EP0589170B1 - Actuating rod fitting for windows, doors and the like - Google Patents

Abstract

What is proposed is an espagnolette fitting for windows, doors or the like, particularly a mortise-type edge mechanism 1, which consists of a cover rail 4, of an espagnolette 5 mounted displaceably behind the latter and of a mechanism housing 2 fastened fixedly to the cover rail 4, a pinion 3 then being mounted in the said mechanism housing 2 as a rotary drive member, the teeth of which pinion 3 cooperate with perforations of the espagnolette 5. It is essential, here, that the mechanism housing 2 be produced as one part from plastic, particularly plastic injection moulding, that the cover rail 4, together with spacers 12, 16 projecting at the rear and with at least one retaining plate 14 assigned to one end of the cover rail 4 and intended for a following cover-rail end, also be produced as one part from plastic, especially by injection moulding, and, at the same time, that the retaining plate 14 be connected to the cover rail 4 in a foldably movable manner by means of a so-called film-hinge material portion 15. <IMAGE>

Description

The invention relates to a connecting rod fitting for windows, doors or the like. In particular, it relates to a plug-in edge gear according to the first part of the main claim. In such fittings, drive rods are guided longitudinally displaceably behind a faceplate covering the hardware groove, on which e.g. Locking pins or the like are attached, which penetrate the faceplate in longitudinal slots and can bring about locking with associated frame components.

Fixed on the back of the faceplate is a housing in which a rotary drive element - usually in the form of a pinion - is mounted, the teeth of which work together with openings in the drive rod. The rotary movement of an operating handle is converted into a translational movement of a drive rod.

In some cases it is desirable to have plug-in edge gears available in which a translational movement of different locking members, e.g. at the bottom and at the top of a window or door wing, in opposite directions. For this purpose, the plug-in edge gears are then equipped with thrust reversing gears, which have two drive rods, which can be set in opposite movement by the hand lever actuation.

Insert edge gears of the specified type are known, for example, from DE-C-25 57 303 and EP-A-0 338 621. The one with the DE-C 25 57 303 proposed plug-in edge gear with reversal of thrust direction, the opposite movement of two drive rods is achieved by using two pinions, which have an axis position parallel to the plane of rotation of the actual drive member, the axes of rotation of which are parallel to the main plane of the window or Extend door leaf, in which the plug-in edge gear is installed. This results in the need to make each of the drive rods meshing with the two pinions rotated at least in sections by 90 ° to their normal installation level so that they can mesh with the pinions lying side by side in the fitting groove. This design of the drive rods requires considerable manufacturing effort and can often only be obtained by attaching additional parts to the usual drive rods.

EP-A-0 338 621 proposes a plug-in edge gear in which the reversing pinions of the thrust reversing gear are arranged on both sides of the drive member mounted in the gear housing. Apart from the fact that in this case the bearing points for the two reversing pinions are each only half-shell-like in each of the two longitudinally symmetrical halves of the gear housing and this results in increased assembly effort with reduced storage stability, it is also disadvantageous that the thrust direction reversal is achieved in order to achieve this each of the two drive rods is in engagement with the two reversing pinions via two toothings and a further toothing on a drive rod is required for interaction with the rotary drive member. The overall result is a very complicated configuration of the plug-in edge gear. A further complication results from the fact that the connection of the two halves of the gear housing with the faceplate must be made via an additional locking plate which has bayonet-like projections which come into active connection with complementary projections on the housing halves in order to bring about a locking of the gear housing on the faceplate . The projections of the housing halves are received in the side notches of the faceplate.

With DE-U-66 07 469 a plug-in edge gear has become known, which is a one-piece, e.g. has a gear housing made of a non-cutting stamped part. The attachment of the same to the faceplate is done by deforming, e.g. Riveting of material sections causes that protrudes from the gear housing and penetrate adapted openings in the faceplate. In this case, the gear housing has only an approximately semicircular bearing for the collars of the gear serving as the drive member, because the latter cannot otherwise be inserted into the preformed housing.

