EP1121501A1 - Window and/or door fitting - Google Patents

Abstract

The invention relates to a handle (10) which is mounted on a stop body (20) in an axially fixed rotational manner. Said handle has a polygon (30) which is torsionally rigid in a handle neck (12) which is provided for actuating a closing mechanism. Two driving elements (15, 35) which can move in relation to one another can be coupled directly or by means of coupling elements (36, 40, 42) with positive or non-positive fit between adjacent surfaces (17, 37). Said driving elements are coupled in such a way that a transmission of torque from the handle (10) to the polygon (30) can be effected, whereas said transmission can be blocked from the polygon to the handle (10) by displacing at least one coupling element (36) in the direction of the application of force. A main part of a polygonal driving element (35) can be concentrically enclosed by the handle driving element (15) having fins (52) which comprise push surfaces (19) and which are situated on two shells. Said fins drive, e.g. spring-loaded roll pins (36) which are arranged in pairs and which are retained in a wedge-shaped delimited zone (55). Angular areas of indentations (31) of the polygonal driving element (35) act upon the roll pins (36). Middle parts (50) of the handle driving element (15) can guide a pressure spring (38) which outwardly applies force to locking balls (47) to which recesses (27) of the stop body (20) that are arranged at the edge delimitation (24; 44) are allocated.

Description

 Window and / or door fittings

description

The invention relates to a window and / or door fitting according to the preamble of claim 1 and according to claim 24.

Fittings in the form of handles for opening and closing room closures, i.e. Windows and doors are often designed as rotary handles, or the like with slings such as rosettes, base plates. be attached to a window frame or door leaf in order to use a driver pin, e.g. a square to actuate an associated locking mechanism.

To ensure that this does not happen by unauthorized persons, various security devices have been developed, including push-button locks and so-called child locks. For example, DE 295 18 723 U1 describes a fitting with a slide located on the outside of the handle. This must be moved to the side in order to be able to exert an axial force on the spring-loaded handle neck, which can thereby be coupled to a stop bushing which leads the square; the handle can only be pivoted after it has snapped into place.

With other constructions, the handles can be fixed in selected positions, for example in 90 ° positions. To release the rotary movement of a handle locked in this way, an assigned organ must first be actuated. However, if a handle is not initially in a given angular position, no locking can take place and the handle can be moved - also by external influences. Burglary methods are based on this. In the case of turn-tilt fittings with a gearbox that is used to convert the rotary actuation into a linear movement of a push rod, the locking can be deactivated by drilling the window profile from the outside and using a tool to move the linkage through the hole created. A window can also be opened if the frame is drilled from the outside at the level of the square, on which a tool can then grip. In both cases the square can be turned and the fitting can be unlocked as a result.

A remedy has been tried with the widespread lockable window handles, which cannot be moved when locked. The user must take care to lock the handle again and again. This generally requires a key that must not be freely accessible to third parties; however, the difficult access to the key interferes with the use by authorized persons, so that for convenience they often do not close the window.

Common disadvantages of the known devices are also that the window handles are subject to certain design restrictions when used with securing means e.g. wants to equip the type mentioned. The users are also forced to actually operate the corresponding elements, and in some cases in a direction that differs from the usual way of operating.

It is an important object of the invention to overcome these and other disadvantages of the prior art and to provide an improved handle which provides considerable resistance to external influences, but which can be actuated easily inside the room. In addition to a clear structure, low-cost production and assembly are also sought. Greater freedom with regard to design, use and / or movement sequences should also be achieved with economic means.

This object is achieved by a window and / or door fitting for actuating a locking mechanism, with a handle in the form of at least one handle, which is mounted axially fixed-rotatable on or in a stop body by means of a handle neck, which is attached to a flat support, in particular a room closure -Element such as door leaf, window frame or the like. can be fastened, and with a polygon engaging or penetrating into the stop body, which for actuating the Locking mechanism is rotationally rigidly connected to the handle (10), a coupling arrangement being provided according to the invention between the handle and the polygon, with which a torque transmission from the handle to the polygon can be effected, but can be blocked from the polygon to the handle. So you have a turning handle in the manner of a mechanical diode, which depending on the direction of actuation either allows the usual movement of the handle or prevents it in reverse. As a result, a significant increase in security can be achieved in a very simple manner. The overall design effort is low, so that the arrangement consisting of a few components can be easily manufactured and assembled.

