EP2148968A2

EP2148968A2 - Advanced handle square for any opening member

Info

Publication number: EP2148968A2
Application number: EP08805725A
Authority: EP
Inventors: Monsieur B. Wartel
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-10
Filing date: 2008-04-29
Publication date: 2010-02-03
Also published as: FR2916007A1; WO2008145933A3; WO2008145933A2; US20100201137A1

Abstract

The lack of adaptation of various models developed for satisfying an efficient safety system for door handle especially for children has been clearly assessed. In order to solve this problem, according to the invention and instead of using a low-safety and inconvenient lock, the handle is simply disassembled in order to replace the existing square with the advanced square (9) of the present invention. The square includes a threaded portion (11) and a tapped portion (10). One side of the door is secured, which is useful for cave-type parts, while the other side operates in a traditional manner. In order to actuate the bolt (2) the lever handle must first be raised in order to momentarily block the two portions of the square relative to each other. It is then possible to actuate the bolt by lowering the lever handle and unlocking the latter by applying, in a second time, a force having an amplitude higher than that required for the opening.

Description

Advanced handle square for any opening element

The present invention relates to an improved square handle for door, window or any other element said opening.

A door handle includes a housing enclosing a mechanism for controlling a lock or unlock for opening or closing the door. Today, a handle is also provided with a return element to maintain the stand in a horizontal position.

FIG. 1 represents an example of a door handle system according to the state of the art. The system comprises:

a button 1 intended to be grasped by a user's hand and to undergo a rotary force F,

- A mechanism for controlling a locking or unlocking for a closing or opening of the door, consisting of a latch bolt 2 disposed within the door and sliding along a headrest 3, a latch 4 positioned on the amount of the door, in front of the bolt 2, and a follower.

a square 5 passing through at least part of the opening and transferring said force to said housing,

assembly screws 6,

- an outside handle 7.

As a reminder, the nut of a lock, is the part usually made of brass, of square shape and of length approximately equal to a thickness of door, which actuates the latch latch. A crutch or a button placed on the follower allows, via the square, the operation of the lock when it is not locked.

In the state of the art, most of the handles also include a return spring so that the stand remains in a horizontal position when not actuated and a locking mechanism limiting the angle of rotation of the stand at about 90 °.

The mechanical characteristics of the square 5 are as follows: 24 daN / mm ² ≤ Re ≤ 1 OO daN / mm ² where Re is an elastic resistance corresponding to a hardness of penetration. The measuring principle is always the same: an indeformable indenter leaves a mark in the material to be tested. We measure the dimensions of the impression and we deduce the hardness. In a first approach, it is possible to connect the yield strength Re relatively simply with the surface of the impression: the more the penetrating object sinks, the more the pressure surface S increases, so the force F being constant, the lower the stress. When the stress is no longer sufficient to plastically deform the solid to be tested, the penetrating object stops, and we therefore have: Re = F / S.

In this area, parents know that doors do not stop young children. In order to prevent the doors from opening unintentionally, a reaction from the parents is to raise the handle crutches vertically, an improvised solution that, if it works, is nonetheless a disadvantage for the parents and for the safety of their children. .

In the state of the art, there is also known a spring mechanism, disposed inside a handle button which is shown in Figure 2. This mechanism allows to operate the button 8a after sliding a cap 8b associated with the button 8a. This sliding requires a force of about 30 newtons, which corresponds to the lifting of three kilograms. In any case, this mechanism necessarily implies a change of at least one button. The operation then requires installing said mechanism on the square 5 serving as an axis to the handle.

The lack of suitability of the various models scaffolded here to the satisfaction of an effective safety need of the door handle systems is proven.

In the invention, to solve these problems, instead of putting an insecure lock, simply disassemble the handle to replace the existing square with an improved square according to the invention. This square has a threaded portion and a threaded portion.

One side of the door is secure, which is useful for cellar or garage type rooms, while the other side works in a conventional way.

