DE102018003810B4 - Locking console for locking and unlocking a sash - Google Patents

Abstract

Locking console (6) for locking and unlocking a wing (3) in connection with a chain drive (4), the wing (3) being provided with a fitting which can be actuated by a rotary movement using a square head (7) inserted therein and in which there is a screw hole on each side of the insertion opening for the square (7), andwherein the locking bracket (6) has a square (7) and at least one helical compression spring (14, 15), the locking bracket (6) having one on two parallel Axles-guided carriage (12), the two axes being fixable in the screw holes on the wing (3) and being connected to one another via an end plate (11), the carriage (12) having an internal thread (13) for engaging a spindle ( 8) which is designed as an extension of the square (7), the carriage (12) being pressed against the wing (3) by at least one helical compression spring (14, 15) arranged on each of the axles is supported, and wherein means for coupling the chain (5) of a chain drive (4) are provided on the carriage (12), characterized in that two helical compression springs (14, 15) of different lengths and different strengths in the unloaded state are arranged one inside the other, wherein the shorter, outer helical compression springs (14) are relieved during the movement of the carriage (12) in the direction of the end plate (11) before it reaches its stop position on the end plate (11), wherein the helical compression springs (14, 15) have a progressive spring characteristic and /or have a combined spring characteristic by combining several helical compression springs (14, 15), with the carriage (12) having recesses (16) into which both helical compression springs (14, 15) engage in such a way that the helical springs (14, 15) can be pressed into the recesses (16) of the carriage (12) in a compressed state.

Description

TECHNICAL AREA

The present invention relates to a locking bracket for locking and unlocking a leaf in connection with a chain drive, the leaf being provided with a fitting which can be actuated by a rotary movement by means of a square inserted therein and in which on both sides of the insertion opening for the square a screw hole is present and the locking bracket has a square and at least one helical compression spring.

The term “sash” should be understood here in particular as window sashes, but also flaps in general, such as are used, for example, for ventilation devices, smoke outlets or the like.

STATE OF THE ART

A device for the power-operated opening and closing of windows or flaps with a circumferential locking strap is from DE 102 38 192 B4 famous. A locking bracket of the aforementioned type is attached to the wing, on which the chain of a motorized chain drive acts. The chain drive is attached to the frame of the sash or flap. Part of the linear lifting movement of the chain drive is to be converted into a rotary movement by the locking bracket, with which the locking strip of the window or hatch is actuated. The locking console includes a cylinder, a piston and between them a guide bushing to which a square is connected. The movement of the piston in the cylinder is converted into a rotary movement by the guide bush via a simple link guide. The piston is preloaded by a helical compression spring. When the piston is extended, the locking console has a not inconsiderable overall height compared to the window sash. The most important parts of the device must be specially made.

From the EP 2 366 859 A1 is known an actuation system for opening/closing casements comprising a stationary frame internally surrounding an opening which in turn is closed by a movable frame moving relative to the stationary frame. The stationary frame and/or the movable frame have abutting elements and locking bolts for locking the movable frame to the stationary frame in the closed position, which cooperate with corresponding engagement seats on the stationary frame. Also provided are at least one operating mechanism for moving the bolts and at least one actuator for moving the mobile frame from the open position to the closed position and vice versa, comprising at least one push/pull element positioned between the two open and closed positions and suitable for moving the movable frame, the push/pull element being arranged between the stationary frame and the movable frame, to which it is connected via an end member of the pusher element.

From the DE 200 17 160 U1 a handle-operated lock is known, in particular a mortise lock, with a housing accommodating the lock device, a rotatably mounted nut, a slide drive-connected to the nut and a return spring acting on the slide, characterized in that the spring is clamped in a receptacle fixed to the housing, that on A projection provided on the slide engages both ends of the spring and that one end of the spring can be compressed in the receptacle by means of the associated projection.

From the FR 27 80 624 A1 an elastic suspension for mattresses is known.

From the US 2007/0 194 506 A1 discloses a force control strut having an elongate housing including a straight guide tube having a cylindrical inner surface, a rod member having an inner end reciprocable along the guide tube and an outer end extending outwardly from the housing A guide member secured in the first end of the housing to form a bushing allowing reciprocation of the rod member between retracted and extended positions and having a bottom plug secured to the second end of the housing. A cylindrical guide piston is fixed to the inner end of the rod and is slidable along the inner cylindrical surface of the housing. A coil spring is located between the piston and one end of the housing and biases the rod in a specific direction within the housing. There is a dampening mechanism combined with the moving rod, which includes a ram that is reciprocated in an elongated force control passageway within the rod. The plunger is moveable outwardly of the rod and has a distal end engageable with the bottom plug to push the plunger into the force control passage to dampen movement of the rod within the housing.