With a fitting in the form of at least one handle with a z. B. formed as a slider handle part which is axially fixed-transverse movable on or in a housing, stop body, or the like on a flat carrier, in particular a space-closing element such as door leaf, window frame. can be fastened, with an output element arranged transversely to the stop body and rigidly connected to the handle for actuating a locking mechanism, the invention further provides that a coupling arrangement is present between the handle and the output element, depending on whether a force application on the handle or takes place on the output element, a handle movement can be released or blocked. It can be seen that there is no restriction to rotating elements because such an arrangement is generally displaceable and in particular also linearly displaceable.

Advantageous embodiments of the invention are the subject of claims 2 to 23 and 25 to 27.

Further features, details and advantages of the invention emerge from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:

1 is a bottom view of the stop body of a fitting,

2 shows a comparable bottom view in another embodiment,

3 is a bottom view of yet another embodiment,

4 is an oblique view, partly in section, of a turning handle,

5a, 5b each an exploded oblique view of the components of the

5 from above or below, 6a to 6c each a bottom view of a further embodiment, namely in the idle state and in two different operating states,

7a to 7c each a bottom view of another embodiment of a fitting in the idle state and in two different operating states,

8 shows a separate illustration of a fitting recess in the stop body,

9 is a developed view of the inner circumference of the fitting recess of FIG. 8,

10a to 10b each an exploded oblique view of the components of the window handle of Fig. 7a to 7c and

11a to 11c each show a schematic side view of a sliding mechanism for handling.

1 shows the underside of a stop body 20 which can be struck against a window or door surface (not shown) by means of pierced cams 23. A square 30 sits centrally, which can be rotated about the same axis as a handle (not shown here), which is connected to a handle driver 15 in a rotationally fixed manner. With the square 30 a square driver 35 is rotatably connected, the main part of which is concentrically enclosed by the handle driver 15. The handle driver 15 and the square driver 35 are components of a coupling arrangement K with which a torque transmission from the handle to the polygon 30 can be effected, but can be blocked from the polygon 30 to the handle.

The square driver 35 extends with a projection 33 to an inner wall 44 of a cylindrical fitting recess 24 in the bottom side of the stop body 20. The main part of a leaf spring 40 lies against the inner wall 44 and thereby surrounds the handle driver 15. With a predetermined small distance from its ends , The contact surfaces 17 form, the spring 40 is provided with angle ends 42 which are adapted to the shape of the projection 33 of the square driver 35 and lie in the drawn rest position between the contact surface 17 of the handle driver 15 and a contact surface 37 of the square driver 35.

If the handle is rotated together with the handle driver 15, then a contact surface 17 meets a spring end 42. This pulls it a little, so that a reduction in the spring diameter occurs. The previously accurate spring 40 can now easily move along the inner wall 44. Upon further rotation of the handle driver 15 said spring end 42 is pushed onto the contact surface 37 of the square driver 35, whereby the rotary movement is transmitted to the square via the projection 33 and the driver 35. The leaf spring 40 thus serves as a coupling member, ie it couples the handle driver 15 and the polygon driver 35 in such a way that a torque acting on the handle is transmitted to the polygon 30 as long as the contact surface 17 pushes the relevant spring end 42 and thus the polygon driver 35. The handle can be turned freely.

If, however, primarily torque is applied to the square 30, a contact surface 37 of the driver projection 33 comes into contact with the associated angular end 42 of the spring 40. The latter is thereby expanded in diameter, even with minimal compression of the associated spring end 42. As a result, the spring 40 jams against the inner wall 44 with the result that the rotary movement is immediately and completely braked.

It can be seen that the handle driver 15, the spring 40 and the square driver 35 to the longitudinal center L of the stop body 20 are constructed and arranged symmetrically, so that functional independence from the direction of rotation is ensured. It is also important to have a predetermined rotational angle play B between the two drivers 15 and 35, which is determined by the distances between the contact surfaces 17 and 37, which must be greater than the thickness of the spring element 42 located therebetween. Thanks to this dimensioning, a driver (in the frame of the angle of play B) are rotated without the rotational movement being transmitted to the other driver, but an action on the spring 40 as a coupling element takes place. This jams by friction - starting from the drawn rest position - in one direction and releases in the opposite direction.

