EP1061215B1 - Drive arrangement for an espagnolette lock - Google Patents

Abstract

The gear unit (11) is operated by a handle of a central lock and fits between a handle rosette and the central lock. A drive organ (16) fits on the shaft of the handle and co-operates with engagement elements (19,20) with parallel sliding intermediate parts (21,22) in a gear casing (12,13). Each intermediate part couples with a rod. When the drive organ is rotated from a locked to a rotating open position, the rods move out their lock pockets and couple with the intermediate part (21) for the lower rod, to enable further rotation of the drive organ in a tipping position, where the lower rod engages its lock pocket again and both rods can be brought back into their engagement position to move to the locked position. A coupling (32,34) is controlled according to the rotation position of the drive organ and couples the intermediate parts for common movement between the rotation and tilting positions and decouples them after return to the rotation position. An Independent claim is included for a cover profile for a rod lock with the gear unit.

Description

The invention relates to a transmission for a safety bar closure for installation between the cover on the operating handle of the actual closure and the (movable) spar of a wing.

A bar closure shows the DE-A 38 34 373 (Melchert ) . There, a device for actuating a drive rod closure is shown, with a below the handle handle extending housing (relining housing) and two locking rods (there 18, 19), which are controlled by a two control planes having nut N, which is in rotational driving with the handle handle , There it is required that the nut N is arranged with the two control planes between U-shaped slide contacts and has two diametrically opposed slots. The terminal slides are arranged overlapping, wherein each leg of the lower rod controlling connecting slide has a slot / pin control (there 31/32 and 52/53), see. there column 4, lines 15 to 39, column 7, lines 33 to 62 and column 8, lines 44 to 68, in particular lines 62/63. The Rückverlagerungsweg in the tilt lock the tilt position is in the prior art only about half of the Vorverlagerungsweges.

The DE-A 31 39 574 shows a rod closure with coupling to extend the sliding path of always rectified moving rods. Basically, a gearbox with bar lock is made of DE-A 10 21 270 known. The slider-like intermediate pieces and a slot / pin control belong to the prior art, as well as a nußartiges drive member.

The object of the invention is to increase the Riegelweg (or: Ausschubhub) in the tilted position or the Kippverriegelungsstellung. The object is achieved with the transmission according to claim 1, or with the method according to claim 15. In the transmission, the two on the vertical spar of the sash up or down sliding locking rods in and out of engagement with corresponding, mounted on the frame Locking pieces are brought. The movement takes place via the operating handle of a conventional central closure, which is (concealed) actuated at a turn / tilt wings between a closed position of the wing, a (middle) DrehOffenstellung and a tilted position.

The "positions" used for the description correspond to the wing and its regular locking linkage at its ends and the mountable bar lock (with gearbox). Both are coupled via the shaft of the actuating handle in their positions.

The lock bar gear is placed between a handle rosette and the surface of the sash and has a two-part housing in which a guide is provided for a particular nutty drive member which engages with lugs in corresponding openings of the housing halves and is stored in these. The drive member has a rectangular opening for receiving the shaft (axis) of the lever-type actuating element of the central closure.

In the housing side guides for displaceable intermediate rods are provided, which are arranged on both sides of the drive member and engagement elements which cooperate with corresponding tooth elements on the drive member, wherein the tooth-like elements of the drive member are arranged in two different, mutually parallel planes.

Uncouple a toothed segments of the lower level, the others remain engaged and also control via a handle-like coupling on the downwardly moving intermediate piece, the further movement of the dissolved from the meshing first intermediate piece also down. The handlebar is articulated on both sides and extends in strips between the articulation points.

Control slots (or grooves) guide the movement of the handlebar, which is a push-tilt movement.

The transmission may have a gear cover which cooperates with the mounting grooves provided in the corner region. It can be ensured that a U-shaped cover profile can cover the gear and locking bars and at the same time can be attached safely and shapely in the field of transmission. The attachment is done by engagement of the transmission behind the grooves of that flat side of the transmission, which rests on the wing surface, at the same time in the area of the handle rosette attachment of a provided there in the cover profile flattening is achieved, so that engaging at several points attachment can be achieved.