To actuate the latch latch, it is necessary to lift the crutch, at first, to temporarily block, by a phenomenon of friction, the two parts of the axis between them. Therefore, it is possible to operate the mechanism by lowering the crutch. Once the mechanism is actuated and the door is open, by prolonging the downward movement of the stand with a force of greater amplitude than that required for opening, the two parts of the square are unblocked, the friction is no longer sufficient.

Generally, the handles are equipped with return spring in the plates. With the invention, this recall is inefficient on the secure side. In a variant of the invention, the improved square comprises an elastic means for holding the stand in a predetermined rest position. This rest position generally corresponds to a horizontal position.

The invention therefore relates to an improved square handle for door, window or any other element said opening, the square

- cooperating with a mechanical housing comprising a follower for actuating a bolt which controls a lock or unlocking for closing or opening the opening,

cooperating with at least one stand intended to be actuated by a hand of a user,

traversing at least part of the opening and transferring a force to said housing,

- Being constituted of two distinct parts and able to cooperate with each other, one being threaded, the other being threaded, characterized in that

- The two parts are assembled by screwing with at least one washer between them, and locked together by friction of both on the washer,

this friction being achieved by turning the stand in a direction contrary to an opening action of the sash,

- This friction is released for unlocking by a rotary movement of the stand in a direction corresponding to an opening action, but so that the unlocking force is greater than that required for opening, and exerted beyond the opening.

In a variant, the subject of the invention is an improved square handle for a door, window or any other element called opening, the square

cooperating with at least one stand intended to be actuated by a hand of a user, traversing at least part of the opening and transferring a force to said housing,

- Being constituted of three distinct parts and able to cooperate with each other, two being threaded, the other being doubly threaded, characterized in that

the three parts are assembled by screwing with two washers between them, and locked together by friction of all three on the washers,

In a variant, the square according to the invention is also characterized in that the locking of the two parts to control the unlocking of the opening requires a force and psychomotricity higher than those of a young child.

In a variant, the square according to the invention is also characterized in that one face of the washer is abutted against the follower.

In a variant, the square according to the invention is also characterized in that the connecting washer is elastic and belleville washer type.

In a variant, the square according to the invention is also characterized in that the part comprising the thread, having a length greater than the part comprising the thread, cooperates with the follower.

In a variant, the square according to the invention is also characterized in that the threading is obtained by machining the material.

In a variant, the square according to the invention is also characterized in that the threading is obtained by screwing and by thermal, mechanical or chemical fixing of a grub screw within the shortest part of the square.

In a variant, the square according to the invention is also characterized in that it comprises an elastic mechanism so that the stand remains in a horizontal position when it is not actuated.

In a variant, the square according to the invention is also characterized in the elastic mechanism is a torsion spring positioned at the bottom of the tapping and secured to both parts.

In a variant, the square according to the invention is also characterized in that the mechanical characteristics of the material of the square are the following:

24 daN / mm ² <Re <100 daN / mm ² where Re is the elastic resistance of the material.

In a variant, the square according to the invention is also characterized in that the square is made of an aluminum alloy forming part of a series of between 1000 and 7000.

In a variant, the square according to the invention is also characterized in that the square has a section of between 5 and 10 millimeters.

In a variant, the square according to the invention is also characterized in that the pitch of the thread and the tapping is calculated so that the locking rotation ends in a predetermined position of the stand.

In a variant, the square according to the invention is also characterized in that the length of the threading and tapping is at least 5% of the total length of the square, but is less than a thickness of the door.

In a variant, the square according to the invention is also characterized in that the belleville washer is juxtaposed with a flat washer, on the opposite side to the follower.

Alternatively, the square according to the invention is also characterized in that the threaded portion has, in the extension of the thread, a cylindrical perforation extending axially to the end opposite the tapping.

In a variant, the square according to the invention is also characterized in that the elastic mechanism is a coil spring, supported on one side on a plug and on the other on a bolt, the assembly being positioned in the perforation and cooperating with a slot of the threaded portion.

