EP3234283B1 - Door handle assembly with prebiased plates - Google Patents

Description

Field of the invention

The present invention relates to a set of door handles.

These include an assembly comprising two handles, two plates of cleanliness and the junction square through the plates and connecting the two handles.

Brief description of the prior art

Traditionally, the door handles are placed on rigid rectangular sheets called "cleanliness" or facing with a lock entry and a double crutch. A square that is a long stem of about ten centimeters square is inserted into the lock plates. To fix these door handles, check the verticality of the two plates with a level and then mark the fixing holes on both sides of the door. Finally, the last step is to fix the binding screws with a suitable screwdriver. There are also door handles on rosettes but the mounting procedure has the same disadvantages as those on plates, namely that it must screw the handle system on the door. These door handles are not easy to install, it is necessary to have many tools and it is necessary to degrade the support. Solutions have been devised to facilitate the installation of a door handle and make this pose accessible to all, including casual do-it-yourselfers. In patents BE427514A and DE2241983A1 there is a system of facing plates that do not require drilling with the anchoring pins in the door. The pins are pointed rods for fixing the door handle system in the holder, ie the door. The latter are welded directly to a thin facing plate, or manufactured in the mass of the relatively thin facing plate. This manufacturing process involves a certain fragility, a deterioration of the plate at the base of the pin up to the breaking of the pins. In addition, the facing plates proposed are straight causing a risk of deformation of the plate at its center when tightening the handles. The force exerted during the assembly of the handles has the effect of bending the facing plate. The solutions envisaged do not meet the requirement of strength and ease for the installation of door handles.

The prior art therefore does not solve satisfactorily the problem relating to the easy, quick and accessible to all of a door handle aesthetic and solid.

Summary of the invention

The present invention improves the current technique by providing a door handle device.

It is a set of door handles comprising two plates (1, 5) each traversed by an orifice, two handles (2, 3), a connecting means (8) of the two handles passing through said orifice and a clamping means (4). Each of said plates (1, 5) comprises at least two perforation means (7) of the door distributed on either side of said orifice, said orifice being the single orifice passing through each plate (1, 5), said means of connection (8) comprises complementary screwing means of a screwing means (4) freely connected to the opposite handle (2), the whole of the screwing means (4) and the connecting means (8) constituting a traction clamping means of the two handles (2, 3) and the two plates (1, 5) between them and ensuring the anchoring of the perforation means (7) in the door, said plates (1, 5) are deformable and are bent in their initial state in an elastic prestressing form such that said perforating means (7) are fixed in the inner curvature of said plates in their initial state.

Preferably, said perforation means (7), distributed on either side of the orifice, included in each of said plates, serving as a passage for the clamping means, are held on the inner surface of the plates by reinforcement means ( 6).

Advantageously, said connecting means is a square (8) secured to one of said handles (3) at one end and tapped at its other end.

According to one embodiment, said tapped square (8) receives a screw (4) passing through the non-integral handle (2) of said square, the assembly thus constituting said clamping means for anchoring.

According to another embodiment, said perforation means (7) are at least four in number.

According to a variant, said perforation means (7) consist of a hyperpyramidal tip terminated at their base by a cylindrical base of small thickness.

According to another variant, said square (8) is secured to one of said handles (3) by interlocking and gluing, said glued portion comprising grooves constituting additional gripping means for bonding.

According to a preferred embodiment, each of the plates (1, 5) comprises four perforation means (7) symmetrically distributed, said orifice acting as a center of symmetry.

According to an advantageous embodiment, said plates (1, 5) are in contact with the door over their entire periphery once the tightening of said clamping means carried out until the two plates come into contact with the door.

Brief description of the drawings

• La figure 1 représente en coupe, la vue de côté de l'invention installée sur une porte.
• La figure 2 représente une vue de face de l'invention.
• La figure 3 représente une vue en perspective éclatée de l'invention.

Other features and advantages of the invention will be better understood on reading the following description of an exemplary embodiment, with reference to the appended drawings in which:

• The figure 1 represents in section, the side view of the invention installed on a door.
• The figure 2 represents a front view of the invention.
• The figure 3 represents an exploded perspective view of the invention.

