EP3314078B1 - Gearing for a fitting assembly of a window, a door, or the like - Google Patents

Description

The present invention relates to a transmission for a fitting arrangement of a window, a door or the like. A transmission according to the preamble of claim 1 and a transmission according to the preamble of claim 3, for example EP 2 692 969 A1 known.

Such transmissions serve, in particular, to transmit an adjusting movement, for example a handle of the window, the door or the like, to a fitting arrangement, in particular a fitting element of the fitting arrangement. For example, the handle between different positions can be rotated, wherein the transmission derives this adjusting movement to a displacement of a drive rod of the fitting assembly. In this way, locking elements coupled to the drive rod may be inserted into or removed from respective associated closure members to lock or release the window, door or the like. In this case, the transmission, for example, a nut member which is rotatable about an axis of rotation and in particular with the handle coupled so that it can be driven by the handle to a rotational movement about the axis of rotation. The rotational movement of the nut element can then be derived directly to an adjustment of the fitting element, that is about to a displacement of a drive rod, for example, by a peripheral portion of the nut member cooperates with the Treibstrange.

The transmission can thus drive-coupling the handle with the fitting arrangement, in particular with a drive rod of the fitting arrangement, so that an adjustment of the handle in a specific adjustment direction to a corresponding Moving the drive rod leads and an adjustment of the handle in an opposite adjustment direction leads to an opposite displacement of the drive rod. However, this drive-effective coupling of the handle with the drive rod by the transmission also have the consequence that, conversely, an outgoing from the drive rod adjustment is transmitted by the transmission to the handle. Such an adjustment movement originating from the drive rod can take place, for example, during a manipulation attempt, for example when an attempt is made to open the window, the door or the like in an unauthorized manner, such as from the outside.

In order to prevent the possibility of such manipulation, separate additional closing mechanisms may be provided on the window, door or the like of the transmission, which may for example be actuated only by means of a key and which are suitable for mounting the fitting assembly e.g. to lock in a locked position. However, such locking mechanisms are complex and increase the cost of the fitting arrangement.

It is an object of the invention to provide a gear for a fitting assembly of a window, a door or the like, which provides a cost-effective way to increase the security of the window, the door or the like against manipulation attempts.

The object is achieved by a transmission with the features of claim 1 and by a transmission with the features of claim 3.

The transmission according to the invention comprises a housing and a nut element movably mounted in a nut receptacle of the housing, which is drivingly coupled to a fitting element, in particular a drive rod, the fitting arrangement, wherein the nut element between a release position, in which it is rotatable about a housing-fixed axis of rotation, and a blocking position, in it is locked in at least one direction of rotation against rotation about the axis of rotation, is displaceable radially to the axis of rotation, and wherein the nut member is adapted to be placed in the locking position when it is in the release position and from the fitting element to a Movement is driven in the aforementioned direction of rotation.

In this way, the transmission is adapted to transmit an outgoing from the nut element adjusting movement through the gearbox to the fitting element, but in the reverse direction but not allow (as in a manipulation attempt) emanating from the fitting element adjusting movement. This is achieved in that, when the nut element is moved from the fitting element to a movement into an e.g. the window or the door opening rotational direction is driven, this drive movement of the fitting element initially (or at least also) causes the nut element is set in the locked position. In the blocking position, the nut element can then not be driven further in the aforementioned direction of rotation, since it is locked against rotation in this direction. The transmission is thus designed to be self-locking against an outgoing movement of the fitting element.

Since an adjustment of the nut element between the release position and the blocking position corresponds to a radial offset to said axis of rotation, the release position and the locking position differ in particular with respect to their distance from the axis of rotation. The nut element is therefore arranged differently eccentric to the axis of rotation in the two positions, wherein it is preferably arranged concentrically in the release position to the axis of rotation. As a result, the possible rotational paths of the nut element differ in the two positions. This makes it possible to provide blocking means which lock the rotational position corresponding to the blocking position, but not the release position corresponding.

The release position and the locking position of the nut member are to be understood solely based on its radial orientation to the axis of rotation. The nut element is not fixed in these positions but also in principle to a certain rotational position. In particular, the nut element in the release position can take a variety of different rotational positions relative to the axis of rotation.

The fact that the nut element in the release position is rotatable about the axis of rotation, means that the nut element can be rotated about the axis of rotation at least within a certain "free" rotation angle range, wherein the free rotation angle range is not necessarily full 360 °. In particular, it may be at least about 180 ° so that the nut element is e.g. in an adjustment of a coupled to the nut member handle from a vertically downward position in a vertically upward position passes through the entire possible rotation angle range.

In contrast, the rotation angle range, within which the nut element can be rotated in its blocking position about the axis of rotation, limited. The fact that the nut member is locked in the locked position against rotation about the axis of rotation, does not necessarily mean that in the locked position no rotation about the axis of rotation is possible, even if this is preferred. In principle, it is possible for the nut element in the blocking position to be locked against rotation only insofar as the rotation angle range for rotation about the rotation axis in the blocking position is limited relative to the said "free" rotation angle range of the release position. In this case, the restricted rotation angle range preferably comprises less than a third, in particular less than a quarter of the free rotation angle range.

