Door-stopping device with infinite holding positions

Door-stopping device, comprising a linking arm (1) and a locking mechanism (2), one being linked to the door leaf, the other to the frame, the said linking arm (1) having at least one face (11) intended to cooperate with the said locking mechanism (2) which has for this purpose a braking element (21), which is pressed against the said face (11) of the linking arm (1), the said braking element (21) being controlled by a blocking element (23) mounted mobile on the locking mechanism (2), following a direction globally perpendicular to the linking arm (1), the said blocking element (23) engaging into a notch (212) provided on the braking element (21), and said blocking element (23) cooperating with resilient return means (24) which act directly or indirectly on the said blocking element (23), to exert pressure via said blocking element (23) on the braking element (21), thus allowing the relative holding of the door in any open position between the closed position and the fully-open position, wherein:

• said face (11) of the linking arm (1) has a surface roughness whose characteristics allow a good friction grip between the braking element (21) and the face (11) of the linking arm (1);
• said braking element (21) has a face (211) which may be pressed with some grip on the said face (11) of the linking arm (1);
• said braking element (21) is mounted mobile in relation to the locking mechanism (2), with a direction a parallel to the linking arm (1) and with a travel limited by elastic recall means (22) which cooperate with the locking mechanism (2) in order to bring said braking element (21) back to the position where the said notch (212) of the braking element (21) is facing the blocking element (23), as soon as said blocking element (23) no longer exerts pressure on the said braking element (21), while the door-stopping device is in unlocked mode;
• said blocking element (23) can be removed from the notch (212) provided on the braking element (21), in order to release said braking element (21);
• the resilient return means (24), linked 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), following a direction globally perpendicular to the linking arm (1);
• a mobile carriage (3), slides along the linking arm (1) on which the mobile carriage is mounted and with limited travel in relation to the body of the locking mechanism (2), while providing some resistance to the relative movement between said mobile carriage (3) and the linking arm (1);
• said mobile carriage (3) comprises at least one notch (31), with a shape which is in all or partly similar to the notch (212) provided on the braking element (21), as well as at least two inclined ramps (32) located on either side of the said notch (31) of the mobile carriage (3) and which are intended to hold the blocking element (23) whenever the door-stopping device is in the unlocked position, while the said notch (31) of the mobile carriage (3) is designed to receive a part of the extremity (231) of the blocking element (23) and the said notch (31) of the mobile carriage (3) is preferentially positioned side by side with the notch (212) of the braking element (21), in such a way that when the blocking element (23) is fully pressed in the notch (212) in the locked position, then the notch (31) of the mobile carriage (3) is juxtaposed and aligned with the notch (212) of the braking element (21), as a result of the load exerted by the blocking element (23);
• whenever a force greater than a predefined threshold appears on the linking arm (1), the blocking element (23) is moved apart from 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) being therefore from this point, only held by the parts of the extremity (231) of the said blocking element (23), which were facing the notches (31) of the mobile carriage (3) and which are from now on, leaning on the inclined ramps (32) of the mobile carriage (3), the linking arm (1) being no longer blocked in translation by the braking element (21) and the door-stopping device being then in unlocked mode.