) is switched so that it pivots after a predetermined displacement of the element (2) whereupon the pre-tensioning force is reduced. 4. Mechanism according to claim 2 or 3, characterized in that the elastic element (6) has a Wire torsion spring is. 5. Mechanism according to claim 4, characterized in that the element (2) is slidable sits in the holder (1) and that the torsion spring (6) has arms that are connected by a loop (9) go out and cross to the sliding movement of the 709818/0745 originally inspected Bracket (1) extend, whereby the arms are drawn together during the sliding movement of the element (2) and the spring (6) is pivoted as a whole on the holder (1). 6. Mechanism according to claim 1, characterized in that the biasing device is a Slipping clutch or a brake to reduce the pre-tensioning force when moving the element (2). 7. Mechanism according to claim 1, characterized in that the biasing device a Has magnets and that the element or a part associated with the element consists of a ferromagnetic Material. 8. Mechanism according to one of the preceding claims, characterized in that it is at a sliding roof, a sliding door or a sliding window. 9. Mechanism according to claim 8, characterized by an actuating element which is connected to the displaceable element for the disengagement of this Element is connected to a projection or a recess, the actuating element in moves in the same direction as the sunroof, sliding door or window to disengage the lock. 709818/0745