EP0731241A1 - Escutcheon for rotatably supporting a door or window handle - Google Patents

Abstract

Two fixture holes (8,9) are positioned on each side of a tubular neck (19). A metal reinforcement plate (21) has a hole (22) esp. in the centre of it and through which goes the neck of the round anchor plate. At least one radially protruding catch (24) on the neck grips over the edge of the hole in the reinforcement plate, in a locking position. The catch is in the form of a wedge-shaped lug protruding beyond the outer casing of the neck.

Description

The invention relates to a rosette for the rotatable mounting of a handle for actuating at least one locking mechanism of a window or a door, with two fastening bores arranged on both sides of a tubular neck and a non-rotatable metal reinforcement plate, the central bore of which is penetrated by the neck of the rosette.

Rosettes of this type are usually made of plastic and they get their increased rigidity through the use of a reinforcement plate. The word "sheet metal" is to be understood in the broadest sense here because this component does not necessarily have to be completely flat, as is the case with sheet metal. On the other hand, however, it is usually made of sheet steel, which has a high level of strength from a material point of view. This can, for example, by expressions and the like. still be increased.

When a unit is made from a rosette, reinforcement plate and at least one actuating handle for the window or door fitting, which is rotatably mounted thereon, the rosette with the reinforcement plate is first combined to form a subunit. Then the further assembly takes place. Otherwise, this rosette or the structural unit is attached to the vertical bar of the window frame or the door, usually screwed on with the help of two screws.

Before further assembly of the subunit mentioned with the actuating handle, the problem often arises that the reinforcing plate detaches from the rosette and the subunit is delivered to the next production station in two parts. As is known, the transport takes place in transport boxes and the like.

In order to avoid this undesired detachment of the reinforcement plate from the rosette, the neck at the transition to Rosette body slightly enlarged in diameter. The particularly central bore of the reinforcement plate is pressed onto this increase in diameter, as a result of which both parts are then held together by means of friction.

The disadvantage is a difficult mounting of the reinforcement plate on the neck of the rosette. In the case of an unfavorable tolerance position, it may even be impossible to achieve a secure connection between the rosette neck and the reinforcement plate; rather, the reinforcement plate can spring back again after being released. Springing back of the reinforcement plate can also occur later in the assembled unit. If the latter still has a cover for covering the fastening screws of the rosette, this can lead to further difficulties if, for example, later it is necessary to dismantle the structural unit.

Pressing the reinforcement plate onto the thickened neck can also result in the rosette neck being somewhat resiliently narrowed in the event of an unfavorable tolerance position, and this then leads to the stiffness of the coaxially received actuating handle.

It is therefore the task of developing a rosette of the type mentioned in such a way that the disadvantages described do not occur and a safe, connection of rosette and reinforcing plate that is no longer self-releasing is nevertheless possible.

To solve this problem it is proposed in a rosette of the type mentioned that the reinforcing plate is locked in its use position against the neck of the rosette.

By locking the reinforcement plate to the neck of the rosette instead of the hitherto usual pressing, you can achieve a secure connection of the two components on the one hand, and on the other hand loosely hold the reinforcement plate on the neck of the rosette, so that radial narrowing of the neck is excluded and the subunit in the internal company Transport can no longer fall apart. Here, all known possibilities of locking a tubular extension with an essentially flat component come into question.

A particularly preferred variant results from the fact that at least one radially projecting latching element on the neck of the rosette in the latched position engages over the edge of the bore in the reinforcing plate.

Accordingly, at least one radially protruding locking element is attached to the neck of the rosette, in particular molded in one piece, which in the locked position of the Reinforcement plate whose hole edge overlaps from above. By appropriate shaping it can be achieved that the locking takes place resiliently and nevertheless a pushing back against the mounting direction cannot take place under the usual loads. As far as the shape is concerned, the most important thing is a ramp or the like. thought. Preferably, not only a radially protruding locking element is provided, but preferably at least two locking elements offset by 180 ° on the neck are used. In itself, a kinematically reversed solution is also conceivable, which consists in that the central bore of the reinforcing plate or the like has at least one radially inwardly projecting nose. has that slides during assembly along the resilient neck of the rosette and jumps into the latter when an undercut or circumferential groove is reached.

