SK111695A3 - Chain operating device for opening and closing a window or 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 frame and the frame, respectively. 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-parted 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 frame 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 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 and retaining, respectively, 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 and from 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

these controls devices They are manual i power control. from and in the patent application DK 2632/90. if the tuning device has fasten to window

known in U.S. Pat. No. 4,521,993, such a chain or door, which must fulfill the mission of emergency exit, is necessary for the window or door to 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.

In the solution which is the subject of the above-mentioned DK patent application, it is therefore necessary, with a view to affecting said connection, that the chain can be driven by an electric motor a little further from the second fastening connection in order to connect the free end of the chain to the first fastener. Obviously, it is then required that the engine can also be operated in the disconnected state.

In particular, inwardly opening doors and windows, due to the limited space available, it is generally necessary for the second coupling fixture comprising the gear wheel and the drive element to be fixed to the opening leaf, while the first fixture is connected to the free end of the chain 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 according to the invention in that the clamping device connected to said one end of the chain is designed as a two-piece clamping device consisting of a first part of the chain clamp mounted on a window or door leaf and a second part of the clamp connected to the main frame (door frame). Said fastening portions having an elongated shape may be connected to each other and may be provided at one end with a fixed fastening tab and at the other end may have a detachable tab such that the fixed tab of the first tab may be retained in releasable engagement by the releasable tab of the second tab. parts of each releasable tab by being displaceable between two positions to release or retain the corresponding fixed tabs.

This two-piece solution of the fastener with a loose end of the chain interconnecting the fasteners makes it possible, without difficulty, to disconnect the two parts of the fastener as well as to reconnect them also 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, which can be made essentially concealed for the view so that the main conductor of the electric motor lead passes inside the chain and is connected to the terminals in said first portion of the clamping tack. Said clamps are in contact with the clamps in the second part of the fixture when the two fastening parts are connected. To the second part, the connecting conductor is guided through the 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 fixture which is connected to the free end of the chain and which in this case is fixed to the main frame structure (doorframe) in the 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 X 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 3 for retaining the free end of the chain 4 is connected to the fastening part in the opening 2 of the bottom wall χ.

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

At the end of the U-profile ^Λ shown at right, it is constructed projecting bracket 6 and is provided with a transverse pin gripping seventh

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, longitudinally displaceable spring slides 6 are mounted at this end of the U-profile. A recess 10 is formed in the carriage 8. The rear wall of said recess 10 forms a hook-like projection XX. The slide 6 is thus positioned relative to the plane of the slots 8 in the walls 5 so that the depression 10 by activating the slide in the direction opposite to the slope spring can be aligned with the slots 8 to achieve a firm grip on the second fastening part described later.

It is an essential feature of the invention that the lead wire 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, as shown in Figure 3, may be secured within the chain 4.

As can be seen from Figures 4 to 7, the fastening part 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 fasten to the main frame structure by means of screws. However, the second mounting portion differs from the first 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 opposite upwardly facing side walls 18, 19 as in the profile of Figures 1 to 3. Thus, the upwardly facing side walls 5 of said U-profile overlap the fastening parts 4 to 7. At the end of the profile in the left-hand position of FIGS. 4 to 7, the transverse locking pin 22 of the tab extends through the opposing side wall cut-outs 18. The fastening pin is inserted into the recess 10 by a bias spring. equipped with longitudinally displaceable carriages 9 in the fastening part shown in Figures 1 to 3.

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

The rotatably mounted tilt tab 23 is formed as a guide rail 26. As shown clearly in FIG. 6, the orifice 26a, in the stable position shown in FIG. 4, is flush with the fastening portion shown in FIGS. 1 to 3 accordingly. whether the connection is to be locked by means of the locking pin 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.

The terminal element 20 of the terminals 20 on the mounting portion in Figures 4 to 7 is connected to a conductor 27 extending through

U-profile and main window frame. 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, in addition to the contact terminals 15, 21 on the connecting conductor of the electric motor, not shown in the figures, contact terminals for sensing devices, for example a temperature and weather sensing device, mounted on the main frame structure.

