DE9418857U1 - Rotary actuator on a manual transmission of a window, a door or the like. - Google Patents

Abstract

The mechanism is for the selective drive of a window, door etc. It has an actuating shaft (10) extending through an opening (22) in a leaf-frame and engaging with a driving member (2). This extends through a guide bush (13) secured in the opening. It has a rotary driving stop (12) at the end towards the member. The stop protrudes in the radial direction beyond the internal surface of the bush in the radial direction. On the external surface of the bush there can be a radial locking protrusion preventing rotation, and by which the bush is supported from the internal surface of the opening. There can also be an axial stop (21) on the bush, protruding in the radial direction. It has a pointed locking pin protruding towards the frame.

Description

&iacgr; TELEF0N:0711/784731 TE*LE«^ X : O 7 f J / ?8 OO &thgr;9*& I

KOHLER SCHMID + PARTNERS " ^:

PATENT ATTORNEYS

KÖHLER SCHMID + P. RUPPMANNSTR. 27 D-70565 STUTTGART

20 869 Si/nu

ROTO FRANK AG Stuttgarter Str. 145-149 70771 Leinfelden-Echterdingen

Rotary actuator device on a manual transmission of a window, a door or dal.

The invention relates to a rotary actuating device on a gearbox of a window, a door or the like with an actuating shaft that can be connected to a drive element of the gearbox through a recess in a casement, which in the installed position passes through a guide bush held in the recess of the casement and on which a rotary locking element of a rotary locking device that is effective in the direction of rotation of the actuating shaft is held on the side of the guide bush facing the drive element.

On such rotary actuation devices, the various switching positions of the gearbox, for example the tilt-ready position and/or the rotation-ready position, are marked tactilely for the operator by means of the rotary locking device.

In the case of known rotary actuation devices, the drive element, to which the actuation shaft is to be fixed, is arranged in a gear housing inserted from the rebate side of the casement frame into the relevant frame spar. To install the rotary actuation device, a hole is first drilled from the inside of the casement spar to the gear housing. A guide bushing is then inserted into this hole, resting against the cylindrical wall of the hole. The actuation shaft with the rotary locking element pre-mounted on it is finally inserted through the guide bushing and connected to the drive element. A manual actuation handle is attached to the end of the actuation shaft facing away from the drive element. If a guide bushing is used that has a radial outer collar that projects beyond the hole in the casement spar, via which it rests on the casement spar from the outside when installed, the guide bushing is screwed to the casement frame at its outer collar in a further assembly step. In this way, the guide bush is fixed in the direction of rotation of the actuating shaft of the rotary actuating device.

The disadvantage is that when assembling the known rotary actuation devices, a number of components have to be handled separately and a number of individual assembly steps have to be carried out. The ease of assembly of the known rotary actuation devices is thereby impaired.

The invention is based on the object of further developing a rotary actuating device so that its assembly is simplified.

This object is achieved according to the invention in that the rotary locking element projects radially beyond the inner diameter of the guide bushing on a rotary actuating device of the type mentioned at the beginning. Due to the design described, it is possible to pre-assemble both the rotary locking element and the guide bushing on the actuating shaft before final assembly. The manual actuating handle is expediently also fixed to the associated end of the actuating shaft during pre-assembly. Since the manual actuating handle also projects radially beyond the inner diameter of the guide bushing, this is held between the rotary locking element and the manual actuating handle on the actuating shaft in the axial direction, possibly with play. The assembly consisting of the actuating shaft, rotary locking element, guide bushing and, if applicable, the manual actuating handle can be inserted into the hole provided for this purpose on the relevant spar of the sash frame with one hand and fixed in the installation position. The radial projection of the rotary locking element in relation to the inner diameter of the guide bushing can extend over the entire

outer circumference of the rotary locking element. Alternatively, however, two nose-like projections can also be provided that act as stops for the guide bush.

