SK284376B6 - A chain operating device for opening and closing a window or a door - Google Patents

Abstract

For opening and closing a window or a door into and from a ventilation position a chain operating device is provided, having a first and a second fixture secured on the main window frame and on the wing of the window or the door. One fixture is firmly connected with one end of a chain (4) in engagement with a sprocket wheel mounted in the second fixture and which is driven by a rotating driving member. Said one connected fixture is designed as a two-section coupling fixture comprising a first fixture part (1, 5) connected with the chain (4) and a second fixture part (17 to 19) connected with a wing or main frame structure. Said two fixture parts (1, 5; 17 to 19) have the form of elongated profiles that may be coupled together having individually at one end a stationary locking means (7, 22) and at the other end a releasable locking means (9, 23) so that the first stationary locking means on one fixture part may be retained in releasable engagement with the releasable locking means on the second fixture part. Each of the releasable locking means (9, 23) can be switched over between two positions for releasing or retaining, the corresponding stationary locking means (22, 7).

Description

Technical field

The invention relates to a chain control device for opening and closing a window or door to an open ventilation position and an open ventilation position and comprises a first and a second clamping fixture mounted opposite each other on the main frame and the window or door leaf. One clamping fixture is rigidly coupled to an end of a chain that engages a sprocket mounted in a second clamping fixture and driven by a rotary drive member.

BACKGROUND OF THE INVENTION

Such control devices are known in both manual and electrical versions of U.S. Pat. No. 4,521,993 and DK 2632/90. If such a chain control device is to be mounted on a window or door that has to fulfill the emergency exit mission, it is essential that the window or door can be opened more than to the ventilation position. This requires that the chain can be released from the first or second clamping junction to the window in the fully closed position. When the chain and the associated fastener are to be reconnected, this is normally not possible if the free end of the chain is in a position corresponding to the position of the closed window in which the window sash, if it is to seal, abuts the main frame of the structure.

Therefore, in the solution of the aforementioned patent application DK, with respect to affecting said connection, it is necessary that the chain can be driven by an electric motor a little further from the second fastening connection so that the free end of the chain can be connected to the first clamping device. It is then obviously necessary for the engine to be able to be started even when the motor is switched off.

Especially in the case of inwardly opening doors and windows, due to the limited space available, a second coupling fixture comprising a gear and a drive element is generally required to be attached to the opening leaf while the first fixture is connected to the free end of the chain. fastened to the main frame. In order to start the electric motor when the chain is disconnected, the solution requires a relatively complex loose and visible electrical connection between the frame and sash.

Accordingly, it is an object of the present invention to provide a novel solution which makes it particularly easy to reconnect the free end of the chain with the first coupling fixture in the fully closed position of the window, i.e. when sealing.

SUMMARY OF THE INVENTION

This is achieved by the object of the present invention, which is a chain control device for opening and closing the window or door leaf to an open ventilation position or an open ventilation position, comprising a first and a second clamping fixture mounted opposite each other on the main frame and the window leaf; the door; one fastener is rigidly connected to a chain end (4) engaging a sprocket mounted in a second fastener and a driven rotary drive member, wherein one fastener connected to said one chain end is designed as a two-piece connection , comprising a first attachment part connected to the chain and a second attachment part connected to the sash or main frame; said fastening portions being elongated in shape, optionally connected to each other and optionally provided with a fixed fastening tab at one end and may have a detachable fastener at the other end such that the firm fastener of the first fastening portion can be retained in releasable engagement with the releasable fastener parts of each releasable clip that are displaceable in two positions, into a release position and into a position to retain the corresponding fixed clips.

The fixture connected to said one end of the chain is designed as a two-piece fixture consisting of a first fixture portion of the chain fixture mounted on a window or door leaf and a second fixture portion of the fixture connected to the main frame (frame). Said fastening portions having an elongate shape may be connected to each other and may be provided at one end with a fixed fastening tab and at the other end having a releasable fastener such that the firm fastener of the first fastening portion may be retained in releasable engagement by the releasable fastener of the second fastening fastener. parts of each releasable clip by being displaceable between two positions to release or retain the corresponding fixed clips,

This two-piece solution of the fastener with a loose end of the chain connecting the fasteners makes it possible to easily disconnect the two fastening parts of the fastener from one another, and also to re-connect them when the window or door leaf is close to the frame. Because of the fact that the connection thus does not require the starting of the electric motor, it can therefore also be influenced in situations where the power supply is interrupted.

In a preferred embodiment, the chain control device according to the invention is particularly suitable for mounting in doors and windows which open inwards. Said connection of the second coupling fixture to the chain wheel comprises an installed electric motor as a driving element which drives the chain wheel through the transmission and is mounted on the main frame (frame). In accordance with the present invention, this solution allows for a much simpler electrical wiring that can be made substantially concealed for the view so that the main conductor of the electric motor lead extends inside the chain and is connected to the terminals in said first fastening portion of the fixture. Said clamps are in contact with the clamps in the second mounting portion of the fixture when the two mounting portions are connected. The connecting conductor is guided to the second fastening part by a main frame structure.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will now be explained in more detail by way of example with reference to the schematic drawings. The drawings show an embodiment according to the invention of a two-part clamping device which is connected to the free end of the chain and which in this case is fixed to the main frame (doorframe) of the inwardly opening windows.