Furthermore, the nut element is not necessarily displaceable in each rotational position between the release position and the locked position. However, at least in one of its possible in the release position rotational positions, the nut member is radially displaceable in the locked position, in particular to protect just this rotational position against a manipulation emanating from the fitting element. In the opposite direction, however, the nut element is preferably displaceable radially into the release position in each rotational position (of the restricted rotational angle range) possible in the blocking position from the blocking position.

Advantageously, the housing has a stop surface against which the nut element strikes when it is in the locking position and is driven to move in said direction of rotation, wherein the stop surface is oriented such that on the one hand the rotation of the nut member in the locking position limited, when the nut member is driven by the fitting member to move in said direction of rotation, and that on the other hand, the nut member from the locking position leads to the release position when a torque is applied around the axis of rotation on the nut member.

The abutment surface can thus form just said blocking means, which is arranged within one of the blocking position basically corresponding eccentric rotational movement path of the nut member and thereby restricts its rotational movement in at least one direction of rotation or even blocks absolutely. In contrast, in the release position, the abutment surface does not oppose rotation of the nut element, since the rotational movement path corresponding to the release position runs past the abutment surface and is therefore not blocked by the abutment surface.

A particular advantage results in particular from the mentioned spatial orientation of the stop surface. Namely, by a suitable orientation, the abutment surface can not only rotate the nut element along one of the Lock position corresponding rotational path to lock the axis of rotation, but also lead the nut member from the locked position to the release position. Advantageously, it is precisely this orientation that makes it possible to "distinguish", as it were, whether there is a manipulation attempt and which of the functions mentioned exercises the stop surface accordingly. It is important that the locking takes place at least when the nut member (as in particular in a manipulation attempt) is driven starting from the fitting element to an adjustment, and that but when a regular operation of the transmission takes place, the blockage also canceled is done by the nut element is guided to the release position.

A regular operation is in particular present when the nut element is driven exclusively to rotate about the axis of rotation, thus essentially only experiences a torque around the housing-fixed axis of rotation. This is the case, for example, when a handle coupled to the nut element is rotated or pivoted about the axis of rotation. On the other hand, in the case of an adjustment starting from the fitting element, the nut element is not driven exclusively centrally about the axis of rotation, but rather tangentially to it. In this case, translational forces then also act on the nut element, which in particular just lead to the nut element being displaced from the release position into the blocking position or, when the nut element is already in the blocking position, the nut element (stronger) is urged against the stop surface and is blocked by this, but can not be passed on the stop surface.

Although in an outgoing from the fitting element adjustment from a tangential power transmission and torques can result. However, if the nut element is in the blocking position (eccentric to the axis of rotation), then these are not torques about the named axis of rotation, so that the nut element by these torques - unlike by a torque around the axis of rotation - is not released from the locked position. In particular, the stop surface can be aligned obliquely with respect to a radial direction to the axis of rotation. The abutment surface is offset further with a radially inner end region in the direction of rotation to be blocked than with a radially outer end region. From a radial orientation, the orientation of the stop surface may differ by, for example, 30 ° to 45 °. In this case, the angle is preferably just chosen so that the resulting forces exerted by the nut member on the stop surface, depending on whether the nut member substantially exclusively receives a torque about the axis of rotation or is acted upon by the fitting element, due to the inclination of the stop surface be displaced a displacement of the nut member in the release position or be absorbed by the stop surface blocking.

In this way, the transmission by means of the appropriately aligned stop surface so to speak "distinguish" independently, whether the nut member regularly (starting from a handle) or irregularly (in particular starting from the fitting element) is driven to an adjustment, and depending on the adjustment allow movement or block.

The stop surface may cooperate, for example, with a coupling portion of the nut member, with which the nut member abuts against the stop surface when it is in the blocking position and is driven to move in said direction of rotation. Such a coupling portion may be provided anyway, for example, for the rotatable mounting of the nut member and be stored in a corresponding guide portion of the nut holder. In particular, respective coupling sections may be provided on axially opposite sides of the nut element, which interact with respective guide sections of the nut receptacle for supporting the nut element.

At at least one such guide portion may then be formed said stop surface.

Thus, by a suitably matched to each other training of the coupling portion and the guide portion at the same time a storage, a guide and a blocking of the nut member can be implemented in a particularly simple and compact manner.

Regardless of the abutment surface described, the nut member advantageously has a coupling portion which cooperates with a guide portion of the nut receptacle to lock the nut member in the locked position against rotation about the rotation axis in said rotational direction, wherein the coupling portion and / or the guide portion formed symmetrically is / are. The coupling section and / or the guide section are, in particular, the above-described coupling section or the guide section described above.

In this case, the coupling section and / or the guide section can be rotationally symmetrical with respect to an axis of symmetry parallel to the axis of rotation. For the guide section, the axis of symmetry can coincide with the axis of rotation. Correspondingly, for the coupling section in the release position of the nut element, its symmetry axis coincides with the housing-fixed axis of rotation.

