Locking profile device for a wing restraint system, especially for doors or windows, by means of electromagnetic attraction

Description

[0001] The present invention relates to the field of hinged door and window locking systems, and more specifically to devices that hold door and window leaves open by magnetic or electromagnetic attraction. Its object is a profile-based locking device for a hinged door or window system, using electromagnetic attraction.

[0002] An electromagnetic attraction door or window sash immobilization system is a system comprising an electromagnetic lock that immobilizes the sash (moving part) of the door or window, whether closed or open, by holding it against the frame (or chassis) of the door or window by electromagnetic attraction.

[0003] The electromagnetic lock comprises, on the one hand, an electromagnet forming part of the lock, generally known as a suction cup, and being connected to an electrical power source to supply it with electric current and, on the other hand, a strike plate cooperating with the electromagnet by electromagnetic attraction in order to achieve the immobilization of the door leaf in relation to the frame.

[0004] Such a locking system also includes a profile equipped with at least one strike plate and another profile, also called a magnetic lock profile or magnetic lock strip, equipped with at least one electromagnetic lock. The magnetic lock profile is generally mounted on the frame, primarily for reasons of space and power supply to the electromagnet, while the profile equipped with the strike plate(s), which do not require electrical connections, is generally mounted on the sash. These profiles are either integrated into the frame of the sash or the fixed panel, or attached to the frame of the sash or the fixed panel.

[0005] The profile, equipped with at least one strike plate, has a generally tubular shape, typically with a U-shaped cross-section. It has two opposing faces, one of which has an opening, formed by the U-shaped opening, allowing the strike plate to be inserted into the profile, and the other forming the bottom of the profile. The profile opening also allows the suction cup to engage with the strike plate when the door or window is closed. Furthermore, between the opening and the bottom of the profile, it includes a retaining wing extending longitudinally along the axis (or along) of the profile, parallel to the joint plane, with one end facing the opening and the other facing the bottom.A fixing screw passes through the backing plate, engaging with the mounting flange. This screw, by being screwed into the flange, exerts clamping pressure on the backing plate (via the screw head pressing against the backing plate), thus holding the backing plate in position. The assembly also includes a damping element, such as a rubber bushing, interposed between the mounting flange and the backing plate. This element absorbs shocks and vibrations that may be exerted on the backing plate and compensates for any misalignment caused, for example, by deformation or thermal stresses. The backing plate is thus held in a semi-floating position within the profile.

[0006] Such a profile, equipped with at least one strike plate, is disclosed in document FR2884273. This document discloses an electromagnetic locking device for doors, windows, or similar applications, in which the profile has at least two locking ledges integrated into the profile, i.e., formed directly during the manufacturing process of the extruded metal profile, and extending parallel to the joint plane on either side of the longitudinal median plane of the profile. The locking ledges have a front edge facing the insertion opening. The strike plate is held in position on the locking ledges by means of clamping jaws consisting of a clamping plate bearing against the front edge of the locking ledges and a nut bearing against the rear edge of the locking ledges. The nut has a stirrup (T) shape and extends into the space separating the two hook edges.A fixing screw passes through the backing plate and holds it in contact with the plate via a silent block by screwing into the nut which thus forms, with the two hook edges, a hook wing of the backing plate in the profile.

[0007] However, these profiles equipped with at least one strike plate have several drawbacks. First, the cost is high due to the numerous different parts required to maintain the strike plate's position and semi-floating position (clamping plate, damping element, clamping plate fixing screws). Furthermore, due to vibrations caused by the repeated closing of the opening on which the profile is mounted, the strike plate fixing screw loosens, reducing the clamping effect on the locking edges and frequently leading to electromagnetic lock malfunctions. To address this loosening issue, additional fixing screws are generally used to secure the clamping plate to the locking edges, but this increases the cost, the on-site assembly time, or the factory pre-assembly time, and complicates the process.

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

[0009] For this purpose, the profile and immobilizing device, according to the present invention, for a system for immobilizing a leaf, 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 having internally a hooking wing extending between the opening and the bottom and having a front side turned towards the opening and a rear side turned towards the bottom, and on the other hand, a counter plate, at least one fixing screw passing through the counter plate engaging with the hooking wing and exerting clamping pressure on the counter plate to hold it in position and a shock-absorbing and clamping device interposed between the counter plate 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 mounting wing and a second end in contact with the backing plate.