Another embodiment of a self-locking mechanism for a rotary handle can be seen in FIG. 2. Again, the two drivers 35 and 15 of the coupling arrangement K are rotatably mounted about the axis concentric with the square pin 30. In the circumferential direction between them there are coupling links 36 in the form of two pairs of coupling elements, for example in the form of rolling pins, which are each pressed apart by a compression spring 38. The two-shell handle driver 15 has on each shell a central part 50 with curved wings 52, the circumferential ends of which have or form thrust surfaces 19. With- Participants 15, 35 also have engagement elements, which are designed as recess 51 and associated indentation 56 and are arranged with a rotation angle play B to one another in such a way that, in the rest state shown, the contact surfaces 17 and 37 are spaced apart. The springs 38 between the rolling pins 36 or cylindrical rollers are guided along webs 46, along the inner wall 44 of the fitting recess 24. The webs 46 arranged symmetrically between the end faces 19 of the arcuate wings 52 of the handle driver 15 prevent the springs 38 from rubbing outside during the rotational movements, ie on the fitting recess 24 or the inner wall 44; this contributes to the ease of movement of the window handle.

As shown in FIG. 2, the shapes of the drivers 15, 35 permit the mutual transmission of rotary movements without coupling elements located between them. In cooperation with wedge surfaces 39 on the square driver 35, however, the rotation angle play B present between the surfaces 17, 37 determines the function explained below.

The coupling members 36 are located in an intermediate space 55 of approximately trapezoidal basic shape, which is delimited by the cylindrical inner wall 44, the thrust surfaces 19 and the wedge surface 39 and widens towards the spring 38. The latter causes each of the two rolling pins 36 of each pair to be pushed as far as possible into this wedge-shaped space 55.

If you move the handle and thus the handle driver 15, this is possible until the distance between the contact surfaces 17, 37 is bridged, initially without transmitting a rotary movement to the square driver 35. The thrust surface 19 of the arcuate wing 52 rather presses against the force of the spring 38 on the adjacent roller pin 36 and presses it tangentially to the annular surface 44 out of the wedge-shaped space 55. The coupling member 36 is freely movable in the widening zone 55. Immediately afterwards, the contact surfaces 17 and 37 of the two drivers 15 and 35, which can be rotated relative to one another, meet, whereby the further rotational movement of the outer driver 15 is fully transmitted to the inner driver 35. The rolling pin 36 at the opposite end of the spring 38 is also pushed out of the wedge space 55 there by the friction occurring on the inner wall 44 during the rotational movement. So that both coupling links 36 are freely movable. The rotation of the window handle is transferred to the square pin 30 without hindrance. If, on the other hand, a torque acts first or only on the inner driver 35, its wedge surface 39 acts on the associated roller pin 36. The force acting on it has a very small tangential and a very large radial component due to the geometric conditions. Therefore, the rolling pin 36 is pressed vertically against the inner wall 44 with great force, with the result that the resulting strong friction prevents a rotational movement. It can be seen that a direct or indirect rotation of the square pin 30, after bridging the angle of play B, brings about a clamping of the or each coupling member 36 and thereby immediately stops a further rotation.

It can be advantageous to provide the inner limit 24/44 with a material that is more flexible than the materials of the square driver 35 and the coupling member 36. As a result, when the inner driver 35 is rotated, the driven roller pin 36 can press into the inner wall 44. which gives a positive connection that allows an increased torque load on the square driver 35.

Fig. 3 shows a further embodiment similar to Fig. 2, but in a simplified design. Here there is only a laterally arranged roller pin pair 36, which is loaded by the compression spring 38 and, when the handle driver 15 is rotated, always remains in the larger region of a wedge-shaped intermediate space 55, which with its between the inner wall 44 and the opposite boundary of the polygon driver 35 Wedge surfaces 39 is formed. Thus, while the grip movement can take place without hindrance, conversely, in the event of an attack on the square 30 by the polygonal driver 35 which is also moved, once the angular play B has been overcome, blocking is only possible. A material-related permanent deformation of the inner wall 44 by the action of torque from the attack side of a door or a window is noticeable to the user as a malfunction of the handle actuation. At the same time, this is an indication that an exchange of the handle 10, or at least its "inner life" and / or some other security measure, is required.

The partial view of the oblique view of FIG. 4 shows a handle 10 with a handle neck 12 and a recess 16 which continues axially as a threaded hole 14. A stop body 20 has a guide bush 22 and through-pierced cams 23 which serve to receive fastening screws 26 (the thread of which is not shown for the sake of simplicity). The stop body 20 is from a cover plate or cover overlapped cap 21, which is supported by a compression spring 13 against the handle neck underside. Concentric to the guide bushing 22, the stop body 20 has on the underside a recess 84 provided with bulges 86, which positively receives an insert body 88 in the form of a locking ring 25. In this a fitting recess 24 is formed for rotatably receiving the polygon driver 35, which is rotatably connected to a polygon (here: square) 30. For this purpose, the latter has a transverse hole 32 which receives a locking pin 34 which passes through the polygonal driver 35 transversely. 35 roller pins or cylindrical rollers 36 are held in pairs on or around the polygon driver; there are preferably four pairs, a compression spring 38 being located between each two rolling pins 36.