The coupling section and / or the guide section can also or alternatively be designed mirror-symmetrically with respect to a (respective) plane of symmetry parallel to the axis of rotation. In the case of a mirror-symmetrical guide section, the plane of symmetry may be aligned in particular perpendicular to the direction of the radial displaceability of the nut element and / or to a direction of movement of said fitting element the fitting element can be driven by the nut element. In addition, the axis of rotation can lie in the plane of symmetry. In the case of a mirror-symmetrical coupling section, the plane of symmetry is in a rotational position of the nut element in which it can be displaced radially between the release position and the blocking position, in particular parallel to this radial displaceability. In addition, a central axis of the nut element parallel to the axis of rotation can lie in the plane of symmetry.

A symmetrical design of the coupling portion of the nut member and / or the guide portion of the nut holder according to one of the embodiments described above has the advantage of a comparatively simple design. The symmetry may also be useful in the assembly of the transmission, such as when a wrong assembly is already precluded or at least less likely that parts of the transmission may be connected to other parts because of their symmetry in several possible orientations. This is the case in particular if, moreover, the nut element is designed to be mirror-symmetrical with respect to a mirror plane aligned perpendicular to the axis of rotation or the central axis of the nut element.

A symmetrical design of the coupling portion of the nut member and / or the guide portion of the nut receptacle may also allow the nut member in the locking position to lock in two opposite directions of rotation about the axis of rotation and / or provide more than one locking position, as will be explained below.

According to the invention, the coupling section is formed on the nut element as an extension extending in the direction of the axis of rotation, which is substantially cylindrical with a cylinder axis parallel to the axis of rotation and a radius varying in the circumferential direction, wherein a lateral surface of the coupling section cooperates with the guide portion to lock the nut member in the locked position against rotation about the axis of rotation in said direction of rotation. In particular, a respective such coupling portion may be provided on both axial sides of the nut member, so that the two coupling portions extend in opposite directions. The nut element is mounted in particular in the nut receptacle by means of the coupling section or the coupling sections. A respective coupling portion can therefore at the same time the storage of the nut member in the gear housing and - in cooperation with the said guide portion - the function according to the invention of blocking an outgoing of the fitting element adjusting the transmission.

As a further development, or independently of the embodiment described above, the coupling section may be formed on the nut element as an extension extending in the direction of the axis of rotation with a peripheral circumferential surface which has at least one radial engagement projection with which the nut element is attached to a guide section Stop surface strikes when it is in the locked position and is driven to move in the direction of rotation. This stop surface may in particular be the stop surface already described above. The locking of the nut member in the locking position against rotation in said direction of rotation takes place in this case in the interaction of the engagement projection with the stop surface. The stop surface is advantageously fixed to the housing, in particular as part of the housing, and thus blocks particularly reliably the nut element which abuts against it.

In this case, the engagement projection may also abut against the abutment surface with a counter-abutment surface formed on the engagement projection, wherein the abutment abutment surface is preferably oriented substantially parallel to the abutment surface during abutment. In this case, the counter stop surface (in the Locked position of the nut member) with respect to a housing-fixed axis of rotation radial alignment be aligned obliquely. In particular, the counterstop surface can in this respect essentially be configured correspondingly to the stop surface.

According to a development, the engagement projection is formed by an angular range of the coupling portion with a substantially constant radius, to one side, preferably to the two sides, the radius decreases in a first angular range by a certain amount and in a second, compared to the first angle range larger Angular range, in particular by the same amount, increases again. Incidentally, the radius is preferably constant. It is also possible for a plurality of such engagement projections to be provided, for which then the corresponding can apply. As a result of the decrease in radius in the first angular region, it is possible in particular to precisely form the said counterstop surface.

In principle, a plurality of counter stop surfaces can be formed on an engagement projection, for example in the circumferential direction on both sides of the engagement projection. Such an engagement projection can then serve to lock the nut element in its blocking position in two opposite directions of rotation. For example, the transmission may be designed such that one of the counterstops of the engagement projection locks the nut element in the locked position against rotation in one direction of rotation and another counterpart stop of the engagement projection locks the nut element in a further blocking position against rotation in the opposite direction of rotation.

Each preferred angular range is 40 ° to 50 ° for the engagement projection, 5 ° to 10 ° for said first angular range and 45 ° to 70 ° for said second angular range. In addition, the radius of the coupling portion in the first angular range preferably decreases by about 5% to 25%. This one Radius reduction takes place from the engagement projection, said percentages are based on the (substantially constant) radius of the engagement projection.

According to an advantageous embodiment, the guide portion at least one with respect to the rotation axis radial engaging recess into which an engagement projection of the coupling portion, in particular an engagement projection as described above, engages when the nut member is in the locked position. Said abutment surface can then be formed for example by a side surface of the engagement recess. The engagement recess is in particular formed at least substantially complementary to the engagement projection, so that it can be received at least almost flush in the engagement recess. Advantageously, when the nut member is in the locked position, an engagement projection or other portion of the nut member engages the engagement recess.

In this case, the engagement recess is preferably designed as a recess which is radial with respect to the axis of rotation, so that side surfaces of the engagement recess can also be aligned at least essentially radially. Such an engagement recess in the guide section of the nut receptacle can advantageously provide the space required for a radial displacement of the nut element into its locking position and, on the other hand, block the nut element partially received therein against rotation in the mentioned direction of rotation.

