WINDOW

DESCRIPTION

The present invention relates to a manual control device for manually controlling a lock of a window.

Known devices of this type normally have a handle provided with a connecting bushing, a fixing block for fixing the handle to a profile of the window having a circular engaging hole for the connecting bushing, and a square pin for activating the lock, the square pin being engaged in the connecting bushing.

One of the most common assembly methods used today involves a final folding-over operation that fixes definitively and unequivocally the configuration of the product before installation on the window.

However, various types of window exist that differ in the length requested for the square pin for connection with the lock.

The problem of having products compatible with the various types of window on the market is currently solved by supplying pre-assembled products that differ only in the length of the square pin.

It goes without saying that this considerably complicates the management of inventories and the product transport and supply logistics for the installer.

The technical task addressed by the present invention is accordingly to make a manual control device for manually controlling a lock of a window that enables the decried technical drawbacks of the prior art to be eliminated.

Within this technical task, one object of the invention is to realise a manual control device for manually controlling a lock of a window which is adaptable in a versatile manner for installation on windows of various type.

Another object of the invention is to realise a manual control device for controlling a lock of a window that can be assembled extremely easily and rapidly.

Not the least important object of the invention is to realise a manual control device for manually controlling a lock of a window that simplifies the storage and supply logistics of components.

The technical task and these and other objects according to the present invention are achieved by a manual control device for manually controlling a lock of a window, comprising a handle having a grip and an axially hollow neck, a rotation bushing for rotating the handle that extends on the axial extension of said neck of the handle, a fixing block for fixing the handle to a profile of the window having a circular engagement hole for said bushing, and a square pin for activating the lock engaged in the axial cavity of the neck of the handle, characterised in that said bushing houses inside it at least one friction ring having a shape coupling with said square pin for the stabilisation and adjustment of the engagement position of said square pin in said axial cavity of the neck of the handle.

In a preferred embodiment of the invention said ring is firmly housed in said bushing.

In a preferred embodiment of the invention, said bushing has a round inner section mated to said ring and said neck of the handle has a square inner section mated to said square pin.

In a preferred embodiment of the invention, at a transition section between the round inner section of the bushing and the square inner section of the neck a shoulder on which the friction ring axially abuts is defined.

In a preferred embodiment of the invention, said ring is made of rubber.

In a preferred embodiment of the invention, said bushing and said hole of said fixing block have mutual snap fit engagement means.

In a preferred embodiment of the invention, said mutual snap fit engagement means comprise a toothing provided along the outer perimeter of a front end of said bushing and a counter toothing provided along the inner perimeter of said circular hole.

In a preferred embodiment of the invention the teeth of said toothing and/or the counter teeth of said counter toothing have a conical lead-in element.

In a preferred embodiment of the invention, said engagement hole and said bushing have interacting indexing means for indexing the angular position of said handle.

In a preferred embodiment of the invention, said indexing means comprise depressions on the outer perimeter of said bushing and elastically yielding protrusions on the perimeter of said engagement hole.

Advantageously, the length of the portion of the square pin that exits from the bushing can be adjusted, forcing the square pin to slide through the friction ring, which then firmly retains the square pin in the position reached.

A square pin of a sole length may thus be compatible with installing the product on a variety of windows.

The installer will adjust directly on the installation site the position of the square pin according to need.

The adjusting limit of the square pin is set by the interference of the end of the square pin with the bottom of the axial cavity of the neck of the handle.

In addition, the friction ring also has an active function for suppressing the vibrations that occur during normal use of the device.

Assembly does not require the availability of particular tools and on the contrary can be performed manually for forcing the square pin through the friction ring and forcing the bushing into the hole of the fixing block up to the snap fit of the mutual connecting means.

Further characteristics and advantages of the invention will more fully emerge from the description of a preferred but not exclusive embodiment of the manual control device for manually controlling a lock of a window according to the invention, illustrated by way of non limiting example in the accompanying drawings, wherein:

figures 1 and 2 show a front and rear exploded perspective view of the device;

figure 3 shows a lateral elevation view of the device;

figure 4 shows the device sectioned along line B-B of figure 3; and an enlarged detail.

figure 5 shows the device sectioned along line D-D of figure 3; and

figure 6 shows the device sectioned along line A- A of figure 5; and an enlarged detail.

With reference to the figures cited, a manual control device for manually controlling a lock of a window is shown, indicated in its entirety by reference number 1.

The control device 1 comprises a handle 2 having a grip 8 and a neck 7 provided with an axial cavity 9, a rotation bushing 5 that extends on the axial extension of the neck 7 of the handle 2, a fixing block 3 for fixing the handle 2 to a profile (not shown) of the window, and a square pin 4 for activating the lock (not shown).

The bushing 5 is obtained as a single piece with the handle 5 but in a different embodiment it can be fixed in another manner to the neck 7 of the handle 2.