The handle driver 15 is rotatably guided with a head part in the guide bush 22 with a sliding fit and the end of the recess 16 in the handle neck 12 adapted. A countersunk screw 18 fastens the handle driver 15 in the handle 10 by engagement in the threaded hole 14 of the handle neck 12 in such a way that the upper side of an annular flange 54 formed on the handle 15 rests slidably inside the stop body 20. On the back, the ring flange 54 carries lugs 45 which encompass the polygonal driver 35 concentrically. The circumferential ends of the lugs 45 assigned to the rolling pins 36 form the thrust surfaces 19.

It can be seen that the square driver 35 in the example shown has four spoke-like arms with circumferential curves for a sliding fit in the locking ring 25. At these arms are indentations 56 with the wedge surfaces 39, which together with the pair of spring-loaded pins 36 cause self-locking as soon as a given rotational angle play B between the square driver 35 and the handle driver 15 is bridged.

5a shows the components of such a handle in an exploded oblique view from above, while FIG. 5b shows corresponding oblique views from below. From this it can be seen that the stop body 20 can be locked after installation of the individual parts by a base plate 28, the stud bolts 29 of which can snap into the associated locking holes 49 of the stop body 20. The function of the arrangement of Fig. 4 or 5a and 5b largely corresponds to that of Fig. 2 and 3, but where self-locking by friction is possible regardless of any preferred positions of the handle.

A still further embodiment of a self-locking fitting can be seen from the underside of FIGS. 6a to 6c. Again, a handle driver 15 concentrically encloses a square driver 35 within a cylindrical fitting recess 24, but without lateral contact surfaces 17, 37 of the drivers 15, 35 touching in the idle state (FIG. 6a). The two-shell handle driver 15, which is rotationally rigidly connected to the handle (not shown here), has middle parts 50, each with an indentation 51 toward the square 30, which is axially recessed in the inner entrainer 35, which is provided with an indentation 56 which is similar in shape to the indentation 51. Arc-shaped wings 52 adjoin the middle parts 50, the ends of which have or form thrust surfaces 19. Between these individual rolling pins or cylindrical rollers 36 are provided, which are assigned in the radial direction inward curvatures 31 in the square driver 35. The middle parts 50 of the two halves of the handle driver 15 guide a compression spring 38 and locking balls 47 which have the same outer diameter as the roller pins 36. The latter are loaded by the spring 38 against the inner wall 44 of the fitting recess 24, in which recesses or locking recesses 27 are made at equidistant intervals, preferably offset by 90 ° in each case.

Fig. 6b shows a state in which this arrangement is rotated to the left by moving the handle and thus the handle driver 15 relative to the position shown above. In this case, the locking balls 47 come in through the attack from corner regions of the recesses 27, bearing against the inner wall 44, while the rolling pins or coupling members 36 are moved in a circular path along the inner wall 44 in contact with the pushing surfaces 19 of the handle driver 15. If the coupling links 36 are previously seated in the recesses 27, the orientation of the pushing surfaces 19 and the corner shape of the recesses 27 ensure that the handle driver 15 lifts the rolling pins 36 out of the locking recesses 27. The rolling pins 36 enter the bulges 31 of the square driver 35, so that this is inevitably coupled to the handle driver 15 and taken away. The inwardly pressed balls 47 roll along the inner wall 44. If one tries to turn the square 30 (FIG. 6c) starting from the rest position according to FIG. 6a, a corner region of the arch 31 of the square driver 35 moves the rolling pins 36 radially outward. You get into the recesses 27 of the stop body 20 and immediately block any further movement of the square driver 35. It can be seen that the square 30 can only be rotated over a small angular range, which is defined by the angle of play B, until the self-locking suppresses any further rotation . An important feature of this design is that it is secured against external actuation in or with the excellent locking positions.