[0010] The invention will be better understood from the following description, which relates to a preferred embodiment, given by way of non-limiting example, and explained with reference to the accompanying 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 cross-sectional view of the profile and immobilization device shown on 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 cross-sectional view of the profile and immobilization device shown on the figure 1 .

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

[0012] Such a sash locking system comprises the aforementioned profile and locking device and at least one electromagnet (not shown), also known as a suction cup (not shown in the accompanying figures). The suction cup can also be considered to include the electromagnet. The electromagnet is connected to an electrical power source and / or control and / or operating means. When the electromagnet is activated, i.e., when an electric current flows through it, a magnetic field is created that attracts the strike plate 2 when it is within the electromagnetic field in the closed position of the door or window. This interaction between the electromagnet and the strike plate 2 immobilizes the door or window sash in the closed position and thus keeps the door or window closed.The electromagnet and the strike plate 2 form an electromagnetic lock known to those skilled in the art and which is therefore not described in further detail in this text. The door leaf locking system may include other elements, for example a profile receiving the electromagnet.

[0013] The profile and immobilization device includes: a profile 1, generally tubular in shape, preferably with a 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 gripping 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 counter plate 2. The counter plate 2 is adapted and intended to cooperate with an electromagnet (or a suction cup) of the immobilization system, at least one fixing screw 3 passing through the counter plate 2 and engaging with the gripping wing 12, 13 to exert clamping pressure on the counter plate 2, thus holding it in position within the profile 1, and a shock-absorbing and clamping device interposed between the counter plate 2 and the front side 120 of the attachment wing 12, 13.

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

[0015] Such a shock-absorbing and clamping device, through its clamping function, ensures secure tightening, notably by limiting or preventing the loosening of the fixing screw 3 over time (within a given period). Its shock-absorbing function also allows it to absorb shocks and vibrations that may be exerted on the backing plate 2 and to compensate for any parallelism deviations due, for example, to deformation or thermal stresses. It allows the backing plate 2 to maintain a semi-floating position while ensuring effective and reliable clamping.

[0016] The cooperation between the counter plate 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 counter plate 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 counter plate 2 enabling it to press optimally 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 axis of profile 1 ( figures 3 , 4 ). The attachment wing 12, 13 can extend over all or part of the length of the profile 1.

[0019] In a particular embodiment not shown, the attachment flange can be made in one piece (without added parts), preferably by being fully integrated into the profile 1, i.e., by being produced directly during the manufacturing of the profile 1. It can then connect two lateral sides of the profile 1, for example, the two sides forming the two vertical arms of the U, extending parallel to the opening and / or the joining plane. It can be solid or perforated. In this case, the fixing screw 3 can be screwed directly into the material of the attachment flange or into tapped holes provided for this purpose in the attachment flange.

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

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

[0022] In accordance with the present invention, the shock-absorbing and clamping device is constituted, as can be seen in the figures 1 to 4, by a stack of 4 spring washers. Each 4 spring washer is preferably metallic. The shock-absorbing 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 backing plate 2.

[0023] Preferably, the first end of the shock-absorbing and clamping device is in direct contact with the front side of the attachment wing 12, 13, where applicable the front side 120 of the attachment edges 12.

[0024] A spring washer is defined as a washer that acts as a spring. Such a spring washer is commonly found commercially under the name elastic washer or "Belleville" washer.

[0025] Each 4-spring washer has a conical shape, more specifically a truncated cone shape, with a circular base. Preferably, the first end of the damping device is formed by the circular base of one or more of the 4-spring washers ( figures 1 to 4 The conical shape of the spring washer(s) 4 ensures a homogeneous distribution of the clamping force exerted on the backing plate by the fastening screw 3. Preferably, the second end of the damping device 4 is formed by the circular base of one of the washers in the stack of washers 4, that is, the last washer in the stack from the first end. This feature further strengthens the clamping of the backing plate 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 backing plate 2, under the impetus of the fixing screw 3, and the front side 120 of the mounting flange 12, 13, and, where applicable, the mounting edges 12. The spring washers 4 maintain optimal clamping pressure by acting like a compressed spring between two parts. This clamping compression prevents the fixing screw 3 from loosening, thus ensuring a secure assembly. Therefore, 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 screw's tightness is maintained optimally.

