FR3065744A1 - SYSTEM FOR LATCHING AND UNLOCKING JOINERY - Google Patents

Abstract

The locking and unlocking system of a joinery comprises an opening adapted to cooperate with a frame, said opening being held in a closed position by displacement of a pin (10) fixed to a linkage housed in said opening, said system comprises: - an arm (20) extending between two longitudinal ends, - an electric motor mechanically connected to a first longitudinal end of the arm so as to drive the arm in translation, - a connecting element (50) attached to a second end longitudinal axis of the arm, adapted to cooperate with the pin (10), and being movable in rotation between a release position, in which the pin has no mechanical interaction with the connecting element, and a coupling position wherein the hole (54) is adapted to receive the pin, the link member including first attracting means (51) adapted to exert a holding force of the element coupling against the arm, in the coupling position, - second attraction means (60), adapted to exert a magnetic attraction force, the intensity of the magnetic attraction force being greater than that of the force retaining on the connecting element so that the second attraction means are adapted to drive the connecting element in the release position.

Description

© Publication number: 3,065,744 (to be used only for reproduction orders) © National registration number: 17 53706 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY

COURBEVOIE © Int Cl ⁸ : E 05 C 19/16 (2017.01), E 05 C 5/00

A1 PATENT APPLICATION

©) Date of filing: 27.04.17. © Applicant (s): SAPA BUILDING SYSTEMS FRANCE (30) Priority: Limited liability company - FR. @ Inventor (s): PIERSON CHRISTOPHE and MIEULET GAETAN. (43) Date of public availability of the request: 02.11.18 Bulletin 18/44. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): SAPA BUILDING SYSTEMS FRANCE related: Limited liability company. ©) Extension request (s): (© Agent (s): IPSIDE.

? 4) LOCKING AND UNLOCKING SYSTEM OF A JOINERY.

FR 3 065 744 - A1

The locking and unlocking system of a carpentry includes an opening adapted to cooperate with a frame, said opening being held in a closed position by displacement of a pin (10) fixed to a linkage housed in said opening, said system comprises:

- an arm (20) extending between two longitudinal ends,

- an electric motor mechanically connected to a first longitudinal end of the arm so as to be able to drive the arm in translation,

- a connecting element (50) fixed to a second longitudinal end of the arm, adapted to cooperate with the pin (10), and being movable in rotation between a release position, in which the pin has no mechanical interaction with the connecting element, and a coupling position, in which the hole (54) is adapted to receive the pin, the connecting element comprising first attraction means (51) adapted to exert a retaining force of the connecting element against the arm, in the coupling position,

- second attraction means (60), adapted to exert a magnetic attraction force, the intensity of the magnetic attraction force being greater than that of the retaining force on the connecting element so that the second means of attraction are adapted to entrain the element of

Field of the invention

The invention relates to joinery including an opening adapted to cooperate with a frame to open or close a building bay. It is in the field of locking and unlocking systems manually and / or electrically of an opening in the closed position of a building opening against a frame, and relates more particularly to a connecting element of such a system.

State of the art

Joinery comprising an electrical locking and unlocking system of an opening in the closed position of a building opening against a frame are known from the state of the art.

Such a locking system is adapted to mechanically connect the frame to an element of the opening. For example, this mechanism is fixed in a high cross member of a frame of the frame and includes a hook actuated by an electric motor to be able to retain and to be able to release a pin fixed on a side of the opening, for example on the high cross member of the opening.

Such a locking system is intended to perform a large number of successive locking and unlocking cycles. The parts of this system which interact mechanically with each other, that is to say in particular the hook and the pin in the example cited above, are therefore subjected to repeated mechanical forces and can be damaged under the effect of '' a phenomenon of mechanical fatigue.

In addition, these parts are subject to wear which could affect the reliability of the system.

Consequently, there appears to be a need to improve the reliability of state-of-the-art locking and unlocking systems.

Statement of the invention

The present invention aims to overcome the aforementioned drawbacks by reducing the mechanical interactions of the parts of a locking and unlocking system of an opening in the closed position of a building opening against a frame.