In a further development of the invention, at least one anti-twisting projection is provided on the outer surface of the guide bush facing the inner wall of the recess in the casement frame, which projection supports the guide bush in the installed position on the inner wall of the recess in the casement frame. The anti-twisting projection serves to fix the guide bush in the direction of rotation of the actuating shaft. If the guide bush with the anti-twisting projection projects beyond the recess in the casement frame in the radial direction and the anti-twisting projection is made of a material whose strength or hardness exceeds the strength or hardness of the casement frame material, the anti-twisting projection digs into the recess provided for this purpose in the inner wall of the guide bush when it is inserted. This automatically fixes the guide bush in the direction of rotation of the actuating shaft. Alternatively, an anti-twisting attachment made of a relatively soft material can be provided, which plastically deforms when the guide bush is inserted into the recess in the sash frame, thereby causing the guide bush to press fit inside the recess in the sash frame. In any case, due to the design of the guide bush described, additional assembly measures to prevent the guide bush from rotating are unnecessary.

If the guide bush has at least one axial stop that projects radially beyond the recess of the casement frame, then in a further expedient embodiment of the invention, to prevent the guide bush from rotating, at least one anti-twisting pin with a pointed end that projects beyond the axial stop on the side facing the casement frame is pre-mounted on the axial stop. When the guide bush is inserted into the recess of the casement frame, the anti-twisting pin automatically penetrates the frame beam at the edge of the recess and in this way secures the guide bush against unintentional rotation in the circumferential direction.

A preferred embodiment of the rotary actuation device according to the invention, in which the guide bush has at least one axial stop that projects radially beyond the recess in the casement frame, is characterized in that the guide bush is guided on the actuation shaft so that it can move in the axial direction and is spring-loaded in the axial direction on the side facing away from the rotary locking element. Such rotary actuation devices use, for example, a guide bush with a stepped outer circumference. The bush section with the smaller diameter projects into the recess or hole in the casement frame in the installed position; the bush section with the larger diameter projects outwards beyond the inside of the relevant casement spar and forms a ring that overlaps with the neck bearing of the manual actuation handle mounted on the actuation shaft. The transition area that runs essentially perpendicular to the longitudinal axis of the guide bush

between the bushing section with a smaller diameter and the bushing section with a larger diameter, the bore intended to accommodate the guide bushing comes into contact with the sash spar as an axial stop. If the guide bushing is now guided on the actuating shaft so that it can be moved in the axial direction and is spring-loaded with pressure in the axial direction on the side facing away from the rotary locking element, the contact surface, which is angled to the longitudinal axis of the guide bushing, always automatically fits tightly on the inside of the sash spar in question, regardless of the depth of the bore. Without any additional assembly measures, an attractive appearance of the visible parts of the rotary actuating device can be ensured even with changing bore depths. Since the bores are made from the inside of the room through the overlap of the sash frame and the bore depth depends accordingly on the thickness of the sash frame overlap, changes in the thickness of the overlap can be compensated for with rotary actuating devices according to the invention.

In a further development of the invention, a coil spring is provided through which the actuating shaft passes centrally to apply spring pressure to the guide bush. The coil spring can also be pre-assembled on the actuating shaft before final assembly.

A further preferred embodiment of the rotary actuating device according to the invention, in which the rotary locking element is designed as a rotary locking bushing with a stepped outer diameter,

is characterized in that the outer diameter of the rotary locking bushing on the side facing the drive element essentially corresponds to the outer diameter of the guide bushing and on the side facing the guide bushing it essentially corresponds to the inner diameter of the guide bushing, whereby the rotary locking bushing is guided telescopically in the guide bushing on the side facing the guide bushing. In particular, if the bore of the wing spar is made with a diameter corresponding to the outer diameter of the rotary locking bushing or the guide bushing, an exact guide of the rotary locking bushing and the guide bushing and thus an exact guide of the entire assembly, including the actuating shaft and, if applicable, the manual actuating handle, in the bore of the wing spar is ensured during final assembly of the rotary actuating device. Accordingly, tilting of the rotary locking bushing and the guide bushing inside the bore is avoided and the actuating shaft is moved with a directed movement in the direction of the drive element. Since the rotary locking bushing does not have to be pushed through the inside of the guide bushing when assembling the rotary actuation device, the rotary locking bushing can be designed with a relatively large diameter, namely with the diameter of the section of the guide bushing arranged inside the bore. If the locking elements of the rotary locking bushing are arranged on the front side facing the drive element, the distance between diametrically opposite locking elements can also be selected to be relatively large due to the relatively large diameter of the rotary locking bushing. The locking properties of the rotary locking device are positively influenced by this.

