EP0592854B1 - Releasable door handle connection - Google Patents

Abstract

The invention relates to a door handle (20, 29) which by simple means affords a releasable possibility adjustable to any door thicknesses, by providing a detent-spring connection which is embedded in a spring chamber (22) and which is held by means of a retaining element (10), without a disturbing transverse screw being present, and, furthermore, which allows the possibility of the damage-free production of radial grooves (18) on the door-handle guide extension for the snapping on of door escutcheons and door roses. <IMAGE>

Description

The invention relates to a detachable door handle connection which can be adjusted to any door thickness. The door handle set is usually connected to an angular door handle mandrel, which is designed square and penetrates the lock groove. Here, the angular door handle mandrel is serrated on at least one side surface, a groove running parallel to the handle hole being present in the toothed side surface of the door handle mandrel opposite, in which a retaining spring is arranged. This retaining spring is in direct engagement with the toothed side surfaces of the lever handle mandrel. This ensures that in cooperation with the teeth when the door handle mandrel enters the hole, the door handle creates a connection such that the handle is secured against slipping out. The positive entrainment of the door handle mandrel ensures that when one handle is actuated, the other inevitably moves as well.

A detachable handle connection that can be adjusted to any door thickness has become known from the German designation 20 01 636. Here, a leaf spring is U-shaped, whereby at the same time an eye is formed in the rear area of the spring, through which a retaining screw is inserted from the end face of the handle Door handle has and by the recess of the spring chamber to the door handle hole end a non-fluttering and wobbling free torque transmission for the door handle mandrel is extremely difficult to manufacture. This also applies to the type of connection, which can be found in the generic German utility model 78 36 758.

The German designation 11 17 442 shows a tongue-shaped leaf spring, which is attached to the side of a pusher pin designed as a square pin in the pusher neck by a grub screw. Here, the inward end of the leaf spring engages as a locking tongue in the Gearing of the square pin. However, this type of fastening has the disadvantage that the groove of the pusher neck is undercut and the leaf spring must be guided in it with a central piece that is widened relative to the end parts and must be pressed against the upper limit of the undercut of the groove by the retaining screw. In addition, the production of this undercut groove is extremely difficult and very costly in terms of casting technology. Furthermore, the recess for the undercut groove in the door handle guide approach has such a large space requirement that the spring chamber would be opened and thus damaged when radial grooves were inserted for rotatable connections on door plates and door rosettes.

Furthermore, a door handle mandrel connection with locking teeth has become known from the German designation 19 12 974, which enables a pair of handles to be plugged together without play on the built-in lock and door fitting. For this purpose, however, it is necessary that the door handle mandrel has latching teeth on two adjacent sides, into which the latching spring lying above it wedges. Here, too, space must be created for the retaining spring over the entire length of the pusher hole.

A complex lever handle connection can be found in German utility model 74 25 072. The lever handle mandrel can be inserted via an insert bush, which is secured by a cross-pin or screw connection. This connection is also not suitable for receiving a recess for an undercut groove in the lever handle guide extension.

The object of the invention is to provide a detachable door handle connection with simple means, in which the retaining spring is not lost when removed, but at the same time the adjustability to any door thickness with play-free assembly must be possible, with a functionally favorable attachment of the retaining spring without an undercut groove and without an annoying cross screw, as well as the damage-free production of radial grooves on the door handle guide attachment for clipping tightly rotatable bearing systems on door plates and rosettes is guaranteed.

The object of the invention is achieved by the features of claim 1, wherein a retaining spring with a U-shaped design is used, in which two repellent spring legs are present, which converge in a bottom which has a breakthrough for the door handle mandrel in its central region Spring legs are directed outwards under pretension and have bulges which are supported on the one hand against the door handle mandrel and on the other hand against the side surfaces of a groove made within the handle set. The retaining spring is held by a securing element, which is advantageously on the side facing away from the user, i.e. towards the floor. In the end area of the spring legs there is at least one angled spring end, which is in engagement with the toothing of the door handle mandrel.This type of installation does not require that space be provided for a spring chamber along the entire length of the door handle hole, so that there is space in the rear part of the door handle hole results in a more precise guidance of the door handle mandrel In addition, however, a stable element has been created by the design of the inherently closed bottom of the retaining spring, which enables the door handle mandrel to be inserted into the door handle without play.

In addition to the one-sided toothing of the door handle mandrel, it is also possible to use a double-sided toothed door handle mandrel, in which case the retaining spring on both spring legs must also have a latching edge so that a secure latching with the door handle mandrel is ensured in the inserted state. In addition to the one-sided screwing, a two-sided screwing of the retaining spring is of course also possible.