In order to be able to block a torque transmission from the polygon 30 to the handle 10 even outside of the excellent locking positions of the handle 10, the design of FIGS. 7a to 7b provides a fitting recess 24 with four locking recesses 66 and four locking recesses 67 which, as shown in FIG. 8 shows in detail, is point symmetrical to the axis of rotation D of the handle 10 and the drivers 15, 35 and is preferably arranged at angles of 30 ° and 60 ° to the longitudinal and transverse axes L, Q of a stop body 20. Coupling members 36 provided between the handle driver 15 and the polygon driver 35 are designed as locking pins. The detent for locating the excellent positions of the window fitting is realized with a compression spring 68 and detent pins 47 which are pressed by the spring force onto the inside 44 of the fitting recess 24 or into the detent recesses 67 of the same shape. Turning the handle out of the excellent position causes the locking pins 47 to be pushed out of the locking recesses 67 against the force of the compression spring 68 and thus an increased torque for the user. The length of the locking pins 47 is selected such that they can only be pressed into the locking recesses 67 and not into the locking recesses 66. For this purpose, as shown in FIGS. 8 and 9, the locking recesses 67 have both a larger diameter and larger length dimensions than the locking recesses. The same applies to the locking and locking pins 36, 47. This ensures that an increased torque is noticeable for the user only in the excellent positions of the handle / fitting, here every 90 °. The locking pins 36, on the other hand, can be pushed into both the locking and locking recesses 66, 67 due to their size.

7a shows the arrangement in an excellent position of the handle. The locking pins 47 are pressed into the locking recesses 67 by the spring force. The polygonal driver 35 in turn has two indentations 31, each of which has a locking pin 36 take up. The latter lie with the least possible play between two thrust surfaces 19 of the double-shell handle catch 15 on the starting points S indicated schematically in FIG. As a result, there is no rotation angle play between the two drivers 15, 35, except for a rotation angle play caused by manufacturing tolerances of the components.

In the polygonal driver 35, a compression spring 70 is fixed in a blind hole 71 for each locking pin 36, the spring force of which is less than that of the spring 68 for the locking pins 47. The locking pins 36 are pressed against the inner wall 44 of the fitting recess 24 or into a recess by the spring force 66, 67 pressed. This ensures that the locking pins 36 are automatically pushed into the recesses 66, 67 at any time.

If you operate the handle in a functionally appropriate manner, the push surfaces 19 of the handle driver 15 drive the locking pins 36 on the circular path. Outside the recesses 66, 67, in particular in the excellent positions of the handle, the locking pins 36 always ensure a positive fit between the two drivers 15, 35, as a result of which the rotational movement is transmitted to the polygonal pin 30 without play via the polygonal driver 35. The excellent positions of the handle correspond to excellent positions of the connected window fittings; This ensures that the push rod is correctly positioned and that the window functions correctly due to the lack of play.

If the locking pins 36 are pressed into the locking recesses 66 or the locking recesses 67 during the rotational movement, the positive engagement is canceled and there is a rotation angle play between the two drivers 15, 35 and accordingly also between the handle and the polygonal pin. By turning the handle further, the locking pins 36 are pressed out of the recesses 66, 67 by the end edges or surfaces of the recesses 66, 67 serving as functional surfaces 69, so that the positive connection is immediately restored. The brief appearance of the angle of play between the excellent positions of the handle is not disadvantageous for the function of the window, since the excellent positions are transferred to the window fitting without play. The spring force of the compression spring 70 is chosen so that it is only too an imperceptible detent by pushing the locking pins 36 out of the recesses 66, 67 comes against the spring force.

In the event of a break-in, the coupling arrangement K of the handle is subjected to a torque from the polygonal pin 30. If the window handle is in an excellent position, as in FIG. 7a, the polygonal driver 35 can be rotated when the torque of the detent is overcome. If the position is reached as in FIG. 7b, the locking pins 36 are pressed into a locking recess 67 by the spring force of the compression spring 70 or, as in FIG. 7c, into a locking recess 66, i.e. the locking recesses 67 fulfill a double function as locking and locking recesses. The positive locking of the locking pin 36 between the two drivers 15, 35 is canceled and the polygonal driver 30 continues to rotate relative to the handle driver. As a result of the displacement of the arch 31 and its corner regions 39, which act as a functional surface, the respective locking pin 36 is pressed firmly into the locking recess 66 or 67 and can no longer return inward into the arch 31 with a further rotational movement. It now forms a positive connection between the handle driver 15 and the recess 66 or 67 in the fitting recess 24 of the stop body 20. Is the rotation angle play between the spaced contact surfaces 17, 37 of the handle driver 15 or the polygon driver 35 so large that the contact surfaces 17th , 37 of the two drivers 15, 35 meet, the handle driver 15 is also rotated a bit. However, the interlocking effect achieved by the locking pin 36 between the handle driver 15 and the stop body 20 prevents further twisting of the two drivers 15, 35 and thus the polygonal pin 30. The polygonal pin 30 can be rotated by a maximum of 30 ° in the form shown. At this angle of rotation, the locking elements of the window fitting are still engaged and unauthorized opening of the window is not possible.