In the case of a rotary actuation device according to the invention with a manual actuation handle which sits on a handle neck on the end of the actuation shaft facing away from the drive element, it is recommended, as provided in an advantageous embodiment of the invention, to provide at least one guide projection on the handle neck which runs in the axial direction of the actuation shaft and guides the guide bushing in this direction. Due to the interaction of the guide bushing and the guide projection, the structural unit consisting of the actuation shaft, rotary locking bushing, guide bushing and manual actuation handle is stabilized when inserted into the hole in the relevant wing spar, particularly in the transverse direction of the actuation shaft. Since the individual parts of the structural unit are guided and moved against one another, any tilting which would hinder assembly is ruled out from the outset.

A particularly effective mutual guidance of the manual operating handle and the guide bush is achieved in the case of a further embodiment of the rotary operating device according to the invention in that the guide projection is designed as a neck bearing bush, which encloses the operating shaft concentrically with the guide bush and is guided telescopically in the latter.

The invention is explained in more detail below using schematic representations of embodiments. They show:

Fig. 1 shows a first embodiment of a rotary actuating device for a window sash immediately before final assembly,

Fig. 2 the rotary actuator according to Figure 1 in the final assembly position,

Fig. 3 a second embodiment of a rotary actuating device in final assembly position,

Fig. 4 is an enlarged view of section Z in Figure 3,

Fig. 5 a third embodiment of a rotary actuating device in final assembly position,

Fig. 6 is an enlarged view of section Y in Figure 5,

Fig. 7 shows a fourth embodiment of a rotary actuating device in final assembly position,

Fig. 8 is a section along line A-B in Figure 7 and

Fig. 9 is an enlarged view of section X in Figure 8.

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1 and 2 show a rotary actuating device for a window sash, which has as essential components a handle unit 1 and a drive element in the form of a gear pinion 2. The gear pinion 2 is rotatably mounted inside a gear housing 3 and its external teeth engage with a rack-like counter-teeth of a drive rod 4. By means of the drive rod 4 and fittings interacting with it, the window sash, in the case shown a window sash with a wooden frame, can be moved into its various positions in a known manner. A central receptacle 5 provided on the gear pinion 2 has a square cross-section. The entire gear housing 3 is inserted from the rebate side of a vertical sash member 6 into this, immediately adjacent to a sash overlap 7, and is connected to the sash member 6 via a faceplate 29. The gear housing 3 projects into a recess in the form of a receiving bore 22 which is made from the inside of the wing spar 6 through the wing overlap 7.

The handle unit 1 comprises a manual operating handle 8, which is attached to a handle neck 9 on an operating shaft 10 with a square cross-section and is axially secured in the attached position by a press fit. In the circumferential direction of the operating shaft 10, a rotationally fixed connection with the manual operating handle β is produced by a positive connection between the operating shaft 10 and a receptacle 11, which also has a square cross-section, in the interior of the handle neck 9.

,4On the free end of the actuating shaft 10 there is arranged a rotary locking element in the form of a rotary locking bushing 12 and a guide bushing 13 concentric with it. Before final assembly, the rotary locking bushing 12 is supported with its end facing the free end of the actuating shaft 10 on a locking bolt 15 which can be moved in the radial direction of the actuating shaft 10. The locking bolt 15 is pre-tensioned into the position shown in Figs. 1 and 2 by a locking spring 16. On its end facing the manual actuating handle 8, the rotary locking bushing 12 is acted upon by a rotary locking spring 17. This is supported inside a neck bearing bushing 14. A helical spring serving as a compensating spring 18 is arranged between the handle neck 9 and the guide bushing 13. On its front side facing the gear pinion 2, the rotary locking bush 12 has locking projections 23 that protrude in the axial direction. In the final assembly position of the handle unit 1, these interact with corresponding locking receptacles 24 that are provided on the outer wall of the gear housing 3 facing the handle unit 1.