A further development of the invention provides that the locking element is designed as a wedge-shaped nose protruding over the outer jacket of the neck. Such a nose automatically forms the above-mentioned bevel, over which the reinforcement plate is pushed during assembly. In the final assembly position, it engages under this nose with comparatively little axial play. The dimensioning of the nose is to be chosen in relation to the bore of the reinforcement plate so that the reinforcement plate is always held securely even when the tolerance is unfavorable and when Tolerances come together unfavorably in another sense, the sheet can still be turned by the neck.

In order to improve the resilient behavior and thus also the assembly of the reinforcing plate, it is proposed in a further embodiment of the invention that the wall thickness of the neck is reduced in the region of the latching element on the inside of the wall of the neck. The reduction in wall thickness can be, for example, about 50% of the normal constant wall thickness of the neck. This improves the problem-free radial compression of the nose when the reinforcement plate is pushed onto the neck.

A particularly preferred embodiment of the invention provides that the reduction in wall thickness extends over a circumferential angle which corresponds approximately to three times the circumferential angle of the latching element. This improves the elastic behavior in this area when mounting the reinforcement plate. Seen in the longitudinal direction of the neck, the reduction in wall thickness can extend somewhat further than the nose over the area of the nose in the direction of the free edge of the neck.

Also seen in another direction is the reduction in wall thickness achievable by an inner recess in a very advantageous manner up to the inner edge of the mouth Neck drilling continued. This is very expedient, in particular with regard to the production or the molding when spraying.

To further improve the resilient behavior of the neck area on each latching element, it is provided that there is a radial opening at the transition from the neck to the rosette body on the neck in the area of each latching element, which extends circumferentially over the reduction in wall thickness and in the axial direction from the latching element to the side facing away from the spar Area of the rosette body.

The breakthrough mentioned there enables an even better radial deflection of the wall region, which is reduced in thickness, with the latching element when the subunit is installed.

Figur 1

eine Seitenansicht einer Baueinheit aus Rosette mit Verstärkungsblech und daran drehbar gelagertem Betätigungsgriff;

Figur 2

einen abgebrochenen Schnitt durch die Längsmittelebene dieser Baueinheit mit eingebautem Schloß;

Figur 3

in vergrößertem Maßstab eine Draufsicht auf die holmabgewandte Seite der Rosette;

Figur 4

einen Längsschnitt IV-IV gemäß Figur 3;

Figur 5

einen weiter vergrößerten Schnitt V-V gemäß Figur 3;

Figur 6

die holmzugewandte Seite der Rosette analog zu Figur 3.

Further advantageous configurations of this rosette with the reinforcement plate including its advantages and modes of operation result from the subclaims and the following description of an embodiment of the invention, which is shown in the drawing. Here represent:

Figure 1

a side view of a unit made of rosette with reinforcing plate and actuating handle rotatably mounted thereon;

Figure 2

a broken section through the longitudinal median plane of this unit with built-in lock;

Figure 3

in an enlarged scale a plan view of the side of the rosette facing away from the spar;

Figure 4

a longitudinal section IV-IV according to Figure 3;

Figure 5

a further enlarged section VV according to Figure 3;

Figure 6

the side of the rosette facing the spar analogous to FIG. 3.

Essential elements of the handle fitting of FIGS. 1 and 2 are the handle 1 with the non-rotatably connected square mandrel 2 as well as a rosette 3 and a cover 4. It is essential that the handle 1 is rotatably mounted about the geometric axis 5 and axially immovable on the rosette 3 is. A device shown in the drawing, but not explained in more detail below, can possibly have rotary locking positions define, for example, starting from the position shown in Figure 1, one or two successive further 45 ° or 90 ° rotary locking positions.

The square mandrel 2 acts on the window or door fitting in the sense of locking and unlocking, but possibly also for carrying out further adjustment movements of a fitting.