[0028] Such a stack of 4-spring washers, with their conical shape, makes it possible to obtain an elastic (or shock-absorbing) system with high stiffness and low deformability. It also absorbs thermal expansion and compensates for and / or takes up space, for example, due to expansion or wear. Furthermore, it ensures a homogeneous distribution of the bearing pressure and guarantees tightening. These effects can vary depending on the shape of the 4-spring washer assembly / combination. Two preferred assembly / combination shapes are described below. However, the present invention is not limited to any particular assembly shape, and in particular to the two assembly shapes described below.

[0029] The present invention can thus provide for the following two forms of association of the 4 spring washers: in a first illustrated form on the Figures 1 And 2 The 4-spring washers are stacked in series (or in opposition), that is, 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 increases the spring deformation height (formed by the stack height) 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. This is illustrated in the second form shown in the diagram. figures 3 And 4The 4 spring washers are stacked in parallel, that is, in the same direction relative to each other. In this case, the deformation of the stack (its flattening) is less than with the series stacking, which puts more stress on the fixing screw 3 of the backing plate 3 and, consequently, prevents or greatly limits the risk of loosening, while allowing the stack to perform the function of a shock absorber 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 4-spring washer or the stack of 4-spring washers is axially traversed 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 backplate 2 by going through or near the center of the latter.

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

[0033] Thus, such a profile and immobilization device, thanks to such a shock-absorbing and clamping device, provides the following advantages: reduced cost price, simplified assembly, time savings during assembly, reliable tightening by fixing screw 3 by preventing or limiting the risk of loosening due in particular to vibrations caused by the 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 accompanying drawings. Modifications remain possible, particularly with regard to the composition of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention, as defined by the attached claims.

Claims

1. Immobilizing profiled-element device for a system for immobilizing a leaf, more particularly a door or window leaf, by electromagnetic attraction, said device comprising, on the one hand, a profiled element (1) having two opposite faces, of which one has an opening (10) and the other forms the bottom (11) of the profiled element (1), the profiled element (1) having, on the inside, an attachment flange (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 backplate (2), at least one fixing screw (3) passing through the backplate (2) and engaging with the attachment flange (12, 13) by exerting a clamping pressure on the backplate (2) in order to hold it in position and a damping and clamping device interposed between the backplate (2) and the front side (120) of the attachment flange (12, 13), characterized in that the damping and clamping device consists of a stack of spring washers (4), which are preferably made of metal, the damping and clamping device extending axially between a first end in contact with the front side (120) of the attachment flange (12, 13) and a second end in contact with the backplate (2).

2. Immobilizing profiled-element device according to Claim 1, characterized in that the fixing screw (3) passes axially through the stack of spring washers (4).

3. Immobilizing profiled-element device according to either one of Claims 1 and 2, characterized in that each spring washer (4) has a conical shape having a circular base.

4. Immobilizing profiled-element 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 washers (4).

5. Immobilizing profiled-element device according to either one of Claims 3 and 4, characterized in that the spring washers (4) are stacked in series, i.e. in opposite directions to one another.

6. Immobilizing profiled-element device according to either one of Claims 3 and 4, characterized in that the spring washers (4) are stacked in parallel, i.e. in the same direction as one another.

7. Immobilizing profiled-element device according to any one of Claims 1 to 6, characterized in that the fixing screw (3) passes through the backplate (2) at the centre or near the centre thereof.

8. Immobilizing profiled-element device according to any one of Claims 1 to 7, characterized in that it further comprises means for preventing the fixing screw (3) from loosening, for example of the threadlock type.

9. Immobilizing profiled-element device according to any one of Claims 1 to 8, characterized in that the attachment flange (12, 13) comprises, on the one hand, at least two attachment edges (12) facing one another, preferably integrated into the profiled element (1), respectively forming, by way of one of their opposite sides, the front and rear sides of the attachment flange (12, 13) and, on the other hand, a clamping piece (13) inserted into the profiled element (1), of the nut type, bearing against the rear side (121) of the attachment edges in such a way that the fixing screw (3) cooperates with the clamping piece (13) by screwing into the clamping piece (13) in order to engage with the attachment flange (12, 13) by exerting the clamping pressure on the backplate (2).

10. Immobilizing profiled-element device according to any one of Claims 1 to 9, characterized in that the first end of the damping and clamping device is in direct contact with the front side (120) of the attachment flange (12, 13) or, if applicable, with the front side (120) of the attachment edges (12).