The subject of the invention is also a method for mounting a square according to the invention, in which

- you tap a part of the square and spin the other part,

the two parts of the square are assembled end-to-end by screwing them to the contact, characterized in that the threaded portion is pierced axially, in the extension of the internal thread, until the end opposite the tapping is reached,

the pitch and the length of the threading and tapping are determined so that the longitudinal faces of the two parts of the square are coplanar with each other, to within five per cent, when the contact is reached,

a spacer is inserted between the two parts of the square,

positioning the two parts of the square in a parallelepipedal guide, or in two aligned guides,

the bolt is introduced into the perforation,

- we put the spring,

the stopper is placed at the opposite end to the tapping, the stopper having knurling,

the knurling is crimped into the perforation,

the tapped portion is pierced transversely, close to the tapping, and a pin is inserted therein.

The invention and its various applications will be better understood by reading the following description and examining the figures that accompany it. These are presented only as an indication and in no way limitative of the invention. The figures show:

- Figure 1, already described: a schematic representation of an example of door handle system according to the prior art;

FIG. 2, already described: a schematic representation of an example of an improved door handle according to the state of the art;

- Figure 3a: a side view of a schematic representation of an example of improved square handle according to the invention in a locked position;

- Figure 3b: a front view of a schematic representation of the same example of improved square handle according to the invention in a locked position.

- Figure 4: a side view of a schematic representation of another example of improved square handle according to the invention in a locked position.

FIG. 5 is a side view of a schematic representation of another example of mounting an improved square according to the invention provided with two friction washers.

- Figure 6: a sectional view of a schematic representation of another example of an improved square according to the invention.

Figure 3a shows a side view of an improved square door handle according to the invention in a locked position.

The parallelepiped square 9 consists of two parts 10 and 1 1 distinct and capable of cooperating with each other. Part 1 1 partially threaded by machining of the material, can be assembled by screwing to the part 10 which is threaded at least as much. These two parts 10 and 1 1 are locked together, in this embodiment of the square 9 according to the invention, by a movement of the left hand of a user, resulting in a rotation of the stand in a contrary direction 14 to an opening action of the opening and unlocked by a rotation of direction 15 corresponding to an opening action but of greater amplitude than that required for opening.

When the square 9 is in position in a door, the portion 10 having the tapping, having a length greater than the portion 1 1 having the thread, cooperates with the follower, i.e. the opening of the locking mechanism for receiving said square. An action on a stand attached to the part 10 is therefore directly transmitted to the locking mechanism. Conversely, an action on a stand attached to the part 1 1 is transmitted on the locking mechanism if the parts 10 and 11 are mutually locked.

The frictional locking of the two parts 10 and 1 1 of the axis to control the unlocking of the opening requires a force greater than that of a child. The two parts 10 and 1 1 of the axis are assembled by screwing with a washer 13 between them, a face of said washer being abutted against the follower to prevent transverse displacement of the square. This positioning makes it possible to let the thickness of the door exceed only the solid parts of the square 9. Thus, a user can always shorten and / or drill the square 9 on one side or the other.

It is the hardness of this washer 13 that determines the force required to lock / unlock the parts 10 and 1 1. In practice, it must at least that this force is greater than that required to open the opening by actuating a crutch. In an improvement, the two parts 10 and 1 1 of the axis are assembled with several washers, some being elastic and Belleville type washers. In this case, the belleville washers act as a spring and, therefore, amplify the friction phenomenon obtained by the screwing.

In a variant, the friction is obtained between the threading and the tapping by appropriate machining, for example conical.

In the invention, the return spring and the locking mechanism of the handles of the state of the art are deactivated.

The handle square 9 according to the invention comprises an elastic means, for example a spring 16 positioned at the bottom of the tapping, so that the stand remains in a horizontal position when it is not actuated.

The square 9 is made of an aluminum alloy belonging to a series of between 1000 and 7000. Furthermore, the mechanical characteristics of the square 9 are as follows:

24 daN / mm ² <Re <100 daN / mm ²

The mechanical characteristics of the washer 13 are as follows: 40 ≤ Hv <400, where Hv is the vickers hardness.

The axis 9 may have a section of between 5 and 10 millimeters. In this embodiment of the device according to the invention, the section of the axis is seven millimeters.

