EP0044520B2 - Actuator for a door or window - Google Patents

Abstract

A control device is disclosed for selectively displacing two drive rod drivers which are coupled to drive rods of a window or door. The device includes a housing having a guide path defined therein for slidably receiving two drivers. The handle includes a turning member which is directly engaged with one driver and the device includes a clutch which is selectively engageable or disengageable between the two drivers so that, with rotation of the handle member, either both or one of the drivers may be moved along the guide path in the housing.

Description

The invention relates to a transmission for displacing two drive rods of a window or door fitting by means of a rotatable handle or the like, wherein a rotary member which can be actuated by the handle moves the drive rods and one drive rod is constantly connected to the rotary member while the other is under Interposition of a releasable coupling device, which is designed as a pivotable single-arm lever and has a disengageable coupling element, can be connected to the rotary member.

When the coupling device is engaged, turning the handle causes the displacement of both drive rods, while after disengaging, only one drive rod can still be moved using the handle. As a result, this gear unit can be used wherever a window or door element is to be placed in either two operating positions. Accordingly, it can be, for example, a turn-tilt or a slide-tilt wing. Certain elements of the window or door fitting of such a wing are to be actuated via each of the two connecting rods and, depending on the position of the coupling device, either all or only some of the elements of this fitting are switched over when the handle is turned. If the rotary element is actuated when the clutch is engaged, this results in a displacement of the connecting rods in the same sense, i.e. both go up in one direction of rotation and both go down in the opposite direction of rotation.

A transmission of this type has become known from DE-B 1 559 824. The disengageable coupling element, which is designed as a pivotably mounted one-armed lever, has a driver nose which projects in the direction of the engaging pivoting movement and which engages in a correspondingly shaped recess in the one drive rod when the coupling is engaged or closed. In the other drive rod, a pin-shaped projection protrudes in the same sense, the latter and the corresponding recess of the other drive rod forming the pivot bearing. This requires not only special recesses in the two drive rods, but also an exact assignment of the two drive rods seen in the longitudinal direction. Further recesses are required in that the rotary member is coupled directly to one drive rod and this positive connection is only possible through the other drive rod. The latter requires a longitudinal slot corresponding to the drive rod stroke, while the one drive rod requires a plurality of recesses for the teeth of the rotary member designed as a partial pinion.

Accordingly, both the direct coupling of the two drive rods via the pivotably mounted coupling member and the direct connection to the rotary member require special training of both drive rods. On the other hand, however, it is known that special shapes in fitting construction lead to an increase in manufacturing costs and this also excludes the use of so-called yard goods.

A fitting has become known from FR-A 1 239858, in which a special shape of the drive rods can be dispensed with, because it is sufficient if each of the two drive rods has only one hole for inserting a pin of a sliding piece mounted in the transmission housing, but it belongs this gearbox of another type. On the one hand, the two drive rods move in opposite directions when actuated, and on the other hand there is no clutch for coupling and uncoupling one of the two drive rods.

The task is to develop the transmission of the type described in the introduction in such a way that it can be connected to the drive rods in a particularly simple manner.

To achieve this object, it is proposed according to the invention that in a transmission according to the preamble of claim 1, each drive rod is connected to a slidably mounted slide in the transmission housing, the first of which is in drive connection with the rotary member and which each carry a coupling element, the disengageable one , As a one-armed lever coupling element is pivotally mounted on one of the sliders. By dispensing with the direct connection of the two drive rods via the pivotably mounted coupling element and the direct coupling of the rotary member to the one drive rod, it is possible to design particularly simple drive rods which only require a single hole for coupling, which is not only the required simple connection enables this gearbox with the drive rods, but also a simple and inexpensive drive rod training. So-called yard goods can be used when using the usual perforated drive rods. By using two sliders, the coupling can be moved away from the drive rod into the gearbox.

In a further development of the invention, it is proposed that the disengageable coupling element is mounted on the second slide and can be pivoted against the force of a return spring. If one acts on this coupling element, for example with the aid of a suitable actuating member, in such a way that it is pivoted into an effective position against the force of its return spring, this leads to an indirect coupling of the uncouplable drive rod, provided that this is not the case disengageable coupling element is in the correct assignment for coupling. In addition, appropriate measures must be taken to ensure that the return spring disengages the clutch device only when this is desired. This is through appropriate training of the actuator for the disengageable coupling element to be easily achieved.

In a further embodiment of the invention it is provided that the disengageable coupling element, in particular at its free end, carries at least one latching element which, when in the engaged position, engages in the coupling element of the first sliding piece which has a latching receptacle. Locking element and locking receptacle must be designed so that the locking, i.e. coupling and uncoupling is possible with a simple swivel movement. On the other hand, this latching must be such that it cannot be released when both drive rods are moved.