From the U.S. 4,333,403A a bogie of a railroad car is known which is supported by one or more springs.

PRESENTATION OF THE INVENTION

Against this background, the invention is based, among other things, on the object of specifying a locking bracket of the type mentioned at the beginning with a lower overall height, for which standard components can be used to a large extent.

This object is solved by a locking bracket according to patent claim 1.

The locking console has a carriage guided on two parallel axes, the two axes being fixable in the screw holes on the wing and connected to one another via an end plate, the carriage being provided with an internal thread for engaging a spindle which is designed as an extension of the square is, the carriage being supported against the wing by at least one helical compression spring arranged on each of the axles, and means for coupling the chain of a chain drive being provided on the carriage.

The locking console can be designed with only a small overall height compared to the sash, the overall height being essentially determined by the length of the spindle. Since the power transmission between the spindle and the internal thread acting as a spindle nut in the carriage is very effective, the spindle can be chosen to be relatively short with only a slight pitch. The use of at least two helical springs arranged parallel to one another is also provided for the low overall height. The leadership of the carriage on the two parallel axes is structurally simple.

Since the force required to unlock a fitting of a sash, at least in the closed state, or the corresponding torque, is usually greatest at the beginning of the unlocking process, the helical compression springs have a progressive spring characteristic. Such can be realized, among other things, by combining several helical compression springs.

With regard to the desired compact overall height, a favorable combination with a progressive spring characteristic results from two helical compression springs arranged one behind the other on the axles and having different lengths and preferably different strengths in the unloaded state. The lengths of the shorter, outer helical compression springs are to be selected in such a way that they are relieved when the carriage moves in the direction of the end plate before it reaches its stop position on the end plate.

The dependent claims relate to particularly useful developments of the invention.

Thus, the axes can be formed by sleeves through which screws are inserted, which can be screwed directly into the screw holes.

The screws can also be inserted through the end plate and press them against the sleeves with their screw heads when screwed in. The screws thus also serve to connect the end plate to the axles and the axles to one another via the end plate. The length of the sleeves determine the distance between the end plate and the wing.

The maximum height of the carriage needs to correspond to the length of the internal thread in the carriage that serves as the spindle nut. It is provided that the helical compression springs each engage in the carriage, the depth of engagement preferably being dimensioned such that they can be completely submerged therein by pressing them together.

If the locking bracket is to interact with a chain drive that is mounted on a frame of the sash, the chain drive chain must be guided past the side of the sash. To connect the end of the chain to the locking bracket, a certain distance usually has to be bridged, which can easily be done with at least one angle. Two brackets are preferably used for this purpose, between which the end link of the chain drive can be fastened easily and in such a way that the train or the pressure of the chain is transmitted centrally to the carriage.

Between a stop position on the wing and a stop position on the end plate, the carriage should be movable as far as possible solely by the action of the helical compression springs, unlocking the fitting when the wing is closed. In particular when using four helical compression springs, as is preferred, the spring force required for this can be applied.

When closing the sash under tensile load from the chain of a chain drive, the carriage should initially hit the end plate and the fitting should remain in its unlocked state due to the associated rotary position of the square until the sash is closed. This can also be done by appropriate dimensioning of the strength of the helical compression springs in relation to the for the closing of the wing 3 required traction can be ensured.

In their preferred configurations in particular, standard components that are usually available on the market and are therefore inexpensive can be used for the locking bracket, so that no parts that are complicated to manufacture and therefore expensive have to be specially manufactured. The spindle is particularly noteworthy here. Also, in most cases, no changes or adjustments need to be made to the sashes to be operated and their fittings. These are widely standardized, at least for window sashes. This means that the locking console can be mounted on a window sash instead of a standard window handle (also referred to as an olive), without the need for additional drilling. The locking console can also be used with practically any chain drive. To adapt to the dimensions of the respective wing, it is sufficient if necessary to use different coupling means for the chain of the respective chain drive.

character list

• 1 unter a) - e) ein Fenster mit einem an einem Rahmen angelenkten Fensterflügel sowie einem Kettenantrieb zum Öffnen und Schliessen des Fensterflügels in verschiedenen Ansichten jeweils im geöffneten Zustand;
• 2 unter a) - e) das Fenster von 1 in entsprechenden Ansichten jeweils im geschlossenen Zustand;
• 3 eine Verriegelungskonsole nach der Erfindung in perspektivischer Darstellung;
• 4 die Verriegelungskonsole in geschnittener Darstellung;
• 5 die Verriegelungskonsole in einer Stirnansicht; und
• 6 die Verriegelungskonsole in Explosionsdarstellung.

