EP3724432B1 - Door-stopping device with infinite holding positions - Google Patents

Description

The present invention relates to a door stop device, comprising a locking mechanism and a connecting arm, one being designed to be secured to the door leaf, the other to the frame, said arm. connection comprising at least one face intended to cooperate with a braking element bearing on said face of the linkage arm, said braking element being controlled by a locking element bearing in a notch provided on the braking element , said locking element cooperating with resilient return means intended to exert a pressure of the locking element on the braking element, thus allowing the relative maintenance of the door in the open position in any position between the closed position and full opening.

The invention relates to the field of door stop devices and will find a very particular application in the fields of openings for cars, buildings and household appliances.

We already know from the document FR 3 046 193 , filed by the applicant, a door stop device allowing the stopping and maintaining of a swing or sliding door, in one of the multiple positions defined by retaining notches located on the link arm, as soon as the 'we cease to exert the force necessary for the opening or closing maneuver, in particular with possible applications to the doors of motor vehicles.

• d'un bras de liaison pourvu de multiples encoches dans chacune desquelles peut venir se loger un élément de blocage, permettant ainsi d'assurer le verrouillage du dispositif d'arrêt de porte dans de multiples positions ;
• d'un chariot mobile qui coulisse le long du bras de liaison sur lequel il est monté tout en offrant une certaine résistance au déplacement, permettant ainsi de maintenir l'élément de blocage en position déverrouillée sur des rampes inclinées que comporte ledit chariot mobile, lorsqu'un mouvement relatif apparaît entre le bras de liaison et le mécanisme de verrouillage, le dispositif d'arrêt de porte étant dans ce cas en mode déverrouillé. La résistance au glissement relatif entre le bras de liaison et le chariot mobile peut être obtenue par simple friction entre deux surfaces en contact appartenant respectivement à chacun de ces deux éléments, mais encore par l'ajout d'un dispositif de freinage pouvant être constitué par un patin de frein solidaire du chariot mobile et repoussé par des moyens élastiques au contact d'une surface appartenant au bras de liaison ;

• d'un élément de blocage venant en appui dans l'une quelconque des encoches que comporte le bras de liaison sous l'effet de moyens de rappel élastique, ledit élément de blocage étant lui-même monté mobile sur le mécanisme de verrouillage, suivant une direction comportant une composante globalement perpendiculaire au bras de liaison, de sorte qu'il peut être écarté des encoches dudit bras de liaison, afin de libérer ce dernier ;
• de moyens de rappel élastique solidaires du mécanisme de verrouillage et agissant directement ou indirectement sur l'élément de blocage suivant une direction comportant une composante globalement perpendiculaire au bras de liaison. Les moyens de rappel élastique peuvent être constitués d'un ensemble métallique ou plastique, ou encore constitués d'un mélange de ces matériaux, par exemple un ensemble comprenant un ressort hélicoïdal ou des lames élastiques, ou encore d'un élément déformable, tel un bloc élastomère.

Thus, the door stop device with multiple holding positions described in the document FR 3 046 193 consists, substantially:

• a link arm provided with multiple notches in each of which can be accommodated a locking element, thus making it possible to ensure the locking of the door stop device in multiple positions;
• a movable carriage which slides along the link arm on which it is mounted while offering a certain resistance to movement, thus making it possible to maintain the locking element in the unlocked position on inclined ramps that the said movable carriage comprises, when 'a relative movement appears between the link arm and the locking mechanism, the door stop device being in this case in unlocked mode. The resistance to relative sliding between the link arm and the movable carriage can be obtained by simple friction between two contacting surfaces belonging respectively to each of these two elements, but also by the addition of a braking device which can be constituted by a brake shoe integral with the movable carriage and pushed back by resilient means in contact with a surface belonging to the link arm;

• of a locking element coming to bear in any one of the notches that the link arm comprises under the effect of elastic return means, said locking element itself being mounted movably on the locking mechanism, according to a direction comprising a component generally perpendicular to the link arm, so that it can be moved away from the notches of said link arm, in order to release the latter;
• elastic return means integral with the locking mechanism and acting directly or indirectly on the locking element in a direction comprising a component generally perpendicular to the link arm. The elastic return means may consist of a metal or plastic assembly, or even consist of a mixture of these materials, for example an assembly comprising a helical spring or elastic leaves, or else of a deformable element, such as a elastomer block.

However, this door stop device is known to impose multiple stop positions but nevertheless predefined, so that the maintenance of the door cannot be done in any position, but in one of the positions. predefined positions, thus limiting the use of all of the travel actually available for opening and maintaining said door.

The present invention proposes a solution to remedy this drawback, while making the design of the door stop device appreciably more robust: the present invention provides for the locking element to act indirectly via a braking element. bearing with a certain friction on at least one face of the link arm provided for this purpose, while a carriage movable in longitudinal translation with respect to the link arm on which it is mounted, and with a limited clearance with respect to the body of said locking mechanism, is provided with inclined ramps provided to ensure the maintenance of said locking element when the door stop device is in the unlocked position, said locking element then no longer acting on said braking element.

• ledit bras de liaison comporte au moins une face destinée à coopérer avec l'élément de freinage décrit ci-après et venant en appui sur ladite face du bras de liaison, laquelle face du bras de liaison possède un état de surface dont les caractéristiques permettent une bonne adhérence par friction entre ledit élément de freinage et ladite face du bras de liaison, permettant ainsi d'assurer le verrouillage du dispositif d'arrêt de porte dans une position quelconque entre la position fermée et la pleine ouverture de la porte ;
• ledit mécanisme de verrouillage comporte :
• au moins un élément de freinage possédant une face pouvant venir en appui avec une bonne adhérence sur une face dudit bras de liaison située en vis-à-vis de ladite face de l'élément de freinage, tandis que ledit élément de freinage comporte au moins une encoche destinée à recevoir un élément de blocage décrit ci-après et lequel exerce une pression sur ledit élément de freinage lorsque le dispositif d'arrêt de porte est en mode verrouillé, tandis que ledit élément de freinage est monté mobile par rapport au mécanisme de verrouillage, selon une direction parallèle audit bras de liaison et selon un débattement limité par des moyens de rappel élastique qui coopèrent avec le mécanisme de verrouillage en vue de ramener ledit élément de freinage dans la position où ladite encoche de l'élément de freinage se trouve en vis-à-vis dudit élément de blocage, dès lors que ledit élément de blocage n'exerce plus de pression sur ledit élément de freinage, lorsque le dispositif d'arrêt de porte est en mode déverrouillé ;

• au moins un élément de blocage qui commande ledit élément de freinage en venant en appui, sous l'effet de moyens de rappel élastique décrits ci-après, dans l'encoche prévue à cet effet que comporte ledit élément de freinage, tandis que ledit élément de blocage est lui-même monté mobile sur le mécanisme de verrouillage, suivant une direction globalement perpendiculaire audit bras de liaison, de sorte que ledit élément de blocage peut être écarté de l'encoche que comporte ledit élément de freinage, afin de libérer ce dernier ;
• des moyens de rappel élastique, solidaires du mécanisme de verrouillage ou de l'élément de blocage, qui agissent directement ou indirectement entre ledit mécanisme de verrouillage et ledit élément de blocage, suivant une direction globalement perpendiculaire audit bras de liaison. Les moyens de rappel élastique peuvent être constitués d'un ensemble métallique ou plastique, ou encore constitués d'un mélange de ces matériaux, par exemple un ensemble comprenant un ressort hélicoïdal ou des lames élastiques, ou encore d'un élément déformable, tel un bloc élastomère ;
• un chariot mobile qui coulisse le long dudit bras de liaison sur lequel il est monté et avec un débattement limité par rapport au corps dudit mécanisme de verrouillage, tout en offrant une certaine résistance au déplacement, permettant ainsi de maintenir ledit élément de blocage en dehors de ladite encoche que comporte l'élément de freinage, par un appui sur des rampes inclinées que comporte ledit chariot mobile, lorsqu'un mouvement relatif apparaît entre le bras de liaison et le mécanisme de verrouillage, le dispositif d'arrêt de porte étant alors en mode déverrouillé. La résistance au glissement relatif entre ledit bras de liaison et ledit chariot mobile peut être obtenue par simple friction entre deux surfaces en contact appartenant respectivement à chacun de ces deux éléments, mais encore par l'ajout d'un dispositif de freinage pouvant être constitué par un patin de frein solidaire dudit chariot mobile et repoussé par des moyens élastiques au contact d'une surface appartenant audit bras de liaison.