Both the rotary locking bush 12 and the guide bush 13 have a stepped outer diameter. The section of the guide bush 13 with reduced diameter is constructed in two layers. An outer ring 20 is clamped onto an inner ring 19. The outer ring 20 is only used in conjunction with window sashes whose sash frames are made of wood. On wooden frames, the hole intended to accommodate the handle unit on the relevant sash beam can be drilled with relatively little effort without affecting the beam strength.

moderately large diameter. In the case of plastic windows, however, the diameter of the beam hole must be kept as small as possible for reasons of strength.

The outer diameter of the rotary locking bushing section with the larger diameter corresponds to the outer diameter of the inner ring 19 on the guide bushing 13. The outer diameter of the reduced diameter section of the rotary locking bushing 12 and the outer diameter of the neck bearing bushing 14 correspond to the inner diameter of the inner ring 19.

Starting from the assembly phase shown in Fig. 1, the handle unit 1 is inserted as a previously pre-assembled unit into the receiving hole 22 provided for this purpose on the wing spar 6. In doing so, the locking bolt 15 initially runs with its beveled front edge onto the facing edge of the receptacle 5 on the gear pinion 2. As the handle unit 1 continues to move in the insertion direction, the locking bolt 15 is pushed downwards against the effect of the locking spring 16 in Fig. 1 until it lies within the contour of the actuating shaft 10. During the continued insertion movement, the rotary locking bush 12 comes to rest with its end face facing the inside of the hole on the facing end face of the gear housing 3. The guide bush 13 penetrates with its reduced diameter bush section into the receiving bore 22 of the wing spar 6 and runs with a radial ring surface 21 onto the edge area of the receiving bore 22. At the same time, the inner ring 19 slides telescopically over the reduced diameter section of the

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Rotary locking bushing 12; the neck bearing bushing 14 is also guided telescopically inside the inner ring 19.

When the locking bolt 15 has finally passed the receptacle 5 on the gear pinion 2 in the insertion direction, it moves back into its initial position shown in Figs. 1 and 2 under the action of the locking spring 16, radially engages the gear pinion 2 on its side facing away from the manual operating handle 8 and thus secures the handle unit 1 in the axial direction against being pulled out.

As can be seen from Fig. 2, the gear pinion 2 is acted upon by the rotary locking bushing 12 on the side facing away from the locking bolt 15 under the action of the rotary locking spring 17. The locking projections 23 provided on the end face of the rotary locking bushing 12 facing the gear pinion 2 are in engagement with the locking receptacles 24 on the opposite wall of the gear housing 3 and together with them form the rotary locking device.

The guide bush 13 lies with its reduced diameter section inside the receiving bore 22 and is supported on the inside of the sash 6 via the radial ring surface 21, which acts as an axial stop. The guide bush 13 is acted upon by the compensating spring 18, which ensures that the radial ring surface 21 rests tightly on the sash spar 6. A residual gap between the radial ring surface 21 and the sash spar 6, which impairs the appearance of the window construction, is thus avoided. The axial direction of the

The play existing between the handle neck 9 and the guide bushing 13 of the actuating shaft 10 opens up the possibility of using the handle unit 1 shown in Figs. 1 and 2 on wing spars with varying thickness of the wing overlap in the axial direction of the actuating shaft 10. Even on wing spars with wing overlaps, the thickness of which in the axial direction of the actuating shaft 10 exceeds or falls short of the thickness of the wing overlap 7 according to Figs. 1 and 2, the compensating spring 18 ensures a tight fit of the radial ring surface 21 of the guide bushing on the outside of the respective wing spar, without the exact guidance of the individual parts of the handle unit 1 being impaired.