Also known from DE-U-78 11 092 is a plug-in edge gear, in which an approximately bow-shaped housing is used for mounting the rotary drive member. The latter is placed between mutually parallel webs projecting from the back of the faceplate, which on the one hand serve to guide the longitudinal rod of the drive rod and on the other hand have segment-shaped recesses with which they support a part of the circumference of the bundle of the rotary drive member, in particular drive pinion. The connection of the bow-like housing with the webs of the faceplate requires an additional operation and accordingly requires a corresponding additional effort.

DE-U-79 01 008 specifies a state of the art for the joint covering of the facing ends of faceplate rails, each of which is associated with connecting rod fittings to be installed adjacent to one another on a window or door leaf. An angled flap made of resilient material, which is fastened on one faceplate, is used as the joint covering, and is pressed into its final position against the spring action when a fastening screw is screwed in through the faceplate. The disadvantage here is that the tab made of spring material must be attached to the faceplate by a separate operation. The same also applies to the locking plate according to EP-B-0 006 439, which is movably mounted on the faceplate.

The aim of the invention is to provide a plug-in edge gear of the type mentioned, which avoids the aforementioned disadvantages of the prior art with the most cost-effective material selection and simple assembly. It is therefore proposed according to the invention a connecting rod fitting, which is characterized in that the housing of the transmission is made in one piece from plastic, in particular from plastic injection molding, and that on the faceplate with spacers projecting from the rear and at least one locking plate associated with one end of the faceplate for a subsequent faceplate end is made in one piece from plastic, in particular by injection molding, and that the locking plate is held in a hinged connection by a so-called film hinge material section with the faceplate.

This design results in a plug-in edge gear, in the production of which complex riveting processes or the like can be omitted. Instead, snap-snap connections between the components and / or functional parts are possible. The entire assembly of the gear unit can also be done in one direction, i.e. all parts are put together from the same side and the faceplate is then used as a cover-like closure. Snap-in recesses are shaped in the faceplate so that when they are inserted into the snap-in hook of the housing molded part, they are guided from the inner contour of the snap-in recess into their final snap-in position, from which they can then no longer be removed without damaging the faceplate or the snap-in hook.

According to another design feature, the gear housing has bores directed parallel to the bearing axis of the pinion serving as the drive member for receiving fastening screws for the bearing rosette of a pinion operating lever which have an angular, in particular hexagonal, cross section. The material displaced by self-tapping screws when cutting the thread can result as a result Avoid training in the polygon areas outside the screw diameter.

In some applications, namely when the drive rod edge gear works only with two switch positions for the drive rods, the pinion used as the rotary drive member manages with a toothing which only extends over an angular arc of 90 °. In such a case, it is then possible to keep the transmission housing closed in its rear, arcuate section, that is to say to provide it with a relatively thick wall, and thereby to achieve a considerable increase in the strength of the housing.

If a plug-in edge gear is equipped with a thrust reversing device, it is of great advantage if the reversing pinions are held in a stationary but rotatable manner by means of recesses made in the housing. The faceplate can then also have projections on its rear side, which are shaped such that they form a circular bearing each consisting of two bearing shells together with the recesses in the gear housing.

If two pinions are provided next to each other in the same axis direction when the plug-in edge gear is equipped with a thrust reversing device for reversing motion and are also arranged axially parallel to the rotary drive element, then the structural dimensions, primarily the overall length of the plug-in edge gear, can be reduced to a minimum. With this arrangement, it is also not necessary to arrange the drive rod sections meshing with the reversing pinions rotated by 90 ° to the normal alignment of the drive rod plane. This is not only advantageous for the construction of the tools used to manufacture parts. Rather, any additional parts required to form the drive rod areas which mesh with the reversing pinions can also be omitted. A simple manufacture of the drive rods as stamped and bent parts is possible.

According to the invention, there is also an advantage in that the unit of faceplate, locking plate and spacer can be produced in one operation - by injection molding. In a related design, it is possible to produce the molded part in question by overmolding a core component, in particular a metal component, previously inserted into the injection mold. A faceplate made of plastic can also be combined in this way, for example, with a locking plate made of metal.

According to a further feature of the invention, the gear housing has latching hooks which are assigned to one another in pairs on parallel walls. This ensures that the locking hooks hold the housing in connection with the faceplate without twisting. The locking edges of the locking hooks preferably point outwards. In this way it is achieved that, in the event of an uneven load on the gear serving as the rotary drive member, a tilting movement of the same and a resultant force component, which tries to push the housing apart, is used to help hold the gear housing on the faceplate.