To this end, the invention relates to a door stop device, comprising a locking mechanism and a connecting arm, one being designed to be secured to the door leaf, the other to the frame, the connections with the frame and the opening being preferably articulated. Said link arm comprising at least one face intended to cooperate with said locking mechanism which for this purpose comprises a braking element bearing on said face of the link arm, said braking element being controlled by a movably mounted locking element on said locking mechanism, in a direction generally perpendicular to the link arm and said locking element resting in a notch provided on said braking element, while said locking element cooperates with elastic return means which act directly or indirectly on said locking element, to exert pressure through said locking element on the braking element, thus allowing the relative maintenance of the door in opening in any position between the closed position and the fully open position, remarkable by the fact that :

• said link arm comprises at least one face intended to cooperate with the braking element described below and resting on said face of the link arm, which face of the link arm has a surface condition whose characteristics allow a good friction adhesion between said braking element and said face of the link arm, thus making it possible to ensure the locking of the door stop device in any position between the closed position and the full opening of the door;
• said locking mechanism comprises:
• at least one braking element having a face which can bear with good adhesion on one face of said link arm located opposite said face of the braking element, while said braking element comprises at least a notch intended to receive a blocking element described below and which exerts pressure on said brake element when the door stop device is in locked mode, while said brake element is mounted movable relative to the locking mechanism, in a direction parallel to said link arm and according to a movement limited by elastic return means which cooperate with the locking mechanism in order to return said braking element to the position where said notch of the 'braking element is located opposite said locking element, as soon as said locking element no longer exerts pressure on said braking element, when the door stop device is in unlocked mode;

• at least one locking element which controls said braking element by resting, under the effect of elastic return means described below, in the notch provided for this purpose in said braking element, while said element locking mechanism is itself movably mounted on the locking mechanism, in a direction generally perpendicular to said link arm, so that said locking element can be moved away from the notch in said braking element, in order to release the latter ;
• elastic return means, integral with the locking mechanism or the locking element, which act directly or indirectly between said locking mechanism and said locking element, in a direction generally perpendicular to said link arm. The elastic return means may consist of a metal or plastic assembly, or even consist of a mixture of these materials, for example an assembly comprising a helical spring or elastic leaves, or else of a deformable element, such as a elastomeric block;
• a movable carriage which slides along said link arm on which it is mounted and with a limited clearance relative to the body of said locking mechanism, while offering a certain resistance to movement, thus making it possible to maintain said locking element out of said notch that the braking element comprises, by resting on inclined ramps that said movable carriage comprises, when a relative movement occurs between the link arm and the locking mechanism, the door stop device then being in operation unlocked mode. The resistance to relative sliding between said connecting arm and said movable carriage can be obtained by simple friction between two contacting surfaces belonging respectively to each of these two elements, but also by the addition of a braking device which can be constituted by a brake shoe integral with said movable carriage and pushed back by elastic means in contact with a surface belonging to said link arm.

Variant of the braking element and of the movable carriage: in a preferred embodiment, the braking element and the movable carriage can be made integral so as to form one and the same part. The notch which the braking element comprises and which is intended to receive the locking element will then be extended on each side by inclined ramps, the inclination of which will preferably be smaller than the inclination of the walls of said notch. includes the braking element. Said inclined ramps will be supported on a surface belonging to said link arm in order to take up the force exerted by said locking element when the door stop device is in unlocked mode. The assembly thus formed by the braking element and the movable carriage joined together, will be able to slide along said link arm on which it is mounted and with a limited clearance relative to the body of said locking mechanism, while offering a certain resistance. movement, thus making it possible to maintain said locking element outside the notch that comprises said assembly constituted by the braking element and the movable carriage joined together, by resting on the inclined ramps that comprise said assembly constituted by the element brake and the movable carriage together, when a relative movement occurs between the link arm and the locking mechanism, the door stop device then being in unlocked mode. The resistance to relative sliding between the link arm and said assembly formed by the braking element and the movable carriage joined together, can be obtained by simple friction between two contacting surfaces belonging respectively to each of these two elements.

Variant of the elastic return means: in a preferred embodiment, a variant of the elastic return means can be constituted by the addition of a transmission means provided between the elastic return means on the one hand, and the element locking mechanism or the locking mechanism, on the other hand, said transmission means being constituted by at least two surface elements, at least one of which is curved, said surface elements cooperating with each other according to a relative movement in two directions which are generally perpendicular to each other. Said surface elements cooperate so as to transmit the force supplied by the elastic return means and such that the direction of the support force transmitted to the point of contact between said surface elements, evolves as the elastic return means are compressed. Thus, when the angle defined by the direction of the force transmitted to the point of contact with respect to the direction of compression of the elastic return means is small, the perpendicular component acting on said locking element is small, which presents a advantage in unlocked mode. Conversely, when the angle defined by the direction of the force transmitted to the point of contact with respect to the direction of compression of the elastic return means is close to 90 °, the perpendicular component acting on the locking element is high, which has an advantage in locked mode. The desired purpose is to obtain a high holding force in locked mode, and to reduce the force of bearing said locking element against the inclined ramps of the mobile carriage, when the door stop device is in unlocked mode, thus making it possible to reduce the resistance to relative sliding between the link arm and the mobile carriage, necessary for the balance of the forces undergone by the mobile carriage in said unlocked mode. Maneuvering the door in unlocked mode then requires less effort.

Another variant of the elastic return means: according to the invention, the elastic return means are integral with the locking mechanism or the locking element and act directly or indirectly between said locking mechanism and said locking element, in a direction generally perpendicular to the link arm. According to one of the embodiments of the elastic return means, the invention proposes to modulate the value of the force supplied by said elastic return means, according to the inclination of the locking mechanism, in order to make it possible to modulate the holding force in locked mode, depending on the inclination of said locking mechanism. To this end, the invention proposes to produce the elastic return means by superimposing the effects of at least two distinct elastic return means, arranged so that the forces they provide can be accumulated in the same direction, when 'a mechanical connection means described below is interposed between said separate elastic return means, or between one of the separate elastic return means and the locking mechanism, under the simple effect of gravity. The mechanical connection means acting under the simple effect of gravity can advantageously be formed of a spherical ball housed in a resistant conical surface, said resistant conical surface being integral with one of the separate elastic return means or else integral with the control mechanism. lock, said resistant conical surface which is otherwise centered in relation to a rigid surface located on one of the other elastic return means or centered in relation to a rigid surface located on the locking mechanism, said rigid surface comprising in its center a cavity making it possible to receive the spherical ball when the resistant conical surface and the rigid surface described above approach one another following the movement of the locking element described above. before, while the spherical ball has remained in the center of the resistant conical surface under the effect of gravity, the door stop device then not being tilted. In this case, those of the elastic return means which are not stressed during the movement of the locking element, are therefore not put into compression and therefore do not participate in the force imposed on the locking element. Conversely, when the spherical ball leaves the center of said resistant conical surface under the effect of gravity, due to an inclination beyond a predetermined threshold of the door stop device, said spherical ball comes between said resistant conical surface and said rigid surface described above, thus constituting a mechanical link allowing the corresponding elastic return means to be put into compression by the movement of said locking element, thus causing an accumulation of forces provided by each of the separate elastic return means. Thus, when the inclination of the door stop device remains below a certain predetermined threshold, one of the elastic return means is not requested by the movement of the locking element and the force. resulting on said locking element is lower. Conversely, when the inclination of the door stop device exceeds a certain predetermined threshold, the separate elastic return means are actuated simultaneously by the movement of the locking element and the resulting force on said locking element. is more important.

