Locking profile device for a wing, especially a door or window, locking system by electromagnetic attraction

Abstract

The present invention relates to a profile and immobilization device for a system for immobilizing a leaf, more particularly a door or window, by electromagnetic attraction, the device comprising a profile (1) having internally a hooking wing (12, 13), a counter plate (2), at least one fixing screw (3) passing through the counter plate (2) engaging with the hooking wing (12, 13) by exerting a clamping pressure on the counter plate (2) to hold it in position, and a shock-absorbing and clamping device interposed between the counter plate (2) and the hooking wing (12, 13).It is characterized in that the damping and clamping device consists of a stack of spring washers (4), preferably metallic, the damping and clamping device extending axially between a first end in contact with the front side of the attachment wing (12, 13) and a second end in contact with the counter plate (2).

Description

[0001] [The present invention relates to the field of immobilization systems for leaves, in particular doors or windows, more particularly devices holding the leaves by magnetic or electromagnetic attraction. Its subject is an immobilization profile device for an immobilization system, more particularly for a door or window leaf, by electromagnetic attraction.

[0002] A door or window leaf immobilization system by electromagnetic attraction is a system comprising an electromagnetic lock making it possible to immobilize the leaf (moving part) of the door or window, in the closed or open state of the latter, by retaining it by electromagnetic attraction against the frame (or frame) of the door or window.

[0003] The electromagnetic lock comprises, on the one hand, an electromagnet forming a part of the lock, generally known as a suction cup, and being connected to a source of electrical energy to supply it with electric current and, on the other hand, a counterplate cooperating with the electromagnet by electromagnetic attraction in order to immobilize the leaf relative to the frame.

[0004] Such an immobilization system further comprises a profile equipped with at least one counterplate and a profile, also called a suction profile or suction strip, equipped with at least one electromagnetic suction cup. The suction profile is generally mounted on the frame, in particular for reasons of space requirement and power supply to the electromagnet, while the profile equipped with the counterplate(s), which does not require electrical connections, is generally mounted on the leaf. These profiles are integrated into the frame (or chassis) of the opening or the frame or added by being fixed to the frame (or chassis) of the opening or the frame.

[0005] The profile equipped with at least one counterplate has a generally tubular shape, generally with a generally U-shaped section. It has two opposite faces, one of which has an opening, formed by the opening of the U, allowing the counterplate to be inserted into the profile and the other forms the bottom of the profile. The opening of the profile also allows the suction cup to be inserted, when closing the door or window, into the profile to cooperate with the counterplate. It further comprises, between the opening and the bottom of the profile, a hooking wing extending longitudinally along the axis (or along) of the profile parallel to the junction plane and having a front side facing the opening and a rear side facing the bottom.A fixing screw passes through the counterplate, engaging with the attachment wing, i.e. being screwed into the latter, to exert a clamping pressure on the counterplate (by the head of the screw pressing against the counterplate) allowing the counterplate to be held in position. It further comprises a damping element, such as a silentbloc, interposed between the attachment wing and the counterplate, to absorb shocks and vibrations which may be exerted on the counterplate and to compensate for any possible parallelism defects due, for example, to deformation stresses or thermal stresses. The counterplate is thus held in position in a semi-floating manner in the profile.

[0006] Such a profile equipped with at least one counterplate is disclosed in particular in document FR2884273. It discloses an electromagnetic lock device, for a door, window or the like, in which the profile comprises at least two hooking edges integrated into the profile, i.e. made directly during the manufacture of the profile, designed in metallic material by extrusion, and extending parallel to the junction plane on either side of the longitudinal median plane of the profile. The hooking edges have a front side facing the insertion opening. The counterplate is held in position on the hooking edges using clamping jaws consisting of a clamping plate bearing on the front side of the hooking edges and a nut bearing on the rear side of the hooking edges. The nut has a stirrup (T) shape and extends into the space between the two attachment edges.A fixing screw passes through the counterplate and holds it in place on the plate by means of a silentbloc, screwing into the nut which thus forms, with the two attachment edges, a wing for attaching the counterplate to the profile.

[0007] However, these profiles equipped with at least one counterplate have several disadvantages. First of all, the cost price is high due to the presence of many different parts to ensure the counterplate is held in position and semi-floating position (clamping plate, damping element, clamping plate fixing screw). In addition, due to vibrations caused by repeated closing of the opening on which the profile is mounted, the counterplate fixing screw loosens, which reduces the clamping effect on the hooking edges and often leads to failure of the electromagnetic lock operation. To solve this loosening problem, additional fixing screws are usually provided to fix the clamping plate in the hooking edges, but this increases the cost price and the assembly time on site or pre-assembly in the factory and complicates these operations.