The rotation bushing 5 engages a circular through hole 6 provided on the fixing block 3.

The square pin 4 extends through the circular hole 6 of the fixing block 3 and through the rotation bushing 5 and engages the axial cavity 9 of the neck 7 of the handle 2.

Advantageously, the rotation bushing 5 houses inside it at least one friction ring 10 having a shape coupling with the square pin 4 for the stabilisation and adjustment of the engagement position of the square pin 4 in the axial cavity 9 of the neck 7 of the handle 2.

The rotation bushing 5 has in particular a round inner section mated to the friction ring 10.

The neck 7 of the handle 2 has in turn a square inner section mated to the square pin 4. More particularly, as shown in figures, the friction ring 10 is firmly housed in the bushing 5.

In further more detail, at a transition section between the round inner section of the bushing 5 and the square inner section of the neck 7 a shoulder on which the ring 10 axially abuts is defined.

The friction ring 10 is made of rubber or of any other material that provides an appropriate friction coefficient with the material of the square pin 4.

For example, a friction ring 10 made of silicone rubber has shown itself to be appropriate for use in combination with a steel or iron square pin 4.

Advantageously, the bushing 5 and the hole 6 of the fixing block 3 have mutual snap fit engagement means 11, 12.

The snap fit engagement means 11, 12 have a toothing 11 provided along the outer perimeter of a front end of the bushing 5 and a counter toothing 12 provided along the inner perimeter of the circular hole 6.

The teeth of the toothing 11 and/or the counter teeth of the counter toothing 12 have a conical lead-in element 13 that favours the execution of the engagement.

In the illustrated solution, each of the four teeth of the toothing 11 has a profile bevelled at the front to define the conical lead-in element 13 that is suitable for coupling but not uncoupling the bushing 5 from the hole 6.

The counter toothing 12 is on the other hand formed by two diametrically opposite teeth having a “C” profile without bevels.

Advantageously, the hole 6 and the bushing 5 also have interacting indexing means 14, 15 for indexing the angular position of the handle 2.

The indexing means 14, 15 comprises depressions 14 on the outer perimeter of the bushing 5 and elastically yielding protrusions 15 on the perimeter of the hole 6. The depressions 14 extend along axial generatrices of the bushing 5 and end at the toothing 11. The protrusions 15 are formed on tabs 16 of material of the body of the fixing block 3 delimited on the long sides by material undercuts 17 of the body of the fixing block 3.

The fixing block 3 has holes 18 for fixing screws (not shown) for fixing to the profile of the window.

On the exposed face of the fixing block 3 there is a jig 19 for covering holes 18 that is clamped by an elastic element 20 against the fixing block 3.

The covering jig 19 has a circular passage hole 21 for the bushing 5 surrounded by a rib 22 acting as a positioning seat of the elastic element 20 that in the case in point is formed by a two- coil spring.

The elastic element 20 is retained in a seat by an outer shoulder 23 of the handle 2 that forms a connecting surface between the neck 7 of the handle 2 and the bushing 5.

The device 1 is assembled in the following manner:

The friction ring 10 is positioned in the bushing 5 and the square pin 4 is then inserted through the friction ring 10, forcing the friction ring 10 to penetrate for a portion into the axial cavity 9 of the neck 7 of the handle 2.

The elastic element 20 is fitted to the square pin 4 and then the hole 21 of the covering jig 19 and the hole 6 of the fixing block 3 are fitted to the square pin 4.

Maintaining a given angular orientation of the handle 2 with respect to the fixing block 3, the two elements are pressed towards one another.

Through the effect of the compression force applied, the toothing 11, owing to the conical lead- in element 13, is wedged between the counter toothing 12, which yields elastically until it is stepped over.

In the coupling position that is thus reached, the covering jig 19 is clamped between the fixing block 3 and the elastic element 20, which is in turn retained in the seat by the shoulder 23.

For the installation of the device 1, once the type of window or door is known, and thus the measurement of the distance of the lock from the device 1 is known, if necessary, the position of the square pin 4 is if necessary adjusted beforehand by modifying the amount of penetration of the handle 2 into the neck 7.

To fix the device 1 to the profile of the door or window, the covering jig 19 is at this point rotated, overcoming the reaction of the elastic element 20 until the holes 18 are uncovered, the screws are inserted and the covering jig 19 is returned to the initial position.

In use, reaching operating positions of the handle 2 (for example open, shut, lifted) is perceived by the user owing to the presence of the indexing means that match the snap fit engagement of protuberances 15 in the depressions 14 to these operating positions.

The manual control device for manually controlling a lock of a window as conceived herein is susceptible of numerous modifications and variants, all falling within the scope of the inventive concept; furthermore, all the details are replaceable by technically equivalent elements.

In practice, the materials used, as well as the dimensions, can be any according to the needs and the state of the art.