• Fig. 1 : représentation du dispositif d'arrêt de porte comportant un bras de liaison (1) et un mécanisme de verrouillage (2), lorsque le dispositif d'arrêt de porte est en mode verrouillé.
• Fig. 2 : représentation du dispositif d'arrêt de porte comportant un bras de liaison (1) et un mécanisme de verrouillage (2), lorsque le dispositif d'arrêt de porte est en mode déverrouillé.
• Fig. 3 : bras de liaison (1), mécanisme de verrouillage (2) et chariot mobile (3), lorsque le dispositif d'arrêt de porte est en mode verrouillé.
• Fig. 4 : bras de liaison (1), mécanisme de verrouillage (2) et chariot mobile (3), lorsque le dispositif d'arrêt de porte est en cours de déverrouillage.
• Fig. 5 : bras de liaison (1), mécanisme de verrouillage (2) et chariot mobile (3), lorsque le dispositif d'arrêt de porte est en mode déverrouillé.
• Fig. 6 : variante des moyens de rappel élastique (24) en mode verrouillé.
• Fig. 7 : variante des moyens de rappel élastique (24) en mode déverrouillé.
• Fig. 8 : autre variante des moyens de rappel élastique (24), montrant deux moyens de rappel élastique (24) et (29) distincts, dispositif d'arrêt de porte en mode verrouillé.
• Fig. 9 : autre variante des moyens de rappel élastique (24), montrant deux moyens de rappel élastique (24) et (29) distincts, dispositif d'arrêt de porte en mode déverrouillé, en position non inclinée, sans cumul des efforts.
• Fig. 10 : autre variante des moyens de rappel élastique (24), montrant deux moyens de rappel élastique (24) et (29) distincts, dispositif d'arrêt de porte en mode déverrouillé, en position inclinée, avec cumul des efforts.
• Fig. 11 : autre variante des moyens de rappel élastique (24), montrant deux moyens de rappel élastique (24) et (29) distincts, avec la surface conique résistante (292) solidaire du mécanisme de verrouillage (2), dispositif d'arrêt de porte en mode verrouillé.
• Fig. 12 : autre variante des moyens de rappel élastique (24), montrant deux moyens de rappel élastique (24) et (29) distincts, avec la surface conique résistante (292) solidaire du mécanisme de verrouillage (2), dispositif d'arrêt de porte en mode déverrouillé, en position non inclinée, sans cumul des efforts.
• Fig. 13 : autre variante des moyens de rappel élastique (24), montrant deux moyens de rappel élastique (24) et (29) distincts, avec la surface conique résistante (292) solidaire du mécanisme de verrouillage (2), dispositif d'arrêt de porte en mode déverrouillé, en position inclinée, avec cumul des efforts.
• Fig. 14 : variante du bras de liaison (1) comprenant une partie cylindrique (15).
• Fig. 15 : variante de l'élément de freinage (21) et du chariot mobile (3) regroupés en une seule pièce.

Other objects and advantages of the present invention will appear in the description which follows, relating to an embodiment of the device proposed by the invention, having non-limiting example value and the understanding of which will be facilitated by referring to the attached drawings, which constitute schematic representations of the device proposed by the invention:

• Fig. 1 : representation of the door stop device comprising a link arm (1) and a locking mechanism (2), when the door stop device is in locked mode.
• Fig. 2 : representation of the door stop device comprising a link arm (1) and a locking mechanism (2), when the door stop device is in unlocked mode.
• Fig. 3 : link arm (1), locking mechanism (2) and mobile carriage (3), when the door stop device is in locked mode.
• Fig. 4 : link arm (1), locking mechanism (2) and mobile carriage (3), when the door stop device is being unlocked.
• Fig. 5 : link arm (1), locking mechanism (2) and mobile carriage (3), when the door stop device is in unlocked mode.
• Fig. 6 : variant of the elastic return means (24) in locked mode.
• Fig. 7 : variant of the elastic return means (24) in unlocked mode.
• Fig. 8 : another variant of the elastic return means (24), showing two separate elastic return means (24) and (29), door stop device in locked mode.
• Fig. 9 : another variant of the elastic return means (24), showing two separate elastic return means (24) and (29), door stop device in unlocked mode, in non-inclined position, without cumulative forces.
• Fig. 10 : another variant of the elastic return means (24), showing two separate elastic return means (24) and (29), door stop device in unlocked mode, in inclined position, with cumulative forces.
• Fig. 11 : another variant of the elastic return means (24), showing two separate elastic return means (24) and (29), with the resistant conical surface (292) integral with the locking mechanism (2), door stop device in locked mode.
• Fig. 12 : another variant of the elastic return means (24), showing two separate elastic return means (24) and (29), with the resistant conical surface (292) integral with the locking mechanism (2), door stop device in unlocked mode, in non-tilted position, without cumulative forces.
• Fig. 13 : another variant of the elastic return means (24), showing two separate elastic return means (24) and (29), with the resistant conical surface (292) integral with the locking mechanism (2), door stop device in unlocked mode, in inclined position, with cumulative forces.
• Fig. 14 : variant of the link arm (1) comprising a cylindrical part (15).
• Fig. 15 : variant of the braking element (21) and of the movable carriage (3) grouped together in a single piece.

• Un bras de liaison (1), préférentiellement articulé à l'une de ses extrémités, pouvant être rendu solidaire du dormant de la porte ou de l'ouvrant, formé avantageusement d'une barre de forme allongée et préférentiellement rectiligne, réalisée dans un matériau résistant tel du métal ou encore un plastique utilisé dans la conception de pièces mécaniques, pouvant offrir au moins une face (11) destinée à coopérer avec un élément de freinage (21) décrit ci-après et venant en appui sur ladite face (11) du bras de liaison (1), laquelle face (11) du bras de liaison (1) possède un état de surface dont les caractéristiques permettent une bonne adhérence par friction entre l'élément de freinage (21) et ladite face (11) du bras de liaison (1), permettant ainsi d'assurer le verrouillage du dispositif d'arrêt de porte dans une position quelconque entre la position fermée et la pleine ouverture de ladite porte. Le bras de liaison (1) peut comporter au moins une, voire préférentiellement deux rainures (12) (Fig. 3), sur l'une ou plusieurs de ses faces, afin d'accueillir au moins une, voire préférentiellement deux nervures (33) appartenant au chariot mobile (3) décrit ci-après, ceci afin de permettre le maintien dudit chariot mobile (3) relativement au bras de liaison (1) tout en permettant un coulissement longitudinal dudit chariot mobile (3) relativement au bras de liaison (1). L'invention ne sera pas modifiée si l'on inverse la disposition des rainures et nervures entre le bras de liaison (1) et le chariot mobile (3), ce que l'homme de l'art comprendra comme une évidence. Enfin, l'invention prévoit que le bras de liaison (1), mobile par rapport au mécanisme de verrouillage (2) décrit ci-après, pourra, selon un mode de réalisation préférentiel, coulisser au contact d'une zone d'appui (34), solidaire dudit chariot mobile (3) (Fig. 4), afin de reprendre les efforts appliqués indirectement par l'élément de blocage (23) décrit ci-après, sur le bras de liaison (1). Ladite zone d'appui (34) pourra être constituée d'une pièce en élastomère de forme plane et dont l'état de surface de la zone en contact avec le bras de liaison (1) permettra un freinage relatif par friction entre ledit bras de liaison (1) et ledit chariot mobile (3), lorsqu'un effort d'appui intervient du fait de la force transmise indirectement par ledit élément de blocage (23) sur le bras de liaison (1). L'invention prévoit encore que le bras de liaison (1) pourra coulisser au contact d'au moins une zone d'appui (25), solidaire du mécanisme de verrouillage (2), de forme préférentiellement plane et rectiligne (Fig. 1), afin de reprendre les efforts appliqués indirectement par l'élément de blocage (23) sur ledit bras de liaison (1), dans les modes verrouillés ou déverrouillés du mécanisme de verrouillage (2), tout en permettant un guidage relatif dudit bras de liaison (1) par rapport au mécanisme de verrouillage (2). Ladite zone d'appui (25) pourra être simplement constituée d'une ou plusieurs nervures solidaires des parois du mécanisme de verrouillage (2), que l'homme de l'art pourra réaliser sans difficultés ;
• Un mécanisme de verrouillage (2) (Fig. 1), mobile par rapport au bras de liaison (1) et apte à être solidarisé de l'ouvrant de la porte ou du dormant au moyen d'une liaison préférentiellement articulée selon un axe perpendiculaire à l'axe longitudinal du bras de liaison (1), schématisée ici au moyen d'une patte de fixation (28) (Fig. 1), ledit mécanisme de verrouillage (2) étant prévu pour coopérer avec ledit bras de liaison (1) de façon à maintenir verrouillé le bras de liaison (1) dans une position quelconque, tant que l'on n'applique pas sur la porte un effort supérieur à la force de déverrouillage prédéfinie.

