EP0460297A1 - Handling mechanism - Google Patents

Abstract

An actuating handle designed especially as a window grip (10) has a coupling (K) surrounding the grip neck (14) and possessing positive-locking elements, such as lugs (29), noses (52) or the like, located diametrically opposite one another. The coupling parts (46, 50) are guided so as to be axially slidable on one another. One coupling part is a locking ring (50) fastened to a shank (22) of a spring-loaded axially displaceable locking unit (20), whilst a locking sleeve (46) held fixedly in terms of rotation in the fastening body (30) forms the other coupling part. It can sit by means of bearing faces (48) in a holding member (33) which is connected rigidly to a fastening member (30) or which is in one piece with or set in the latter. The locking ring (50) is axially guided by means of circumferential extensions (58) in a lower recess (15) of the grip head (12) and is loaded upwards by a compression spring (26). For actuation, the locking unit (20) has a push-knob which, for example in the locked state, projects beyond the grip head (12); it can be replaced by a lock unit lockable and releasable by means of a key or be combined with this. <IMAGE>

Description

The present invention relates to an operating handle, in particular a window handle of the type specified in the preamble of claim 1.

Lockable or lockable handles are known for example from DE-U-8 624 544 and DE-U-8 514 560. When the handle is actuated, the associated device, for example a window gear, a lock nut or the like. rotated along. A stop body, with which the handle is connected axially fixed, can have a latching device in order to determine preferred angular positions of the handle. For windows with tilt and turn fittings, a zero degree locking position is conventionally given when the window handle is pointing downwards; if it is placed horizontally, the window can be swiveled around the vertical axis, ie opened. If only limited room ventilation is to take place, the window can be tilted around a horizontal axis by turning the handle upwards (to the 180 ^o position).

Switching through several handle rotary positions is not always desirable. In the daily operation of the window, the tilt position is used more often than the pivot position. With newer operating handles, the tilt position can already be reached in a 90 ^o position of the handle, which prevents incorrect operation when the window pops out of the window gear tilt joint. In a known embodiment, the handle can only be turned further upwards if a button on the handle head has previously been pressed.

Lockable window handles, which can only be moved from the 0 ^o position to the 90 ^o position, have been developed especially for rooms that need to be secured from the inside. This then corresponds to the tilt position of the window, which can be tilted for room ventilation without unlocking; but it remains closed. The window can then only be opened by operating personnel who have a key.

There is a general need for an improved construction which, on the one hand, is simple in construction, but on the other hand ensures ease of use with sufficient security. It is an important object of the invention to provide an operating handle which meets these requirements and which only allows a window provided with the handle to be opened or tilted when it is unlocked. Furthermore, the handle should be able to be quickly converted if a change of function is desired or necessary.

Basic ideas of the invention are specified in the characterizing part of claim 1. Refinements are the subject of claims 2 to 14.

The invention provides according to claim 1 that the one coupling part is axially slidably guided on or on the other coupling part. This is a significant advance over the previous constructions, the relatively rigid structure of which only allowed a relative movement to disengage and engage the interlocking elements, whereas a mobility of the Coupling parts on or on each other were missing. The new design not only simplifies production and assembly, but also ensures that the bearing of the handle neck and that of the coupling are mechanically stabilized in spite of the proximity in a narrow space.

An important measure of the invention according to claim 2 is that the coupling parts are each interchangeably mounted on the body carrying them. As a result, it is achieved in a surprisingly simple manner that different requirements or functional requirements can also be taken into account on site without the need to procure and mount new fittings. Warehousing is also greatly relieved.

In a handle, one coupling part of which is a locking ring carried by the shaft of the locking unit, the invention provides according to claim 3 that the other coupling part is formed by a locking sleeve held in a rotationally fixed manner on the stop body. You can sit according to claim 4 with contact surfaces in a holding member which is rigidly connected to the stop body or in one piece, for example in the form of a reinforcing plate according to claim 5. Appropriately, the lower end of the locking sleeve with the contact surfaces in the embodiment of claim 6 forms a polygon , e.g. a square or octagonal, the height or axial extent of which is at least equal to the thickness of the reinforcing plate. It can be seen that the components mentioned are of a basically simple shape and can therefore be manufactured inexpensively and can be assembled (or dismantled) easily. Significant advantages in the manufacture and application are combined with high usability, which benefits the user.