The invention will be explained in more detail below using the example of a window sash in connection with the drawing. Show it:

• 1 under a) - e) a window with a window sash hinged to a frame and a chain drive for opening and closing the window sash in different views, each in the open state;
• 2 under a) - e) the window from 1 in corresponding views each in the closed state;
• 3 a locking bracket according to the invention in a perspective view;
• 4 the locking console in section;
• 5 the locking console in an end view; and
• 6 the locking console in an exploded view.

WAYS TO CARRY OUT THE INVENTION

In 1 1 denotes a window shown under a) - e) in different views in the open state, with a window sash 3 articulated on a frame 2, a motor-driven chain drive 4, for example, for opening and closing the window sash 3 being attached to the frame 2. The chain of the chain drive 4 is denoted by 5 . The chain 5 is fastened to the casement 3 by means of a locking bracket 6 . This allows the window sash 3 to be locked and unlocked in the closed state of the window 1 relative to the frame 2 by actuating a fitting. 2 shows the window 1 in the closed state.

The fitting, which is arranged concealed inside the window sash 3, is actuated in the usual manner by a rotary movement by means of a square socket inserted therein. As is also usual with such fittings, there are screw holes on both sides of the insertion opening for the square, which are normally used for screwing on a window handle, but are used here for screwing the locking bracket 6 on the window sash 3 by means of screws. The locking bracket 6 can therefore be mounted on most window sashes without having to make any changes to them.

the 3 - 6 show a suitably designed locking bracket 6 according to the present invention.

The locking bracket 6 includes the mentioned square, which is denoted by 7 . A spindle 8 is connected to the square 7 axially in its extension or also in one piece with it. They are pushed through sleeves 10 and an end plate 11 . The sleeves 10 together with the screws 9 form axes for guiding a carriage 12. The carriage 12 is provided with an internal thread 13 for the spindle 8 to engage. First helical compression springs are denoted by 14 and second helical compression springs by 15, which are arranged on the sleeves 10, the second helical compression springs 15 engaging in the shorter, preferably also stronger, first helical compression springs 14. In the carriage 12 there are recesses 16 into which both helical compression springs 14 and 15 engage. With 17 angles are designated, which are screwed on the one hand on the carriage 12, and on the other hand with a screw 18, the end link of a chain such as the chain 5 of the chain drive 4 can be attached between them. The brackets 17 are each provided with several holes on their legs, which on the one hand allow their connection to the carriage 12 in different positions and on the other hand also the attachment of the chain 5 at different distances from the carriage 12, whereby the dimensions of different window sashes can be taken into account. Of each duplicate parts 9 - 17 is in the 2 - 5 provided only a part with the mentioned reference numerals.

If the locking bracket 6, as in 2 shown, screwed by means of the screws 9 on the closed window sash 3 and the chain 5 of the chain drive 4 is fully retracted, the carriage 12 is in the 2 and 3 shown position in the stop on the window sash 3, wherein the helical compression springs 14, 15 are fully compressed and pressed into the recesses 16 of the carriage 12. The carriage 12 is thus tensioned relative to the window sash 3, but is held in this position by the chain 5 of the chain drive 4.

To unlock and open the window sash 3, the chain 5 of the chain drive 4 is extended. Initially, only the carriage 12, on which the chain 5 engages, is pushed away from the window sash 3 by the tensioned helical compression springs 14, 15 along the axes formed by the sleeves 10. The movement of the carriage 12 is converted via its coupling with the spindle 8 into a rotary movement of the spindle 8 and with it the square 7, which is inserted into the insertion opening of the fitting and actuates it by its rotary movement.

The displacement path of the carriage 12 along the sleeves 10 is limited by the end plate 11 and is selected in coordination with the pitch of the spindle 8 in such a way that there is a sufficient angle of rotation of, for example, 90° for the complete unlocking of the fitting.

The strength of the helical compression springs 14, 15 should be dimensioned such that the carriage 12 can be moved between the window sash 3 and the end plate 11, unlocking the fitting when the window sash is closed, as far as possible solely through the action of the helical compression springs 14, 15 in order to prevent the fitting from getting caught to avoid when unlocking. This could happen under certain circumstances if the chain drive 4 also presses in this phase. Extending the chain 5 not too quickly can also be helpful here.