The cover may be configured of two profile pieces, so that it is divided into two parts. The resulting separation point is in the region of the center of the transmission, ie where the shaft (axis) of the handle extends through the cover and engages in the shaft receiving the drive member of the transmission (and the central closure). The bipartition simplifies the assembly and due to the aforementioned attachment of the cover profile, the separation point can be contracted frontally or clamped together so that no gap remains. The flattening provides a secure support for a wide variety of rosette designs, being made slightly larger than the largest rosette length to be used. In the remaining area, the cover can be bulged slightly U-shaped, to form a shapely cover.

The openings provided on both sides of the separation point serve for the passage of pin elements of the rosette, for attachment to the flat side of the transmission, wherein the pin elements pass through the opening into aligned receptacles of the transmission housing and thereby secured by clamping. Additional screws may be provided for further attachment. The openings may be surrounded by a stepped edge area.

Also, the gradation may have a lower ring portion, with which the cover rests satisfactorily on the flat side of the housing, held and guided by the penetrating pin member of the rosette.

The cover profile may have in two-part form larger recesses at the front ends, for receiving a pre-assembled rosette part.

Figur 1

ist eine perspektivische Ansicht einer zusammengefügten Einrichtung gemäß einem ersten Beispiel.

Figur 1a

ist eine Darstellung der drei Stellungen I, II, III des Hebels 4 am Flügel F bzw. 2.

Figur 1b

ist eine perspektivische Ansicht einer Einrichtung gemäß einem alternativen Beispiel.

Figur 2, Figur 2a

ist eine Ansicht der Stellung I im Getriebe 11 und am Hebel 4.

Figur 3, Figur 3a

ist eine Ansicht der Stellung II im Getriebe 11 und am Hebel 4.

Figur 4, Figur 4a

ist eine Ansicht der Stellung III im Getriebe 11 und am Hebel 4.

Figur 5

ist eine Ansicht einer Abdeckung für die zusammengefügte Einrichtung 11 von Figur 1a oder 1 b.

Figur 6

ist eine Ansicht einer Abdeckung im Griffbereich im Schnitt.

Exemplary embodiments explain and supplement the invention.

FIG. 1

is a perspective view of an assembled device according to a first example.

FIG. 1a

is an illustration of the three positions I, II, III of the lever 4 on the wing F and 2, respectively.

FIG. 1b

is a perspective view of a device according to an alternative example.

Figure 2, Figure 2a

is a view of the position I in the gear 11 and the lever. 4

FIG. 3, FIG. 3a

is a view of the position II in the gear 11 and the lever 4th

FIG. 4, FIG. 4a

is a view of the position III in the gear 11 and the lever 4th

FIG. 5

Figure 11 is a view of a cover for the assembled device 11 of Figure 1a or 1b.

FIG. 6

is a view of a cover in the grip area in section.

A gear 11 is placed between a handle rosette 4a and the surface of a sash F and has a two-part housing 12,13, as shown in Figure 1 can be seen.

Before explaining the transmission, the operation of the transmission will be explained with reference to the three to be described positions I, II and III, which should be done with reference to FIG 1a . There, a handle handle is provided as a lever 4, which is arranged approximately centrally on the vertical spar of a wing F. The closed position I can be seen in the right partial image, based on an angle α = 0 °. Starting from this position, the handle 4 is brought by 90 ° in the middle rotational position, which corresponds to the Drehoffenstellung II . This position with unlocked push rods is shown in the middle part of the picture. In the left part of the figure , the tilted position III of the wing (and the transmission) is shown, in which the handle 4 assumes a pivoting position α = 180 °. This position III shows an engagement of the lower locking bar in a lower latch pocket, plate or a lower striker, without a latch engagement takes place at the top of the wing.

The strokes ± z are clearly indicated by arrows. The stroke is designated H, the entire stroke 2H relates to the entire movement of the upper tie rod, in two sections from 0 to H and from H to 2H, according to the Angular positions α = 0 °, 90 ° and 180 °. The lower locking bar 10 exerts during this mentioned movement of the upper locking bar 8 an opposite movement, initially in the + z-direction upwards, for unlocking at α = 90 °. Thereafter for re-locking at α = 180 ° in the direction -z. The renewed locking engagement is provided with a stroke of H, while initially for unlocking from position I to position II of Entriegel-stroke also H was.

