EP1216335A1

EP1216335A1 - Intermediate gear for window or door fittings

Info

Publication number: EP1216335A1
Application number: EP00949345A
Authority: EP
Inventors: Horst Loos
Original assignee: Siegenia Frank KG
Current assignee: Siegenia Aubi KG
Priority date: 1999-10-01
Filing date: 2000-07-14
Publication date: 2002-06-26
Anticipated expiration: 2020-07-14
Also published as: DE50008356D1; ATE280298T1; WO2001025576A1; EP1216335B1; AU6273600A

Abstract

The invention relates to an intermediate gear (1) for coupling a window handle (4) with a connecting rod fitting (13) with an offset axis of rotation. To this end, two wheels (6, 8) are provided, these wheels being coupled by a transmission device (9). The areas of the peripheral outer surfaces of the wheels that are coupled with said transmission device (9) are offset from each other in the direction of the wheel axes so that they overlap each other in a projection in the direction of the wheel axes.

Description

Intermediate gear for window or door fittings

This invention relates to a fitting part for a window or a door with a specially designed intermediate gear. For the sake of simplicity, only windows will be discussed below, although the invention also relates to doors.

The intermediate gear according to the invention is used to couple an operating element with which, for example, a wing of the window can be opened or closed by hand or switched to different operating states, with a locking device which serves to close the window but can also have other functions, for example that Switch between a tiltable and a swing-open operating state of the window. In general, this is a connecting rod gear with locking devices, however, the invention can also be carried out and makes sense with other, also simpler, locking devices. As a rule, the control element consists of a manually operated rotary handle.

The intermediate gear serves to bridge a transverse distance between two axes of rotation in the mechanical coupling of the operating element to the locking device. Such an intermediate gear is already known, for example from EP 0 505 678 A1. The intermediate gear explained there has a wheel that can be rotated about a first axis for coupling to the operating element, namely the window handle, and a second rotatable wheel for coupling to the connecting rod gear of the window. Both wheels can be rotated about a respective axis, the axes running parallel and offset from one another and perpendicular to the wing direction. By a transmission device, specifically two gears connected between the two wheels mentioned, which with teeth on the

Are circumferential outer surfaces of the wheels engaged, a rotary movement of the window handle is transmitted from one to the other wheel and from there to the drive rod transmission. This allows the Window handle the drive rod gear are operated, the axis of rotation of the window handle is offset parallel to the axis of rotation of a drive pinion of the drive rod gear.

The invention is thus based on a fitting part for a window or a door with an intermediate gear for coupling an operating element with a locking device, the intermediate gear having a first wheel rotatable about a first axis with a first coupling element for coupling to the operating element, and a second one a second axis, which is offset parallel to the first axis and rotatable wheel with a second coupling element for coupling to the locking device and a transmission device for coupling the first and second wheels to one another, which is coupled to the wheels in each case on a coupling region of the outer circumference of the wheel.

The invention aims to solve the technical problem of further improving this previously known fitting part.

According to the invention, it is provided that the respective coupling areas of the wheel circumferential outer surfaces are offset from one another in the direction of the parallel axes and overlap in the projection in the direction of the parallel axes.

Since the fitting part according to the invention is directly related to the function and design features of the window (or a corresponding door) provided with it, the invention is also directed to such a window or such a door.

Advantageous embodiments of the invention are the subject of the dependent claims.

The invention is based on the insight that there are difficulties in the known intermediate transmission described, a relative To combine a small distance between the two wheel axles with good mechanical properties of the intermediate gear. In order to achieve satisfactory functionality and resilience of the intermediate gear, a certain minimum size of the wheels in the radial direction is necessary, for example in order to be able to achieve a sufficiently large tooth pitch with a reasonable tooth size in the known gear. Furthermore, a minimum radial size is also important for an axial, preferably central attachment of a coupling element, in particular a shaft, for coupling the two wheels to the operating element or to the closure device. For example, as in the described prior art, a receptacle for a square pin as a coupling shaft can be provided in each wheel. On the other hand, the distance between the two wheel axles is fixed at a value of at least the sum of the largest occurring wheel radii. This is due to the fact that the areas of the outer wheel circumferential surfaces which are in engagement with the transmission device, specifically the gearwheels, are directly opposite one another, ie are at the same height in the direction of the parallel axes.