From the interconnected condition of the two fastening portions, the fastening portion shown in Figures 1 to 3 and coupled to the free end of the chain can be released from the fastening portion shown in Figures 4 to 7 by actuating the hinged tab 23 and correspondingly the spring containing the displaceable to release the slide 9 from the retaining pin 22 of the retainer by pushing the end of the slide in the direction opposite the inclined spring.

When the two connecting parts are to be joined together again, the wing portion closes into the main frame, whereby the locking locking pin 22 enters the mating slots 8, thereby pushing the slide 6 back against the spring, causing the slide 6 to reach the slide. the bottom of the recess 10 and are held in this position by the spring.

When the hinge tab 23 reaches the position shown in Figure 4, the tab lock pin 7 is engaged by the guide rail 26 and the window sash can now be pushed into the main frame by pressing the hinge tab 23, which will then move 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 hinge tab 23, a change can be achieved ensuring that only a small depression of the hinge tab will be sufficient to effect said gripping action.

Although the invention has heretofore been described with particular reference to inward-opening windows and doors in which the sprocket and electric motor are housed in a frame fixture and although the invention brings particular advantages of this solution

7, the invention is not limited thereto, since the easy coupling of the two fastening portions further 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 the above-cited US No. 4,521,993. Similarly, the use of the invention is not limited to electrically driven control devices.

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Claims (7)

PATENT CLAIMS A chain control device for opening and closing a window or door leaf to or from an open ventilation position, comprising a first and a second clamping device 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 part (1, 5) connected to the chain (4) and a second part (17 to 19) ) associated with the wing or main frame; said parts (1, 5; 17 to 19) are in the form of elongated profiles, may be connected to each other and individually may be provided at one end with a fixed fastening tab (7, 22) and at the other end may have a detachable tab (9, 23); wherein the fixed tab of the first portion can be retained in a disengageable engagement with the releasable tab of the second securing portion of each of the releasable tabs (9.23), which are displaceable in two positions, into a release position, and into a retaining position of the corresponding fixed tabs (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 tabs (7, 22) of the two fastening parts are designed as locking pins transversely to the side walls (5, 18). ) of these profiles. Chain control device according to claim 2, characterized in that the detachable tabs (9) of the first fastening part have a spring-mounted longitudinally displaceable slide with a cutout (10) having a hook-like projection (11) on one side edge; the recess (10) for retaining or detaching the opposite locking pin (22) of the second securing portion can be adjusted by sliding the slide (9) in the direction opposite to the spring so as to license with stationary recesses (8) of the side walls (5). profile. Chain control device according to claim 2 or 3, characterized in that the releasable fastening tab (23) of the second fastening part is designed as a hinged tab which can be tilted between two positions by means of an inclined spring, from which position corresponding to holding the fixed tab (7). ) is a stable position; said hinged tab (23) is provided with a guide bar (26) whose mouth (26a) in this position is flush with the first fastening portion for retaining or releasing the opposing locking tab (7) of the first fastening portion while in said stable the position is oriented substantially longitudinally with the profile of the second fastening portion for retaining said clip pin (7). Chain control device according to claim 3 and 4, characterized in that the locking bolts (7, 22) and the releasable fasteners (9, 23) of said two fastening parts are positioned relative to one another such that the fastening locking pin (22) of the second fastening part - when the two parts are joined together and the window is to be closed from the position in which the fastening parts have been released from each other - first engage in said slots (8) in the spring-equipped carriage (9) of the first fastening part, whose pin (7) engages in the guide bar (26) of the hinged fastening tab (23) of the second fastening portion, and to subsequently rotate the second fastening portion to said stable position, the frame is pushed into the fully closed position. Chain control device according to any one of the preceding claims, in particular for inward opening windows and doors, the second chain wheel fixture of which comprises a built-in electric motor which drives the chain wheel via a transmission and is fixed - ίο on the frame, while the first chain fixture connected to the chain is mounted on the main frame, characterized in that the electric motor lead (12) extends inside the chain (4) to the switch terminals (14) on said first fastening part said terminals in an interconnected state of said two fastening portions are in contact with a switch (20) of the second fastening portion 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 also contact terminals for connecting the conductors to the sensing devices. • mounted on the frame.