GR1009937B - Double latch for casement doors and windows - Google Patents

Abstract

The invention relates to a double latch practicable for casement profiles, consisting of a base (1) and a handle (10) furnished with two extending pins (6). The handle (10) has two rods (12) with corrugated recesses (13), forming distinct positions for the protruding pins (6). The immobilization of the handle at one of the distinct positions is achieved by rotation of the knob (23) which, thanks to its configuration, presses with its protruding edge (25) the knob retaining spring (22) preventing, through the holding plastic means (21), the further movement of the handle (10) inwards or outwards. The pins (6) can be inserted into face-mounted holes (8) or directly into holes located in the ground or the frame.

Description

DESCRIPTION

DOUBLE DRAWER FOR OPENING DOORS AND WINDOWS

THE FIELD OF TECHNOLOGY

The invention refers to the technical field of fixed constructions and more specifically to the field of keys, locks and door and window fittings. It specifically refers to locks with specific manufacturing characteristics or for special use and even more specifically refers to a double latch for opening doors and windows.

THE HISTORY OF THE INVENTION

The double latch for opening doors and windows disclosed in the present invention has not been disclosed in the prior art.

Until today, in opening aluminum frames, regardless of whether they are doors or windows, a number of different types of fuses are used in order to secure the opening profile. Most fuses are recessed inside the casing, while single, external latches are also known, which, when extended, fit onto a counter located on the side of the casing. The latches in question are placed around the perimeter of the frame and are used exclusively and only as an aid, alongside the securing of the profile, without being particularly valuable solutions, since they can be easily removed with a crowbar. Additionally, most latches presented to date are used exclusively for doors and not for opening windows or shutters.

Alternatives, for use in opening doors and windows, have also appeared in the past, such as for example DE 1007510, which refers to a door/window leaf opening lock and which consists of a pair of co-linearly moving pins that move within a single counter-cryst. It becomes apparent that this solution, although admirable, fails to provide the enhanced security afforded by two pins that move in parallel and lock in two positions on the counter. Furthermore, the system in question, like any other that has been proposed to date, cannot ensure that while it is secured, the opening leaf will be allowed to remain half-open, ensuring air flow.

It is thus an object of the present invention to advantageously address the aforementioned disadvantages and shortcomings of the prior art by proposing a double latch for doors and opening windows.

It is a further object of the present invention to provide a double latch for doors and casement windows which can be placed at any point on the inside of the door or casement window.

It is a further object of the present invention to provide a double latch which is placed on opening windows, without requiring the use of an anti-glaze.

A further object of the invention is to present a double latch for the additional security of doors and windows, opening type, which has an original design and is easy to install and easy to use.

A further characteristic advantage of the invention is the fact that the presented double latch can secure the opening leaf even half-open.

Another object of the invention is to present a double latch for opening windows and doors, which has unique resistance even to a crowbar, as it is made of aluminum profiles, while its plastic parts are made of polyamide, so that it remains unchanged over time and the weather conditions.

The object of the present invention is also the presentation of a double latch for opening doors and windows, whose pins, coming out, can be secured in any intermediate, discrete position.

An additional advantage of the invention is the presentation of an anti-crimp to which the double latch locks and which has holes at at least two different distances, in height, in order to accommodate different thicknesses of profiles. The elevation of the locking point achieved in this way further allows air passage during locking if desired.

A further feature of the invention is the possibility of locking shutters, by installing said double latch on the inner side of the hinges of the shutter, avoiding the obvious holes in the casing.

These and other objects, features and advantages of the invention will become apparent in the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will become apparent to those skilled in the art by reference to the accompanying drawings in which it is illustrated in an illustrative non-limiting manner.

Figure 1 shows the double latch for opening doors and windows, placed in different, indicative positions on a door.

Figure 2 shows in perspective view, the disassembled assembly, in its parts, the double latch of the present invention, together with the cooperating cyprid.

Figure 3 is a bottom perspective view of the double latch of the invention disassembled, with its components, the pin locking mechanism being particularly evident.