If now according to the invention an offset of these coupling areas

Wheel circumferential outer surface occurs in the axis direction which is so large that they do not interfere with each other when they overlap in the projection in the axis direction, the center distance can be reduced as necessary. It should be noted that the entire wheels or wheel circumferential outer surfaces do not have to be offset from one another. Rather, it is sufficient that the areas of the wheel circumferential outer surfaces coupled to the transmission device are offset from one another. However, if the wheels as a whole are offset from one another, the axis distance can also be selected smaller than the largest occurring wheel radius if the bearings of the two wheels are also designed on opposite sides and can thus be kept out of collision with the other wheel. Conversely, this means that practically any wheel radii are possible for a given center distance, in particular there are no longer any restrictions with regard to the size of recesses for coupling pins, tooth pitch and the like.

It is important here that the invention is not limited to the special design of the transmission device as intermediate gears. It is also not necessary for the first and second wheels of the intermediate gear to be gear wheels. Rather, the invention is directed to any wheels and transmission devices insofar as the transmission device couples the two wheels to one another by being coupled to a region of the outer circumferential surface of each wheel. It is only necessary to ensure that the function of the transmission device is not impaired by the axial offset of the two wheels. In the case of intermediaries

Gear wheels can be ensured by a corresponding width of the at least one gear wheel between the first and the second wheel. Then the interposed gearwheel can be in engagement with the coupling area of the wheel circumferential outer surface of the first and the second wheel in the position parallel to the axis.

According to a preferred embodiment, however, the invention is directed to a chain as a transmission device, which is also made so wide that it can be guided simultaneously around the coupling area of the outer circumferential surface of the first and second wheels. The coupling area of the first and the second wheel therefore only fill part of the width of the chain.

The chain has the advantage of easily transferring high torques with a simple construction of the intermediate gear. In addition, it is perpendicular to the axis direction and perpendicular to the connecting line between the two axes of the two with regard to the expansion of the intermediate gear Wheels save space than one or, as in the prior art described, two intermediate gears.

An alternative to the chain with comparable functions is a toothed belt. A timing belt is particularly light, durable and maintenance-free. The coupling between the wheels and the toothed belt and that between the toothed wheels and chains have in common that the coupling area is distributed over a substantial part of the circumferences of the wheel - although not necessarily flat. This represents a preferred variant of the invention.

Another possible embodiment of the coupling device consists in a hoop comprising the two gear wheels with an internal ring gear. The axis of symmetry of the hoop, at least that of the ring gear, is parallel to the axes of rotation of the gear wheels. The inner ring gear of the hoop meshes with the opposite outer areas of the ring gears of the gear wheels, similar to a planetary gear system. Overall, this construction can be carried out with a circular outer contour, which is advantageous in some situations with regard to the installation of an assembly opening. However, the coupling area does not include any significant part of the wheel circumference here either.

An important point of view is that with the invention in its various possible configurations, a coupling between the operating element and which maintains the direction of rotation is maintained without great technical outlay

Closure device is possible. This is interesting because in many cases a fitting is to be equipped with an intermediate gear according to the invention, which otherwise consists of conventional components. Then it would be uncomfortable for a user to get used to operating the fitting in the opposite direction. Rather, the aim is to ensure that the operator does not even notice the intermediate gear when using the fitting. Due to the large design of the two wheels made possible according to the invention, it is particularly useful in this invention to design the respective coupling elements of the two wheels for coupling to the operating element or the locking device as receptacles for axial shafts, in particular polygonal pins. The invention allows predetermined dimensions of such polygonal pins, in particular standard dimensions of fittings without an intermediate gear, to be used without having to maintain a certain minimum distance between the two axes. It is preferred that the wheels are each placed on the polygonal pin, the receptacle for the polygonal pin passing through the wheel. Based on the conventional solution mentioned, it would have been necessary to reduce the center distance by initially accommodating the pins in a receptacle that was axially offset from the toothed area of the wheel, because penetration of the toothed area by the receptacle would no longer have been possible for reasons of space.

According to the invention, the specific configuration of the intermediate gear can also relate to its own intermediate gear housing, which in the simplest case is designed as a stamped and bent part in which bearing bores for the wheels are provided. Bores for screw mounting can also be provided. An example of the simple form in which such a stamped and bent housing can be constructed is explained in more detail in the exemplary embodiments. The simplicity of the geometry, the material used, such as sheet steel, and the processing steps of stamping and drilling, result in significant cost advantages overall.