The present invention therefore provides a system for locking and unlocking an opening leaf in the closed position of a building opening against a frame having great reliability insofar as the parts constituting it are not very subject to mechanical fatigue phenomena and are hardly subject to wear.

Another objective of the present invention is to propose a system which is simple to produce and to implement and inexpensive.

To this end, the present invention relates to a system for locking and unlocking a carpentry comprising an opening adapted to cooperate with a frame, said opening being held in a closed position against the frame by displacement of a pin fixed to a housed linkage in said opening, said system comprising:

- an arm extending between two longitudinal ends,

an electric motor intended to be arranged in the frame, mechanically connected to a first longitudinal end of the arm so as to be able to drive the arm in translation,

- A connecting element fixed to a second longitudinal end of the arm, said connecting element comprising a through hole adapted to cooperate with the pin, and being movable in rotation between a release position, in which the pin has no mechanical interaction with the connecting element, and a coupling position, in which the hole is adapted to receive the pin, the connecting element comprising first attraction means adapted to exert a retaining force on the element link against the arm, in the coupling position,

- second attraction means intended to be fixed to the frame, adapted to exert a magnetic attraction force, opposite to the retaining force of the connecting element, the intensity of the magnetic attraction force being greater than the intensity of the retaining force on the connecting element so that the second attraction means are adapted to drive the connecting element into the release position.

The pawn referred to here is not a carpenter's bolt. Indeed, the pin is not intended to cooperate with a cavity specifically provided in the frame of the frame to lock the opening in the closed position against the frame.

In particular embodiments, the invention also meets the following characteristics, implemented separately or in each of their technically operative combinations.

In particular embodiments of the invention, the connection element is made of ferromagnetic material and the second attraction means comprise a permanent magnet adapted to exert a magnetic attraction force on the connection element.

In particular embodiments of the invention, the connecting element is made of ferromagnetic material and the second attraction means comprise an electromagnet controlled to exert a magnetic attraction force on the connecting element.

In particular embodiments of the invention, the arm is adapted to be driven in translation in order to reduce the intensity of frictional forces exerted by the pin on the connecting element so that said connecting element is able to be driven into the release position by the magnetic attraction force.

According to another object, the present invention also relates to a carpentry comprising a locking and unlocking system as described above.

Presentation of the figures

The invention will be better understood on reading the following description, given by way of nonlimiting example, and made with reference to the figures which represent:

- Figure 1: a bottom view of a locking and unlocking system of a carpentry comprising an opening adapted to cooperate with a frame, the opening (not shown in the figure) being in the open position,

- Figure 2: a front view of a locking and unlocking system according to Figure 1, said system comprising a connecting element occupying in a coupling position, the opening being in the closed position,

- Figure 3: a detailed perspective view of a connecting element according to the invention,

- Figure 4: a perspective view of a detail of a locking and unlocking system according to the invention, the connecting element occupying a release position, the opening being in the closed position,

- Figure 5a: a front view of a locking and unlocking system, the connecting element being in the release position, the opening being in the closed position,

- Figure 5b: a bottom view of a locking and unlocking system according to Figure 5a,

- Figure 6a: a front view of a locking and unlocking system, the connecting element being in the coupling position, the opening being in the closed position,

- Figure 6b: a bottom view of a locking and unlocking system according to Figure 6a,

- Figure 7: a front view of a locking and unlocking system according to Figure 1.

In these figures, reference numbers which are identical from one figure to the next denote identical or analogous elements. In addition, for reasons of clarity, the drawings are not to scale, unless otherwise stated.

Detailed description of the invention

The present invention relates to a system for locking and unlocking a carpentry, such as a window or a French window, comprising an opening adapted to cooperate with a frame, in a manner known to those skilled in the art. The opening may be movable in rotation relative to the frame along a vertical axis, so as to form an opening known under the designation "French-style opening", along a horizontal axis, so as to form an opening known under the designation " bellows opening ”, or along the horizontal and vertical axes alternately, so as to form an opening known by the designation“ swinging opening ”. This mobility allows the opening to alternately occupy an open position and a closed position, that is to say to open and / or close a building bay in which the carpentry is installed.