Figures 4 (a) - (b) show in section the double latch of the invention, both unlocked and in its terminal position when locked.

Figures 5 (a) - (b) respectively show indicative sections, with the double latch secured in the lower and upper holes of the cyprit, while Figure 5 (c) shows the optional, plastic additions, used for the raising the cypress, if required.

DETAILED DESCRIPTION OF PREFERRED APPLICATION

Referring now to the accompanying drawings, we will describe indicative applications of the double latch of the present invention, so that both its construction and operation method, as well as its general technical characteristics, become apparent.

The double bolt of the invention consists of a body (1), Fig. 2, of rectangular parallelogram shape, with at least one central screw hole (2) and at least one screw hole (3), on each side of the body (1). The screw holes (3) are covered by removable screw covers (4), Fig. 3. The body (1) of the double bolt is preferably made of aluminum profile.

The body (1) of the double latch has longitudinally, widthwise, two holes (5), into which pins (6) are inserted which are used to secure the latch. Advantageously, the construction of the pins (6) is made of steel, for increased strength and enhanced safety protection. The length of the pins (6) is equal to or greater than the sum of the length of the longitudinal holes (5) and the thickness of the holes (7) of the countersink (8). The pins (6) are cylindrical in shape, where on one end they have a smaller cross-section, creating a circumferential notch (9), Fig. 4 (b), with which they are secured to the handle (10), which has two corresponding protrusions ( 11) at the corresponding point internally, creating an aggregate. The handle (10) is made of plastic, preferably but not limited to polyamide, for increased resistance to weather conditions and repeated use. The handle (10) has two rods (12), with wavy recesses (13) inside them, while ending in two terminal recesses (14). On its upper side, the handle (10) has a notch (15), which the user uses to open and close the handle (10). Furthermore, the handle (10) has a configuration (16), of semicircular shape, which, when the double latch is closed, fully abuts the corresponding semicircular configuration carried by the cover (17). The cover (17) and the entire handle immobilization mechanism is housed between the two longitudinal holes (5) of the base (1). The wavy recesses (13) of the bars (12) of the handle (10) are designed to offer the user distinct locking positions of the pins (6) in relation to the abutment (8). Indicatively, it is stated that the locking positions may be two, but this is not restrictive for more positions, depending on the number of wavy recesses (13).

The fully closed position of the double latch of the invention is achieved both by terminating the handle (10) on the body (1) of the latch, and by terminating the terminal projections (14) of each rod (12) on the cover retaining plug (18). The cover retaining plug (18) is provided with two legs (19) with configurations that engage two corresponding projections (20) of the cover (17), securing the cover retaining plug (18) to the cover (17).

The double bolt of the invention has an internal locking mechanism for fixing the handle (10) and generally the steel pins (6) in specific discrete positions based on the wavy recesses (13). The stop mechanism consists of a plastic retainer (21), U-shaped, which is placed on the cover (17) and which has a button retainer spring (22). The button retainer spring (22) is a protrusion on the inner side of the plastic retainer (21), which has elasticity. On the inner side of the cover (17) and in the space created between the button retention spring (22) and the semicircular configuration of the cover, a button (23) is placed, the upper surface of which exits through a hole (24) in the cover (17) ), so that it can be rotated by the user. The button (23) has a semicircular shape with a prominent edge (25) on either side of which two notches (26), (27) are created. The base (28) of the button (23) has an additional notch (29), 4 (b), with which, during its rotation, it is stopped by finding resistance on the cover (17). The button (23) rotates only by 90<°>, where in its initial position, when the additional notch (29) abuts on the cover (17) is considered closed, while when rotated by 90<°> it is considered open. When rotating from the closed to the open position, the projecting edge (25) presses against the hub retaining spring (22), which thanks to its elasticity, is compressed downwards, allowing the projecting edge (25) to overcome its resistance. In its final open position the retaining spring is fixed within the notch (27). The base (28) of the button (23) in the closed position occupies all the available space between the legs of the plastic retainer (21), as a result of which it prevents the compression of said legs, and therefore the movement of the handle (10) and the wavy recesses (13) thereof.