Because of this configuration, the lever handle can be provided with the retaining spring before delivery. This enables quick assembly at the construction site, so that only the door handle mandrel has to be inserted. If the door handle mandrel is inserted, there is a permanent connection between the door handle and the door handle mandrel. Only by loosening at least one retaining screw can the release of the door handle be made possible, which then looks so that when the door handle is removed, the retaining spring remains on the door handle mandrel.This has the advantage that when the door handles and the door handle mandrel are subsequently reassembled, they are not annoying Setting the door widths is necessary. In this case, it is only necessary to use the securing element, ie the retaining screw, which can be a cylinder screw with a pin or with an annular cutting edge. While the normal retaining screw is supported in the door handle neck and has no contact with the door handle mandrel, and thus only exerts a holding function for the retaining spring, when using a securing element, for example a threaded pin with a pin and a ring washer, a non-positive and positive connection between the Door handle and the door handle mandrel manufactured. The retaining spring can be made of spring steel with a surface protection, but it is also possible to use this retaining spring made of stainless spring steel in particularly aggressive atmospheres.

Since the door handle guide approach is not weakened to a great extent by the introduction of the spring chamber, as is shown in the prior art, it is possible to introduce a damage-free radial groove, for example where door plates or rosettes can be clipped on.

Figur 1:

Eine Draufsicht im Schnitt von zwei Türdrückern mit eingefügtem Türdrückerdorn

Figur 2:

Eine Haltefeder in der Vorderansicht

Figur 3:

Eine Haltefeder in der Draufsicht

Figur 4:

Eine Haltefeder in der Seitenansicht

Figur 5:

Ein Türdrückerlochteil mit befestigtem Türdrückerdorn in einer Schnittdarstellung

Figur 6:

Die Stirnansicht des Türdrückerhalses

Figur 7:

Den Ausschnitt einer Alternativbefestigung der Haltefeder mit einer Zylinderkopfschraube

Figur 8:

Den Ausschnitt einer Alternativbefestigung der Haltefeder mit einem Gewindestift, der einen Zapfen und eine Ringschneide aufweist.

Figur 9:

Ein Türdrückerlochteil mit eingefügtem Türdrückerdorn, doppelseitig gehalten durch gleichmäßig geformte Federschenkel

In der Figur 1 ist eine Zusammenfügung der Türdrücker (20) und (29) über den Türdrückerdorn (6) schematisch dargestellt. Auf die Darstellung der zwischen den Türdrückern (20) und (29) befindlichen Tür ist verzichtet worden. Der Türdrückerdorn (6) ist quadratisch in seinem Querschnitt ausgeführt. Er taucht mit seinen Enden jeweils in die Türdrückerlöcher (21) ein. Dabei wird der Türdrückerdorn (6) mit seinen Endbescheiden jeweils formschlüssig in den Türdrückerlochenden (26) geführt. Hierdurch ist quasi eine spielfreie Verbindung hergestellt worden. Der Türdrückerdorn weist an mindestens einer seiner Längsseiten eine Verzahnung (19) auf. Mit dieser Verzahnung (19) wirkt die jeweils in den Türdrücker (20) und (29) eingeführte Haltefeder (24) zusammen. Diese Haltefeder (24) liegt dann jeweils mit ihren Federschenkeln (1) und (2) in einer Federkammer (22), die sich innerhalb des Drückerhalses (12) und (30) befindet. Die Haltefeder (24) wird bereits bei der werksseitigen Montage in die Federkammer (22) eingeschoben und mittels eines Sicherungselementes, in diesem Fall einer Halteschraube (10) gegen Herausfallen gesichert. Es ist dabei anzumerken, daß die in der Figur 1 dargestellten Teilschnitte der Türdrücker um 90° verdreht gezeichnet wurden. Somit liegt die Befestigung nach unten hin und ist für den Benutzer nicht sichtbar. Darüber hinaus hat diese Montageart den Vorteil, daß sowohl für linke und rechte Türen keine separaten Drückerhälften gefertigt werden müssen.Further features, details and advantages of the invention result from the exemplary embodiments shown schematically in the drawings. Show it:

Figure 1:

A top view in section of two door handles with inserted door handle mandrel

Figure 2:

A retaining spring in the front view

Figure 3:

A spring clip in top view

Figure 4:

A spring clip in side view

Figure 5:

A door handle hole part with attached door handle mandrel in a sectional view

Figure 6:

The front view of the lever handle neck

Figure 7:

The cutout of an alternative fastening of the retaining spring with a cylinder head screw

Figure 8:

The section of an alternative fastening of the retaining spring with a grub screw, which has a pin and an annular cutting edge.