According to claim 7, the one coupling part, namely the locking ring, can have at least one axially directed nose which fits with minimal circumferential play between ears on the upper outer region of the other coupling part, ie the locking sleeve. The engagement of the form-locking element therefore takes place in a circumferential area at a relatively large radius, so that in the locked Condition a high rotational resistance is guaranteed. This applies in particular to the embodiment of claim 8, according to which the coupling parts each have four form-locking elements diametrically opposite one another in pairs, in particular at angular intervals of 90 ^° , so that quadruple support is ensured with a correspondingly large section modulus. With simple design but also an embodiment of a high long-term reliability in which only one locking ring nose between two ears of the locking sleeve has either held against rotation or ^o rotatable about eg 225 to the TBT function - operation of the window handle only for tilting, then to pivot - to allow.

In terms of design, it is advantageous if the locking ring is axially guided with circumferential projections in a recess in the lower region of the handle head. This also contributes to the absorption of torques, which prevent a violent handle adjustment in the locked state.

According to claim 10, the locking ring is loaded by a compression spring which surrounds the locking sleeve and is supported at least indirectly - by a cover - on the stop body. In this embodiment, the handle is therefore usually locked, since the form-locking elements of the locking ring and locking sleeve are normally in engagement. Only when the locking unit is pressed down against the spring load do the coupling parts move apart, which releases the handle movement. According to claim 11, the locking unit is also loaded upwards by a support spring which surrounds the locking shaft in a stepped bore in the grip head and whose spring force is supported by that of the compression spring which presses the locking ring upwards.

To the strength and functionality of the construction according to the invention it also contributes that the locking sleeve according to claim 12 can be rotatably arranged on a bearing bush of the stop body and on a spacer sleeve, which in turn supports the handle neck. This concentric arrangement allows minimal bearing play with very low friction, which can be influenced by the choice of different materials and / or permanent lubrication.

Advantageously, according to claim 13, a push button is provided for actuating the locking unit, which extends beyond the handle in the locked state and enables unlocking by simple thumb pressure.

The invention further provides, according to claim 14, that the locking unit is replaced by a lock unit that can be locked and unlocked by means of a key or is combined with such a unit, so that the handle offers even greater security in use.

Fig. 1

eine Teil-Axialschnittansicht eines Fenstergriffs im verriegelten Zustand,

Fig. 2

eine Teil-Axialschnittansicht entsprechend Fig. 1, jedoch im entriegelten Zustand,

Fig. 3a, 3b,3c

eine auseinandergezogene Schrägansicht von Kupplungs- und Halteteilen und

Fig. 4a, 4b, 4c

eine weitere Explosionszeichnung von Kupplungs- und Halteteilen einer abgewandelten Bauform.

Further features, details and advantages of the invention result from the wording of the claims and from the following description of exemplary embodiments with reference to the drawing. In it show:

Fig. 1

a partial axial sectional view of a window handle in the locked state,

Fig. 2

2 shows a partial axial sectional view corresponding to FIG. 1, but in the unlocked state,

3a, 3b, 3c

an exploded oblique view of coupling and holding parts and

4a, 4b, 4c

another exploded view of coupling and holding parts of a modified design.

In various operating states, a window handle generally designated 10 is shown in FIGS. 1 and 2. It has a main part 11, a grip head 12 and a neck 14, in which there is an upwardly directed depression 15 for receiving components (described below). There is also a square hole 16 into which a square pin (not shown) can be inserted. Parallel to the axial direction A, but outside the axis of rotation of the handle 10, a locking unit 20 is inserted into the head 12, which with or against spring force can be moved axially parallel. In a stepped bore 18, a support spring 25 encloses a shaft 22 of the locking unit 20, on the collar 21 of which it rests at the top.

On the handle neck 14 is a slide or spacer ring 24, which can be designed as a brass sleeve. A compression spring 26 supports a cover plate 28, which pivotally covers the top of a stop body 30. For a better grip on the cover 28, finger depressions 34 are provided on the narrow sides of the stop body 30, which is rectangular in plan view.