Based on this function, the positions I, II and III of the wing F also readily the gear 11 (or the rod lock with the gearbox) assign, even if the window and the central lock are not located there. Accordingly, the transmission also has a closed position (corresponding to the wing- closing position or the locking position), the gear has a rotational opening position , corresponding to the rotational opening position of the wing, and the transmission has a tilted position , based on the meaning of the tilted position of the wing in Position III of FIG. 1a. This definition of the "positions" is thus not with respect to the position of the transmission, but with respect to the relative arrangement of the individual parts in the transmission, as they are obtained when mounted on a corresponding wing at the corresponding wing positions.

In the housing, a receptacle 15 for a nußartiges drive member 16 is provided which engages with projections 18 in corresponding openings 14,14a of the housing halves 12,13 and is stored in these. The drive member has a rectangular opening 17 for threading the shaft of the lever-like actuating element 4 of the central closure. In the housing side guides 27,28 are designed as rods, displaceable intermediate pieces 21,22 provided on both sides of the drive member 16 and engagement elements 25,26 which cooperate with corresponding tooth-like elements 19,20 of the drive member, wherein the tooth-like elements of the drive member 16 are arranged in two different, mutually parallel planes, as is apparent in particular from Figure 1 and Figure 1b .

Each rod piece 21, 22 can be coupled for example via a coupling pin 23, 24 with an associated locking rod 8 or 10. For this purpose, the closure pieces, as can be seen again from Figure 1, formed in the transition region to the closure rod cranked. Alternatively, in the case of round locking rods 8, 10, the coupling can also take place through a bore with clamping screw K in a respective sleeve 22a, 21a in the intermediate pieces 22, 21, which additionally enables length adjustment of the locking engagement in the closing pocket, see FIG . 1b .

The bore in the sleeve as a vertically oriented rod holder is located outside of the transmission. It is not stronger than the height of the transmission, so that at least an elongated cover from the gearbox can be placed over the locking bars. A positive clamping of the cover 60,61 on (continuous) edge grooves 13a, 13b or 13a ', 13b' on the longitudinal sides of the gear housing 12,13 simplifies assembly, even with mounted handle.

The cover 60,61 is explained in more detail in Figures 5 and 6 , wherein initially on the cover should be discussed in more detail before the transmission is explained in more detail in its function. The cover is provided according to Figure 5 so that it is designed as a profile and on the gear 11 (or the gear housing 12,13) engages and also covers the protruding intermediate pieces 21,22 and the locking bars arranged thereon 8.10. Oriented to Figure 1b, the gear 11 is shown in Figure 5, without the locking bars 8.10. The cover consists of two profiled pieces 60,61, which are separated at a separation point T. This separation point T is shown in Figure 5 with a distance, which is no longer present after application of the Abdeckprofilstücke 60,61 on the housing 12,13 when the ends are pushed together. On both sides of the separation point flats 61 a, 60 a can be seen, which are taken together longer than the longitudinal extension of the rosette 4a. On the rosette 4a of the previously explained handle 4 is provided, protruding from a shaft piece 4b as a square, for engagement in the shaft receiving 17 of the drive member 16 and the central lock 3. With the placement of the rosette 4a and the handle 4 pin pieces 4c engage through openings 63b, 63a in the flats, for fixing the cover and for contracting the two-part cover at the separation point T. For this purpose, the pins 4c engage in recesses 64a, 64b according to FIG. 1b, which are provided in the transmission housing. A further provided recess 69 is slightly larger, preferably round, for the passage of the polygon 4b.

The openings 63a, 63b have a stepped edge region 61b, 60b, which is apparent from the detailed illustration of FIG . Here is a section of a mounted handle rosette with mounted cover 61,60 shown in cross section through the longitudinal plane of the transmission and the cover. The rosette 4a engages with the pin elements 4c through the openings 63a, 63b into the recesses 64a, 64b of the transmission. The cover can be seen with the flattening 61 a, in the area of the rosette 4a rests satisfactorily. The stepped edge portion 61 b has a cross-section Z-shape and a lower support area as well a steep step area that merges into the flat. The support area lies flush outside the opening 64a, 64b of the gear housing and is pressed by the rosette on the flat side of the transmission 11. In addition, a mounting bolt 71 may be provided, which protrudes through the gear housing and projects some of it. It is deformed for mounting the housing halves on the front.

The covers 60,61 are designed substantially symmetrical, on both sides of the separation point T and ranging from the gear 11 to the free ends of the locking bars near the latch pockets 5,6.

