EP4001555B1 - Actuating handle with variable length driver - Google Patents

Description

The invention relates to an actuating handle according to the preamble of claim 1.

Operating handles for windows or doors usually have a handle that can be rotated around a predetermined axis and drives an operating device in the window or door via a driver. The handle is rotatable and axially fixed on a stop body that can be screwed to the window frame or door leaf. Depending on the installation situation, it may be necessary to select a driver from a range of drivers of different lengths in order to achieve a coupling with the operating device.

For example, EP 2 107 187 B1 Variable-length drivers are known that are spring-mounted and guided by two bushings that are coupled to one another, with one of the bushings being connected to the handle in a rotationally fixed manner. The solution proposed there is quite complex due to the number of components and is therefore difficult to manufacture.

The object of the invention is therefore to propose an actuating handle with a length-variable driver, which is simple and inexpensive to manufacture and yet easy to assemble and handle.

Main features of the invention are specified in the characterizing part of claim 1. Embodiments are the subject of claims 2 to 10.

An actuating handle for a window or a door is proposed, comprising a handle which is mounted with a handle neck so as to be rotatable about a rotation axis of a stop body and which has an elongated driver for entering into an operative connection with an actuating element of the window or door, which can be coupled to the handle in a rotationally fixed manner, wherein the handle neck can be connected to a bushing for securing the handle to the stop body. According to the invention, it is provided that the actuating handle has a recess; that the driver can be introduced into the recess in a longitudinally displaceable manner; that a compression spring is arranged in the recess and exerts a pressure force directed from the recess on the driver; and that the driver has at least one first stop element which corresponds to at least one second stop element in or on the recess, so that a movement of the driver directed out of the recess is limited by the stop elements, wherein the recess is arranged at least partially in the handle neck and the at least one second stop element is arranged on the bushing and projects into the recess.

The structure of the operating handle is therefore similar to that of conventional operating handles. A handle that is gripped by a user to open or close a door or window is designed to rotate around a rotation axis. To transfer a torque exerted by the user to an operating element of the window or door, a driver is provided that can be coupled to the handle in a rotationally fixed manner. The driver is preferably an elongated element that is usually designed as a square. This later projects into the operating element of the window or door and can also be coupled to it in a rotationally fixed manner.

The stop body is a component or a group of components that supports the handle and is connected directly to the window frame or door leaf. The position of the driver is determined by this. To attach the stop body, it may be advisable to provide two or more holes in the stop body, which can be covered with a cover and enable the stop body to be screwed tight. The holes preferably each have a hole axis that runs parallel to the axis of rotation of the handle.

The special feature of the design of the actuating handle according to the invention is that the driver is arranged so that it can be moved longitudinally in a recess in which a compression spring is also positioned. The compression spring, which is supported in a base of the recess or a shoulder arranged therein, is designed to exert an outward pressure force on the driver. If this pressure force is not counteracted by an at least identical counterforce, the driver is consequently forced out of the recess until the compression spring assumes a rest position. This creates a variable-length driver that can protrude from the recess or the stop body to different distances. The driver therefore does not necessarily have to be selected and used to suit a particular application, but the actuating handle allows for variability in length. The actuating handle can therefore be installed more quickly and allows for a smaller variety of parts. The driver automatically adapts to the installation situation.

The first and second stop elements are provided to limit an outward movement of the driver. It is conceivable that the driver has a projection or similar on a circumferential surface, for example, which corresponds to a complementary projection in or on the recess. The stop elements are arranged in such a way that the driver can only be pushed out of the recess up to a certain position, where the two stop elements come into contact, so that further outward movement is blocked. However, if a force directed into the recess is exerted on the driver that exceeds the pressure force of the compression spring, the driver can be pushed back into the recess. Its outward effective length is thus shortened.

The spring constant of the compression spring and its length in the relaxed state as well as the design of the recess can be coordinated so that the desired length variability is achieved with a minimum length and a maximum length. In addition, the spring constant should not be too large so that the installation of the stop body is not made more difficult when the driver is slightly depressed. It is conceivable that a length variability in an example range of 5-20 mm can be ensured in this way.

In an advantageous embodiment, it is provided that the stop body has a recess through which the handle neck extends, wherein the bushing for enclosing the recess is connected to the end of the handle neck protruding from the recess. The stop body is consequently enclosed by the handle and the bushing. For this purpose, the bushing is connected to the handle neck when the latter is inserted through the recess of the stop body. For this purpose, the bushing can be inserted axially into, on or onto the handle neck and with It is preferably provided that the bushing rotates with the handle neck and is therefore connected to it in a rotationally fixed manner. The recess of the stop body can be designed as a through hole.