Figure 9:

A door handle hole part with an inserted door handle mandrel, held on both sides by uniformly shaped spring legs

In FIG. 1, an assembly of the door handles (20) and (29) via the door handle mandrel (6) is shown schematically. The door located between the lever handles (20) and (29) has not been shown. The door handle mandrel (6) has a square cross section. With its ends it dips into the door handle holes (21). The door handle mandrel (6) is guided with its end notches in a form-fitting manner in the door handle hole ends (26). As a result, a connection free of play has been established. The door handle mandrel has teeth (19) on at least one of its long sides. The retaining spring (24) inserted into the door handle (20) and (29) interacts with this toothing (19). This retaining spring (24) then lies with its spring legs (1) and (2) in a spring chamber (22) which is located within the pusher neck (12) and (30). The retaining spring (24) is already inserted into the spring chamber (22) during assembly at the factory and secured against falling out by means of a securing element, in this case a retaining screw (10). It should be noted that the partial sections of the lever handles shown in FIG. 1 were drawn rotated by 90 °. Thus the attachment lies down and is not visible to the user. In addition, this type of installation has the advantage that no separate handle halves have to be manufactured for left and right doors.

If the door handle mandrel (6) is now inserted into the pre-assembled handle half, for example (20) with the retaining spring (24), it supports already on insertion of the bulges (16) of the retaining spring (24). This enables the door handle mandrel (6) to be inserted without play. If the door handle mandrel end comes over the end of the spring legs (1) and (2), the toothing (19) located on the door handle mandrel (6) comes together with the latching edge (28), and pulling out the door handle mandrel is not due to the undercut toothing more is possible. Only when the securing element (10) is removed can the holding spring (24) be removed from the handle neck (12) with the door handle mandrel. The fine-toothed toothing (19) ensures that adaptation to different door thicknesses is possible.

Figures 2, 3 and 4 show the special design of the retaining spring (24) used according to the invention. The retaining spring (24) consists essentially of two spring legs (1) and (2) which are brought together in a U-shape over a base (3). Inside the base (3) there is an opening (5) through which the door handle mandrel (6) is guided. The spring legs (1) and (2) are under a certain pretension, ie they are spread outwards so that they give the holding spring (24) a certain hold when inserted into the lever handle hole (21). The spring legs (1) and (2) are designed so that bulges (16) are present, which in turn assume a management and spring function when the lever handle mandrel (6) is inserted through the opening (5) in the installed state. The door handle mandrel (6) is then supported against the bulges (16) without play. At the spring ends (17) and (25) with one-sided toothing of the door handle mandrel (6) locking edges (28) are attached. These locking edges (28) in the end region of the spring ends (17) and (25) have the task of preventing the door handle mandrel from coming out in the inserted state, as long as the retaining spring (24) is connected to the handle via the retaining barrier (10), because the Locking edge (28) engages in the toothing (19) of the lever handle mandrel (6). However, so that the retaining spring (24) cannot fall out of the lever handle hole (21), it is held by means of a securing element (10) which, with its attachment, passes through the retaining hole (8). The retaining hole (8) is located within a spring leg (1) or (2) and thus secures the retaining spring (24) against falling out.

However, in an embodiment of the object according to the invention it is also possible to introduce a holding hole (8) into each of the spring legs (1) and (2) of the holding spring (24).

The exemplary embodiment shown in FIG. 5 shows in a sectional drawing how the door handle mandrel (6) assumes a secure positioning within the handle neck (12). It is clear that only in the front area, i.e. It is necessary to hold the retaining spring (24) in the door handle guide attachment (23), because in its end area the door handle mandrel (6) is guided in a non-positive and positive manner in the door handle hole end (26) of the same geometry so that the retaining spring (24) is given a defined fit, it is held within the spring chamber (22). It is supported on the one hand against the groove wall (7) of the spring chamber (22) and on the other hand with its bulges (16) against the door handle mandrel (6). In this illustration it is particularly clear how the latching edge (28) of the retaining spring (24) is supported against the toothing (19). The retaining spring (24) in turn is supported with its base (3) against the end face (4) of the lever handle guide attachment (23 ). A radial groove (18) can be introduced within the door handle guide attachment (23) without damaging the groove wall (7), in which rosettes, for example, can be clipped in place. The invention also includes modifications that are not shown, for example in such a way that the door handle mandrel (6) is anchored in one of the two door handle halves (20) and (29), for example by a pinning or cohesively, while in the other door handle half (20) or ( 29) a detachable connection is provided with the aid of the holding spring (24) shown.

Figures 7 and 8 show again in detail the fastening of the retaining spring (24) within the lever handle neck (12). Here, for example, a cylinder head screw (13) can be used as a securing element of the holding spring (24). This cylinder head screw (13) has in its end region a pin (9) which passes through the holding hole (8) of the holding spring (24) and thus the holding spring ( 24) secures against falling out. The cylinder head screw (13) in turn is supported on a stop (32) within the lever handle neck (12). If, for example, a setscrew (14) is used instead of the cylinder head screw, it also has a pin (27) which passes through the holding hole (8) Retaining spring (24) passes through. In addition, an annular cutting edge (15) can also be connected to the pin (27). In this case, the pin (27) first holds the retaining spring (24) in the axial direction, and after the latching assembly of the door handle mandrel (6), this setscrew (14) with its ring cutting edge (15) can also be screwed into the teeth (19). This represents an additional safeguard for the door handle mandrel (6).