The stop body 30 has cams 36 with screw holes 37 for attachment to a support structure (not shown), e.g. on the frame of a window. The stop body 30 is in one piece with a centrally arranged bearing bush 31, in which the spacer sleeve 24 receives the handle neck 14. This is axially fixed, but rotatable, to the stop body 30 by means of a flared bushing 44. Between the flanging and the lower part of the bearing bush 31 there is a latching arrangement consisting of upwardly directed bottom latching depressions 38 and a bottom latching ring 40 cooperating with them. Comparable arrangements are in DE-OS 27 52 213 and in DE-GM 85 14 560.

The slide ring 24 is enclosed by a clutch K which has a locking bush 46. It has flattened portions 48 at the lower end, which protrude into a recess 58 of the same shape in a reinforcing plate 33, which is fixedly connected to the stop body 30. A locking ring 50 is slidably arranged on the locking bushing 46. This has a radial extension 54 for attachment to the lower end of the locking shaft 22, e.g. by means of a screw 23. A compression spring 26 surrounds the locking sleeve 46 and is supported on the one hand on the cover plate 28 and on the other hand on the underside of the locking ring 50.

Two different designs of the clutch arrangement K are shown in FIGS. 3a, 3b, 3c and 4a, 4b, 4c, respectively, pulled apart.

The left row of figures (Fig. 3a, 3b, 3c) shows the two-part coupling K at a distance above the reinforcing plate 33, which has two countersunk screw holes 32 and the central recess 58, which has the same contour as the lower end of the locking sleeve 46. Their flats 48 have at least the same axial extent or height as the reinforcing plate 33 or its thickness. The locking sleeve 46 of FIG. 3a is at an angular distance of 90 ^o two ears 49 which protrude at the upper end radially outwardly. In between is a gap, the width of which corresponds to that of a nose 52 of the locking ring 50 so that the latter can be locked with minimal circumferential play as soon as the locking ring 50 on the assembled locking sleeve 46 has reached the upper axial position. In this locked position (see FIG. 1), no movement of the window handle 10 or its main part 11 is possible. However, if the push-button latch 20 is pressed down against the force of the springs 25, 26 (FIG. 2), the latch ring 50 disengages and the handle 10 or its main part 11 can be pivoted. If it is rotated by more than 90 ^o , the unlocking takes place in such an angular position that the one nose 52 (FIG. 3b) on the larger free peripheral part of the upper region of the locking sleeve 46 in the ears 49 only finds end stops which one Limit swivel range of eg 225 ^o . This is expedient for the TBT function (tilt before turn), which enables free tilting without unlocking, while it should only be possible to swing open the window when the handle 10 is unlocked.

The embodiment shown in Fig. 4a, 4b, 4c uses very similar coupling parts and a similar reinforcement plate 33. In the example of Fig. 4a, the locking sleeve 46 has four identical, radially projecting ears 49 at regular 90 ^o intervals. The circumferential gaps between them are just large enough that four lugs 52 of the locking ring 50 of identical shape can snap into one another essentially without play as soon as the locking ring 50 has reached the sleeve 46 (FIG. 1). This so-called 4-point locking ensures a special high moment of resistance for the locked window handle 10. Whose rotation relative to the stop body 30 is prevented by the fact that the lugs 52 of the locking ring 50 are positively engaged in the gaps between the ears 49 of the locking sleeve 46. When the push-button latch 20 is actuated, this positive locking is canceled, so that the window handle 10 can be pivoted with the main part 11 during the unlocking.

The torque applied in the locked state is transmitted from the handle 10/11 via the locking ring projections 58 guided in the handle head 12 and the lugs 52 to the ears 49 of the locking sleeve 46, the flats 48 of which are supported in a rotationally fixed manner in the recess 58 of the reinforcing plate 33. The latter is in turn embedded in the stop body 30 (FIGS. 1 and 2) in such a way that its cams 36 introduce all forces or moments into the window frame with the screw connection 37.

It can be seen that by simply exchanging different locking sleeves 46 and the respective locking rings 50, the different operating modes for the window handle 10 can be implemented quickly as required. For production and storage, there is the particular advantage that all other components of the actuating handle can be the same. It is up to the customer or user to determine the design of the window handle 10. The operation is uniform: the locking unit 20 acts in any case as a so-called child lock.