According to an advantageous development of the nut member between said release position, said locking position and a further locking position in which it is locked in at least one direction of rotation against rotation about the axis of rotation, radially to the axis of rotation displaceable, wherein the further locking position of said locking position preferably is radially opposite. The said locking position and the further locking position are thus aligned in particular with respect to the axis of rotation straight diametrically to each other. In the direction of rotation, in which the nut element is locked in the further blocking position against rotation, it may be the same direction of rotation, in which it is locked in said blocking position. Preferably, however, it is just the opposite direction of rotation.

In particular, a radial displacement of the nut element in the aforementioned blocking position can only be possible if the nut element occupies a specific (to be secured against a manipulation attempt) or only a slightly different rotational position. If a further blocking position is provided, the nut element can be correspondingly radially displaceable in this further blocking position only if it assumes a further definite or only slightly different rotational position. Thus, more than just a rotational position can be secured by the automatic locking function according to the invention against an outgoing from the fitting element adjustment. The said and the further rotational position can in particular be exactly 180 ° different from each other, which can be achieved, for example, by a symmetrically designed as described above guide section.

According to an advantageous embodiment, the guide section can have a further engagement recess which is radial with respect to the axis of rotation and into which the engagement projection of the coupling section engages when the nut element is in the further blocking position. In principle, a plurality of engagement projections can also be provided on the coupling section, wherein each engagement projection can be assigned at least one engagement recess (in particular one respective other). In this embodiment, however, two engagement recesses for the same engagement projection are provided on the guide portion of the nut receptacle, depending on the rotational position of the nut member in a radial Placing the nut element in the corresponding blocking position in the one or the other engagement recess engages.

In the embodiments described above, respective engagement protrusions are formed on the coupling portion of the nut member and respective engagement recesses are formed on the guide portion of the nut receptacle. In principle, however, the transmission can also be configured in the opposite direction, so that respective engagement projections on the guide section of the nut receiver and respective engagement recesses on the coupling section of the nut element are formed. The invention accordingly also relates to such embodiments.

According to a particularly preferred embodiment, the housing is formed from two identical housing parts which are mutually aligned in the direction of the axis of rotation, wherein the nut element is mounted between the two housing parts. The gear can then be made very easy because not two different housing parts must be made. For example, the same mold and / or tools can be used for both housing parts. The use of identical housing parts is particularly advantageous in connection with a symmetrically formed nut receptacle or at least one symmetrically formed guide section of the nut receptacle.

The two housing parts may have connecting means for mutual connection. In particular, the housing parts can be connectable by mutual insertion. For this purpose, a plug portion and a complementary socket portion, in particular mirror-symmetrical to a mirror plane through which the axis of rotation extends, may be formed on a respective housing part, so that the plug portion of one housing part can be coupled to the socket portion of the other and vice versa.

Furthermore, it is advantageous if the nut element has a toothed section for the drive-effective coupling with the fitting element. The toothed section is formed in particular in a peripheral region of the nut element. In principle, the nut element for adjusting the fitting element can be designed in many different ways and coupled to the fitting element. A particularly simple and at the same time reliable adjustment-effective coupling of the nut element with the fitting element results when the nut element engages with the toothing section in the fitting element, in particular a drive rod of the fitting arrangement, at least in regions. For this purpose, a counter-toothing can be provided on the fitting element. Alternatively, the fitting element of the fitting arrangement can be formed at least in regions as a conductor structure, so that the toothed section of the nut element can cooperate with rung portions of the conductor structure.

According to an advantageous embodiment, the nut element has a polygonal receptacle, in particular a square receptacle, e.g. for a handle of the window, the door or the like. By such a polygonal recording a reliable positive connection can be achieved in the transmission of torque about the axis of rotation of the handle on the nut member. The polygonal receptacle can also be designed to permit a radial displacement of the nut element between the release position and the (or a respective) blocking position, without the handle also being displaced radially.

For this purpose, the polygonal recording in particular have a trapezoidal or rectangular cross section with edge pairs of different lengths. Such forms allow said positive connection for the transmission of torque, but at the same time leave a displaceability of the nut element, in particular along the orientation of the respective longer edge pair, relative to the handle to. By a trapezoidal shape of the polygonal recording a certain rotational play of the nut member relative to the handle can be provided. This may be useful, for example, to avoid friction that might inhibit the displacement of the nut member into the locked position. However, such a game in the direction of rotation is not mandatory.

Fig. 1

zeigt eine Ausführungsform des erfindungsgemäßen Getriebes in einer perspektivischen Explosionsdarstellung.

Fig. 2A und 2B

zeigen die in Fig. 1 dargestellte Ausführungsform in einer Teilaufsicht bzw. einer Schnittdarstellung mit dem Nusselement in einer Freigabestellung.

Fig. 3A und 3B

zeigen die in Fig. 1 dargestellte Ausführungsform in einer Teilaufsicht bzw. einer Schnittdarstellung mit dem Nusselement in einer Sperrstellung.

The invention will be explained in more detail by way of example only with reference to the figures.

Fig. 1

shows an embodiment of the transmission according to the invention in a perspective exploded view.

FIGS. 2A and 2B

show the in Fig. 1 illustrated embodiment in a partial supervision or a sectional view with the nut member in a release position.

FIGS. 3A and 3B

show the in Fig. 1 illustrated embodiment in a partial supervision or a sectional view with the nut member in a locking position.