Such transmissions can also be covered by the cover, in which the rosettes 4 a of the grip handle 4 are firmly premounted. Then, the flattened ends of the two-part cover have larger recesses 68 so as to bypass the rosette, yet embracing, to integrate them into the cover. This larger recess 68 is shown by dashed lines in Figure 5. It is provided in both covers.

The one intermediate piece 22 in the gear 11 has at its free end a hinge pin 29 for a handlebar 30 which is threaded with the bore 31 on the pin 29 and at its other end has two projecting towards opposite sides pin 32,32a. The pins engage in mounted gear each in control slots 35,35a of the two housing halves 12,13, so that the handlebar 30 is movement-controlled in the movement of the intermediate piece 22 in a predetermined path. The other intermediate piece 21 has in the region of its coupling end a recess 34 which is arranged obliquely relative to the direction of displacement of the intermediate piece, wherein the inclined position approximately corresponds to an oblique portion 38 of the bent control slots 35,35a. The oblique slot portion 38 connects two mutually parallel but laterally offset slot portions 36,37.

Starting from the closed position I of Figure 2,2a of the actuating lever 4, the nut-like drive member 16 is moved from the position of Figure 2 in the position of Figure 3 upon movement of the actuating lever in the position II of Figure 3, 3a. It can be seen that the engagement elements of both planes 19 and 20 of the drive member are engaged with the respective rack portions 25,26 of the intermediate pieces. Both intermediate pieces are therefore moved directly in opposite directions directly from the drive member, the locking rods 8 and 10 toward each other and out of engagement be moved with the closing plates 5,6. As can be seen from Figure 3, the nußartige drive member passes when reaching the position of Figure 3 out of engagement with the toothing of the intermediate piece for the lower locking rod 10. The other intermediate piece, however, remains in engagement with the drive member. As further shown by a comparison of Figures 2 and 3, the pin 32 of the handlebar 30 has in the movement of Figure 2 of Figure 3, the sections 36 and 38 of the control slot 35 through.

At the same time as the intermediate piece 21 is displaced upward in this movement, the recess 34 has come into alignment with the oblique connecting slot 38, so that the coupling pin 32a could retract into the recess 34.

Now, if the operating lever 4 is pivoted from the position II of Figure 3 in the position III in Figure 4,4a , the intermediate piece 22 is further driven directly by the nut-like drive member, wherein the intermediate piece 22 is further driven with the locking rod 8 continues down. In this case, the handlebar 30 presses with its coupling pin 32a and the locking rod 10 down and drives them when reaching the position of Figure 4,4a in the lower closing plate 6 with the stroke H, while the upper locking rod 8 with respect to the upper closing plate 5 even further withdrawn as in Figure 4. Thus, only the lower locking bar 10 engages in the closing plate when the shutter is in the tilted position III.

The recess 34 has a driving and locking portion 34a which extends obliquely relative to the slot portion 37 and overlaps this slot portion on the path between the position of Figure 3 and the position of Figure 4. Thus, the coupling pin 33 is positively received in the recess 34 and locked during the movements in the slot portion 37. This means that in the declining movement of the operating lever 4 from the position of Figure 4 in the position of Figure 3, the intermediate piece 22 is moved from the nußartigen drive member pulling directly upwards, wherein over the handlebar 30 and the locking bar 10 is taken up until the position of Figure 3 is reached, in this position, the positive coupling between the handlebar 30 and intermediate piece 21 by lateral (oblique) dodging of the pin 32a repealed, while upon further rotation of the lever 4 of Figure 3 of Figure 2 again direct drive engagement between the drive member with its tooth plane 19 and the intermediate piece 21 takes place. In this return movement in the closed position and the lower locking rod 10 is driven directly by the drive member and opposite to the locking bar 8 is moved down so that both acting as locking rods locking rods 8,10 again engage in the associated closing plates or pockets 5 and 6, when the closed position of Figure 2 is reached.