The thread is calculated so that the locking rotation 14 ends in a predetermined position. This predetermined position makes it possible to adjust the effect of the spring 16.

The length of the threaded and threaded portion 12 represents at least 5% of the total length of the axis 9.

Figure 3b shows a front view of a door handle square according to the invention in the same locked position as that of Figure 3a.

In a variant, the two parts of the square 9 are threaded and a grub screw is used which penetrates into each portion 10 and 1 1 of the square 9. This screw is fixed in the tapping of the portion 11 of the square 9 by a method which can be thermal, or mechanical, such as crimping, or chemical, by applying glue or threadlock.

The mechanical characteristics of such a screw are the following: 240 N / mm ² <Re <900 N / mm ² ; 95 <Hv <320 where Hv is a hardness called Vickers hardness. The Vickers hardness measurement is made with a standardized diamond pyramidal tip with a square base and an apex angle between faces equal to 136 °. The resulting imprint therefore has the form of a square; the two diagonals d ₁ and d ₂ of this square are measured using an optical device. The value d is obtained by averaging d ₁ and d ₂ . This is used to calculate the hardness. The strength and duration of support are also standardized. The degree of hardness, noted Hv, is then read on an abacus (a table); there is an abacus by force of support. Hv is defined by the following equation:

_{TY /} - _H i Load of the test)

H _V * = Constant - - i.-j --- »- u - n -e α fe-π 1 fingerprint-!

T JT. ai Ti i i ± H_]

0, 102 '- ^ ₅ ------

0, 1S9 - §

With d = (d2 + d1) / 2 d ₁ and d ₂ being measurements of the impressions made at 90 °, expressed in millimeters (two diagonals of the square of the imprint); F, a test load, expressed in Newtons; g, the acceleration of gravity; and a constant equal to 1 / g is about 0.102.

In a variant, if there is no threading of the square 9, then, one proceeds to a contrary bevel machining. The bevels are engaged by an action on the stand such as that described for blocking the square 9. Once engaged, the bevels solidarize the two parts of the square for unlocking the opening on the secure side. A sufficient amplitude of the opening movement can clear the bevels.

Figure 4 shows a side view of a schematic representation of another example of an improved square handle according to the invention in a locked position. The square is then constituted of three parts 18a, 18b and 19 distinct and capable of cooperating with each other, two 18a and 18b being partially threaded 21a and 21b, the other 19 being doubly threaded. The three parts 18a, 18b and 19 can be locked together by friction, two by two, turning the stand in a direction - 20a for part 18a and 20b for part 18b - contrary to an opening action of the opening and unlocking by a rotary movement of the crutch in a direction corresponding to an opening action but having a force greater than that required for opening.

The parallelepipedal portion of the portion 19 has a length approximately equal to the thickness 24 of the follower. Two washers 23a and 23b are abutted against the follower to prevent transverse displacement of the square.

In the embodiment of FIG. 5, the two parts 10 and 11 of the square are assembled with one another by means of two juxtaposed washers 13 and 24. The part 11, emerging from the opening 17, is threaded. It engages in the threaded portion 12 which, it, passes through the opening 17. The washer 24 is belleville type, i.e. conical profile, the other 13 is flat. The flat washer 13 is positioned on the opposite side to the follower, in contact with a recess of the emergent part 1 1 at the place where it is extended by its threading 12b. The washer 24 is placed so that its base having the largest diameter is in contact with the flat washer 13 and its base having the smallest diameter is in contact with the top of the threaded portion 10 of the square.

In the normal position, the stand, on the side of the opening secured by the invention, is crazy. Moreover, in FIG. 5, it can be seen that the emergent part 1 1 of the square seems thicker than the part 10. In fact, it has the same size, but FIG. 5 in profile shows the part 1 in a diagonal plane. and not median because, schematically, the stand has rocked 45 °. However, it must be kept horizontal for aesthetic reasons. The crazy character means that a conventional action on this stand is not transmitted to the locking / unlocking mechanism of the door, and therefore does not open the door.