In the exemplary embodiment, the rosette 3 has two peg-like projections 6 and 7 which engage in corresponding drill holes on the closing-side, preferably vertical, spar of a window or door leaf. This results in a good fixation and alignment of the rosette 3 and thus the entire handle fitting against the wing. The pin-like lugs 6 and 7 each have a through hole 8 and 9 for a fastening screw, not shown. So that its head is not visible, the cover 4 is located above the rosette 3 as seen from the frame. Its size corresponds to that of the rosette, but it is lower. It consists of a very thin-walled material, preferably plastic. As a result, it is resiliently bendable in the direction of arrows 10 and 11. It consists at least of a flat cover wall 12 and a circumferential, cranked edge 13 of equal height all around, which is rectangular in the exemplary embodiment protruding nozzle 14 available, in particular be molded. According to FIG. 2, it engages in a corresponding receptacle of the handle 1.

If one grips the cover 4 on its narrow sides 15 and 16 and bends it up in the direction of the arrows 10 and 11, it can then be rotated by 90 °, for example. It is pivoted over a circumferential rib 17 of the rosette 3, which is rectangular in the exemplary embodiment (FIG. 4).

The circumferential recess 18 of the rosette 3 is designed in the manner of an approximately rectangular fillet, which is dimensioned such that the circumferential edge 13 of the cover 4 is accommodated therein and the cover 4, as shown in FIG. 2, is flush with the rosette 3.

According to Figure 4, the rosette 3 is equipped with a tubular neck 19, which is optionally covered by the nozzle 14 of the cover 4 with little play. In this case, the spigot 14 of the cover 4 then engages in the recess 20 at the front foot end of the handle 1 with sufficient play, as shown in FIG. A reinforcing plate 21 is held captively on the rosette 3. Both form the subunit mentioned at the outset, on which the actuating handle 1 and possibly further fitting elements are later mounted.

The reinforcing plate 21 has a central bore 22 (FIG. 4), the diameter of which corresponds to the outer diameter of the neck 19 of the rosette 3, taking into account a customary sliding fit. The locking of the reinforcing plate 21 on the neck 19 of the rosette 3 in the sense of the arrow 23 in FIG. 4 is achieved with the aid of two locking elements 24. They are attached to the outside of the neck 19, in particular integrally formed and lie opposite one another. They are preferably also at an acute angle to the transverse central axis 25 (FIG. 3). It can be seen from FIGS. 3 and 4 that, when the reinforcement plate 21 is fully installed, the locking elements 24 overlap the edge of the bore 22. In this way, the reinforcing plate 21 in the receptacle 26 of the rosette 3 formed by the ribs 17 is secured against lifting and, due to the shape, also held against rotation, since the outer surface of the reinforcing plate 21 runs approximately flush with the free edge of the rib 17. As can be seen particularly clearly from FIG. 5, the latching elements 24 in the exemplary embodiment have the shape of a nose which protrudes radially beyond the outer surface 27 of the tubular neck 19 and is approximately triangular in shape and constant in thickness, as a result of which, in the direction of the arrow 28, that is to say the push-on direction of the reinforcing plate 21 , a run-up slope is formed. When the reinforcing plate 21 is pushed on, the latching elements 24 spring back radially inward in the direction of the arrow 29.

To improve the spring-elastic evasive movement in the direction of arrow 29, the wall thickness of the neck 19 in the region of each latching element 24 is reduced by approximately 50% (FIG. 5). This reduction in wall thickness is achieved by providing a recess 31 on the inside 30 of the tubular neck 19. This recess 31 extends according to FIG. 6 over an angular range which is approximately three times as large as the angular range over which the latching element 24 extends. According to FIG. 5, the depression extends somewhat further upwards than the latching element 24. Furthermore, it is carried out downwards to the mouth plane 33 of the bore 32 of the neck 19.

At the transition from the neck 19 to the rosette body 34, a radial opening 35 is made on the neck 19 in the region of each latching element 24 (FIGS. 4 and 5). This further improves the elastic behavior of the latching elements 24. It extends in the circumferential direction of the reduction in wall thickness or depression 31 over an angle which corresponds to that of the depression 31. Viewed in the axial direction, each opening 35 extends approximately from the lower edge of the associated latching element 24 to the surface 36 of the rosette body 34 facing away from the spar. Furthermore, on the rosette body 34 there is a radially outward alignment with each latching element 24 and in the center to the opening 35 or the depression 31 Groove 37 available.