Here, a further variant of the invention provides that the sliders are slidably mounted in one and the same housing guide and bear against one another when the clutch is engaged. To take the detachable slider with you, it is not necessary either during the forward or backward movement that the sliders rest against each other in the two sliding positions when the clutch is engaged, but the problem leads to a very compact design with the smallest space requirement seen in the sliding direction. When the clutch is engaged, the two sliders rest against each other in every possible sliding position. With the clutch disengaged, this is only the case in a sliding end position. On the other hand, this design has the advantage that, in the event of incorrect operation, the drive rod uncoupled before resetting can be reset using the sliders.

As explained, the disengageable coupling element is pivoted into the engagement position against the force of a return spring. Then it is relatively easy to hold down this coupling element when the drive rods are stationary with the aid of the actuating member, but the disengageable coupling element moves away from its actuating member when the coupling rods are moved over the handle. In order to prevent disengagement of the clutch during and at the end of the displacement movement, a preferred embodiment of the invention provides that the disengageable clutch element can be displaced in its engaged position along a hold-down device, which is formed in particular by a housing attachment or the like. Already after a short longitudinal displacement of the disengageable coupling element, the latter comes under the housing attachment, for example a rib, in the area of which the disengageable coupling element can remain during its entire displacement. Only when you push it back into its starting position does it come free from the hold-down device and, if this is not prevented by its actuating element, it can be pivoted back into its starting position by the return spring.

In a further development of the invention, a transmission whose disengageable coupling element can be pivoted at least into its engaged position by means of a particularly rotatable actuating member, wherein the actuating member has an eccentric to its axis of rotation, is characterized in that between the pressure member and the disengageable coupling element and / or a resiliently bendable transmission element is connected. The return of the lockable coupling element takes care of the return spring, so that one does not need the help of this actuator. Of course, this does not rule out that the resetting can still be carried out or at least supported via the rotatable actuating element or another device. The bendable transmission member makes it possible in a simple manner to convert the rotary movement of the actuating member into a pivoting movement, with the aid of which the coupling element can be brought into its engaged position. The pivoting movement of the transmission member is achieved in that the pressure piece of the actuating member moves more or less strongly from the articulation axis of the bendable transmission member during the rotation of the latter and thus reinforces or weakens its inclined position. For reasons of space on the one hand and also to save a separate return spring for the transmission element, it is particularly advantageous that the transmission element is designed in the manner of a leaf spring, the free end of which can be pivoted approximately parallel to the disengageable coupling element and abuts or can be applied to the latter, the transmission element with the clutch element disengaged at least largely free of tension and its end remote from the disengageable clutch element is held on the housing. In order to effect the greatest possible pivoting of the coupling element with a relatively small, in particular an angle of 90 degrees, rotary motion of the actuating element, it is proposed in a further embodiment of the invention that the pressure piece in its rotational position facing the fixed end of the transmission member into a locking recess or - recess of the transmission member engages. The latching recess od recess and the pressure piece expediently have the same or similar cross-sectional shapes. In particular, it is provided that the locking recess is a round opening and the pressure piece is a cone or truncated cone. Because of its inclined lateral surface, the cone or truncated cone easily runs out of or into the detent recess, preference being given to the truncated cone with regard to the further rotation. This is completely sufficient to effect the pivoting of the transmission link alone and sufficiently. This means that the difference in distance between the pressure piece and the articulation axis of the transmission element in its two rotational end positions is not important, or at least is not critical, so that you are not bound constructively. In particular, it is possible to move the pressure piece over a comparatively small radius, that is to say to make the gearbox very compact in this area.

Another embodiment of the invention provides that the first slide piece has at least one wedge-like control element at its end directed towards the second slide piece, which forms a reset device for the disengageable coupling element with the associated latching member. This reset device comes into force when either the return spring fails due to a spring break or when the disengageable coupling element has been pivoted into its engaged position without the other coupling element being in a position suitable for coupling, i.e. the starting position of the gearbox. If, in such a case, the slide piece which is directly connected to the rotary member is reset, the coupling element is returned to its disengaged position at least as far and until the two slide pieces again assume the mutual position provided for engaging the clutch to have. So if nothing is changed on the actuating member for the coupling device, the coupling takes place automatically at the end of the return movement of the slider directly coupled to the rotary member. Advantageously, the rear end of each control element can be used to form the locking receptacle. In this way, the transmission is particularly safe to use.