In this as well as in other configurations of the intermediate gear, it is preferred to give the wheels stop collars with which they can rest against the edge of a bearing bore in an intermediate gear housing, on the window sash or the like. This can be avoided that the coupling part of the wheels, such as the teeth of gears, and the transmission device, such as the chain or the belt, against the Intermediate gear housing, part of the wing or other parts of the window.

As already mentioned, the coupling between the second wheel and the locking device, for example the drive rod gear, is preferably produced by a polygonal pin. The polygonal pin can drive a coupling pinion of the drive rod transmission, which in turn is in engagement with a toothed rack or a similar device on the drive rod. Stability advantages can thereby be achieved if a housing of the intermediate gear has a receptacle for this coupling pinion. The coupling pinion can be mounted directly in the receptacle or in a drive rod gear housing, which in turn is accommodated with a part in the intermediate gear housing. Here too, reference is made to the exemplary embodiments.

From EP 0 492 341 B1, a locking mechanism for a double-leaf window has become known, in which the control element drives a pinion with a square, which meshes with a toothing of a driver which can be coupled to the locking device by means of a coupling device. The driver is essentially U-shaped in cross-section, the pinion being aligned parallel to the U-leg and cooperating with the first free leg, while the coupling device is provided on the second free leg.

On the one hand, a special locking gear is necessary, which can be connected to the intermediate gear with the aid of the coupling devices. Furthermore, the minimum axial offset to be compensated for is limited by the arrangement of the pinion in the U-leg by the radius of the pinion. It would certainly be possible to use an S-shaped one instead of the U-shaped cross-section of the driver, so that the pinion lies below the driver in the direction of the control element. However, this would increase the depth of the intermediate gear. An alternative arrangement of the fitting part according to claim 1 therefore provides that the wheels are gearwheels which mesh with a toothed rack which acts as a transmission device, the toothed rack having two toothings arranged in mutually offset planes.

The arrangement manages with only three movable links, which can be easily manufactured and assembled. The dimensions of the intermediate gear in the direction of the axis offset are only small despite the dimensions of the gears.

A further development provides that the rack is essentially L-shaped and the first toothing is provided on the inside of the first L-web and the second toothing on the head end of the second L-web. This enables a particularly space-saving configuration. Furthermore, deflection members for restoring the direction of rotation can be dispensed with. The resulting forces of the gearwheel connections are advantageously absorbed if the toothed rack is guided in a longitudinally displaceable manner in a housing, the first L-web resting on a housing wall. The rack is guided against the direction of the gear lifting forces. In particular, in order to be able to ensure satisfactory operation of the intermediate gear even after a certain period of time, it is provided that the housing can be closed by a cover which projects into the housing along the axis of the first coupling element up to the gearwheel. As a result, axial displacement of the gear and the penetration of dirt is avoided in a simple manner.

As already stated, the invention is also directed to a window (or a door) equipped according to the invention. The problem of the axis offset between an operating element, such as a turning handle, and a locking device, such as one

Espagnolette gearbox with drive pinion, occurs particularly in double-leaf versions without a mullion, in which one of the two wings overlaps the other inside. Here it is often desirable to change the position of the Determine the turning handle according to optical criteria, without taking into account the axis position of the drive rod gear. However, the invention can also be advantageous in other situations in which an operating element has to be attached in an axially offset manner, for example for ergonomic reasons or because the axial position of the locking device is covered by an overlapping element of a window or door frame, a wall and the like.

In the above example of the two-leaf design of a window or a door without a mullion, the mounting of the operating element on a blow bar covering the shadow gap formed between the two wings can be favorable. Here, the invention shows a special application, in that the intermediate gear is housed in a cavity of the blow bar. Because of the small center distances that can be achieved according to the invention, there is only a small space requirement in the direction of the center distance. When using a chain, a toothed belt or the guided rolling elements, a small extension perpendicular to the center distance and perpendicular to the axes can also be realized, so that optical advantages are also achieved by the possibility of mounting the intermediate gear or intermediate gear housing hidden by a rosette of the operating element can.