Like the exploded view of the Fig. 1 The embodiment of a transmission 11 according to the invention shown therein essentially comprises three parts: Two identically designed housing parts 13 ', 13 "form the housing 13 of the transmission, and between the housing parts 13, 13" a nut element 15 is provided.

The two housing parts 13 ', 13 "are aligned along an axis of rotation D in the opposite direction to each other, so that they with a respective inner side 17 to the other housing part 13', 13" back and with a respective outer side 19 from the respective other housing part 13 ', 13 ". The inner sides 17 and the outer sides 19 are aligned perpendicular to the axis of rotation D.

In a central region of the inner side 17, through which also passes the axis of rotation D, in each case a part of a nut holder 21 is formed, in which the nut member 15 is mounted, when the two housing parts 13 ', 13 "with their inner sides 17 are connected to each other The nut receptacle 21 is bounded on both outer sides 19 by a respective bottom 23, in which a passage opening 25 is formed to the respective outer side 19, through which an unillustrated handle can be coupled to the nut element 15 for common rotation about the axis of rotation D. The through-opening 25 has a circular cross-section and is arranged such that the axis of rotation D extends perpendicularly through the center thereof Since the housing parts 13 ', 13 "are of identical design, a handle can be selected from the side of the one or the other housing part 13'. , 13 "are coupled by a respective passage opening 25 with the nut member 15.

From the bottom 23 extends in the axial direction of the respective part of the nut holder 21 almost completely enclosing wall, which forms a guide portion 27 of the nut holder 21. The nut holder 21 consequently has two such guide sections 27 (on each housing section 13 ', 13 "). Both guide sections 27 are mirror-symmetrical to a plane of symmetry S, through which the axis of rotation D also extends, so that the guide sections 27 of the two are mutually aligned oppositely aligned housing parts 13 ', 13 "aligned.

In the guide section 27 of a respective part of the nut holder 21, a respective engagement recess 29 is formed on both sides of the plane of symmetry S. This is a radial depression, ie a section the guide portion 27 which extends radially further away from the axis of rotation D as adjacent thereto areas of the guide portion 27th

The two engagement recesses 29 of a guide section 27 are arranged diametrically with respect to the axis of rotation D. The peripheral side edges of the engagement recess 29 form stop surfaces 31 (see. Fig. 2B and 3B ) to which a engaging in the engaging recess 29 element strikes when it is rotated in the corresponding rotational direction about the rotation axis D.

The nut member 15 has a base body 33, which is formed at least substantially in the manner of a circular disc of certain thickness. In this case, a plurality of indentations 35 are provided in a peripheral region of the base body 33, through which a toothed portion 37 of the nut member 15 is formed, which extends approximately over half the circumference of the nut member 15 and its "teeth" are formed by the areas between two respective notches 35 (see also Fig. 2A and 3A ).

A central axis M, which extends perpendicularly through the cross-sectional center of said base body 33, is aligned parallel to the axis of rotation D and falls in the in Fig. 1 and 2 shown radial alignment of the nut member 15 with the axis of rotation D together. In the axial direction, substantially cylindrical extensions which form coupling sections 39 of the nut element 15 extend on both sides of the nut element 15. In this case, the respective axial extent of the coupling sections 39 is smaller than the thickness of said base body 33. The coupling sections 39 are arranged in particular coaxially with the central axis M of the nut element 15.

The radius of a respective coupling portion 39 is not constant but varies. As a result, an engagement projection 43 is formed in a lateral surface 41 of the respective coupling section 39, which delimits the latter circumferentially Radius is substantially constant and is limited in the circumferential direction on both sides, in particular in a symmetrical manner by a respective radius reduction. The mentioned radius reductions form counterstop surfaces 45 (cf. Fig. 2B and 3B ) of a respective coupling portion 39 and can cooperate with a respective one of said abutment surfaces 31, when the engagement projection 43 engages in an associated engagement recess 29, as shown in FIGS Fig. 2 and 3 will be explained.

The engaging projection 43 of the one coupling portion 39 and the engaging projection 43 of the axially opposite coupling portion 39 have the same angular orientation with respect to the center axis M. Thus, as shown, the nut member 15 may be mirror-symmetrical with respect to a plane of symmetry perpendicular to the center axis M and extending centrally through the body 33.

The engagement projections 43 are further aligned with respect to the central axis M just diametrically to the said toothed portion 37. Overall, therefore, the nut element 15 may, as shown, also be mirror-symmetrical with respect to a further plane of symmetry, which comprises the central axis M and is aligned radially in the direction of the engagement projections 43.

In the nut member 15, a square socket 47 is further formed for coupling with the square of a handle (not shown). The square receptacle 47 has as a cross section a rectangle with edge pairs of different lengths. The two longer edges of the rectangle are aligned parallel to the radial orientation of the engagement projections 43, that is parallel to the above-mentioned further plane of symmetry.