Another variant of the invention provides that the return spring of the disengageable coupling element is designed as a leaf spring, one end of which is held in a particularly clamping manner on this coupling element and the end which is bent out of the plane of the coupling element is supported on the housing, preferably on a removable housing base. This also leads to a compact, less prone to failure and inexpensive to manufacture.

For the same reason, it is also advantageous that the first slider has a control groove extending transversely to its direction of displacement, in which an eccentric, in particular rotatably mounted control pin of the rotary member engages, and that the two sliders are of identical design. Above all, the latter feature contributes to inexpensive production and simple storage due to the doubling of the number of pieces.

Finally, according to a further embodiment of the invention, it is provided that each slider carries a mandrel-like driver, which extends perpendicular to its direction of displacement, for engaging in a driver receptacle of the associated drive rod. The drive rods can therefore be connected to this transmission in a particularly simple manner by simply plugging them onto the driver provided in each case.

• Fig. 1 eine Draufsicht auf das Getriebe.
• Fig. 2 einen Schnitt gemäss der Linie 11-11 der Fig. 1.
• Fig. 3 eine Ansicht des Getriebes in Pfeilrichtung A der Fig. 2,
• Fig. 4 eine der Fig. 2 entsprechende Darstellung in einer ersten Umschaltstellung,
• Fig. 5 eine der Fig. 2 entsprechende Darstellung in einer zweiten Umschaltstellung.

In the drawing, an embodiment of the invention is shown. Show it:

• Fig. 1 is a plan view of the transmission.
• 2 shows a section along the line 11-11 of FIG. 1st
• 3 is a view of the transmission in the direction of arrow A of FIG. 2,
• 4 shows a representation corresponding to FIG. 2 in a first switching position,
• Fig. 5 is a representation corresponding to Fig. 2 in a second switch position.

In a shell-like housing 1, the removable part of which is designed as a cover 2 - this cover is omitted in FIG. 3 - a handle 3 is rotatably mounted, as is usually the case for lift-slide doors, turn-tilt doors or windows. Like. Used. The inner end of its articulated end 4 is rotatably connected to a rotary member 5. It consists of a single-armed lever with a control pin 6, which is attached to the free end of the lever and in particular can be freely rotated about its longitudinal axis and is designed in the manner of a sliding block and engages in a control groove 7 of a first sliding piece 8. If the handle 1 is rotated from the position shown in FIG. 2 by 180 degrees into the rotary position according to FIG. 4, the device consisting of the control groove 7 and the control pin 6 causes the first coupling piece 8 to be displaced in the direction of the arrow 9. In the installed state, a mandrel-like driver 10 of the first slide 8 is coupled to a drive rod, not shown, so that this is also displaced in the direction of arrow 9 when the handle 3 is rotated 180 degrees. The rotary movement is e.g. limited by the fact that either one of the two longitudinal flanks of the rotary member 5 comes to rest on the inner surface 11 of the housing 1.

The inner surface 11 and a parallel inner surface 12 of the housing 1 also form a guide for the first slider 8 and a second slider 13. Both are of identical design and dimensioned such that they are in the one displacement end position on the transverse edge 14 and in the other displacement end position rest on the transverse edge 15 of the housing 1. In addition, they can be in direct contact with one another in the two displacement end positions, as shown in FIGS. 3 and 5. However, this is not fundamentally the case, as shown in FIG. 4, rather the first sliding piece 8 can also be displaced in the direction of arrow 9 without the second coupling piece 13, as a result of which these two sliding pieces or their drivers 10 and 16 have a maximum distance which in the case of the positions shown in FIGS. 2 and 5 is a minimum, preferably zero. The driver 16 is coupled to a second drive rod, also not shown. Whether the second coupling piece 13, the movement of the the first coupling piece in the direction of arrow 9 or not depends exclusively on whether a coupling of a coupling device 17 connected between these two parts is engaged or disengaged. However, it is clear from the above statements that these two drive rods are always moved simultaneously and equally quickly in the direction of arrow 9 or in the opposite direction when the clutch is engaged when the handle is moved from one rotary position to the other.

The second slider 13 carries a disengageable coupling element 18 which interacts with a coupling element 19 of the first coupling piece 8. Owing to a bow-shaped return spring 20, the free end of which protrudes from the plane of the disengageable coupling element 18 is supported on the inner surface of the cover 2, the disengageable coupling element 18 normally assumes the tilted position shown in FIG. 2. In addition, it has an integrally formed axis of rotation 22, the peg-shaped ends of which engage in a bearing half-shell 23 or 24 of the second slide 13. Otherwise, the disengageable coupling element 18 can be pivoted between the two legs 25 and 26 or 27 and 28 of the second slide 13 or the first slide 8 in the direction of the double arrow 29. This also means that the two coupling pieces 8 and 13 are inserted in the guide of the housing 1 in mirror image.