To open, first lift the jack with great force, then lower it normally with a lower force. The lifting has the effect of screwing the thread 12b in the tapping 12a. It is observed that, depending on the side of the opening to be equipped, the pitch of the thread 12b and the tapping 12a must be direct or inverted.

To return to the normal position, in which the stand is crazy, it is necessary to continue the opening movement beyond the movement required for this opening, and to force (with a greater force than the weak force) to separate, unscrew, parts 10 and 11 of the square. Figure 6 shows schematically a sectional view of an embodiment of an improved square according to the invention.

In this example, the torsion spring 16 is removed to be replaced by an elastic mechanism described below. In the normal position, the stand on the secured side of the invention is held horizontally by the elastic mechanism.

The tapped portion 10 has, in the extension of the tapping 12a, a cylindrical perforation 25 extending axially to the end

26 opposed to tapping 12a. The elastic mechanism comprises a spring

27 on the other hand, the spring 27 bears against a bolt 29. The assembly is positioned in the perforation 25. The cap 28 has a knurling 31 for to be crimped in the perforation 25. More specifically, a tail 33 of the bolt 29 slides within the cap 28 and is subjected to a pressure exerted by the spring 27. The bolt 29 comprises, on the other side of the tail 33, a flat triangular head 34. The head 34 is formed by a dihedron which surrounds a circular cylinder. The stop of the cylinder forms a screwdriver failure. This failure engages in a slot machined in one end of the threaded portion 11. The crenellated profile is perpendicular to a diameter of this thread 12b. The depth of the slot 30 is deployed according to this diameter. The failure matches the shape of the slot during an assembly of the two parts 10 and 11 of the square. Any rotation of the stand located on the secure side rotates the head 34 of the bolt 29 is the out of the slot 30. The stand is held horizontally when the bolt 29 is pressed into the slot 30, the part 1 1 be crazy or screwed.

The threaded portion 10 is pierced transversely, near the end of the tapping 12a to accommodate a pin 32. For this purpose, the threaded portion 1 1, see also sectional detail, is extended by a protuberance which comprises a base with a entablature 35, an intermediate mast 36, and an anvil 37 in which is made the slot 30. At the location of the mast 36 the protuberance is narrower. It has the shape of a circular cylinder. The pin 32, engaged between the entablature 35 and the anvil 37, is able to prevent the two parts 10 and 1 1 of the square to be unscrewed completely by a user, once the square is installed in a handle. We understand by proximity, a distance of the order of a few millimeters not exceeding two centimeters.

In a preferred embodiment of the square according to the invention, the various elements constituting the square are made of stainless type material Stainless 331.

A method of mounting a square according to the invention comprises steps in which, not necessarily in this order,

- Tapping the part 10 of the square and spinning the other part 1 1,

the pitch and the length of the thread 12b and the tapping 12a are determined so that the longitudinal faces of the two parts 10 and 11 of the square are coplanar with each other, to within five per cent, when the contact between the two parts 10 and 11 is reached,

the threaded part 10 is drilled axially, in the extension of the internal thread 12a, until it reaches the end 26 opposite the tapping 12a,

a belleville washer 24 and a flat washer 13 are inserted between the two parts 10 and 11 of the square, the two washers being juxtaposed in the same manner as in FIG. 5,

the two parts 10 and 11 of the square are assembled end-to-end by screwing them to the contact,

positioning the two parts 10 and 11 of the square in a parallelepipedal guide, or in two aligned guides,

the bolt 29 is introduced into the perforation 25,

the stopper 28 is placed at the end opposite the tapping 12, the stopper 28 having a knurling 31,

the knurling 31 is crimped into the perforation 25,

- the spring 27 is placed,

the tapped portion 10 is pierced transversely, close to the tapping 12, and the pin 32 is inserted therein.

The fact that the longitudinal faces of the two parts 10 and 11 of the square are coplanar with each other, to within five percent, when the contact between the two parts 10 and 1 1 is reached, allows the technician, who introduces the square in the guide, to perfect the alignment of the faces by exerting only a tiny rotational movement of a portion 10 of the square relative to the other 1 1.

In a preferred example of implementation of the method according to the invention carbonitride the various elements constituting the square.