These concepts are within the reach of the skilled person and are therefore not detailed further here. Furthermore, the sash and the frame are not shown in the figures for reasons of clarity.

The opening and closing of the opening can equally be carried out electrically, by means of an electric motor, or manually, by actuation of a handle with which the opening is provided, in a manner known to those skilled in the art. , as detailed later in the text.

The locking and unlocking system according to the invention is intended to be placed in a cross member of the frame, for example, in a cross member called "high cross member", said cross member being opposite to a cross member called "low cross member" closer to the ground. as the top rail. The upper cross member and the lower cross member are joined to one another by their ends in a manner known to those skilled in the art.

The opening is held in the closed position, against the frame, by the displacement of a pin 10 arranged on the upper cross member, said cross member being opposite to a cross known as "lower cross" closer to the ground than the high cross. The upper and lower cross members of the opening are joined by their ends to two uprights, in a manner known to those skilled in the art. The pin 10 is fixed to a linkage housed in said opening, known per se to those skilled in the art. The linkage mechanically connects the pin 10 to the handle, so that the movement of the handle causes the displacement of the pin 10, and more particularly its translation along the upper cross member of the opening.

The system comprises an arm 20 extending between a first and a second longitudinal end, as illustrated in FIG. 1. The arm 20 is mechanically connected, by its first longitudinal end, to an electric motor 30 intended to be arranged in the frame, so as to be driven in translation along the upper cross member of the frame.

More particularly, in the embodiment shown in Figure 2, the motor 30 is coupled to a screw-nut system 31 extending along a longitudinal axis substantially parallel to the upper cross member, by means of a set of gears 32. The set of gears 32 comprises at least a first pinion fixed to a first end of the screw of the screw-nut system 31 and at least a second pinion fixed to an output shaft of the motor 30, so that the rotation of the output shaft causes the screw to rotate. The first end of the arm 20 is fixed to the nut of the screw-nut system 31 so as to transform a rotational movement of the screw into a translational movement of the arm 20.

The arm 20 is adapted to translate along a translation axis parallel to the longitudinal axis of the screw, in two directions: towards the front, that is to say away from the first pinion and towards the rear , that is to say, by approaching the first pinion.

For reasons of compactness, the arm 20 can be formed by a flat piece inscribed in a geometric plane P, that is to say by a piece whose cross section has a geometric shape of a rectangle whose dimension of two opposite sides is significantly smaller than the dimension of the other two sides. The arm 20 can be made of a metallic material such as ferritic stainless steel.

The arm 20 can comprise, at its second end, a recess 21 provided for receiving the pin 10. More specifically, the recess can be formed between two branches 210 arranged at the second end of the arm 20, as shown in FIG. 1 .

The motor 30, the set of gears 32 and the screw-nut system 31 can advantageously be arranged in a housing 40, for example of parallelepiped shape, adapted to be fixed in the upper cross member.

Preferably, the arm 20 forms a pantograph system with a lateral branch 22, movable in rotation in the frame, to which said arm 20 is articulated according to a pivot arranged, for example, substantially midway from the first and second longitudinal ends, as visible in figure 1.

As shown in FIG. 1, the arm 20 and the branch 22 may each be provided with a follower finger 200, 220 in connection with a cam profile formed in a groove formed in the housing 40. The housing 40 therefore comprises two grooves the shape of the cam profile of which is chosen such that the deployment or folding of the pantograph system, when the motor 30 is actuated, causes the opening to be opened or closed according to the kinematics of opening and closure selected.

Advantageously, the lateral branch 22 and the arm 20 can translate along an axis parallel to the longitudinal axis of the screw, when the opening is in the closed position, that is to say, when the pantograph system is folded , as shown in Figures 5a to 6b. During this translation, the longitudinal axes of the arm 20 and of the branch 22 are substantially parallel to each other. The technical effect of this translation is explained below. The cam profile of the recess in which the follower finger 220 of the lateral branch 22 and the cam profile of the recess in which the follower finger 200 of the arm 20 therefore have respectively a straight portion 201, 221 and a curved portion 202, 222 as shown in Figure 1.