The example of an embodiment of the door stop device proposed by the present invention is constituted by ( Fig. 1 ):

• A connecting arm (1), preferably articulated at one of its ends, which can be made integral with the frame of the door or the opening, advantageously formed of a bar of elongated and preferably rectilinear shape, made of a material resistant such as metal or a plastic used in the design of mechanical parts, which can offer at least one face (11) intended to cooperate with a braking element (21) described below and bearing on said face (11) of the link arm (1), which face (11) of the link arm (1) has a surface condition whose characteristics allow good friction adhesion between the braking element (21) and said face (11) of the link arm (1), thus making it possible to ensure the locking of the door stop device in any position between the closed position and the full opening of said door. The link arm (1) may include at least one, or even preferably two grooves (12) ( Fig. 3 ), on one or more of its faces, in order to accommodate at least one, or even preferably two ribs (33) belonging to the movable carriage (3) described below, in order to allow said movable carriage (3) to be held in place. ) relative to the link arm (1) while allowing longitudinal sliding of said movable carriage (3) relative to the link arm (1). The invention will not be modified if the arrangement of the grooves and ribs between the link arm (1) and the movable carriage (3) is reversed, which those skilled in the art will understand as obvious. Finally, the invention provides that the link arm (1), movable relative to the locking mechanism (2) described below, may, according to a preferred embodiment, slide in contact with a bearing zone ( 34), integral with said movable carriage (3) ( Fig. 4 ), in order to take up the forces applied indirectly by the locking element (23) described below, on the link arm (1). Said bearing zone (34) may consist of an elastomeric part of planar shape and whose surface condition of the zone in contact with the link arm (1) will allow relative braking by friction between said control arm. link (1) and said movable carriage (3), when a support force occurs due to the force transmitted indirectly by said locking element (23) on the link arm (1). The invention also provides that the link arm (1) can slide in contact with at least one bearing zone (25), integral with the locking mechanism (2), of preferentially flat and rectilinear shape ( Fig. 1 ), in order to take up the forces applied indirectly by the locking element (23) on said connecting arm (1), in the locked or unlocked modes of the locking mechanism (2), while allowing relative guidance of said link arm (1) with respect to the locking mechanism (2). Said bearing zone (25) may simply consist of one or more ribs integral with the walls of the locking mechanism (2), which a person skilled in the art will be able to produce without difficulty;
• A locking mechanism (2) ( Fig. 1 ), movable relative to the link arm (1) and able to be secured to the door leaf or frame by means of a link preferably articulated along an axis perpendicular to the longitudinal axis of the link arm (1 ), shown schematically here by means of a fixing bracket (28) ( Fig. 1 ), said locking mechanism (2) being provided to cooperate with said link arm (1) so as to keep the link arm (1) locked in any position, as long as the door is not applied a force greater than the predefined unlocking force.