It is also particularly advantageous if the lifting forces resulting from the reversing pinions can be absorbed by latching hooks located between them. This is particularly important if the teeth of the pinions and the toothed racks meshing with them are only a small height and therefore a minimal lifting of the teeth could lead to a malfunction.

It has also proven to be particularly advantageous for the durability of the plug-in edge transmission to produce the transmission housing from a plastic which contains a lubricant additive. Such plastics not only have a high surface hardness, but are also characterized by good wear behavior. For example, polyoximethylenes and polyamides can be used for this purpose.

According to a further embodiment, the spacers have locking projections on their longitudinal edges, which, together with the body of the spacer, penetrate an elongated hole in a drive rod and then lock behind it. The necessary elasticity for such a locking process is achieved by the material properties and the small wall thicknesses that result in the area of the through hole for the fastening screws. The diameter of this through-hole can preferably be selected such that any wall of the spacer that has collapsed inward is set back outward when the fastening screw is inserted into its original position.

Fig. 1

ein Einsteck-Kantengetriebe ohne die angrenzenden Bauteile in der Seitenansicht,

Fig. 2

einen Ausschnittbereich des Einsteck-Kantengetriebes nach Fig. 1 mit Schubrichtungsumkehr-Vorrichtung in vergrößertem Maßstab als Halbschnitt,

Fig. 3

den Ausschnittbereich des Einsteck-Kantengetriebes mit Schubrichtungs-Umkehr-Vorrichtung nach Fig. 2 in Explosionsdarstellung,

Fig. 4

einen Querschnitt des Einsteck-Kantengetriebes längs der Linie IV - IV in Fig. 2 durch die Befestigungsbohrung für einen - nicht dargestellten - Bedienungshandhebel und

Fig. 5

in weiterer Vergrößerung einen Schnitt längs der Linie V - V in Fig. 1.

The drawing shows an embodiment of the invention, namely

Fig. 1

a plug-in edge gear without the adjacent components in side view,

Fig. 2

2 shows a cut-out area of the plug-in edge gear according to FIG. 1 with a thrust reversing device on an enlarged scale as a half-section,

Fig. 3

the cut-out area of the plug-in edge gear with thrust reversing device according to FIG. 2 in an exploded view,

Fig. 4

a cross section of the plug-in edge gear along the line IV - IV in Fig. 2 through the mounting hole for a - not shown - operating hand lever and

Fig. 5

in a further enlargement a section along the line V - V in FIG. 1.

In Fig. 1, a plug-in edge gear 1 can be seen, which has a gear housing 2, a drive pinion 3 and a faceplate 4.

On the drive pinion 3, the rotary movement of a - not shown - operating hand lever is transmitted via a - also not shown - square mandrel. The rotation of the drive pinion 3 is then converted into a translational movement of a drive rod 5, which is guided in the gear housing 2 and on the faceplate 4. At least one locking pin 6 is attached to the drive rod 5, which in cooperation with a component attached to a frame ensures the locking of a window or door leaf in its closed position.

In the exemplary embodiment according to FIG. 1, a further drive rod 9 leads in the gear housing 2 and on the faceplate 4 and is intended to receive a thrust direction opposite to the drive rod 5. For the generation of an opposite direction of thrust for the two drive rods 5 and 9, two adjacent pinions are provided which mesh with the toothed ends 8 of the drive rods 5 and 9, which are arranged diametrically opposite the center of the reversing pinion 7.

The connection of the gear housing 3 with the faceplate 4 is made via locking hooks 10, which penetrate the corresponding recesses 11 of the faceplate 4 and then snap into place on the outside thereof.

The faceplate 4 is made in one piece and carries spacers 12 protruding from the rear for support on the base of a fitting groove provided in the sash profile. At least in the area of each spacer 12, fastening screws (not shown) for the plug-in edge gear 1 are also received in bores.