According to the invention, the recess is arranged at least partially in the handle neck and at least one second stop element is arranged on the bushing which projects into the recess. The driver is then inserted into the handle neck and forms a rotationally fixed, movable connection with it. For this purpose, it is sensible to equip the driver and the recess with cross-sections that are complementary to one another, whereby these should not be exclusively circular in order to ensure torque transmission. The torque is therefore introduced directly through the handle neck into the driver and not through the bushing. The latter therefore serves to axially secure the handle to the stop body and to limit the axial movement of the driver by the at least one second stop element. Not only the manufacture of the handle can be simplified in this way, but also the assembly of the actuating handle. Furthermore, in an advantageous embodiment, it could be provided that the handle neck has an edge-side cutout extending in the axial direction for the passage of the at least one second stop element. The bushing could surround or enclose the handle neck on the circumference so that at least one second stop element protrudes radially from the outside through a peripheral surface of the handle neck into the recess. For this purpose, it is sensible to interrupt the handle neck locally. For mounting the bushing, it is also sensible for the cutout to extend to a front end of the handle neck so that when mounting the operating handle, the second stop element can be moved from the front end in the axial direction along the handle neck to the mounting position of the bushing.

In a further advantageous embodiment, it is provided that the at least one first stop element is designed as a surface notch on a peripheral surface of the driver. The surface notch, or also surface notch, could comprise not only a local depression but also a projection that is created when the surface of the driver is notched by protrusion of material. It should be noted here that in such an embodiment, the driver is preferably made of a metallic material that can be notched on a surface. The surface notch could be designed in such a way that a projection protruding from the surface is formed overall, which is shaped like a barb. This barb should be aligned in such a way that the driver can be easily inserted into the aforementioned depression and there, when inserted, which pushes at least one second stop element radially outwards. After insertion There should then be an edge on a side facing the second stop element, which comes into contact with the second stop element in question and thereby prevents the driver from being pulled out. The design of the stop elements could preferably be such that a force of at least, but preferably more than, 100 N is required to release the driver again.

It is particularly advantageous if the at least one second stop element is designed as at least one elastic locking lug that projects into the recess. The bushing with the elastic locking lug arranged thereon can be manufactured as a single piece as an injection-molded component. By implementing the second stop element as a locking lug, the driver can be easily mounted by inserting it into the aforementioned recess and locking it in place after passing through the locking lug. This also prevents the driver from accidentally coming loose from the mounted actuating handle.

Furthermore, it is particularly advantageous if the at least one second stop element is designed to be pushed radially outwards by the first stop element when the driver is inserted into the recess and to spring back radially inwards behind the first stop element. Due to the elastic and in particular spring-elastic properties, the locking lug can therefore protrude significantly into the recess before the driver is inserted. This allows continuous surface or line contact with the driver after the driver has been inserted. This ensures contact with the at least one first stop element when it is located on the respective locking lug.

It is advantageous if the at least one second stop element has at least two locking lugs that protrude into the recess at positions spaced apart from one another on the circumference. The driver could also have two first stop elements, each of which interacts with a second stop element. However, using two second or more stop elements could simplify the assembly of the driver, since it does not have to be rotated into a suitable position before being inserted, but rather the circumferential orientation of a first stop element corresponds to that of a second stop element in at least two and preferably in all rotation positions. It could be advantageous if the driver has a first stop element on two adjacent surfaces and/or on surfaces that are opposite one another.

Furthermore, it is advantageous if the socket has a neck portion and a first shoulder surrounding the neck portion, wherein the neck portion projects into the recess and the first shoulder is located on a side facing away from the handle at the edge of the recess on rests on the stop body. The neck section can be connected to the handle neck. Resting on the first step leads to axial fixation of the bushing. If the handle neck has a second step that limits the handle neck, the stop body can be enclosed between the first step and the second step.

In an advantageous embodiment, the handle neck is inserted into an opening in the socket. The socket thus surrounds the handle neck at least partially on the circumference. The recess can therefore be located completely in the handle neck. The socket and the handle neck can be connected to one another in this position.

Furthermore, the bushing could be screwed, glued, crimped, soldered, locked or welded to the handle neck. This creates a rotationally fixed connection between the bushing and the handle neck. To improve the connection, the bushing could have a non-circular hole so that a complementarily shaped handle neck achieves a rotationally fixed connection simply by inserting it and locking it if necessary.

Fig. 1 bis 6

unterschiedliche Darstellungen der Betätigungshandhabe.