When the button (23) is in the open position, its base (28) has been rotated by 90<°>, in relation to the previous situation, resulting in a gap between the legs of the plastic retainer (21) and the base (28) ). This gap allows the legs to be compressed during the movement of the handle (10) and the corrugated recesses (13). Depending on which distinct position the user decides to stop the handle (10), the legs of the plastic retainer return and occupy the space of the corresponding corrugated recess. In this specific position, the user can turn the knob (23) again, lock the handle (10) and by extension the pins (6). The stop positions are obviously dependent on the respective corrugated recesses (13) provided by the handle (10).

The counter (8) is made of aluminum profile and has at least two, but preferably and not limited to four screw holes (30) for screwing it either on the case, or on the opening profile of the door or window. The counterweight (8) has at least two holes (7), which are as far apart as the corresponding longitudinal holes (5) of the body (1) of the latch, so that the exiting pins (6) from the body (1) can enter seamlessly into the holes (7) of the anti-crust (8). In an advantageous application and in height, there may be other holes (31), in which the pins (6) will enter. Such an option will allow the opening door or opening window to remain half open offering the corresponding air passage. The counter (8) further has at the screwing points, similar type configurations with notches (32), in which slide screw covers (33) are applied, which cover the screw heads, offering an elegant visual effect.

In an alternative implementation of the invention, it may be necessary to place one or more additions (34), Fig. 5 (c), of different heights under the counter (8), so that the counter (8) can be raised. In this way, the locking position of the double latch can provide an air passage gap, Fig. 5 (b), even in conditions when the latch is closed. Each insert (34) has holes (35) which correspond to the corresponding holes of the counter plate (8) for the passage of the screws. The height of each addition (34) can indicatively vary from 2 to 9 mm, without this being limiting. It goes without saying that it is possible to combine more than one addition (34), Fig. 5 (a), one on top of the other, in order to achieve the desired height.

In another alternative implementation of the invention, the double latch can be applied without necessarily having a counter-reverse (8). In such a case, the holes into which the pins (6) enter are created at the corresponding point indicative of the wall, floor or aluminum profile where the countersink (8) would be, Fig. 1. In such a case, a cover flange can be placed holes, to achieve an elegant result.

At this point it should be noted that the description of the invention was carried out with reference to indicative application examples, to which it is not limited. Therefore, any change or modification regarding the shape, dimensions, morphology, materials used and construction and assembly components, as long as they do not constitute a new inventive step and do not contribute to the technical development of what is already known, are considered included in the aims and objectives of the present invention.

Claims (5)

1. Double latch for opening doors and windows, consisting of a body (1) and a handle (10) having two rods (12), with corrugated recesses (13) inside them, for controlling two pins (6), which move in longitudinal holes (5) on the body (1) and pin immobilization system (6), characterized in that the immobilization system has a retaining plastic (21), U-shaped, placed on a cover (17) and which has a spring button holder (22), with a protrusion on the inner side of the plastic holder (21), where a button (23) is placed with a base (28), the upper surface of which exits through a hole (24) in the cover (17), and the which has a semicircular shape with a prominent edge (25) on either side of which two notches (26), (27) are created, while the base (28) of the knob (23) rotates so that in the closed position it occupies all the available space between its legs plastic retainer (21) and has an additional notch (29), with the op once during its rotation it stops by finding resistance on the cover (17), encapsulating the ends of the plastic retainer (21) in the wavy recesses (13) of the rods (12) of the handle (10). 2. A double latch for opening doors and windows, according to claim 1, characterized in that the pins (6) enter an abutment (8) with holes (7) installed against the latch. 3. Double latch for opening doors and windows, according to claims 1 and 2, characterized in that the counter (8) has holes (31) above the holes (7) for the insertion of the pins (6). 4. Double latch for opening doors and windows, according to claims 1 to 3, characterized in that the counter (8) is placed on at least one addition (34). 5. Double latch for opening doors and windows, according to claim 1, characterized in that the pins (6) are made of steel.