The rotary actuating device according to Figures 3 and 4 differs from the rotary actuating device shown in Figures 1 and 2 only in the design of the guide bush. As Figure 3 shows, in the final assembly position of the rotary actuating device, a handle unit 1a is inserted into a receiving bore 22a provided for this purpose in a wing spar 6a and is positively connected to a gear pinion 2a via an actuating shaft 10a. A guide bush 13a is supported by a radial annular surface 21a resting on the outside of the wing spar 6a. Metal anti-twisting pins 25 of the guide bush 13a engage in the wing spar 6a. The anti-twisting pins 25 are injected into the guide bush 13a, which is designed as a plastic injection-molded part, and protrude beyond its radial annular surface 21a with their pointed ends. When mounting the handle unit la on the wing spar 6a, which is shown in the above-

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described manner, the anti-twisting pins 25 penetrate into the wing spar 6a with their pointed ends when the ring surface 21a is pressed against the inside of the wing spar 6a. As can be seen from Figure 3 and in particular from Figure 4, the anti-twisting pins 25 in the final assembly position create a connection between the wing spar 6a and the guide bush 13a that is fixed against rotation in the direction of rotation of the actuating shaft 10a.

Figure 5 shows a rotary operating device on a plastic window. A handle unit 1b is fixed to a gear pinion 2b through a receiving hole 22b of a sash spar 6b made of plastic. A guide bush 13b is supported on the walls of the receiving hole 22b via an inner ring 19b. Since the receiving hole 22b, as is usual on plastic windows, has been drilled with a relatively small diameter, the guide bush 13b does not have an outer ring, as is usual on wooden windows. As can be seen in particular from Figure 6, in the final assembly position, anti-twisting pins 25b protrude beyond the guide bush 13b on a radial ring surface 21b with their pointed ends, with which they engage in the sash spar 6b. In this way, the anti-twisting pins 25b establish a connection between the guide bush 13b and the wing spar 6b that is non-rotatable in the direction of rotation of an actuating shaft 10b. Otherwise, the rotary actuating device according to Figures 5 and 6 corresponds to the rotary actuating devices described above.

Figure 7 shows a rotary operating device for wooden windows with a handle unit Ic, on which a manual operating handle 8c is connected to an operating shaft 10c via a clamping screw 26. The handle unit Ic is fixed in the manner described above to a gear pinion 2c by a receiving hole 22c of a sash spar 6c. The detachability of the connection between the manual operating handle 8c and the operating shaft 10c, which is made by means of the clamping screw 26, allows the manual operating handle 8c to be moved in the axial direction of the operating shaft 10c. Such a relocation of the manual operating handle 8c also makes it possible to adapt the handle unit Ic to changing depths of the receiving hole 22c. If the handle unit Ic is to be mounted, for example, on a wing spar whose overlap seen in the axial direction of the actuating shaft 10c is thicker than the overlap of the wing spar 6c shown, then after loosening the clamping screw 26 the manual actuating handle 8c can be moved to the left in Figure 7 so that the projection of the actuating shaft 10c is extended relative to the manual actuating handle 8c and a connection can still be established between the gear pinion 2c and the actuating shaft 10c.

Figures 8 and 9 show how a guide bush 13c of the rotary actuating device shown in Figure 7 is secured against undesired rotation in the direction of rotation of the actuating shaft 10c. For this purpose, several anti-twisting projections 27 are attached to an outer ring 20c of the guide bush 13c. The anti-twisting projections 27 run along the cylindrical

ary outer surface of the outer ring 20c in the form of a strip in its axial direction and have an essentially triangular cross-section. When assembling the handle unit Ic, the guide bush 13c is inserted into the receiving bore 22c as part of the handle unit Ic. In the process, the anti-twisting projections 27 of the outer ring 20c, which project radially beyond the diameter of the receiving bore 22c, dig into the inner wall of the receiving bore 22c. In this way, the guide bush 13c is connected to the wing spar 6c at its outer ring 20c in a rotationally fixed manner in the direction of rotation of the actuating shaft 10c. In order to prevent undesired twisting of the outer ring 20c relative to an inner ring 19c of the guide bush 13c, on the inner wall of the outer ring 20c facing the inner ring 19c in the axial direction ve) — End grooves 28 are provided in which anti-twisting projections 27' arranged on the outer wall of the inner ring 19c are supported. The anti-twisting projections 27' correspond in their design and course to the anti-twisting projections 27. If the handle unit 1c shown in Figure 7 on a wooden wing spar 6c is to be mounted on a wing spar made of plastic, on which the receiving hole for the guide bush has a relatively small diameter, the outer ring 20c can be pulled off the inner ring 19c. The guide bush 13c can then be inserted on the inner ring 19c into the receiving hole of the relevant plastic wing spar. The anti-twisting projections 27', which project radially beyond the receiving hole, are plastically deformed and thereby cause the guide bush to be clamped in the receiving hole. This

Clamp connection is also effective in the direction of rotation of the actuating shaft.