The described form-fitting variant of self-locking does not require high accuracy of the component dimensions, but ensures outside of the functional or Locking positions of the handle always a reliable locking function when transmitting torque from the polygonal pin to the handle. In and around the locking positions of the handle, there is no rotation angle play between the handle and the polygonal pin, so that malfunctions of the fitting are effectively avoided. High costs in the manufacture of the components are reliably avoided. 10a shows the components of such a fitting in an exploded oblique view from above, while FIG. 10b shows corresponding oblique views from below. It can be seen from this that the coupling arrangement K can be formed in a separate insert body 88. For this purpose, the latter has a cylindrical fitting recess 24 in the inner circumference 44 of which the necessary locking and locking recesses 27, 66, 67 are made. The insert body is inserted into a receptacle 20 of the same shape in the stop body 20 and closes it off at the bottom. A base plate 28 is therefore no longer required. The coupling arrangement can be preassembled in a simple and convenient manner and then inserted into the stop body 20, which has a favorable effect on the production costs.

The coupling elements 36 of the coupling arrangement K can be designed as roller pins, cylindrical pins, balls or in other shapes. Insofar as the inner wall 44 of the stop body 20 is provided with recesses 27, these expediently have a shape adapted to the coupling members 36; Thus, for example, by exchanging the locking ring 25 in FIGS. 5a, 5b, components corresponding to FIGS. 6a to 6d can also be used, the recesses 86 being able at the same time to serve as a locking recess for the locking balls 47.

A still different design of a handle according to the invention is shown in three different positions in FIGS. 11a, 11b, 11c. The handle (not shown here) is connected to a slide, which at the same time forms the handle driver 15 and is linearly guided in an edge boundary 24 of the fitting, for example a housing or a recess in the fold. A transverse bore in the handle driver 15 contains a compression spring 38 which cooperates with a locking recess 48 in the housing 20 via a locking ball 47. In the slider or handle 15 there is a recess 57 in which a generally cuboid square driver 35 is accommodated. The driver 35 carries a square 30 which e.g. protrudes perpendicular to the plane of the drawing transversely from the driver 35. The latter has contact surfaces 37 at both ends, which in the rest state (FIG. 11 a) face contact surfaces 17 of the handle driver 15 with a play B of movement. The square driver 35 has a curvature 31 for receiving a coupling element 36, which can be designed in particular as a locking pin and sits between thrust surfaces 19 of the handle driver 15.

In the idle state, the locking pin 36 is located in the bulge 31 of the driver 35, while the locking ball 47 is seated in the locking recess 48 of the housing 20. Now the slide or handle driver 15 moves (FIG. 11b), the ball 47 disengages, the compression spring 38 being compressed, and the locking pin 36 slides or rolls along the inside of the housing. It can be seen that the slide in the housing or stop body 20 is freely movable.

However, if a force is applied via the square 30 to the square driver 35, the latter, with its corner area acting as a wedge surface, lifts the locking pin 36 upward into the locking trough 27. As a result, the slide driver 15 is locked in its position predetermined initially by the locking ball 47 and the handle cannot be moved (Fig. 11c).

The invention is not limited to one of the above-described embodiments, but can be modified in many ways. Thus, the self-locking, which counteracts an undesirable external force attack, can be brought about by frictional engagement, by positive locking or by combinations with different displacements of coupling members or coupling elements on or in an edge boundary 24. For this purpose, this can have friction surfaces and / or recesses or depressions which support a form fit with coupling elements or in any case bring about them. The reverse arrangement with projections or elevations on or in the edge boundary 24 also falls within the scope of the invention, while recesses, such as blocking troughs, are provided on the “inner” driver 35. Tiltable latching elements are also conceivable, which engage in a toothing formed in the inner circumference 44 of the edge boundary 24. The locking lugs are stored, for example, instead of the rolling or cylindrical pins 36 under spring load in the outer circumference of the polygonal driver 35. The number of latching and coupling elements, which can generally also have shapes deviating from the shape of a cylinder and a sphere, is variable depending on the construction of the handle 10 and its stop body 20. Likewise, the "radial" blocking path of coupling elements 36 can be predetermined in terms of construction depending on the load case. What is important is the wedging, jamming or locking of coupling elements between an edge boundary and an associated driving surface.