Further features, details and advantages of the invention emerge from the wording of the claims and from the following description of embodiments with reference to the drawings. They show:

Fig. 1 to 6

different representations of the operating handle.

Fig.1 shows an operating handle 2 for a window or a door in a sectional view. The operating handle 2 has a handle 4, which is mounted with a handle neck 6 so as to be rotatable about a rotation axis 8 of a stop body 10. The handle 4 has a recess 12 which extends along the rotation axis 8 and has a base surface 14 as an inner boundary. A driver 16 designed as a square is arranged so as to be longitudinally displaceable in the recess 12. A compression spring 20 is arranged between an inner, front end 18 of the driver 16 and the base surface 14. In the compressed state, this pushes the driver 16 out of the recess 12 as soon as the pressure force exerted by the compression spring 20 is not balanced out by a counterforce acting on the driver 16 from the outside in the direction of the base surface 14. The driver 16 therefore projects a variable distance from the stop body 10 and its free length can be reduced by a force acting in the direction of the base surface 14. It is intended to establish an operative connection with an actuating mechanism (not shown here) in a window or door and to automatically adjust the necessary free length of the driver 16 during assembly.

The handle neck 6 is connected to a bushing 22. For this purpose, the bushing 22 has an opening 24 into which the handle neck 6 is inserted. A collar 28 is arranged on an outer, front end 26 of the handle neck 6, which extends radially outwards and rests on a support surface 30 of the bushing 22. Furthermore, the stop body 10 has a recess 32 through which the handle neck 6 and the bushing 22 extend.

The bushing 22 also has a neck section 34 and a first shoulder 36 surrounding the neck section 34, wherein the first shoulder 36 rests on the stop body 10 on a side facing away from the handle 4 at the edge of the recess 24. The stop body 10 or the recess 32 of the stop body 10 is consequently enclosed by the handle 4 and the bushing 22.

On a side facing away from the bushing 22, the handle 4 has a second shoulder 36. This is followed in the axial direction by an intermediate ring 40, which presses a largely flat cover 42 onto the stop body 10. The intermediate ring 40 is spring-elastic and is preferably made of a plastic or a metallic material and can spring in the axial direction, i.e. along the rotation axis 8. This allows the cover 42 to be moved axially and is always pressed onto the stop body 10 by the intermediate ring 40.

The intermediate ring 40 therefore allows the cover 42 to be easily lifted and rotated around the rotation axis 8 in order to expose screw holes 44 provided in the stop body 10. When assembling the actuating handle, a user can insert screws into the screw holes 44 and, after tightening the screws in a window frame or a door leaf, rotate the cover 42 back again to cover the stop body 10. The longitudinally displaceable mounting of the driver 16 allows different installation situations to be taken into account without having to replace the driver 16. As in Fig. 2 As shown, the driver 16 can be moved between an extended position (left) with a maximum length and a retracted position (right) with a minimum length. Both positions differ by a distance d, which, depending on the design of the actuating handle 2, could be, for example, between 5 and 20 mm and preferably approximately 10 mm.

In the Figures 3 and 4 shows how excessive pushing out of the driver 16 can be prevented. This also allows pre-assembly of the actuating handle for delivery. For this purpose, the driver 16 has a first stop element 46 in the form of a surface notch. This results in a projection extending in the radial direction. The bushing 22 has a spring-loaded locking lug 48 as a second stop element. This protrudes into the recess 12 and is designed to come into contact with the first stop element 46. The first stop element 46 and the second stop element 48 are designed such that the driver 16 can be inserted into the recess 12 from the outside, so that the first stop element 46 pushes the second stop element 48 radially outwards and after passing the second stop element 48, the latter springs back radially inwards and prevents the driver 16 from being removed.

In Fig.3 the first stop element 46 is shown in contact with the second stop element 48. This corresponds to the outermost position, as shown in the drawing plane on the left in Fig. 2 shown. In Fig.4 the driver 16 is in its retracted position, in which the compression spring 20 is maximally compressed and the driver 16 cannot extend further into the recess 12. The first stop element 46 is shown in a schematic detailed view in Fig.4 illustrated in more detail.

In the Figures 5 and 6 an exploded view of the actuating handle 2 is shown. While in Fig.5 a side view is shown, shows Fig.6 a somewhat perspective and partially sectioned view. Here, among other things, the recess 12 in the handle 4 can be seen. To insert the second stop element 48 into the recess 12, the handle neck 6 has a corresponding, edge-side cutout 50 that extends to the front end 26 of the handle neck 6. The second stop element 48 can be inserted in the axial direction into the handle neck 6 and then protrudes radially through a peripheral surface of the handle neck 6 into the recess 12.