In the following, the invention is illustrated more concretely on the basis of various exemplary embodiments shown in the figures. Individual features are disclosed which can also be essential to the invention in other combinations.

In detail shows:

1 shows a fitting part according to the invention on a wooden wing spar in a sectional view with a horizontal sectional plane; 2 shows the fitting part from FIG. 1 in a sectional illustration with a vertical sectional plane perpendicular to the sash plane;

3 shows a detail of FIG. 1, but rotated through 90 °;

4 shows an individual representation of the two wheels and the chain of the fitting part from FIG. 1, the image plane being parallel to the sash plane;

5 shows a further individual illustration of the fitting part from FIG. 1 in a sectional illustration corresponding to FIG. 2;

6 shows a sectional illustration of a further exemplary embodiment for a fitting part according to the invention in a hollow plastic profile wing spar with a horizontal sectional plane;

7 shows a sectional illustration of the same exemplary embodiment as in FIG. 6 in a corresponding illustration, but in a different installation situation in another plastic hollow profile wing spar;

8 shows a sectional view of the intermediate gear from FIGS. 6 and 7 in a corresponding sectional view;

9 is a front view of the intermediate gear from FIG. 8, the image plane being parallel to the wing plane; and

10 shows a sectional view of the intermediate gear from FIGS. 8 and 9, the sectional plane being vertical and perpendicular to the wing plane.

Figure 1 1 a fitting part according to the invention on a wooden wing spar in a sectional view with a horizontal sectional plane; Fig. 12 is a fitting part according to the invention in a view from below with the lid open and

FIG. 13 shows a section along the line II-II in FIG. 12.

Figure 1 shows a fitting part according to the invention with an intermediate gear 1 on a vertical spar of a wooden window sash 2. This is the so-called main sash 2 of a double-leaf, middle-post window, which is equipped with a conventional tilt and turn fitting not shown in detail and with one shown in the figure Flapping bar 3 also overlaps a (not shown) secondary wing on the inside. On the blow bar 3, a rotary handle 4 is attached as an operating element, the symmetrical mounting of the rotary handle 4 on the blow bar 3 and the symmetrical position of the blow bar 3 with respect to the spar of the main wing 2 and the spar of the secondary wing, not shown, resulting in an aesthetically pleasing appearance ,

The rotary handle 4 has a square pin 5 which concentrically transmits a rotary movement of the rotary handle 4 and is inserted into a square receptacle 7 passing through a first wheel 6 of the intermediate gear 1 according to the invention. The first wheel 6 is a gearwheel for engaging in a chain 9. The chain 9 spans the first wheel 6 and a second gearwheel 8 arranged horizontally next to it, ie vertically above it in the sectional view from FIG. 1. The second gearwheel 8 is also penetrated by a square holder 11, in which a square pin 10 is inserted. The square seat 11 thus forms a second coupling element for coupling the second wheel 8 to a locking device. In the present case, this is done by means of the square pin 10, the free end 12 of which, facing away from the second wheel 8, engages in a coupling pinion (not shown here in more detail) of a drive rod transmission 13 shown schematically in FIG. The coupling pinion engages in a rack of the drive gear 13. So that is between the Handle 4 and the drive rod gear 13 a gear coupling is produced, which bridges the horizontal lateral offset (in the sectional view in Figure 1 vertical distance) between the first axis of rotation of the handle 4 and the square pin 5 and the second axis of rotation of the drive rod gear pinion and the square pin 10. If this center distance were not necessary, the square pins 5 and 10 would collapse and couple the connecting rod gear pinion directly to the handle 4.

Figure 2 shows the fitting part of Figure 1 rotated by 90 °

Sectional view. It can be seen that a rosette 14 of the handle 4 is used for the rotatable mounting of the square pin 5 and is fastened via holes 15 in the blow bar 3. In comparison of Figures 1 and 2 it can also be seen that the intermediate gear has a housing 16 in which the wheels 6 and 8 and the chain 9 are received. This housing 16 has an essentially cylindrical cross section in the viewing direction in FIG. 2 and external dimensions approximating an L shape in the viewing direction in FIG. One of the two legs of the L forms a receptacle (see FIG. 45 in FIG. 3) for a housing section 46 of the drive rod transmission 13. This region corresponds approximately to the left half of the horizontal part of the housing 16 in FIG. 1 and the left half of the circular section through the cylindrical shape in Figure 2. This section forms the intersection of the housing 16 with the fitting receiving groove 17 for the drive rod gear 13. As can be seen from Figure 1, the housing 16 is best assembled from the rabbet surface with the aid of holes and screws ,