All of the features and advantages arising from the claims, the description and the drawing, including constructive details, spatial arrangements and method steps, can be essential to the invention both individually and in the most varied of combinations. Reference numerals list

B Movement play / angle play 35 polygon drivers

D axis of rotation 36 coupling link / rolling pin / locking pin

K coupling arrangement 37 contact surface

L longitudinal center / longitudinal axis 38 compression spring (s)

Q transverse axis 39 functional surface / wedge surface

S Starting point 40 coupling link / leaf spring

42 Angle end / spring end

10 handle 44 inner wall

12 handle neck 45 approaches

13 compression spring 46 web

14 threaded hole 47 locking ball

15 handle drivers 48 locking recess

16 recess 49 locking hole

17 contact surface 50 middle section

18 [countersunk head screw 51 entry

19 push surface 52 wings

20 stop body 54 ring flange

21 cover plate / cover cap 55 zone / space

22 guide bush 56 indentation

23 cams 57 recess

24 pass recess / 66 blocking recess edge limitation 67 locking recess

25 Locking ring 68 compression spring (detent) 26 fastening screws 69 functional surface / flank

27 recess / blocking trough

70 Compression spring (lock) 28 Base plate 71 Bore 29 Stud 84 Cut-out 30 Polygonal / Square 86 Bulge 31 Bulge / recessed recess 88 Insert body 32 Cross hole 89 Holder