Two central hole enlargements 38 and 39, which extend in the radial direction and open in the form of open edges, open into the central bore 22 of the reinforcement plate 21. The slot width corresponds approximately to the diameter of the screw passage holes 40 and 41 of the reinforcement plate 21, which are in extension. Each of the two passage holes 40 and 41 is located, as shown in FIG. 2, on a funnel-shaped protuberance 42, which is shaped into a conical shape Recess 43 of the rosette body 34 engages.

The slot width of the central hole enlargements 38 and 39 corresponds at least to the diameter of a locking bolt 44 of a lock 45 inserted into the rotary handle 1.

Claims (13)

Rosette for the rotatable mounting of a handle (1) for actuating at least one locking mechanism of a window or a door, with two fastening bores (8, 9) arranged on both sides of a tubular neck (19) and a non-rotatable metal reinforcement plate, the central bore (22) of which, in particular, is centered. is penetrated by the neck (19) of the rosette (3), characterized in that the reinforcing plate (21) is locked against being lifted out in its position of use with the neck (19) of the rosette (3). Rosette according to claim 1, characterized in that at least one radially projecting latching element (24) on the neck (19) of the rosette (3) in the latched position engages over the edge of the bore (22) of the reinforcing plate (21). Rosette according to claim 2, characterized in that the latching element (24) is designed as a wedge-shaped nose which projects beyond the outer jacket (27) of the neck (19). Rosette according to claim 3, characterized in that the wall thickness of the neck (19) in the region of the or each latching element (24) on the inside wall (30) of the neck (19) is reduced. Rosette according to claim 4, characterized in that the reduction in wall thickness extends over an angle which corresponds approximately to three times the circumferential angle of the latching element (24). Rosette according to claim 4 or 5, characterized in that the reduction in wall thickness extends to the inner mouth edge (33) of the neck bore (32). Rosette according to one of claims 4 to 6, characterized in that at the transition from the neck (19) to the rosette body (34) on the neck (19) in the region of each latching element (24) there is a radial opening (35) which is in the circumferential direction extends over the reduction in wall thickness (recess 31) and in the axial direction from the latching element (24) to the surface (36) of the rosette body (34) facing away from the spar. Rosette according to claim 7, characterized in that on the rosette body (34) in alignment with each latching element (24) and centrally to the opening (35) or the reduction in wall thickness (recess 31) there is a radial there is an outwardly directed groove (37), the shape and size of which corresponds approximately to the cross-sectional shape and size of the largest end of the latching element (24) facing the rosette body (34). Rosette according to one of the preceding claims, characterized in that on the rosette body (34) there are two peg-like centering lugs (6, 1), each having a fastening bore (8, 9), extending from the neck (19) and projecting beyond the rosette body (34). 7). Rosette according to one of the preceding claims, characterized in that the rosette body (34) has an essentially rectangular shape and on its surface facing away from the spar (36) there is a somewhat recessed, rectangular recess that is set back in the same direction as the neck (19). extending rib (17) which can be gripped by a protruding edge (13) of a cover (4) which is flush with the rosette body (34) and covers the reinforcing plate (21). Rosette according to one of the preceding claims, characterized in that the reinforcing plate (21) is also a striking plate, from the central bore (22) of which in opposite directions extend two slot-like enlargements (38, 39) each against a screw passage hole (40, 41), the slot width corresponding approximately to the bolt thickness of the locking bolt (44) of a lock (45) inserted into the twist grip (1). Rosette according to claim 11, characterized in that each passage hole (40, 41) is arranged on a funnel-shaped protuberance (42) of the reinforcing plate (21) which engages in a formally adapted conical recess (43) in the rosette body (34) which engages each mounting hole (8, 9) of the rosette body (34) is present. Rosette according to one of claims 10 to 12, characterized in that the outer surface of the reinforcing plate (21) is approximately flush with the free edge of the rib (17).

Images