From Figure 1 also more accurate dimensions and configurations of the rod-shaped intermediate pieces 21,22 and the setting of their respective end positions are visible. The corresponding surfaces 55a, 55b, 55c on the left side with respect to the intermediate piece 21 and the corresponding surface portions 56a, 56b, 56c on the right side with respect to the intermediate piece 22 provide substantially positive end stops. The one end stop of Figure 2 relates in the locked position with extended locking bars 8.10 a stop of the arcuate surface portions 56a and 55a on the correspondingly shaped outer surfaces 56b, 55b of the receptacle 15 for the drive member 16. At a distance from the surface pieces 55a, 56a on the rod-shaped intermediate pieces 21,22 at the other end of the respective tooth-shaped engagement 25,26 oppositely shaped arcuate pieces 55c, 56c provided in the rotational opening position II with respect to the intermediate piece 21 and in the tilted position III according to Figure 4 with respect to the intermediate piece 22 a stop with corresponding shaped outer surfaces 56b, 55b of the receptacle 15 of the drive member 16 define the end stop.

Between the arcuate pieces 55a, 55c and 56a, 56c, the toothing engagements 25 and 26 are provided at the intermediate pieces.

The guidance of the coupling pin 32a and the oppositely extending guide pin 32 on the handlebar 30 may also be designed so that a guide pin 32 (and 32 ') protrudes at both ends and in two opposite, congruent trained guide grooves 35,35a in two housing halves 12, 13 is performed simultaneously. Likewise, at the opposite narrow end of the gear housing, a mirror-symmetrically arranged guide slot 35b (as a groove or aperture) can be arranged on one side or on both sides. Such a trained housing according to Figure 1b allows the construction of a left or right-lying gearbox with the same parts to be used.

The control of the downward movement of the rod 10 by the elongate intermediate member 21 causes an upward / downward movement, while the upwardly facing rod 8 undergoes a steadily downward movement through the intermediate piece 22, from the locking position I over the Rotary opening position II to the tilt opening position III. As a result, this rod 8 or the toothing engagement of the teeth lying on the lower level 20 of the drive member 16 need not be interrupted by the rod-shaped intermediate piece 22 passing close to the drive member, but may remain in continuous engagement. The only reversal that takes place is the end of the tooth engagement on the upper level 20 of the drive member 16 with respect to the opposing tooth-shaped intermediate piece 21, however, this decoupling, so the beginning of the release of the tooth engagement according to Figure 3 at there tooth 20b shown there, connected to the virtually simultaneous engagement of the coupling pin 32a in the receptacle 34 with the associated receiving and driving surface 34a, so that the lower rod 10 is constantly guided and held.

Advantageous is the opposite movement, on the one hand of the handlebar 30 downwards, while a still existing tooth engagement between the tooth 20b and the engagement elements 25 and the receptacle 34 accommodates the coupling pin 32a. This allows a smooth transition of the movement stroke from upward in the direction + z to the downward movement in the direction -z in accordance with FIG. 3, with the movement stroke -z of the intermediate piece 22 continuously moving further downwards.

The assumption of engagement can be made so that after approximately α = 85 ° rotation angle of the tooth 20b starts from the toothing engagement of the rack 25 to solve and at 90 ° of the coupling pin 32a is inserted in the receptacle 34 and at least starts from the driving web 34a to be locked on its way down.

It is favorable in this arrangement also that the tooth 20b which is opposite to the tooth 20b which is opposite is in full, approximately central engagement in the toothed area 26 of the intermediate piece 22.

The aim of the reversal is to achieve the release of the left Zahnungseingriffes and the emergence of a firm but releasable coupling between the two intermediate pieces 21,22 for the further downward movement, controlled by the constantly remaining tooth engagement on the right side with little lots and little tendency to jamming of the transmission according to FIG. 3 (seen in plan view).

The arcuate limit stops 55a, 55b on the left side of FIGS. 4 and 56c, 56b on the right side form those reached for the tilted position End stops. This results in the distance between the respective arcuate stops 55a, 55c arranged on an intermediate piece on the intermediate piece 21 and 56a, 56c on the second intermediate piece 22, which differ by a factor of 2. The left intermediate piece has a distance of about H, corresponding to the stroke, which determines the depth of the locking engagement in the striker 6, while in the intermediate piece 22, the distance of the arcuate stops 2H, corresponding to the complete downward movement of the overhead rod 8.

The formation of the rod-shaped sections is provided with the described inwardly facing toothed engagement 25,26, while the outside of an approximately vertical contact surface 26a is formed, which is guided with two-sided web interference in guide slots 28 of the housing. In this way, a narrow design of the intermediate rod can be achieved, which allows a narrowed width on both sides of a reduced width of the transmission 11, with non-overlapping spacers in the transmission, so that the height can be reduced.