33 head start

34 locking pin

Claims

Patent claims 1. Window and/or door fitting for actuating a locking mechanism, with a handle in the form of at least one handle (10), which is mounted in an axially fixed and rotatable manner on or in a stop body (20) by means of a handle neck (12), which is mounted on a flat support, in particular a room closure element such as a door leaf, window frame or the like. can be fastened, and with a polygon (30) which engages in the stop body (20) or passes through it and which is connected in a rotationally rigid manner to the handle (10) for actuating the locking mechanism, thereby indicating that between the handle (10) and Polygon (30) a coupling arrangement (K) is provided, with which a torque transmission from the handle (10) to the polygon (30) can be effected, but can be locked from the polygon (30) to the handle (10). 2. Fitting according to claim 1, characterized in that the coupling arrangement (K) has two drivers (15, 35) arranged between the handle (10) and the polygon (30), which move with a predetermined movement play (B) between adjacent driver surfaces (17, 37) can be coupled to one another in a force-fitting and/or form-fitting manner directly or through at least one coupling member (36; 40, 42) in such a way that a torque acting on the handle (10) can be transferred to the polygon (30), but that a torque acting on the handle (10) can be transferred to the polygon (30). Polygonal (30) acting torque stops a polygonal movement or an actuation of the locking mechanism. 3. Fitting according to claim 2, characterized in that a first driver (15) is connected to the handle (10) and a second driver (35) to the polygon (30) in a rotationally fixed manner, both drivers (15, 35) are mounted movably relative to one another within an edge boundary (24) assigned to the fitting. 4. Fitting according to claim 2 or 3, characterized in that to stop the polygonal movement between at least one coupling member (36; 40, 42), the handle driver (15), the polygonal driver (35) and / or the edge boundary (24 ) a frictional, positive and/or non-positive connection can be generated. 5. Fitting according to claim 3 or 4, characterized in that each coupling member (36; 40, 42) by means of functional surfaces or flanks (17, 37; 19) formed on the drivers (15, 35) and on the edge boundary (24). 27, 31, 39; 66, 67, 69) can be moved and/or actuated. 6. Fitting according to one of claims 3 to 5, characterized in that the handle driver (15) and / or the polygonal driver (35) can be locked in at least one excellent functional position of the locking mechanism by means of locking means (47, 67). 7. Fitting according to one of claims 3 to 6, characterized in that the edge boundary (24) of the fitting is a cylindrical fitting recess in which the drivers (15, 35) are rotatably mounted, the handle driver (15) being at least a main part of the polygon driver (35) concentrically surrounds. 8. Fitting according to claim 7, characterized in that a projection (33) of the polygonal driver (35) extends to an inner wall (44) of the cylindrical fitting recess (24) and that a leaf spring (40) is provided as a coupling member, which with The main part of the handle driver (15) rests against the edge boundary (24; 44) and with inwardly angled ends (42) adapted to the shape of the projection (33) of the polygonal driver (35) between the contact surfaces (17, 37) of the driver (15, 35) is fitted. 9. Fitting according to claim 7, characterized in that the drivers (15, 35) have engagement elements which are designed as a recess (51) and an associated indentation (56) and are arranged with rotation angle play (B) relative to one another, so that Opposite contact surfaces (17, 37) of the drivers (15, 35) are spaced apart from one another in the resting state. 10. Fitting according to claim 9, characterized in that the handle driver (15) has arcuate wings (52) on a central part (50), the circumferential ends of which have or form thrust surfaces (19). 11. Fitting according to claim 9 or 10, characterized in that the coupling members (36) are rolling pins, locking pins, cylindrical pins, cylindrical rollers or balls. 12. Fitting according to claim 11, characterized in that the coupling members (36) form at least one pair of coupling elements, each of which is loaded by a compression spring (38) on adjacent thrust surfaces (19) of the handle driver (15), each pair of coupling elements is arranged in an intermediate space (55) of approximately trapezoidal basic shape, which is formed by a cylindrical inner wall (44) of the cylindrical fitting recess (24), the thrust surfaces (19) of the handle driver (15) and wedge surfaces (39) of the polygonal driver (35). is limited and widens towards the associated spring (38), and the coupling members (36) can be moved radially outwards by attacking the wedge surfaces (39) of the polygonal driver (35). 13. Fitting according to claim 11, characterized in that a coupling member (36) is arranged between the thrust surfaces (19) of the handle driver (15), and that each coupling member (36) has a bulge (31) in the radial direction inwards Polygon driver (35) is assigned, of which at least corner areas engage on the coupling member (36). 14. Fitting according to claim 13, characterized in that at least four recesses or locking recesses (27, 66) corresponding to the coupling members (36) are provided in the inner wall (44) of the fitting recess (24). 15. Fitting according to claim 13 or 14, characterized in that each coupling member (36) is loaded radially outwards by a spring force. 16. Fitting according to one of claims 13 to 15, characterized in that diametrically opposite middle parts (50) of the handle driver (15) guide a compression spring (38) which loads locking balls (47) outwards. 17. Fitting according to claim 16, characterized in that at least four locking recesses (67) corresponding to the locking balls (47) are provided in the inner wall (44) of the fitting recess (24). 18. Fitting according to claim 16 or 17, characterized in that the locking balls (47) are larger than the coupling members (36), in particular have larger length dimensions and diameters. 19. Fitting according to one of claims 16 to 18, characterized in that the spring force acting on the locking elements (67) is greater than the spring force acting on the coupling members (36). 20. Fitting according to one of claims 13 to 17, characterized in that the coupling members (36) and / or the locking balls (47) can be moved radially by attacking the bulges (31) and the recesses (27, 66, 67), in particular by functional surfaces (69) formed in corner areas towards the inner circumference (44) of the fitting recess (24). 21. Fitting according to one of claims 3 to 20, characterized in that the edge boundary (24) is formed in the bottom side of the stop body (20). 22. Fitting according to one of claims 3 to 21, characterized in that the edge boundary (24) is formed in an insert body (25, 88) which can be inserted into the stop body (20) in a positive and/or non-positive manner. 23. Fitting according to one of claims 3 to 22, characterized in that the edge boundary (24; 44) has a material that is more flexible than the material of the polygonal driver (35) and / or the material of the coupling members (36). 4. Fitting in the form of at least one handle with a handle part designed, for example, as a slide, which is axially fixed and transversely movable on or in a housing, stop body (20) or the like. is mounted, which is mounted on a flat support, in particular a room closure element such as a door leaf, window frame or the like. can be fastened, with a transverse to the stop body (20) within an edge boundary (24) arranged output element (30), which is rigidly connected to the handle for actuating a locking mechanism, and with a coupling arrangement (K) present between the handle and the output element (30) through which, depending on whether a force is applied to the handle or to the output element ( 30) takes place, a handle movement can be released or blocked. 25. Fitting according to claim 24, characterized in that the coupling arrangement has two drivers (15, 35), which in one actuation direction with a predetermined movement play (B) and in the opposite direction play-free with each other and / or with a coupling member (36). can be connected in a force-fitting manner. 26. Fitting according to claim 24 or 25, characterized by the fact that the handle can be released when two drivers (15, 35) have no play and that the handle can be blocked by a driver (e.g. 35) only after bridging a given movement play (B) attacks a coupling link (36) or the other driver (e.g. 15). 27. Room closure element with a fitting according to one of claims 1 to 26.