• un élément de freinage (21), qui possède une face (211) pouvant venir en appui avec une bonne adhérence sur une face (11) du bras de liaison (1), située en vis-à-vis de la face (211) de l'élément de freinage (21), tandis que ledit élément de freinage (21) comporte une encoche (212) (Fig. 5), destinée à recevoir l'élément de blocage (23) décrit ci-après, lequel exerce une pression sur ledit élément de freinage (21), lorsque le dispositif d'arrêt de porte est en mode verrouillé. Ledit élément de freinage (21) est par ailleurs monté mobile par rapport au mécanisme de verrouillage (2) selon une direction parallèle au bras de liaison (1) et selon un débattement limité par des moyens de rappel élastique (22) qui coopèrent avec le mécanisme de verrouillage (2) en vue de ramener ledit élément de freinage (21) dans une position centrale, où l'encoche (212) dudit élément de freinage (21) se trouve en vis-à-vis de l'élément de blocage (23), dès lors que ledit élément de blocage (23) n'exerce plus de pression sur l'élément de freinage (21), ce qui se produit lorsque le dispositif d'arrêt de porte est en mode déverrouillé (Fig. 5). L'élément de freinage (21) pourra être constitué par un bloc en élastomère de forme par exemple parallélépipédique, suffisamment rigide pour pouvoir y réaliser l'encoche (212) qui sera prévue avec une forme en V dans le mode de réalisation présenté dans cet exemple non limitatif. Par ailleurs, le matériau élastomère de l'élément de freinage (21), possède une bonne adhérence par rapport au matériau constitutif du bras de liaison (1) qui sera prévu en métal ou en plastique dans cet exemple. Par ailleurs, l'adhérence entre le bras de liaison (1) et l'élément de freinage (21) peut être obtenue également par toutes dispositions bien connues de l'homme de l'art, telle l'ajout de picots, de crans, de stries ou rainures sur les surfaces en contact, à titre d'exemples non limitatifs, sans que cela ne modifie l'invention. Enfin, les moyens de rappel élastique (22) seront, dans cet exemple, constitués par de simples ressorts hélicoïdaux venant en appui sur les parois du mécanisme de verrouillage (2) et disposés symétriquement de part et d'autre de l'élément de freinage (21). (Fig. 3) ;
• un élément de blocage (23) (Fig. 3), qui sous l'effet des moyens de rappel élastique (24) décrits ci-après, peut venir en appui dans l'encoche (212) que comprend l'élément de freinage (21), ledit élément de blocage (23) étant lui-même monté mobile sur le mécanisme de verrouillage (2), suivant une direction globalement perpendiculaire au bras de liaison (1), de sorte que ledit élément de blocage (23) peut être écarté de ladite encoche (212) que comporte l'élément de freinage (21), afin de libérer ce dernier (Fig. 4). Dans l'exemple présent d'un mode de réalisation de l'invention, l'élément de blocage (23) sera muni d'une extrémité (231) de section triangulaire, destinée à épouser la section en V de l'encoche (212) que comprend l'élément de freinage (21) (Fig. 5) ;
• des moyens de rappel élastique (24) qui sont solidaires du mécanisme de verrouillage (2) ou de l'élément de blocage (23), par appui ou ancrage sur une partie fixe du corps du mécanisme de verrouillage (2) ou par appui ou ancrage sur l'élément de blocage (23), tels que sommairement représentés sous forme d'un simple ressort hélicoïdal schématisé en Figure 1, qui pourront facilement être réalisés par l'homme de l'art. L'invention prévoit que lesdits moyens de rappel élastique (24) agissent directement ou indirectement entre ledit mécanisme de verrouillage (2) et ledit élément de blocage (23), suivant une direction globalement perpendiculaire au bras de liaison (1) ;
• un chariot mobile (3) (Fig. 3), pouvant coulisser le long du bras de liaison (1) sur lequel il est monté et avec un débattement limité par rapport au corps du mécanisme de verrouillage (2), le guidage en translation longitudinale dudit chariot mobile (3) pouvant être obtenu au moyen d'au moins une, mais préférentiellement deux nervures (33), adaptée(s) pour coulisser dans au moins une, mais préférentiellement deux rainures (12) appartenant au bras de liaison (1), tout en offrant une certaine résistance au déplacement relatif entre ledit chariot mobile (3) et le bras de liaison (1), permettant ainsi de maintenir l'élément de blocage (23) en dehors de l'encoche (212) que comprend l'élément de freinage (21), par un appui dudit élément de blocage (23) sur des rampes inclinées (32) décrites ci-après, que comporte ledit chariot mobile (3), (Fig. 4), lorsqu'un mouvement relatif apparaît entre le bras de liaison (1) et le mécanisme de verrouillage (2), le dispositif d'arrêt de porte étant alors en mode déverrouillé. La résistance au glissement relatif entre le bras de liaison (1) et le chariot mobile (3) peut être obtenue par simple friction entre deux surfaces en contact appartenant respectivement à chacun de ces deux éléments, mais encore par l'ajout d'un dispositif de freinage non décrit ici, pouvant être constitué par au moins un patin de frein solidaire du chariot mobile (3) et repoussé par des moyens élastiques au contact d'une surface appartenant au bras de liaison (1), que l'homme de l'art pourra réaliser sans difficulté. Encore, la résistance au glissement relatif entre le bras de liaison (1) et le chariot mobile (3) peut être obtenue par déformation d'une partie déformable non décrite ici, située sur l'une des surfaces du bras de liaison (1) venant au contact d'un bossage appartenant au chariot mobile (3), ou encore venant au contact d'un rouleau cylindrique, libre en rotation et positionné dans un logement semi-cylindrique situé sur une partie du chariot mobile (3) se trouvant en regard de ladite partie déformable. Ladite partie déformable pourra, par exemple, être réalisée à base de matériaux élastomères. Les modes d'obtention de la résistance au glissement relatif entre le bras de liaison (1) et le chariot mobile (3) décrits ci-avant ne sont pas limitatifs et l'homme du métier pourra utiliser d'autres solutions disponibles dans l'état de l'art, sans que cela ne modifie l'invention. Aussi, le chariot mobile (3) est muni, selon l'invention, d'au moins une, voire préférentiellement deux encoches (31), dont la forme est en tout ou en partie similaire à l'encoche (212) que comprend l'élément de freinage (21), ainsi que d'au moins deux rampes inclinées (32) situées de part et d'autre de chacune desdites encoches (31). (Fig. 4). L'invention prévoit en outre que lesdites rampes inclinées (32) que comporte le chariot mobile (3) présentent une inclinaison par rapport à l'axe longitudinal du bras de liaison (1), qui sera préférentiellement plus faible que l'inclinaison des parois des encoches (31) dudit chariot mobile (3), afin de limiter l'amplitude de la composante parallèle à l'axe longitudinal du bras de liaison (1), de l'effort transmis par l'élément de blocage (23) sur lesdites rampes inclinées (32). Selon l'invention, les encoches (31) du chariot mobile (3), sont prévues pour accueillir une partie de l'extrémité (231) de l'élément de blocage (23) et lesdites encoches (31) seront à cet effet préférentiellement positionnées latéralement à l'encoche (212) de l'élément de freinage (21), de sorte que lorsque l'élément de blocage (23) se trouve au fond de ladite encoche (212) en position verrouillée, les encoches (31) du chariot mobile (3) seront juxtaposées et alignées par rapport à l'encoche (212), sous l'effet de l'effort exercé par l'élément de blocage (23) simultanément sur l'encoche (212) de l'élément de freinage (21) et sur les encoches (31) du chariot mobile (3).

Said locking mechanism (2) comprises ( Fig. 3 ):

• a braking element (21), which has a face (211) which can bear with good adhesion on a face (11) of the link arm (1), located opposite the face (211) of the braking element (21), while said braking element (21) has a notch (212) ( Fig. 5 ), intended to receive the locking element (23) described below, which exerts pressure on said braking element (21), when the door stop device is in locked mode. Said braking element (21) is furthermore mounted to move relative to the locking mechanism (2) in a direction parallel to the link arm (1) and according to a movement limited by elastic return means (22) which cooperate with the locking mechanism (2) for returning said braking element (21) to a central position, where the notch (212) of said braking element (21) is opposite the locking element (23), as soon as said locking element (23) no longer exerts pressure on the braking element (21), which occurs when the door stop device is in unlocked mode ( Fig. 5 ). The braking element (21) may be constituted by an elastomeric block, for example parallelepipedal in shape, sufficiently rigid to be able to produce there the notch (212) which will be provided with a V-shape in the embodiment presented in this non-limiting example. Furthermore, the elastomeric material of the braking element (21) has good adhesion with respect to the material. constituting the link arm (1) which will be made of metal or plastic in this example. Furthermore, the adhesion between the link arm (1) and the braking element (21) can also be obtained by any arrangements well known to those skilled in the art, such as the addition of pins, notches. , striations or grooves on the surfaces in contact, by way of nonlimiting examples, without this modifying the invention. Finally, the elastic return means (22) will, in this example, consist of simple helical springs bearing on the walls of the locking mechanism (2) and arranged symmetrically on either side of the braking element. (21). ( Fig. 3 );
• a locking element (23) ( Fig. 3 ), which under the effect of the elastic return means (24) described below, can come to bear in the notch (212) that the braking element (21) comprises, said locking element (23) being itself movably mounted on the locking mechanism (2), in a direction generally perpendicular to the link arm (1), so that said locking element (23) can be moved away from said notch (212) that comprises the braking element (21), in order to release the latter ( Fig. 4 ). In the present example of an embodiment of the invention, the locking element (23) will be provided with an end (231) of triangular section, intended to match the V-shaped section of the notch (212 ) included in the braking element (21) ( Fig. 5 );
• elastic return means (24) which are integral with the locking mechanism (2) or the locking element (23), by resting or anchoring on a fixed part of the body of the locking mechanism (2) or by resting or anchoring on the locking element (23), such as summarily represented in the form of a simple helical spring shown diagrammatically in Figure 1 , which can easily be produced by those skilled in the art. The invention provides that said elastic return means (24) act directly or indirectly between said locking mechanism (2) and said locking element (23), in a direction generally perpendicular to the link arm (1);
• a mobile cart (3) ( Fig. 3 ), which can slide along the link arm (1) on which it is mounted and with a limited clearance relative to the body of the locking mechanism (2), the longitudinal translation guiding of said mobile carriage (3) being obtainable at means of at least one, but preferably two ribs (33), adapted to slide in at least one, but preferably two grooves (12) belonging to the link arm (1), while offering a certain resistance to the relative displacement between said movable carriage (3) and the link arm (1), thus making it possible to maintain the locking element ( 23) outside the notch (212) that the braking element (21) comprises, by resting said locking element (23) on inclined ramps (32) described below, which said mobile carriage ( 3), ( Fig. 4 ), when a relative movement occurs between the link arm (1) and the locking mechanism (2), the door stop device then being in unlocked mode. The relative sliding resistance between the link arm (1) and the mobile carriage (3) can be obtained by simple friction between two contacting surfaces belonging respectively to each of these two elements, but also by adding a device brake not described here, which may be constituted by at least one brake pad integral with the movable carriage (3) and pushed back by resilient means in contact with a surface belonging to the link arm (1), which the man of the art will be able to achieve without difficulty. Again, the resistance to relative sliding between the link arm (1) and the movable carriage (3) can be obtained by deformation of a deformable part not described here, located on one of the surfaces of the link arm (1). coming into contact with a boss belonging to the mobile carriage (3), or else coming into contact with a cylindrical roller, free to rotate and positioned in a semi-cylindrical housing located on a part of the mobile carriage (3) located in look at said deformable part. Said deformable part may, for example, be made from elastomeric materials. The methods of obtaining the resistance to relative sliding between the link arm (1) and the movable carriage (3) described above are not limiting and those skilled in the art may use other solutions available in the field. state of the art, without this modifying the invention. Also, the mobile carriage (3) is provided, according to the invention, with at least one, or even preferably two notches (31), the shape of which is wholly or in part similar to the notch (212) that the slot comprises. 'braking element (21), as well as at least two inclined ramps (32) located on either side of each of said notches (31). ( Fig. 4 ). The invention further provides that said inclined ramps (32) that the movable carriage (3) comprises have an inclination relative to the longitudinal axis of the connecting arm (1), which will preferably be less than the inclination of the walls. notches (31) of said movable carriage (3), in order to limit the amplitude of the component parallel to the longitudinal axis of the link arm (1), of the force transmitted by the locking element (23) on said inclined ramps (32). According to the invention, the notches (31) of the mobile carriage (3) are provided to accommodate part of the end (231) of the element locking (23) and said notches (31) will for this purpose preferably be positioned laterally to the notch (212) of the braking element (21), so that when the locking element (23) is at the bottom of said notch (212) in the locked position, the notches (31) of the movable carriage (3) will be juxtaposed and aligned with respect to the notch (212), under the effect of the force exerted by the element of blocking (23) simultaneously on the notch (212) of the braking element (21) and on the notches (31) of the mobile carriage (3).