In the accompanying drawings, Figures 1 and 2 show a fastening portion coupled to the free end of the chain in a side view and a longitudinal section; Figure 3 is a cross-sectional detail of the section of Figure 2; Figures 4 and 5 show a fastening portion fastened to the main frame; 6 is a longitudinal section along line VI and VI in FIG. 5, and FIG. 7 is a detail section along line VII-VII in FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION

The fastening portion shown in Figures 1 to 3 is predominantly shaped as an elongated U-profile with a bottom wall 1 adjacent to a clamping fixture mounted on a main frame on which the sprocket is coupled to an electric motor and transmission. The chain holder for attaching the free end of the chain 4 is connected to the fastening part in the opening 2 of the bottom wall 1.

Two opposing parallel and substantially upwardly facing walls are connected to the bottom wall 1 '. One of said parallel walls is shown as 5 in Figure 2.

At the end of the U-profile shown in the figure to the right, a protruding holder 6 is provided and is provided with a transverse retaining pin 7.

At the opposite end of the pair of walls 5, the pair of cut-outs 8 are flush with one another and have a substantially V-mouth shape. In addition, a longitudinally displaceable spring carriage 9 is mounted at this end of the U-profile. A recess 10 is formed in the carriage 9. The rear wall of said recess 10 forms a hook-like projection 11. The carriage 9 is thus positioned relative to the cutout plane 8 in the walls 5 to 10 by actuating the slide in the direction opposite to the bias spring, it could be aligned with the slots 8 to obtain a firm grip on the second fastening part, which will be described below.

It is an essential feature of the invention that the supply conductor passes through the chain 4 to the fork 13, which connects to the motor in the frame of the fixture, not shown in the figure. In the fastening portions shown, the connecting conductor is connected to the terminal portion of the terminals 14, which in the embodiment shown comprises two contact terminals 15. In order to maintain the conductive connection 12, one or more brackets 16 may be fastened inside the chain, as shown in Figure 3.

As is apparent from Figures 4 to 7, the fastening portion which is fastened to the main frame is most often formed as a U-profile with a bottom wall 17 with screw holes 17a which serve to be fastened to the main frame structure by means of screws. However, the second fastening portion differs from the first fastening portion shown in Figures 1 to 3 in that the side walls facing upwardly from the bottom wall 17 consist of two separate sections 18 and 19, with a free space therebetween, opposite the terminal block 20 s contact terminals 21, which serve to connect the fastening portions and are electrically conductively connected to the contact terminals 15 on the terminal element 14 on the fastening portion shown in Figures 1 to 3.

The U-profile of the fastening part in Figures 4 to 7 is designed with a smaller distance between the opposing upwardly facing side walls 18, 19 than in the profile of Figures 1 to 3. Thus, the upwardly facing side walls 5 of said U-profile overlap 4 to 7. At the end of the profile at the left-hand position in FIGS. 4 to 7 there is a transverse locking pin of the clip 22 extending between opposing cut-outs of the side walls 18. The connecting pin is inserted into the recess 10 by an inclined spring. of the longitudinally displaceable carriage 9 in the fastening portion shown in Figures 1 to 3.

At the opposite end of the fastening portion of Figures 4 to 7, a hinged releasable clip 23 is provided which is rotatably coupled to the pin 24 between the two stable positions shown in Figure 4 and Figure 6 by means of a bias spring 25 to release and retain the clip locking pin 7. in the mounting portion of Figures 1 to 3.

The rotatably mounted foldable detachable clip 23 is formed as a guide rail 26, as shown clearly in Figure 6, the mouth 26a of which in the stable position shown in Figure 4 is flush with the fastening portion shown in Figures 1 to 3 accordingly whether the connection is to be locked by the locking pin of the clip 7 or released. In the second stable position, the guide rail 26 is oriented substantially longitudinally with the U-profile. In this position, the window is completely closed with the wing fixedly engaged in the main frame of the structure.

4 to 7 is connected to the conductor 27 passing through the U-profile and the main frame structure of the window. The conductor can also pass unnoticeably through the main frame through an opening 28 in the bottom wall 17 of the U-profile. The terminal parts 14, 20 may include contact terminals for sensing devices, such as a temperature and weather sensing device, mounted on the main frame structure, in addition to the contact terminals 15, 21 for the connecting conductor of the electric motor not shown in the figures.