The housing 16 with the intermediate gear 1 is shown in more detail in FIG. 3. It should be noted that the position of the housing 16 with the intermediate gear 1 in FIG. 3 is shown rotated by 90 ° in the image plane from the illustration in FIG. 1 in the same perspective. The receptacle for the connecting rod gear pinion just described is designated 45. In particular, Figure 3 shows that the first wheel 6 and the second wheel 8 have rows of teeth 20 and 21, respectively, which are offset from one another in the direction of the axes 26 and 27 of the two wheels 6 and 8, so that they lie side by side in the area between the wheels 6 and 8 in the axial direction. Accordingly, the rows of teeth 20 and 21 overlap in a projection in the direction of the axes 26 and 27 in this area. This leads to the fact that the center distance, designated 25, between the axes 26 and 27 is smaller than the sum of the largest occurring radii of the two wheels 6 and 8, namely as the sum of the distance between the axis 26 and the outer edge of the tooth row 20 and the distance between the axis 27 and the outer row of the tooth row 21. FIG. 3 further shows that this is made possible by a width (24 in FIG. 5) of the chain 9 that is well doubled compared to the width 23 of an individual tooth row 20 or 21.

In order to refer to the definition of the claims, the chain 9 couples the first wheel 6 and the second wheel 8 to one another as a transmission device by engaging a coupling area, namely the respective row of teeth 20 or 21. This coupling area is a section of the circumferential outer surface of the respective wheel. It is essential that the coupling area of the wheel circumferential outer surface for coupling to the

Transmission device, d. H. the chain, requires a radius that corresponds to the radius of the outwardly facing sides of the teeth. It is of course not necessary that the coupling part of the outer wheel circumferential surface has the radius which makes the axial displacement of the coupling parts necessary. A point with the relevant radius, which must be able to be rotated in the area between the first wheel 6 and the second wheel 8, is sufficient. In particular, the invention naturally relates to gearwheels and the like, in which the maximum radius occurs periodically several times.

FIG. 4 shows a top view of the two wheels 6 and 8 with the chain 9, in which it can be seen that the chain 9 covers the outer area of the wheel circumferential outer surfaces of the wheels 6 and 8 almost like an envelope and couples the two wheels together. In particular, it can be seen in FIGS. 3 and 4 that in this exemplary embodiment the invention was only used to the extent that the center distance was reduced by approximately one tooth height compared to a conventional solution. However, if the receptacles 7 and 11, which penetrate the wheels 6 and 8, ie the shaft of the wheels 6 and 8, are not arranged at the same height in the sense of the axial direction, the rows of teeth 20 and 21 can not only be against one another but also on the other wheel Reach past 8 or 6. As a result, the center distance 25 can be reduced approximately by a further tooth height. Finally, it is even conceivable that the wheel shafts delimiting the receptacles 7 and 11 are offset from one another, so that the center distance 25 can be reduced practically as desired. However, the exemplary embodiment shown here allows a solid and compact solution with regard to the extension of the intermediate gear in the axial direction for a predetermined, practically significant center distance 25 with standardized formats of the receptacles 7 and 11.

FIG. 5 shows a section through FIG. 4, as indicated in FIG. 4, and thus represents a reference to the illustration in FIG. 2. In particular, the receptacle 45 for the drive rod gear pinion can be seen in FIG.

FIGS. 6 and 7 show a further exemplary embodiment of the fitting part according to the invention in two different installation situations. The essential difference between the two exemplary embodiments resides in the more compact design of the second exemplary embodiment

Intermediate gear housing, which is designated 37 here (see FIGS. 9 and 10). It has no receptacle for the espagnolette gear, rather, FIG. 6 shows that the square pin connecting the second wheel with the espagnolette gear 13 emerges from the area of the intermediate gear and a housing section of the espagnolette gear 13 with the

Intermediate gear connects. This embodiment is particularly suitable for hollow profile spars made of metal or plastic, in the present case plastic. Here is the intermediate gear 1 in a cutout 35 under the blow bar 3 housed. The arrangement of the drive rod gear 13 is completely conventional. FIG. 7 shows that the compact design of the intermediate gear with space-saving housing 37 selected here enables the intermediate gear 1 to be accommodated in the blow bar 3. For this purpose, the blow bar 3 is designed as a hollow body in which a chamber 36 with sufficient space for the intermediate gear 1 is provided.