As soon as in the locked position, a force greater than a predefined threshold appears on the link arm (1), the locking element (23) is pushed outwards from the assembly formed by the notches (212) and (31), up to the point where the locking element (23) is no longer in contact with the notch (212) of the braking element (21), said locking element (23) does not being therefore more maintained than by the parts of the end (231) of said locking element (23), which were located opposite the notches (31) of the mobile carriage (3) and which are now located in support on the inclined ramps (32) of the mobile carriage (3) ( Fig. 4 and 5 ). In this position, the link arm (1) is no longer blocked in translation by the braking element (21) and the door stop device is in unlocked mode. In this phase, the mobile carriage (3) is subjected mainly to two opposing forces located in a direction parallel to the longitudinal axis of the link arm (1) and which balance each other. One of these forces corresponds to the force exerted by the locking element (23) on the inclined ramps (32) of the mobile carriage (3), the force of which the component parallel to the longitudinal axis of the link arm ( 1) opposes a sliding resistance force, which appears between the movable carriage (3) and the link arm (1), said sliding resistance force being due to the frictional forces undergone by the movable carriage (3) ) due to the relative movement thereof with respect to the link arm (1). As soon as the movement of the link arm (1) ceases relative to the locking mechanism (2), when the door is left in any open position, said sliding resistance force disappears, thus breaking the balance of forces , and the locking element (23), under the effect of the elastic return means (24), causes the notches (31) of the movable carriage (3) to be aligned with the notch (212) of the braking element (21), the end (231) of the locking element (23) then being at the bottom of said notch (212). The door stop device is then again in the locked position. It should be noted that the notches (31) of the movable carriage (3) could not be positioned just laterally to the notch (212) of the braking element (21), but in a position slightly offset for reasons of space, for example, without this modifying the invention. In this case it would then be necessary to adapt the locking element (23) accordingly, by providing an element which replaces the end (231) of the locking element (23) and which would cooperate with the notches (31) of the mobile carriage (3). Finally, the invention provides that in a preferred embodiment, the mobile carriage (3) can rest or slide in contact with at least one bearing zone (26), integral with the locking mechanism (2), of preferably flat and rectilinear shape ( Fig. 2 ), in order to take up the forces applied directly or indirectly by the locking element (23), on said movable carriage (3), in the locked or unlocked modes of the locking mechanism (2). Said bearing zone (26) may simply consist of one or more ribs integral with the walls of the locking mechanism (2), which a person skilled in the art will be able to produce without difficulty.

Variant of the braking element (21) and of the mobile carriage (3) ( Fig. 15 ): in a preferred embodiment, the braking element (21) and the movable carriage (3) can be made integral so as to form one and the same part. The notch (212) in the braking element (21) and which is intended to receive the locking element (23) will then be extended on each side by inclined ramps (32), the inclination of which will preferably be less than the inclination of the walls of said notch (212) which the braking element (21) comprises. Said inclined ramps (32) will be supported on a surface (111) belonging to said link arm (1), in order to take up the force exerted by said locking element (23) when the door stop device is in unlocked mode . The assembly thus formed by the braking element (21) and the movable carriage (3) together, will be able to slide along said link arm (1) on which it is mounted and with a limited clearance relative to the body of said mechanism locking element (2), while offering a certain resistance to displacement, thus making it possible to maintain said locking element (23) outside the notch (212) that comprises said assembly constituted by the braking element (21) and the movable carriage (3) united, by resting on the inclined ramps (32) that the said assembly comprising the braking element (21) and the movable carriage (3) united, when a relative movement occurs between the arm link (1) and the locking mechanism (2), the door stop device then being in unlocked mode. The relative sliding resistance between the link arm (1) and said assembly consisting of the braking element (21) and the movable carriage (3) together, can be obtained by simple friction between two contacting surfaces belonging respectively to each of these two elements. In the non-limiting example presented here, the surfaces (2111) belonging to the assembly constituted by the braking element (21) and the movable carriage (3) together, which are advantageously located under the inclined ramps (32), come into contact with the portions of surfaces (111) reserved for this purpose on the link arm (1), thus producing resistance to displacement caused by the frictional forces generated between the surfaces (2111) and (111). The assembly consisting of the braking element (21) and the movable carriage (3) together, may be made of an elastomeric material sufficiently rigid to be able to produce the notch (212) and the inclined ramps (32) therein. Furthermore, the elastomeric material chosen will have good adhesion with respect to the material constituting the link arm (1) which will be provided in metal or plastic, for example.