The assembly of the actuating handle 2 could include preparing the handle 4, putting the intermediate ring 40 on the handle neck 6, threading the cover 42 onto the handle neck 6 by means of a hole 52 arranged in the cover 42, inserting the handle neck 6 into the recess 32 of the stop body 10, inserting the compression spring 20 into the recess 12 and inserting the driver 16 until it passes the second stop element 48 with the first stop element 46 so that it engages. The bushing 22 can be inserted into the recess 32 before or after inserting the driver 16 so that it is arranged between the handle neck 6 and the recess 32. To assemble the actuating handle 2, the cover 42 is lifted slightly from the stop body 10 and rotated. Screws are then screwed through the screw openings 44 into the window frame or door leaf. After turning back the cover 42, the actuating handle 2 is attached. Due to the variable length design of the driver 16, different installation situations can be taken into account without having to keep and insert different drivers 16. Its length then adjusts automatically.

List of reference symbols

2

Operating handle

4

Handle

6

Handle neck

8th

Rotation axis

10

Stop body

12

deepening

14

Floor area

16

Driver

18

inner front side

20

Compression spring

22

Rifle

24

opening

26

front end of the handle neck

28

collar

30

Support surface

32

Recess of the stop body

34

Neck section

36

first paragraph

38

second paragraph

40

Intermediate ring

42

cover

44

Screw hole

46

first stop element

48

second stop element / locking lug

50

Excerpt

52

Hole

Claims (10)

1. Actuating handle (2) for a window or a door, having a handgrip (4) which is mounted so as to be rotatable about an axis of rotation (8) of a stop body (10) by way of a grip neck (6) and has an elongate driver (16) for entering into an operative connection with an actuating element of the window or the door that is able to be coupled in a rotationally conjoint manner to the handgrip (4), wherein the grip neck (6) is able to be connected to a bush (22) for fixing the handgrip (4) to the stop body (10),

   wherein the actuating handle (2) has a depression (12) ;

   wherein the driver (16) is able to be introduced in a longitudinally displaceable manner into the depression (12) ;

   wherein a compression spring (20) is arranged in the depression (12) and exerts a pressure force, directed out of the depression (12), on the driver (16);

   wherein the driver (16) has at least one first stop element (46) which corresponds to at least one second stop element (48) in or at the depression (12) such that a movement of the driver (16) directed out of the depression (12) is limited by the stop elements (46, 48),

   characterized in that

   the depression (12) is arranged at least partially in the grip neck (6) and the at least one second stop element (48) is arranged on the bush (22) and projects into the depression (12).
2. Actuating handle (2) according to Claim 1, characterized in that the stop body (10) has an aperture (32) through which the grip neck (6) projects, wherein the bush (22), for enclosing the aperture (32), is connected to that end (26) of the grip neck (6) which projects out of the aperture (32).
3. Actuating handle (2) according to Claim 1, characterized in that, for through-passage of the at least one second stop element (48), the grip neck (6) has in each case one axially extending cutout (50) at an edge.
4. Actuating handle (2) according to one of the preceding claims, characterized in that the at least one first stop element (46) is in the form of a surface notch on a peripheral surface of the driver (16).
5. Actuating handle (2) according to one of the preceding claims, characterized in that the at least one second stop element (48) is in the form of at least one elastic latching nose, which projects into the depression (12) .
6. Actuating handle (2) according to Claim 5, characterized in that the at least one second stop element (48) is configured such that, when the driver (16) is inserted into the depression, it is pushed radially outwards by the first stop element (46) and, behind the first stop element (46), it springs back radially inwards.
7. Actuating handle (2) according to Claim 5 or 6, characterized in that the at least one second stop element (48) has at least two latching noses (48) which project into the depression (12) at positions peripherally spaced apart from one another.
8. Actuating handle (2) according to Claim 2, characterized in that the bush (22) has a neck portion (34) and a first shoulder (36) which surrounds the neck portion (34), wherein the neck portion (34) projects into the aperture (12) and the first shoulder (36) bears on the stop body (10) at the edge of the aperture (32) on a side facing away from the handgrip (4).
9. Actuating handle (2) according to one of the preceding claims, characterized in that the grip neck (6) is plugged into an opening (24) of the bush (22).
10. Actuating handle (2) according to one of the preceding claims, characterized in that the bush (22) is screwed, adhesively bonded, flanged, soldered, latched or welded to the grip neck (6).

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