It is also within the scope of the invention to use a lock unit instead of the bolt unit 20 or combined with it, which can only be unlocked by means of a key, as described for example in DE-GM 85 14 560. Coupling elements in the manner of DE-GM 89 02 660 or 89 07 692 can also be used.

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

Legend PA 585 EP

A

Axial direction

K

clutch

10th

Window handle

11

(Handle) main part

12

Grip head

14

Handle neck

15

deepening

16

Square hole

18th

Stepped bore

20th

Latch unit

21

Federation

22

shaft

23

screw

24th

Spacer sleeve

25th

Support spring

26

Compression spring

28

cover

30th

Stop body

31

Bearing bush

32

Screw holes

33

Reinforcement plate

34

Finger depressions

36

cam

37

Screw holes

38

Floor rest depressions

40

(Bottom) locking ring

44

Flare bushing

46

Locking sleeve

48

Flattening

49

Ears

50

Locking ring

52

Noses

54

Radial extension

56

approaches

58

Recess

Claims (14)

Operating handle, in particular window handle (10) with a handle neck (14) which is rotatably and axially fixed in a stop body (30) and has a driving device (16) for rotating adjustment of a component to be actuated, for example for a window mechanism, with a handle head ( 12), in which a spring-loaded locking unit (20) can be moved parallel to the axial direction (A), as well as with a coupling (K), which encloses the handle neck (14) and the parts of which form-locking elements such as ears (49), lugs opposite one another (52) or the like have, wherein a coupling part (50) with the locking unit (20) and the other coupling part (46) with the stop body (30) is axially fixed, characterized in that the one coupling part (50) on or on the other coupling part (46) is guided axially slidably. Handle according to claim 1, characterized in that the coupling parts (46, 50) are each interchangeably mounted on the body (22; 30) carrying them. Handle according to claim 1 or 2, wherein the one coupling part is a locking ring (50) fastened to a shaft (22) of the locking unit (20), characterized in that the other coupling part is secured by a locking sleeve (46) held in the stop body (30) in a rotationally fixed manner. is formed. Handle according to claim 3, characterized in that the locking sleeve (46) with contact surfaces (48) is seated in a holding member (33) which is rigidly connectable or integral with the stop body (30). Handle according to claim 3, characterized in that the holding member is a reinforcing plate (33) which is let into the stop body (30) at the top or outside, preferably together with it on a supporting structure, for example a window frame. Handle according to claim 5, characterized in that the lower end of the locking sleeve (46) with the contact surfaces (48) forms a polygon, for example a square or octagonal, the height or axial extent of which at least equals the thickness of the reinforcing plate (33). Handle according to one of claims 1 to 6, characterized in that the one coupling part (locking ring 50) has at least one axially directed nose (52) which fits with minimal circumferential play between ears (49) on the upper outer region of the other coupling part (locking sleeve 46) . Handle according to claim 7, characterized in that the coupling parts (46, 50) each have four form-fitting elements (49; 52) diametrically opposite one another in pairs, in particular at angular intervals of 90 ^° . Handle according to at least one of claims 3 to 8, characterized in that the locking ring (50) with circumferential projections (58) is axially guided in a recess (15) in the lower region of the handle head (12). Handle according to at least one of claims 2 to 9, characterized in that the locking ring (50) is loaded upwards by a compression spring (26) which surrounds the locking sleeve (46) and is at least indirectly - via a cover (28) - on the stop body (30) supports. Handle according to claim 10, characterized in that the locking unit (20) is loaded upwards by a support spring (25) which surrounds the locking shaft (22) in a stepped bore (18) in the handle head (12). Handle according to at least one of claims 3 to 11, characterized in that the locking sleeve (46) is rotatably arranged on a bearing bush (31) of the stop body (30) and on a spacer sleeve (24), which in turn supports the handle neck (14) . Handle according to at least one of claims 1 to 12, characterized in that the locking unit (20) has or forms a push button for actuation which, in the locked state, projects above or outside the handle head (12) and enables unlocking by thumb pressure. Handle according to at least one of claims 1 to 13, characterized in that the locking unit (20) is replaced or combined with a lock unit which can be locked and unlocked by means of a key.

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