The square receptacle 47 is arranged eccentrically with respect to the center axis M of the nut member 15. In this case, the central axis M extends perpendicularly through the center an imaginary square, from which said rectangle may be formed by expansion in the direction opposite to the engagement projections 43 radial direction. A square cross-section square, whose edge length substantially corresponds to the length of the shorter edge pair of the right corner, can therefore be accommodated both coaxially and eccentrically with respect to the central axis M in the square receptacle 47, independently of each of which a positive connection of the handle with the nut member 15th is achieved in the direction of rotation. In particular, this is the nut member 15 relative to the handle radially displaceable between a coaxial position and an eccentric position, wherein the coaxial position forms a release position and the eccentric position forms a locking position of the nut member 15, as will be explained below.

To connect the two housing parts 13 ', 13 "to each housing part 13', 13" a plug portion 49 and a socket portion 51 are provided as mutually complementary connection means. The plug portion 49 extends as an elongated extension perpendicularly from the inner side 17 of the respective housing part 13 ', 13 "away, while the socket portion 51 is formed as a substantially having the same cross-section as the plug portion 49. In this case, the plug portion 49 and the socket portion 51 arranged with respect to the plane of symmetry S corresponding points, so that the plug portion 49 of a housing part 13 'in the socket portion 51 of the other housing part 13 "is inserted and vice versa, when the two housing parts 13', 13" are interconnected.

In this case, no further connection means are required for connecting the two housing parts 13 ', 13 "to each other, so that the respective plug section 49 and / or the respective socket section 51 can be designed to latch in order to prevent the housing parts 13', 13" from being detached from one another. But such a backup can not be required if, for example, at a mounting of the transmission 11 on the wing of the window or the door, the fasteners already used for this purpose, the housing parts 13 ', 13 "inevitably hold together.

On one side of the housing 13 (in the figures below) there is provided a longitudinal guide 53, which is formed proportionally in both housing parts 13 ', 13 ".This longitudinal guide 53 serves for receiving and longitudinally displaceable mounting of a fitting element (not shown) designed as a drive rod. The longitudinal guide 53 is formed tangentially to the nut receptacle 21, the toothed section 37 of the nut element 15 protruding into the longitudinal guide 53 (cf. Fig. 2A and 3A ) to engage the drive-effective coupling with the fitting element in a conductor structure of the fitting element.

In this way, rotation of the nut element 15 can lead to the fitting element being displaced in the longitudinal guide 53. Conversely, however, by a displacement of the fitting element in the longitudinal guide 53, a force can be applied to the nut element 15 via the toothed section 37. In contrast to a rotary actuation of the nut element 15 by means of said handle, for example, by a mere torque about the axis of rotation D, this force is tangential and can therefore lead to a radial displacement of the nut element 15 oriented initially coaxially to the axis of rotation D, as hereinafter in particular on the basis of Fig. 2 and 3 is explained.

The Fig. 2 and 3 also show in Fig. 1 illustrated embodiment of the transmission 11 in the assembled state. These differ FIGS. 2A and 2B of the FIGS. 3A and 3B only with regard to the different rotational position and different radial position of the nut member 15. So that the recorded in the nut holder 21 nut member 15 is visible in the Fig. 2A and 3A only one of the housing parts 13 ', 13 "is shown in each case the interaction of the coupling portions 39 with the guide portions 27 also show the Fig. 2B and 3B Sectional views, the sectional plane in each case passes through the coupling portion 39, which in the Fig. 2A and 3A shown in plan coupling section 39 is axially opposite.

In the FIGS. 2A and 2B is the nut member 15 with respect to its radial alignment with the axis of rotation D in its release position. In this, the central axis M of the nut member 15 coincides with the housing-fixed axis of rotation D. (In the Fig. 2 and 3 the axis of rotation D and the central axis M are aligned perpendicular to the plane of representation.) As in particular in the sectional view of Fig. 2B 1, a (maximum) outer diameter of the lateral surface 41 of the coupling section 39 lying in the sectional plane essentially corresponds to a (minimum) inner diameter of the guide section 27 of the nut receptacle 21 lying in the sectional plane.

The outer surface of the outer surface, in particular in the region of the engagement projection 43 and in an opposite angular range, which extends approximately over half the circumference of the coupling portion 39. Of the mentioned inner diameter of the guide portion 27 differs substantially only in the region of the two engagement recesses 29 and a radial aperture 55 (see. Fig. 2B and 3B ) from the longitudinal guide 53 back. Overall, the mounting of the coupling section 39 on the guide section 27 thus allows the nut element 15 to rotate about the axis of rotation D in the illustrated radial release position.

The nut element 15 can therefore be made of the in FIGS. 2A and 2B shown rotational position by 90 ° in the in FIGS. 3A and 3B shown rotational position (initially without the in the FIGS. 3A and 3B shown additional radial offset) are rotated about the rotation axis D. Similarly, from the in FIGS. 2A and 2B shown rotational position also a rotation through 90 ° in the opposite direction of rotation possible. In this case, in each case as a result of the rotation of the nut member 15, the fitting element in the longitudinal guide 53 is driven to a displacement.

At the in FIGS. 3A and 3B shown rotational position of the nut member 15 is in particular a rotational position, which is to be secured against an outgoing of the fitting element manipulation attempt and, for example, corresponds to a closed position or Kippöffnungsstellung a wing of the respective window or door. When the fitting element in this rotational position of the nut member 15 in the direction of a FIGS. 2A and 2B shifted corresponding position, a tangential force is exerted on the nut member 15 via the toothed portion 37.