Claims

1 - Advanced square (9) handle for door, window or any other element said opening, the square

- being constituted of two distinct parts and able to cooperate with each other, one (1 1) being threaded, the other (10) being threaded, characterized in that

- The two parts are assembled by screwing with at least one washer (13) between them, and locked together by friction of both on the washer,

this friction being achieved by turning the stand in one direction (14) contrary to an opening action of the sash,

- This friction is released for unlocking by a rotary movement of the stand in a direction (15) corresponding to an opening action, but so that the unlocking force is greater than that required for opening, and is exercised beyond the opening.

2 - Advanced square handle for door, window or any other element called opening, the square

- being constituted of three parts (18a, 18b, 19) distinct and capable of cooperating with each other, two being threaded, the other being doubly threaded, characterized in that

- The three parts are assembled by screwing with two washers (23a; 23b) between them, and locked together by friction of all three on the washers,

3 - Advanced handle square according to the preceding claim, characterized in that the locking of the two parts to control the unlocking of the opening requires a force and psychomotricity higher than those of a young child.

4 - Advanced handle square according to one of the preceding claims, characterized in that a face of the washer is abutted against the follower.

5 - Advanced handle square according to one of the preceding claims, characterized in that the connecting washer is elastic and belleville washer type.

6 - Advanced handle square according to one of the preceding claims, characterized in that the portion having the thread (12a), having a length greater than the portion having the thread (12b), cooperates with the follower.

7 - Advanced handle square according to one of the preceding claims, characterized in that the thread is obtained by machining the material.

8 - Advanced handle square according to one of claims 1 to 6, characterized in that the threading is obtained by screwing and by thermal fixing, or mechanical or chemical screw grub screw within the shortest part square.

9 - Advanced handle square according to at least one of the preceding claims, characterized in that it comprises an elastic mechanism so that the stand remains in the horizontal position when not actuated. 10 - Advanced handle square according to claim 8 characterized in that the elastic mechanism is a torsion spring (16) positioned at the bottom of the thread and secured to both parts.

1 1 - Advanced handle square according to at least one of the preceding claims, characterized in that its mechanical characteristics of the material of the square are the following:

24 daN / mm ² <Re ≤ 100 daN / mm ² where Re is the elastic resistance of the material.

12 - Advanced handle square according to at least one of the preceding claims, characterized in that the square is made of an aluminum alloy forming part of a series between 1000 and 7000.

13 - Advanced handle square according to at least one of the preceding claims, characterized in that the square has a section between 5 and 10 millimeters.

14 - Advanced handle square according to at least one of the preceding claims, characterized in that the screw thread and thread is calculated so that the locking rotation ends in a predetermined position of the stand.

15 - improved handle square according to at least one of the preceding claims, characterized in that the length of the thread and tapping is at least 5% of the total length of the square, but is less than a thickness (17) of the door.

16 - Square according to at least one of the preceding claims, characterized in that the belleville washer is juxtaposed with a flat washer (24) on the side opposite the follower.

17 - Square according to one of claims 1 and 3 to 16, characterized in that the threaded portion has, in the extension of the thread, a cylindrical perforation (25) extending axially to the end (26) opposite tapping.

18 - Square according to one of claims 9 and 10 to 17, characterized in that the elastic mechanism is a coil spring (27), supported on one side on a plug (28) and on the other on a bolt (29), the assembly being positioned in the perforation and cooperating with a slot (30) of the threaded portion. 19 - Method for mounting a square according to one of claims 1 and 3 to 18, wherein

- you tap a part of the square and spin the other part,

the two parts of the square are assembled end-to-end by screwing them to the contact, characterized in that

the threaded portion is pierced axially, in the extension of the internal thread, until the end opposite the tapping is reached,

a spacer is inserted between the two parts of the square,

the bolt is introduced into the perforation,

- we put the spring,

the stopper is placed at the opposite end to the tapping, the stopper having a knurling (31),

the knurling is crimped into the perforation,

- The threaded portion is drilled transversely, close to the tapping and a pin (32) is introduced.