Variant of elastic return means (24) - ( Fig. 6 and Fig. 7 ): in a preferred embodiment, a variant of the elastic return means (24) can be constituted by the addition of a transmission means (241) provided between the elastic return means (24) on the one hand, and the locking element (23) or the locking mechanism (2) on the other hand, said transmission means (241) being constituted by at least two surface elements (2411) and (2412), one of which at least is of curved shape, said surface elements (2411) and (2412) cooperating with each other in a relative movement in two directions generally perpendicular to each other, one of said elements of surfaces (2411) and (2412) being integral with the locking element (23), the other of said surface elements (2411) or (2412) being integral with the locking mechanism (2) through the return means elastic (24) to which it is subjected. Said surface elements (2411) and (2412) cooperate so as to transmit the force provided by the elastic return means (24) and such that the direction of the support force F (a) illustrated in Figures 6 and 7 , transmitted to the point of contact between said surface elements (2411) and (2412), changes as the elastic return means (24) are compressed. Thus, when the angle defined by the direction of the force F (a) transmitted to the point of contact between said surface elements (2411) and (2412), with respect to the direction of compression of the elastic return means (24 ), is weak, then the perpendicular component F (p) illustrated in Figures 6 and 7 , acting on said locking element (23), is low, which has an advantage in unlocked mode ( Fig. 7 ). Conversely, when the angle defined by the direction of the force F (a) transmitted to the contact point defined above, with respect to the direction of compression of the elastic return means (24) is close to 90 °, the perpendicular component F (p) acting on the locking element (23) is high , which has an advantage in locked mode ( Fig. 6 ). The desired purpose is to reduce the force of bearing said locking element (23) against the inclined ramps (32) of the mobile carriage (3), when the door stop device is in unlocked mode, thus making it possible to reduce the resistance to relative sliding between the link arm (1) and the mobile carriage (3), necessary for the balance of the forces undergone by the mobile carriage (3) in said unlocked mode. Maneuvering the door in unlocked mode then requires less effort. It will be noted that in a preferred embodiment and without this modifying the invention, the surface elements (2411) and (2412) can be integrated respectively into the locking element (23), in the form of a boss for the surface element (2411), and integrated with the elastic return means (24) for the surface element (2412), for example when producing the elastic return means (24) from elastic blades having a curved end, well known in the state of the art.

Another variant of the elastic return means (24) - ( Fig. 8 to Fig. 13 ):
According to the invention, the elastic return means (24) are integral with the locking mechanism (2) or the locking element (23) and act directly or indirectly between said locking mechanism (2) and said locking element. (23), in a direction generally perpendicular to the link arm (1). According to one of the embodiments of the elastic return means (24), the invention proposes to modulate the value of the force supplied by said elastic return means (24), according to the inclination of the locking mechanism (2), this in order to allow modulating the holding force in locked mode, depending on the inclination of said locking mechanism (2). To this end, the invention proposes to replace the elastic return means (24), by a superposition of the effects of at least two separate elastic return means (24) and (29) ( Fig. 8 ), arranged so that the forces they provide can be accumulated in the same direction, when a mechanical connection means (291) described below, comes to interpose under the simple effect of gravity, between said separate elastic return means (24) and (29), or between one of the separate elastic return means (24) or (29) and the locking mechanism (2). In the present example of an embodiment of the invention, we will choose to interpose a mechanical connection means (291) between the elastic return means (29) produced according to first variant described above and the locking mechanism (2). The mechanical connection means (291) acting under the simple effect of gravity can advantageously be formed of a spherical ball (291), housed in a resistant conical surface (292) ( Fig. 8 ), said resistant conical surface (292) being mechanically linked to the elastic return means (29) ( Fig. 8 ), by any means known in the state of the art, or even and without this changing anything in the invention, said resistant conical surface (292) being integral with the locking mechanism (2) ( Fig. 11 ), with in this case mounting the door stop device in the inverted position ("upside down") compared to the illustration shown in Figure 8 . Said resistant conical surface (292) is furthermore centered in relation to a rigid surface (293) which is located on the locking mechanism (2) ( Fig. 8 ), or which is located on a part integral with the elastic return means (29) ( Fig. 11 ), when the resistant conical surface (292) is itself integral with the locking mechanism (2). Said rigid surface (293) comprises at its center a cavity (2931), making it possible to accommodate the spherical ball (291) when the resistant conical surface (292) and the rigid surface (293) approach each other , ( Fig. 9 and Fig. 12 ) due to the movement of the locking element (23), while the spherical ball (291) has remained in the center of the resistant conical surface (292), under the effect of gravity. In this case, the elastic return means (29) are not put into compression during the movement of the locking element (23), and therefore do not participate in the force imposed on the locking element (23). ). Conversely, when the spherical ball (291) leaves the center of the resistant conical surface (292) under the effect of gravity, due to an inclination of the door stop device beyond a threshold predetermined by the angle of the cone formed by the resistant conical surface (292), said spherical ball (291) comes between the resistant conical surface (292) and the rigid surface (293), thus constituting a mechanical link allowing the elastic return means (29) to be put into compression by the movement of the locking element (23), thus causing an accumulation of the forces provided by the separate elastic return means (24) and (29) ( Fig. 10 and Fig. 13 ). Thus, when the inclination of the door stop device remains below a certain predetermined threshold, the elastic return means (29) are not biased by the movement of the locking element (23) and the 'resulting force on said locking element (23) is lower. Conversely, when the inclination of the door stop device exceeds a certain predetermined threshold, the elastic return means (29) are actuated at the same time as the means of elastic return (24) by the movement of the locking element (23) and the resulting force on said locking element (23) is greater.

Variant of link arm (1) ( Fig. 14 ):
The link arm (1), described above, provides the link between the door frame and the locking mechanism (2) when the latter is integral with the leaf. Conversely, if the locking mechanism (2) has been designed to be integral with the door frame, then the link arm (1) provides the link between the leaf and the locking mechanism (2).

In either case, during opening or closing maneuvers of the leaf, the link arm (1) transmits the forces resulting from the relative movement of the leaf, the locking mechanism (2) then being in unlocked mode. Furthermore, the link arm (1) transmits the forces associated with maintaining the leaf in a fixed open position when the locking mechanism (2) is in the locked position. Also, when the opening element arrives in its fully open position, it may be advantageous, as is the case with most of the door stop devices known in the state of the art, to provide a so-called device. "Limit switch", intended to ensure that the link arm (1) will stop the leaf so that the latter cannot go beyond its fully open point, which could damage the leaf or the body of the motor vehicle. Limit-of-travel devices known in the state of the art generally consist of rigid stops, sometimes provided with buffers made of elastic materials in order to limit the impacts during excessively sudden openings of the opening. Also, the invention provides that the link arm (1) may include at its free end, a cylindrical part (15), juxtaposed with said link arm (1), preferably opposite the face (11) intended, it, to cooperate with the braking element (21), the axis of said cylindrical part (15) being preferably parallel to the longitudinal axis of the link arm (1). Said cylindrical part (15) will be designed to penetrate into a cylindrical cavity (27), integral with the locking mechanism (2), said cylindrical cavity (27) itself being provided so that the dimensions of its cross section are barely greater than the dimensions of the cross section of the cylindrical part (15), so that the penetration of this cylindrical part (15) into the cylindrical cavity (27) takes place with a reduced clearance between the walls of these two elements during full door opening. The desired purpose is to trap a volume of compressed air inside the cylindrical cavity (27) under the effect of the penetration of the cylindrical part (15) which then acts like a piston, which will dampen the end of travel of the link arm (1). Also, just after immobilizing the link arm (1) in its end-of-stroke position, any leakage flow between the walls of the cylindrical part (15) and of the cylindrical cavity (27) will quickly drop the pressure of the air trapped in the cylindrical cavity (27). The invention also provides that the cylindrical cavity (27) may be made from an elastomeric material, so that the dimensions of the cross section of said cylindrical cavity (27) are slightly smaller than the dimensions of the cross section of the cylindrical part (15), so that the penetration of said cylindrical part (15) inside said cylindrical cavity (27) takes place with a braking effect, due to the deformation of the elastomer material constituting the cavity cylindrical (27) during the penetration of the cylindrical part (15). Finally, the invention provides that an elastic element (271) can be placed in the cylindrical cavity (27) in order to help dampen the end of travel of the link arm (1), due to the compression of the 'elastic element (271) by the cylindrical part (15), during the penetration of the latter into the cylindrical cavity (27). The elastic element (271) will not be described here, but could be constituted, by way of non-limiting example, by a helical spring, an elastomer block or any other elastically deformable element, known in the state of the art.