In a preferred embodiment of a plug-in edge gear 1, the faceplate 4 is also formed in one piece with locking plates 14 and is connected to it by a section 15 which has a substantially smaller cross section than the faceplate 4 and the locking plate 14. The selection of the material and the cross section for the section 15 ensures that it is a so-called film hinge can be used. Each locking plate 14 is first raised into a position with the aid of the film hinge section 15 for the purpose of mounting an adjacent fitting component (not shown), as is indicated by dash-dotted lines in FIG. 1. Then the locking plate 14 is then pressed down to bridge the joint between adjacent fitting components on the front. This prevents the neighboring components from being lifted or bent out.

Each locking plate 14 also has a spacer 16 on its underside, which is provided with a bore 17 for receiving a fastening screw (not shown). Furthermore, each locking plate 14 is also provided with a countersunk hole 17a for receiving a fastening screw, in such a way that it can expediently penetrate the adjacent fitting component and create a linkage with it.

2 and 3, a section of the plug-in edge gear 1 is shown on an enlarged scale. In particular, the polygonal passages 18 can be seen, into which self-tapping fastening screws can be screwed, which connect the bearing rosette of a hand lever (not shown) to the gear housing.

In the exemplary embodiment of a plug-in edge gear 1 shown in FIG. 2, the angle of rotation for the rotary drive element designed as drive pinion 3 and consequently also the angle of rotation for the hand lever are limited to 90 °. For this reason, the section of the gearbox housing 2 in the form of a segment of a circle can be provided with a rear wall 19, which increases the overall stability and offers the toothless peripheral section of the drive pinion 3 an additional abutment.

However, if the plug-in edge gear 1 is equipped with a drive pinion 3 designed for a hand lever movement of 180 °, then the Rear wall 19 is eliminated. In this case, the drive pinion 3 is only supported via its side collars 20 which engage in corresponding recesses in the side walls of the transmission housing 2.

3 shows, as a special feature, the mounting of the two reversing pinions 7 in the transmission housing 2 and on the rear side of the faceplate 4 connected thereto.

From the back of the faceplate 4 protrusions 21 protrude, which have arcuate bearing shells at their free ends. The reversing pinions 7 can each be supported here with their bearing journals. Associated with these projections 21 are recesses 22 in the side walls of the gear housing 2, which form semicircular bearing shells, which lie opposite the bearing recesses in the end faces of the projections 21. The projections 21 and the recesses 22 each work together as a rotary bearing for the pins of the reversing pinion 7.

An advantageous embodiment for the plug-in edge gear 1 is achieved in that the locking hooks 10 connecting the gear housing 2 to the faceplate 4 have an arrangement distributed over the length of the gear housing 2 (FIG. 3) and in each case in pairs on the sides of the housing facing away from one another are formed (Fig. 4). A pair of such locking hooks 10 is also provided between the bearing points of both reversing pinions 7 so that the lifting forces occurring there can be safely absorbed between the gear housing 2 of the faceplate 4.

In particular, from Fig. 1 of the drawing it can be seen that the two drive rods 5 and 9 of the plug-in edge gear 1 only have to have crankings which are directed transversely to the drive rod plane. The drive rods 5 and 9 can therefore be easily manufactured as stamped and bent parts.

4, the connection of the gear housing 2 with the faceplate 4 is shown. It is clear that the locking hooks 10 integrally formed on the gear housing 2 penetrate the locking recesses 11 of the faceplate 4. Each latching hook 10 is provided with latching edges 23 projecting outwards, which engage a latching engagement 28 which lies on the outside of the faceplate 4 in its latching recesses 11. When the gear housing 2 is pressed onto the faceplate 4 for the purpose of assembly, the latching hooks 10 are first displaced elastically inward by an inclined surface 24 leading their latching edges 23 into a recess 25 which is located in the side surfaces of a support web 29 for the drive rod 5. When the latching hooks 10 penetrate further into the latching recesses 11, the latching hooks 10, with their inner edges assigned to their free end, meet inclined surfaces 30, which adjoin the recess 25 in the support web 29 towards the outside of the faceplate 4. As a result, an outward spreading movement is then forced onto each latching hook 10, so that its outwardly directed latching edge 23 positively engages behind the latching engagement 28 of the latching recess 11 in the faceplate 4. The contour of the recess 25 with the inclined surface 30 is selected so that only elastic deformations of the latching hook 10 and the faceplate 4 are possible for producing the latching connection, but that a loosening of this latching connection is prevented without damaging the faceplate 4 or the gear housing 2.