The arm 20 comprises at its second end a connecting element 50 movable between a coupling position, in which the connecting element 50 is adapted to mechanically connect the pin 10 with the arm 20, and a position a release position, in which the connecting element 50 and the pin 10 cannot have any mechanical interaction between them, that is to say that the arm 20 cannot be mechanically linked to the pin 10.

More specifically, as shown in Figures 3 and 4, the connecting element 50 is adapted to pivot about an axis of rotation R substantially parallel to the geometric plane P so as to switch between the coupling and release positions . The connecting element 50 comprises two flanks 52, 53 extending on either side of the axis of rotation R. So that the connecting element 50 can switch between the coupling and release positions, the two sides have a bevelled profile, the thickness of the connecting element being less at the free ends of each side 52, 53 than at the level of the axis of rotation R, as shown in particular in FIGS. 3 and 4.

Preferably, the connecting element 50 comprises a hole 54 opening onto a first flank 52, adapted to cooperate with the pin 10 when said connecting element 50 occupies the coupling position. As shown in FIG. 3, the through hole 54 can be arranged substantially equidistant from the periphery of the first flank 52.

The connecting element 50 also includes first attracting means 51 adapted to exert a retaining force of the connecting element 50 against the arm 20, so as to maintain the connecting element 50 in the coupling position. In the embodiment shown in FIG. 3, the first attraction means 51 are arranged on the first flank 52 so that the retaining force is applied to said first flank 52.

These first attraction means 51 can be one or more magnets adapted to generate a magnetic retaining force on the arm 20.

Second attraction means 60 intended to be fixed to the frame, via the housing 40 in the embodiment shown in the figures, are adapted to exert a magnetic attraction force on the connecting element 50. The magnetic attraction force is opposite to the retaining force of the connecting element 50, and its intensity is higher than that of said retaining force when the connecting element is in line with the second attraction means 60 , so that the second attraction means 60 are adapted to drive the connecting element 50 in the release position.

The connecting element 50 can be made of ferromagnetic material and the second attraction means 60 can comprise a permanent magnet adapted to exert a magnetic attraction force on the connecting element 50. Alternatively, the second attraction means 60 may include an electromagnet controlled to exert a magnetic attraction force on the connecting element 50.

As shown in Figure 4, the pin 10 is, for example, of cylindrical shape and extends between a first end, by which it is fixed to the linkage, and a second end, by which it is free. The pin 10 may have a chamfer or a fillet at its second end to facilitate its engagement in the connecting element 50. The pin 10 may also include a groove 11 at its first end. The groove 11 has a width chosen so that the arm 20 can engage, by its recess, therein.

In this figure 4, the opening of the opening can be done manually: the connecting element is in the release position and the pin is removed from the recess by rotation of the handle of the opening.

Successive steps in the operation of the locking and unlocking system are shown in Figures 1.5a, 5b, 6a, 6b and 7.

Figures 5a and 5b show a carpentry in which the door is closed and locked. When the opening is in this position, the connecting element 50 occupies the release position of the pin 10 in order to make it possible to open the opening by manual action on the handle, as shown in FIG. 4. In Indeed, in this release position, the connecting element 50 prohibits any mechanical interaction of the arm 20 with the pin 10. In the case of manual opening, such a mechanical interaction would be likely to block the opening in the closed position due to the kinematic chain driving the arm 20 by the motor 30.

In view of the electric opening of the opening, the motor 30 is actuated so as to drive the arm 20 in rearward translation (to the right in FIGS. 5a and 5b), so that the connecting element 50 escapes the magnetic attraction force and is attracted to the coupling position by the retaining force, as shown in Figures 6a and 6b. The retaining force exerted on the connecting element 50 is then of a higher intensity than that of the magnetic attraction force exerted on said connecting element 50 due to the progressive separation of the connecting element 50 from the second attraction means 60. Once in the coupling position, the connecting element 50 is mechanically linked to the pin 10 and is therefore able to move it during the movement of the arm 20.