Another variant is shown in FIG. 9, where the retaining spring (24) is held on the one hand with countersunk head screws (11) on both sides of the spring legs (1) and (2). Here, too, the cylinder countersunk screw (11) is screwed through the holding bore (8) of the holding spring (24), as in the manner already described, and thus secures the holding spring (24) against unintentional slipping out.

Reference numerals

1

Feather legs

2nd

Feather legs

3rd

ground

4th

Face

5

opening

6

Lever handle

7

Groove wall

8th

Holding hole

9

Cones

10th

Retaining screw

11

Raised countersunk head

12th

Pusher neck

13

Cylinder head

14

Grub screw

15

Ring edge

16

Bulges

17th

Spring end

18th

Radial groove

19th

Gearing

20th

Lever handle half

21

Lever handle hole

22

Spring chamber

23

Lever handle approach

24th

Retaining spring

25th

Spring end

26

Lever handle end

27

Cones

28

Locking edge

29

Lever handle half

30th

Pusher neck

32

attack

Claims (11)

1. A releasable adjustable door handle connection with a polygonal door handle spindle (6) and two door handles (20, 29), the end zones of the door handle spindle (6) have a serration (19) on one or two side surfaces and one end of the spindle penetrating into a door handle neck (30) while the other end enters a companion handle neck (12), each having a polygonal hole (21) to receive the door handle spindle (6) for rotation therewith, and each handle hole (21) is provided on two side surfaces with two grooves which extend parallel to the door handle hole (21) and in the form of a spring chamber (22), and each serrated side surface of the door handle spindle (6) is placed opposite one of the grooves, and a retaining spring (24) with two arms (1, 2) is so disposed in each spring chamber (22) that each of the two spring arms (1, 2) extends into one of the grooves and the retaining spring (24) has a resilient detent projection in the form of a detent edge (28) facing the serrated side surface resp. each serrated side surface, an the detent projection (28) which in conjunction with the serration (19) is so constructed as to allow the door handle spindle (6) to enter the handle hole (21) in the respective door handle (20, 29) but, on withdrawal, lockingly engages with the serration (19), and the arms (1, 2) of the retaining spring (24) have outwardly directed corrugations in the form of convex parts (16), and the door handle spindle (6) bears without clearance against the convex parts (16), characterised in that the retaining spring (24) consists of a U-shaped detent spring with two arms (1, 2), the open ends (25, 17) of which point towards the door handle hole end (26) and the two arms (1, 2) are connected in a square base (3) which abuts the end face (4) of the door handle guide extension (23), and is provided with an opening (5) for the passage of the door handle spindle (6) and each detent edge (28) interlocking with the serration (19) is provided on one end of the spring.
2. A releasable adjustable door handle connection according to claim 1, characterised in that the retaining spring (25) with its spring arms (1, 2) is embedded in the spring chamber (22) which is not provided over the entire length of the door handle hole (21).
3. A releasable adjustable door handle connection according to claims 1 and 2, characterised in that the spring arms (1, 2) have an outwardly directed prestressing and bear against the longitudinal sides of the groove walls (7) in the spring chamber (22) of the door handle hole (21).
4. A releasable adjustable door handle connection according to claims 1 to 3, characterised in that at least one of the spring arms (1, 2) has a retaining hole (8) to receive a securing element.
5. A releasable adjustable door handle connection according to claim 4, characterised in that the securing element is a retaining screw (10) with a stud (9).
6. A releasable adjustable door handle connection according to claim 4, characterised in that the securing element is a screwthreaded pin (14) with a stud (27) and a ring edge (15).
7. A releasable adjustable door handle connection according to claims 1, 2 and 4, characterised in that the spring arm ends (17, 25) are provided with detent edges (28) and each spring arm (1, 2) is provided with a retaining hole (8).
8. A releasable adjustable door handle connection according to claim 1, characterised in that when the door handles (20) and/or (29) are separated the retaining spring (24) remains on the door handle spindle (6) by the construction of the base (3) of the closed ring which displaceably encloses the door handle spindle (6).
9. A releasable adjustable door handle connection according to one or more of the preceding claims, characterised in that the retaining sprig (24) consists of surface-protected spring steel.
10. A releasable adjustable door handle connection according to one or more of the preceding claims, characterised in that the retaining spring (24) consists of a stainless spring steel.
11. A releasable adjustable door handle connection according to one or more of the preceding claims, characterised in that a radial groove (18) is provided adjoining the handle guide extension (23) an the handle neck (12).

Images