Claims (8)

1. Door-stopping device, comprising a linking arm (1) and a locking mechanism (2), one being mechanically connected to the door leaf, the other to the non-moving structure on which the leaf is mounted, the said linking arm (1) comprising at least one face (11) configured to cooperate with the said locking mechanism (2) which for this purpose comprises a braking element (21), which comes to bear against the said face (11) of the linking arm (1), the said braking element (21) being actuated by a blocking element (23) mounted to be movable on the locking mechanism (2), in a direction generally perpendicular to the linking arm (1), the said blocking element (23) coming to bear in a notch (212) provided on the braking element (21), and said blocking element (23) cooperating with elastic return means (24) which act directly or indirectly on the said blocking element (23), to press via said blocking element (23) on the braking element (21), thus allowing the relative holding of the door in a particular open position between the closed position and the fully-open position, characterized by the fact that:

   - said face (11) of the linking arm (1) has a surface state whose characteristics allow adherence by friction between the braking element (21) and the face (11) of the linking arm (1);

   - said braking element (21) has a face (211) able to come to bear with adherence on the said face (11) of the linking arm (1);

   - said braking element (21) is mounted to be movable in relation to the locking mechanism (2), in a direction a parallel to the said linking arm (1) and with a travel limited by elastic return means (22) which cooperate with the locking mechanism (2) in order to bring said braking element (21) back to the position in which the said notch (212) of the braking element (21) is facing the blocking element (23), as soon as said blocking element (23) no longer presses on the said braking element (21), when the door-stopping device is in unlocked mode;

   - said blocking element (23) can be moved clear of the notch (212) which the braking element (21) comprises, in order to release said braking element (21);

   - the elastic return means (24), mechanically connected to the locking mechanism (2) or to the blocking element (23), act directly or indirectly between the said locking mechanism (2) and said blocking element (23), in a direction generally perpendicular to the linking arm (1);

   - a mobile carriage (3), slides along the linking arm (1) on which it is mounted with limited travel in relation to the body of the locking mechanism (2), while providing resistance to the relative movement between said mobile carriage (3) and the linking arm (1);

   - said mobile carriage (3) is provided with at least one notch (31), of which the shape is wholly or partly similar to the notch (212) which the braking element (21) comprises, as well as at least two inclined ramps (32) located on opposite sides of the said notch (31) of the mobile carriage (3) and provided to hold the blocking element (23) when the door-stopping device is in unlocked position, whereas the said notch (31) of the mobile carriage (3) is provided to receive part of the end (231) of the blocking element (23) and the said notch (31) of the mobile carriage (3) is preferentially positioned laterally in relation to the notch (212) of the braking element (21), such that when the blocking element (23) is located at the bottom of the said notch (212) in locked position, the notch (31) of the mobile carriage (3) is juxtaposed and aligned in relation to the notch (212) of the braking element (21), as a result of the load exerted by the blocking element (23);

   - when a load greater than a predefined threshold occurs on the linking arm (1), the blocking element (23) is pushed away towards the outside of the set composed of the notches (212) and (31), up to the point where the blocking element (23) is no longer in contact with the notch (212) of the braking element (21), the said blocking element (23) then being only held by the parts of the end (231) of the said blocking element (23), which were facing the notches (31) of the mobile carriage (3) and which now bear on the inclined ramps (32) of the mobile carriage (3), the linking arm (1) being no longer blocked from translational movement by the braking element (21) and the door-stopping device being then in unlocked mode.
2. Door-stopping device according to claim 1, characterized in that the elastic return means (24) are formed by the addition of a transmission means (241) provided between the elastic return means (24) and either the blocking element (23) or the locking mechanism (2), the said transmission means (241) being formed by at least two surface elements (2411) and (2412), at least one of which having a curved shape, the said surface elements (2411) and (2412) cooperating with each other in a relative movement in two directions that are generally perpendicular to each other, while said surface elements (2411) and (2412) cooperate so as to transfer the load provided by the elastic return means (24), such that the direction of the bearing force which is transmitted at the contact point between the said surface elements (2411) and (2412), changes progressively with compression of the elastic return means (24).
3. Door-stopping device according to claim 1, characterized in that the superimposing of the effects of at least two distinct elastic return means (24) and (29), enables an addition together of the loads they provide in the same direction, when a mechanical connection advantageously made up of a spherical ball (291), becomes interposed merely under the effect of gravity, between the said distinct elastic return means (24) and (29), or between the elastic return means (29) and the locking mechanism (2), while the said spherical ball (291), is housed in a resistant conical surface (292) which is mechanically connected to the elastic return means (29) or to the locking mechanism (2), the said resistant conical surface (292) being also centered facing a rigid surface (293) located on the locking mechanism (2) or mechanically connected to the elastic return means (29), the said rigid surface (293) comprising in its center a cavity (2931), able to receive the spherical ball (291) when the resistant conical surface (292) and the rigid surface (293) move towards each other, as a result of the movement of the blocking element (23), while the spherical ball (291) has remained in the center of the resistant conical surface (292), under the effect of gravity, the elastic return means (29) not then being compressed on movement of the blocking element (23), while conversely, when the spherical ball (291) leaves the center of the resistant conical surface (292) due to an inclination of the door-stopping device, the said spherical ball (291) comes to be interposed between the resistant conical surface (292) and the rigid surface (293), allowing the elastic return means (29) to be compressed by the movement of the blocking element (23), thus causing an addition together of the loads provided by the distinct elastic return means (24) and (29).
4. Door-stopping device according to one of claims 1 to 3, characterized in that the braking element (21) and the mobile carriage (3) are joined in order to form a single part, while the notch (212) which the braking element (21) comprises is extended on each side by inclined ramps (32) which bear on a surface (111) belonging to the said linking arm (1) in order to receive the load exerted by the blocking element (23) when the door-stopping device is in unlocked mode; the set so obtained by combining the braking element (21) and the mobile carriage (3) together, is able to slide along the said linking arm (1) on which it is mounted and with limited travel in relation to the body of the said locking mechanism (2), while providing resistance to movement, thus making it possible to keep the said blocking element (23) outside of the notch (212), by bearing on the said inclined ramps (32) when a relative movement occurs between the linking arm (1) and the locking mechanism (2), the door stopping device being then in unlocked mode, while the resistance to relative sliding between the linking arm (1) and the said set consisting of the braking element (21) and the mobile carriage (3) combined, may be achieved merely by friction between two surfaces in contact belonging to each of these two elements respectively.
5. Door-stopping device according to one of the claims 1 to 4, characterized in that the linking arm (1) comprises at its free end, a cylindrical part (15), juxtaposed against the said linking arm (1), and configured to enter into a cylindrical cavity (27), mechanically connected to the locking mechanism (2), while the dimensions of the cross section of said cylindrical cavity (27) are larger than the dimensions of the cross section of cylindrical part (15), so that the entry of this cylindrical part (15) into the cylindrical cavity (27) takes place with a reduced clearance between the walls of those two parts, on full opening of the door, while an elastic element (271) may be placed inside the cylindrical cavity (27), in order to help dampen the end of travel of the linking arm (1), thanks to the compression of the elastic element (271) by the cylindrical part (15), when this latter enters the cylindrical cavity (27).
6. Door-stopping device according to claim 5, characterized in that the cylindrical cavity (27) is made from an elastomer material, such that the dimensions of the cross section of said cylindrical cavity (27) are smaller than the dimensions of the cross section of the cylindrical part (15), so that the entry of said cylindrical part (15) inside said cylindrical cavity (27) occurs with a braking effect, due to the deformation of the elastomer material forming the cylindrical cavity (27) during the entry of the cylindrical part (15).
7. Door of a motor vehicle characterized in that it comprises a door-stopping device according to one of the claims 1 to 6.
8. Building door characterized in that it comprises a door-stopping device according to one of the claims 1 to 6.

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