DE622197C - Lock for sliding window - Google Patents

Description

The invention relates to a closure for sliding windows.

There are known closures for sliding windows in which a bottom of the sliding window arranged, downward and in the closed position pivoted beyond the dead center locking hook that Pulls the sliding window down so that it sits tightly at the bottom. In its upper part but the window sash is exposed and can swing in the direction against the window frame. The ingress of drafts and rattling when there is wind is the result. Furthermore, closures are already known for the lower sash of sliding windows, which are made of a mounted on both sides approximately in the middle of the sliding window frame, upward pivoting hooks exist, the effective edge of which is in the direction to the window runs obliquely downwards against the ground and in the closed position a strike plate of the window frame engages behind. This will probably the window when closed against the window frame, but not downwards as well pressed so that a tight seal is not achieved here. In addition, such Closures are easy to open because they are only under the action of a spring, which also causes a lot of wear of the parts that work with it.

The aim of the invention is to avoid these problems.

The same lies in the fact that in the case of a closure for sliding windows, the swivel hook of which is mounted in the frame of the window and which is directed upwards and engages behind a striker plate of the window frame with its effective edge in the direction of the window runs obliquely downwards against the ground and is driven by a hand lever, the swivel hook is connected to the hand lever by a pivot rod in such a way that the hinge point h between the hand lever and the pivot rod protrudes beyond the dead point position when closing and the hook presses the window not only against the window frame, but also downwards and holds on in this position.

The drawing shows an embodiment of the new closure in longitudinal section.

In the frame α of the sliding window (expediently on both side legs) a recess b is provided, into which the lock housing c is inserted. In the same, an upwardly directed hook e is mounted, rotatable about an axis d , on which a pivot rod g engages on a bolt f. This in turn is connected at h to a hand lever k rotatable about an axis i .

In the closed position, the hook e protrudes into a recess I of the window frame m and engages behind a strike plate η covering this recess. It has a role p at the upper edge of its opening 0,

against which the hook e is supported with the base q of its effective edge.

The mode of operation of the new closure is as follows: - - -

When the shutter is open, the individual parts take the one drawn in dashed lines Position. When the lock is closed, the lever is shown in the arrow direction in the drawn in full lines

ίο pivoted position, hook e being carried along by the articulated rod g. The same describes an arc around the axis d (indicated by dash-dotted lines). Towards the end of this movement, the hook e meets the basic q its operative edge against the RoIIe ^ of the striking plate n. Since this roller forms a fixed abutment, in continuation of the closing movement of the window in the direction of arrow r is pressed downward, so that it closes tightly at the bottom. Furthermore, since the upper part of the circular arc path ί of the hook e is directed inwards, a firm pressing of the window frame α against the window frame m is ensured.

In the final position of the lever k , the hinge axis h of the rod g is over its dead

point, ie beyond the connecting line · between the axes of rotation / and i . It is thereby achieved "that hook e 3 ° and lever k stop automatically and without any further securing in the closed position.

Claims (1)

Claim: _3S Closure for sliding windows, the upwardly directed swivel hook of which is mounted in the frame of the window and engages behind a locking plate of the window frame in the closed position with its effective edge in the direction of the window runs obliquely downwards against the ground and is driven by a hand lever, characterized in that the swivel hook (e) is connected to the hand lever (k) by a pivot rod (g) in such a way that the pivot point (K) between the hand lever (k) and the pivot rod (g) extends beyond the dead center position when closed and the hook (e) not only presses the window against the window frame, but also downwards and holds it in this position. * For this purpose ι sheet of drawings