Claims (8)

- 19 - 20 869 Si/nu Expectations 1, rotary actuation device on a gearbox of a window, a door or the like with an actuation shaft (10, 10a, 10b, 10c) which can be connected to a drive element (12, 2a, 2b, 2c) of the gearbox through a recess (22, 22a, 22b, 22c) on a casement, which in the installed position passes through a guide bush (13, 13a, 13b, 13c) held in the recess (22, 22a, 22b, 22c) of the casement and on which on the side of the guide bush (13, 13a, 13b, 13c) facing the drive element (2, 2a, 2b, 2c) a rotary locking element (12) of a rotational direction of the actuation shaft (10, 10a, 10b, 10c) is held by a rotary locking device, characterized in that the rotary locking element (12) projects radially beyond the inner diameter of the guide bush (13, 13a, 13b, 13c). 2. Rotary actuating device according to claim 1, characterized in that on the outer surface of the guide bush (13, 13a, 13b, 13c) facing the inner wall of the recess (22, 22a, 22b, 22c) of the casement frame, at least one anti-twisting projection (27, 27') projecting radially beyond said outer surface is provided, by means of which the guide bush (13, 13a, 13b, 13c) is supported in the installed position on the inner wall of the recess (22, 22a, 22b, 22c) of the casement frame. 3. Rotary actuating device according to claim 1 or 2, wherein the guide bush (13a, 13b, 13c) has at least one axial stop (21, 21a, 21b) projecting radially beyond the recess (22, 22a, 22b, 22c) of the casement, characterized in that at least one anti-twisting pin (25, 25b) projecting beyond the axial stop (21, 21a, 21b) on the side facing the casement with a pointed end is pre-mounted on the axial stop (21, 21a, 21b). 4. Rotary actuating device according to one of claims 1 to 3, wherein the guide bush (13, 13a, 13b, 13c) has at least one axial stop (21, 21a, 21b) projecting radially beyond the recess (22, 22a, 22b, 22c) of the casement, characterized in that the guide bush (13, 13a, 13b, 13c) is guided on the actuating shaft (10, 10a, 10b, 10c) so as to be displaceable in the axial direction and is spring-loaded with pressure in the axial direction on the side facing away from the rotary locking element (12). 5. Rotary actuating device according to claim 4, characterized in that a helical spring (18) through which the actuating shaft (10, 10a, 10b, 10c) passes centrally is provided for the resilient pressure loading of the guide bush (13, 13a, 13b, 13c). 6. Rotary actuating device according to one of claims 1 to 5, wherein the rotary locking element (12) is designed as a rotary locking bushing (12) with a stepped outer diameter, characterized in that the outer diameter of the rotary locking bushing (12) on the side facing the drive element (2, 2a, 2b, 2c) is substantially the outer diameter of the guide bushing (13, 13a, 13b, 13c) and on the side facing the guide bushing (13, 13a, 13b, 13c) substantially corresponds to the inner diameter of the guide bushing (13, 13a, 13b, 13c), wherein the rotary locking bushing (12) is guided telescopically in the guide bushing (13, 13a, 13b, 13c) on the side facing the latter. 7. Rotary actuating device according to one of claims 1 to 4, with a manual actuating handle (8, 8c) which sits on a handle neck (9) on the end of the actuating shaft (10, 10a, 10b, 10c) facing away from the drive element (2, 2a, 2b, 2c), characterized in that at least one guide projection is provided on the handle neck (9) which runs in the axial direction of the actuating shaft (10, 10a, 10b, 10c) and guides the guide bush (13, 13a, 13b, 13c) in this direction. 8. Rotary actuating device according to claim 7, characterized in that the guide projection is designed as a neck bearing bush (14) which encloses the actuating shaft (10, 10a, 10b, 10c) concentrically with the guide bush (13, 13a, 13b, 13c) and is guided telescopically in the latter.