As shown in Figures 1 and 7, the electric motor 30 is then actuated so as to drive the arm 20 in forward translation (to the left in Figures 1 and 7). This translation of the arm 20 causes the pin 10 to move away from the frame, and therefore the opening of the opening. It should be noted that during the movement of the arm 20, the connecting element 50 comes, during its travel, with regard to the second attraction means 60; however, it is not driven into the release position since the mechanical interaction between the pin 10 and the connecting element 50 generates friction forces of intensity greater than the intensity of the magnetic attraction force . The frictional forces are especially greater than the effort required to move the pin 10 is important.

Figure 1 illustrates the system when the arm 20 has been moved to the second end of the screw, that is to say, the opening is opened to the maximum.

During the steps shown in FIGS. 1, 6a, 6b and 7, the pin 10 is coupled to the connecting element 50.

With a view to electrically closing the opening, the electric motor 30 is actuated so as to drive the arm 20 in translation backwards (to the right according to FIG. 7), so as to drive the pin 10 up a position in which the opening is closed against the frame thanks to the folding of the pantograph system, as represented by FIGS. 6a and 6b. In this position, the connecting element 50 is arranged with regard to the second attraction means 60, but it is not driven into the release position for the same reasons as explained above.

The motor 30 is then actuated so as to drive the arm 20 in forward translation to move the connecting element 50 in order to reduce the intensity of the frictional forces exerted by the pin 10 on said connecting element 50. displacement of the connecting element 50, of the order of a few tenths of a millimeter or a few millimeters, is carried out until said connecting element 50 is driven into the release position by the force of magnetic attraction, as illustrated by Figures 5a and 5b.

Another object of the present invention relates to a carpentry comprising a locking and unlocking system of an opening in the closed position of a building opening against a frame.

More generally, it should be noted that the embodiments and embodiments considered above have been described by way of non-limiting examples, and that other variants are therefore possible.

Claims (5)

1 - system for locking and unlocking a carpentry comprising an opening adapted to cooperate with a frame, said opening being held in a closed position against the frame by displacement of a pin (10) fixed to a linkage housed in said opening, said system comprising: - an arm (20) extending between two longitudinal ends, an electric motor (30) intended to be arranged in the frame, mechanically connected to a first longitudinal end of the arm (20) so as to be able to drive the arm (20) in translation, - a connecting element (50) fixed to a second longitudinal end of the arm (20), said connecting element (50) comprising a through hole (54) adapted to cooperate with the pin (10), and being movable in rotation between a release position, in which the pin (10) has no mechanical interaction with the connecting element (50), and a coupling position, in which the hole (54) is adapted to receive the pin (10), the connecting element (50) comprising first attraction means (51) adapted to exert a retaining force of the connecting element (50) against the arm (20), in the coupling position , - second attraction means (60) intended to be fixed to the frame, adapted to exert a magnetic attraction force, opposite to the retaining force of the connecting element (50), the intensity of the force d magnetic attraction being greater than the intensity of the retaining force on the connecting element (50) so that the second attraction means (60) are adapted to drive the connecting element (50) in the position of release. 2 - locking and unlocking system according to claim 1, in which the connecting element (50) is made of ferromagnetic material and in which the second attraction means (60) comprise a permanent magnet adapted to exert an attraction force magnetic on the connecting element (50). 3 - Locking and unlocking system according to claim 1, in which the connecting element (50) is made of ferromagnetic material and in which the second attraction means (60) comprise an electromagnet controlled to exert a magnetic attraction force on the element 5 link (50). 4 - Locking and unlocking system according to one of claims 1 to 3, wherein the arm (20) is adapted to be driven in translation in order to reduce the intensity of friction forces exerted by the pin (10) on 10 the connecting element (50) so that said connecting element (50) is able to be driven into the release position by the magnetic attraction force. 5 - Carpentry comprising a locking and unlocking system according to one of claims 1 to 4. 1/4 210