[0008] The present invention aims to overcome these drawbacks by proposing a profile and immobilization device for a door or window leaf immobilization system by electromagnetic attraction with low cost and offering reduced assembly and / or pre-assembly times, while limiting the risk of loosening of the fixing screw during use.

[0009] For this purpose, the profile and immobilization device, according to the present invention, for a leaf immobilization system, more particularly a door or window, by electromagnetic attraction, said device comprising, on the one hand, a profile having two opposite faces, one of which has an opening and the other forms the bottom of the profile, the profile internally comprising a hooking wing extending between the opening and the bottom and having a front side facing the opening and a rear side facing the bottom, and on the other hand, a counterplate, at least one fixing screw passing through the counterplate and engaging with the hooking wing, exerting a clamping pressure on the counterplate to hold it in position and a damping and clamping device interposed between the counterplate and the front side of the hooking wing,is characterized in that the damping and clamping device consists of a stack of spring washers, preferably metallic, the damping and clamping device extending axially between a first end in contact with the front side of the attachment wing and a second end in contact with the counterplate.,

[0010] The invention will be better understood from the following description, which relates to a preferred embodiment, given as a non-limiting example, and explained with reference to the appended schematic drawings, in which: [ Fig. 1 ] is a cross-sectional view of a profile and immobilization device according to the present invention, in an embodiment in which the spring washers are stacked in a series arrangement, [ Fig. 2 ] is a longitudinal / axial sectional view of the profile and immobilization device shown in the figure 1 , [ Fig. 3 ] is a cross-sectional view of a profile and immobilization device according to the present invention, in an embodiment in which the spring washers are stacked in a parallel arrangement, [ Fig. 4 ] is a longitudinal / axial sectional view of the profile and immobilization device shown in the figure 1 .

[0011] The attached figures show a profile and immobilization device, according to the present invention for a leaf immobilization system, more particularly a door or window, by electromagnetic attraction.

[0012] Such a leaf immobilization system comprises said profile and immobilization device and at least one electromagnet (not shown), also known as a suction cup (not shown in the attached figures). It can also be considered that the suction cup comprises the electromagnet. The electromagnet is connected to a source of electrical energy and / or to control and / or monitoring means. When the electromagnet is activated, i.e. when the electric current flows through it, a magnetic field is created and makes it possible to attract the counterplate 2 when the latter is in the electromagnetic field in the closed state of the door or window. This cooperation between the electromagnet and the counterplate 2 makes it possible to immobilize the opening of the door or window in the closed position and therefore to keep the door or window closed.The electromagnet and the counterplate 2 form an electromagnetic lock known to those skilled in the art and which is therefore not described in more detail in this text. The leaf immobilization system may comprise other elements, for example a profile receiving the electromagnet.

[0013] The profile and immobilization device includes: a profile 1, of generally tubular shape, preferably of generally U-shaped cross-section, having two opposite faces, one of which has an opening 10 and the other forms the bottom 11 of the profile 1 and internally comprising a hooking wing 12, 13 extending longitudinally along the axis of the profile 1 between the opening 10 and the bottom 11 and having a front side 120 facing the opening 10 and a rear side 121 facing the bottom 11, a counterplate 2. The counterplate 2 is suitable and intended to cooperate with an electromagnet (or a suction cup) of the immobilization system, at least one fixing screw 3 passing through the counterplate 2 and engaging with the hooking wing 12, 13 to exert a clamping pressure on the counterplate 2 allowing it to be held in position in the profile 1, and a damping and clamping device interposed between the counterplate 2 and the front side 120 of the attachment wing 12, 13.

[0014] The profile 1 equipped with the counterplate 2 is preferably intended to be mounted on the opening (or the movable part or the service leaf) of a door or window.

[0015] Such a damping and clamping device makes it possible, through its clamping function, to ensure the safety of the clamping, in particular by limiting or preventing the loosening of the fixing screw 3 over time (over a given period). It also makes it possible, through its damping function, to absorb shocks and vibrations that may be exerted on the counterplate 2 and to compensate for any parallelism defects due, for example, to deformation stresses or thermal stresses. It makes it possible to give the counterplate 2 a semi-floating position while ensuring effective and reliable clamping.

[0016] The cooperation between the counterplate 2 and the electromagnet is located in the profile 1 between the hooking wing 12, 13 and the opening 10 of the profile 1.

[0017] The counterplate 2 is configured in shape and dimensions and held in position on the attachment wing 12, 13 so as to allow free oscillation of the counterplate 2 allowing it to be optimally pressed against the electromagnet when the latter is activated.