Both the formation of the coupling portion 39 of the nut member 15 relative to the guide portion 27 of the nut holder 21 and the formation of the square socket 47 allow in this rotational position but a radial displacement of the nut member 15 in the direction of the tangential force in the in FIGS. 3A and 3B shown radial locking position. By suitable design of the transmission 11 (in particular with regard to the friction), the transmission 11 can therefore be designed so that the nut element 15 is (as a result of the tangential force) displaced radially and thus reaches the blocking position.

As in FIGS. 3A and 3B can be seen, but engages in the locking position of the engagement projection 43 of the coupling portion 39 in the engagement recess 29 of the guide portion 27 and thus blocks rotation of the nut member 15 about the rotation axis D in the direction of FIGS. 2A and 2B shown rotational position. In particular, the counter-abutment surface 45 of the engagement projection 43 strikes against the abutment surface 31 of the engagement recess 29, which are complementary and then aligned in particular parallel to one another.

In this case, the stop surface 45 is advantageously aligned so that the resulting from the displacement of the fitting element force with which the counter-abutment surface 45 presses on the stop surface 31, perpendicular to the stop surface 31 or aligned such that the nut member 15 stronger in the locked position, but anyway is not pushed out of the locked position. Such alignment is present in the illustrated embodiment.

At the same time this orientation of the stop surface 31 is suitable, the force acting on the stop surface 31 when the nut member 15 undergoes at least substantially only a torque about the axis of rotation D to derive a pushing out of the nut member 15 from the locking position to the release position. For this purpose, the radially inner end region of the abutment surface 31 is offset from the radially outer end region of the abutment surface 31 in the direction of rotation to be blocked by the blocking position. In this way, the nut element 15, when it has been placed in the blocking position as a result of a manipulation attempt, is automatically returned to the release position by a subsequent regular (for example, outgoing from the handle) pure rotary operation and can then be rotated smoothly into the desired rotational position.

Characterized in that the guide portions 27 have two engagement recesses 29, the nut member 15 can be radially offset in two different rotational positions in a respective blocking position. In this way, several rotational positions can be secured against an outgoing from the fitting element adjustment of the transmission 11. The one (eg the in FIGS. 3A and 3B shown) rotational position against rotation in one direction of rotation (eg counterclockwise) be secured and the other rotational position can be secured against rotation in the opposite direction of rotation.

The symmetrical design of the housing parts 13 ', 13 "and the nut member 15 has the further advantage that the same gear 11 can be used regardless of its arrangement on a window or door, so for example both on the left side of a rotatable about its right side In addition, the assembly of the transmission 11 is facilitated, since the two housing parts 13 ', 13 "need not be distinguished and the nut member 15 barely reversed between the two housing parts 13', 13 "can be used.

The embodiment shown by way of example in the figures illustrates that the transmission 11 according to the invention can, as it were, "distinguish" in which direction an adjustment movement is to be transmitted through the transmission 11. In this case, the transmission 11 basically allows rotation of the nut element 15 and thus displacement of the fitting element, when the adjustment movement starts from the nut element 15 or from a handle coupled thereto and substantially corresponds to a torque about the rotation axis D. In the opposite direction, however, when the adjustment starts from the fitting element and this exerts a force on the nut member 15, the nut member 15 is automatically locked against rotation and thus reliably prevented (beyond the radial displacement of the nut member 15) displacement of the fitting element , In this way, the transmission 11 provides increased safety without the need for additional closing mechanisms to be provided on the transmission 11.

LIST OF REFERENCE NUMBERS

11

transmission

13

casing

13 ', 13 "

housing parts

15

nut element

17

inside

19

outside

21

latch receiving

23

ground

25

Through opening

27

guide section

29

engaging recess

31

stop surface

33

body

35

notch

37

toothed section

39

coupling portion

41

lateral surface

43

engaging projection

45

Thrust face

47

Square drive

49

male portion

51

bushing section

53

longitudinal guide

55

perforation

D

axis of rotation

M

central axis

S

plane of symmetry

Claims (15)