In the transmission according to claim 1 it relates to a gear for a bar closure for turn / tilt (F, 2), which closure latch pockets (5,6) for mounting resting on the frame (1) and cooperating with this, in opposite directions in engagement or disengageable latch or locking rods (8, 10) for attachment to the sash (2), wherein via a drive member (16) parallel to each other movable rod pieces (21; 22) are provided to these upon rotation of the drive member (16) from a first position (I) in a second position (II) parallel to each other but in opposite directions to move.

When or after reaching the second position (II), the lower closure rod (8) is decoupled from the drive member (16) and moves the lower rod piece (21) down again in the further rotation of the drive member (16) in the third position (III).

A - in dependence on the rotational position of the drive member (16) controllable - coupling member (32a, 30) is used for this purpose. Between the second position (II) and the third position (III) it couples the rod pieces (21,22) to a common downward movement.

Claims (19)

1. Gear for a rod closure for rotary/tilting casements (F, 2), which closure has locking pockets (5, 6) for attachment in resting manner on the blind frame (1) and locking or closure rods (8, 10) cooperating with the latter and which can be engaged or disengaged in opposite directions for attachment to the casement frame (2), wherein the gear (11)

   (a) can be actuated by an actuating element (4) of a central closure and can be attached between a handle rosette (4a) of the central closure and the surface of the casement frame;

   (b) has a drive element (16) which can be attached to a shaft of the actuating element (4), and which cooperates in driving manner (25, 26) with intermediate pieces (21, 22) guided displaceably parallel to one another in a housing (12, 13) of the gear (11) via engagement elements (19, 20);

   wherein in each case an intermediate piece (21; 22) can be coupled in each case with one of the rods (8, 10) in order to move the latter during a rotation of the drive element (16) from a closed position (I) to a rotary open position (II) in each case directly out from their closing engagements in the associated locking pockets parallel to one another but in opposite directions and when reaching the rotary open position (II), to uncouple the intermediate piece (21) for the lower rod (10) from the drive element (16) in order to engage the lower rod (10) again in the associated locking pocket (6) during the further rotation of the drive element (16) into a tilting position (III), and in order to initially unlock again during reversing of the drive element (16) and then to return both rods (8, 10) to their engagement position to realise the closed position (I), characterised by a coupling (32, 32a, 34) - which can be controlled as a function of the rotary position of the drive element (16) - and which

   (a) between the rotary open position (II) and the tilting position (III) couples the intermediate pieces (21, 22) for joint movement; and/or