[0018] It is understood that the attachment wing 12, 13 extends essentially in a transverse direction relative to the (longitudinal) axis of the profile ( figures 1 , 3 ) and in the direction of the profile axis1 ( figures 3 , 4 ). The attachment wing 12, 13 may extend over all or part of the length of the profile 1.

[0019] In a particular embodiment not illustrated, the attachment wing can be made in one piece (without added part(s)), preferably by being integrated entirely into the profile 1, that is to say by being made directly during the manufacture of the profile 1. It can then connect two lateral sides of the profile 1, for example the two sides forming the two vertical branches of the U, by extending parallel to the opening and / or to the junction plane. It can be solid or openwork. In this case the fixing screw 3 can be screwed directly into the material of the attachment wing or into tapped holes provided for this purpose in the attachment wing.

[0020] In a preferred embodiment of the attachment wing 12, 13, as illustrated in the figures 1 to 4 , this may include: at least two hooking edges 12 facing each other, preferably integrated in the profile 1, respectively forming, by one of their opposite sides, the front and rear sides 120, 121 of the hooking wing 12, 13, and a clamping part 13 added in the profile 1, of the nut type, bearing on the rear side 121 of the hooking wing so that the fixing screw 3 cooperates with the clamping part 13 by screwing into the clamping part 13 to engage with the hooking wing 12, 13 by exerting the clamping pressure on the counterplate 2. The clamping pressure is exerted by the head 30 of the screw 13 against a bearing surface 20 of the counterplate 2.

[0021] As can be seen in particular on the figures 1 And 3, the clamping part 13 may have, in a preferred shape, a T-shaped cross-section, the horizontal part of the T bearing against the rear side 121 of the hooking edges 12 and the vertical part of the T being inserted between the two edges, preferably without extending beyond the front side 120 of the hooking edges 12. The vertical part of the T comprises a thread 130 into which the fixing screw 3 is screwed, more particularly the threaded rod 31 of the latter. The thread 130 may preferably extend into the horizontal part of the T, preferably beyond the latter in order to pass through the entire clamping part 13 and benefit from a greater grip through a greater screwing length.

[0022] According to the present invention, the damping and clamping device is constituted, as can be seen in the figures 1 to 4, by a stack of spring washers 4. Each spring washer 4 is preferably metallic. The damping and clamping device extends axially between a first end in contact with the front side 120 of the attachment wing 12, 13 and a second end in contact with the counterplate 2.

[0023] Preferably, the first end of the damping and clamping device is directly in contact with the front side of the hooking wing 12, 13, where appropriate the front side 120 of the hooking edges 12.

[0024] A spring washer is a washer that acts as a spring. Such a spring washer is commonly found commercially under the name of an elastic washer or “Belleville” washer.

[0025] Each spring washer 4 has a conical shape, more particularly a truncated cone, comprising a circular base. Preferably, the first end of the damping device is formed by the circular base of the or one of the spring washer(s) 4 ( figures 1 to 4 ). The conicity of the or each spring washer 4 ensures a homogeneous distribution of the clamping force exerted on the counterplate under the impulse of the fixing screw 3. Preferably, the second end of the damping device 4 is formed by the circular base of one of the washers of the stack of washers 4, that is to say of the last washer of the stack starting from the first end. This characteristic makes it possible to further reinforce the clamping of the counterplate 2.

[0026] Preferably, the 4 spring washers are identical in shape and dimensions.

[0027] It is understood that the stack of spring washers 4 is clamped between the counterplate 2, under the impulse of the fixing screw 3, and the front side 120 of the hooking wing 12, 13, where appropriate of the hooking edges 12. The spring washers 4 maintain the clamping pressure optimally by acting as a compressed spring between two parts. This clamping compression prevents any loosening of the fixing screw 3, which ensures secure mounting. Thus, for example, during vibrations caused by the repeated closing of the opening on which the profile is mounted and / or in the event of thermal expansion, the tightening of the screw is maintained optimally.

[0028] Such a stack of 4 spring washers, with the conical shape of the 4 spring washers, thus makes it possible to obtain an elastic (or shock absorber) system of great stiffness and reduced deformability. It also makes it possible to absorb thermal expansions and to compensate and / or take up clearances, for example from expansion or wear. It also makes it possible to obtain a homogeneous distribution of the support pressure and to guarantee tightening. Furthermore, these effects may vary for one or the other depending on the form of the association / combination of the 4 spring washers. Two preferred forms of association / combination are described below. The present invention is however not limited to a particular form of association and in particular to the two forms of association described below.