At its end facing away from the axis of rotation 22, the disengageable coupling element 18 is T-shaped. In its rotational position shown in FIG. 5, the free T-leg ends engage in a transverse slot 30 of the first slide piece 8, which forms the fixed coupling element 19, if one disregards the displacement movement in the direction of the double arrow 31. Accordingly, the free T-leg ends are latching members 32 and the two ends of the transverse slot 30 are latching receptacles 33.

Because the return spring 20 holds the disengageable coupling element 18 in a plane inclined with respect to the displacement plane, the latching members 32 normally do not engage in the latching receptacles 33. The engagement of the clutch device 17 is achieved with the aid of a rotatable actuating member 34, which is preferably designed as a toggle and can be rotated in particular by 90 degrees. Eccentrically to its axis of rotation 35 (FIG. 5), it carries a pressure piece 36, which cooperates with a locking recess 37 of a transmission element 38. The transmission member 38 is an element which is preferably designed as a leaf spring and whose end 39 facing the transverse edge 15 is fastened, for example riveted, to the housing. The latching recess 37 is preferably a circular opening, and the pressure piece 36 has the shape of a truncated cone. If the actuating member 34 is rotated from the position shown in FIG. 4 by 90 degrees into the position shown in FIG. 5, the pressure piece 36 emerges from the latching recess 37 and rests on the flat side of the transmission member 38 which faces towards it. This consequently bulges out under simultaneous elastic deformation, and its free end presses down the free end of the disengageable coupling element 18 in the direction of arrow 40 against the resistance of the return spring 20. As a result, the clutch of the clutch device 17 is engaged. If the handle 3 is now transferred from the position shown in FIG. 2 to that shown in FIG. 5, in contrast to FIG. 4, the second slide piece 13 is taken along in the direction of the arrow 9, as a result of which both drive rods then participate in this movement . Because the disengageable clutch element 18 gradually moves away from the free end of the transmission member 38 during this displacement, one must take appropriate measures to ensure that the force of the return spring 20 cannot have the effect of disengaging the clutch. For this purpose, the housing has a rib-shaped housing attachment, which serves as a hold-down 41 for the pivoted coupling element 18. The latter occurs after a short displacement movement of the displaceable parts in the direction of arrow 9 under this hold-down device 41 and remains underneath it either until the displacement end position has been reached or at least until another part of the transmission causes the hold-down device. In the exemplary embodiment, the second variant is provided, and it can be seen, for example, in FIG. 5 that in the “upper” displacement end position, the rotary member 5 prevents the disengageable coupling element 18 from pivoting back against the arrow 40 and thus preventing the clutch from opening.

The first slider 8 or because of the identical design of the sliders 8 and 13 both coupling pieces carry two wedge-like control elements 42 which are arranged at a lateral distance from one another and which, as will be explained below, can interact with the peg-shaped latching members 32 of the disengageable coupling element 18 and their lateral distance consequently corresponds to that of the two latching members 32. In addition, it is pointed out that the other end 43 of the bow-shaped return spring 20 is held clamped in a groove-shaped receptacle of the disengageable coupling element 18.

The transmission described above is not only of a particularly simple design, but is also very robust and reliable insofar as incorrect operations in any position of the handle 3 and the rotatable actuating member 34 are excluded or harmless. If one starts from the initial position of the handle 3 and the actuating member 34 shown in FIG. 2, a rotation of the handle 3 by 180 degrees - or possibly also a different, in particular smaller angle of rotation - displaces the driver 10 from that in FIG. 2 shown in the position shown in FIG. 4. Since the coupling device 17 in a is ineffective position, the driver 16 can not take part in this displacement movement, ie there is only a displacement of the drive rod coupled to the driver 10, while the drive rod coupled to the driver 16 maintains its position unchanged. If, before the aforementioned adjustment of the handle 3, the actuating member 34 is rotated by its intended rotation angle of preferably 90 degrees, the coupling of the coupling device 17 is engaged, and now both drive rods move back and forth with one another.

If, starting from the position shown in FIG. 5, the rotatable actuating member 34 is turned back into its starting position according to FIG. 2 and subsequently the handle 3 is again brought into the rotary position shown in FIG. 2, this is therefore without disadvantageous effect , because the elimination of the spring force of the transmission element 38 and the force of the return spring 20 cannot have an effect until the hold-down device 41 releases the disengageable coupling element 18. However, this is only the case when the starting position is reached again.