FIG. 8 shows an illustration corresponding to FIG. 3 of the intermediate gear with its housing 37. FIGS. 9 and 10 show two further views of this. From the representation of the bores 38 of the housing 37 in the

FIGS. 9 and 10 show that the intermediate gear is assembled by means of fastening screws of the rosette 14 both according to FIG. 6 and according to FIG. 7. For this purpose, the bores 38 can be provided with an internal thread.

The particular advantage of the variant according to FIG. 7 is that there is no need for cutouts in the spar, as are necessary according to FIG. 1 or FIG. 6. Only holes are necessary for the passage of the square pins 5 and 10. However, the variant according to FIG. 6 allows the use of a narrower and / or flatter blow bar 3.

The already mentioned housing 37 of the exemplary embodiment from FIGS. 6-10 consists of a stamped and bent part made of sheet steel, whereas the housing 16 of the first exemplary embodiment can best be realized as a die-cast part.

The stamped and bent part has a number of bends and holds the wheels 6 and 8 in a straight middle section 39 with the aid of bearing bores 40. Otherwise, the wheels 6 and 8 are held via the pins 5 and 10.

Finally, FIG. 8 (as also FIG. 3) shows collars 41 on the wheels 6 and 8, which prevent the chain 9 from resting against the intermediate gear housing 37, specifically at the edge of the bearing bores 40. Fig. 11 shows a fitting part according to the invention with an intermediate gear 1 on a vertical spar of a wooden window sash.

The first wheel 6 is a gear that meshes with rack 50. The toothed rack 50 has two toothings 53, 54 arranged in mutually offset planes 51, 52. For this purpose, the rack 50, as can be seen in FIG. 13, is essentially L-shaped, the first toothing 54 being provided on the inside of the first L-bar 55 and the second toothing 53 on the head end 56 of a second L-bar 57 is. The center distance 25 of the first axis 26 from the second axis 27 is dimensioned to be somewhat smaller than the diameter of the approximately equally sized gears 6, 8.

This is essentially achieved in that the

12, which are formed by the toothing and are offset with respect to one another in the direction of the parallel axes 26, 27 and thereby overlap in the direction of the parallel axes 26, 27, as shown in FIG. 12. The toothed rack 50 acting as the transmission device is essentially rectangular

Housing 58 is mounted so as to be longitudinally displaceable, the serrations 53, 54 on the opposite side of the L-web 55 causing a gearwheel lifting force which is essentially absorbed by a housing wall 59.

When the first gear 6 rotates, for example in

Counterclockwise, as shown in FIG. 12, the toothing on the gearwheel 6 and the toothing 53 of the toothed rack 50 acting as the transmission device are moved downward in the plane of the drawing. The second gear 8 is caused by the rotary bearing in the housing 58 and the common

Coupling area with the rack 50 is also set in a rotational movement, which is also carried out counterclockwise. The rack 50 therefore acts on the one hand as a means due to the selected arrangement to transmit the rotary movement without additional deflection members, which serve to maintain the direction of rotation, and on the other to create a transmission overlapping wheels.

As is clear from FIG. 13, the housing 58 can be closed by a cover 60. The cover 60 naturally has a bore for the passage of the axle 27 and also serves at least partially to accommodate the axles 26 penetrating the wheels 6, 8. These are generally formed by square pins which are used to adapt to tolerances in corresponding square receptacles of the wheels 6 , 8 sit. In order to prevent a displacement of the gear 6 in the axial direction, it can further be provided that the cover 60 projects in sections up to the gear 6 into the housing and thus supports the second gear 8.

Finally, it should also be mentioned that an elongated hole 61 is provided on the rack 50, which enables the axis 27 to pass through the gear wheel 8. Of course, devices for fastening to the main wing 2 and / or the rotary handle 4 are also to be provided on the housing 58, although these are not shown in the figures.