[0029] The present invention can thus provide the following two forms of association of the spring washers 4: in a first form illustrated on the figures 1 And 2 , the 4 spring washers are stacked in series (or in opposition), that is to say in opposite directions to each other. In this case, the flattening load of the stack is the same as for a single 4 spring washer, which makes it possible to increase the deformation height of the spring (formed by the height of the stack), while maintaining the stiffness of a 4 spring washer. In this case, the stiffness of a 4 spring washer allows the stack to perform the clamping function. in the second form illustrated on the figures 3 And 4, the spring washers 4 are stacked in parallel, that is to say in the same direction relative to each other. In this case, the deformation of the stack (its flattening) is lower than with the series stacking, which further constrains the fixing screw 3 of the counterplate 3 and, consequently, prevents or greatly limits the risk of loosening, while allowing the stack to perform the shock absorber function but to a greater extent than in the case of the series stacking.

[0030] Preferably, as can be seen on the figures 1 to 4 , the spring washer 4 or the stack of spring washers 4 is axially crossed by the fixing screw 3.

[0031] Preferably, as can be seen on the figures 1 to 4 , the fixing screw 3 can pass through the counterplate 2 by passing through the center or near the center of the latter.

[0032] Preferably, in order to further strengthen the clamping function, i.e. against the risk of loosening over time, the profile and immobilization device may further comprise means against loosening of the fixing screw 3, for example of the thread lock type (not shown in the attached figures).

[0033] Thus, such a profile and immobilization device, thanks to such a damping and clamping device, provides the following advantages: reduced cost price, simplified assembly, time saved during assembly, reliability of tightening by the fixing screw 3 by preventing or limiting the risk of loosening due in particular to vibrations caused by repeated closing of the opening on which the profile is mounted.

[0034] Of course, the invention is not limited to the embodiment described and shown in the attached drawings. Modifications remain possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

1. Profile and immobilization device for a leaf immobilization system, more particularly a door or window, by electromagnetic attraction, said device comprising, on the one hand, a profile (1) having two opposite faces, one of which has an opening (10) and the other forms the bottom (11) of the profile (1), the profile (1) internally comprising a hooking wing (12, 13) extending between the opening (10) and the bottom (11) and having a front side (120) facing the opening (10) and a rear side (121) facing the bottom (11), and on the other hand, a counterplate (2), at least one fixing screw (3) passing through the counterplate (2) and engaging with the hooking wing (12, 13) by exerting a clamping pressure on the counterplate (2) to hold it in position and a damping and clamping device interposed between the counterplate (2) and the front side (120) of the attachment wing (12, 13), characterized in thatthe damping and clamping device is constituted by a stack of spring washers (4), preferably metallic, the damping and clamping device extending axially between a first end in contact with the front side (120) of the attachment wing (12, 13) and a second end in contact with the counterplate (2).

2. Profile and immobilization device, according to claim 1, characterized in that the stack of spring washers (4) is axially crossed by the fixing screw (3).

3. Profile and immobilization device, according to any one of claims 1 to 2, characterized in that each spring washer (4) has a conical shape with a circular base.

4. Profile and immobilization device, according to claim 3, characterized in that the first end of the damping and clamping device is formed by the circular base of one of the spring washer(s) (4).

5. Profile and immobilization device, according to any one of claims 3 to 4, characterized in that the spring washers (4) are stacked in series, i.e. in opposite directions to each other.

6. Profile and immobilization device, according to any one of claims 3 to 4, characterized in that the spring washers (4) are stacked in parallel, i.e. in the same direction relative to each other.

7. Profile and immobilization device, according to any one of claims 1 to 6, characterized in that the fixing screw (3) passes through the counterplate (2) through the center or near the center of the latter.

8. Profile and immobilization device, according to any one of claims 1 to 7, characterized in that it further comprises means to prevent the fixing screw (3) from loosening, for example of the thread lock type.

9. Profile and immobilization device, according to any one of claims 1 to 8, characterized in that the hooking wing (12, 13) comprises, on the one hand, at least two hooking edges (12) facing each other, preferably integrated in the profile (1), respectively forming, by one of their opposite sides, the front and rear sides of the hooking wing (12, 13) and, on the other hand, a clamping part (13) attached to the profile (1), of the nut type, bearing on the rear side (121) of the hooking edges so that the fixing screw (3) cooperates with the clamping part (13) by screwing into the clamping part (13) to engage with the hooking wing (12, 13) by exerting the clamping pressure on the counterplate (2).

10. Profile and immobilization device, according to any one of claims 1 to 9, characterized in thatthe first end of the damping and clamping device is in direct contact with the front side (120) of the hooking wing (12, 13), where appropriate with the front side (120) of the hooking edges (12). 1

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