From the interconnected state of the two fastening portions, the fastening portion shown in Figures 1 to 3 and connected to the free end of the chain can be released from the fastening portion shown in Figures 4 to 7 by actuating the hinged detachable clip 23 and correspondingly release the movable carriage 9 from the gripping of the locking pin of the clip 22 by pushing the end of the carriage in the direction opposite to the inclined spring.

When the two fastening portions are to be joined together again, the wing portion closes into the main frame, whereby the locking pin of the clip 22 gets into the mating slots 8, thereby pushing the slide 9 back against the spring, causing the slide 9 to reach the bottom. recesses 10 and are held by the spring in this position.

When the hinged detachable tab 23 reaches the position shown in Figure 4, the locking pin of the tab 7 is engaged by the guide rail 26 and the window sash can now be pushed into the main frame by pressing the hinged detachable tab 23, which thereby moves to the position shown in Figure 6.

As shown in Figure 6, the guide 26 is provided with a stop 26b. By appropriately selecting the distance of said stop from the pivot pin 24 relative to the distance from the finger protrusion 28 at the very end of the hinged releasable clip 23, a change can be achieved ensuring that only a small depression of the hinged clip is sufficient to effect said gripping action.

Although the invention has so far been described with particular reference to inwardly opening windows and doors in which the sprocket and electric motor are housed in the frame fixture and although the invention brings particular advantages of this solution, the invention is not limited thereto because easy attachment of the two fastening parts further it provides control advantages compared to installations in which the drive member is positioned in the main frame such that it is the case of a chain control device according to U.S. Pat. No. 4,521,993. Similarly, the use of the invention is not limited to electrically driven control devices.

Claims (7)

PATENT CLAIMS A chain control device for opening and closing a window or door leaf to an open ventilation position or an open ventilation position, comprising a first and a second clamping fixture mounted opposite each other on the main frame and the window or door leaf; one fastener is rigidly connected to an end of a chain (4) engaging a sprocket mounted in the second fastener and driven by the rotary drive element; characterized in that one clamping device connected to said one end of the chain (4) is designed as a two-part connection consisting of a first fastening part (1, 5) connected to the chain (4) and a second fastening part (17 to 17). 19), attached to the wing or main frame; said fastening portions (1, 5; 17 to 19) are in the form of elongated profiles, are optionally interconnected and optionally are provided at one end with a fixed fastening tab (7, 22) and may have a detachable tab (9, 23) at the other end such that the fixed fastener of the first fastening portion can be retained in releasable engagement with the releasable fastener of the second fastening portion of each releasable fastener (9, 23), which is displaceable in two positions, into a release position and into a retaining position of the corresponding fixed fasteners (22). , 7). Chain control device according to claim 1, characterized in that the two fastening parts are designed as U-profiles and the fixed fastening clips (7, 22) of the two fastening parts are designed as locking pins transversely to the side walls (5, 18). listed profiles. Chain control device according to claim 2, characterized in that the detachable clips (9) of the first fastening part have a spring-mounted longitudinally displaceable slide with a cutout (10) having a hook-like projection (11) at one side edge; the recess (10) for retaining or detaching the opposite locking pin (22) of the second fastening portion allows the sliding (9) in the direction opposite to the spring to align with the stationary recesses (8) of the side walls (5) of the U-profile. Chain control device according to claim 2 or 3, characterized in that the releasable clip (23) of the second fastening part is designed as a hinged clip, which can be folded by means of an inclined spring between two positions, the position corresponding to the retention of the fixed clip (7). is a stable position; said hinged releasable clip (23) is provided with a guide bar (26) whose mouth (26a) in this position is flush with the first fastening portion to retain or release the opposite locking pin of the fastening tab (7) of the first fastening portion while in said position in a stable position, it is oriented substantially longitudinally with the profile of the second securing portion to retain said clip pin (7). The chain control device according to claim 3 and 4, characterized in that the locking pins of the clips (7, 22) and the releasable clips (9, 23) of said two fastening parts are first positioned relative to each other for engaging the clip locking pin. (22) a second fastening portion (17, 18, 19) in the slots (8) in the spring-equipped carriage (9) of the first fastening portion, and then to engage the first fastening portion pin in the guide bar (26) of the hinged releasable clip (23) of the fastening portion, and to rotate the second fastening portion to said stable position, the frame is pushed into the fully closed position. Chain control device according to one of the preceding claims, in particular for inward opening windows and doors, characterized in that the second chain wheel fixture as the driving element comprises an integrated electric motor which drives the chain wheel via a transmission and is fixed to the frame whereas the first chain fixture coupled to the chain is mounted on the main frame and within the chain (4) the electrical motor lead (12) passes to the switch terminals (14) on the first fastening portion, said terminals in an interconnected state of the two fastening means The portions are in contact with the switch (20) of the second securing part to which the conductor (27) passes through the main frame. Chain control device according to claim 6, characterized in that the terminals (14, 20) of the two fastening parts have, in addition to the contact terminals (15, 21) for connecting the conductor to the electric motor, contact terminals for connecting the conductors to the sensing devices mounted on the frame.