The fact that, as a rule, a greater force or a higher torque is required at the start of unlocking is taken into account by the use of the two helical compression springs 14, 15. At the beginning, the forces of both helical compression springs 14, 15 add up, while after relaxation of the shorter first helical compression springs 14, only the longer, second helical compression springs 15 act.

As soon as the fitting is unlocked and the carriage 12 strikes the end plate 11, the chain drive 4 can open the window sash 3 as the chain 5 is extended further, if necessary by exerting pressure.

To close the window sash 3, the chain 5 of the chain drive 4 is retracted. The carriage 12 initially remained in abutment on the end plate and the fitting remained in its unlocked state due to the associated rotational position of the square. This can be ensured by suitable dimensioning of the strength of the second helical compression springs 15 in relation to the tensile force required for closing the window sash 3 . As soon as the window sash 3 is closed, the carriage 12 is moved back by the chain hoist along the two sleeves 10 under compression of the helical compression springs 14, 15 until it strikes the window sash 3 again. The movement of the carriage 12 is again converted via its coupling to the spindle 8 into a rotary movement of the spindle 8 and with it the square 7, which actuates the fitting by its rotary movement, this time for locking.

As soon as the carriage 12 hits the window sash 3, the chain 5 cannot be retracted any further. Since the tractive force exerted by the chain drive 4 via the chain 5 rises steeply at this moment, this can be used for a so-called load disconnection of the drive motor of the chain drive 4 .

Reference List

1

window

2

frame

3

casement

4

chain drive

5

Chain

6

locking console

7

square

8th

spindle

9

screws

10

Pods

11

endplate

12

Sleds

13

inner thread

14

first helical compression springs

15

second helical compression springs

16

recesses in the slide

17

angle

18

screw

Claims (7)

Locking console (6) for locking and unlocking a wing (3) in connection with a chain drive (4), the wing (3) being provided with a fitting which can be actuated by a rotary movement using a square head (7) inserted therein and in which there is a screw hole on each side of the insertion opening for the square (7), and the locking bracket (6) has a square (7) and at least one helical compression spring (14, 15), the locking bracket (6) having one to two carriage (12) guided by parallel axes, the two axes being fixable in the screw holes on the wing (3) and being connected to one another via an end plate (11), the carriage (12) having an internal thread (13) for engaging a spindle (8), which is designed as an extension of the square (7), the carriage (12) having at least one helical compression spring (14, 15) arranged on each of the axles against the wings l (3) is supported, and means for coupling the chain (5) of a chain drive (4) are provided on the carriage (12), characterized in that in the unloaded state two helical compression springs (14, 15) are arranged one inside the other, the shorter, outer helical compression springs (14) being relieved during the movement of the carriage (12) in the direction of the end plate (11) before it reaches its stop position on the end plate (11), the helical compression springs (14, 15) have a progressive spring characteristic and/or a combined spring characteristic due to the combination of several helical compression springs (14, 15), with recesses (16) being present in the carriage (12) into which both helical compression springs (14, 15) engage in such a way that the Helical springs (14, 15) can be pressed into the recesses (16) of the carriage (12) in a compressed state. Locking console (6) after claim 1 , characterized in that the axes are formed by sleeves (10) through which screws (9) are inserted, which can be screwed into the screw holes. Locking console (6) after claim 2 , characterized in that the screws (9) are also inserted through the end plate (11) and press them against the sleeves (10) with their screw heads when screwed in. Locking bracket (6) according to one of Claims 1 - 3 , characterized in that the helical compression springs (14, 15) each engage in the carriage (12), the depth of engagement being dimensioned such that they can be completely submerged therein by compression. Locking bracket (6) according to one of Claims 1 - 4 , characterized in that the means for coupling the chain (5) of a chain drive (4) to the carriage (12) comprise at least one, preferably two brackets (17). Locking bracket (6) according to one of Claims 1 - 5 , characterized in that the carriage (12) can be moved between a stop position on the wing (3) and a stop position on the end plate (11) with unlocking of the fitting when the wing (3) is closed by the action of the helical compression springs (14, 15). Locking bracket (6) according to one of Claims 1 - 6 , characterized in that when the leaf (3) is closed, the carriage (12) remains in a stop position on the end plate (11) under tensile loading by the chain (5) of a chain drive (4) due to the action of the helical compression springs (14, 15). .

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