1. A gear (11) for a fitting arrangement of a window, of a door or the like, comprising a housing (13) and a nut element (15) which is movably supported in a nut receiver (21) of the housing (13) and which is drive-effectively coupled to a fitting element, in particular to a connecting rod, of the fitting arrangement,
   wherein the nut element (15) is movable radially to an axis of rotation (D) between a release position in which it is rotatable about an axis of rotation (D) fixed to the housing and a blocking position in which it is blocked against a rotation about the axis of rotation (D) in at least one direction of rotation;
   wherein the nut element (15) is configured to be moved into the blocking position when it is located in the release position and is driven by the fitting element to make a movement in said direction of rotation; and
   wherein the housing (13) has an abutment surface (31) which the nut element (15) abuts when it is located in the blocking position and is driven to make a movement in said direction of rotation;
   wherein the abutment surface (31) is aligned such that it restricts the rotatability of the nut element (15) in the blocking position when the nut element (15) is driven by the fitting element to make a movement in said direction of rotation and such that it guides the nut element (15) from the blocking position into the release position when a torque about the axis of rotation (D) is exerted onto the nut element (15),
   characterized in that
   a radially inner end region of the abutment surface (31) is moved further in said direction of rotation than a radially outer end region of said abutment surface (31).
2. A gear in accordance with claim 1,
   wherein the abutment surface (31) is formed at a guide section (27) of the nut receiver (21); and
   wherein the nut element (15) has a coupling section (39) by which the nut element (15) abuts the abutment surface (31) when it is located in the blocking position and is driven to make a movement in said direction of rotation.
3. A gear for a fitting arrangement of a window, of a door or the like, comprising a housing (13) and a nut element (15) which is movably supported in a nut receiver (21) of the housing (13) and which is drive-effectively coupled to a fitting element, in particular to a connecting rod, of the fitting arrangement,
   wherein the nut element (15) is movable radially to an axis of rotation (D) between a release position in which it is rotatable about an axis of rotation (D) fixed to the housing and a blocking position in which it is blocked against a rotation about the axis of rotation (D) in at least one direction of rotation;
   wherein the nut element (15) is configured to be moved into the blocking position when it is located in the release position and is driven by the fitting element to make a movement in said direction of rotation; and
   wherein the nut element (15) has a coupling section (39) which cooperates with a guide section (27) of the nut receiver (21) to block the nut element (15) in the blocking position against a rotation about the axis of rotation (D) in said direction of rotation;
   wherein the coupling section (39) and/or the guide section (27) is/are formed symmetrically,
   characterized in that
   the coupling section (39) at the nut element (15) is formed as a prolongation extending in the direction of the axis of rotation (D).
4. A gear in accordance with claim 3,
   wherein the coupling section (39) and/or the guide section (27) is/are formed with rotational symmetry with respect to an axis of symmetry in parallel with the axis of rotation (D).
5. A gear in accordance with claim 3 or claim 4,
   wherein the coupling section (39) and/or the guide section (27) is/are formed with mirror symmetry with respect to a plane of symmetry (S) in parallel with the axis of rotation (D).
6. A gear in accordance with at least one of the claims 2 to 5,
   wherein the coupling section (39) at the nut element (15) is formed as a prolongation which extends in the direction of the axis of rotation (D) and which is substantially cylindrical having a cylinder axis in parallel with the axis of rotation (D) and having a radius varying in the peripheral direction; and wherein a jacket surface (41) of the coupling section (39) cooperates with the guide section (27) to block the nut element (15) in the blocking position against a rotation about the axis of rotation (D) in said direction of rotation.
7. A gear in accordance with at least one of the claims 2 to 6,
   wherein the coupling section (39) at the nut element (15) is formed as a prolongation which extends in the direction of the axis of rotation and which comprises a peripheral jacket surface (41) which has at least one radial engagement projection (43) by which the nut element (15) abuts an abutment surface (31) formed at the guide section (27) when it is located in the blocking position and is driven to make a movement in said direction of rotation.
8. A gear in accordance with claim 7,
   wherein the engagement projection (43) is formed by an angular region of the coupling section (39) having a constant radius at whose one side, preferably at whose two sides, the radius decreases by a specific amount in a first angular range and increases again, preferably by the same amount in a second, larger angular range and is preferably constant for the remainder.
9. A gear in accordance with claim 8,
   wherein the engagement projection (43) comprises an angular range of 40° to 50°;
   wherein said first angular range amounts to between 5° and 10°; wherein said second angular range amounts to between 45° and 70°; and/or
   wherein said amount by which the radius decreases in the first angular range amounts to between 5% and 25% of the radius of the engagement projection (43).
10. A gear in accordance with at least one of the claims 2 to 9,
    wherein the guide section (27) has at least one engagement recess (29) which is radial with respect to the axis of rotation (D) and into which an engagement projection (43) of the coupling section (39) engages when the nut element (15) is located in the blocking position.
11. A gear in accordance with at least one of the preceding claims,
    wherein the nut element (15) is movable radially to the axis of rotation (D) between said release position, said blocking position and a further blocking position in which it is blocked against a rotation about the axis of rotation (D) in at least one direction of rotation, with the further blocking position preferably being radially opposite said blocking position.
12. A gear in accordance with claims 10 and 11,
    wherein the guide section (27) has a further engagement recess (29) which is radial with respect to the axis of rotation (D) and into which the engagement projection (43) of the coupling section (39) engages when the nut element (15) is located in the further blocking position.
13. A gear in accordance with at least one of the preceding claims,
    wherein the housing (13) is formed from two identical housing parts (13', 13") which are connected to one another aligned opposite one another in the direction of the axis of rotation (D), with the nut element (15) being supported between the two housing parts (13', 13").
14. A gear in accordance with at least one of the preceding claims,
    wherein the nut element (15) has a toothed arrangement section (37) for a drive-effective coupling to the fitting element.
15. A gear in accordance with at least one of the preceding claims,
    wherein the nut element (15) has a polygonal receiver (47), in particular a square receiver, for a handle of the window, of the door or the like; wherein the polygonal receiver (47) is configured to transmit a torque about the axis of rotation (D) from the handle to the nut element (15) and to permit a movement of the nut element (15) relative to the handle between the release position and the blocking position;
    wherein the polygonal receiver (47) in particular has a trapezoidal or rectangular cross-section comprising edge pairs of different lengths.

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