   (b) after the return movement to the rotary open position (II), uncouples the intermediate pieces (21, 22).
2. Gear according to claim 1, characterised in that the intermediate pieces (21; 22) are arranged on both sides of a shaft recess (17) for an actuating axis (4b) to the central closure and have elongated engagement sections (25; 26) having a different number of in particular tooth-like engagement elements.
3. Gear according to claim 1, wherein the drive element (16) has in each case a different number of engagement teeth (19, 20) arranged on the periphery for cooperation with tooth-like sections (25; 26) of the intermediate pieces (21; 22).
4. Gear according to one of the previous claims, wherein the one intermediate piece (21) has a lower number of engagement elements and has a coupling recess (34, 34a) close to its end which can be coupled to the lower rod (10), into which coupling recess (34, 34a) a movable coupling element (30, 32, 32a) engages, which is provided on the facing end section of the other intermediate piece (22), in order to achieve a positive coupling of both intermediate pieces (21, 22) when reaching the rotary open position (II) - starting from the closed position (I).
5. Gear according to claim 4, characterised in that the movable coupling element (32a, 32, 30) has a guide (30) hinged on the intermediate piece (22) - which can be coupled to the upper rod - and which has at its free end, pins (32, 32a) projecting to each side, of which the one (32a) is a coupling pin engaging into the coupling recess (34, 34a) of the other intermediate piece (21), whereas at least one further pin (32) is designed as a guide pin, which is in constant engagement with at least one guide slot (35, 35a) of the gear housing (12,13).
6. Gear according to claim 5, characterised in that the at least one guide slot (35, 35a) is designed to be bent, in particular has a section (38) running at an angle and an outer section (37) approximately aligned with an imaginary extension of the lower rod (10) and an inner section (36) parallel thereto approximately aligned with the associated intermediate piece (22).
7. Gear according to claim 6, characterised in that the coupling recess (34, 34a) which is open at one end runs at an angle to the longitudinal direction of the gear housing (12, 13) and runs approximately parallel to the slot section (38) running at an angle and connecting the two parallel slot sections (36, 37).
8. Gear according to one of claims 4 to 7, wherein the coupling recess (34, 34a) has a blocking section (34a), which partly covers the outer section (37) in the region of the outer section (37) of the guide slot (35) and blocks the coupling pin (32a) against release, at least as long as it is situated in the lower region of the outer section (37).
9. Gear according to claim 8, in which the blocking section (34a) only facilitates release of the pin (32a) when the latter comes to rest in the region of a bend with respect to the inclined section (38) of the guide slot (35).
10. Gear according to claim 9, in which the blocking section (34a) is matched to the peripheral position of the engagement elements (19) of the drive element (16) engaging in the intermediate piece (21) - being released from the pin (32a) - so that there is always support or guiding of the intermediate piece (21) in order to avoid its uncontrolled slipping through.
11. Gear according to claim 5, wherein the pin (32a, 32') engaging in the recess (34, 34a) is designed as a double pin in order to also engage in a further guide slot (35a) of the gear housing (12, 13).
12. Gear according to claim 1, wherein at least one of the intermediate pieces (21, 22) is extended in order to project from the gear housing (12, 13) and to have a sleeve (22a, 21a) on the end to receive the associated closure rod (8, 10).
13. Gear according to claim 1, wherein on the edge side, in particular in the corner region of at least two of the longitudinal edges of the housing (12, 13), grooves (13a, 13b; 13a', 13b') are provided for positive or non-positive attachment of a cover (60, 61) for the gear (11) and the closure rods (8, 10).
14. Gear according to claim 1, wherein a cover profile (60, 61) of U-shaped cross-section has a flat section (60a, 61a) in the region of the handle rosette (4a) and is joined to the housing (12, 13) at its longitudinal sides (13a, 13b) and in the region of the flat section, in particular non-positively and/or positively.
15. Drive process of a rod closure for a rotary/tilting casement (F, 2), which closure has locking pockets (5, 6) for attachment in resting manner on the blind frame (1) and locking or closure rods (8, 10) cooperating with the latter and which can be engaged or disengaged in opposite directions for attachment to the casement frame (2), wherein rod pieces (21; 22) which can be displaced parallel to one another can be actuated via a drive element (16) in order to move the latter from a position (I) to a second position (II) parallel to one another but in opposite directions during one rotation of the drive element (16) and

    (a) on or after reaching the second position (II), to uncouple the rod piece (21) for the lower closure rod (10) from the drive element (16) and during a further rotation of the drive element (16) to move the lower rod piece (21) downwards into a third position (III);
    or

    (b) when reversing the drive element (16) from the third position (III), to move the lower rod piece (21) upwards in order to initially unlock and then to return both rod pieces (21, 22) in opposite directions to the first position (I);

    characterised by a coupling element (32a, 32, 30) - which can be controlled as a function of the rotary position of the drive element (16) - and which

    (A) between the second position (II) and the third position (III), couples (34, 32a) the rod pieces (21, 22) for joint downward movement;
    or

    (B) during a return movement from the third position (III) into the second position (II), uncouples (32a, 34) the rod pieces (21, 22).
16. Process according to claim 15, wherein the cover (60, 61) is divided into two (T) and is designed to be essentially symmetrical on both sides of the recess (17) of the drive element (16), wherein at a distance from the point of separation (T) in the region of the flat sections (60a, 61a), in each case one opening (63a, 63b) is provided for receiving pin elements (4c) of the rosette (4a), which engage in flush openings (64a, 64b) on the housing, to clamp together or tighten the ends of the cover (60, 61) at the point of separation (T).
17. Process according to claim 16, wherein the openings (63a, 63b) have a stepped edge region (61b, 60b).
18. Process according to claim 15, wherein the housing (12, 13) has a bolt piece (71) projecting from the housing at least on one of its flat sides close to one of the openings (63a, 63b), for end-side deformation and compressing assembly of the housing halves.
19. Process according to claim 15, wherein the cover profile is divided into two and has at the point of separation (T), recesses (68) orientated to both sides, and which is adapted to the size and shape of a pre-assembled rosette.

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