Furthermore, it is possible, starting from the position of the two rotary handles or sliding pieces 8 and 13 shown in FIG. 4, to bring the rotatable actuating member 34 into the position according to FIG. 5. If the handle 3 is then turned back into the starting position according to FIG. 2, the two control elements 42 press the second slide 13 from the position shown in FIG. 5 into the position according to FIG. 2, namely against the resistance of the spring force of the transmission member 38. When the latching members 32 have reached the level of the coupling elements 29, the spring force of the transmission member 38 can have an effect because the control elements 42 have now been moved completely past the latching members 32. From the foregoing, it is readily apparent that the rotatable actuator 34 can be rotated even in any rotational position of the handle 3 without adversely affecting the actuation of the drive rods or the parts of the transmission.

Claims (14)

1. Gearedtransmissionfordisplacingtwooper- ating rods of a window or door fitting by means of a rotatable handle (3) or the like, a rotating member (5) adapted to be actuated by the handle moving the operating rods, one operating rod being constantly connected to the rotary member (5) while the other, by interposition of a separable coupling device (17) which comprises a disengageable coupling element constructed as a pivotally mounted single-armed lever, is adapted for connection to the rotary member (5), characterized in that each operating rod is connected to a sliding member (8, 13) mounted displaceably in a gear housing (1) and of which the first (8) is in a driving connection with the rotary member while each comprises a coupling element (18, 19), the disengageable coupling element (18) which is constructed as a single-armed lever being mounted to pivot on one of the sliding members (8, 13).

2. Geared transmission according to Claim 1, characterized in that the disengageable coupling element (18) is mounted on the second sliding member (13) and is pivotable against the force of a restoring spring (20).

3. Geared transmission according to Claim 1 or 2, characterized in that the disengageable coupling element (18), particularly at its free end, carries at least one interlocking member (32) which, in the engaged position, engages that coupling element (19) of the first sliding member (8) which is constructed as a housing member (33) for an interengaging member.

4. Geared transmission according to Claim 2 or 3, characterized in that the sliding members (8, 13) are mounted to slide in one and the same housing guide (11, 12) and bear on one another when the coupling is engaged.

5. Geared transmission according to one or more of the preceding Claims, characterized in that the disengageable coupling element (18), in its engaged position, is displaceable along a depressing means (41) which is formed in particular by a projection of the housing or the like.

6. Geared transmission according to one or more of Claims 1 to 5, of which the disengageable coupling element (18) can be pivoted by means of an in particular rotatable actuating means (34) at least into its engaged position, the actuating means (34) comprising a thrust piece (36) located eccentrically of its axis of rotation, characterized in that between the thrust piece and the disengageable coupling element (18) there is a pivotally and/or springingly flexible transmission member (38).

7. Gear mechanism according to Claim 6, characterized in that the transmission member (38) is constructed in the manner of a leaf spring, the free end of which, pivotable substantially parallel with the disengageable coupling element (18), bears on or can be applied against the latter, the transmission member (38), when the coupling element (18) is disengaged, being held at least substantially tension-free while its end remote from the disengageable coupling element is held on the housing (1).

8. Gear mechanism according to Claim 7, characterized in that, in its rotary position in which it is towards the gripped end of the transmission member (38), the thrust piece (36) engages into an arresting depression or recess (37) in the transmission member (38).

9. Gear mechanism according to Claim 8, characterized in that the arresting depression (37) is a round hole while the thrust piece (36) is a cone or truncated cone.

10. Gear mechanism according to Claim 8 or 9, characterized in that the first slide member (8) has at its end which is towards the second coupling piece (13) at least one wedge-like control element (42) which, with the associated catch member (32), forms a restoring device for the disengageable coupling element (18).

11. Gear mechanism according to one or more of Claims 1 to 10, characterized in that the restoring spring (20) of the disengageable coupling element (18) is constructed as a leaf spring, one end of which is held particularly in a clamping fashion on this coupling element while its end which is bent out of the plane of the coupling element is braced on the housing (1), preferably on a removable housing cover (2).

12. Gear mechanism according to one or more of Claims 1 to 11, characterized in that the first slide member (8) has, extending transversely of its direction of displacement (31), a control groove (7) into which engages an eccentric, particularly a rotatably mounted control stud (6) of the rotary member (5).

13. Gear mechanism according to one or more of Claims 1 to 12, characterized in that the two slide members (8, 13) are identical in construction.

14. Gear mechanism according to Claim 13, characterized in that each slide member (8, 13) has, extending at a right angle to its direction of displacement (31) a mandrelshaped drive member (16, 10) for engaging into a drive member housing on the associated drive rod.

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