The second square pin 10 forming the second axis is received in a form-fitting manner in a second square receptacle 11 of the second gear wheel 8 and is assigned at its free end 12 to a pinion 62 of a drive rod gear 13. LIST OF REFERENCE NUMBERS

1 intermediate gear

2 main wings

3 blow bar

4 rotary handle

5 1. Square pin

6 1st gear

7 1. Square mount

8 2nd gear

9 chain

10 2. Square pin

11 2. Square pickup

12 free end of the wheel 8

13 drive rod gearbox

14 rosette

15 mounting holes

16 housing

20 rows of teeth

21 rows of teeth

22 chain bolts

23 Width of a row of teeth

24 chain pin width

25 center distance

26 1st axis

27 2nd axis

35 milling

36 chamber

37 housing

38 threaded holes

39 section of housing 37

40 bearing holes

41 stop collar admission

housing section

rack

level

Perforation

L-web

head

L-web

casing

housing wall

cover

Long hole

pinion

Claims

1. Fitting part for a window or a door with an intermediate gear (1) for coupling an operating element (4) with a

Locking device (13), the intermediate gear (1) having a first wheel (6) rotatable about a first axis (26) with a first coupling element for coupling to the operating element (4), a second one about the first axis (26) second staggered in parallel

Axle (27) rotatable wheel (8) with a second coupling element (11) for coupling to the locking device (13) and a transmission device (9) for coupling the first and second wheels (6, 8) to one another, which are connected to the wheels ( 6, 8) is each coupled to a coupling area (20, 21) of the wheel circumferential outer surface, characterized in that the respective coupling areas of the wheel circumferential outer surfaces are offset relative to one another in the direction of the parallel axes (26, 27) and project in the direction of the parallel axes (26, 27) overlap.

2. Fitting part according to claim 1, wherein the wheels are gears (6, 8) and the transmission device is a chain (9).

3. Fitting part according to claim 1, wherein the wheels are gears and the transmission device is a toothed belt.

4. Fitting part according to claim 1, wherein the wheels are gears and the transmission device has at least one gear.

5. Fitting part according to one of the preceding claims, wherein the first coupling element is a receptacle (7) for a polygonal pin (5) which is centered on the first axis (26).

6. Fitting part according to one of the preceding claims, wherein the second coupling element is a receptacle (11) for a polygonal pin (10), which is centered on the second axis (27).

7. Fitting part according to claim 6 or 7, wherein the receptacle (7, 11) passes through the wheel (6, 8).

8. Fitting part according to one of the preceding claims, wherein the intermediate gear (1) has a housing made of a stamped and bent part (37) with bearing bores (40) for the wheels (6, 8).

9. Fitting part according to one of the preceding claims, wherein the wheels (6, 8) stop collars (41) for abutment against the edge of a bearing bore (40).

10. Fitting part according to one of the preceding claims, in which the

Intermediate gear (1) has a housing (16) with a receptacle (45) for a coupling pinion of an espagnolette gear (13).

1 1. Fitting part according to claim 1, characterized in that the wheels are gears which mesh with a rack (50) which acts as a transmission device, the rack (50) having two toothings (53) arranged in mutually offset planes (51, 52) , 54).

12. Fitting part according to claim 11, wherein the rack (50) is substantially L-shaped and the first toothing (54) on the inside of the first L-web and the second toothing (53) at the head end (56) of the second L Webs (57) is provided.

13. Fitting part according to one of claims 11 or 12, characterized in that the rack (50) in a housing (58) is guided in a longitudinally displaceable manner, the first L-web (55) abutting a housing wall (59).

14. Fitting part according to one of claims 12 to 13, characterized in that the housing (58) can be closed by a cover (60) which extends along the axis (26) of the first coupling element (7) to

Gear (6) protrudes into the housing (50).

15. window or door with a fitting part according to one of claims 1 to 14,

16. Window or door according to claim 15 with a rotary handle (4) coupled to the first coupling element (7).

17. Window or door according to claim 15 or 16 as a double-leaf window / double-leaf door without a central post, the rotary handle (4) being attached to a first leaf (2) which overlaps the inside of the second leaf.

18. Window or door according to claim 17, in which / the rotary handle (4) is mounted centrally on a shadow gap between the wings (2) covering blow bar (3).

9. Window or door according to claim 18, in which the

Intermediate gear (1) is housed in a cavity (36) of the blow bar (3).