Fig. 5 shows a cross section through the spacer 12 with the bore 17a. It can be seen that the spacer 12 extends through the drive rod 9 in a slot 26 provided for this purpose. Lateral locking lugs 31 are attached to the spacer 12, the largest outside dimension 32 of which is larger than the inside dimension 33 of the elongated hole 26 of the drive rod 9.

The locking lugs 31 are provided on their lower side with a bevel 34, which make it easier to clip in the drive rod 9. At their upper end, the latching lugs 31 have an almost horizontal section 35, the distance to the lower edge 36 of the connecting rod is selected so that the connecting rod 9 has sufficient space for its movement.

The bore diameter 27 is selected such that the fastening screw 37 compensates for any plastic deformation that may be present, in that its outer contour 38 bears close to the inner diameter 39 of the bore 17a. This makes it impossible for the drive rod 9 to slide when the fastening screw 37 is installed.

Claims (11)

1. A positioning bar fitting for a window or a door or the like, more particularly insert edge drives, comprising a face plate, a positioning bar mounted for displacement therebehind and a casing which is fixedly secured to the positioning bar and in which a pinion is mounted as rotating drive member, the pinion teeth cooperating with apertures in the positioning bar,
   characterised in that
   the transmission casing (2) is a unitary plastics structure, more particularly a plastics injection moulding,
   in that the face plate (4) is also made as a unitary plastic product, more particualrly by injection moulding, with rearwardly projecting spacers (12, 16) and at least one locking tab (14) associated with one end of the face plate (4), said tab being for an adjacent face plate end,
   and in that the locking tab (14) is hingedly connected by a film hinge portion of material (15) to the face plate (4).
2. A fitting according to claim 1,
   characterised in that
   the face plate (4) can be connected to the casing (2) by catch hooks (10) which are disposed, for example, on the casing (2) and which are engageable in companion catch recesses (11), for example, on the face plate (4),
   and in that the catch hooks (10) and catch recesses (11) have a shape (23, 24 and 25, 28, 30 respectively) which prevents unlatching of the connection without damage.
3. A fitting according to claim 1 or 2,
   characterised in that
   the casing (2) has passages (18) which extend parallel to the bearing spindle of the pinion (3) and which are adapted to receive fixing screws for the bearing rose of a pinion-operating lever, the screws having a polygonal, more particularly hexagonal, cross-section.
4. A fitting according to any one of claims 1 to 3,
   characterised in that
   when rotation of the pinion (3) is limited to 90°, the casing (2) has a back curved closure wall (19) in a semi-circular bearing segment for the pinion (3).
5. A fitting according to any one of claims 1 to 4 having means for reversing the thrust direction wherein two thrust members each having toothing for engagement are guided in the casing and are maintained in engagement with at least one pinion from opposite sides,
   characterised in that
   the face plate (4) has rearward projections (19) which serve as bearing shells for the bearing pins of the pinions (7) and in that the casing side walls (2) are formed with recesses (22) which extend fixedly, also as bearing shells, around the bearing journals of the pinions (7) from the opposite side.
6. A fitting according to claim 5,
   characterised in that
   one positioning bar (5) of the means for reversing thrust direction is cranked in a plane which extends parallel to the axis of the plane of rotation of the reversing pinions (7).
7. A fitting according to claim 2,
   characterised in that
   the catch hooks (10) are disposed in pairs one beside another on parallel side walls of the casing (2).
8. A fitting according to claim 2 or 7,
   characterised in that
   at least one pair of the catch hooks (10) are disposed near, more particularly between, the reversing pinions (7).
9. A fitting according to any one of claims 1 to 8,
   characterised in that
   the material of the casing (2) is made of a plastic containing a lubricant.
10. A fitting according to claim 1 or 2,
    characterised in that
    the spacers (12) of the space bar (4) have laterally projecting catch noses (31) for retaining the positioning bar (5 and 9 respectively) below the face plate (4).
11. A fitting according to claim 10,
    characterised in that
    the catch edges of the catch projections (31) extend outwards.

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