Detailed description of the preferred embodiments

With reference to these drawings, the device comprises two facing plates (1, 5) and two handles (2, 3). The two facing plates (1, 5) are bent and thus have a counter-arrow to prevent an unsightly deformation of their outer face under the action of a central clamping of the plates. This against-arrow, 2 mm for a facing plate 20 cm long, may be different depending on the size of the facing plate, the characteristics of the material used, the maximum or minimum clamping force desired. Indeed, the longer the facing plate and the elastic material used, for the same clamping force, the more against the arrow and therefore the bending will be important Inversely the more the facing plate will be short and made in a Rigid material, minus the against-arrow and therefore the bending of the facing plate must be pronounced for an identical clamping force. One of the door handles (3) comprises a square (8), which is glued into a blind hole of section identical to said square (8). For a better maintenance of the square (8) in the hole of this handle (3), this square (8) has transverse grooves in its glued part. This said square (8), a section of 8 mm by 8 mm, can fit into a square hole of the second handle (2). Said square (8) is threaded at its end to receive a screw (4) 5 mm in diameter which is inserted into the second handle (2). The assembly of these handles (1, 3) is done by the screw (4) which is tightened with an Allen key provided in the purchase kit of the door handles. The tightening of the handles (2, 3) between them, brings the facing plates (1, 5) closer together and the anchoring of pins (7) in the door. The pins (7), of pyramidal shape with four sides, milled in sharp point at their end and each comprising a head flat round, are welded to a double bottom (6) of the facing plate (1 or 5), or in another embodiment, made in the mass on a reinforcement (6) doubling said plate (1 or 5). The double bottoms (6) comprising the pins (7) are welded to the facing plates (1, 5). There are four pins (7) per plate (1, 5) facing, distributed on two plates (6) doubling positioned on either side of the hole of the passage of the square (8). When the screw (4) is tightened, the initially curved facing plates (1, 5), more exactly curved in a direction fleeing the faces of the door, will, due to the pressure, deform and straighten up. The clamping action thus causes a rectification of the plates (1, 5) which are then straight. At this precise moment, the pins (7) are anchored in the door. They cling to the door following the recovery of the plates (1, 5), allowing to be inserted in depth.

Each of the plates of cleanliness (1, 5) is manufactured with an elastic prestressing shape, whose initial deformation is calculated according to the material used and its characteristics, which under the tightening force of the screw (4) will take its flat form definitive by ensuring the clamping force of the two plates of cleanliness on the material of the door. Before plating on the door, the tightening will coincide with the inking capacity of the pins or pins (7) in the wood then the straightening of each plate of cleanliness.

It will be necessary, depending on the size of the desired plates, to size the screws required to obtain this effort and to define the molding or stamping of the cleanliness plate with the proper shape and the elasticity required to deform so that the operation not be tampered with.

The non-substantial modifications which would clearly follow, for those skilled in the art, from the use or manufacture of the device according to the invention whose patent is here required without altering the original arrangements, would not be than simple technical equivalents and are also within the scope of the present invention, as defined by the appended claims.

Industrial applications

The device according to the invention is particularly intended for sale in large and medium traditional and professional surfaces.

Claims (9)

1. Door-handle assembly comprising two plates (1, 5) with an orifice passing through each, two handles (2, 3), a means for connecting (8) the two handles passing through said orifice and a clamping means (4), an assembly in which each of said plates (1, 5) comprises at least two means for perforating (7) the door distributed on either side of said orifice, said orifice is the only orifice passing through each plate (1, 5), said means for connecting (8) comprises a screwing means complementary to a screwing means (4) connected freely to the opposite handle (2), the assembly comprising the screwing means (4) and the means for connecting (8) constituting a means for clamping together the two handles (2, 3) and the two plates (1, 5) by traction and providing the anchoring of the means for perforating (7) in the door, the assembly being characterised in that said plates (1, 5) are deformable, and are curved in their initial state in a resilient prestressed form so that said means for perforating (7) are fixed in the internal curvature of said plates in the initial state thereof.
2. Door-handle assembly according to claim 1, characterised in that said means for perforating (7), distributed on either side of the orifice, included in each of said plates, serving as a passage for the clamping means, are held on the internal surface of the plates by reinforcement means (6).
3. Door-handle assembly according to either of the preceding claims, characterised in that said connection means is a square bar (8) secured to one of said handles (3) at one end and threaded at its other end.
4. Door-handle assembly according to claim 3, characterised in that said threaded square bar (8) receives a screw (4) passing through the handle (2) not secured to said square bar, the assembly thus constituting said clamping means affording anchoring.
5. Door-handle assembly according to any of the preceding claims, characterised in that said means for perforating (7) are at least four in number.
6. Door-handle assembly according to any of the preceding claims, characterised in that said means for perforating (7) comprise a hyperpyramidal spike terminating at the base thereof in a thin cylindrical pedestal.
7. Door-handle assembly according to any of claims 3 to 6, characterised in that said square bar (8) is secured to one of said handles (3) by insertion and adhesion, said adhered part comprising grooves constituting said complementary engagement means for the adhesion.
8. Door-handle assembly according to any of the preceding claims, characterised in that each of the plates (1, 5) comprises four means for perforating (7) distributed symmetrically, said orifice serving as a centre of symmetry.
9. Door-handle assembly according to any of the preceding claims, characterised in that said plates (1, 5) are in contact with the door over their entire periphery once said clamping means has been tightened until the two plates come into contact with the door.

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